WO2022236932A1

WO2022236932A1 - Surgical anti-blocking urinary catheter

Info

Publication number: WO2022236932A1
Application number: PCT/CN2021/102128
Authority: WO
Inventors: 严泽军; 程跃; 蒋军辉
Original assignee: 宁波市第一医院
Priority date: 2021-05-08
Filing date: 2021-06-24
Publication date: 2022-11-17

Abstract

A surgical anti-blocking urinary catheter (301), comprising: a drainage section (3011), the drainage section (3011) having at least two drainage grooves (301101), with an opening (301001) of each drainage groove (301101) being in communication with an external space; a balloon section (3012), the balloon section (3012) having an inflation cavity (301202) and a second inner channel (301201); and a delivery section (3013), wherein the drainage section (3011) is provided with a first inner channel (301102); the first inner channel (301102) is in communication with the second inner channel (301201) of the balloon section (3012) and a third inner channel (301301) of the delivery section (3013), so as to form a guide channel (30102) for a guide member to pass therethrough to guide the drainage section (3011) to change from a bent natural state (30100) to a straight guiding state (30200) and then be conveniently delivered into the urethra of a person; and the delivery section (3013) is provided with the third inner channel (301301), and the drainage grooves (301101) are respectively in communication with the second inner channel (301201) and the third inner channel (301301) to form a drainage channel (30101) that comprises at least one closed region (30113), the closed region (30113) being arranged, in a covered manner, at a local opening (301001) of the at least one drainage groove (301101).

Description

Anti-clogging urinary catheter for surgery

technical field

The invention relates to the field of medical equipment and supplies, and further relates to a catheter for surgery.

Background technique

A urinary catheter is a medical device that is inserted through the urethra into the bladder to drain urine. In terms of functional use, there are mainly two types, one is ordinary catheters, and the other is indwelling catheters. Ordinary catheters do not have a balloon, cannot be fixed, and can be used for common catheterization needs. The indwelling catheter mainly has a balloon, which can be fixed.

Referring to Fig. 1A, 1B is an existing indwelling catheter. Fig. 1A is the non-inflated state 30100P of the existing urinary catheter 1P, and Fig. 1B is the inflated state 30200P of the existing urinary catheter. The catheter 1P includes a catheter body 3011P and an inflatable tube 3012P, the catheter body 3011P includes an insertion head 30111P and a balloon 30112P, and the balloon 30112P is integrally arranged on the insertion Head 30111P rear position. The catheter main body 3011P forms a catheterization channel 30101P, and the insertion head 30111P has an inlet hole 3011101P, and the inlet hole 3011101P communicates with the catheterization channel 30101P. The inflation tube 3012P forms an inflating channel 30102P, and the inflating channel 30102P communicates with the air bag 30112P of the catheter body 3011P, so as to inflate the air bag 30112P through the inflating channel 30102P.

The inventor found that there are some aspects to be improved in the existing urinary catheter.

First, regardless of whether it is an indwelling catheter or an ordinary catheter, the shape of the end and the delivery method of the liquid are all the same, that is, the urine is delivered through a small hole at the end into the channel. Therefore, for some operations, such as benign prostatic hyperplasia surgery, ureteroscopy surgery, and bladder cancer surgery, certain blood or blood clots must exist in the urine after these operations, so it is found in practice that both of these are prone to blockage. In other words, none of the existing urinary catheters are suitable for specific postoperative use.

Second, due to postoperative bleeding or small blood clots in the patient's body, these blood or blood clots will be excreted with urine. Based on the structure of the above-mentioned traditional urinary catheter, since urine and blood clots first enter the catheter channel 30101P through the smaller inlet hole 3011101P, when the catheter is used after the operation, urinary catheterization often occurs. In the event of a clogged tube, ie, a blood clot tends to block the access hole.

If the urinary catheter is blocked, because the patient cannot detect this situation in time, if the medical staff does not find out at this time, the patient cannot discharge urine in time, and the catheter cannot be replaced for a long time or other dredging measures will be taken, which will bring serious harm to the patient's body. to very serious adverse effects.

On the other hand, because the end of the existing catheter, that is, the insertion head 30111P is a sharp point, the length of the inserted catheter will affect the user's experience. If it is too long, it will bring the patient such as a sense of urgency. Adverse stimuli. If it is too short or too close to the outside, the airbag will give the patient a greater sense of pressure. That is, such urinary catheters require a high level of operation.

Third, the volume of the bleeding blood clot itself is small, but a large number of blood clots gather at the same position to form a large blood clot that is not easy to disperse, and the existing tip structure and the position of the entry hole 3011101P make the blood clots cannot be shunted, It can only accumulate, which is one of the reasons for blockage.

The statements herein merely provide background information related to the present invention and do not necessarily constitute prior art.

Urinary catheterization is widely used clinically, and a urinary catheter needs to be inserted into the bladder to guide urine to be discharged out of the body through the catheter. As shown in FIG. 17 , a currently common urinary catheter 201P is formed with a balloon 2010P and at least one side drainage opening 2020P near the end. After the catheter 201P is inserted into a proper position, it is inflated towards the air bag 2010P, and the air bag 2010P can act as a compression hemostasis and a certain fixation, so as to reduce bleeding of the patient and reduce the possibility of the catheter 201P slipping out sex. The urinary catheter 201P is a hollow pipe to form an outlet channel 2030P, wherein the side drainage opening 2020P is located on one side of the outlet channel 2030P and communicates with the outlet channel 2030P to drain the urine in the bladder to the export channel 2030P, and then discharged out of the body.

One problem is that there will be congestion in the body of the patient after the operation. Once the congestion blocks the side drainage openings 2020P with the flow of urine, the urinary catheter 201P will lose its function. Designing the diameter of the side drainage opening 2020P to be larger is a possible solution. However, one end of the urinary catheter 201P extends into the bladder, if the length of the end of the urinary catheter 201P is too long, it may irritate the bladder wall, which undoubtedly limits the specification of the end of the urinary catheter 201P , and also limits the size of the side drainage opening 2020P, so that the side drainage opening 2020P cannot be opened larger without increasing the irritation to the bladder.

A urinary catheter is a medical device that is inserted through the urethra into the bladder to drain urine. In terms of use, there are roughly two types of catheters. One is ordinary catheters, that is, catheterization medical supplies that are temporarily used when users have difficulty urinating. Inserting a common urinary catheter to assist urination; the other is an indwelling urinary catheter, which is mainly used for carrying fixed drainage for a long time, such as within 7 days.

Whether it is an ordinary catheter or an indwelling catheter, it is inevitable that a small amount of bleeding will occur in the patient's body during or after the operation, and the internal circulation function of the human body will be weakened to a certain extent. Therefore, the various needs are different from the normal situation, but these two types are more suitable for general situations, that is to say, the various requirements for post-operative urinary catheters are higher, but these two types are more suitable for urinary catheterization. What is normal urine situation.

In this case, the inventors found that there are some aspects to be improved in the existing surgical catheters.

As mentioned above, due to postoperative bleeding or coagulation of small blood clots in the patient's body, the urinary catheter often becomes blocked during use. If the urinary catheter is blocked, because the patient cannot detect this situation in time, if the medical staff does not find out at this time, the patient cannot discharge urine in time, and the catheter cannot be replaced for a long time or other dredging measures will be taken, which will bring serious harm to the patient's body. Very serious adverse effects, even life-threatening. Therefore, the blocking problem of the existing urinary catheter is a problem urgently needed to be solved.

Contents of the invention

One advantage of the present invention is to provide an anti-blocking urinary catheter for surgery, wherein the anti-blocking urinary catheter for surgery uses an external open bend drainage to guide the liquid into the main channel, preventing the mixed particles in the liquid from gathering together and blocking catheter.

An advantage of the present invention is to provide an anti-blocking urinary catheter for surgery, wherein the anti-blocking urinary catheter for surgery is suitable for specific post-operative use, and has specific usage requirements.

An advantage of the present invention is to provide an anti-blocking urinary catheter for surgery, wherein the anti-blocking urinary catheter for surgery is provided with a plurality of drainage grooves, and a plurality of the drainage grooves are arranged at intervals, so as to discharge Reduce the occurrence of clogging.

An advantage of the present invention is to provide an anti-blocking urinary catheter for surgery, wherein the anti-blocking urinary catheter for surgery disperses the accumulated liquid and particles through multi-leaf drainage, reducing the accumulation of liquid mixed with particles in one the probability of the location.

An advantage of the present invention is to provide an anti-blocking urinary catheter for surgery, which includes a drainage section, the end of the built-in section is bent when placed in the body, and there is no sharp point or protruding part, thereby reducing adverse effects on internal organs of the human body stimulating effect.

An advantage of the present invention is to provide an anti-blocking urinary catheter for surgery, which coordinates the functional requirements of bending and drainage by designing the opening position of the drainage groove and matching with the bending direction of the built-in section.

One advantage of the present invention is to provide an anti-blocking urinary catheter for surgery, which includes a protective leaf, the protective leaf is arranged on the outer end of the guide vane, to prevent the outer end of the guide vane from directly contacting the inner membrane of the human body, This enables the built-in section to smoothly pass through the passage in the human body.

An advantage of the present invention is to provide an anti-blocking urinary catheter for surgery, wherein the protective leaves cover the outside of the guide vanes in an arc shape, and gaps are formed between adjacent protective leaves, so that when the liquid can pass through, a Protective guide wall towards the circumference.

An object of the present invention is to provide a steerable catheter for surgery, wherein the catheter can drain urine in the bladder while minimizing the occurrence of blockage caused by impurities such as congestion.

Another object of the present invention is to provide a steerable urinary catheter for surgery, wherein the part of the catheter protruding into the bladder can be designed to be as long as possible, so as to provide more flexibility while not irritating the bladder. Position for urine inflow.

Another object of the present invention is to provide a guideable catheter for surgery, wherein the catheter can provide more places for urine to flow in, so that when some places are blocked, other places can also play a role. The role of catheterization, thereby reducing the overall chance of being blocked.

Another object of the present invention is to provide a steerable catheter for surgery, wherein the catheter can reduce the probability of congestion at the entrance of the catheter by dividing the congestion.

Another object of the present invention is to provide a steerable urinary catheter for surgery, wherein the catheter can miniaturize the massive congestion and at the same time transmit the miniaturized congestion to the outside of the body to reduce the catheter blockage probability.

An object of the present invention is to provide an external drainage catheter for surgery, which can improve the problem of small hole blockage of traditional catheters by means of external drainage at the end.

Another object of the present invention is to provide an external drainage catheter for surgery, which can reduce the blockage of block debris such as blood clots by forming a surface drainage and an open drainage groove at the drainage end of the catheter.

Another object of the present invention is to provide an external drainage catheter for surgery, wherein the catheter for surgery forms a plurality of drainage grooves, and the end surface forms a radial split structure, so as to better divert the flow and treat some viscous or Blocky objects form a splitting effect.

Another object of the present invention is to provide an external drainage catheter for surgery, wherein the drainage groove of the external drainage catheter for surgery extends linearly from the outer end to the rear, and communicates with the catheter through a communication hole after extending a predetermined length. The catheter body, and thus the extended delivery surface for access to said catheter body, has a primary filtering effect.

Another object of the present invention is to provide an external drainage catheter for surgery, wherein the external drainage catheter for surgery includes a plurality of drainage surfaces connected radially so that liquid can enter the catheter from different heights and directions. The above-mentioned drainage groove, and then enter the main body of the catheter to be transported.

Another object of the present invention is to provide an external drainage catheter for surgery, wherein in one embodiment, the external drainage catheter for surgery forms a channel that can pass through the guide wire, so as to be guided by the guide wire Insert the urinary catheter into the human bladder.

In order to achieve at least one of the above advantages, one aspect of the present invention provides an anti-blocking urinary catheter for surgery, which includes:

A drainage section, the drainage section has at least two drainage grooves, the drainage groove has an opening, the opening communicates with the external space, the drainage section has a natural state and a guiding state, in the natural state the drainage the segment is curved, and in the guiding state, the drainage segment is substantially straight;

an airbag segment having an inflatable cavity and a second inner channel, the inflatable cavity surrounding the outside of the second inner channel;

a delivery section, the drainage section, the balloon section and the drainage section are integrally connected; and

An inflatable pipeline; the drainage section has a first inner passage, and the first inner passage communicates with the second inner passage of the airbag section and the third inner passage of the delivery section to form a guide passage , so as to pass through a guiding element to guide the drainage section from the natural state to the guiding state and be conveniently sent into the urethra of the human body, the inflation pipeline is arranged on the delivery section and communicates with the inflation cavity, In order to make the airbag section form an inflated state and an uninflated state, the conveying section has a third inner passage, and each of the drainage grooves communicates with the second inner passage and the third inner passage respectively to form a drainage The channel, the anti-blocking urinary catheter for surgery includes at least one closed area, and the closed area is covered and arranged on a partial opening of at least one of the drainage grooves.

According to one embodiment of the anti-blocking urinary catheter for surgery, the opening of at least one of the drainage grooves extends a predetermined distance from the outer end of the drainage section toward the direction of the balloon section.

According to an embodiment of the anti-blocking urinary catheter for surgery, one of the sealing areas extends upwards from the balloon segment for a predetermined length.

According to an embodiment of the anti-blocking urinary catheter for surgery, wherein the drainage section includes a first tube body and at least two guide vanes, the first tube body forms the first inner channel, and the guide vanes Extending radially outward from the first tube body for a predetermined height, and extending a predetermined length along the longitudinal direction of the first tube body, thereby forming the drainage groove.

According to one embodiment of the anti-blocking urinary catheter for surgery, one of the drainage grooves is located at the inner bend of the drainage section, the other drainage groove is located at the outer bend of the drainage section, and the other drainage groove is located at the inner bend of the drainage section. The opening length of the drainage groove of the road is smaller than the opening length of the drainage groove located in the outer bend.

According to an embodiment of the anti-blocking urinary catheter for surgery, the drainage end has a plurality of drainage grooves, and the plurality of drainage grooves are evenly distributed around the first inner channel.

The anti-blocking urinary catheter for surgery according to one embodiment, wherein the anti-blocking urinary catheter for surgery includes a film layer, and the film layer is covered and arranged on the outer port of the guiding channel.

The anti-blocking catheter for surgery according to one embodiment, wherein the anti-blocking catheter for surgery includes a flushing interface, the flushing interface is arranged on the delivery section, and the flushing interface communicates with The third inner passage forms a flushing water passage.

According to an embodiment of the anti-blocking urinary catheter for surgery, the drainage section includes at least one protective leaf, and the protective leaf is arranged at the outer end of the guide leaf.

According to an embodiment of the anti-blocking urinary catheter for surgery, wherein the protective leaf is arranged on the outer end of the guide leaf in an arc shape, and a gap is formed between two adjacent protective leaves, so The gap communicates with the drainage groove and the outside, the drainage section, the airbag section and the delivery end are flexibly connected in one piece, the length of the closed area is set to match the position of the drainage groove where the closed area is set , the opening length of the drainage groove matches the setting position of the drainage groove.

Description of drawings

Fig. 1A is a perspective view of a prior art urinary catheter in an uninflated state.

Fig. 1B is a perspective view of a prior art urinary catheter in an inflated state.

Fig. 2A is a perspective view of the natural state of the anti-blocking catheter for surgery according to the first embodiment of the present invention.

Fig. 2B is a schematic cross-sectional view along line B-B in Fig. 2A.

FIG. 3 is a schematic cross-sectional view of FIG. 2A .

Fig. 4 is a schematic diagram of a straightened state when a guide member is inserted into the anti-blocking urinary catheter for surgery according to the first embodiment of the present invention.

Fig. 5 is a schematic diagram of the inflated state of the anti-blocking urinary catheter for surgery according to the first embodiment of the present invention.

Fig. 6A is a schematic front view of an anti-blocking urinary catheter for surgery according to the first embodiment of the present invention.

FIG. 6B is a schematic cross-sectional view along the line A-A in FIG. 6A for illustrating the drainage section.

Fig. 6C is a schematic inside view of the anti-blocking urinary catheter for surgery according to the first embodiment of the present invention.

Fig. 6D is a schematic diagram of the outside view of the anti-blocking urinary catheter for surgery according to the first embodiment of the present invention.

Fig. 7 is a schematic diagram showing the development of the drainage section of the anti-blocking urinary catheter for surgery according to the first embodiment of the present invention.

8A-8C are schematic diagrams of the use process of the anti-blocking urinary catheter for surgery according to the first embodiment of the present invention.

Fig. 9 is a schematic perspective view of an anti-blocking urinary catheter for surgery according to a second embodiment of the present invention.

FIG. 10 is a schematic cross-sectional view of FIG. 9 .

11A-11B are schematic diagrams of the use process of the anti-blocking urinary catheter for surgery according to the second embodiment of the present invention.

12A-12C are schematic cross-sectional views of different deformation modes of the drainage section according to the first embodiment of the present invention, which are used to illustrate changes in the layout of the drainage grooves.

13A-13C are schematic diagrams of the development of multiple different deformation modes of the drainage section according to the first embodiment of the present invention, for illustrating the layout change of the closed area.

Fig. 14 is a deformation implementation of the protective blade of the drainage section according to the first embodiment of the present invention.

Figures 15 and 16 are schematic diagrams of a test comparison between the anti-blocking urinary catheter for surgery according to the above-mentioned embodiment of the present invention and the existing urinary catheter.

Fig. 17 is a schematic diagram of the application of a current urinary catheter.

Fig. 18A is a schematic diagram of a surgical steerable urinary catheter according to a preferred embodiment of the present invention.

Fig. 18B is a schematic diagram of another state of the surgical steerable catheter according to the above-mentioned preferred embodiment of the present invention.

19A to 19E are schematic diagrams showing the application of a urinary catheterization kit including the surgical steerable catheter according to a preferred embodiment of the present invention.

Fig. 20A is a schematic diagram of the surgical steerable catheter according to another preferred embodiment of the present invention.

Fig. 20B is a schematic diagram of another state of the surgical steerable catheter according to the above-mentioned preferred embodiment of the present invention.

Fig. 21 is a schematic diagram of the surgical steerable catheter according to another preferred embodiment of the present invention.

Fig. 22A is a schematic diagram of the surgical steerable catheter according to another preferred embodiment of the present invention.

22B to 22C are schematic diagrams of the surgical steerable catheter according to the above-mentioned preferred embodiment of the present invention.

Fig. 23 is a schematic diagram of the surgical steerable catheter according to another preferred embodiment of the present invention.

Fig. 24 is a schematic diagram of the surgical steerable catheter according to another preferred embodiment of the present invention.

Fig. 25 is a schematic diagram of the surgical steerable catheter according to another preferred embodiment of the present invention.

Fig. 26 is a schematic diagram of the surgical steerable catheter according to another preferred embodiment of the present invention.

Fig. 27 is a schematic diagram of the surgical steerable catheter according to another preferred embodiment of the present invention.

28 and 29 are experimental schematic diagrams of the surgical steerable catheter and a traditional catheter according to a preferred embodiment of the present invention.

Fig. 30 is a perspective view of the non-inflated state of the urinary catheter for surgery according to the first embodiment of the present invention.

Fig. 31 is the draining end of the surgical catheter according to the first embodiment of the present invention.

Fig. 32 is a schematic diagram of the fixed balloon of the surgical catheter according to the first embodiment of the present invention.

Fig. 33 is a schematic cross-sectional view of the surgical catheter according to the first embodiment of the present invention.

Fig. 34 is a schematic perspective view of the inflation state of the catheter for surgery according to the first embodiment of the present invention.

Fig. 35 is a schematic top view of the outer end surface of the catheter for surgery according to the first embodiment of the present invention.

Fig. 36A is a schematic view of a standing user of the urinary catheter for surgery according to the first embodiment of the present invention.

Fig. 36B is a partially enlarged schematic view of position A in Fig. 36A.

Fig. 37A is a schematic view of the use of the urinary catheter for surgery according to the first embodiment of the present invention in the lying state of the user.

FIG. 37B is a partially enlarged schematic view of position B in FIG. 37A .

Fig. 38 is a schematic perspective view of a surgical catheter according to a second embodiment of the present invention.

Fig. 39 is a schematic sectional view of a surgical catheter according to a third embodiment of the present invention.

Fig. 40 is a schematic perspective view of a surgical catheter according to a fourth embodiment of the present invention.

41A and 41B are schematic perspective views of a surgical catheter according to a fifth embodiment of the present invention

42A and 42B are schematic perspective views of a surgical catheter according to a sixth embodiment of the present invention.

43A and 43B are schematic diagrams of an external drainage catheter for surgery according to a seventh embodiment of the present invention.

44A and 44B are modified implementations of the outer arc according to the second embodiment of the present invention.

Fig. 44C is a modified embodiment of the urinary catheter for surgery according to the second embodiment of the present invention.

Fig. 45 is an anti-blocking urinary catheter for surgery according to the eighth embodiment of the present invention.

Detailed ways

The following description serves to disclose the present invention to enable those skilled in the art to carry out the present invention. The preferred embodiments described below are only examples, and those skilled in the art can devise other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents and other technical solutions without departing from the spirit and scope of the present invention.

Those skilled in the art should understand that in the disclosure of the present invention, the terms "vertical", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientation or positional relationship indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present invention and simplified description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, so the above terms should not be construed as limiting the present invention.

It can be understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element The quantity may be multiple, and the term "a" cannot be understood as a limitation on the quantity.

References to "one embodiment," "an embodiment," "example embodiments," "various embodiments," "some embodiments," etc. indicate that such embodiments describing the invention may include a particular feature, structure, or characteristic , but not every embodiment must include this feature, structure or characteristic. Furthermore, some embodiments may have some, all, or none of the features described for other embodiments.

Fig. 2A is a perspective view of the natural state of the anti-blocking catheter for surgery according to the first embodiment of the present invention. Fig. 2B is a schematic cross-sectional view along line B-B in Fig. 2A. FIG. 3 is a schematic cross-sectional view of FIG. 2A . Fig. 4 is a schematic diagram of a straightened state when a guide member is inserted into the anti-blocking urinary catheter for surgery according to the first embodiment of the present invention. Fig. 5 is a schematic diagram of the inflated state of the anti-blocking urinary catheter for surgery according to the first embodiment of the present invention. Fig. 6A is a schematic front view of an anti-blocking urinary catheter for surgery according to the first embodiment of the present invention. FIG. 6B is a schematic cross-sectional view along the line A-A in FIG. 6A for illustrating the drainage section. Fig. 6C is a schematic inside view of the anti-blocking urinary catheter for surgery according to the first embodiment of the present invention. Fig. 6D is a schematic diagram of the outside view of the anti-blocking urinary catheter for surgery according to the first embodiment of the present invention. Fig. 7 is a schematic diagram showing the development of the drainage section of the anti-blocking urinary catheter for surgery according to the first embodiment of the present invention. 8A-8C are schematic diagrams of the use process of the anti-blocking urinary catheter for surgery according to the first embodiment of the present invention.

Referring to FIG. 2A to FIG. 8C , the present invention provides an anti-blocking urinary catheter 301 for surgery, which is used to insert the bladder through the natural passage of the human body, such as the urethra of the human body, to drain urine. The operations for which the surgical anti-blocking catheter 301 is applicable are exemplified but not limited to benign prostatic hyperplasia surgery, ureteroscopic surgery, and bladder cancer surgery. Due to the formation of wounds in the bladder in these operations, there must be bleeding to varying degrees after the operation, or there are sundries such as blood or blood clots in the urine.

For ease of description, the direction entering the human body is defined as the front, and the direction outside the human body is defined as the rear.

The surgical anti-blocking catheter 301 has a natural state 30100 and a guiding state 30200. In the natural state 30100, the front end of the surgical anti-blocking catheter 301 is bent, and in the guiding state 30200, the The anti-blocking urinary catheter 301 for surgery is suitable for straightening under the guidance of a guide 302 . That is to say, when in use, when it is necessary to place the surgical anti-blocking catheter 301 via the human urethra into the bladder, the surgical anti-blocking catheter 301 can be straightened under the guidance of the guide 302 Therefore, it cooperates with the linear channel of the human urethra, and after entering the human bladder, the guide 302 is withdrawn, and the end of the surgical anti-blocking urinary catheter 301 returns to the natural state 30100 and becomes curved. In other words, the front end of the anti-blocking urinary catheter 301 for surgery changes in bending elasticity, and the change is related to the shape requirements of human organs during use.

The guide 302 is exemplified but not limited to a guide wire, an inner core, or a predetermined guide 302 made in conjunction with the surgical anti-blocking urinary catheter 301 of the present invention. In other words, during actual manufacture, the shape and size of the guide 302 can be designed according to the size and shape of the surgical anti-blocking urinary catheter 301, if required to be consistent with the existing guide wire or inner core, Then, the existing guide wire or inner core can be used for guidance, if not, the guide 302 that cooperates with the anti-blocking urinary catheter 301 for surgery needs to be manufactured separately.

It is worth mentioning that, as mentioned above, because the traditional urinary catheter is based on its basic structure, the insertion head is generally in a straight line, so the length of the urinary catheter inserted into the bladder will affect the user's experience. Patients bring adverse stimuli such as urinary urgency. If it is too short or too close to the outside, the airbag will give the patient a greater sense of pressure. On the other hand, since one of the functions of the air bag is to fix the urinary catheter and the other is to compress and stop bleeding, the air bag should not be too far away from the bladder outlet. That is, such urinary catheters require a high level of operation. And the anti-blocking urinary catheter 301 for operation based on the present invention is in the natural state 30100, that is, when it is located in the human bladder, the end of the anti-blocking urinary catheter 301 for operation is naturally bent, so the end of the anti-blocking catheter 301 can be reduced. The stimulating effect on the bladder, thereby relatively reducing the requirements for the operation level of the medical staff to place the urinary catheter.

The surgical anti-blocking catheter 301 includes a drainage section 3011, a balloon section 3012 and a delivery section 3013, the drainage section 3011 is located in front of the balloon section 3012, and the delivery section 3013 is located in the balloon section 3012 rear. That is to say, when in use, the drainage section 3011 is the part that first enters the inside of the human body, and the delivery section 3013 is the part that is close to the outside of the human body.

In terms of the relative positional relationship between the surgical anti-blocking catheter 301 and human organs when it is used, the drainage section 3011 is used to be set in the bladder of the human body for drainage, and the balloon section 3012 is used to be set The anti-blocking urinary catheter 301 for surgery is roughly fixed at the bladder outlet of the human body, and the delivery section 3013 is used for setting the ureter outside the human bladder and communicating with an external component. That is to say, when in use, the drainage tube and the balloon section 3012 are located in the bladder, and the delivery section 3013 is located in the ureter and extends outside the human body. The external components are exemplified but not limited to urine bags and drainage tubes.

In terms of the functions of each section of the anti-blocking urinary catheter 301 for surgery, the drainage section 3011 is used to guide liquid into the anti-blocking urinary catheter 301 for surgery, or in other words, the drainage section 3011 is used to drain the human body The fluid in the bladder is directed outward. The airbag section 3012 is used to fix the anti-blocking urinary catheter 301 for surgery, or the airbag section 3012 is used to fix the anti-blocking urinary catheter 301 for surgery at the exit position of the human bladder, and the delivery section 3013 It is used to transport the liquid entering the anti-blocking urinary catheter 301 for surgery to the outside. In other words, the delivery section 3013 extends along the urethra of the human body to the outside of the human body, and transports the liquid to the outside along the urethra of the human body.

In one embodiment of the present invention, the drainage section 3011 , the airbag section 3012 and the delivery section 3013 are integrally connected. By way of example but not limited to, when the anti-blocking urinary catheter 301 for surgery is manufactured, the anti-blocking urinary catheter 301 for surgery is formed one or more times by means of molds or blow molding, injection molding, etc., and thus once Or form the drainage section 3011 , the airbag section 3012 and the delivery section 3013 multiple times. In another embodiment of the present invention, the drainage section 3011 , the air bag section 3012 and the delivery section 3013 are detachably connected.

The drainage section 3011 , the airbag section 3012 and the delivery section 3013 are substantially flexibly connected linearly. The drainage section 3011 , the airbag section 3012 and the delivery end are arranged sequentially from inside to outside, or in other words, from top to bottom.

In the natural state 30100 , the drainage section 3011 is bent, and in the guiding state 30200 , the drainage section 3011 is straightened under the guidance of the guide member 302 . In other words, the straightening or bending of the drainage section 3011 is controlled by the action of the guide 302 . In the natural state 30100, the drainage section 3011 bends inward, and in the guided state 30200, the drainage section 3011 is approximately straight.

The anti-blocking urinary catheter 301 for surgery has a guiding channel 30102, and the guiding channel 30102 is located inside the anti-blocking urinary catheter 301 for surgery, and the guiding channel 30102 comes from the anti-blocking catheter for surgery. The front end of the urinary catheter 301 extends to the rear end so that a guide piece 302 can pass through it.

In one embodiment of the present invention, the anti-blocking urinary catheter 301 for surgery includes a film layer, and the film layer is covered and arranged on the outer port of the guide channel 30102, that is to say, the guide channel 30102 The outer end of the channel 30102 is not connected to the outside. When in use, the user can penetrate the film layer or keep the film layer as required.

The anti-blocking urinary catheter 301 for surgery includes an inflation interface 3014 and an inflation pipeline 3015, the inflation interface 3014 communicates with the inflation pipeline 3015, and the inflation pipeline 3015 extends along the delivery section 3013 and communicates with the air bag Section 3012. The air bag section 3012 has an inflatable chamber 301202, and the inflatable pipe 3015 communicates with the inflatable chamber 301202, so as to inflate the inflatable chamber 301202 through the inflatable interface 3014 and the inflatable pipe 3015, that is, through the inflatable In such a way that the airbag segment 3012 forms an inflated airbag.

In one implementation of the present invention, the inflation conduit 3015 is integrally formed by the inner side of the catheter wall of the surgical anti-blocking catheter 301, that is to say, the tube body forming the inflation conduit 3015 is integrally connected to the Describe the inner wall of anti-blocking urinary catheter 301 for operation. In another implementation of the present invention, the inflation pipe 3015 is formed by an independent pipe, and is pre-buried in the pipe wall of the delivery section 3013 . The inflation interface 3014 is disposed near the outside of the delivery section 3013 .

The drainage section 3011 has at least one drainage groove 301101, and the drainage groove 301101 has an opening 301001, and the drainage groove 301101 communicates with the external space in the lateral direction through the opening 301001, and the drainage groove 301101 extends from the outside of the drainage section 3011 The end extends to a predetermined position toward the rear end, and the drainage groove 301101 communicates with the airbag segment 3012 longitudinally. It is worth mentioning that, since the drainage section 3011 is in a curved area in the natural state 30100, that is to say, the drainage grooves 301101 are curved accordingly, and the drainage grooves 301101 form drainage bends, while Non-linear drainage. This curved drainage method can reduce the probability of direct accumulation of particles such as blood clots to a certain extent because there is no straight plane or bearing surface forming a large area.

The drainage section 3011 has a first inner channel 301102 for the guide member 302 to pass through for guiding. The first inner channel 301102 is located approximately at the center of the drainage section 3011 and extends along the length direction of the drainage section 3011 . The drainage groove 301101 is located outside the first inner channel 301102 . Furthermore, a plurality of drainage grooves 301101 are evenly distributed around the first inner channel 301102 of the drainage section 3011 .

The airbag section 3012 has an inflated state 30400 and an uninflated state 30300. In the inflated state 30400, the airbag section 3012 expands so that the surface of the airbag section 3012 protrudes spherically from the surgical anti-blocking catheter surface of the tube 301. In the non-inflated state 30300, the air bag segment 3012 is deflated, and its surface is consistent with the delivery segment 3013 surface. That is to say, in the inflated state 30400 , the airbag section 3012 forms an airbag protruding from the surface of the delivery section 3013 .

The air bag section 3012 has an inflatable cavity 301202 and a second inner channel 301201 , the inflatable cavity 301202 communicates with the inflatable pipeline 3015 , so as to fill the inflatable cavity 301202 with gas through the inflatable pipeline 3015 . The inflation interface 3014 communicates with the inflation pipeline 3015 . That is to say, the inflation interface 3014 , the inflation pipe 3015 and the inflation chamber 301202 communicate to form an inflation channel 30103 . When the anti-blocking urinary catheter 301 for surgery is used, after the airbag section 3012 enters the predetermined position of the human bladder, an inflator is used to inflate the inflatable chamber 301202 through the inflatable channel so that the airbag section 3012 It is inflated and fixed inside the human body, and the bleeding is stopped by compression of the inflated air bag. The anti-blocking urinary catheter 301 for surgery also includes a one-way valve 3017 , and the one-way valve 3017 is sealingly connected to the inflation interface 3014 . That is to say, the air bag section can be inflated by the inflation device, and when the air bag section 3012 is inflated, the one-way valve 3017 closes the inflation interface 3014 so that the air bag section 3012 is kept at The inflated state 30400 of inflation.

The inflatable cavity 301202 surrounds the second inner channel 301201 to form a roughly spherical air bag, or in other words, forms a ring-shaped support and fixed air bag around the second inner channel 301201 .

The second inner passage 301201 of the airbag section 3012 is longitudinally connected with the drainage section 3011 and the delivery section 3013 . Further, the second inner channel communicates with the first inner channel 301102 of the drainage section 3011 and the drainage groove 301101. In other words, the second inner channel 301201 is used to pass through the guide 302 and transport liquid. The second inner channel 301201 communicates with the first inner channel 301102 of the drainage section 3011 to form part of the guiding channel 30102 . The second inner channel 301201 and the drainage groove 301101 of the drainage section 3011 form part of the drainage channel 30101 .

When using the anti-blocking urinary catheter 301 for surgery, when the balloon section 3012 is in the uninflated state 30300, and the drainage section 3011 is in the guiding state 30200 by the guide member 302, the The guide 302 guides the surgical anti-blocking urinary catheter 301 into the inside of the human body, and when the drainage section 3011 and the airbag section 3012 reach the bladder of the human body, inflate the airbag section 3012 so that the airbag section 3012 3012 remains in the inflated state 30400.

The conveying section 3013 has a third inner passage 301301 , and the third inner passage 301301 communicates with the second inner passage 301201 longitudinally. Overall, the drainage groove 301101 , the second inner channel 301201 and the third inner channel 301301 of the drainage section 3011 communicate with each other to form the integrated drainage channel 30101 . The first inner channel 301102 , the second inner channel 301201 and the third channel of the drainage section 3011 communicate to form the guiding channel 30102 . That is to say, when guiding, the guide member 302 passes through the third inner passage 301301, the second inner passage 301201 and the first inner passage 301102, thereby making the drainage section 3011 in the The guide state 30200, and make the whole anti-blocking urinary catheter 301 for surgery be in the roughly straight guide state 30200, so as to enter the inside of the human body through the natural channel of the human body, such as the urethra. When drainage is used, the internal liquid of the human body can be transported to the outside through the drainage groove 301101 , the second internal channel 301201 and the third internal channel 301301 .

The first inner passage 301102 of the guide section 3011 communicates with the second inner passage 301201 and the third inner passage 301301 to form the guide passage 30102, so as to guide the drainage through the guide element 302 The segment transitions from said natural state 30100 to said guided state 30200 to facilitate delivery into the human urethra.

The conveying section 3013 is provided with a discharge interface 3016, and the discharge interface 3016 is used for connecting external components. For example but not limited to, the drainage interface 3016 is connected with a drainage tube or a urine bag.

The drainage section 3011 has at least two drainage grooves 301101, wherein one of the drainage grooves 301101 extends from the outer end of the drainage section 3011 to the airbag section 3012, and the other drainage groove 301101 extends from the outer end of the drainage section 3011. The outer end of the drainage section 3011 extends to the rear end to a predetermined distance above the inflatable section. In other words, the drainage section 3011 has at least one fully open drainage groove and at least one partially closed drainage groove. The fully open drainage groove is connected to the second inner passage 301201 longitudinally, and is connected to the outside in a transverse direction; the partially closed drainage groove is connected to the second inner passage 301201 longitudinally, and the lateral part is connected to the outside. That is, the fully open drainage groove extends upward from the airbag section 3012 , and the partially closed drainage groove opens upward from a predetermined length above the airbag section 3012 .

According to this embodiment of the present invention, the drainage section 3011 has at least one closed area 30113, and the closed area 30113 closes at least one part of the opening 301001 area of the drainage groove 301101 to form the partially closed drainage groove. In one embodiment of the present invention, the semi-enclosed area extends upwards from the top of the airbag section 3012 for a predetermined distance to cover at least one area of the outer opening 301001 of the drainage groove 301101 . That is to say, at the location of the closed area 30113, the drainage groove 301101 communicates with the airbag segment 3012 in the longitudinal direction or along the extending direction of the drainage segment 3011, and communicates with the outside in the transverse direction or in other words the drainage groove 301101 In the direction of the space, part of the opening 301001 of the drainage groove 301101 is covered and cannot communicate with the outside.

The drainage section 3011 includes a first pipe body 30111 and a guide vane 30112. In the transverse direction, the guide vane 30112 radiates outward from the outer wall of the first pipe body 30111 to a predetermined height to form the drainage groove 301101. In the longitudinal direction , the guide vanes extend longitudinally for a predetermined length along the exterior of the first pipe body 30111 . That is to say, the guide vanes 30112 divide the space outside the first pipe body 30111 to form the drainage groove 301101 . The first tube body 30111 forms the first inner channel 301102 . The outside of the rear end of the guide vane is connected to the air bag segment 3012 .

The drainage section 3011 includes a plurality of guide vanes 30112 symmetrically distributed on the outside of the first pipe body 30111 , thereby separating and forming a plurality of drainage grooves 301101 . The plurality of drainage grooves 301101 are independently connected to the second inner channel 301201 . According to this embodiment of the present invention, the drainage section 3011 includes 6 guide vanes, and 6 drainage grooves 301101 are formed at intervals, and there are respectively a first drainage groove 3011011 and a second drainage groove 3011012 from the inside of the bend to the outside. , a third drainage groove 3011013, a fourth drainage groove 3011014, a fifth drainage groove 3011015, and a sixth drainage groove 3011016. The six drainage grooves 301101 are independently connected to the second inner channel 301201.

It is worth mentioning that, in one embodiment of the present invention, the first tube body 30111 and a plurality of guide vanes 30112 can be integrally molded at one time during manufacturing, that is to say, the first tube The body 30111 and the plurality of guide vanes are integrally connected at one time, and there is no obvious interface or no step-by-step molding is required. In another embodiment, the first tube body 30111 can be formed first, and then A plurality of guide vanes 30112 are formed outside the first pipe body 30111 . It is preferably integrally formed. It should be noted that, in this implementation of the present invention, it is described by taking the formation of 6 guide vanes in the drainage section 3011 and the formation of 6 drainage grooves in isolation, but in other embodiments of the present invention, the drainage The segment 3011 can also form guide vanes in number and arrangement, for example, the number of guide vanes is 2, 3, 4, 5 or more, and the arrangement is an asymmetric arrangement extending longitudinally, and the present invention is not limited in this respect .

According to an embodiment of the present invention, the position of the closed area 30113 of the drainage groove 301101 and the curvature of the drainage section 3011 cooperate with each other. In other words, depending on the bending position of the drainage section 3011 , the opening communication settings of the drainage groove 301101 with the outside are different. The length of the longitudinally extending opening 301001 of the drainage groove 301101 is adjusted by controlling the longitudinally extending length of the closed area 30113 . That is, the partially closed drainage grooves with different opening 301001 lengths are formed at different length positions. On the other hand, the number or position of the drainage grooves 301101 that need to be closed is controlled by designing the area size of the closed area 30113 or the number of the closed areas 30113 . In other words, the size, corresponding position, and quantity of the outer open area of the drainage groove 301101 can be adjusted through the setting of the closed area 30113 and the cooperation of the drainage groove 301101 . For example but not limited to, taking the arc line of the outer bend of the drainage section 3011 as a reference position, the arrangement of the drainage groove 301101 after the drainage end is horizontally expanded is taken as an example. In one embodiment, The length of the closed area 30113 can gradually decrease from the center position to both sides, that is, symmetrically distributed in steps. Correspondingly, the length of the multiple drainage grooves 301101 gradually increases from the center to the outer openings 301001 on both sides. Corresponding to the closed area 30113, it is arranged in a symmetrical inverted step. In another embodiment of the present invention, the length of the closed area 30113 can be gradually reduced from a predetermined position, that is, a unidirectional step change arrangement is formed. Correspondingly, the length of the plurality of drainage grooves 301101 is determined by The predetermined position begins to increase gradually. In another embodiment of the present invention, the intervals of the plurality of drainage grooves 301101 vary, for example, one drainage groove 301101 is partially closed, and the other adjacent drainage groove 301101 is fully open, that is, no closure is provided. District 30113. In other words, the openings 301001 of the plurality of drainage grooves 301101 are provided with the closed areas 30113 at intervals.

According to this embodiment of the present invention, from the inward bend of the drainage section 3011 to the outside, the length of the opening 301001 of the partially closed drainage groove increases gradually. In other words, the longitudinal extension length of the semi-enclosed area located inside the drainage section 3011 is the longest, that is, the length of the opening 301001 of the drainage groove 301101 is the smallest, and the longitudinal extension length of the adjacent semi-enclosed area minus Smaller than the predetermined length, the length of the opening 301001 of the drainage groove 301101 increases by a predetermined length, in turn, until the closed area 30113 is not provided, that is, all the openings 301001 of the drainage groove 301101 are connected to the outside.

For example, in this embodiment of the present invention, referring to Figures 5-7, the drainage section 3011 includes 306 guide vanes and forms 306 guide vanes 301101, which are respectively a first guide vane and a second guide vane , a third guide vane, a fourth guide vane, a fifth guide vane and a sixth guide vane, and the 306 drainage grooves are respectively a first drainage groove 3011011, a second drainage groove 3011012, and a third drainage groove 3011013, a fourth drainage groove 3011014, a fifth drainage groove 3011015, and a sixth drainage groove 3011016, and include 305 closed areas 30113, which are respectively the first closed area 301131, the second closed area 301132, and the first closed area 301132. Three closed areas 301133, a fourth closed area 301134, and a fifth closed area 301135, the first closed area 301131 is set in the first drainage groove 3011011, and the second closed area 301132 is set in the second closed area Two drainage grooves 3011012, the third closed area 301133 is set in the third drainage groove 3011013, the fourth closed area 301134 is set in the fifth drainage groove 3011015, and the fifth closed area 301135 is set In the sixth drainage groove 3011016, the first drainage groove 3011011 is located at the inner curve of the drainage section, and the fourth drainage groove 3011014 is located at the outer curve of the drainage section 3011. Taking the center plane of the curved spiral of the drainage section as the reference plane 303, the first drainage groove 3011011 is symmetrical to the center of the reference plane 303, the fourth drainage groove 3011014 is symmetrically distributed to the center of the reference plane 303, and the second The drainage groove 3011012 and the sixth drainage groove 3011016 are symmetrically distributed about the reference plane 303, the third drainage groove 3011013 and the fifth drainage groove 3011015 are symmetrically distributed about the reference plane 303, and correspondingly, the first closed The zone 301131 is symmetrical to the center of the reference plane 303 , the second closed zone 301132 is symmetrical to the center of the reference plane 303 , the third closed zone 301133 and the fifth closed zone 301135 are distributed symmetrically to the reference plane 303 . Further, the length of the first closed area 301131 is greater than the length of the second closed area 301132, the length of the second closed area 301132 is greater than the length of the third closed area 301133, and the length of the second closed area 301132 The length is the same as that of the fifth closed area 301135 , and the length of the third closed area 301133 is the same as that of the fourth closed area 301134 . That is to say, on both sides of the reference plane 303, the first closed area 301131, the second closed area 301132 and the third closed area 301133 form a step change with gradually decreasing length, and the first closed area Zone 301131, said fifth closed zone 301135 and said fourth closed zone 301134 form a step change with gradually decreasing length.

For example, in another embodiment of the present invention, referring to FIG. 13C , taking the central plane of the curved spiral of the drainage end as a reference, the first drainage groove 3011011 , the second drainage groove 3011012 and the third drainage groove The drainage groove 3011013 and the fourth drainage groove 3011014, the fifth drainage groove 3011015 and the sixth drainage groove 3011016 are respectively located on both sides of the spiral reference plane 303, and the first drainage groove 3011011 and the sixth drainage groove The drainage grooves 3011016 are symmetrically located on the inner curve of the drainage section 3011 , and the fifth drainage groove 3011015 and the sixth drainage groove 3011016 are located on the outer curve of the drainage section 3011 . In other words, taking the cut-away state as an example, the first drainage groove 3011011, the second drainage groove 3011012 and the third drainage groove 3011013 are located on one side of the central symmetry line, and the fourth drainage groove 3011014, The fifth drainage groove 3011015 and the sixth drainage groove 3011016 are located on the other side of the center line of symmetry, and the two groups of drainage grooves are symmetrically distributed about the center line of symmetry. In other words, the first drainage groove 3011011 and the fourth drainage groove 3011014 have the same length and are distributed symmetrically about the symmetry line, the second drainage groove 3011012 and the fifth drainage groove 3011015 have the same length and are about The symmetry line is symmetrically distributed, and the third drainage groove 3011013 and the sixth drainage groove 3011016 have the same length and are symmetrically distributed about the symmetry line. Further, the drainage section 3011 is provided with 304 enclosed areas 30113, which are respectively a first enclosed area 301131, a second enclosed area 301132, a third enclosed area 301133 and a fourth enclosed area 301134, the first The sealing area 301131 is set in the first drainage groove 3011011, the second sealing area 301132 is set in the second drainage groove 3011012, the third sealing area 301133 is set in the fifth drainage groove 3011015, The fourth closed area 301134 is set in the sixth drainage groove 3011016 . The first closed area 301131 and the fourth closed area 301134 have the same length, and the second closed area 301132 and the third closed area 301133 have the same length. The length of the first closed area 301131 is greater than the length of the second closed area 301132 , and the length of the fourth closed area 301134 is greater than the length of the third closed area 301133 .

For example, in another embodiment of the present invention, the drainage section 3011 includes 306 guide vanes to form 306 drainage grooves 301101, which are respectively the first drainage groove 3011011, the second drainage groove 3011012, A third drainage groove 3011013, a fourth drainage groove 3011014, a fifth drainage groove 3011015 and a sixth drainage groove 3011016, the first drainage groove 3011011 is located at the inner bend of the drainage end, and the fourth drainage groove 3011014 is located at the outer bend of the drainage section 3011. The drainage section 3011 includes 303 closed areas, which are respectively a first closed area 301131, a second closed area 301132, and a third closed area 301133. The first closed area The zone 301131 is set in the first drainage groove 3011011 , the second closed zone 301132 is set in the third drainage groove 3011013 , and the third closed zone 301133 is set in the fifth drainage groove 3011015 . That is to say, the plurality of closed areas 30113 are alternately arranged in the plurality of drainage grooves.

It is worth mentioning that, in the embodiment of the present invention, at least part of the drainage groove 301101 located in the inner curve is provided with the closed area 30113, that is, the partial closure of the drainage groove 301101 is formed, and the drainage groove 301101 is located in the outer curve. The drainage groove 301101 of the road, the closed area of the closed area 30113 is reduced, that is, the opening 301001 is increased, or the fully open drainage groove is formed, so that the bend of the drainage section 3011 turns and the drainage groove 301101 Based on this choice, the drainage section 3011 can further reduce the risk of clogging, because the curvature of the area inside the drainage section 3011 is greater than the curvature of the outer curvature, or the inner turning is Small bend, the outer turn is a big bend, so the inner part is mainly subjected to extrusion force, and the outer part is mainly tensile force. Based on the elastic plane structure of the guide vane, it is easy to produce extrusion bending deformation inside the bend, and through the closed area 30113 The setting of the guide vane can relatively fix the position of the guide vane, reduce the deformation of the guide vane, thereby reducing the shrinkage of the space caused by the deformation and the resulting blockage of particles or blood clots.

Further, according to an embodiment of the present invention, referring to FIG. 2A-FIG. 6D, the drainage section 3011 includes at least one protective vane 30114, which is arranged on the outer end of the guide vane 30112 to prevent the guide vane 30112 from The end portion directly contacts the outside, for example, to prevent the planar end portion of the guide vane 30112 from directly contacting the human tracheal intima and causing adverse irritation.

Preferably, the protective vane 30114 is arranged on the outer end of the guide vane 30112 in an arc shape. In other embodiments of the present invention, the protective leaves 30114 may also have other shapes.

According to this implementation of the present invention, a plurality of the guard vanes 30114 are respectively provided at the outer ends of the guide vanes, that is to say, the number of the guard vanes 30114 matches the number of the guide vanes. A gap 301140 is formed between two adjacent protective leaves 30114, and the gap 301140 communicates with the drainage groove 301101 and the outside.

The plurality of guard vanes 30114 are arranged at intervals to form a substantially annular outer surface, that is to say, a relatively flat arc-shaped surface is formed as a whole instead of a striped spaced surface directly formed by the end surface of the guide vane. In other words, irritation of the guide vanes is moderated by the guard vanes 30114. The protective leaves 30114 cover the outside of the guide vanes in an arc shape, and gaps 301140 are formed between adjacent protective leaves 30114, so that when the liquid can pass through, a protective guide wall tending to the circumference is formed.

In one embodiment of the present invention, the protective vane 30114 extends on both sides of the guide vane, that is, forms a substantially T-shaped structure.

Referring to Fig. 14, in another embodiment of the present invention, the protective vane 30114 extends unidirectionally on one side of the guide vane, that is, the protective vane 30114 and the guide vane form an L-shaped structure, the present invention There are no limitations in this regard.

Referring to Figures 8A-8C, one of the usage procedures of the surgical anti-blocking urinary catheter 301 of the present invention is as follows: firstly, a guide 302 is passed through the surgical anti-blocking urinary catheter 301, so that the surgical anti-blocking catheter 301 The catheter is in the guiding state 30200, that is, the drainage section 3011 is straightened, and then the surgical anti-blocking catheter 301 is guided through the guide 302 to be inserted through the natural passage of the human body, that is, through the urethra of the human body Bladder, and then pull out the guide 302, so that the anti-blocking urinary catheter 301 for surgery is in the natural state 30100, that is, the drainage section 3011 bends naturally, and then drains urine. After the anti-blocking urinary catheter 301 for surgery is used up, the guide 302 is inserted again, and the anti-blocking urinary catheter 301 for surgery is pulled out from the body through the guide.

9-11B, in this embodiment of the present invention, the surgical anti-blocking catheter 301 also has a flushing channel 30104, specifically, the surgical anti-blocking catheter 301 includes a flushing channel 30104. A water interface 3018 , the flush water interface 3018 is arranged on the delivery section 3013 , and the flush water interface 3018 communicates with the third inner channel 301301 to form the flush water channel 30104 .

When using the anti-blocking urinary catheter 301 for surgery, first, a guide 302 is passed through the anti-blocking urinary catheter 301 for surgery, so that the catheter is in the guiding state 30200, that is, the The drainage section 3011 is straightened, and then the surgical anti-blocking urinary catheter 301 is guided through the guide 302 to pass through the natural passage of the human body, that is, inserted into the bladder through the urethra of the human body, and then the guide 302 is pulled out, so that the The anti-blocking urinary catheter 301 for surgery is in the natural state 30100, that is, the drainage section 3011 bends naturally, and then drains the urine out. An external flushing device is connected to the flushing interface 3018, and then flushes water to the inside through the flushing channel 30104 to flush out a local blockage, or clean the drainage channel 30101, thereby preventing the risk of blockage. After the anti-blocking urinary catheter 301 for surgery is used up, the guide 302 is inserted again, and the anti-blocking urinary catheter 301 for surgery is pulled out from the body by the guide 302 .

In the first embodiment of the present invention, the description will be made by taking the anti-blocking urinary catheter for surgery as an example. In other embodiments of the present invention, the anti-blocking urinary catheter for surgery The tube may also include other numbers of said drainage grooves and other arrangements. For example, as shown in Figure 3012A, the surgical anti-blocking urinary catheter 301 includes two drainage grooves 301101, which are respectively a first drainage groove 110011 and a second drainage groove 3011012, and the first drainage groove 3011011 and the The second drainage grooves 3011012 are arranged symmetrically facing away from each other.

Referring to Fig. 12B, the anti-blocking urinary catheter 301 for surgery includes three drainage grooves 301101, which are respectively a first drainage groove 110011, a second drainage groove 3011012 and a third drainage groove 3011013. The drainage groove 3011011 , the second drainage groove 3011012 and the third drainage groove 3011013 are evenly distributed around the first pipe body 30111 in a triangular distribution.

Referring to Fig. 12B, the anti-blocking urinary catheter 301 for surgery includes four drainage grooves 301101, which are respectively a first drainage groove 110011, a second drainage groove 3011012, a third drainage groove 3011013 and a fourth drainage groove The groove 3011014, the first drainage groove 3011011, the second drainage groove 3011012, the third drainage groove 3011013 and the fourth drainage groove 3011014 are symmetrically arranged around the first pipe body 30111 with respect to neutral.

13A-13C are schematic diagrams illustrating the development of multiple different deformation modes of the drainage section according to the first embodiment of the present invention, for illustrating the layout change of the closed area.

Referring to Figure 13A, the drainage section 3011 of the surgical anti-blocking catheter 301 includes 306 drainage grooves 3011011, which are respectively a first drainage groove 3011011, a second drainage groove 3011012, and a third drainage groove 3011012, a fourth drainage groove 3011012, a fifth drainage groove 3011012 and a sixth drainage groove 3011016. From the upper end to the lower end of the drainage end, the first drainage groove 3011011, the second drainage groove 3011012, the third drainage groove 3011012, the fourth drainage groove 3011012, the fifth drainage groove 3011012 and the The opening length of the sixth drainage groove 3011016 increases gradually. Correspondingly, the first drainage groove 3011011 corresponds to a first closed area 301131, the second drainage groove 3011012 corresponds to a second closed area 301132, the third drainage groove 3011013 corresponds to a third closed area 301133, the The fourth drainage groove 3011014 corresponds to a fourth closed area 301134, the fifth drainage groove 3011015 corresponds to the fifth closed area 301135, the first closed area 301131, the second closed area 301132, the third closed area 301133 , the closed lengths of the fourth closed area 301134 and the fifth closed area 301135 decrease sequentially. Wherein, the sixth drainage groove 3011016 is not provided with the closed area or the closed area is the shortest.

FIG. 13B is arranged in the opposite direction to that of FIG. 13A , that is to say, it is arranged in an inverted direction as in FIG. 13A . The drainage section 3011 of the anti-blocking urinary catheter 301 for the operation includes 306 drainage grooves 3011011, which are respectively a first drainage groove 3011011, a second drainage groove 3011012, a third drainage groove 3011012, a first drainage groove 3011012, and a first drainage groove 3011012. Four drainage grooves 3011012, a fifth drainage groove 3011012 and a sixth drainage groove 3011016. From the lower end to the upper end of the drainage section 3011, the first drainage groove 3011011, the second drainage groove 3011012, the third drainage groove 3011012, the fourth drainage groove 3011012, and the fifth drainage groove 3011012 And the opening length of the sixth drainage groove 3011016 increases gradually. Correspondingly, the first drainage groove 3011011 corresponds to a first closed area 301131, the second drainage groove 3011012 corresponds to a second closed area 301132, the third drainage groove 3011013 corresponds to a third closed area 301133, the The fourth drainage groove 3011014 corresponds to a fourth closed area 301134, the fifth drainage groove 3011015 corresponds to the fifth closed area 301135, the first closed area 301131, the second closed area 301132, the third closed area 301133 , the closed lengths of the fourth closed area 301134 and the fifth closed area 301135 decrease sequentially. Wherein, the sixth drainage groove 3011016 is not provided with the closed area or the closed area is the shortest.

The length setting of the closed area 30113 is matched with the position of the drainage groove 301101 where the closed area 30113 is set, and is not limited to the above list.

Furthermore, in the embodiment shown in FIG. 13B , the outer end of the surgical anti-blocking urinary catheter 301 is a fully closed arc-shaped head end. In FIG. 13A , the outer end of the anti-blocking urinary catheter 301 for surgery has an open arc-shaped head end, that is to say, each drainage groove 301101 directly communicates with the outside at its top end.

Referring to Figures 15 and 16, the common urinary catheter, A on the left side of the figure, and the surgical external drainage catheter of the present invention, B on the right side of the figure, compare the use effect test:

The surgical external drainage catheter B with the size model 18F was manufactured by 3D printing, and it was compared with the ordinary silicone catheter A of the same model 18F for drainage test.

1. Comparison of pure water drainage.

Drain two bottles of 350ml liquid water with an 18F ordinary silicone catheter and an 18F anti-blocking catheter for surgery. The drainage completion time of the 18F ordinary silicone catheter is 36 seconds. The drainage completion time of the surgical external drainage catheter of the present invention is 40 seconds.

2. Comparison of normal saline drainage with blood clots.

Add 50ml of blood to 50ml of normal saline, let it stand for 15 minutes, and start the drainage experiment after the blood clot is formed.

The 18F silicone drainage tube A was blocked by a blood clot within 5 seconds, and almost no fluid was drained out.

18F surgical anti-blocking catheter B drains 50ml of fluid within 35 seconds.

Through comparative tests, it can be found that the anti-blocking urinary catheter for surgery of the present invention has the same drainage effect as the common urinary catheter of the same type when draining liquid, such as pure water. However, for liquids containing coagulation, especially when there is a lot of coagulation, ordinary silicone catheters are easily blocked, while the anti-blocking catheter for surgery of the present invention has a better drainage effect and can prevent blockage to a certain extent. Fluids containing blood clots are better for drainage.

It is worth mentioning that the drainage section 30111 of the surgical anti-blocking catheter of the present invention has a plurality of drainage grooves 301101, and the drainage pieces forming the drainage grooves 301101 extend radially outward That is to say, drainage positions are formed on the entire circumference of the drainage section 30111 and at different bending positions, and the drainage sheet has a certain supporting effect. When the blood clot reaches the drainage section, it is blocked by the guide vanes of the drainage groove, so Even if a blood clot occurs, it will not block all the drainage areas of all the drainage grooves, that is, it will not be completely blocked, and the ordinary urinary catheter, because there are only two small holes that can enter, is easy to be blocked by blood clots Completely blocked.

Referring to Figures 18A to 19E, a surgical steerable catheter 201 and a urinary catheter set 201000 according to a preferred embodiment of the present invention are illustrated. The surgical steerable catheter 201 is suitable for urinary catheterization, and is especially suitable for use in the scene where the patient needs catheterization for bleeding after surgery. For the sake of brevity, "the surgical steerable catheter" is referred to as "The urinary catheter". The urinary catheter 201 can reduce blockage during catheterization and also reduce irritation to the bladder. The catheterization set 201000 includes the catheter 201 and at least one guide 202, wherein the guide 202 can be a guide wire or an inner core, etc., and is suitable for guiding the catheter 201 into the body, of course It can be understood that the urinary catheter 201 may also be inserted directly into the catheter in some application scenarios.

In detail, the urinary catheter 201 includes a catheter front section 2010 and a urinary catheter rear section 2020, wherein the urinary catheter front section 2010 is connected to the urinary catheter rear section 2020, and the urinary catheter The front section 2010 is suitable for being inserted into the bladder, and the rear section 2020 of the urinary catheter is suitable for guiding the urine from the bladder to the outside.

The urinary catheter 201 has at least one drainage groove 20100, a guiding channel 20200 and a guiding channel 20300, wherein the drainage groove 20100 is used to drain the urine in the bladder to the guiding channel of the urinary catheter 201. A flow channel 20300, wherein the guide channel 20200 is used for at least one guide member 202 to pass through.

The drainage groove 20100 is set at the front section 2010 of the urinary catheter, and the drainage channel 20300 is set at the rear section 2020 of the urinary catheter. The urinary catheter 201 has at least one diversion inlet 20110, wherein the diversion inlet 20110 is arranged at the front section of the catheter 2010, and the urine enters the diversion channel 20300 after passing through the diversion inlet 20110 .

The guide channel 20200 is arranged on the catheter front section 2010 and the catheter rear section 2020, and the guide channel 20200 is suitable for accommodating the guide member 202, wherein the guide member 202 can be an inner core or A guide wire is used to send the urinary catheter 201 to a preset position through the guide member 202 . It can be understood that, the guide channel 20200 can be independent from the guide channel 20300, or, at the position of the catheter rear section 2020, the guide channel 20300 forms at least a part of the guide channel 20200 .

Further, when the guide 202 guides the catheter 201 into the body, the guide 202 runs through the catheter 201 . The front section of the urinary catheter 2010 has an end 20101 and a connecting end 20102 , wherein the end 20101 is the end of the urinary catheter 201 , and the connecting end 20102 is suitable for being connected to the rear section 2020 of the urinary catheter. In this embodiment, the guiding channel 20200 is closed at the position of the end 20101 of the front section of the urinary catheter 2010. When in use, the end 20101 of the front section of the urinary catheter 2010 can be cut off to The guide channel 20200 is exposed. It is also possible to puncture the end 20101 of the catheter front section 2010 with a needle-shaped sharp object to expose the guiding channel 20200 . Of course, it can be understood that, in another embodiment of the present invention, the guide channel 20200 can directly pass through the catheter front section 2010 and the catheter rear section 2020 of the catheter 201, that is, That is, the guide channel 20200 can be directly observed at the distal end 20101 of the catheter front section 2010 . In addition, when the guide member 202 is taken out, the guide channel 20200 can also play a certain role in guiding the flow.

Further, the front section of the urinary catheter 2010 has an outer surface 20103, wherein at least part of the outer surface 20103 is recessed inwardly to form the drainage groove 20100, and the drainage groove 20100 extends in the diameter of the urinary catheter 201. direction and extend to the junction of the catheter front section 2010 and the catheter rear section 2020 to communicate with the drainage channel 20300 . In other words, in this embodiment, the drainage groove 20100 of the urinary catheter 201 is arranged as open. The outer surface 20103 of the front section of the urinary catheter 2010 is directly exposed in the bladder and is in contact with the urine in the bladder. The outer surface 20103 is guided by the guide channel 20300 towards the rear section 2020 of the urinary catheter.

Optionally, the drainage groove 20100 is configured to extend from the end 20101 of the catheter front section 2010 to the connecting end 20102 . Of course, it can be understood that the drainage groove 20100 may also extend from the connection end 20102 toward the end 20101 and not extend to the end 20101 .

In other words, the outer surface 20103 of the catheter front section 2010 includes a peripheral wall 201031 and an end surface 201032, wherein the peripheral wall 201031 is connected to the end surface 201032, the peripheral wall 201031 is located at the side, and the end surface 201032 Extending from one end of the peripheral wall 201031, the drainage groove 20100 can be formed on the peripheral wall 201031, or can extend to the end surface 201032, for example, one drainage groove 20100 can be connected to another drainage groove 20100.

In this way, the catheter front section 2010 of the urinary catheter 201 provides as many positions as possible for the drainage of urine on the one hand. If a position is blocked, the drainage groove 20100 It is arranged longer, so other positions of the drainage groove 20100 can also allow urine to pass through.

Further, in this embodiment, the number of the drainage grooves 20100 is multiple and arranged around them. After one of the drainage grooves 20100 is blocked, the other drainage groove 20100 can continue to play the role of drainage.

It is worth noting that the drainage groove 20100 of the urinary catheter 201 not only plays a role of drainage, but also plays a role of miniaturizing large aggregates such as congestion in the bladder.

In detail, for the urinary catheter 201, the position most likely to be blocked is the position of the diversion inlet 20110. After the position of the diversion inlet 20110 corresponding to one of the drainage grooves 20100 is blocked, the other The position of the diversion inlet 20110 corresponding to the drainage groove 20100 can continue diversion, but it will affect the transmission efficiency of the urinary catheter 201 .

In this embodiment, the catheter front section 2010 includes a support column 2011 and at least two extension wings 2012, wherein the extension wings 2012 extend outward from the support column 2011, and the support column 2011 is designed as It is hollow to form the guide channel 20200 , wherein the drainage groove 20100 is formed between two adjacent extension wings 2012 , and the extension wings 2012 are arranged around the support column 2011 at intervals.

When a group of larger bruises are attracted to the front section 2010 of the urinary catheter along with the urine and adhere to the surface of the extension wing 2012, as the bruise continues toward the back section 2020 of the urinary catheter and the urinary catheter The position of the diversion inlet 20110 of the front section 2010 of the tube is moved, and the extension wing 2012 with a certain strength and a thinner shape can divide the congestion into smaller specifications, so that the specification of the divided congestion does not exceed the specified The size of the drainage groove 20100 makes it possible for the congestion to pass through the drainage inlet 20110 to enter the drainage channel 20300 and then be discharged smoothly.

It can be understood that the extension wing 2012 can divide the large blood congestion into small congestion, which does not mean that the edge of the extension wing 2012 needs to be designed very sharp, the edge of the extension wing 2012 is designed It is also possible to divide large pieces of congestion into small congestion in smooth cases. In this embodiment, the edges of the extension wings 2012 are designed to be rounded, so as to prevent the catheter 201 from causing damage to human tissues when it enters the human body.

In addition, it should be noted that, in this embodiment, the drainage groove 20100 directly extends to the end 20101 of the catheter front section 2010, so the extension wing 2012 is directly exposed at the end. During the process of the urinary catheter 201 entering the bladder, the extension wing 2012 at the front end is in direct contact with human tissue and plays the role of stretching the human tissue first, so the end of the urinary catheter 201 20101 needs to be set to be smooth, so as to reduce the possibility that the extension wing 2012 may cause damage to the human mucous membrane. Optionally, the end 20101 of the urinary catheter 201 is configured as a bullet, and is bullet-shaped with spaced grooves.

Further, the urinary catheter can form a curved portion 2030 . In detail, the front section 2010 of the urinary catheter 201 can be bent to form the curved portion 2030 to reduce irritation to the inner wall of the bladder.

During use, the guide wire or other guide 202 is first inserted into the bladder, then inserted into the urinary catheter 201 along the guide wire, and then the guide wire is pulled out . After the guide wire is pulled out, the catheter front section 2010 of the urinary catheter 201 that loses the support of the guide wire automatically bends to form the bending portion 2030 . Taking the end 20101 of the front end 2010 of the catheter 201 as the center, other parts of the front end 2010 of the catheter are bent into a circle around the end 20101 to form the bending portion 2030 .

After forming the curved portion 2030 , the drainage groove 20100 is still kept open, and changed from a straight line to a curved shape, so that congestion and the like can be more easily divided into smaller volumes at the position of the extension wing 2012 .

In this embodiment, at least part of the front section of the urinary catheter 2010 can be completed as a disc, since the drainage grooves 20100 are distributed on the front section of the urinary catheter 2010 in each circle, so the drainage groove 20100 is distributed in each circle. Allows access to drainage and effectively prevents clogging problems. Since the catheter front section 2010 is naturally bent in the bladder, the drainage groove 20100 extends in multiple directions, so as to reduce the possibility of the drainage groove 20100 being blocked.

Further, the urinary catheter 201 also includes an air bag 2040, wherein the air bag 2040 is arranged at the rear section of the urinary catheter 2020, so that after the guide wire is pushed out of the urinary catheter 201, the air bag 2040 can be inflated The balloon 2040 can hold the front section of the urinary catheter 2010 in the bladder, so as to prevent the patient from dislodging the urinary catheter 201 from the body during activities.

In detail, the urinary catheter 201 has a gas channel 20400 , wherein the gas channel 20400 is arranged at the catheter posterior section 2020 of the urinary catheter 201 and communicates with the balloon 2040 . The back section of the urinary catheter 2020 has an extension end 20201 and a starting end 20202, wherein the starting end 20202 of the back section of the urinary catheter 2020 and the end 20101 of the front section of the urinary catheter 2010 are respectively the Both ends of the urinary catheter 201, the extension end 20201 of the posterior section 2020 of the urinary catheter is connected to the connecting end 20102 of the front section 2010 of the urinary catheter, wherein the gas channel 20400 extends to the urinary catheter between the extension end 20201 and the starting end 20202 of the rear section 2020 of the pipe. The gas channel 20400 can be filled with fluid, such as gas or saline, toward the airbag 2040 , and fluid can also be released from the airbag 2040 outward.

The diversion inlet 20110 of the urinary catheter 201 is located above the air bag 2040 , and the urine flows into the diversion channel 20300 above the air bag 2040 .

For the posterior section of the urinary catheter 2020, it is a double-channel design, the guiding channel 20300 can be a middle channel, and the gas channel 20400 can be arranged on one side of the middle channel.

Further, the urinary catheter 201 can also have a fluid interface 20120 and a diversion outlet 20130, wherein the fluid interface 20120 is conductively connected to the gas channel 20400 and is suitable for being connected to a syringe, so as to supply fluid, the other interface is the diversion outlet 20130 and the diversion outlet 20130 is conductively connected to the diversion channel 20300 and is suitable for connecting to a urine collector, the two interfaces are It is arranged at the position of the starting end 20202 of the posterior section of the urinary catheter 2020 for the user to operate outside the body.

It is worth noting that a one-way valve can be arranged on the fluid interface 20120 connected to the gas channel 20400, when the syringe is inserted into the fluid interface 20120, the fluid in the gas channel 20400 can pass through the The one-way valve described above discharges outwards. Otherwise, when the syringe is pulled out from the fluid interface, the one-way valve automatically closes the gas channel 20400 to prevent the fluid in the gas channel 20400 from flowing out through the fluid interface 20120 .

Further, the common 18F silicone urinary catheter A and the 18F silicone urinary catheter B in this embodiment were compared in the experiment.

The experimental steps are:

①The catheters A and B are respectively inserted into a 350ml mineral water bottle, and the relative postures of the mineral water bottle and the catheters A and B are adjusted so that the catheter can be opened after most of the water is filled in the bottle. A and B can conduct flow diversion smoothly respectively. The mineral water bottle is inserted with a syringe needle as an air vent, and the mouth of the mineral water bottle is provided with rubber gloves to keep the sealing after the catheter A or B is inserted.

The results of the experiment showed that it takes 36 seconds for the ordinary 18F silicone catheter A to complete the drainage; the 18F silicone catheter B in this example takes 38 seconds to complete the drainage.

②The difference from the above steps is the fluid in the mineral water bottle. Add 50ml of blood to 50ml of normal saline to obtain a mixed fluid. The mixed fluid is placed in the mineral water bottle and left to stand for 15 minutes. After the blood clot is formed Start the drainage experiment.

Refer to Figures 28 and 29, the experimental results show that: the ordinary 18F silicone catheter A cannot complete the drainage, the blood clot is blocked, and no fluid flows out; the 18F silicone catheter B in this example needs 31 hours to complete the drainage. second.

③The difference from the above steps is the fluid in the mineral water bottle. Add 20ml of blood to 80ml of normal saline to obtain a mixed fluid. The mixed fluid is placed in the mineral water bottle and left to stand for 15 minutes. After the blood clot is formed Start the drainage experiment.

The results of the experiment showed that it takes 5 minutes for the ordinary 18F silicone catheter A to complete the drainage, and there is a period of time in which the flow is very small; the 18F silicone catheter B in this example takes 19 seconds to complete the drainage. It is concluded that, compared with the urinary catheter A, the urinary catheter B provided in this embodiment can reduce the probability of blockage.

Referring to Fig. 20A and Fig. 20B, the urinary catheter 201 according to another preferred embodiment of the present invention is illustrated.

In this embodiment, the urinary catheter 201 has a flushing function. In detail, the urinary catheter 201 has at least one flushing channel 20500 and at least one flushing interface 20501, wherein the flushing interface 20501 communicates with the flushing channel 20500 and is arranged on all the back sections of the urinary catheter 2020. The starting end 20202 is described.

The urinary catheter 201 has at least one flushing outlet 20502, wherein the flushing outlet 20502 is arranged at the junction of the front section of the urinary catheter 2010 and the rear section of the urinary catheter 2020, and may also be arranged at the The front section 2010 of the urinary catheter or the rear section 2020 of the urinary catheter.

The flushing channel 20500 extends from the flushing interface 20501 along the rear section 2020 of the urinary catheter to the position of the flushing outlet 20502, so as to provide fluid inward through the flushing outlet 20502 for flushing.

The position of the flushing outlet 20502 may be arranged close to the position of the diversion inlet 20110 . When the blockage at the diversion inlet 20110 is serious, fluid can be injected through the flushing channel 20500 to flush the diversion inlet 20110 to alleviate the blockage. Fluid flushing inward can enter the flow guide channel 20300 through the flow guide inlet 20110 and be discharged.

In this embodiment, the number of the flushing channel 20500 and the flushing interface 20501 is one. It can be understood that the numbers of the flushing channel 20500, the flushing interface 20501 and the flushing outlet 20502 can be respectively One, two, three or more, and the flushing channel 20500, the flushing interface 20501 and the flushing outlet 20502 do not need to be in one-to-one correspondence. For example, the flushing channel 20500 may be configured with two flushing ports 20501 or two flushing outlets 20502 .

Referring to Fig. 21, the urinary catheter 201 according to another preferred embodiment of the present invention is illustrated. In this embodiment, the end 20101 of the catheter front section 2010 of the urinary catheter 201 is set to be open, so that the guiding channel 20200 is directly exposed. In detail, in this embodiment, the guide channel 20200 extends from both ends of the urinary catheter 201 and is directly visible at both ends of the urinary catheter 201, and the catheter is directly connected to the catheter during use. The end 20101 of the catheter front section 2010 of the tube 201 may be inserted along the guide 202 .

It can be understood that, for the urinary catheter 201, the guiding channel 20200 is not necessary, as shown in Figures 22A to 22C, the urinary catheter 201 may not have the guiding channel 20200, the urinary catheter 201 can be directly inserted into the catheter.

Referring to Fig. 23, the urinary catheter 201 according to another preferred embodiment of the present invention is illustrated. The difference between this embodiment and the above-mentioned embodiments mainly lies in the position of the diversion inlet 20110 . In the above embodiments, the diversion inlet 20110 is arranged at the extension end 20201 of the rear section 2020 of the urinary catheter. In this embodiment, the diversion inlet 20110 is arranged at the front section of the urinary catheter 2010, close to the junction of the front section of the urinary catheter 2010 and the rear section of the urinary catheter 2020 of the catheter 201 .

In detail, in this embodiment, the diversion inlet 20110 is arranged on the support column 2011 of the catheter front section 2010 , and the drainage groove 20100 is located outside the diversion inlet 20110 . When urine or impurities in the urine need to enter the diversion channel 20300 , it needs to pass through the drainage groove 20100 , and then enter the diversion channel 20300 through the diversion inlet 20110 .

The urine drained along the drainage groove 20100 needs to be sucked into the diversion inlet 20110 after turning. making it miniaturized.

In the above-mentioned embodiment, the diversion inlet 20110 is arranged in the direction of the diversion groove 20100, but in this embodiment, the diversion inlet 20110 is arranged on the side of the diversion groove 20100, so that The flow direction of the urine needs to be changed before entering the diversion channel 20300 . It can be understood that the diversion inlet 20110 can be designed larger, so that part of the diversion inlet 20110 is located in the direction of the diversion groove 20100, and part of the diversion inlet 20110 is located at the side of the diversion groove 20100 square. When the urine is drained along the catheter 201, a part of the urine is directly drained from the side to the diversion inlet 20110, and a part of the urine is diverted to the diversion inlet 20110 along the drainage groove 20100 .

Referring to Fig. 24A, the urinary catheter 201 according to another preferred embodiment of the present invention is illustrated.

The main difference between this embodiment and the above embodiments lies in the arrangement of the drainage grooves 20100 .

In detail, the urinary catheter 201 has the diversion inlet 20110, the diversion channel 20300 and the drainage groove 20100, wherein the diversion inlet 20110 is arranged at a predetermined position of the catheter 201. The position is set so that when the urinary catheter 201 is inserted into the bladder, the diversion inlet 20110 is located in the bladder. The diversion inlet 20110 is connected to the diversion channel 20300 and the diversion channel 20300 is formed by extending a predetermined distance from the initial end 20202 of the urinary catheter 201 toward the end 20101 . The diversion channel 20300 is an intermediate channel, and the diversion inlet 20110 is suitable for communicating with the bladder and the diversion channel 20300 .

The drainage groove 20100 is configured to extend from the position of the drainage inlet 20110 toward the end 20101 of the urinary catheter 201 . In the above embodiment, each of the drainage grooves 20100 is arranged to extend from the position of the diversion inlet 20110 to the end 20101 of the urinary catheter 201, and each of the drainage grooves 20100 is parallel to each other, and the ends position on the same plane.

In this embodiment, the drainage groove 20100 is arranged non-planar. Specifically, one of the drainage grooves 20100 extends from the position of the diversion inlet 20110 toward the end 20101 of the catheter 201 with a length of L1, and one of the drainage grooves 20100 extends from the other direction from the The position of the diversion inlet 20110 extends toward the end 20101 of the urinary catheter 201, and its length is L2. The end 20101 extends with a length of L3, wherein L1 is not equal to L2, nor is it equal to L3, for example, L1 is greater than L2, and L2 is greater than L3. In other words, the front section of the urinary catheter 2010 is not fully grooved, and the drainage groove 20100 is long or short.

When the curved portion 2030 of the urinary catheter 201 is formed, since the drainage groove 20100 is arranged to have an uneven length, the risk of the entire drainage groove 20100 being blocked is dispersed.

It can be understood that, in this embodiment, the part of the diversion inlet 20110 corresponding to each of the diversion grooves 20100 is on the same plane. In other embodiments of the present invention, as shown in FIG. The part of the diversion inlet 20110 corresponding to the diversion groove 20100 may be arranged on a non-planar surface. For example, the drainage groove 20100 can be set to extend from the end 20101 of the catheter 201 to the connecting end 20102 of the catheter front section 2010 respectively, and the extended lengths are different. That is to say, each of the drainage grooves 20100 can communicate with the drainage channels 20300 at different positions.

Further, in this embodiment, the drainage groove 20100 is not grooved to the end 20101 of the catheter front section 2010, the surface of the end 20101 is designed as a smooth surface, and the entire The tip 20101 may be in the shape of a bullet.

Furthermore, when the urinary catheter 201 is formed with the curved portion 2030, the drainage groove 20100 with a longer length is located outside the curved portion 2030, and the drainage groove 20100 with a shorter length is located at the curved portion 2030. part 2030 inside. At this time, the drainage groove 20100 located outside the curved portion 2030 will not be affected by the bending of the urinary catheter 201 and continue to maintain normal drainage, and due to the bending of the urinary catheter tube, the drainage groove will The 20100 is in a curved position to better separate clots.

Referring to Fig. 25, the urinary catheter 201 according to another preferred embodiment of the present invention is illustrated. The difference between this embodiment and the embodiment shown in FIG. 26 mainly lies in the front section 2010 of the urinary catheter.

As shown in accompanying drawing 18, in detail, the catheter 201 includes the catheter front section 2010 and the catheter rear section 2020 and has at least one drainage groove 20100, a drainage channel The channel 20300 and at least one diversion inlet 20110 . The front section of the urinary catheter 2010 includes the support column 2011 and a plurality of extension wings 2012. In the above embodiment, the extension wings 2012 are set in a flat shape directly from the side of the support column 2011. extended outwards. The cross-section of the extension wing 2012 in the cross-sectional direction of the urinary catheter 201 may be straight or similar to straight.

In this embodiment, the cross-section of the extension wing 2012 in the cross-sectional direction of the urinary catheter 201 may be T-shaped. In detail, the extension wing 2012 includes an extension side wall 20121 and an extension peripheral wall 20122, wherein the extension side wall 20121 extends outward from the support column 2011, for example, extends along the radial direction , wherein the extended side wall 20121 extends between the support column 2011 and the extended peripheral wall 20122 . The support column 2011 and the extended peripheral wall 20122 are respectively located at two side ends of the extended side wall 20121 . The extended peripheral wall 20122 generally extends in the circumferential direction and both sides of the extended peripheral wall 20122 are configured to extend inward. It can be seen from the sectional view that the section of the extending peripheral wall 20122 is arc-shaped and protrudes outward. Since the peripheral edges on both sides of the extended peripheral wall 20122 are set to face inward, most of the surfaces that come into contact with human tissue in the process of entering or pulling out are smooth surfaces of the extended peripheral wall 20122 rather than narrow ones. The side peripheral edge of the divided blood, thereby reducing the risk of damage to human tissue on the one hand, and on the other hand, the side peripheral edge of the extended peripheral wall 20122 can be designed to be relatively thin or sharp, so that the congestion can be more easily divided.

It should be noted that, the catheter front section 2010 and the catheter rear section 2020 of the catheter 201 may be integrally formed or separately formed. The support column 2011 and the extension wing 2012 of the catheter front section 2010 may be integrally formed or separately formed.

In addition, the manufacturing materials of the support column 2011 and the extension wing 2012 of the urinary catheter 201 may be the same or different. The support column 2011 can be made of a relatively soft material, such as rubber or silicone, and the extension wing 2012 can be made of a relatively hard material, so as to separate large pieces as much as possible without causing damage to human tissue blood clot.

Referring to Fig. 26, the urinary catheter 201 according to another preferred embodiment of the present invention is illustrated. The difference between this embodiment and the embodiment shown in FIG. 18 mainly lies in the front section 2010 of the urinary catheter. In this embodiment, the urinary catheter has a plurality of through holes 20600 , wherein the through holes 20600 are formed in the extension wings 2012 of the front section 2010 of the urinary catheter. Two adjacent drainage grooves 20100 can be connected through the through hole 20600 . When the urinary catheter 201 is inserted into the human body, it is the outer periphery of the extension wing 2012 that is mainly in contact with human tissue, because the through hole 20600 is formed in the extension wing 2012 Therefore, the existence of the through hole 20600 will not cause damage to human tissue. However, during the process of blocking the drainage groove 20100, blood clots may flow to the position of the through hole 20600, forming The extension wing 2012 portion of the through hole 20600 is designed to be sharp, so that the blood clot is divided.

In other words, in this embodiment, not only can the blood clot be divided by the outer peripheral edge of the extension wing 2012, but also the blood clot can be divided by the through hole 20600 formed by the extension wing 2012, and the divided blood clot can be Flow away through the drainage grooves 20100 on both sides of the extension wing 2012 respectively. In addition, the blood clots separated by the through holes 20600 will not affect the surrounding human body when the urinary catheter 201 is inserted or pulled out. organize.

Referring to Fig. 27, the urinary catheter 201 according to another preferred embodiment of the present invention is illustrated. The difference between this embodiment and the embodiment shown in FIG. 28 mainly lies in the arrangement of the drainage groove 20100 .

In detail, the catheter 201 includes the catheter front section 2010 and the catheter rear section 2020 and has at least one drainage groove 20100, a drainage channel 20300 and at least one drainage channel 20300. Inflow port 20110. In the above embodiments, the drainage grooves 20100 are arranged in a straight line. In this embodiment, the drainage groove 20100 is arranged in a spiral shape, which is spirally formed along the support column 2011 . In other words, for the same drainage groove 20100, the opening positions thereof are not in the same direction. In this way, the possibility of blood clots blocking the drainage groove 20100 can be reduced.

In addition, the flushing ports 20502 may be arranged at the front section of the urinary catheter 2010 and arranged spirally and at intervals along the support column 2011 to effectively flush the drainage groove 20100 .

Fig. 30 is a perspective view of the non-inflated state of the urinary catheter for surgery according to the first embodiment of the present invention. Fig. 31 is the draining end of the surgical catheter according to the first embodiment of the present invention. Fig. 32 is a schematic diagram of the fixed balloon of the surgical catheter according to the first embodiment of the present invention. Fig. 33 is a schematic cross-sectional view of the surgical catheter according to the first embodiment of the present invention. Fig. 34 is a schematic perspective view of the inflation state of the catheter for surgery according to the first embodiment of the present invention. Fig. 35 is a schematic top view of the outer end surface of the catheter for surgery according to the first embodiment of the present invention. Fig. 36A is a schematic view of a standing user of the urinary catheter for surgery according to the first embodiment of the present invention. 36B is a partially enlarged schematic diagram of position A in FIG. 36A. Fig. 37A is a schematic view of the use of the urinary catheter for surgery according to the first embodiment of the present invention in the lying state of the user. FIG. 37B is a partially enlarged schematic view of position B in FIG. 37A .

Referring to FIG. 30 to FIG. 37B , the present invention provides an external drainage catheter 101 for surgery. The external drainage catheter 101 for surgery is used to insert urine into the bladder through the urethra of a human body to drain urine. The surgical external drainage catheter 101 is suitable for use during or after surgery, such as but not limited to benign prostatic hyperplasia surgery, ureteroscopic surgery, and bladder cancer surgery.

The surgical external drainage catheter 101 includes a drainage end 1011, a fixed balloon 1012 and a catheter body 1013, the drainage end 1011, the fixed balloon 1012 and the catheter body 1013 are flexible and approximately It is connected in a linear shape to adapt to the natural passage of the human body.

For ease of description, the direction entering the human body is defined as the front, and the direction outside the human body is defined as the rear. The drainage end 1011 is located in front of the fixed air bag 1012 , and the fixed air bag 1012 is located in front of the catheter main body 1013 .

In one embodiment of the present invention, the drainage end 1011 , the fixed balloon 1012 and the catheter main body 1013 are integrally connected. For example but not limited to, the drainage end 1011, the fixed balloon 1012 and the catheter main body 1013 are integrally formed to form the drainage end 1011, the fixed balloon 1012 and the catheter body one or more times. Urinary tube main body 1013 .

The drainage end 1011 has at least two drainage grooves 101101 , each of the drainage grooves 101101 is open and extends backward from the drainage end 1011 for a predetermined distance. The drainage groove 101101 has an opening 101102 through which the drainage groove 101101 communicates with the external space laterally. The drainage groove 101101 communicates with the fixed air bag 1012 so as to transport liquid to the fixed air bag 1012 through the drainage groove 101101 . That is to say, when in use, the urine in the bladder is transported to the end of the fixed airbag 1012 through the drainage groove 101101 , thereby being transported outward.

Referring to FIG. 30 and FIG. 31 , the drainage end 1011 has at least two drainage surfaces 10111 , and at least two drainage surfaces 10111 form the drainage groove 101101 . In one embodiment of the present invention, the two drainage surfaces 10111 are connected laterally at a predetermined angle to form the drainage groove 101101 , such as a groove with a triangular cross section.

Referring to FIG. 31 , in one embodiment of the present invention, the drainage end 1011 also has an inner connection surface 10112 , and the inner connection surface 10112 is connected between the two drainage surfaces 10111 to form the drainage groove 101101 . That is, a trapezoidal cross section with a trapezoidal cross section or a one-sided arc shape is formed.

Further, the drainage end 1011 includes at least two drainage pieces 10113 , and the surfaces of the drainage pieces 10113 form the drainage surface 10111 . In one embodiment of the present invention, the side ends of at least two drainage sheets 10113 are connected to form at least two drainage grooves 101101 . That is to say, at least two of the drainage pieces 10113 divide one column space into at least two interval spaces. In other words, the two side surfaces of the drainage sheet 10113 respectively correspond to one of the drainage grooves 101101 .

In this embodiment of the present invention, the drainage end 1011 includes three drainage pieces 10113 and has three drainage grooves 101101 , and the three drainage grooves 101101 are formed by the three drainage pieces 10113 at intervals.

Further, the three drains 10113 are connected at radial ends, that is, the three drains 10113 are separated from each other to form three drains 101101 with a substantially triangular cross-section.

It is worth mentioning that, in this embodiment of the present invention, it is described that the drainage end 1011 includes three drainage pieces 10113 and forms three drainage grooves 101101 as an example. In other embodiments of the present invention, The drainage end 1011 may also include other numbers of the drainage pieces 10113 and form other numbers of the drainage grooves 101101 . By way of example but not limitation, 2, 4, 5 and above, the invention is not limited in this regard. At least one communication hole 101103 is formed at the tail end of the drainage groove 101101 , and the drainage groove 101101 communicates with the fixed airbag 1012 through the communication hole 101103 .

Referring to Fig. 30 and Fig. 31, since in the embodiment of the present invention, the three drainage pieces 10113 are radially connected to form a plurality of drainage grooves 101101, on the one hand, the open drainage grooves 101101 make the liquid flow from different The direction and height can enter the drainage groove 101101 to be drained, rather than being limited to the traditional small hole; on the other hand, the drainage surface 10111 can drain the liquid, that is, the liquid can flow along the drainage surface 10111, thus for Some sticky particles can stay on the local surface of the drainage surface 10111 instead of being directly transported to the communication hole 101103 at the end of the drainage groove 101101 .

Referring to Figure 30, Figure 32 and Figure 34, the fixed airbag 1012 has an uninflated state 10100 and an inflated state 10200, in the inflated state 10200, the volume of the fixed airbag 1012 increases, in the uninflated state 10100, the fixed air bag 1012 is in a contracted state, or in other words, the surface of the fixed air bag 1012 is roughly consistent with the surface of the urinary catheter main body 1013 .

The fixed balloon 1012 has an inner channel 101201, and two ends of the inner channel 101201 communicate with the drainage end 1011 and the urinary catheter main body 1013 respectively. That is to say, the inner channel 101201 of the fixed balloon 1012 is a communication channel between the drainage end 1011 and the catheter main body 1013 . The drainage groove 101101 communicates with the inner channel 101201 of the fixed airbag 1012 through the communication hole 101103 for transporting liquid.

The fixed airbag 1012 has a cavity 101202, and the cavity 101202 is used for filling gas or liquid so as to form the fixed airbag 1012 inflated, that is, to increase the volume of the fixed airbag 1012.

The fixed airbag 1012 includes an inner wall 10121 and an outer wall 10122 , and the inner wall 10121 forms the inner channel 101201 . Edges of the outer wall 10122 and the inner wall 10121 are connected to form the cavity 101202 . The stretching elasticity of the outer wall 10122 is greater than that of the outer wall 10122 . That is to say, when the cavity 101202 is inflated, the outer wall 10122 expands outward, and the inner wall 10121 basically maintains its original state.

Referring to FIG. 33 , the catheter body 1013 has a gas channel 101302 , and the gas channel 101302 communicates with the cavity 101202 of the fixed air bag 1012 so as to inflate the cavity 101202 through the gas channel 101302 . In other words, the inflation channel 10102 of the fixed balloon 1012 is provided on the catheter main body 1013 . Further, the main channel 101301 and the gas channel 101302 are arranged independently and extend side by side. In other embodiments of the present invention, the gas channel 101302 can be set separately, for example but not limited to, communicate with the cavity 101202 of the fixed airbag 1012 through an independent tube, instead of being integrally set in the Describe the catheter main body 1013.

The catheter main body 1013 has a main channel 101301 , and the main channel 101301 communicates with the inner channel 101201 of the fixed balloon 1012 . Further, the drainage groove 101101 of the drainage end 1011 , the inner channel 101201 of the fixed balloon 1012 and the main channel 101301 of the catheter body 1013 communicate with each other to form an integral drainage channel 10101 . The cavity 101202 of the fixed air bag 1012 and the gas channel 101302 of the catheter body 1013 communicate with each other to form an inflatable channel 10102 .

Further, the surgical external drainage catheter 101 includes an inflatable interface 1014, the inflatable interface 1014 communicates with the gas channel 101302 of the catheter body 1013, and the inflatable interface 1014 is set on the catheter The pipe main body 1013 is positioned near the rear. Further, the inflation interface 1014 communicates with each of the inflation channels 10102 , so as to connect an external inflation component through the inflation interface 1014 and inflate the fixed airbag 1012 through the inflation channel 10102 .

The surgical external drainage catheter 101 also includes a delivery interface 1015, the delivery interface 1015 communicates with the main channel 101301 of the catheter body 1013, so as to connect external receiving parts through the delivery interface 1015, Such as drainage tubes, urine bags, etc. The delivery interface 1015 is arranged at a position close to the rear of the catheter main body 1013 . Further, the delivery interface 1015 communicates with the drainage channel 10101, thereby forming the drainage channel 101101, the inner channel 101201 of the fixed balloon 1012, and the main channel 101301 of the catheter body 1013. The drainage channel 10101 and the delivery interface 1015 gradually deliver the liquid inside to the outside.

The surgical external drainage catheter 101 also includes an air valve 1016 , and the air valve 1016 is used to detachably connect to the inflation interface 1014 in a sealed manner. That is to say, when the fixed airbag 1012 is inflated, the air valve 1016 is sealed to the inflation interface 1014 so that the fixed airbag 1012 remains in the inflated state 10200 . When the surgical external drainage catheter 101 needs to be restored to the uninflated state 10100, the air can be deflated through the air valve 1016, so that the gas in the inner cavity flows out through the inflatable channel 10102, so that the The volume of the fixed airbag 1012 is reduced.

When the surgical external drainage catheter 1011 is used, after the fixed air bag 1012 enters the predetermined position of the human bladder, an inflation device is used to inflate the cavity 101202 of the fixed air bag 1012 through the inflation channel 10102 so that The fixed airbag 1012 is inflated and fixed inside the human body, and the hemorrhage is stopped by compression of the inflated airbag. Further, the air valve 1016 is inserted into the inflation interface 1014, so that the inflation channel 10102 is closed, so that the The fixed airbag 1012 is continuously in the inflated state 10200. When it is necessary to take out the anti-blocking urinary catheter for surgery, first take out the air valve 1016, so that the fixed airbag 1012 returns to the uninflated state 10100, that is, the volume is reduced, and then pulled out along the natural passage of the human body The external drainage catheter 101 is used for the operation.

It is worth mentioning that, through the structural design of the drainage groove 101101 of the surgical external drainage catheter 101 of the present invention, the surgical catheter can be adapted to different postures of the human body, for example, bedridden flat Lying posture, standing posture, etc. In other words, drainage can be performed relatively smoothly in different postures. Referring to Fig. 37A-37B, for example, when the user is lying flat on the bed, the extension direction of the urinary catheter is approximately perpendicular to the gravity, and under the action of gravity, the liquid can reach the The drainage surface 10111 , and then transport the liquid to the communication hole 101103 along the drainage surface 10111 . In other words, the corresponding drainage groove 101101 can be entered from different directions, regardless of lying flat or lying sideways. As for the traditional entry hole, due to the symmetrical distribution of the two entry holes, there are only two directions to enter, but if it is not facing the flow direction of the liquid, it cannot be easily entered, but if it is facing, it is easy to enter from one hole, Another hole out, or essentially able to go in, is a hole. Referring to Figures 36A-36B, when the user is in a standing posture, the extension direction of the surgical external drainage catheter 101 is roughly consistent with the direction of gravity, and at this time, the liquid can enter directly along the outer end of the drainage end 1011. , or enter from the opening 101102 of the drainage groove 101101, and reach the communication hole 101103 through the gradual drainage of the drainage surface 10111, and be transported to the outside through the delivery channel. Therefore, overall, based on the structural design of the drainage groove 101101 of the present invention, the surgical external drainage catheter 101 can adapt to different usage postures and reduce the risk of blockage.

Referring to FIG. 38, according to an embodiment of the present invention, the drainage end 1011 includes at least one outer arc surface 10114, which is arranged on the outer end of the drainage piece 10113, so as to prevent the end of the drainage piece 10113 from directly contacting The outside, for example, prevents the planar end of the drainage sheet 10113 from directly contacting the endotracheal lining of the human body, causing adverse irritation.

Preferably, the outer arc surface 10114 is arranged on the outer end of the drainage sheet 10113 in an arc shape. In other embodiments of the present invention, the outer arc surface 10114 may also have other shapes.

According to this implementation of the present invention, a plurality of the outer arc surfaces 10114 are respectively provided with a plurality of outer ends of the drainage pieces 10113, that is to say, the number of the outer arc surfaces 10114 matches the number of the drainage pieces 10113 . A gap 101140 is formed between two adjacent outer arc surfaces 10114, and the gap 101140 communicates with the drainage groove 101101 and the outside.

A plurality of the outer arc surfaces 10114 are arranged at intervals to form a substantially annular outer surface, that is to say, a relatively flat arc surface is formed as a whole instead of a striped spaced surface directly formed by the end surface of the drain piece 10113 . In other words, the stimulation of the drainage sheet 10113 is alleviated by the outer arc surface 10114 . The outer arc surface 10114 covers the outside of the drainage sheet 10113 in an arc shape, and a gap 101140 is formed between adjacent outer arc surfaces 10114, so that when the liquid can pass through, a protective guide wall tending to the circumference is formed.

In one embodiment of the present invention, the outer arc surface 10114 extends and protrudes from both sides of the drainage piece 10113, that is, forms a substantially T-shaped structure. In another embodiment of the present invention, the The outer arc surface 10114 extends unidirectionally on one side of the drainage sheet 10113, that is, the outer arc surface 10114 and the drainage sheet 10113 form an L-shaped structure, and the present invention is not limited in this respect.

Referring to FIG. 39, in this embodiment of the present invention, the surgical external drainage catheter 101 has a guide channel 10103, and the guide channel 10103 is used to pass through a guide element 102, thereby guiding the surgical external drainage catheter 101. The drainage catheter 101 enters the natural passage of the human body. The guide element 102 is exemplified but not limited to a guide wire and an inner core.

The drainage end 1011 of the surgical external drainage catheter 101 has a central channel 101104 , and the central channel 101104 communicates with the inner channel 101201 of the fixed balloon 1012 . That is to say, the central channel 101104 , the inner channel 101201 and the main channel 101301 communicate to form the guiding channel 10103 .

Referring to FIG. 40 , in this embodiment of the present invention, the drainage end 1011 has at least one covering area 10115 , and the covering area 10115 is disposed in the region of the opening 101102 of at least one drainage groove 101101 . In one embodiment of the present invention, the covering areas 10115 are alternately arranged in the drainage grooves 101101 at intervals. The covering area 10115 extends upward from the airbag to a predetermined height position of the drainage groove 101101 . That is to say, the part of the drainage is directly connected to the outside, and the part is covered.

In one implementation of the present invention, the drainage end 1011 has four drainage grooves 101101, which are respectively a first drainage groove 1011011, a second drainage groove 1011012, a third drainage groove 1011013 and a fourth drainage groove 1011014, The four drainage grooves 101101 are arranged circularly in sequence. The drainage end 1011 includes two covering areas 10115, which are respectively a first covering area 101151 and a second covering area 101152. The first covering area 101151 is set in the first drainage groove 1011011 , and the second covering area 101152 is set in the third drainage groove 1011013 .

The first covering area 101151 and the second covering area 101152 extend upward from the airbag segment at predetermined positions. The height of the first covering area 101151 is consistent with the height of the second covering area 101152 .

In another embodiment of the present invention, at least one of the covering areas 10115 extends from a predetermined position of the drainage groove 101101 to another predetermined position, that is, the middle part of the drainage groove 101101 is covered. That is to say, above the opening 101102 of the drainage groove 101101 , both sides of the covering area 10115 communicate with the outside respectively.

Referring to Figures 41A and 41B, in this embodiment of the present invention, the drainage end 1011 has a plurality of drainage grooves 101101 and a plurality of covering areas 10115, for example but not limited to 106, and a plurality of covering areas 10115 The regions 10115 are respectively covered and arranged on the partial opening regions of the plurality of drainage grooves 101101 . Further, the heights of the plurality of covering regions 10115 increase successively, that is to say, form a step change. In this embodiment of the present invention, a plurality of covering areas 10115 extend upward from the upper end of the fixed airbag 1012 .

Referring to Figures 42A and 42B, in this embodiment of the present invention, the drainage end 1011 has a plurality of drainage grooves 101101 and a plurality of cover areas 10115, and the plurality of cover areas 10115 are misplaced to cover and set on Partial opening areas of the plurality of drainage grooves 101101.

It is worth mentioning that, in this embodiment of the present invention, the drainage pieces 10113 of the two adjacent drainage grooves 101101 are partially connected by the covering area 10115 and arranged in a dislocation, thereby making the drainage The space of the groove 101101 can be partially fixed, and through dislocation, different height positions are combined with each other, so that the drainage groove 101101 has better shape retention, that is, the flexibility of the drainage sheet 10113 is reduced. Blockage caused by deformation.

Referring to Figures 43A and 43B, in another embodiment of the present invention, at least one of the covering areas 10115 is provided with at least one of the drainage grooves 101101, and the covering area 10115 is inward from the outer end of the drainage end 1011 Extending, that is to say, the partial opening 101102 near the outer end of the drainage groove 101101 is closed.

In this embodiment of the present invention, the drainage end 1011 has a plurality of drainage grooves 101101 and a plurality of covering regions 10115, for example but not limited to 106, and the plurality of covering regions 10115 are respectively covered and set In the partial opening area of the plurality of drainage grooves 101101. Further, the heights of the plurality of covering regions 10115 increase successively, that is to say, form a step change. In this embodiment of the present invention, a plurality of covering regions 10115 extend inward from the outer end of the drainage end 1011 .

In another embodiment of the present invention, the drainage end 1011 has three drainage grooves 101101, which are respectively a first drainage groove, a second drainage groove and a third drainage groove, and the three drainage grooves 101101 are arranged circularly in turn. The drainage end 1011 includes three covering areas 10115, which are respectively a covering area, a second covering area and a third covering area, and the first covering area is set in the first drainage groove, the second covering area The area is set in the second drainage groove, and the third covering area is set in the third drainage groove. The first covering area extends backward for a predetermined distance from the outer end of the first drainage groove. The second covering area extends backward for a predetermined distance from the outer end of the second drainage groove. The third covering area extends backward from the third drainage groove for a predetermined distance. The extension lengths of the first covering area, the second covering area and the third covering area are the same.

Referring to Figures 44A and 44B are variant implementations of the outer arc surface 10114 according to the embodiment of the present invention. Referring to FIG. 42A , in this embodiment of the present invention, the outer arc surface 10114 extends from both sides of the drainage sheet 10113 , and the extension length of one side is greater than that of the other side.

Referring to FIG. 44B, in this embodiment of the present invention, the outer arc surface 10114 extends from one side of the drainage sheet 10113, that is, the cross-sections of the drainage sheet 10113 and the outer arc surface 10114 are approximately It has an L-shaped structure.

Referring to FIG. 44C , it is a modified implementation of the drainage groove 101101 according to the second embodiment of the present invention. In this embodiment of the present invention, the drainage end 1011 has 106 drainage grooves 101101, and the 106 drainage grooves 101101 are symmetrically arranged.

Referring to Fig. 45, in this embodiment of the present invention, the surgical external drainage catheter 101 also has a flushing channel, specifically, the surgical external drainage catheter 101 includes a flushing interface 1017, The flushing interface 1017 is arranged on the catheter body 1013, and the flushing interface 1017 communicates with the main channel 101301 to form the flushing channel.

When using the external drainage catheter 101 for surgery, firstly, the external drainage catheter 101 for surgery is sent into the natural channel of the human body, that is, inserted into the bladder through the urethra of the human body, and further, the air bag is injected into the fixed air bag through the inflation device. 1012 is inflated, so that the fixed airbag 1012 is in the inflated state 10200, and the inflation interface 1014 is closed through the air valve 1016, and then the urine is drained out. Or regularly, connect an external flushing device to the flushing interface 1017, and then flush the water through the flushing channel to the inside, flush out the local blockage, or clean the drainage channel 10101, so as to prevent the occurrence of blockage Danger. When the surgical external drainage catheter 101 is used up, the air valve 1016 is pulled out so that the fixed air bag 1012 returns to the uninflated state 10100, and then the surgical external drainage catheter 101 is removed from the Pull out from the body.

Common urinary catheter and the operation effect test contrast of external drainage catheter of the present invention:

A surgical external drainage catheter with a size model of 18F was manufactured by 3D printing, and it was compared with an ordinary silicone catheter of the same model 18F for drainage test.

1. Comparison of pure water drainage. The 18F ordinary silicone catheter and the 18F surgical external drainage catheter drain two bottles of 350ml liquid water respectively. The drainage completion time of the 18F ordinary silicone catheter is 36 seconds. The drainage completion time of the surgical external drainage catheter of the present invention is 38 seconds.

2. Comparison of normal saline drainage with blood clots. Add 50ml of blood to 50ml of normal saline, let it stand for 15 minutes, and start the drainage experiment after the blood clot is formed. The 18F silicone drainage tube was blocked by a blood clot within 5 seconds, and almost no fluid was drained out. The 18F surgical external drainage catheter drains 50ml of fluid within 31 seconds.

Through comparative tests, it can be found that the drainage effect of the surgical external drainage catheter of the present invention is equivalent to that of the common catheter of the same model when draining liquid, such as pure water. However, for liquids containing coagulation, especially when there is a lot of coagulation, ordinary silicone catheters are easily blocked, while the surgical external drainage catheter of the present invention has a better drainage effect and can prevent blockage to a certain extent. It is worth mentioning that the drainage end of the surgical external drainage catheter according to the present invention has a plurality of drainage grooves 101101, and the drainage pieces forming the drainage grooves 101101 are radially outward. Extending, that is to say, a drainage position is formed on the entire circumference of the drainage end and at different heights, and the drainage sheet has a certain supporting effect. When the blood clot reaches the end surface of the drainage sheet, it is blocked by the drainage surface. Therefore, even if a blood clot occurs, It will not block all the drainage areas of all the drainage grooves, that is, it will not be completely blocked, and the common catheter, because there are only two small holes that can enter, it is easy to be completely blocked by blood clots.

It should be understood by those skilled in the art that the embodiments of the present invention shown in the foregoing description and drawings are only examples and do not limit the present invention. The objects of the present invention have been fully and effectively accomplished. The functions and structural principles of the present invention have been shown and described in the embodiments, and the embodiments of the present invention may have any deformation or modification without departing from the principles.

Claims

An anti-blocking urinary catheter for operation is characterized in that it comprises:

A drainage section, the drainage section has at least two drainage grooves, the drainage groove has an opening, the opening communicates with the external space, the drainage section has a natural state and a guiding state, in the natural state the drainage the segment is curved, and in the guiding state, the drainage segment is substantially straight;

an airbag segment having an inflatable cavity and a second inner channel, the inflatable cavity surrounding the outside of the second inner channel;

a delivery section, the drainage section, the balloon section and the drainage section are integrally connected; and

An inflatable pipeline; the drainage section has a first inner passage, and the first inner passage communicates with the second inner passage of the airbag section and the third inner passage of the delivery section to form a guide passage , so as to pass through a guiding element to guide the drainage section from the natural state to the guiding state and be conveniently sent into the urethra of the human body, the inflation pipeline is arranged on the delivery section and communicates with the inflation cavity, In order to make the airbag section form an inflated state and an uninflated state, the conveying section has a third inner passage, and each of the drainage grooves communicates with the second inner passage and the third inner passage respectively to form a drainage The channel, the anti-blocking urinary catheter for surgery includes at least one closed area, and the closed area is covered and arranged on a partial opening of at least one of the drainage grooves.
The anti-blocking urinary catheter for surgery according to claim 1, wherein at least one opening of the drainage groove extends a predetermined distance from the outer end of the drainage section toward the direction of the balloon section.
The anti-blocking urinary catheter for surgery according to claim 1, wherein one of the closed areas extends upwardly from the balloon segment for a predetermined length.
The anti-blocking urinary catheter for surgery according to claim 1, wherein the drainage section comprises a first tube body and at least two guide vanes, the first tube body forms the first inner channel, and the guide vanes Extending radially outward from the first tube body for a predetermined height, and extending a predetermined length along the longitudinal direction of the first tube body, thereby forming the drainage groove.
The anti-blocking urinary catheter for surgery according to claim 1, wherein one of the drainage grooves is located at the inner bend of the drainage section, and the other drainage groove is located at the outer bend of the drainage section, and the other drainage groove is located at the inner bend of the drainage section. The opening length of the drainage groove of the road is smaller than the opening length of the drainage groove located in the outer bend.
The anti-blocking urinary catheter for surgery according to claim 1, wherein the drainage end has a plurality of drainage grooves, and the plurality of drainage grooves are equally distributed around the first inner channel.
The anti-blocking urinary catheter for surgery according to any one of claims 1-6, wherein the anti-blocking urinary catheter for surgery comprises a film layer, and the film layer is covered and arranged on the outer port of the guiding channel .
The anti-blocking urinary catheter for surgery according to any one of claims 1-6, wherein the anti-blocking urinary catheter for surgery includes a flushing interface, and the flushing interface is arranged on the delivery section, the The flush water interface communicates with the third inner channel to form a flush water channel.
The anti-blocking urinary catheter for surgery according to any one of claims 1-6, wherein the drainage section includes at least one protective leaf, and the protective leaf is arranged at the outer end of the guide leaf.
The anti-blocking urinary catheter for surgery according to claim 9, wherein the protective leaf is arranged on the outer end of the guide leaf in an arc shape, and a gap is formed between two adjacent protective leaves, so The gap communicates with the drainage groove and the outside, the drainage section, the airbag section and the delivery end are flexibly connected in one piece, the length of the closed area is set to match the position of the drainage groove where the closed area is set , the opening length of the drainage groove matches the setting position of the drainage groove.
A guideable catheter for surgery is characterized in that it includes: a front section of the catheter, a rear section of the catheter, a bending part, a drainage channel, a drainage outlet, at least one drainage groove and at least A drainage inlet, wherein the front section of the urinary catheter has a connecting end and an opposite end, the connecting end of the front section of the urinary catheter extends from the rear section of the urinary catheter, wherein the drainage channel forms At the rear section of the urinary catheter and communicated with the diversion inlet and the diversion outlet respectively, the drainage groove is opened on an outer surface of the front section of the urinary catheter and from the position of the diversion inlet Extending towards the end of the front section of the urinary catheter to guide the fluid on the peripheral side of the catheter to be guided along the drainage groove to the drainage inlet and then along the drainage channel toward the The rear section of the urinary catheter guides the flow to the diversion outlet, wherein at least a part of the front section of the urinary catheter close to the end is configured as a curved structure to form the curved portion.
The guideable catheter for surgery according to claim 11, wherein the number of the drainage grooves is multiple and arranged at intervals, at least one of the drainage grooves is at least partly located in the curved portion to provide a curved diversion area.
The guideable catheter for surgery according to claim 11, wherein the drainage groove is set to maintain a preset distance from the end of the front section of the catheter to allow all Said ends are set to be closed.
The guideable urinary catheter for surgery according to claim 11, wherein the drainage groove of the urinary catheter is set so that the position of the drainage inlet is linearly toward the The distal end of the urinary catheter extends.
The guideable urinary catheter for surgery according to claim 11, wherein the drainage groove of the urinary catheter is arranged to helically extend from the position of the drainage inlet toward The distal end of the urinary catheter extends.
The guideable catheter for surgery according to any one of claims 11 to 15, wherein the rear section of the catheter has an extension end and an opposite starting end, and the extension end is connected to the front section of the catheter The connection end, the diversion outlet is located at the initial end, the diversion inlet is multiple and arranged at the extension end, and each diversion inlet corresponds to one diversion groove And the diversion inlet is located in the extending direction of the diversion groove.
The surgical guide catheter according to any one of claims 11 to 15, wherein the front section of the catheter comprises a support column and at least two extension wings, and the extension wings extend from the peripheral side of the support column Extending outward and one drainage groove is formed between two adjacent extension wings, at least one drainage inlet is arranged on the support column of the front section of the urinary catheter to conduct the drainage Grooves and the guide channels.
A surgically steerable catheter according to any one of claims 11 to 15, wherein said catheter has an initial end, an opposite end, and a guide extending between said initial end and said end. channel, wherein the guide channel allows the insertion of a guide to guide the entry of the urinary catheter.
The surgical steerable urinary catheter according to any one of claims 11 to 15, wherein the urinary catheter further comprises an air bag and has a gas channel, the air bag is arranged at the rear section of the urinary catheter, The diversion inlet is arranged close to the end of the catheter front section relative to the balloon, wherein the balloon is configured to communicate with the gas channel to allow inflation of the gas channel by the gas channel. airbag.
The guideable catheter for surgery according to claim 11, wherein the number of the drainage grooves is multiple and arranged at intervals, at least one of the drainage grooves is at least partly located in the curved portion to provide a curved a drainage area, wherein the drainage groove is set at a preset distance from the end of the catheter front section to allow the end of the catheter front section to be closed, the catheter The end of the front section of the tube is set in a bullet shape, wherein the drainage groove of the urinary catheter is set so that the position of the drainage inlet is linearly facing the catheter along the extending direction of the catheter. The end of the urinary catheter is extended, wherein the rear section of the urinary catheter has an extension end and an opposite starting end, the extension end is connected to the connecting end of the front section of the urinary catheter, and the diversion outlet is located at At the starting end, the number of the diversion inlets is multiple and arranged at the extension end, each of the diversion inlets corresponds to one of the diversion grooves and the diversion inlets are located at the sides of the diversion grooves The direction of extension, wherein the urinary catheter has an initial end, an opposite end, and a guide channel extending between the initial end and the end, wherein the guide channel allows a guide to be inserted to guide the catheter catheter, wherein the urinary catheter further includes a balloon and has a gas channel, the balloon is arranged in the posterior section of the catheter, and the diversion inlet is close to the urinary catheter relative to the balloon The end of the front section of the tube is arranged, wherein the air bag is set to be communicated with the gas channel, so as to allow the air bag to be inflated through the gas channel, wherein the catheter further has a flushing channel, a flushing inlet and a flushing outlet, the flushing channel is connected to the flushing inlet and the flushing outlet respectively, the flushing outlet is set at the starting end of the rear section of the urinary catheter, and the flushing inlet is set at The support column of the front section of the urinary catheter is arranged on a back side of the curved part to allow flushing in other directions away from the curved direction of the urinary catheter, wherein the The length of the drainage groove at the back side is set to be longer than the length of the drainage groove at other positions, wherein the front section of the urinary catheter includes a support column and at least two extension wings, and the extension wings extend from the support column The peripheral side of the catheter extends outward and one drainage groove is formed between two adjacent extension wings, and at least one drainage inlet is arranged on the support column of the front section of the urinary catheter for conduction The drainage groove and the drainage channel, wherein the urinary catheter has a plurality of grooves and the grooves are arranged on the extension wings to communicate with two adjacent drainage grooves, wherein the extension wings It includes an extended side wall and an extended peripheral wall, the extended side wall extends outward from the support column, the extended side wall extends between the support column and the extended peripheral wall, and the extended wing The cross-section is configured as T-shape, wherein the opposite sides of the extension peripheral wall of the extension wing are configured to extend inward, so as to reduce irritation to the human body and allow the Large separation on opposite sides of extended perimeter wall Blood clots are small blood clots.
An external drainage catheter for surgery, characterized in that it includes: a drainage end, a fixed balloon and a catheter body, the drainage end, the fixed balloon and the catheter body are flexibly linear connected, the drainage end has at least two drainage grooves, and each of the drainage grooves is opened and extended backward from the drainage end for a predetermined distance, and the fixed airbag has an inner wall and an outer wall as well as an inner channel and a cavity, so An annular cavity is formed between the inner wall and the outer wall, the inner wall forms the inner passage, the drainage groove communicates with the inner passage, the catheter main body has a main passage, and the drainage end The drainage groove, the inner passage of the fixed air bag, and the inner passage of the catheter body are sequentially connected to form a drainage channel, and the catheter body has an inflatable channel, and the inflatable channel communicates with the cavity body.
The surgical external drainage catheter according to claim 21, wherein the drainage end has a communication hole, and the communication hole communicates with the drainage groove and the inner channel of the fixed balloon.
The surgical external drainage catheter according to claim 21, wherein the drainage groove extends at least partially along the drainage end to form an opening to communicate with the outside.
The surgical external drainage catheter according to claim 21, wherein the drainage end has at least two drainage surfaces, and the two drainage surfaces form the drainage groove.
The surgical external drainage catheter according to claim 21, wherein the drainage end has at least two drainage surfaces and at least one inner connection surface, and the inner connection surface is connected between the two drainage surfaces to form the drainage groove.
The surgical external drainage catheter according to claim 21, wherein the drainage end has a central channel, and the central channel communicates with the inner channel of the fixed balloon and the main channel of the catheter body to form A guide channel for passing through a guide element.
The surgical external drainage catheter according to claim 21, wherein the catheter body includes a flushing interface, and the flushing interface communicates with the main channel.
The surgical external drainage catheter according to claim 24 or 25, wherein a plurality of said drainage surfaces are radially connected to form a plurality of said drainage grooves.
The surgical external drainage catheter according to any one of claims 21-27, wherein the drainage end includes a covering area, and the covering area is covered and arranged at a partial position of the opening of the drainage groove.
The surgical external drainage catheter according to any one of claims 21-27, wherein the drainage end includes an outer arc surface, and the outer arc surface is located outside the drainage surface.