CN213490923U - Catheter - Google Patents

Abstract

The utility model provides a catheter, including the catheter body, catheter body front end is equipped with first sacculus, is the coniform structure by preceding diameter crescent to the back when first sacculus expandes, and the end of catheter body is provided with the first gas tube with first sacculus intercommunication, is provided with on the first sacculus and can supplies seal wire male through-hole with urethra body intercommunication, is provided with the elastic sealing element that can open or close the through-hole in through-hole department. The utility model provides a catheter is provided with first sacculus at the front end of catheter body, and the setting of this first sacculus is not only can with seal wire cooperation guide catheter put into human bladder, can also play the width of individualized expansion urethra through the volume that the first sacculus of control expandes, can suitably expand the urethra when the catheter front end passes through the constrictive place of urethra, guarantees that the ureter is put into smoothly and solves the constrictive problem of slight urethra.

Description

Catheter

Technical Field

The utility model belongs to the technical field of medical care apparatus technique and specifically relates to a catheter is related to.

Background

A urinary catheter is a tube that is inserted into the bladder from the urethra for draining the urine in the bladder. Is generally made of natural rubber, silica gel and PVC. The traditional Chinese medicine composition is mainly used for clinically treating unsmooth urine excretion caused by coma, paraplegia, urine retention, urinary surgery, bladder and urethra tumors and the like. In the existing catheter structure, the front end of the catheter, which is arranged in a patient body, is provided with an air bag (water sac), the catheter is inserted into a urethra, and the air bag is inflated and expanded after the front end of the catheter enters a bladder, so that the catheter can not fall off when being detained in the body, and the catheter plays a role in catheterization. However, in the actual process of placing the catheter, due to the tension of the patient or the slight stenosis of the urethra, the placing of the front end of the catheter is difficult, and a guide wire needs to be placed into the patient first, and then the catheter needs to be placed under the guidance of the guide wire. The front end of the existing catheter is closed, and the guide wire can only be led out from a urethral catheterization opening on the side wall of the catheter, so that the guide wire can be successfully placed in the catheter only by repeatedly trying. For the patients who can not be smoothly put into the ureter, only the needle or the blade can be manually used for opening the front section of the ureter and then the guide wire is used for putting. In practical operation, the operation is extremely dangerous, and the urinary tube is easy to damage and cannot be used. In addition, for patients with mild urethral stricture, the muscular contraction of the corpus cavernosum of the penis is often caused by discomfort or tension during the insertion of the ureter, and the operation difficulty is increased. If the patient can not be successfully placed in the urinary catheter for the first time, the pain of the patient's body and physiology is aggravated, and even the urinary catheter can not be placed in the urinary catheter under the vicious circle.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve current catheter when putting into, because the patient nervous or urethral slight narrow and can't directly put into the bladder with the catheter in, it is supplementary to need to use the seal wire, but the catheter is unfavorable and the shortcoming of putting into of unable high efficiency's completion catheter with the cooperation of seal wire provides a catheter.

The utility model provides a technical scheme that its technical problem adopted is: a catheter comprises a catheter body, wherein the tail end of the catheter body is arranged outside a human body, the front end of the catheter body is arranged in the human bladder, a first balloon is arranged at the front end of the catheter body, the first balloon is of a conical structure with the diameter gradually increasing from front to back when being unfolded, a first inflation tube communicated with the first balloon is arranged at the tail end of the catheter body, a through hole communicated with the catheter body and used for inserting a guide wire is formed in the first balloon, and an elastic sealing piece capable of opening or closing the through hole is arranged at the through hole.

Further, the through hole is formed in the center of the first balloon, and the aperture of the through hole is 1mm-2 mm.

Specifically, the elastic sealing element is arranged on one side, far away from the catheter body, of the through hole.

Specifically, the elastic sealing element comprises four fan-shaped elastic valves, the arc-shaped side edges of the elastic valves are fixed on the inner wall of the through hole of the first balloon, and the adjacent elastic valves can be abutted to each other to close the through hole of the first balloon.

Specifically, the thickness of the elastic valve is 0.5mm-1 mm.

Specifically, the resilient seal is integrally formed with the first balloon.

Further, the diameter of the first balloon when being unfolded is smaller than or equal to the outer diameter of the catheter body.

Specifically, the diameter of the first balloon when being unfolded is 3mm-5 mm.

Specifically, the first balloon has a length of 3mm to 8mm when deployed.

Furthermore, a second balloon is arranged on the outer wall of the catheter body, and a second inflation tube communicated with the second balloon is arranged at the tail end of the catheter body.

The utility model provides a catheter's beneficial effect lies in: the first balloon is arranged at the front end of the catheter body and can be inflated or filled with water through the first inflation tube at the tail end of the catheter body, so that the first balloon is unfolded to form a conical structure, the first balloon can be matched with a guide wire to guide the catheter to be placed into a bladder of a human body, the unfolded first balloon can be controlled in size to play a role in personalized expansion of the width of a urethra, when the front end of the catheter passes through a place with urethral stricture, the urethra can be properly expanded, the smooth placement of the urinary catheter is ensured, and the problem of mild urethral stricture is solved; and still be provided with the through-hole that can supply the seal wire to wear to establish on this first sacculus, be favorable to the cooperation of catheter and seal wire, still be provided with elastic sealing element on the through-hole simultaneously, this through-hole is opened to this elastic sealing element when the seal wire wears to locate the catheter body, and after the seal wire was withdrawn from by the catheter body, this through-hole can also be sealed to this elastic sealing element, prevents that the internal liquid of catheter from being internal to flow against each other by the catheter.

Drawings

Fig. 1 is a schematic perspective view of an initial state of a catheter provided by the present invention;

fig. 2 is a schematic perspective view of a catheter according to the present invention;

fig. 3 is a schematic perspective view of the catheter fixing after the catheter is placed in the utility model;

fig. 4 is a full sectional view of a catheter according to the present invention when it is inserted.

In the figure: 100-urinary catheter, 10-urinary catheter body, 11-front end, 12-tail end, 13-first inflation tube, 14-second inflation tube, 15-urethral orifice, 20-first balloon, 21-through hole, 22-elastic sealing element, 221-elastic valve, 30-second balloon, aperture of D1-through hole, diameter of D2-first balloon, diameter of D3-urinary catheter body, length of L1-first balloon and thickness of L2-elastic valve.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1-4, a catheter 100 is provided for the present invention, the catheter 100 being particularly suitable for use by patients with urethral strictures due to stress. The catheter 100 can be placed into the urethra of a patient with the aid of a guidewire to assist in the placement of the catheter 100.

Fig. 1 is a schematic perspective view of an initial state of a urinary catheter 100 according to the present invention. The urinary catheter 100 comprises a urinary catheter body 10, wherein the tail end 12 of the urinary catheter body 10 is arranged outside a human body, the front end 11 of the urinary catheter body 10 is arranged in the bladder of the human body, the front end 11 of the urinary catheter body 10 is provided with a first balloon 20, and the outer wall of the urinary catheter body 10 is provided with a second balloon 30. The catheter 100 is provided with a first balloon 20 and a second balloon 30 at its front end, respectively. The effect of two sacculums is different completely, wherein the utility model provides a first sacculus 20 in catheter 100 is located the foremost end of whole catheter body 10, its effect of playing is when catheter 100 puts into the patient internal, according to the constrictive degree of patient urethra, the volume that first sacculus 20 of control expandes, not only can expand the width of patient urethra through this first sacculus 20 individuality, can also increase the holding power and the intensity of catheter body 10 front end through first sacculus 20, and this first sacculus 20 can also cooperate with the seal wire, accomplish catheter body 10 and get into in patient's the bladder through the urethra by the patient is external. After the first balloon 20 completely enters the bladder of the patient, the first balloon 20 can be emptied to avoid the front end of the catheter body 10 protruding to cause irritation to the bladder of the patient. Meanwhile, the second balloon 30 disposed on the side of the front end of the catheter body 10 is unfolded, so that the front end of the catheter body 10 can be completely fixed in the bladder of the patient, the internal fixation of the catheter 100 is completed, and the urine in the bladder is drawn out through the catheter body 10.

Specifically, as shown in fig. 2, a schematic perspective view of a catheter 100 provided by the present invention when placed in a patient is shown. The first balloon 20 at the front end 11 of the catheter 100 has a conical configuration with a gradually increasing diameter from front to back when deployed. The conical structure of the first balloon 20 can facilitate the catheter tube 10 to extend into the urethra of a patient, and especially, when passing through a narrow area of the urethra, the catheter tube can be expanded by a structure with a conical surface at the front end, so that the catheter 100 can be conveniently placed into the urethra. The structure of first balloon 20 in catheter 100 provided by the present invention is particularly suitable for use by patients with stricture or urethral stricture resulting from cavernosum erection, making placement of catheter 100 safer and more comfortable.

Further, the distal end 12 of the catheter body 10 is provided with a first inflation tube 13 communicating with the first balloon 20, and the distal end 12 of the catheter body 10 is provided with a second inflation tube communicating with the second balloon 30. In actual use, during the process of placing the catheter 100 into the patient, as shown in fig. 2, the first balloon 20 is inflated with gas or liquid through the first inflation tube 13, so that the first balloon 20 can be properly deployed as required, and the first balloon 20 can contain 0.5ml to 0.8ml of gas or liquid. The catheter 100 can be easily inserted into the narrow area of the urethra by injecting gas or liquid into the first balloon 20 to expand the balloon into a cone-like structure at the front end 11 of the catheter. During insertion of catheter 100, second balloon 30 is in a collapsed state. After the front end 11 of the catheter 100 completely enters the bladder of the patient and urine flows out from the end 12 of the catheter 100, the second balloon 30 is inflated through the second inflation tube 14, the second balloon 30 is completely unfolded, so that the front end 11 of the catheter 100 is fixed in the bladder of the patient, then the liquid or gas in the first balloon 20 is pumped out through the first inflation tube 13, so that the first balloon 20 is folded, and the catheter 100 placed in the patient is shown in fig. 3. When the catheter 100 is placed in the body of a patient, the first balloon 20 is folded, so that the front end of the catheter 100 is prevented from being in a conical structure, and the inner wall of the bladder of the patient is prevented from being stimulated.

Further, in the urinary catheter 100 provided by the present invention, as shown in fig. 4, the first balloon 20 is provided with a through hole 21 communicating with the urethral canal for inserting a guide wire. The through hole 21 is provided mainly for the urinary catheter 100 to cooperate with a guide wire to complete the insertion of the urinary catheter body 10 of the urinary catheter 100. During the actual placement of the catheter 100, a guide wire is usually inserted first, and the catheter body 10 of the catheter 100 is then placed into the patient under the guidance of the guide wire. However, the conventional urinary catheter 100 has no opening at the front end of the urinary catheter body 10, so that the guide wire can only extend out through the urethral opening 15 on the side wall, and at this time, an included angle is formed between the guide wire and the urinary catheter body, which cannot ensure the auxiliary effect of the guide wire, so that the guide wire can be difficultly placed in the auxiliary urinary catheter. And in the utility model provides an among the catheter 100, the first sacculus 20 intercommunication that sets up on this catheter body 10 and the front end 11 to set up the through-hole 21 that can supply the seal wire to wear to establish on the first sacculus 20, this through-hole 21 make the seal wire wear to locate the catheter can not form the contained angle between the catheter body 10 with the seal wire, can be better insert patient's urethra with seal wire and the coaxial cooperation of catheter in, finally stretch into in the bladder.

Specifically, as shown in fig. 4, an elastic sealing member 22 for opening or closing the through hole 21 is provided at the through hole 21. The elastic sealing member 22 may be used to open or close the through hole 21 provided on the first balloon 20. When the catheter 100 is placed in a patient, a guide wire is needed for assisting, and the guide wire can pass through the through hole 21 and extend out of the front end of the catheter 100, so that the catheter 100 can be conveniently placed and used. After the catheter 100 is placed in a patient to be fixed, the guide wire in the catheter 100 needs to be taken out, and at this time, after the guide wire is taken out from the through hole 21 of the first balloon 20, the elastic sealing member 22 can be used for closing the through hole 21, so that the urine which has entered the catheter 100 is prevented from flowing back to the outside of the catheter 100 from the through hole 21, and the bladder is prevented from being stimulated by the backflow of the urine. The provision of the resilient sealing member 22 facilitates normal use of the catheter 100 after the catheter 100 is placed in a patient, avoiding urine backflow.

Further, as shown in fig. 2 and 4, in the urinary catheter 100 provided by the present invention, the through hole 21 is disposed at the center of the first balloon 20. The through hole 21 is mainly disposed to facilitate the threading of the guide wire, so the through hole 21 is disposed at the center of the first balloon 20 and is coaxial with the catheter body 10. The aperture D1 of the through hole 21 must be larger than the outer diameter of the guidewire. However, if the diameter of the through hole 21 is too large, the conical structure of the first balloon 20 cannot be secured, that is, the function of expanding the urethra at the distal end of the first balloon 20 cannot be achieved. The aperture D1 of the through hole 21 is thus 1mm to 2 mm.

Specifically, as shown in fig. 4, the elastic sealing member 22 in the first balloon 20 provided by the present invention can open or close the through hole 21 provided on the first balloon 20. When the guide wire is threaded into the through hole 21, an opening may be provided for the through hole 21 for the guide wire to pass out of the front end of the first balloon 20. When the guide wire is withdrawn from the catheter body 10, the through hole 21 can be closed to prevent the liquid in the catheter body 10 from flowing backward. Therefore, the elastic sealing member 22 is disposed on the side of the through hole 21 away from the catheter body 10.

Specifically, as shown in fig. 3, the resilient sealing member 22 is in a state of closing the through hole 21 after the catheter 100 is placed in the patient. The elastic sealing member 22 comprises four fan-shaped elastic valves 221, the arc-shaped side edges of the elastic valves 221 are fixed on the inner wall of the through hole 21 of the first balloon 20, and the adjacent elastic valves 221 can close the through hole 21 of the first balloon 20 when abutting against each other. The elastic sealing member 22 is an elastic film disposed at the through hole 21, and a cross-shaped opening is disposed on the elastic film, so that four fan-shaped elastic valves 221 are formed on the elastic film, and each fan-shaped elastic valve 221 has an arc-shaped side fixedly connected with the first balloon 20 and two mutually perpendicular sides. The adjacent elastic valves 221 close the through hole 2 by the mutual side edges, and prevent the liquid in the catheter 100 from flowing out from the through hole 21. The elastic sealing member 21 is required to have a certain thickness, so that the friction force generated when the elastic valves 221 abut against each other can be greater than the pushing force of the liquid in the catheter body 10 overflowing outwards. If the elastic valve 221 is too thin, it cannot close the through hole 21. If the elastic valve 221 is too thick, the guide wire cannot penetrate through the valve, which may damage the first balloon 20. The thickness L2 of the elastic valve 221 is therefore 0.5mm to 1 mm. In this embodiment, the resilient seal 22 is integrally formed with the first balloon 20. The elastic sealing member 22 and the first balloon 20 are both made of medical elastic silica gel, wherein the first balloon 20 can be unfolded into a cylindrical structure along with the filling of liquid or gas therein, and the elastic sealing member 22 can be unfolded from the center to form an opening along with the insertion of a guide wire.

Further, as shown in fig. 4, the diameter D2 of the first balloon 20 disposed at the front end 11 of the catheter 100 when deployed is equal to or less than the outer diameter D3 of the catheter body 10. The first balloon 20 mainly has the function of dilating the urethra when extending into the urethra of a patient by utilizing the conical structure thereof, and has a guiding and introducing function for the catheter body 10. If the diameter D2 of the first balloon 20 exceeds the catheter body 10, the catheter 10 is likely to cause discomfort to the patient during insertion, and thus, the catheter cannot be effectively introduced. In this embodiment, the diameter D2 of the first balloon 20 is smaller than the outer diameter D3 of the catheter body 10 even when the first balloon 20 is fully deployed.

Meanwhile, when the first balloon 20 disposed at the front end 11 of the catheter body 10 is unfolded, the inner through hole 21 is required to be provided for the guide wire to pass through, so the diameter of the first balloon 20 must be larger than the outer diameter of the guide wire. The first balloon 20 has a deployed diameter D2 of 3mm to 5mm and a deployed length L1 of 3mm to 8 mm. In this embodiment, the first balloon 20 has a deployed diameter D2 of 4mm and a deployed length L1 of 5 mm.

The utility model provides a catheter 100, be provided with first sacculus 20 at the front end 11 of catheter body 10, the first gas tube 13 of the terminal 12 of accessible catheter body 10 inflates it or fills water, thereby expand first sacculus 20 and be the coniform structure, the setting of this first sacculus 20 is not only can cooperate with the seal wire to guide catheter 100 to put into human bladder, can also play the effect of individualized extension urethra width through the volume of the first sacculus 20 of control expansion, can suitably expand the urethra when catheter 100 front end 11 passes through the narrow place of urethra, guarantee that the ureter is put into smoothly and solve the narrow problem of mild urethra; and the first sacculus 20 is also provided with a through hole 21 for the guide wire to pass through, which is beneficial to the matching of the catheter 100 and the guide wire, and the through hole 21 is also provided with an elastic sealing element 22, the elastic sealing element 22 opens the through hole 21 when the guide wire passes through the catheter body 10, and the elastic sealing element 22 can also seal the through hole 21 after the guide wire is withdrawn from the catheter body 10, so as to prevent the liquid in the catheter body 10 from flowing back from the catheter body 10.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. A catheter comprises a catheter body, wherein the tail end of the catheter body is arranged outside a human body, and the front end of the catheter body is arranged in the bladder of the human body.

2. The urinary catheter according to claim 1, wherein the through hole is formed at the center of the first balloon, and the diameter of the through hole is 1mm-2 mm.

3. A catheter according to claim 2, wherein said resilient sealing member is provided on a side of said through hole remote from said catheter body.

4. A catheter according to claim 3 wherein said resilient sealing member comprises four segmented resilient valves having arcuate side edges secured to the inner wall of said through-bore of said first balloon, adjacent ones of said resilient valves abutting one another to close said through-bore of said first balloon.

5. A catheter according to claim 4 wherein said resilient valve has a thickness of from 0.5mm to 1 mm.

6. A catheter according to claim 3 wherein said resilient sealing member is integrally formed with said first balloon.

7. A catheter according to claim 1 wherein said first balloon has an expanded diameter which is less than or equal to the outer diameter of said catheter body.

8. A catheter according to claim 7 wherein said first balloon has an expanded diameter of from 3mm to 5 mm.

9. A catheter according to claim 7 wherein said first balloon has an expanded length of from 3mm to 8 mm.

10. The urinary catheter according to claim 1, wherein a second balloon is provided on the outer wall of the catheter body, and a second inflation tube communicating with the second balloon is provided at the end of the catheter body.

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