WO2022236933A1 - Micro-groove drainage stent tube, anti-blocking stent tube having vanishing membrane, and anti-blocking stent tube kit - Google Patents

Abstract

A micro-groove drainage stent tube (1), an anti-blocking stent tube (91) having a vanishing membrane (920), and an anti-blocking stent tube kit (91000). The micro-groove drainage stent tube (1) has at least two micro-grooves (101) and a wire guide channel (102), wherein the micro-grooves (101) are located outside the wire guide channel (102) and extend uniformly with the wire guide channel (102); and each micro-groove (101) has an extension opening (1010), the extension opening (1010) being in communication with an external space. The micro-groove drainage stent tube (1) is adapted to be arranged in the ureter of a person.

Description

Microgrooved Drainage Stent Tubes, Anti-Clog Stent Tubes with Vanishing Film, and Anti-Clog Stent Tube Kits technical field

The invention relates to the field of medical supplies, and further relates to a microgroove drainage bracket tube, an anti-blocking bracket tube with a disappearing film and an anti-blocking bracket tube set.

Background technique

Double J tube, also known as double pigtail tube, gets its name because both ends are curled and each end is shaped like a pig's tail. The double J tube has the functions of stent and drainage, which can relieve temporary obstruction caused by ureteral inflammation and edema, and prevent postoperative wound leakage and ureteral stricture. At the same time, the collection system is not directly connected to the outside world, which can avoid bleeding and infection caused by nephrostomy; because there is no restriction and discomfort of external drainage tube, patients can get out of bed early, which is conducive to postoperative recovery.

The common double J tube is formed by a thinner tubular body, and a plurality of through holes are provided on the tube wall. Its two ends are elastic curly structures, which can be straightened under the guidance of the guide wire. The central channel of the ordinary double J tube connects the two ends.

With its tubular structure, the double J tube forms a supporting space in the ureter to prevent postoperative contraction of the ureter and make the urinary tract compensate, thus playing the role of a stent.

The model size of the double J tube is generally F4-F8, that is to say, the center channel size is only 1.3 to 2.5 mm. Therefore its internal central channel is not the drainage channel of the main body. Although there is a channel inside the double J tube, the essence of its working principle is that, with the peristalsis of the ureter, drainage is carried out along the outer wall of the double J tube instead of the central channel.

During the clinical use of double J tubes, especially after some kidney stones or ureteral calculus operations, there are debris and other debris in the urine. In this case, ureteral blockage is prone to occur, that is, double J The phenomenon of poor drainage of J tube.

On the other hand, due to the small internal size of the double J tube, a small amount of liquid entering the inside carries foreign matter such as gravel powder or blood clots, which makes the inside of the double J tube prone to clogging.

In addition, based on the structure of the ordinary double J tube, its surface is flat, and the liquid is guided in the ureter by means of the gap between its surface and the ureter, and the gap is small, and when the ureter is damaged or after surgery, the peristaltic effect of the ureter will be reduced Relatively weakened, so the dynamic delivery channel between the surface of the double J tube and the ureter becomes smaller, and thus prone to blockage.

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

The stent tube can be used in the human body or in the animal body to play a supporting role. The double J tube is a typical stent tube, which can also be called a ureteral stent or a pigtail catheter, and is suitable for being placed in the ureter for support and drainage. Double J tubes are widely used in upper urinary tract operations such as kidney stones, ureteral stones, hydronephrosis, kidney transplantation, benign tumors of the kidney and ureter, and dilation of renal and ureteral strictures. The two ends of the double J tube have a certain self-curling performance, which can be coiled in the patient's kidney or bladder for positioning. The middle part of the double J tube is a round tube, which is suitable for being placed in the ureter and plays a role to drainage.

When there are certain fixed foreign bodies in the kidney that need to be discharged to the bladder through the ureter, such as some small broken stones after kidney stone surgery, they will be discharged through the space between the double J tube and the ureter. In detail, the function of the ureter is to transport urine from the kidney to the bladder. Under normal conditions, the pacemaker site proximal to the urinary collecting system spontaneously generates action potentials, passes through the ureteropelvic junction, and passes through the middle between muscle cells. The connection conducts along the ureter to the distal end, causing the ureteral smooth muscle to contract sequentially from top to bottom, manifested as top-to-bottom peristalsis of the ureter. As shown in Figure 11, the pipeline of the ureter itself is relatively narrow, and the double J tube 91P is also designed to be thinner. After the double J tube 91P is placed in the ureter, foreign matter such as stones enters the ureter and cannot pass through directly. The double J tube 91P needs to be squeezed between the ureter and the double J tube 91P to be discharged. Since the ureter is placed with a circular double J tube 91P, there is less space for foreign bodies to pass through, which makes some larger foreign bodies may stay in the ureter, or, when foreign bodies pass through the ureter due to Foreign objects scrape the inner wall of the ureter and cause discomfort and even inflammation.

The double J tube 91P generally needs to be left in the body for a long period of time. Once blockage occurs, the double J tube 91P may need to be taken out and replaced, which undoubtedly increases the pain for the patient.

Contents of the invention

One object of the present invention is to provide a micro-groove drainage stent tube, which forms a plurality of extended micro-grooves on the outer surface to expand the dynamic delivery space between the outer surface of the micro-groove drainage stent tube and the ureter.

Another object of the present invention is to provide a microgroove drainage stent tube, which includes a plurality of stent pages formed on the outer surface of the main body, and supports the ureter while separating and forming the microgrooves. effect.

Another object of the present invention is to provide a micro-groove drainage support tube, wherein at least one curled end of the micro-groove drainage support tube forms a wedge-shaped head, and the surface of the wedge-shaped head is smooth, so as to facilitate the introduction of the micro-groove drainage support tube into the human body ureter.

Another object of the present invention is to provide a micro-groove drainage support tube, which forms a plurality of isolated micro-grooves on the surface of the main body, so as to conduct drainage in a way of splitting and guiding.

Another object of the present invention is to provide a microgroove drainage stent tube, wherein based on the peristaltic process of the human ureter, the microgroove and the inner surface of the ureter respectively form a dynamically changing delivery space, and each delivery space communicates in a relatively isolated manner, so The overall clogging is not easy to occur, that is to say, the probability of all the microgrooves being clogged is low.

Another object of the present invention is to provide a microgroove drainage support tube, wherein in one embodiment, the layout and volume distribution of the microgrooves match the crimping direction of the crimping head.

Another object of the present invention is to provide a microgroove drainage support tube, wherein in one embodiment, the microgroove drainage support tube has at least one covering area, and the covering area covers the opening partial area of the microgroove .

An object of the present invention is to provide an anti-clogging stent tube with a disappearing film and an anti-clogging stent tube set, wherein the anti-clogging stent tube with a disappearing film can help discharge foreign matter to minimize the occurrence of clogging problems.

Another object of the present invention is to provide an anti-blocking stent tube with a disappearing film and an anti-blocking stent tube set, wherein the side surface of the anti-blocking stent tube with a disappearing film is arranged with a groove, and the groove makes the stent tube The cross-section is smaller, which facilitates the discharge of larger foreign bodies.

Another object of the present invention is to provide an anti-blocking stent tube with a disappearing film and an anti-blocking stent tube set, wherein the groove is provided with a certain length and specification so that foreign matter can pass along the anti-blocking stent tube with a disappearing film. The groove of the anti-blocking stent tube is drained along the ureter.

Another object of the present invention is to provide an anti-blocking stent tube with a disappearing film and an anti-blocking stent tube set, wherein although the anti-blocking stent tube with a disappearing film is provided with the groove, the groove The existence of does not cause too much interference to the tube feeding process.

Another object of the present invention is to provide an anti-blocking stent tube with a disappearing film and an anti-blocking stent tube kit, wherein the stent tube includes a tube body and a disappearing film, wherein the groove is formed on the tube body The side surface and the disappearing film are wrapped on the tube body to cover the groove, so that the groove is hidden during the tube insertion process, so that the stent tube can be smoothly pushed into the expected position.

Another object of the present invention is to provide an anti-blocking stent tube and an anti-blocking stent tube set with a disappearing film, wherein the disappearing film will naturally disappear within a period of time into the tube and will not cause harm to the human body. May be exposed to accommodate foreign objects and guide their forward movement.

In order to achieve at least one of the above objectives, one aspect of the present invention provides a microgroove drainage stent tube, which has at least two microgrooves and a guide wire channel, the micro groove is located outside the guide wire channel, and the guide wire The channel extends uniformly, the microgroove has an extension opening, and the extension opening communicates with the external space, and the microgroove drainage support tube is suitable for being arranged in the ureter of a human body.

The microgroove drainage support tube according to one embodiment, wherein the microgroove drainage support tube includes a main body and at least two stent pages, the main body forms the guide wire channel, and each of the stent pages is roughly along the body. vertical set.

According to one embodiment, the microgroove drainage stent tube has a guiding state and a crimped state, and in the guiding state, the microgroove drainage stent tube is approximately in a straight line state, so as to be placed in the ureter of a human body; In the crimped state, at least one end of the microgroove drainage support tube is crimped.

The microgroove drainage support tube according to one embodiment, wherein the microgroove drainage support tube includes a curled end, the curled end is integrally connected to the main body, and one of the microgrooves is bent inwardly from the curled end A channel extends to the main body, and the guide wire channel extends to communicate with the crimped end.

According to one embodiment of the microgroove drainage support tube, one of the microgrooves extends from the outer bend of the curled end to the main body.

The microgroove drainage support tube according to one embodiment, wherein the microgroove drainage support tube includes two curled ends, and the two curled ends are respectively connected to the two ends of the main body in opposite directions, and the guide wire channel extends Connect each of the crimped ends.

According to one embodiment of the microgroove drainage support tube, the main body has a communication hole, and the communication hole communicates with the guide wire channel of the main body and the microgroove.

The microgroove drainage support tube according to one embodiment includes a wedge-shaped head, and the wedge-shaped head is arranged at the end of the crimped end.

The microgroove drainage support tube according to one embodiment includes a reinforced area, and the reinforced area is covered and arranged on a partial area of the extension opening of the microgroove.

According to the microgroove drainage support tube described in one embodiment, it has a plurality of microgrooves, which are equally distributed around the guide wire channel, the number of the microgrooves is selected from 2, 3, 4, 5, and the microgrooves The overall size model of the drainage support tube 1 is F5-F8mm. The microgroove drainage support tube includes two crimped ends, and the two crimped ends are respectively connected to the two ends of the main body in opposite directions, and the guide wire channel is extended and communicated with For each crimped end, the main body has a communication hole, the communication hole communicates with the guide wire channel of the main body and the microgroove, which includes a wedge-shaped head, and the wedge-shaped head is arranged on the crimped The end of the end, which includes a reinforced area, the reinforced area is covered with the partial area of the extension opening of the micro groove, wherein one of the micro grooves extends from the inner bend of the crimped end to the main body , the other microgroove extends from the outer bend of the crimped end to the main body, and has a scale mark, the scale mark is used to indicate the length of the microgroove drainage bracket tube, all the microgrooves The opening size of the extension opening is matched with the setting position of the microgroove, which includes a retaining wall, and the retaining wall is arranged on the end of the bracket page in an arc shape, and between two adjacent retaining walls A gap is formed, and the gap communicates with the microgroove and the external space, and a plurality of the retaining walls are arranged on the exterior of the plurality of support sheets to form a substantially annular outer surface.

According to one aspect of the present invention, the present invention provides an anti-blocking stent tube with a disappearing film, which is suitable for being placed in the body of a person in need, wherein the anti-blocking stent tube includes:

a vanishing film; and

A stent tube body, wherein the stent tube body has at least one groove and the stent tube body has a side surface, at least part of the side surface is recessed to form the groove, the groove is arranged along Extending along the length direction of the main body of the stent tube, wherein the vanishing film is coated on the side surface of the main body of the stent tube to allow the surface of the anti-blocking stent tube to be a smooth arc surface and the vanishing film The film is configured to disappear after the anti-blocking stent tube is placed in the demander's body for a preset period of time to expose the groove, so as to pass through the anti-blocking stent tube at the position of the anti-blocking stent tube and the demander. Objects in between provide space.

According to an embodiment of the present invention, the anti-blocking bracket tube has an outlet and at least one inlet, the bracket tube main body has a front end, an opposite rear end and an installation channel, wherein the outlet is arranged on the the rear end of the bracket pipe body, the installation channel extends from the outlet toward the front end of the bracket tube body and the inlet is arranged between the front end of the bracket tube body and the outlet The preset position between and the inlet and the outlet are respectively communicated with the installation channel.

According to an embodiment of the present invention, the inlet is arranged at the position of the groove.

According to an embodiment of the present invention, the stent tube body includes a tube body, a curved front section and a curved rear section, the curved front section and the curved rear section are respectively arranged at both ends of the tube body and are suitable for Bend into shape.

According to an embodiment of the present invention, the stent tube body includes a strut and at least two separation petals, wherein the separation petals are configured to extend outward from the peripheral side of the strut, and the groove is formed on The two separate petals.

According to an embodiment of the present invention, the number of the grooves is multiple, and the curved front section has a curved front side and a curved back side, the curved front side and the curved back side are opposite, and The part of the stent tube body bent toward the positive side of the curve forms the front section of the curve, and the length of the groove arranged on the back side of the curve is set to be longer than that of the groove disposed on the positive side of the curve. The length of the trench.

According to an embodiment of the present invention, the number of the grooves is multiple and arranged at intervals, and each of the grooves is arranged to extend from the curved front section to the pipe body.

According to an embodiment of the present invention, the number of the grooves is multiple and arranged at intervals, and the pipe body has a side surface of the pipe body, and at least part of the side surface of the pipe body is recessed to form a plurality of the grooves. groove.

According to an embodiment of the present invention, the vanishing film is arranged around the main body of the stent tube.

According to an embodiment of the present invention, the anti-blocking bracket tube has an outlet and at least one inlet, the bracket tube main body has a front end, an opposite rear end and an installation channel, wherein the outlet is arranged on the the rear end of the bracket pipe body, the installation channel extends from the outlet toward the front end of the bracket tube body and the inlet is arranged between the front end of the bracket tube body and the outlet and the inlet and the outlet respectively communicate with the installation channel, wherein the number of the grooves is three, four, five or six, and the curved front section has a curved The positive side and a curved back side, the curved positive side and the curved back side are opposite, and the part of the stent tube body bent toward the curved positive side forms the curved front section, which is arranged on the curved The length of the groove on the back side is set to be greater than the length of the groove arranged on the positive side of the bend, the mounting channel extends from the rear end to the front end of the bracket pipe body and The mounting channel is exposed to the front end, wherein the vanishing film is filled in the groove so that one side surface of the bracket pipe main body is an arc surface, wherein the groove is set from the bracket The front end of the pipe body extends to the rear end, or at least two of the grooves are arranged side by side and spaced apart in the length direction of the bracket pipe body, or each of the grooves is close to the One end of the rear end of the stent tube main body is set in a stepped shape, the closer to the curved back side, the closer the groove is to the rear end of the stent tube main body, one of which is installed The component is adapted to pass through the main body of the stent tube through the installation channel to guide the anti-blocking stent tube into the tube.

Description of drawings

Fig. 1 is a schematic perspective view of a crimped state of a microgroove drainage stent tube according to a first embodiment of the present invention.

Fig. 2 is a schematic cross-sectional view of the microgroove drainage support tube according to the first embodiment of the present invention.

Fig. 3 is a schematic diagram of the guiding state of the microgroove drainage stent tube according to the first embodiment of the present invention.

4A and 4B are schematic diagrams of distribution of microgrooves in the microgroove drainage stent tube according to the first embodiment of the present invention.

Fig. 5 is a schematic diagram of the use of the microgroove drainage support tube according to the first embodiment of the present invention.

Fig. 6 is a modified embodiment of microgroove volume change of the microgroove drainage stent tube according to the first embodiment of the present invention.

Figures 7A-7C are variant embodiments of the number of microgrooves of the microgroove drainage stent tube according to the first embodiment of the present invention.

Fig. 8 is a schematic perspective view of a microgroove drainage support tube according to a second embodiment of the present invention.

Fig. 9 is a schematic diagram of a microgroove drainage support tube 1 according to a third embodiment of the present invention.

Fig. 10 is a partial schematic diagram of a microgroove drainage stent tube according to a fourth embodiment of the present invention.

Fig. 11 is a schematic diagram of the application of a current stent tube.

Fig. 12A is a schematic diagram of an anti-blocking stent tube with a disappearing film according to a preferred embodiment of the present invention.

Fig. 12B is a schematic diagram of the anti-blocking stent with disappearing film after the disappearing film disappears according to the above-mentioned preferred embodiment of the present invention.

Fig. 12C is a schematic diagram of the application of the anti-blocking stent tube set according to a preferred embodiment of the present invention.

Fig. 13A is a partial schematic diagram of the anti-blocking stent tube with disappearing film according to the above-mentioned preferred embodiment of the present invention.

Fig. 13B is another partial schematic view of the anti-blocking stent tube with disappearing film according to the above-mentioned preferred embodiment of the present invention.

Fig. 13C is a schematic diagram of the application of the anti-blocking stent tube with disappearing film according to the above-mentioned preferred embodiment of the present invention.

Fig. 14 is a schematic diagram of the anti-blocking stent tube with disappearing film according to another preferred embodiment of the present invention.

15A to 15C are partial schematic diagrams of three modified implementations of the anti-blocking stent tube with disappearing film according to the above-mentioned preferred embodiment of the present invention.

16A to 16C are schematic diagrams of the anti-blocking stent tube with disappearing film according to another preferred implementation of the present invention.

Fig. 17 is a schematic diagram of the anti-blocking stent tube with disappearing film according to another preferred embodiment of the present invention.

Fig. 18 is a schematic diagram of the anti-blocking stent tube with disappearing film according to another preferred embodiment of the present invention.

Fig. 19 is a schematic diagram of the anti-blocking stent tube with disappearing film according to another preferred 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 can 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. 1 is a schematic perspective view of a crimped state of a microgroove drainage stent tube according to a first embodiment of the present invention. Fig. 2 is a schematic cross-sectional view of the microgroove drainage support tube according to the first embodiment of the present invention. Fig. 3 is a schematic diagram of the guiding state of the microgroove drainage stent tube according to the first embodiment of the present invention. 4A and 4B are schematic diagrams of distribution of microgrooves in the microgroove drainage stent tube according to the first embodiment of the present invention. Fig. 5 is a schematic diagram of the use of the microgroove drainage support tube according to the first embodiment of the present invention.

Referring to Fig. 1 to Fig. 5, the present invention provides a microgroove drainage stent tube 1, said microgroove drainage stent tube 1 is used to be arranged in the ureter of the human body, and forms the role of support and drainage in the ureter to prevent the ureter from shrinking and blocking .

The microgroove drainage support tube 1 has a plurality of microgrooves 101 and a guide wire channel 102, and each of the microgrooves 101 communicates with the outside for drainage. The guide wire channel 102 is located inside, and is used to pass through the guide wire 2 to guide the microgroove drainage stent tube 1 to enter the human ureter. That is to say, each of the microgrooves 101 is located outside the guide wire channel and extends in unison with the guide wire channel.

Each of the microgrooves 101 has an extension opening 1010, and the extension opening 1010 communicates with the external space. Further, the extension opening 1010 extends longitudinally to communicate with the external space.

In this embodiment of the present invention, the microgroove drainage support tube 1 has three microgrooves 101 , which are a first microgroove 1011 , a second microgroove 1012 and a third microgroove 1013 . The first microgroove 1011 , the second microgroove 1012 and the third microgroove 1013 are respectively located outside the guide wire channel 102 . Furthermore, the first microgrooves 1011 , the second microgrooves 1012 and the third microgrooves 1013 are symmetrically distributed outside the guidewire channel 102 with respect to the central axis of the guidewire channel 102 .

It is worth mentioning that in this embodiment of the present invention, the microgroove drainage support tube 1 includes three microgrooves 101 as an example for illustration. In other embodiments of the present invention, the microgrooves The drainage support tube 1 may also have other numbers and layouts of the microgrooves 101, such as four, five, six, etc., and the present invention is not limited in this respect.

It is worth mentioning that, based on the working process of the ureter, the microgroove drainage stent tube 1 forms a plurality of extended microgrooves on its outer surface to expand the distance between the outer surface of the microgroove drainage stent tube 1 and the ureter. Dynamic delivery space.

The microgroove drainage stent tube 1 includes a main body 10 and a plurality of stent leaves 20 , and the main body 10 forms the guide wire channel 102 . That is to say, the main body 10 has a substantially tubular structure. Each of the bracket pages 20 has a substantially sheet-like structure, extending from a predetermined position at one end of the main body 10 to a predetermined position at the other end of the main body 10 along the extending direction of the main body 10 . In this embodiment of the present invention, the microgroove drainage support tube 1 includes three support sheets 20 , which are separated to form three microgrooves 101 . In other embodiments of the present invention, the bracket pages 20 may also have other numbers and shapes. Preferably, each bracket leaf 20 is connected to the main body 10 approximately vertically in the transverse direction.

It is also worth mentioning that a plurality of the bracket pages 20 radially extend outwards with a predetermined height centered on the main body 10 to form the microgrooves 101, thereby making the bracket pages 20 close to the ureter The inner wall acts as a support. That is to say, a plurality of stent leaves 20 are formed on the outer surface of the main body 10 to support the ureter while separating and forming the microgrooves 101 , that is, the stent leaves 20 have the function of stent support.

The micro-groove drainage support tube 1 forms a plurality of isolated micro-grooves 101 on the surface of the main body 10, so as to perform drainage in a way of splitting and guiding. That is to say, the microgroove drainage stent tube 1 prevents the occurrence of blockage from multiple aspects, such as diversion of multiple microgroove channels, support expansion of the support leaf 20 and extension of the open space of the microgroove.

It is also worth mentioning that the overall size model of the microgroove drainage support tube 1 is F5-F8mm. Preferably F6-F7mm. That is to say, the overall space diameter of the microgroove 101 drainage tube is 1.6mm-2.6mm, and since the diameter of the microgroove drainage bracket tube 1 is composed of the main body 10 and the bracket leaf 20 , and the function of the main body 10 of the guide wire channel 102 is to pass through the guide wire 2, so the size of the guide wire channel 102 can be smaller than the central channel of the traditional double J tube, thereby relatively expanding the external dynamic drainage space. That is, the space of the microgroove and the space of the ureter gap formed by the extension of the support leaf 20 .

Referring to Fig. 1 and Fig. 3, described microgroove drainage stent tube 1 has a guiding state 200 and a crimped state 100, and in described guiding state 200, described microgroove drainage stent tube 1 is approximately in a straight line state, so that guide into In vivo: In the crimped state 100, both ends of the microgroove drainage stent tube 1 are in a crimped state 100, so as to be fixed in vivo.

Referring to 1, Fig. 4A, 4B, the microgroove drainage support tube 1 includes two crimped ends, respectively a first crimped end 30 and a second crimped end 40, the first crimped end 30 and the second crimped end Ends 40 are respectively provided at both ends of the main body 10, so as to fix the position of the microgroove drainage stent tube 1 after it is installed in the human ureter. In this embodiment of the present invention, the first curled end 30 and the second curled end 40 are curled in opposite directions, that is, the first curled end 30 and the second curled end 40 are curled around the main body 10 directions on both sides. In other embodiments of the present invention, the first curled end 30 and the second curled end 40 are curled in the same direction, that is, the first curled end 30 and the second curled end 40 are curled around the main body 10 on the same side. Preferably, the first crimped end 30 and the second crimped end 40 are crimped in opposite directions, so as to more stably fix the microgroove drainage support tube 1 .

The microgrooves 101 extend from the crimped end to the main body 10 , that is to say, both the crimped end and the main body 10 have the microgrooves communicating with each other, so as to conduct drainage as a whole.

Further, in this implementation of the invention, both the first crimped end 30 and the second crimped end 40 have the microgrooves 101, that is to say, the microgrooves 101 continuously extend from one crimped end to said another said crimped end. For example, the microgroove 101 extends from the first curled end 30 to the main body, and further extends to the second curled end 40 .

For example but not limited thereto, one of the microgrooves 101 is located on the inner side of the crimped ends 30 , 40 , and the other microgroove 101 is located on the outer bend of the crimped ends.

For example, when the microgroove drainage stent 1 is placed in the human ureter, one curled end is located in the human renal pelvis, and the other end is located in the human bladder, thereby establishing a drainage path in the human ureteral channel.

In the guiding state 200, the guide wire 2 passes through the guide wire channel 102, so that the microgroove drainage stent tube 1 is straightened, or roughly straight, so as to be conveniently placed in the human ureter; State 100, the first curled end 30 and the second curled end 40 are in a naturally curled state 100, which is convenient for fixing in human organs.

In this embodiment of the present invention, the microgroove drainage support tube 1 has two curled ends as an example for illustration, that is to say, the fixed structure at both ends of the substantially double J tube is formed. In other aspects of the present invention In general, the microgroove drainage support tube 1 may also have one curled end, that is, a single-end fixing method, and the present invention is not limited in this respect.

In one embodiment of the invention, the three bracket pages 20 are evenly distributed on the outer surface of the main body 10, that is, three uniformly distributed microgrooves 101 are formed on the outer surface of the main body 10. . In another embodiment of the present invention, the three supports are distributed non-uniformly, for example, the intervals are gradually increased, for example, the size of the first microgroove 1011 is larger than that of the second microgroove 1012, and the size of the first microgroove 1012 is larger than that of the second microgroove 1012. The size of the second microgroove 1012 is larger than the size of the third microgroove 1013 .

In this embodiment of the present invention, referring to FIG. 1 , the opening angles of the first microgrooves 1011 , the second microgrooves 1012 and the third microgrooves 1013 are all approximately 120 degrees. The first end of the first microgroove 1011 is curved and extends to the inner curve of the first curled end 30 , and the second end of the first microgroove 1011 extends to the outer curve of the second curled end 40 . The first ends of the second microgrooves 1012 and the third microgrooves 1013 are symmetrically distributed on the outer bend of the first curled end 30, the second microgrooves 1012 and the third microgrooves 1013 The second end of the second end extends from the inner bend of the second curled end 40 . That is, an S-shaped reverse bend.

It is worth mentioning that, in this embodiment of the present invention, the inner curve of the first curled end 30 has one microgroove 101, and the outer curve has two microgrooves 101, that is, the The inner runner space of the first curled end 30 is smaller than the outer runner space, and the inner bend of the second curled end 40 has two microgrooves 101, and the outer bend has one microgroove 101, that is, the The outer channel space of the second crimped end 40 is larger than the inner channel space, and further, combined with the arrangement direction of the ureter and the direction of gravity, the liquid flows from top to bottom, therefore, the first crimped end 30 is suitable for being set On the upper side, that is, it is suitable to be arranged in the renal pelvis, and the external large flow enters, and the second crimped end 40 is suitable to be arranged on the lower side, that is, under the action of gravity, even if the flow channel is small, it will not affect the flow of liquid. flow.

It is also worth mentioning that, since the two ends of the traditional double J tube have exactly the same structure, there is no distinction between the upper and lower sides. However, in the embodiment of the present invention, the microgroove drainage support tube 1 is distributed based on the different structures at both ends. It cooperates with the position of the drainage, and has a difference between the upper and lower positions, or corresponds to the organ at the specific position. The first crimped end 30 is suitable for being arranged in the human renal pelvis, and the second end is suitable for being arranged in the human bladder.

Further, the first crimped end 30 and/or the second crimped end 40 have position markings, so that users can quickly distinguish the positions of the upper and lower ends. For example, a color logo is set on the first curled end 30 , or a symbolic logo is set on each of the first curled end 30 and the second curled end 40 .

The micro-groove drainage stent tube 1 includes at least one wedge-shaped head, and the wedge-shaped head is arranged at the end of the crimped end, so as to guide the micro-groove drainage stent tube 1 into the human ureter in the guiding state 200 .

In this embodiment of the present invention, the microgroove drainage support tube 1 includes two wedge-shaped heads, respectively a first wedge-shaped head 31 and a second wedge-shaped head 41, and the two wedge-shaped heads are respectively arranged on the first wedge-shaped head A crimped end 30 and said second crimped end 40 .

The longitudinal section of the wedge-shaped head is substantially trapezoidal, that is to say runs obliquely. Furthermore, the wedge-shaped head extends outwards gradually, thereby facilitating entry into the ureter with a small size.

Further, the micro-groove 101 extends inwardly from the lower end of the wedge-shaped head, that is to say, the position of the wedge-shaped head is not provided with the micro-groove 101, and its surface is a smooth arc surface, thereby preventing the , the bifurcated end of the support sheet 20 directly contacts the inner membrane of human organs. When the microgroove drainage support tube 1 includes two wedge-shaped heads, the microgroove 101 extends between the two wedge-shaped heads.

In an embodiment of the present invention, the micro-groove drainage bracket tube 1 is manufactured and formed by integral molding, such as forming the main body 10, the bracket leaf 20, and the micro-groove drainage bracket tube 1 at one time. The crimped end and the wedge-shaped head and other components. Or it is formed by multiple molding methods, for example, the main body 10 is integrally formed first, and then the curled end, the support leaf 20 and the wedge-shaped head are formed.

Further, the micro-groove drainage support tube 1 is provided with a scale mark, and the scale mark is used to indicate the length of the micro-groove drainage support tube 1, and the length matches the model. Different people use different models.

For example, the use process of the microgroove drainage stent 1 is as follows: at the end of the patient's operation, firstly, the guide wire 2 is inserted along the ureter, and then the microgroove drainage stent 1 is introduced along the guide wire 2, and then the catheter is pulled out. Wire 2, so that the microgroove drainage support tube 1 is in a crimped state 100, that is, the tube is finished.

It is worth mentioning that, with reference to Figure 5, during the drainage work of the microgroove drainage stent tube 1, for example, in patients with kidney stones, there are gravel powder or particles in their urine, if the traditional surface is flat Double J tube, in the case of possible stenosis and peristaltic changes after ureterectomy, the delivery space between the double J tube and the ureter becomes smaller, and the particles are delivered in the same connected channel, so blockage is prone to occur in local locations. However, based on the embodiment of the present invention, the microgroove drainage support tube 1 forms a plurality of microgrooves on the surface due to the arrangement of the support leaf 20, so that the liquid mixed with particles will not be in the same channel, and the support leaf 20 The support function prevents the inner wall of the ureter from being too close to the surface of the ureter. That is to say, theoretically, no matter how the ureter shrinks, the microgrooves formed between the stent pages 20 always exist, that is, the ureter and the microgroove drainage stent tube 1 There is a stable delivery space between them. On this basis, with the peristaltic work of the ureter, the dynamic delivery space is expanded and the probability of blockage is reduced.

Based on the peristaltic process of the human ureter, the microgroove 101 and the inner surface of the ureter each form a dynamically changing delivery space, and each delivery space is relatively isolated and communicated, so the overall blockage is not easy to occur, that is, the patient is using The risk of clogging of the microgrooves 101 being clogged is reduced.

FIG. 6 is a modified embodiment of microgroove volume change of microgroove drainage support tube 1 according to the first embodiment of the present invention.

In the above embodiments of the present invention, the sizes of the first microgrooves 1011 , the second microgrooves 1012 and the third microgrooves 1013 are approximately the same. In this embodiment of the present invention, the dimensional changes of the first microgrooves 1011 , the second microgrooves 1012 and the third microgrooves 1013 are determined according to positions. In other words, the size of the opening of the microgroove 101 matches the location of the microgroove 101 .

Further, taking the first curled end 30 as an example, the first microgroove 1011 is located at the inner curve of the curl, and the second microgroove 1012 and the third microgroove 1013 are close to the outer curve. The opening size of the first microgroove 1011 is larger than that of the second microgroove 1012 and the third microgroove 1013 , and the opening size of the second microgroove 1012 and the third microgroove 1013 are the same.

7A-7C are modified embodiments of the number of microgrooves of the microgroove drainage support tube 1 according to the first embodiment of the present invention.

In the above-mentioned embodiment of the present invention, the microgroove drainage support tube 1 includes three support pages 20 and three microgrooves 101 are formed as an example for illustration. In this modified embodiment of the present invention, The bracket pages 20 are 4 and 5 respectively, and the corresponding microgrooves 101 are 4 and 5 respectively.

Referring to FIG. 7A , the number of the bracket pages 20 and the microgrooves 101 can be two, and the outer ends of the bracket pages 20 are provided with protective walls.

Fig. 8 is a schematic perspective view of the microgroove drainage support tube 1 according to the second embodiment of the present invention.

In this embodiment of the present invention, the microgroove drainage support tube 1 includes a reinforced area 50, and the reinforced area 50 is covered and arranged in a partial area of the opening of the microgroove 101, that is to say, the covering area It is connected to the local positions at the tops of two adjacent bracket pages 20 .

It is worth mentioning that since the overall size of the microgroove 101 bracket drainage tube is relatively small, and the size of the microgroove is smaller, and the bracket leaf 20 is a flexible sheet, so through the setting of the reinforcement area 50, on the one hand, the The micro-groove drainage support tube 1 as a whole is convenient to enter the ureter. On the other hand, during the drainage work, the relative positions of the two support pages 20 are relatively fixed, which can further reduce the occurrence of blockage.

Further, a plurality of the reinforcing regions 50 are respectively arranged at different positions of the plurality of microgrooves 101 , thereby enhancing the shape-keeping performance of the microgroove drainage support tube 1 as a whole. Preferably, the setting heights of the reinforcing regions 50 corresponding to two adjacent microgrooves 101 are different.

Fig. 9 is a schematic cross-sectional view of the microgroove drainage support tube 1 according to the third embodiment of the present invention.

In this embodiment of the present invention, the microgroove drainage support tube 1 includes a retaining wall 21, and the retaining wall 21 is arranged on the outer end of the support leaf 20 to prevent the ends of the support leaf 20 from directly contacting The outside, for example, prevents the end surface of the thin layer of the stent leaf 20 from directly contacting the intima of the human ureter, causing adverse irritation and damaging the intima.

Preferably, the protective wall 21 is arranged on the outer end of the bracket leaf 20 in an arc shape. In other embodiments of the present invention, the protective wall may also have other shapes.

According to this implementation of the present invention, a plurality of the retaining walls 21 are respectively provided at the outer ends of a plurality of the bracket pages 20 , that is to say, the number of the guard walls matches the number of the bracket pages 20 . A gap 210 is formed between two adjacent retaining walls 21 , and the gap 210 communicates with the microgroove 101 and the outside.

A plurality of the retaining walls 21 are arranged at intervals to form a substantially ring-shaped 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 on the end surface of the bracket leaf 20 . In other words, irritation of the support leaf 20 is mitigated by the retaining wall. The protective walls 21 cover the outside of the bracket leaf 20 in an arc shape, and gaps 210 are formed between adjacent protective walls 21 , so that when liquid can pass through, a protective guide wall tending to the circumference is formed.

In one embodiment of the present invention, the retaining wall 21 extends and protrudes from both sides of the bracket leaf 20, that is, forms a substantially T-shaped structure. In another embodiment of the present invention, the retaining wall 21 One side of the support leaf 20 extends in one direction, that is, the retaining wall and the support leaf 20 form an L-shaped structure, and the present invention is not limited in this respect.

Fig. 10 is a schematic diagram of a microgroove drainage support tube 1 according to a fourth embodiment of the present invention.

In this embodiment of the present invention, the main body 10 has a communication hole 103 , and the communication hole 103 communicates with the guide wire channel 102 of the main body 10 and the microgroove 101 . Further, the main body 10 has a plurality of communication holes 103, which are respectively arranged in the plurality of microgrooves 101 and at different length positions of the main body 10, so as to communicate with the guide wire channel 102 and the Microgroove 101 described above.

Further, the communication holes 103 are arranged in a predetermined array layout, for example, arranged in a single row or in multiple rows longitudinally.

It is worth mentioning that, through the setting of the communication hole 103, the guide wire channel 102 communicates with the microgroove 101, so that when the microgroove drainage stent tube 1 works, the guide wire channel 102 and the The microgroove 101 is in gas and liquid communication, so that the guide wire channel 102 and the microgroove 101 promote each other to keep unblocked. For example, when particles accumulate in one of the microgrooves 101, both the liquid and the gas tend to move in the direction of lower pressure, thereby promoting the liquid or gas to move into the microgroove, so that the aggregated particles leave the microgroove and are further peristaltic delivery.

Referring to Fig. 12A and Fig. 13C, an anti-blocking stent tube 91 with a disappearing film and an anti-blocking stent tube kit 91000 according to a preferred embodiment of the present invention are schematically illustrated.

The anti-blocking stent tube 91 can reduce the occurrence of blockage during use, so as to keep the smooth flow between the kidney and the bladder, and it is worth noting that the anti-blocking stent tube 91 can be inserted into the tube conveniently. The anti-blocking support tube set 91000 includes the anti-blocking support tube 91 and a mounting part 92, wherein the mounting part 92 is suitable for assisting the entry of the anti-blocking support tube 91, and the mounting part 92 can be a guide silk or a core.

In detail, the anti-blocking stent tube 91 includes a stent tube main body 910 and a disappearing film 920 and has at least one groove 930, wherein the groove 930 is formed on one side surface of the stent tube main body 910, so The side surface of the stent tube main body 910 is suitable for contacting the body tissue of a patient, such as the surface of the ureter.

Compared with the original bracket tube, in this embodiment, because the anti-blocking bracket tube 91 is formed with the groove 930, and the groove 930 is suitable for communicating with the outside world at the side of the bracket tube main body 910 , so compared to reducing the cross-sectional area of the anti-blocking bracket tube 91, more space is left for objects to pass through.

The stent tube body 910 includes a tube body 911 , a curved front section 912 and a curved rear section 913 , wherein the curved front section 912 and the curved rear section 913 are respectively disposed at two ends of the tube body 911 . In a natural state, the curved front section 912 and the curved rear section 913 are adapted to be in a curved state, so as to facilitate positioning at both ends of the stent tube main body 910, for example, to position the stent tube at the kidney and the kidney respectively. bladder.

The curved front section 912 and the curved rear section 913 of the stent tube main body 910 can be straightened during the tube feeding process. In this embodiment, the groove 930 integrally extends from the curved front section 912 , the tube body 911 and the curved rear section 913 . It can be understood that the groove 930 can also be formed on the tube body 911 , or formed on the curved front section 912 and the tube body 911 , or the tube body 911 and the curved rear section 913 .

The tube body 911 has a tube body side surface 9111, the curved front section 912 has a curved front section side surface 9121, and the curved rear section 913 has a curved rear section side surface 9131, wherein the curved front section side surface 9121 is from The tube body side surface 9111 of the tube body 911 extends forward, and the curved rear section side surface 9131 extends backward from the tube body side surface 9111 of the tube body 911 . The side surface 9111 of the tube body, the side surface 9121 of the curved front section and the side surface 9131 of the curved rear section are formed on the side surface of the main body 910 of the anti-blocking bracket tube 91 , and the main body 910 of the anti-blocking bracket tube 91 The groove 930 is formed by at least part of the depression on the side surface of the body, and the groove 930 extends in the length direction of the main body 910 of the anti-blocking bracket tube 91, so that foreign matter can move The groove 930 moves between the ureter and the surface of the anti-blocking stent tube 91, and gradually moves from the position of the kidney to the position of the bladder.

The number of the grooves 930 can be multiple, and they are arranged at intervals along the circumferential direction of the main body 910 of the anti-blocking bracket tube 91 . In this embodiment, the number of the grooves 930 is four. According to other embodiments of the present invention, the number of the grooves 930 may be three, five or six.

Further, the bracket tube body 910 of the anti-blocking bracket tube 91 has an installation channel 9100, wherein the installation channel 9100 is formed on the bracket tube body 910 and penetrates through at least part of the bracket tube body 910, so as to When the anti-blocking support tube 91 is installed at the desired position in the human body, the anti-blocking support tube 91 can be installed along the mounting part 92 such as a guide wire, and the installation channel 9100 is provided for the mounting part 92 through. In this embodiment, the installation channel 9100 extends from the curved rear section 913 to the tube body 911 and then extends to the curved front section 912 through.

The bracket tube main body 910 of the anti-blocking bracket tube 91 has at least one inlet 9101 and an outlet 9102, wherein the outlet 9102 is located at a free end of the curved rear section 913, and the inlet 9101 is arranged on the The pipe body 911 or the curved front section 912, the inlet 9101 and the outlet 9102 are respectively communicated with the installation channel 9100, so as to drain the fluid near the inlet 9101 to the installation channel 9100, and then through the An outlet 9102 exits the stent tube body 910 . In this embodiment, the end of the curved front section 912 of the stent tube body 910 is closed, so that the inlet 9101 is closed. Before use, the inlet 9101 can be exposed by puncturing or cutting it short. In other words, the installation channel 9100 of the bracket tube body 910 may be closed. Of course, it can be understood that, referring to FIG. 99 , the installation channel 9100 of the bracket tube body 910 is formed with The position of the inlet 9101 can also be open, and the entire installation channel 9100 can be through.

Further, the stent tube main body 910 of the anti-blocking stent tube 91 includes a strut 914 and at least two separation petals 915, wherein the installation channel 9100 is formed on the strut 914, and the separation petals 915 are set The struts 914 extend outwards at intervals from the circumferential direction of the struts 914 . The groove 930 is formed between two adjacent separation petals 915 .

The outlet 9102 and the inlet 9101 may be respectively formed on the pillar 914 of the stent tube main body 910 . It is worth noting that the installation channel 9100 has two ends, one end is located at the curved front section 912, and the other end is located at the curved rear section 913, and one end located at the curved front section 912 can be closed or open. . For example, the installation passage 9100 can be provided through the bracket pipe main body 910, at this time, both ends of the installation passage 9100 are open, and the installation piece 92 can directly pass through the installation passage 9100, And it goes out from one side of the curved front section 912 , as shown in FIG. 19 . It may also be that, in this embodiment, the installation channel 9100 is closed on one side of the curved front section 912, and when the anti-blocking bracket tube 91 needs to be installed, a part of the curved front section 912 can be cut off. , so that this end of the installation channel 9100 is completely exposed, so that the anti-blocking bracket tube 91 can be directly inserted from the bent rear section 913, pass through the tube body 911, and then protrude from the bent front section 912 .

It is worth noting that the inlet 9101 can be located at the end of the installation channel 9100 , and the installation part 92 can protrude from the inlet 9101 , or can be located at the side of the bracket tube main body 910 . In this embodiment, the installation channel 9100 is closed at the position of the curved front section 912 .

Furthermore, the strut 914 and the partition flap 915 jointly form the curved front section 912 , the tubular body 911 and the curved rear section 913 at various positions. The cross-section of the pillar 914 can be circular, triangular or rectangular, which is only an example here. The separating flap 915 and the pillar 914 can be integrally formed or separately formed. Preferably, the strut 914 of the stent tube main body 910 and the partition flap 915 are integrally formed, and it is worth noting that the stent tube main body 910 has a front end 9103 and a rear end 9104, wherein the The front end 9103 of the stent tube main body 910 is located at the curved front section 912 , and the rear end 9104 is located at the curved rear section 913 . The groove 930 can be designed to integrally extend from the front section of the stent tube body 910 to the rear end 9104 . At this time, for the end surface of the stent tube main body 910 where the tube is inserted, the groove 930 is formed, so it is not a smooth end surface. Preferably, a front end surface 91031 and a rear end surface 91041 respectively corresponding to the front end 9103 and the rear end 9104 of the support pipe main body 910 are smooth end surfaces, so as to facilitate the entry of the anti-blocking support pipe 91 tube and extubation. Optionally, the front end 9103 of the stent tube main body 910 may be designed in a bullet shape, and the rear end 9104 may also be designed in a bullet shape.

The grooves 930 may be uniformly arranged. The included angles between the adjacent separating petals 915 are the same, and the specifications of each of the separating petals 915 can be the same, so that the anti-blocking stent tube 91 at each position when entering the tube The separating flap 915 can be evenly stressed to facilitate tube feeding.

The vanishing film 920 is arranged around the stent tube main body 910 to cover the groove 930 or the separation flap 915, so that the side of the stent tube main body 910 is a smooth arc surface to facilitate the Describe the inlet pipe of the anti-blocking bracket pipe 91. In other words, if the disappearing membrane 920 is not provided, when the anti-blocking stent tube 91 is inserted into the tube, it is the separation valve 915 that is in direct contact with human tissue, although the separation valve 915 has a certain degree of flexibility, But one end of it is connected to the pillar 914, and the other end is a free end and directly bears the pressure from human tissue, so it moves, causing the entire anti-blocking bracket tube 91 to be stressed unevenly, resulting in difficulty in tube insertion. After the disappearing film 920 is provided, on the one hand, each of the dividing petals 915 can be fixed by the disappearing film 920, and on the other hand, the disappearing film 920 can provide a relatively flat and smooth surface for direct contact with human tissue, For easy and smooth tube feeding.

It is worth noting that the surface of the disappearing film 920 does not necessarily need to be very smooth, and a layer of coating can be covered on the surface of the disappearing film 920 so that the entire surface of the anti-blocking stent tube 91 becomes smoother when it is inserted into the tube. Get smooth.

The disappearing film 920 is made of a degradable material with a certain thickness, and disappears naturally after a certain period of time, so that the separating flap 915 and the groove 930 can be directly exposed. The material of the disappearing film 920 is not limited here, it can be made of bioabsorbable aliphatic polyester material, shape memory polyurethane, gel, chitosan and other materials made. Based on different requirements, the material of the vanishing film 920 can be selected to complete degradation within a required time.

The anti-blocking stent tube 91 itself can also be made of degradable materials, but the degradation time of the main body 910 of the anti-blocking stent tube 91 and the disappearing film 920 are not the same, for example, the The degradation time may be 91 days, and the degradation time of the main body 910 of the anti-blocking stent tube 91 may be 91 months.

Further, since the disappearing membrane 920 is arranged around the main body 910 of the anti-blocking stent tube 91, at least one drainage channel 9200 may be formed between the disappearing membrane 920, the separation valve 915 and the pillar 914, and the In this embodiment, the number of the drainage channels 9200 is four. The inlet 9101 can be set on the disappearing membrane 920, so that before the disappearing membrane 920 is completely degraded, the main body 910 of the anti-blocking stent tube 91 can play a certain role inside through the drainage channel 9200. Drainage effect. Of course, it can be understood that the installation channel 9100 can also play a certain drainage role. After the vanishing film 920 disappears, foreign matter such as stones can be discharged along the original position of the drainage channel 9200 .

In other words, the provision of the vanishing film 920 may not affect the drainage function of the anti-blocking stent tube 91 itself.

Referring to FIG. 14 , an anti-blocking stent tube 91 with a disappearing film 920 according to another preferred embodiment of the present invention is schematically shown.

The difference between this embodiment and the above embodiments mainly lies in the setting position of the vanishing film 920 . In the above embodiment, the disappearing film 920 is set in the groove 930 so that the main body 910 of the anti-blocking stent tube 91 is flush with the separation flap 915 at the position of the groove 930, so that The entire surface of the anti-blocking support pipe 91 becomes a gentle arc.

In this embodiment, when the disappearing film 920 is not completely degraded, the installation channel 9100 plays a certain drainage role. When the disappearing film 920 is completely degraded, the installation channel 9100 can play a certain role in drainage, and at the same time, the exposed groove 930 can help to discharge foreign matter.

Referring to Figures 15A, 15B and 15C, the anti-blocking stent tube 91 with the disappearing film 920 according to other preferred embodiments of the present invention is illustrated.

In FIG. 15A , the number of the separation petals 915 of the anti-blocking stent tube 91 is three, and the number of the grooves 930 is three.

In FIG. 15B , the number of the separation petals 915 of the anti-blocking stent tube 91 is five, and the number of the grooves 930 is five.

In accompanying drawing 15C, the number of the said separation petals 915 of the anti-blocking stent tube 91 is six, and the number of the grooves 930 is six.

Optionally, a plurality of the grooves 930 may be uniformly arranged on the main body 910 of the support tube, or non-uniformly arranged on the main body 910 of the support tube. For example, in the anti-blocking support tube 91 The curved front section 912 of the stent tube main body 910, the grooves 930 located on a curved front side and a curved back side of the curved front section 912 can be designed differently, and the exposed curved The groove 930 on the back side can be designed to be wider than the groove 930 on the front side of the bending, so that when the bending front section 912 of the anti-blocking bracket tube 91 bends, The outer groove 930 on the dorsal side of the curve allows fluid to drain more smoothly.

Further, it can be understood that the arrangement of the grooves 930 in the curved back section 913 can also be arranged based on requirements. It is worth noting that the curved back section 913 has a curved positive side and a curved back side, the curved back side of the curved rear section 913 is located outside, the curved positive side is located inside, and the anti-blocking The bending directions of the curved front section 912 and the curved rear section 913 of the stent tube 91 are set to be opposite, so the curved back side of the curved front section 912 and the curved back side of the curved rear section 913 On the same side, the positive bending side of the front bending section 912 and the positive bending side of the rear bending section 913 are located on two sides respectively.

Fig. 16 is a schematic diagram of the anti-blocking stent tube 91 with a disappearing film 920 according to another preferred implementation of the present invention.

The difference between this embodiment and the above embodiments lies in the curved front section 912 of the anti-blocking bracket tube 91 .

In detail, the curved front section 912 has a curved front section end 9122 and a curved front section extension end 9123, the curved front section end 9122 and the curved front section extension end 9123 are arranged oppositely, the curved front section end 9122 is the bracket One end of the tube main body 910 , the curved front extension end 9123 is connected to the tube body 911 .

In this embodiment, a part of the groove 930 is provided on the curved front section 912 , and a part of the groove is provided on the tank body 911 . The number of the grooves 930 in the curved front section 912 is illustrated as five, which are the first groove 930A, the second groove 930B, the third groove 930C, the fourth groove 930D and the fifth groove 930. groove 930E, wherein the first groove 930A, the second groove 930B, the third groove 930C, the fourth groove 930D and the fifth groove 930E are respectively wound along the sequence The stent tube bodies 910 are arranged.

The first groove 930A, the second groove 930B, the third groove 930C, the fourth groove 930D and the fifth groove 930E extend in the curve of the curved front section 912 Between the front end 9122 and the curved front extension 9123 and the inlet 9101 is arranged at the curved front extension 9123 of the curved front 912 . Of course, it can be understood that the first groove 930A to the fifth groove 930E may also extend to the tube body 911 , which is an example here.

The first groove 930A, the second groove 930B, the third groove 930C, the fourth groove 930D and the fifth groove 930E are close to the curve of the curved front section 912 The end of the front end 9122 is set to be flush with the first groove 930A, the second groove 930B, the third groove 930C, the fourth groove 930D and the fifth groove The end of the groove 930E close to the extension end 9123 of the curved front section 912 is arranged in a stepped shape, so as to facilitate the smooth drainage of the fluid when the curved front section 912 is bent.

In detail, the third groove 930C is arranged on the curved back side of the curved front section 912, and the second groove 930B and the fourth groove 930D are arranged on the third groove 930C, the first groove 930A is arranged on one side of the second groove 930B and is located on the positive side of the curve 912, and the fifth groove 930E is arranged on the side of the second groove 930B. One side of the fourth groove 930D and located on the positive side of the curve of the front segment 912 of the curve.

The length of the third groove 930C is set longer than that of the second groove 930B and the fourth groove 930D, and the length of the second groove 930B is set longer than that of the first groove 930A, The length of the fourth groove 930D is set to be longer than that of the fifth groove 930E.

When the curved front section 912 is bent, the third groove 930C is exposed on the side of the curved back side, relative to the first groove 930A, the second groove 930B, the fourth groove The groove 930D and the fifth groove 930E play a major role in drainage. Since the third groove 930C is set longer, the drainage area is longer, which reduces the possibility of clogging.

Further, the number of the inlets 9101 is five, respectively corresponding to the first groove 930A to the fifth groove 930E, wherein the five inlets 9101 are arranged in steps, and the third groove The inlet 9101 corresponding to 930C is closer to the outlet 9102 than the other inlets 9101 . In other words, the length of the third groove 930C is longer than that of the other grooves 930 and is arranged close to the curved rear section 913 . After the vanishing film 920 disappears, the longer third groove 930C leaves a longer accommodation space for foreign objects such as stones, and is not limited to the bending of the curved front section 912 .

It can be understood that the width of the third groove 930C can be set to be larger than that of the first groove 930A, the second groove 930B, the fourth groove 930D and the fifth groove. 930E, to facilitate the passage of foreign bodies such as stones. The depth of the third groove 930C can also be set to be greater than that of the first groove 930A, the second groove 930B, the fourth groove 930D and the fifth groove 930E, so as to facilitate stone formation. Wait for the passage of foreign matter.

It is worth noting that, here is an example, the first trench 930A, the second trench 930B, the third trench 930C, the fourth trench 930D and the fifth trench 930E All can extend to the tube body 911 or the curved rear section 913, and one end of the first groove 930A to the fifth groove 930E close to the rear end 9104 of the bracket tube main body 910 Can be arranged in steps. Of course, it can be understood that the ends of the first groove 930A to the fifth groove 930E that are close to the front end 9103 or the rear end 9104 of the bracket tube body 910 can be flushed. arranged, or coplanar.

Fig. 17 is a schematic diagram of the stent tube with the disappearing film 920 according to another preferred embodiment of the present invention.

The main difference between this embodiment and the above embodiments lies in the arrangement of the grooves 930 . In this embodiment, the groove 930 is disposed on the tube body 911 of the bracket tube main body 910 . When the stent tube is in use, the curved front section 912 is exposed to the kidney, the curved rear section 913 is exposed to the bladder, and the tube body 911 extends between the curved front section 912 and the curved rear section 913 space and is mainly exposed to the ureter.

The tube body 911 has a tube body front end 9112 and a tube body rear end 9113, the tube body front end 9112 and the tube body rear end 9113 are arranged oppositely, and each of the grooves 930 extends on the tube body Between the front end 9112 and the rear end 9113 of the tube body, and the groove 930 is openly arranged on the tube body 911 . When foreign bodies such as stones enter the ureter, they can advance along the tube body 911 to move toward the curved rear section 913 through the accommodation space provided by the groove 930 provided on the tube body 911 .

Preferably, the groove 930 is arranged along the length direction of the tube body 911, and the tube body 911 has a central axis, and the central axis passes through the front end 9112 of the tube body and the rear end 9113 of the tube body , the extending direction of the groove 930 is parallel to the direction of the central axis. Each of the grooves 930 may be arranged parallel to the central axis of the tube body 911 .

It can be understood that, the stent tube body 910 may have a central axis, the central axis passes through the front end 9103 and the rear end 9104 of the stent tube body 910, and the extending direction of the groove 930 may be is parallel to the central axis of the stent tube main body 910 .

Further, in this embodiment, there are multiple inlets 9101, and one groove 930 may correspond to multiple inlets 9101. In detail, in this embodiment, the tubular body 911 includes the struts 914 and the separation petals 915 , and the groove 930 is formed between the adjacent separation petals 915 . The inlet 9101 is formed on the pillar 914 to communicate with the groove 930 .

The installation channel 9100 is formed in the curved front section 912, the pillar 914 of the pipe body 911 and the curved rear section 913, and the inlet 9101 can also be arranged in the curved front section 912 to play a role in drainage. It can also be arranged on the pillar 914 of the tube body 911 to play the role of drainage.

Fig. 18 is a schematic diagram of the stent tube with the disappearing film 920 according to another preferred embodiment of the present invention.

The main difference between this embodiment and the above embodiments lies in the arrangement of the grooves 930 . In this embodiment, the grooves 930 are arranged in sections. For example, the grooves 930 are divided into three columns, and the first column includes five grooves 930, the first groove 930A, the second groove 930B, the third groove 930C, the fourth groove 930D and The fifth groove 930E, wherein the first groove 930A, the second groove 930B, the third groove 930C, the fourth groove 930D and the fifth groove 930E are arranged along the The stent tube main bodies 910 are arranged at intervals along the length direction.

The first groove 930A can be located in the curved front section 912, the second groove 930B, the third groove 930C and the fourth groove 930D can be located in the pipe body 911, and the fifth groove 930B can be located in the pipe body 911. A groove 930E may be located in the curved rear section 913 .

The second groove 930B, the third groove 930C and the fourth groove 930D may be sequentially arranged along the tube front end 9112 to the tube rear end 9113 of the tube body 911 . When a large calculus enters the second groove 930B and is stuck in the second groove 930B in a short time, due to the third groove 930C and the second groove 930B It is difficult for stones to escape from the second groove 930B to enter the third groove 930C, and the third groove 930C can continue to conduct flow. In addition, the grooves 930 in other columns can also continue to drain water.

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 (20)

1. The microgroove drainage stent tube is characterized in that it has at least two microgrooves and a guidewire channel, the microgroove is located outside the guidewire channel and extends in line with the guidewire channel, and the microgroove has An extension opening, the extension opening communicates with the external space, and the microgroove drainage support tube is suitable for being arranged in the ureter of a human body.
2. The microgroove drainage support tube according to claim 1, wherein the microgroove drainage support tube comprises a main body and at least two support pages, the main body forms the guide wire channel, and each of the support pages is approximately along the main body. vertical set.
3. The microgroove drainage stent tube according to claim 1, which has a guiding state and a crimped state, and in the guiding state, the microgroove drainage stent tube is approximately in a straight line state, so as to be placed in the human ureter; In the crimped state, at least one end of the microgroove drainage support tube is crimped.
4. The micro-groove drainage support tube according to claim 2, wherein the micro-groove drainage support tube comprises a curled end, the curled end is integrally connected to the main body, and one of the microgrooves is bent inward from the curled end A channel extends to the main body, and the guide wire channel extends to communicate with the crimped end.
5. The microgroove drainage support tube according to claim 4, wherein one of the microgrooves extends from the outer bend of the curled end to the main body.
6. The micro-groove drainage support tube according to claim 2, wherein the micro-groove drainage support tube comprises two crimped ends, and the two crimped ends are respectively connected to the two ends of the main body in opposite directions, and the guide wire channel extends Connect each of the crimped ends.
7. The microgroove drainage stent tube according to any one of claims 1-6, wherein the main body has a communication hole, and the communication hole communicates the guide wire channel and the microgroove of the main body.
8. The microgroove drainage support tube according to any one of claims 4-6, which comprises a wedge-shaped head, and the wedge-shaped head is arranged at the end of the crimped end.
9. The microgroove drainage support tube according to any one of claims 1-6, comprising a reinforced area, the reinforced area is covered and arranged on a partial area of the extension opening of the microgroove.
10. The microgroove drainage support tube according to claim 1, which has a plurality of microgrooves, which are equally distributed around the guide wire channel, and the number of the microgrooves is selected from 2, 3, 4, 5, and the microgrooves The overall size model of the drainage support tube 1 is F5-F8mm. The microgroove drainage support tube includes two crimped ends, and the two crimped ends are respectively connected to the two ends of the main body in opposite directions, and the guide wire channel is extended and communicated with For each crimped end, the main body has a communication hole, the communication hole communicates with the guide wire channel of the main body and the microgroove, which includes a wedge-shaped head, and the wedge-shaped head is arranged on the crimped The end of the end, which includes a reinforced area, the reinforced area is covered with the partial area of the extension opening of the micro groove, wherein one of the micro grooves extends from the inner bend of the crimped end to the main body , the other microgroove extends from the outer bend of the crimped end to the main body, and has a scale mark, the scale mark is used to indicate the length of the microgroove drainage bracket tube, all the microgrooves The opening size of the extension opening is matched with the setting position of the microgroove, which includes a retaining wall, and the retaining wall is arranged on the end of the bracket page in an arc shape, and between two adjacent retaining walls A gap is formed, and the gap communicates with the microgroove and the external space, and a plurality of the retaining walls are arranged on the exterior of the plurality of support sheets to form a substantially annular outer surface.
11. An anti-blocking stent tube with a disappearing film, suitable for being placed in the body of a person in need, is characterized in that it includes:

    a vanishing film; and

    A stent tube body, wherein the stent tube body has at least one groove and the stent tube body has a side surface, at least part of the side surface is recessed to form the groove, the groove is arranged along Extending along the length direction of the main body of the stent tube, wherein the vanishing film is coated on the side surface of the main body of the stent tube to allow the surface of the anti-blocking stent tube to be a smooth arc surface and the vanishing film The film is configured to disappear after the anti-blocking stent tube is placed in the demander's body for a preset period of time to expose the groove, so as to pass through the anti-blocking stent tube at the position of the anti-blocking stent tube and the demander. Objects in between provide space.
12. The anti-blocking support tube according to claim 11, wherein the anti-blocking support tube has an outlet and at least one inlet, the main body of the bracket tube has a front end, an opposite rear end and an installation channel, wherein the outlet is arranged at the rear end of the bracket tube body, the installation channel extends from the outlet toward the front end of the bracket tube body and the inlet is arranged at the front end of the bracket tube body and the preset position between the outlet and the inlet and the outlet are respectively communicated with the installation channel.
13. The anti-blocking bracket tube according to claim 12, wherein the inlet is arranged at the position of the groove.
14. The anti-blocking stent tube according to claim 11 or 12, wherein the stent tube main body comprises a tube body, a curved front section and a curved rear section, and the curved front section and the curved rear section are respectively arranged on the tube Both ends of the body and suitable for bending.
15. The anti-blocking stent tube according to claim 11 or 12, wherein the stent tube main body comprises a strut and at least two separation petals, wherein the separation petals are arranged to extend outward from the peripheral side of the strut , the grooves are formed on the two separating lobes.
16. The anti-blocking stent tube according to claim 14, wherein the number of the grooves is multiple, and the curved front section has a curved front side and a curved back side, and the curved front side and the curved back side are opposite, and the part of the stent tube body bent toward the positive side of the curve forms the front section of the curve, and the length of the groove arranged on the back side of the curve is set to be longer than that arranged on the curved back side. The length of the trench on the positive side.
17. The anti-blocking bracket tube according to claim 14, wherein the number of the grooves is multiple and arranged at intervals, and each of the grooves is arranged to extend from the curved front section to the pipe body.
18. The anti-blocking bracket pipe according to claim 14, wherein the number of the grooves is multiple and arranged at intervals, and the pipe body has a side surface of the pipe body, and at least part of the side surface of the pipe body is recessed A plurality of the grooves are formed.
19. The anti-blocking stent tube according to claim 11 or 12, wherein the vanishing film is arranged around the main body of the stent tube.
20. The anti-blocking support tube according to claim 11, wherein the anti-blocking support tube has an outlet and at least one inlet, the main body of the bracket tube has a front end, an opposite rear end and an installation channel, wherein the outlet is arranged at the rear end of the bracket tube body, the installation channel extends from the outlet toward the front end of the bracket tube body and the inlet is arranged at the front end of the bracket tube body and the preset position between the outlet and the inlet and the outlet respectively communicate with the installation channel, wherein the number of the grooves is three, four, five or six, and the The curved front section has a curved positive side and a curved back side, the curved positive side and the curved back side are opposite, and the part of the stent tube body bent toward the curved positive side forms the curved front section, which is The length of the groove arranged on the curved back side is set to be greater than the length of the groove arranged on the curved front side, and the installation channel extends from the rear end of the bracket pipe main body to the front end and the installation channel is exposed to the front end, wherein the vanishing film is filled in the groove so that one side surface of the bracket pipe main body is an arc surface, wherein the groove is set To extend from the front end of the stent tube main body to the rear end, or at least two of the grooves are arranged side by side and spaced apart in the length direction of the stent tube main body, or each of the One end of the groove close to the rear end of the stent tube main body is set in a stepped shape, the closer to the curved back side, the closer the groove is set to the rear end of the stent tube main body. end, one of the installation parts is adapted to pass through the main body of the stent tube through the installation channel, so as to guide the anti-blocking stent tube into the tube.

Images