CN115814238A - Microgroove Drainage Stent Tube - Google Patents

Abstract

The invention provides a microgroove drainage stent which is provided with at least two microgrooves and a guide wire channel, wherein the microgrooves are positioned outside the guide wire channel and extend in accordance with the guide wire channel, the microgrooves are provided with extension openings, the extension openings are communicated with the external space, and the microgroove drainage stent is suitable for being arranged in a human ureter.

Description

Microgroove Drainage Stent Tube

technical field

The invention relates to the field of medical supplies, and further relates to a microgroove drainage bracket tube.

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.

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 .

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 pages to form a substantially annular outer surface

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.

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.

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 (10)

1. The microgroove drainage support tube is suitable for being installed in a ureter, and it is characterized in that it has at least two microgrooves and a guide wire channel, and the micro groove is located outside the guide wire channel, and is connected with the guide wire channel consistent extension, the microgroove has an extension opening, and the extension opening communicates with the external space, wherein the microgroove drainage bracket tube includes a main body and at least two bracket pages, the main body forms the guide wire channel, and each The stent pages are formed at intervals outward from the peripheral side of the main body, and the adjacent stent pages form a microgroove, the microgroove drainage stent tube is suitable for being arranged in the human ureter, and the stent pages The end is adapted to contact and support an inner wall of the ureter so that the inner wall of the ureter expands and wriggles, so as to obtain an enlarged dynamic delivery space as the main channel for the microgroove drainage stent tube to transmit urine, wherein the The microgroove drainage support tube has a first crimped end and a second crimped end, the first crimped end and the second crimped end are respectively located at the two ends of the main body and are suitable for reverse crimping, and the microgroove is formed from the The first crimped end extends the second crimped end and the internal flow channel cross-sectional area of the micro-groove portion of the first crimped end is smaller than the internal flow channel cross-sectional area of the micro-groove portion of the second crimped end , the first crimped end is adapted to be arranged on the kidney, the second crimped end is adapted to be arranged on the bladder, the microgroove drainage stent tube further includes a protective wall, and the protective wall is arranged on the outer end of the stent leaf , to prevent the ends of the bracket pages from directly touching the outside. 2. The micro-groove drainage stent tube according to claim 1, which has a guiding state and a crimped state, and in the guiding state, the micro-groove drainage stent tube is approximately in a straight line state, so as to be placed in the ureter of the human body Inside; in the crimped state, the two ends of the microgroove drainage support tube are crimped. 3. The microgroove drainage support tube according to claim 2, wherein the crimped end is integrally connected to the main body, one of the microgrooves extends from the inner bend of the crimped end to the main body, and the guide A silk channel extends to communicate with the crimped end. 4. The microgroove drainage support tube according to claim 2, wherein the microgroove drainage support tube has a plurality of microgrooves, which are equally distributed around the guide wire channel, and the number of the microgrooves is selected from 3,4 , 5. 5. The microgroove drainage stent 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 microgroove drainage stent tube according to claim 1 , comprising a reinforced area, the reinforced area is covered and arranged on a partial area of the extension opening of the microgroove. 7 . 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 with the guide wire channel of the main body and the microgroove. 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 first crimped end. 9. The microgroove drainage support tube according to any one of claims 2-6, comprising a reinforced area, the reinforced area is covered and arranged on a partial area of the extension opening of the microgroove. 10. The micro-groove drainage support tube according to claim 1, wherein the overall size model of the micro-groove drainage support tube is F5-F8mm, and the guide wire channel is extended to communicate with each of the curled ends, and the main body has a A communication hole, the communication hole communicates with the guide wire channel and the microgroove of the main body, wherein the protective wall is arranged on the outer end of the bracket page in an arc shape, and the number of the protective walls is multiple and are respectively arranged at the outer ends of a plurality of the bracket pages, a plurality of the retaining walls are arranged at intervals to form a substantially annular outer surface, and gaps are formed between adjacent retaining walls, wherein the retaining walls extend and protrude from the Both sides of the support leaf form a T-shaped structure, or, the protective wall unidirectionally extends to one side of the support leaf to form an L-shaped structure.

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