CN113318325A

CN113318325A - Anti-blocking nephrostomy tube

Info

Publication number: CN113318325A
Application number: CN202110502083.4A
Authority: CN
Inventors: 程跃; 蒋军辉; 严泽军
Original assignee: Ningbo First Hospital
Current assignee: Jiangsu Beihuan Biological Technology Co ltd
Priority date: 2021-05-08
Filing date: 2021-05-08
Publication date: 2021-08-31

Abstract

The invention provides an anti-blocking nephrostomy tube, which comprises a tube main body, a marking line and a drainage channel, wherein the tube main body comprises a tube front section and a tube rear section, the drainage channel penetrates through the tube rear section and is positioned in the tube rear section, the tube front section has a side surface, at least part of the side surface is concavely formed with the drainage groove, each drainage groove is communicated with the drainage channel, the drainage groove is provided with a drainage starting end and a drainage tail end, the drainage tail end is arranged close to the tube rear section relative to the drainage starting end, and at least one of the drainage starting end and the drainage tail end in the adjacent drainage grooves has a height difference, and the marking line is configured to identify the position for highlighting the tube main body.

Description

Anti-blocking nephrostomy tube

Technical Field

The invention relates to the field of medical instruments, in particular to an anti-blocking nephrostomy tube.

Background

In many current treatment methods, after surgery, in order to assist the patient to recover early, it is necessary to use the fistulation tube 1P for diversion, as shown in fig. 1. For example, in percutaneous nephrolithotomy, the fistula 1P needs to be left for drainage. The fistulation tube 1P plays a role of drainage on one hand, and plays a role of compression hemostasis due to bleeding during or after an operation on the other hand.

The current fistulation tube 1P is generally a hollow tube made of medical rubber, the front end of the tube is provided with a through hole 10P to guide external liquid from the inside of the fistulation tube 1P and to the outside, and the front end of the tube can be also provided with a balloon to play roles of fixing and compression hemostasis.

In actual use, drainage of the ostomy tube 1P depends on a through hole 10P in the body at the front end of the tube and an opening outside the body at the rear end of the tube. It is clear that if the through-hole 10P of the tube front end is clogged, the entire ostomy tube 1P will be disabled. For example, in the case of the bladder stoma tube 1P, if the bladder stoma tube 1P is clogged or pressurized, the pressure in the bladder exceeds a safe pressure or causes hydronephrosis or impairment of the function of the upper urinary tract.

When the fistula 1P is obstructed or clogged, a general solution is to fold the fistula 1P or repeatedly press the fistula 1P to reversely impact the through-hole 10P at the front end of the fistula 1P with the fluid in the fistula 1P. This method, while effective, does not effectively address the blockage problem every time due to the deficiencies of the design of the ostomy tube 1P itself. In actual use, as shown in fig. 1, a large blood clot may wrap the entire head of the ostomy tube 1P, thereby causing drainage of the through-holes 10P.

Disclosure of Invention

It is an object of the present invention to provide an anti-clogging nephrostomy tube which can maintain the flow path as open as possible for continuous flow guidance.

It is another object of the present invention to provide an anti-clogging nephrostomy tube, wherein the anti-clogging nephrostomy tube can provide a plurality of drainage inlets so that after one of the drainage inlets is clogged, the other drainage inlets can continue to drain, and the drainage inlets are not arranged on the same plane, with the possibility that all of the drainage inlets are clogged together.

It is another object of the present invention to provide an anti-clogging nephrostomy tube wherein the anti-clogging nephrostomy tube can provide at least one drainage groove to extend the distance of fluid flow over the surface of the tube to avoid concentrated clogging at the surface location.

It is another object of the present invention to provide an anti-blocking nephrostomy tube, wherein each of the drainage inlets is corresponding to a drainage groove, thereby reducing the probability of blockage at the drainage inlet position.

Another object of the present invention is to provide an anti-clogging nephrostomy tube, wherein the drainage groove can perform a drainage function and a separation function for an easy-clogging object, so that the easy-clogging object can be miniaturized, thereby preventing clogging at the drainage inlet position.

According to one aspect of the present invention, there is provided an anti-clogging nephrostomy tube, wherein the anti-clogging nephrostomy tube comprises a tube body, a marking line and a tube body having at least two drainage grooves and a drainage channel, wherein the tube main body comprises a tube front section and a tube rear section, the drainage channel penetrates through the tube rear section and is positioned inside the tube rear section, the tube front section has a side surface and at least part of the side surface concavely forms the drainage grooves, each of the drainage grooves is communicated with the drainage channel, wherein the drainage groove has a drainage initiation end and a drainage end, the drainage end being arranged close to the tube rear section with respect to the drainage initiation end, and at least one of the drainage starting end and the drainage ending end in the adjacent drainage grooves has a height difference, wherein the marking line is configured to be identifiable to highlight the position of the tube body.

According to one embodiment of the invention, the anterior tube segment of the anti-clogging nephrostomy tube is configured to be bent to form a curved portion, and the drainage groove is arranged at the curved portion and is curved along the curved portion.

According to one embodiment of the present invention, the bending part has a bending front side and a bending back side, the bending front side being a side toward which the tube front section is bent, and at least one of the drainage grooves is disposed at the bending back side of the bending part.

According to one embodiment of the invention, the drainage slots of the longest length are arranged on the curved back side of the curve.

According to one embodiment of the invention, the number of the drainage grooves is three or more, and the drainage end of each drainage groove is arranged in a step shape.

According to one embodiment of the invention, the tube body has a mounting channel adapted for mounting a mounting member to extend through the tube body to allow the tube body to be inserted to a predetermined position.

According to one embodiment of the invention, the nephrostomy tube further comprises a strut and at least two support walls arranged to extend outwardly from the strut to form the drainage channel, the strut and support walls forming at least part of the tube's anterior segment.

According to one embodiment of the invention, the nephrostomy tube further comprises a strut and at least two support walls arranged to extend outwardly from the strut to form the drainage channel, the strut and support walls forming at least part of the tube's anterior segment and the mounting channel extending through the tube's anterior segment.

According to one embodiment of the present invention, the nephrostomy tube further comprises a balloon and a fluid passage, wherein the balloon is disposed at the tube rear section of the tube body and adapted to communicate with the fluid passage to be inflated, and the tube body is provided with a flow-filling interface to communicate with the fluid passage.

According to an embodiment of the present invention, the tube front section of the anti-clogging nephrostomy tube is configured to be bent to form a bent portion, the drainage channels are arranged at the bent portion and bent along the bent portion, wherein the bent portion has a bent front side and a bent back side, the bent front side is a side toward which the tube front section is bent, at least one drainage channel is arranged at the bent back side of the bent portion, wherein the number of the drainage channels is three or more, the drainage end of each drainage channel is arranged in a step shape, wherein the nephrostomy tube further comprises a strut and at least two support walls, the support walls are configured to extend outward from the strut to form the drainage channels, the strut and the support walls form at least a part of the tube front section and the installation channel is made to penetrate the tube front section, wherein the anti-blocking nephrostomy tube further comprises a balloon and a fluid channel, wherein the balloon is disposed at the tube rear section of the tube main body and adapted to communicate with the fluid channel to be inflated, the tube main body is provided with a inflation port to communicate with the fluid channel, wherein the tube front section has a tube front end and an opposite tube front end, the tube rear section has a tube rear end connected to the tube rear end, the drainage end of at least one of the drainage grooves is spaced from the tube front end, wherein the tube main body has a drainage inlet disposed at the tube front end to communicate with the drainage groove and the drainage channel, wherein the drainage inlet is disposed at the tube rear end and in the length direction of the drainage groove, alternatively, the drainage inlet is provided to the strut.

Drawings

Fig. 1 is a schematic view of a current application of a stoma tube.

Fig. 2A is a schematic view of an anti-clogging nephrostomy tube according to a preferred embodiment of the present invention.

Fig. 2B is a schematic cross-sectional view of the anti-blocking nephrostomy tube according to the above preferred embodiment of the present invention.

Fig. 3A and 3B are schematic views of an anti-blocking kit according to a preferred embodiment of the invention.

Fig. 4 is a schematic view of the anti-blocking nephrostomy tube according to another preferred embodiment of the present invention.

Fig. 5 is a schematic application diagram of the anti-blocking kit according to another preferred embodiment of the invention.

Fig. 6 is a partial schematic view of the anti-clogging nephrostomy tube according to another preferred embodiment of the invention.

Fig. 7 is a partial schematic view of the anti-clogging nephrostomy tube according to another preferred embodiment of the invention.

Fig. 8 is a partial schematic view of the anti-clogging nephrostomy tube according to another preferred embodiment of the invention.

Fig. 9 is a partial schematic view of the anti-clogging nephrostomy tube according to another preferred embodiment of the invention.

Fig. 10 is a schematic view of the anti-blocking nephrostomy tube according to another preferred embodiment of the present invention.

Fig. 11 is a schematic diagram for comparing the experiment of the anti-blocking renal fistula and the common fistula according to a preferred embodiment of the invention.

Fig. 12 is a comparative graph showing the experimental effects of the anti-blocking renal fistula and the general fistula according to the above preferred embodiment of the present invention.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be in a particular orientation, constructed and operated in a particular orientation, and thus the above terms are not to be construed as limiting the present invention.

It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.

Referring to fig. 2A to 3B, an anti-clogging nephrostomy tube 1 and an anti-clogging kit 1000 according to a preferred embodiment of the present invention are illustrated.

The anti-blocking kit 1000 may comprise the anti-blocking nephrostomy tube 1 and at least one mounting member 2, the mounting member 2 being adapted to guide the anti-blocking nephrostomy tube 1 into the body. It is of course to be understood that the anti-blocking nephrostomy tube 1 may also be introduced directly in certain application scenarios.

The anti-blocking kidney fistulation tube 1 can reduce the risk of blocking as much as possible during the use process, so that the fluid in the body can be smoothly guided out of the body.

In detail, the anti-blocking nephrostomy tube 1 has at least two drainage inlets 101, a drainage channel 100, a drainage outlet 102 and at least two drainage channels 200, wherein the drainage inlets 101 and the drainage outlet 102 are respectively communicated with the drainage channel 100. The fluid in the body is adapted to enter the drainage channel 100 through the drainage inlet 101 and then leave the body through the drainage outlet 102. It is understood that the fluid may be a liquid, a liquid-solid mixture, etc., and the form of the substance is not particularly limited.

The drainage groove 200 is adapted to be communicated with the drainage inlet 101 to drain the fluid in the body to the drainage inlet 101 position and then to enter the drainage channel 100 through the drainage inlet 101.

The drainage groove 200 has a certain length, and can be designed according to specific requirements based on the difference of the whole size of the fistulization tube, for example, 1-5 cm.

The anti-blocking nephrostomy tube 1 comprises a tube main body 10, wherein the tube main body 10 has a front end 103 and a rear end 104, and the front end 103 and the rear end 104 are two ends of the tube main body 10 respectively. The drainage inlet 101 and the drainage outlet 102 are formed in the pipe body 10 and the drainage outlet 102 is located at the rear end 104 of the pipe body 10.

Further, the tube body 10 comprises a front tube section 11 and a rear tube section 12, wherein the front tube section 11 is connected to the rear tube section 12, the drainage outlet 102 is located at the rear tube section 12 of the tube body 10, the drainage channel 100 is located at the rear tube section 12 of the tube body 10, and the drainage groove 200 is located at the front tube section 11 of the tube body 10. When the anti-blocking nephrostomy tube 1 is in use, the tube front section 11 is suitable for firstly extending into the body, and the drainage groove 200 arranged on the tube front section 11 is suitable for guiding the fluid in the body outwards to the drainage inlet 101 position and then further guiding the fluid outwards through the drainage channel 100.

In detail, the tube front section 11 has a tube front section head end 111 and a tube front section tail end 112, wherein the tube front section head end 111 is the front end 103 of the tube main body 10, and the tube rear section 12 has a tube rear section head end 121 and a tube rear section tail end 122, wherein the tube rear section tail end 122 is the rear end 104 of the tube main body 10, and wherein the tube front section tail end 112 of the tube front section 11 is connected to the tube rear section head end 121.

The drainage groove 200 extends between the tube front end 111 and the tube front end 112, the drainage groove 200 may extend from the tube front end 112 directly toward the tube front end 111, or may neither end of the drainage groove 200 contact the tube front end 111 nor the tube front end 112. In other words, the end of the drainage groove 200 may be located at the head end 111 of the tube front section, may be located at the tail end 112 of the tube front section, or may be located between the head end 111 of the tube front section and the tail end 112 of the tube front section.

Further, the tube body 10 has a side surface 105, the side surface 105 of the front tube section 11 of the tube body 10 is recessed inward to form the drainage grooves 200, and the drainage grooves 200 are directly communicated with the outside. The drainage grooves 200 extend along the length of the tube body 10 to drain fluid forward to the drainage inlet 101 location.

It is understood that it is not necessary that one drainage inlet 101 corresponds to one drainage groove 200, that one drainage inlet 101 corresponds to two or more drainage grooves 200, and that one drainage groove 200 corresponds to two or more drainage grooves 200.

In this embodiment, the number of the drainage inlets 101 is four, and the number of the drainage grooves 200 is four. It will be appreciated that the number of drainage inlets 101 can be two, three, five, six or more, and the number of drainage slots 200 can be two, three, five, six or more. The anti-blocking nephrostomy tube 1 comprises a strut 20 and at least two support walls 30, the strut 20 and the support walls 30 may form at least part of the tube front section 11, wherein the support walls 30 extend outwardly from the strut 20, and the drainage groove 200 is formed between adjacent support walls 30. The cross section of one of the supporting walls 30 may be "L" shaped and "T" shaped, in this embodiment the outer surface of the supporting wall 30 is implemented as a curved surface to reduce the possibility of injury to human tissue.

In this embodiment, the number of the support walls 30 is four, and the support walls are spaced apart to form the drainage grooves 200.

The drainage inlet 101 is communicated with the drainage groove 200, and by arranging a plurality of drainage inlets 101 and drainage grooves 200, fluid needs to pass through the drainage groove 200 before entering the drainage inlet 101. If a large foreign object needs to enter the drainage inlet 101, it may be separated into smaller objects by the support walls 30 forming the drainage groove 200 before entering, to avoid clogging at the drainage inlet 101. In addition, if a larger foreign body really blocks the drainage inlets 101, since the number of the drainage inlets 101 is multiple and the adjacent drainage inlets 101 are separated by the supporting wall 30, after one drainage inlet 101 is blocked, the other drainage inlet 101 can still maintain normal drainage, so that the whole anti-blocking renal fistula 1 can still work normally.

Further, in the present embodiment, the drainage inlet 101 is disposed at an end position of the drainage groove 200 and is located in a length direction of the drainage groove 200. In detail, the fluid drained along the drainage groove 200 can be drained to the drainage inlet 101 while maintaining the original transport direction. If the foreign matter is large, it can be separated by the support wall 30 during the movement along the drainage groove 200, and if the foreign matter is small, it can be transferred along the drainage groove 200 and then directly transferred to the drainage inlet 101 to enter the drainage channel 100. Fluid can also be drawn into the drainage inlet 101 directly from the outside.

In more detail, in this embodiment, the tube rear section 12 is formed with an opening 1210 at the tube rear section head end 121, and the peripheral edge of a surrounding wall of the tube rear section 12 forming the opening 1210 may be non-planar or coplanar. The struts 20 and the support walls 30 of the tube front section 11 divide the openings 1210 into a plurality of the drainage inlets 101 at the tube rear section head end 121 to reduce the likelihood of the openings 1210 being completely blocked. Each of the support walls 30 may be connected at one end to the strut 20 and at the other end may extend to the inner wall of the tube rear section 12. It is understood that a plurality of the drainage inlets 101 may be disposed at the same height, or may be disposed at different height positions. In this embodiment, at least one of the drainage inlets 101 is arranged directly at the location of the opening 1210 of the tube rear end 121, and at least one of the drainage inlets 101 is arranged above the location of the opening 1210 of the tube rear end 121, so that foreign matter, after entering the drainage inlet 101, continues to pass a narrow distance before reaching the opening 1210 of the tube rear end 121 and thus enters the larger drainage channel 100.

It will be appreciated that according to another embodiment of the present invention, as shown in FIG. 10, the drainage inlet 101 may not be provided at the end of the drainage groove 200, but may be provided at a predetermined position of the support pillar 20 or the support wall 30 exposed to the drainage groove 200. In other words, the drainage channel 100 may extend from the drainage outlet 102 along the rear tube section 12 to the rear tube section 12, or to the front tube section 11.

Further, the drainage groove 200 has a drainage start end 201 and a drainage end 202, the drainage start end 201 is disposed close to the tube front section head end 111 of the tube front section 11, and the drainage end 202 is disposed close to the tube front section tail end 112 of the tube front section 11. It is understood that the drainage initiation end 201 may be disposed at the tube front section head end 111, or may be kept a predetermined distance from the tube front section head end 111, so that the tube front section 11 keeps a smooth surface at the tube front section head end 111 to facilitate tube feeding.

In this embodiment, the distance from the drainage end 202 of at least one of the drainage channels 200 to the anterior-posterior end 112 is greater than the distance from the drainage end 202 of the other drainage channel 200 to the anterior-posterior end 112. Similarly, at least a portion of at least one of the drainage channels 200 adjacent the trailing end 112 of the leading tube segment is closed such that the location of fluid entry into the drainage channel 100 through the drainage inlet 101 is different for the drainage channel 200 than for the other drainage channels 200.

In detail, the four drainage slots 200 are referred to as a first drainage slot 200A, a second drainage slot 200B, a third drainage slot 200C and a fourth drainage slot 200D, respectively, wherein the distance from the drainage end 202 of the first drainage slot 200A to the anterior segment end 112 is x, and the drainage ends 202 of the second drainage slot 200B, the third drainage slot 200C and the fourth drainage slot 200D are disposed at the anterior segment end 112. When a larger foreign object moves to the drainage end 202 of the first drainage groove 200A, the first drainage groove 200A may become blocked. While the drainage ends 202 of the second, third and

fourth drainage channels

200B, 200C, 200D, which are located beside and below the drainage end 202 of the first drainage channel 200A, are less likely to be simultaneously blocked, so that the anti-blocking nephrostomy tube 1 remains as open as possible.

For the anti-blocking nephrostomy tube 1, if a blood clot moves towards the tube front end tail end 112 along the outer wall of the tube front section 11, when passing through the drainage end 202 of the first drainage groove 200A, at least part of the blood clot is sucked at the drainage end 202 of the first drainage groove 200A due to the corresponding suction force of the drainage inlet 101, and is difficult to continue to advance to block the drainage end 202 of the other second drainage groove 200B, the third drainage groove 200C and the fourth drainage groove 200D. In this way, the occurrence of a phenomenon that the anti-blocking renal fistula 1 is completely blocked and thus cannot normally conduct flow can be significantly reduced. In addition, in the embodiment, the front tube section 11 of the anti-blocking nephrostomy tube 1 is set to be vertical in a natural state, and the length of the front tube section 11 can be designed to be shorter so as to avoid irritation to internal tissues.

Further, the anti-clogging nephrostomy tube 1 comprises a balloon 40 and a fluid passage 300, wherein the balloon 40 is disposed on the tube body 10 and preferably below the drainage inlet 101 to avoid affecting the drainage of fluid.

In this embodiment, the balloon 40 is disposed on the rear tube section 12 and is adapted to be communicated with the fluid channel 300, the fluid channel 300 extends along the rear tube section 12 to connect to an inflation port 301, wherein the inflation port 301 is disposed at the rear tube section end 122 of the rear tube section 12. Fluid may be inflated from the fluid channel 300 to the bladder 40 via the inflation port 301.

Further, the anti-blocking nephrostomy tube 1 has an installation channel 400, the installation channel 400 extends from the tube rear section tail end 122 of the tube rear section 12 to the tube front section head end 111 of the tube front section 11, and the installation channel 400 is communicated with the drainage outlet 102. The mounting channel 400 is adapted to allow one of the mounting members 2 to pass through, and the mounting member 2 may be a guide wire, and the anti-blocking nephrostomy tube 1 is passed through by the mounting member 2, so that the anti-blocking nephrostomy tube 1 can be guided to a predetermined position in the body along the mounting member 2. In this embodiment, the installation channel 400 is closed at the position of the front end 111 of the tube front section, when the anti-blocking renal fistula 1 needs to be inserted into the installation member 2, the front end 111 of the tube front section is opened 1210 or the front end 111 of the tube front section is cut off to expose the installation channel 400, and then the anti-blocking renal fistula 1 is inserted to a desired position along the installation member 2.

At least part of the installation channel 400 and the drainage channel 100 may coincide, for example, the installation channel 400 may be arranged to coincide with the drainage channel 100 at the location of the tube rear section 12. It will be appreciated that the mounting channel 400 may also serve as a drain when the mounting member 2 is not mounted to the mounting channel 400.

Further, the anti-clogging nephrostomy tube 1 includes a marking line 90, wherein the marking line 90 is provided to the tube body 10 so that the tube body 10 can be recognized at the time of tube insertion to determine the tube insertion position. For example, the marking line 90 may be embedded in at least a portion of the tube body 10, and visible under X-ray irradiation. Preferably, the marking line 90 extends from one end of the tube body 10 to the other end of the tube body 10. It will be appreciated that the marking line 90 may not be a continuous line, as long as the approximate position of the tube body 10 is visible under X-ray or other particular circumstances.

Further, in a comparative experiment of the ordinary fistulization tube a and the anti-blocking nephrostomy tube B in this example, the diameters of the two tubes were the same.

The experimental steps are as follows:

the common fistulation tube A and the anti-blocking renal fistulation tube B are respectively inserted into a 350ml mineral water bottle, and the relative postures of the mineral water bottle and the common fistulation tube A and the anti-blocking renal fistulation tube B are adjusted to ensure that the common fistulation tube A and the anti-blocking renal fistulation tube B can smoothly conduct flow after most of water is filled in the bottle. The mineral water bottle is inserted with a syringe needle as an air vent, and the mineral water bottle mouth is provided with rubber gloves to maintain the sealability after the insertion of the general fistulae a or the anti-blocking nephrostomy tube B. The amount of water in the two bottles is the same.

The experimental result shows that: the drainage of the ordinary fistulization tube A needs 34 seconds; the anti-blocking nephrostomy tube B in the embodiment takes 35 seconds for drainage to be completed.

Secondly, the difference from the steps is that the fluid in the mineral water bottle is added with 50ml of blood into 50ml of normal saline to obtain mixed fluid, the mixed fluid is placed into the mineral water bottle and stands for 15 minutes, and a drainage experiment is started after blood clots are formed.

Referring to fig. 11 and 12, the experimental results show that: the common fistulization tube A can not complete drainage, blood clots are blocked, and no fluid flows out; the anti-blocking nephrostomy tube B in this embodiment takes 38 seconds to drain.

And thirdly, adding 20ml of blood into 80ml of common physiological saline to obtain mixed fluid, placing the mixed fluid into the mineral water bottle, standing for 15 minutes, and starting a drainage experiment after blood clots are formed.

The experimental result shows that: the drainage of the common fistulization tube A needs 10min, and the flow is very small in the middle time period; the anti-blocking nephrostomy tube B in this embodiment takes 28 seconds to drain. In conclusion, the present example provides an anti-clogging renal fistula B that reduces the chance of clogging relative to fistula a.

Referring to fig. 4 and 5, the anti-clogging nephrostomy tube 1 and the anti-clogging kit 1000 according to another preferred embodiment of the present invention are illustrated.

The main difference between this embodiment and the above-described embodiments is the tube body 10 of the anti-clogging nephrostomy tube 1.

In the present embodiment, the tube main body 10 is formed with a bending portion 50, and in detail, the tube front section 11 of the tube main body 10 is bent from the tube front section head end 111 to form the bending portion 50, so as to reduce the stimulation to the human body or the animal body caused by the anti-blocking nephrostomy tube 1 after being accommodated in the body.

The tube front section 11 of the tube main body 10 of the anti-blocking nephrostomy tube 1 is bent around the tube front section head end 111 to form the bent portion 50. The drainage slots 200 follow the curvature of the tube front section 11 to make the flow path of the fluid a curve.

In this process, the support walls 30 and struts 20 forming the drainage channels 200 are also curved to facilitate separation of larger blood clots into smaller blood clots. The curved anterior tube segment 11 is advantageous in separating larger clots from smaller clots, as compared to the vertical anterior tube segment 11 of the previous embodiment.

Further, in this embodiment, the number of the drainage grooves 200 is four, and the curved portion 50 has a curved front side 51 and a curved back side 52, wherein the curved front side 51 is the side toward which the tube front section 11 is curved, and the curved back side 52 and the curved front side 51 are oppositely disposed.

Drainage groove 200 is first drainage groove 200A, second drainage groove 200B, third drainage groove 200C and fourth drainage groove 200D respectively, first drainage groove 200A second drainage groove 200B third drainage groove 200C and fourth drainage groove 200D are wound tub anterior segment 11 pillar 20 encircles in proper order and arranges. The second drainage slot 200B is disposed on the curved back side 52 of the curved portion 50, the fourth drainage slot 200D is disposed on the curved front side 51 of the curved portion 50, and the first and

third drainage slots

200A and 200C are oppositely disposed and located between the second and

fourth drainage slots

200B and 200D.

Further, the drainage ends 202 of the first, second, third and

fourth drainage slots

200A, 200B, 200C, 200D are arranged in a step-like fashion. In detail, the drainage end 202 of the second drainage slot 200B is disposed closer to the drainage outlet 102 than the first, third and

fourth drainage slots

200A, 200C, 200D. The drainage ends 202 of the first and

third drainage slots

200A, 200C are disposed closer to the drainage outlet 102 than the fourth drainage slot 200D. That is, the drainage end 202 of the fourth drainage groove 200D on the curved obverse side 51 of the curved portion 50 is disposed farthest from the drainage outlet 102.

With a location below the drainage slot 200 as a reference point, the distance from the drainage end 202 of the second drainage slot 200B to this reference point is L1, the distance from the drainage end 202 of the first and

third drainage slots

200A and 200C to this reference point is L2, the distance from the drainage end 202 of the fourth drainage slot 200D to this reference point is L3, and L1 is less than L2 and less than L3. In addition, the length of the second drainage slot 200B is set to be greater than the first, third and

fourth drainage slots

200A, 200C, 200D. The drainage starting ends 201 of the first, second, third and

fourth drainage slots

200A, 200B, 200C and 200D are disposed to be coplanar. When the front tube segment 11 of the anti-blocking nephrostomy tube 1 is naturally bent to form the bent portion 50 and placed in the body, the second drainage groove 200B is directly exposed and the majority of the fourth drainage groove 200D is hidden inside. First drainage groove 200A with third drainage groove 200C is located respectively second drainage groove 200B with between the fourth drainage groove 200D, plays the drainage effect respectively. Of the four drainage slots 200, the second drainage slot 200B is adapted to provide the primary drainage function.

In addition, because the first drainage groove 200A, the second drainage groove 200B, the third drainage groove 200C and the fourth drainage groove 200D correspond the drainage inlet 101 is located drainage end 202 position, because drainage end 202 highly position differentiation arranges, makes drainage inlet 101 also differentiation arranges to the foreign matter is difficult to simultaneously four drainage inlets 101 is stopped up at once, often one of them drainage inlet 101 is stopped up, and other drainage inlet 101 can also keep normal drainage, and then the anti-blocking ability of preventing blocking up nephrostomy tube 1 can be strengthened.

It is to be understood that the differentiated arrangement of the drainage ends 202 of the first, second, third and

fourth drainage channels

200A, 200B, 200C and 200D herein is illustrative and that the anti-clogging renal fistula tract 1 of the invention is not so limited.

Referring to fig. 6, the anti-clogging nephrostomy tube 1 according to another preferred embodiment of the present invention is illustrated.

In this embodiment, the front end 111 of the front tube section 11 of the tube main body 10 of the anti-blocking nephrostomy tube 1 is penetrated by the rear end 122 of the rear tube section to form at least part of the installation channel 400.

The installation channel 400 can be seen directly, viewed at the location of the tube front section head end 111. In other words, the installation channel 400 is directly exposed at the tube forward section head end 111. In using the anti-clogging nephrostomy tube 1, the anti-clogging nephrostomy tube 1 may be directly inserted into the body along the mounting member 2. The anti-blocking nephrostomy tube 1 is inserted to a preset position along the mounting member 2, and after the mounting member 2 is withdrawn, the anti-blocking nephrostomy tube 1 is automatically bent at the position of the tube front section 11 to form the bent portion 50.

When the anti-blocking renal fistula catheter 1 needs to be pulled out of the body, the mounting member 2 may be inserted along the mounting channel 400 such that the curved anterior tube segment 11 is expanded linearly along the mounting member 2, and then the anti-blocking renal fistula catheter 1 may be taken out of the body to avoid excessive irritation to the wound during pulling out of the curved anterior tube segment 11.

In addition, the first, second, and

third drainage slots

200A, 200B, 200C may extend to the tube front end 111.

Referring to fig. 7, the anti-clogging nephrostomy tube 1 according to another preferred embodiment of the present invention is illustrated.

In this embodiment, the number of drainage slots 200 is four, namely first, second, third and

fourth drainage slots

200A, 200B, 200C and 200D. The first, second, third and

fourth drainage slots

200A, 200B, 200C, 200D are arranged in sequence along the support column 20, respectively.

A predetermined position between the tube forward section head end 111 and the tube forward section tail end 112 of the tube forward section 11 to the tube forward section head end 111 is configured to be naturally bendable to form the bend 50. In detail, at least part of the tube front section 11 can be bent around the tube front section head end 111 as a center, similar to a pigtail.

The drainage starting ends 201 of the first drainage groove 200A, the second drainage groove 200B, the third drainage groove 200C and the fourth drainage groove 200D are arranged in a stepped manner, wherein the distance from the drainage starting end 201 of the first drainage groove 200A to the tube front section head end 111 is x, the distance from the drainage starting end 201 of the second drainage groove 200B to the tube front section head end 111 is x1, the distance from the drainage starting end 201 of the third drainage groove 200C to the tube front section head end 111 is x2, the distance from the drainage starting end 201 of the fourth drainage groove 200D to the tube front section head end 111 is x3, and x is less than x1 and less than x2 and less than x 3. The drainage ends 202 of the first, second, third and

fourth drainage slots

200A, 200B, 200C, 200D are arranged to lie in the same plane.

Due to the stepped arrangement of the drainage starting ends 201 of the first drainage groove 200A to the fourth drainage groove 200D, the probability that the first drainage groove 200A to the fourth drainage groove 200D are simultaneously blocked is reduced, so that the anti-blocking renal fistula 1 is kept as open as possible. In addition, when the bent portion 50 is formed, the longer fourth drainage groove 200D is disposed at an outer position of the bent portion 50 to facilitate prevention of the entire anti-blocking nephrostomy tube 1 from being blocked.

Referring to fig. 8, the anti-clogging nephrostomy tube 1 according to another preferred embodiment of the present invention is illustrated.

This embodiment differs from the previous embodiments in the placement of the drainage slots 200. In this embodiment, the drainage grooves 200 are arranged in an alternate length.

Four of the drainage grooves 200 are arranged at intervals on the peripheral side of the tube front section 11, and the four drainage grooves 200 are arranged in a staggered manner.

It should be noted that in this embodiment, four drainage grooves 200 correspond to a single drainage inlet 101, and in fact, two or more drainage grooves 200 may correspond to a same drainage inlet 101. The same drainage groove 200 may also be bifurcated at the trailing end of the drainage groove 200 to correspond to different drainage inlets 101.

Referring to fig. 9, the anti-clogging nephrostomy tube 1 according to another preferred embodiment of the present invention is illustrated.

In this embodiment, the drainage groove 200 is located on the tube front section 11 and extends between the tube front section head end 111 and the tube front section tail end 112, and is configured to extend from the tube front section tail end 112 to the tube front section head end 111 in a curved manner.

The support wall 30 forming the drainage groove 200 is provided to be inclined, and when a blood clot or the like adheres to the position of the drainage groove 200 of the anti-clogging nephrostomy tube 1, it is possible to divide the blood clot into smaller shapes more easily in some cases by the inclined arrangement of the drainage groove 200.

It will be appreciated that the number of drainage slots 200 can be one, two, three, four or more. When the number of the drainage grooves 200 is one, the drainage grooves 200 can be arranged to extend spirally on the front tube section 11, although the distance of flow on the surface of the anti-blocking nephrostomy tube 1 is increased for fluid, but the probability of blockage is also reduced.

It will be appreciated by persons skilled in the art that the embodiments of the invention described above and shown in the drawings are given by way of example only and are not limiting of the invention. The objects of the invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the examples, and any variations or modifications of the embodiments of the present invention may be made without departing from the principles.

Claims

1. An anti-blocking nephrostomy tube is characterized by comprising a tube main body, a marking line, at least two drainage grooves and a drainage channel, wherein the tube main body comprises a tube front section and a tube rear section, the drainage channel penetrates through the tube rear section and is positioned inside the tube rear section, the tube front section has a side surface and at least part of the side surface concavely forms the drainage grooves, each of the drainage grooves is communicated with the drainage channel, wherein the drainage groove has a drainage initiation end and a drainage end, the drainage end being arranged close to the tube rear section with respect to the drainage initiation end, and at least one of the drainage starting end and the drainage ending end in the adjacent drainage grooves has a height difference, wherein the marking line is configured to be identifiable to highlight the position of the tube body.

2. The anti-clogging nephrostomy tube of claim 1 wherein the anterior tube segment of the anti-clogging nephrostomy tube is configured to be bent to form a bend, the drainage groove being disposed at and bent along the bend.

3. An anti-clogging nephrostomy tube as set forth in claim 2, wherein said curved portion has a curved obverse side and a curved reverse side, said curved obverse side being the side toward which said anterior tube is curved, at least one of said drainage grooves being disposed on said curved reverse side of said curved portion.

4. An anti-clogging nephrostomy tube according to claim 3, wherein the drainage groove of the longest length is arranged on the curved dorsal side of the curve.

5. The anti-clogging nephrostomy tube of claim 1 wherein the number of drainage slots is three or more, the drainage ends of each of the drainage slots being arranged in a step.

6. The anti-clogging nephrostomy tube of claim 1 wherein the tube body has a mounting passage adapted for mounting a mounting member therethrough to allow insertion of the tube body to a preset position.

7. The anti-clogging kidney fistula of claim 1, further comprising a strut and at least two support walls, the support walls being configured to extend outwardly from the strut to form the drainage groove, the strut and support walls forming at least part of the anterior segment of the tube.

8. The anti-clogging nephrostomy tube of claim 6 further comprising a strut and at least two support walls, said support walls being arranged to extend outwardly from said strut to form said drainage slots, said strut and said support walls forming at least part of said tube anterior segment and said mounting channel extending through said tube anterior segment.

9. The anti-clogging nephrostomy tube of claim 1 further comprising a balloon and having a fluid passage, wherein said balloon is disposed on said tube posterior section of said tube body and adapted to communicate with said fluid passage to be inflated, said tube body being provided with a inflation port to communicate with said fluid passage.

10. The anti-clogging nephrostomy tube of claim 1 wherein the tube anterior section of the anti-clogging nephrostomy tube is configured to be bent to form a curved portion, the drainage slots are arranged at the curved portion and are curved along the curved portion, wherein the curved portion has a curved obverse side which is a side toward which the tube anterior section is curved and a curved reverse side, at least one drainage slot is arranged at the curved reverse side of the curved portion, wherein the number of drainage slots is three or more, the drainage end of each drainage slot is arranged in a step-like manner, wherein the anti-clogging nephrostomy tube further comprises a strut and at least two support walls, the support walls are configured to extend outward from the strut to form the drainage slot, the strut and the support walls form at least a part of the tube anterior section and the installation channel penetrates the tube anterior section, wherein the anti-blocking nephrostomy tube further comprises a balloon and a fluid channel, wherein the balloon is disposed at the tube rear section of the tube main body and adapted to communicate with the fluid channel to be inflated, the tube main body is provided with a inflation port to communicate with the fluid channel, wherein the tube front section has a tube front end and an opposite tube front end, the tube rear section has a tube rear end connected to the tube rear end, the drainage end of at least one of the drainage grooves is spaced from the tube front end, wherein the tube main body has a drainage inlet disposed at the tube front end to communicate with the drainage groove and the drainage channel, wherein the drainage inlet is disposed at the tube rear end and in the length direction of the drainage groove, alternatively, the drainage inlet is provided to the strut.