CN113082472A

CN113082472A - Drainage nephrostomy tube

Info

Publication number: CN113082472A
Application number: CN202110501188.8A
Authority: CN
Inventors: 严泽军; 程跃; 蒋军辉
Original assignee: Ningbo First Hospital
Current assignee: Ningbo First Hospital
Priority date: 2021-05-08
Filing date: 2021-05-08
Publication date: 2021-07-09

Abstract

The present invention provides a draining nephrostomy tube comprising a tube body, a marking thread and a catheter having at least two drainage inlets, a drainage outlet, a drainage channel and at least two drainage grooves, wherein one of the drainage grooves communicates with one of the drainage inlets and the drainage inlet and the drainage outlet are respectively located at both ends of the drainage channel and communicate with the drainage channel, wherein the tube body comprises a tube front portion and a tube rear portion, the drainage channel is penetratingly formed at the tube rear portion, the tube front portion has a side surface and at least a portion of the side surface concavely forms the drainage groove, the drainage groove is provided at the drainage inlet extending toward the front end of the tube body, wherein the marking thread is configured to be identifiable to highlight a position of the tube body.

Description

Drainage nephrostomy tube

Technical Field

The invention relates to the field of medical appliances, in particular to a drainage nephrostomy tube.

Background

In many current treatment approaches, the stoma tube is used for drainage after surgery in order to assist the patient in early recovery. For example, in percutaneous nephrolithotomy, an indwelling fistulization tube is needed for drainage. The fistulation tube plays a role in drainage on one hand and plays a role in compression hemostasis due to bleeding during or after an operation on the other hand.

The current fistulization pipe is generally a hollow pipe supported by medical rubber, the front end of the pipe is provided with a through hole to guide external liquid from the inside of the fistulization pipe and guide the liquid to the outside, and the front end of the pipe can be also provided with an air bag to play roles of fixing and compressing hemostasis.

In actual use, drainage of the ostomy tube relies on a through-hole 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 at the front end of the tube becomes blocked, the entire ostomy tube will be rendered ineffective. For example, in the case of a bladder stoma, if the bladder stoma is blocked or pressurized, the pressure in the bladder exceeds the safe pressure or causes hydronephrosis or impaired function of the upper urinary tract.

When the fistula has poor flow guidance or blockage, the common solution is to fold the fistula or repeatedly press the fistula to reversely impact the through hole at the front end of the fistula with the fluid in the fistula. Although this method has some effect, the problem of clogging cannot be effectively solved every time due to the defects of the design of the fistulation tube. In actual use, as shown in fig. 1, a large blood clot may wrap the entire head of the ostomy tube, thereby causing drainage through the through-holes.

Disclosure of Invention

An object of the present invention is to provide a draining kidney stoma tube, wherein the stoma tube can drain while reducing the occurrence of clogging problems as much as possible to smoothly drain.

Another object of the present invention is to provide a draining renal fistula in which one end of the fistula is used to drain the fluid in the body into the fistula and the other end of the fistula is used to drain the fluid in the fistula to the outside of the body, wherein the body portion of the fistula located in the body is designed so that the fluid in the body can be drained smoothly.

It is another object of the present invention to provide a draining renal fistula tube, wherein the fistula tube is capable of providing multiple sites in the body for draining fluid from the body to the outside of the body, and when one site fails to drain normally, the other sites can drain normally, so as to reduce the chance of blockage.

It is another object of the present invention to provide a draining nephrostomy tube, wherein the tube has a plurality of drainage inlets and a drainage outlet, wherein each of the drainage inlets and the drainage outlet are in communication, and adjacent drainage inlets do not interfere with each other.

It is another object of the present invention to provide a draining nephrostomy tube, wherein the tube has a plurality of drainage grooves, wherein the grooves are formed at intervals on the surface of the tube and are adapted to communicate with the drainage inlet.

It is another object of the present invention to provide a drainage nephrostomy tube in which the drainage channel can reduce the chance of congestion at the drainage inlet site by dividing the congestion.

It is another object of the present invention to provide a draining nephrostomy tube wherein the tube enables the miniaturization of large clots while delivering miniaturized clots to the exterior of the body to reduce the chance of blockage of the tube.

According to an aspect of the present invention, there is provided a draining nephrostomy tube, wherein the draining nephrostomy tube comprises a tube body, a marking thread and a tube body having at least two drainage inlets, a drainage outlet, a drainage channel and at least two drainage grooves, wherein one of the drainage grooves communicates with one of the drainage inlets and the drainage inlet and the drainage outlet are respectively located at both ends of the drainage channel and communicate with the drainage channel, wherein the tube body comprises a tube front portion and a tube rear portion, the drainage channel is penetratingly formed at the tube rear portion, the tube front portion has a side surface and at least a part of the side surface concavely forms the drainage groove, wherein the tube body has a front end and an opposite rear end, the drainage outlet is located at the rear end, and the drainage groove is located at the drainage inlet extending toward the front end of the tube body, wherein the marking line is configured to be identifiable to highlight a location of the tube body.

According to one embodiment of the invention, the pipe front comprises at least two partition walls and a pipe string, wherein the partition walls are arranged at intervals in the pipe string and extend outwards along the pipe string, and each drainage groove is formed between two adjacent partition walls.

According to one embodiment of the invention, the tube rear portion comprises a tube enclosure wall which surrounds the drainage channel and forms the drainage outlet at one end and the drainage inlet at the other end of the tube enclosure wall.

According to one embodiment of the invention, the tube rear part comprises a tube wall, wherein the tube wall surrounds the drainage channel and forms the drainage opening at one end, and at least two drainage inlets at the other end and the partition wall, the tube stub, which drainage inlets are located in the direction of extension of the drainage groove.

According to one embodiment of the invention, the number of drainage slots is more than three and each of the drainage inlets corresponding to the drainage slot is arranged in a step-like manner such that the distance from one of the drainage inlets to the front end of the tube body is less than the distance from the other drainage inlet to the front end of the tube body.

According to one embodiment of the present invention, the number of the drainage grooves is more than three and one end of each of the drainage grooves adjacent to the front end of the tube body is arranged in a stepped manner such that the distance from one end of one of the drainage grooves adjacent to the front end of the tube body to the front end is smaller than the distance from one end of the other drainage groove adjacent to the front end of the tube body to the front end.

According to one embodiment of the invention, each of the drainage slots is arranged end-flush with the tube body.

According to one embodiment of the invention, the drainage groove is provided to extend spirally from the drainage inlet toward the front end of the tube body.

According to one embodiment of the invention, the draining nephrostomy tube has a guide channel passing from the front end to the rear end of the tube body to allow passage through a guide to guide the tube body into the tube.

According to an embodiment of the present invention, the draining nephrostomy tube has a guide passage, wherein the guide passage extends from the rear end of the tube body to the front end of the tube body and the front end is arranged to be closed, and the guide passage of the tube body is configured to allow passage through a guide to guide the tube body into the tube, wherein the draining nephrostomy tube further comprises a balloon arranged at the rear of the tube body and close to the rear end of the tube body with respect to the drainage inlet, and has a fluid passage, wherein the balloon is adapted to be communicated with the fluid passage to allow inflation.

Drawings

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

Fig. 2A is a schematic view of a draining nephrostomy tube according to a preferred embodiment of the present invention.

Fig. 2B is a schematic view of the draining nephrostomy tube according to the above preferred embodiment of the present invention.

Fig. 3 is a schematic sectional view of the draining nephrostomy tube according to the above preferred embodiment of the present invention.

Fig. 4A-4E are schematic views of the application of a ostomy kit according to a preferred embodiment of the invention.

Fig. 5A to 5C are partial schematic views of three variant embodiments of the draining nephrostomy tube according to the above preferred embodiment of the invention.

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

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

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

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

Fig. 10 is a schematic diagram of a comparative experiment of the drainage renal fistula and the general fistula according to a preferred embodiment of the present invention.

Fig. 11 is a schematic diagram of a comparative experiment of the drainage 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 4E, a draining nephrostomy tube 1 and a fistulation tube set 1000 according to a preferred embodiment of the present invention are illustrated.

The ostomy kit 1000 may comprise the draining nephrostomy tube 1 and at least one guide 2, the guide 2 being adapted to guide the draining nephrostomy tube 1 into the body. It is of course to be understood that the draining nephrostomy tube 1 may also be directly accessible in certain application scenarios.

The draining nephrostomy tube 1 can build a basket tube in vivo and drain the substance in vivo to the outside of the body in time. The draining nephrostomy tube 1 is also capable of providing multiple drainage sites so that when one of the drainage sites is blocked, the other drainage sites can continue to provide blockage and multiple drainage sites are difficult to block for a long period of time. In other words, the draining nephrostomy tube 1 can in most cases keep at least one drainage site free.

In detail, the draining nephrostomy tube 1 has at least two drainage inlets 110, a drainage outlet 120 and a drainage channel 100, wherein the drainage channel 100 is adapted to drain a substance from one location to another. The substance may be in the form of a liquid, a mixture of solids and liquids, etc. The drainage inlet 110 is adapted to introduce an external substance into the drainage renal fistula 1, and the drainage outlet 120 is adapted to lead a substance out of the drainage renal fistula 1.

The number of the drainage inlets 110 may be two, three, four, five, six, or more. In the present embodiment, the number of the drainage inlets 110 is three for the description.

The draining nephrostomy tube 1 may include a tube body 10 and a balloon 20, wherein the tube body 10 is formed with the drainage inlet 110, the drainage outlet 120 and the drainage channel 100, and the tube body 10 has a front end 101 and a rear end 102, wherein the front end 101 is adapted to be inserted into the body and the rear end 102 is adapted to be placed outside the body. The drainage inlet 110 is arranged close to the front end 101 and the drainage outlet 120 is arranged at the rear end 102. The balloon 20 is arranged close to the front end 101 and at a predetermined distance from the front end 101, wherein the drainage inlet 110 is located closer to the front end 101 than the balloon 20.

After the draining nephrostomy tube 1 is inserted to a desired position, the balloon 20 is disposed at a predetermined position, and functions to press hemostasis on the one hand and can function to slide the tube body 10 outward on the other hand. The tube body 10 drains at a location before the balloon 20.

The draining nephrostomy tube 1 further comprises at least two separating walls 111 and at least two drainage slots 200, wherein each of the drainage slots 200 is formed between two of the separating walls 111. Each of the drainage slots 200 is adapted to correspond to one of the drainage inlets 110. In this embodiment, the number of the drainage inlets 110 is three, and the number of the drainage grooves 200 is three.

The drainage groove 200 is provided to extend from the drainage inlet 110 toward the front end 101 of the tube body 10. When the draining nephrostomy tube 1 is placed in the body, in a normal state, the fluid in the body flows from the inside of the body toward the outside of the body along the drainage channel 100, generating a certain suction force near the position of the drainage inlet 110 to guide the surrounding fluid also from the drainage inlet 110 into the drainage channel 100.

In other words, the fluid around the draining nephrostomy tube 1 has a tendency to draw closer towards the drainage channels 200 and the drainage inlets 110 of the draining nephrostomy tube 1. Smaller clots and fluid may be drawn together near the drainage inlet 110. if the clot is smaller in size than the drainage inlet 110, the clot may pass smoothly through the drainage inlet 110 and into the drainage channel 100. If the size of the blood clot is slightly larger than the drainage inlet 110, the blood clot can be squeezed and deformed by the suction force to smoothly enter the drainage channel 100 due to certain deformation capability of the blood clot. If the blood clot is larger in size and then becomes lodged in the drainage inlet 110, the blood clot will naturally disappear or become smaller over time, allowing the drainage inlet 110 to resume its clear position. In addition, when this drainage inlet 110 is blocked, the other two drainage inlets 110 can be kept open, which allows the drainage channel 100 to be kept open, so that the drainage nephrostomy tube 1 can also be kept in a normal operating state.

In addition, the blood clot may be sucked directly into the drainage inlet 110, or may move along the drainage groove 200 toward the drainage inlet 110, and in the process, if the size of the blood clot and the size of the drainage groove 200 match, the blood clot can smoothly pass through the drainage groove 200 and the drainage inlet 110. If the size of the blood clot and the size of the drainage channel 200 do not match, and the size of the blood clot is significantly larger than the drainage channel 200, the blood clot attached to the drainage channel 200 and contacting the separation wall 111 can be divided into smaller sizes due to the separation wall 111, so that the blood clot can smoothly pass through the drainage inlet 110.

In other words, the partition wall 111 forming the drainage groove 200 can not only serve as a guide, but also serve as a slit, or partition, to miniaturize a large clot. It will of course be appreciated that the material susceptible to clogging is not limited to blood clots, and is illustrated here by way of example.

Further, in the present embodiment, the tube body 10 includes a tube front portion 11 and a tube rear portion 12, wherein the drainage inlet 110 is located at a junction of the tube front portion 11 and the tube rear portion 12, wherein the drainage groove 200 is disposed at the tube front portion 11, and the balloon 20 is disposed at the tube rear portion 12.

The tube front 11 comprises the partition wall 111 and a tube stub 112, wherein the partition wall 111 is arranged to extend at a distance outwardly from the surface of the tube stub 112. It can also be said that the drainage grooves 200 are formed by recessing the surface of the tube front 11 inwardly at intervals. The tube rear portion 12 is provided hollow to form the drainage channel 100.

The tube body 10 has a guide channel 300, wherein at least a portion of the guide channel 300 is formed in the tube front portion 11 and at least a portion is formed in the tube rear portion 12. In more detail, the drainage channel 100 forms at least part of the guide channel 300. The guide channel 300 is used for the passage of a guide 2, for example a guide wire or an inner core, for guiding the draining nephrostomy tube 1 when it is introduced into the body.

Further, in this embodiment, the front end 101 of the tube body 10 is designed to be closed, and may be shaped like a bullet head, and has a smooth surface to facilitate the tube feeding. In detail, the drainage grooves 200 do not extend completely to the front end 101 of the tube body 10, and the guide channels 300 are not exposed at the front end 101, so that the surface of the tube body 10 at the front end 101 can be designed to be a gentle and gentle surface, which is beneficial to reduce injury to human body and difficulty in tube entry.

If the draining nephrostomy tube 1 is to be advanced under the guidance of a guide wire, a hole may be punched at the front end 101 of the tube body 10 to allow a self-guide wire to pass through the guide passage 300.

In other words, in the present embodiment, the guide passage 300 is closed at the front end 101 of the tube body 10, and in another embodiment of the present invention, the guide passage 300 is provided to penetrate the tube body 10.

In addition, in the present embodiment, the ends of the drainage grooves 200 are arranged in the same plane, and the drainage grooves 200 are arranged to be flush with each other.

Further, the draining nephrostomy tube 1 has a fluid passage 400, wherein the fluid passage 400 is adapted to communicate with the balloon 20, and the balloon 20 is inflated when the fluid is filled toward the balloon 20 through the fluid passage 400, and the balloon 20 is deflated when the fluid is released from the balloon 20 through the fluid passage 400. It is noted that the type of fluid is again not limited and may be a liquid, a liquid-solid mixture or a gas, such as air. The fluid passage 400 has an open state in which the fluid passage 400 communicates with the outside to charge or discharge the fluid toward or from the balloon 20, and a closed state in which the fluid passage 400 and the outside are kept closed, and the fluid inside the balloon 20 and the fluid passage 400 is kept in the balloon 20 or the fluid passage 400. The fluid passage 400 is controllably switchable between the open state and the closed state, for example, by controlling the opening and closing of a one-way valve.

When the draining nephrostomy tube 1 is inserted into the tube, the air sac 20 is in an uninflated state, and after the draining nephrostomy tube 1 is inserted into the tube, the air sac 20 can be inflated to play a pressing role and a fixing role.

Further, the draining 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 when entering the tube to determine the location of entering the tube. 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 the front end 101 of the tube body 10 to the rear end 102 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 conventional fistulization tube a and the draining 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 drainage kidney 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 drainage kidney fistulation tube B are adjusted so that the common fistulation tube A and the drainage kidney 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 fistulation tube a or the drainage 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 drainage of the drainage nephrostomy tube B in this example takes 33 seconds to complete.

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. 10 and fig. 11, the experimental results show that: the common fistulization tube A can not complete drainage, blood clots are blocked, and no fluid flows out; the drainage of the drainage nephrostomy tube B in this example takes 30 seconds to complete.

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 drainage of the drainage nephrostomy tube B in this example takes 20 seconds to complete. In conclusion, the present example provides a draining renal fistula B that reduces the chance of blockage relative to the fistula a.

Referring to fig. 5A, 5B and 5C, the draining nephrostomy tube 1 according to other preferred embodiments of the present invention is illustrated.

In the embodiment illustrated in fig. 5A, the number of the partition walls 111 of the draining nephrostomy tube 1 is four, the number of the drainage grooves 200 is four, and each of the drainage grooves 200 is formed between two adjacent partition walls 111.

In the embodiment illustrated in fig. 5B, the number of the partition walls 111 of the draining nephrostomy tube 1 is five, the number of the drainage grooves 200 is five, and each of the drainage grooves 200 is formed between two adjacent partition walls 111.

In the embodiment illustrated in fig. 5C, the number of the partition walls 111 of the draining nephrostomy tube 1 is six, the number of the drainage grooves 200 is six, and each of the drainage grooves 200 is formed between two adjacent partition walls 111.

It should be noted that the partition wall 111 forming the drainage grooves 200 may be sheet-shaped or hollow, so that two adjacent drainage grooves 200 can communicate with each other at the position of the partition wall 111. In addition, one end of the partition wall 111 is connected to the column 112, and the other end is exposed to the outside. In order to facilitate the tube feeding, one end of the partition wall 111 exposed to the outside is designed to be rounded to reduce the possibility of injury to the human body. It should be noted that the partition wall 111 is configured to be smooth at the location for dividing the blood clot, and does not affect the blood clot separation. This is because the separation function of the separation wall 111 is based on the fact that the separation wall 111 has a certain stiffness with respect to the blood clot.

Further, the tube front 11 has a side surface 113, wherein the side surface 113 is adapted to be in contact with a human body, and an end surface of the partition wall 111 forms the side surface 113. The side surface 113 is designed to be rounded.

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

This embodiment differs from the embodiment of fig. 2A to 3 mainly in that the guide channel 300, the leading end 101 of the tube body 10 of the draining nephrostomy tube 1 having a through hole 1010 which is a distal end of the guide channel 300 as viewed from the leading end 101 side.

In other words, in the present embodiment, the guide channel 300 is designed to be open, and it is worth mentioning that the guide channel 300 can also perform drainage, and the guide channel 300 performs drainage at the end portion with respect to the other drainage grooves 200 and the drainage inlets 110 performing drainage at the side portion. The size of the guide channel 300 can be designed to be larger as required to properly function as a flow guide.

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

The main difference between this embodiment and the previous embodiments is the arrangement of the drainage slots 200. In this embodiment, the drainage grooves 200 extend from the drainage inlet 110 toward the front end 101 of the tube body 10 and each of the drainage grooves 200 is arranged to have a different length.

Illustratively, one of the drainage channels 200 may extend from one of the drainage inlets 110 directly to near the front end 101 of the tube body 10 and at a distance of 1cm from the front end 101, one of the drainage channels 200 may extend from one of the drainage inlets 110 directly to near the front end 101 of the tube body 10 and at a distance of 2cm from the front end 101, and one of the drainage channels 200 may extend from one of the drainage inlets 110 directly to near the front end 101 of the tube body 10 and at a distance of 3cm from the front end 101. A plurality of the drainage inlets 110 are located in the same plane.

In other words, the two ends of the drainage groove 200 are not flush, and in this embodiment, the end of the drainage groove 200 that is adjacent to the front end 101 of the tube body 10 is not flush. In this way, if a large blood clot covers the front end 101 of the tube body 10, all of the drainage grooves 200 will not be completely blocked at the end of this position, reducing the chance of the entire draining nephrostomy tube 1 becoming blocked.

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

This embodiment differs from the previous embodiments primarily in the placement of the drainage slots 200. In this embodiment, the drainage grooves 200 extend from the drainage inlet 110 toward the front end 101 of the tube body 10 and each of the drainage grooves 200 is arranged to have a different length, and the drainage inlet 110 is located at a different position.

Illustratively, one of the drainage channels 200 extends ycm from a location spaced from the front end 101xcm of the tube body 10 to communicate with one of the drainage inlets 110, one of the drainage channels 200 extends y +1cm from a location spaced from the front end 101xcm of the tube body 10 to communicate with one of the drainage inlets 110, and one of the drainage channels 200 extends y +2cm from a location spaced from the front end 101xcm of the tube body 10 to communicate with one of the drainage inlets 110.

In other words, the end of the drainage groove 200 near the front end 101 of the tube body 10 is disposed flush, but the drainage inlets 110 are disposed non-flush, may be stepped, or staggered.

In this way, if a large blood clot directly and temporarily blocks one of the drainage inlets 110, the chance that the other drainage inlets 110 are simultaneously blocked is small because the drainage inlets 110 are arranged non-coplanar, and the entire drainage nephrostomy tube 1 can be maintained in a relatively open state.

It will be appreciated that when the drainage inlets 110 are disposed non-flush, the length of each of the drainage slots 200 may be the same or different.

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

This embodiment differs from the previous embodiments primarily in the placement of the drainage slots 200. In the above-described embodiments, the drainage grooves 200 are arranged to extend along the axial direction of the tube body 10, or the extending direction of the drainage grooves 200 and the axial direction of the tube body 10 are parallel.

In this embodiment, the extending direction of the drainage groove 200 is curved, for example, the drainage groove 200 may be formed by extending spirally from the drainage inlet 110 toward the front end 101 of the tube body 10. Viewed from the side of the tube body 10, in the same axial direction, since the extending direction of the drainage grooves 200 is curved, there are positions where they appear to be grooved and some positions where they appear not to be grooved.

In this way, the length of the drainage groove 200 can be designed to be longer for the same length of the draining nephrostomy tube 1. In other words, a clot that is stuck in the place of the drainage channel 200 can take more travel to reach the location of the drainage inlet 110, which allows sufficient time for the clot to be separated into small pieces.

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. A draining nephrostomy tube comprising a tube body, a marking thread and having at least two drainage inlets, a drainage outlet, a drainage channel and at least two drainage grooves, wherein one of said drainage grooves communicates with one of said drainage inlets and said drainage inlet and said drainage outlet are respectively located at both ends of said drainage channel and communicate with said drainage channel, wherein said tube body comprises a tube front portion and a tube rear portion, said drainage channel is penetratingly formed at said tube rear portion, said tube front portion has a side surface and at least a portion of said side surface concavely forms said drainage groove, wherein said tube body has a front end and an opposite rear end, said drainage outlet is located at said rear end position, said drainage groove is located at said drainage inlet extending toward said front end of said tube body, wherein the marking line is configured to be identifiable to highlight a location of the tube body.

2. The draining nephrostomy tube of claim 1 wherein said tube front portion includes at least two dividing walls and a column of tubing, wherein said dividing walls are spaced apart and extend outwardly along said column of tubing, each said drainage channel being formed between adjacent two of said dividing walls.

3. The draining nephrostomy tube of claim 1 wherein said tube rear portion includes an enclosing wall which surrounds said drainage channel and which forms said drainage outlet at one end and said drainage inlet at the other end.

4. Draining nephrostomy tube according to claim 2, wherein said tube rear portion comprises a tubular wall, wherein said tubular wall surrounds to form said drainage channel and said tubular wall surrounds to form said drainage outlet at one end and at least two of said drainage inlets at the other end with said partition wall, said tubular column forming said drainage inlet in the direction of extension of said drainage channel.

5. The draining nephrostomy tube of any one of claims 1 to 4 wherein the number of said drainage channels is more than three and each of said drainage inlets corresponding to said drainage channel is arranged in a step-like manner such that the distance from one of said drainage inlets to said front end of said tube body is less than the distance from the other of said drainage inlets to said front end of said tube body.

6. The draining nephrostomy tube of any one of claims 1 to 4 wherein the number of said drainage channels is more than three and the end of each said drainage channel adjacent to said forward end of said tube body is arranged in a step-like manner such that the distance from the end of one said drainage channel adjacent to said forward end of said tube body to said forward end is smaller than the distance from the end of the other said drainage channel adjacent to said forward end of said tube body to said forward end.

7. Draining nephrostomy tube according to any one of claims 1 to 4, wherein each said drainage groove is arranged end-flush on said tube body.

8. Draining nephrostomy tube according to any one of claims 1 to 4, wherein said drainage groove is provided to extend helically from said drainage inlet towards said front end of said tube body.

9. The draining nephrostomy tube of claim 1 wherein said draining nephrostomy tube has a guide channel therethrough from said anterior end to said posterior end of said tube body to allow passage through a guide to guide said tube body into the tube.

10. The draining nephrostomy tube of claim 1 wherein said draining nephrostomy tube has a guide channel wherein said guide channel extends from said posterior end of said tube body to said anterior end of said tube body and said anterior end is configured to be closed, and said guide channel of said tube body is configured to allow passage through a guide to guide said tube body into a tube, wherein said draining nephrostomy tube further comprises a balloon disposed at said tube posterior of said tube body and proximate to said posterior end of said tube body relative to said drainage inlet and having a fluid passage, wherein said balloon is adapted to be in communication with said fluid passage to allow inflation.