CN113713197A - Prevent tunnel infection type peritoneal dialysis and put into pipe - Google Patents

Abstract

An anti-tunnel infection type peritoneal dialysis implantation tube comprises an inner tube body indwelling in the abdominal cavity and a joint tube outside the patient's body for connecting with a peritoneal dialysis device, the bottom end of the joint tube is provided with a flexible silicone disc, and the inner tube body It is connected to it by a section of drug infiltration tube. The drug infiltration tube includes a sleeve with a cavity inside the side wall, and the cavity is filled with polyvinyl alcohol fibers to form a liquid storage cavity. The surface of the drug infiltration tube is divided into a drug infiltration area and a non-drug infiltration area. Through the built-in drug infiltration tube and a flexible silica gel disc on the abdominal surface, the invention realizes that the inner part of the implanted tube can be sterilized without inserting and pulling out the implanted tube, so as to reduce the pain of the patient and avoid pulling out The risk of bacterial infection after exit can effectively reduce the incidence of tunnel infection.

Description

Prevent tunnel infection type peritoneal dialysis and put into pipe

Technical Field

The invention relates to a peritoneal dialysis apparatus for nephrology department, in particular to a tunnel infection prevention type peritoneal dialysis imbedding tube.

Background

In the existing peritoneal dialysis implanting tube, a part in an abdominal cavity is fixed with tissues such as rectus abdominis and the like, and the other end of the implanting tube extends out of the body to form a joint tube;

in daily care, the outlet of the insertion tube needs to be kept dry, once the catheter is not noticed, catheter-related infection, particularly tunnel infection, is likely to occur, in order to prevent the tunnel infection, the insertion tube needs to be pulled out by a certain distance with little force in nursing, and then alcohol or iodophor is smeared on the surface of the insertion tube for disinfection.

Disclosure of Invention

In order to solve the risk of bacterial infection caused by the fact that a plug-in insertion tube needs to be disinfected in the prior art, the invention provides a tunnel infection prevention type peritoneal dialysis insertion tube which can disinfect the inner part of an insertion tube body without plugging-in the insertion tube through an internally-arranged medicine seepage tube and a flexible silica gel disc positioned on the surface of the abdomen, so that the pain of a patient is relieved, the risk of bacterial infection caused by the fact that the insertion tube is pulled out is avoided, and the morbidity of tunnel infection is effectively reduced.

The technical scheme adopted by the invention for solving the technical problems is as follows: a tunnel infection prevention type peritoneal dialysis insertion tube comprises an inner tube body and a connector tube, wherein the inner tube body is arranged in an abdominal cavity, the connector tube is positioned outside a patient body and used for being connected with peritoneal dialysis equipment, a flexible silica gel disc attached to the surface of abdominal skin is arranged at the bottom end of the connector tube, the inner tube body is connected with the flexible silica gel disc through a section of drug permeation tube, dialysate injected through the connector tube is injected into the abdominal cavity through the drug permeation tube and the inner tube body, the drug permeation tube comprises a sleeve made of medical silica gel, a cavity is formed in the side wall of the sleeve, a liquid storage cavity is formed by filling polyvinyl alcohol fibers in the cavity, a liquid medicine injection port is formed in the upper surface of the flexible silica gel disc, and the liquid medicine is injected into the liquid storage cavity through a pore channel in the flexible silica gel disc by the liquid medicine injection port; the surface of the drug permeating tube is divided into a drug permeating area with drug permeating holes and a non-drug permeating area without drug permeating holes, wherein the drug permeating area is positioned in rectus abdominis and tissues, and the non-drug permeating area is closer to the surface of the skin relative to the drug permeating area so as to keep the skin on the surface dry.

As an optimized scheme of the anti-tunnel-infection peritoneal dialysis imbedding tube, the upper surface of the flexible silica gel disc is further provided with a liquid sampling tube, the liquid sampling tube is communicated with the top of the liquid storage cavity through another pore channel in the flexible silica gel disc, and liquid in the liquid storage cavity is extracted through an external sampling tool to carry out assay.

As another optimized scheme of the above-mentioned peritoneal dialysis implantation tube for preventing tunnel infection, the drug infiltration tube is arranged around the outer wall of an expandable sleeve, a dialysate passage for communicating the joint tube with the inner tube body is formed inside the expandable sleeve, the top of the expandable sleeve is connected with the lower surface of the flexible silica gel disc, and an inlet tube arranged on the upper surface of the flexible silica gel disc is communicated with the expandable sleeve through a pore passage inside the expandable sleeve, so as to control the expansion or contraction of the expandable sleeve, and after the expandable sleeve is expanded, the outer side wall of the drug infiltration tube protrudes out of the outer side wall of the inner tube body, so that the drug infiltration tube is convenient to be connected and fixed with rectus abdominis and tissues in operation; when the expandable sleeve is contracted, the middle lower part of the outer side wall of the drug seepage tube is retracted to be lower than the outer side wall of the inner tube body, so that the post-operation implanted tube can be conveniently pulled out.

As another optimized scheme of the anti-tunnel infection peritoneal dialysis implanting tube, the inflatable sleeve comprises a cylindrical frame, the longitudinal section of the cylindrical frame is in a shape of a horizontal rectangle with an opening at the outer side, an elastic skin made of medical silica gel is arranged on the opening at the outer side, so that a closed inflatable cavity is formed in the cylindrical frame, and the top of the inflatable cavity is communicated with an inlet tube on the upper surface of the inflatable cavity through a pore channel in a flexible silica gel disc; the inner diameter of the cylindrical frame is smaller than that of the inner pipe body, so that a clamping table protruding inwards is formed at the joint of the cylindrical frame and the inner pipe body.

As another optimization scheme of the anti-tunnel infection type peritoneal dialysis implanting tube, the lower part of the joint tube is provided with a corrugated section, so that the joint tube has bending property at the corrugated section.

As another optimized scheme of the above-mentioned tunnel infection prevention type peritoneal dialysis imbedding tube, a hemispherical expansion part is arranged at the bottom end of the inner tube body, the expansion part is of a hollow structure, and a dialysate outlet is arranged at the center of the expansion part.

As another optimized scheme of the above-mentioned anti-tunnel infection type peritoneal dialysis implanting tube, the inner diameter of the drug infiltration tube is smaller than the inner diameter of the inner tube body, so that a clamping table protruding inwards is formed at the joint of the drug infiltration tube and the inner tube body, a sealing plug is arranged in the joint tube, the sealing plug is in threaded connection with the end part of the joint tube, an expansion air bag is arranged in the sealing plug, and the expansion air bag is matched with the clamping table after being inflated and expanded to cut off a dialysate passage in the inner tube body.

As another optimization scheme of the above-mentioned tunnel infection prevention type peritoneal dialysis imbedding tube, the blocking plug comprises a plug cover covering the end part of the joint tube, an outer connecting cylinder extending downwards is arranged around the edge of the plug cover, the inner wall of the outer connecting cylinder is in thread fit connection with the outer wall of the end part of the joint tube, a connecting rod extending downwards is arranged in the center of the plug cover, after the plug cover is in thread connection with the joint tube, the bottom end of the connecting rod extends to the clamping table, and the expansion air bag is arranged at the bottom end of the connecting rod and is filled with or pumped out gas through a gas hole in the connecting rod.

As another optimized scheme of the above-mentioned anti-tunnel infection type peritoneal dialysis insertion tube, an inner connecting tube extending downwards is arranged in the center of the sealing plug, the top of the inner connecting tube is opened to form an inflation area, a hollow connecting rod is arranged at the bottom of the inflation area, after the end of the connector tube is sealed by the sealing plug, the bottom end of the connecting rod extends to a clamping table, the inflatable air bag is arranged at the bottom end of the connecting rod, a self-inflating assembly can be inserted or pulled out from the inflation area, and inflation or exhaust contraction of the inflatable air bag is realized by insertion or pulling out of the self-inflating assembly.

As another optimized scheme of the above-mentioned tunnel infection prevention type peritoneal dialysis imbedding tube, the self-inflating assembly comprises a plugging plate and a rubber plug arranged below the plugging plate through a push-pull rod, the rubber plug is inserted into the inner connecting cylinder and then matched with the inner wall of the inner connecting cylinder, and air in the inflating area is extruded downwards to enter the inflatable air bag, so that the inflatable air bag is inflated and a dialysate passage in the inner tube body is cut off.

Compared with the prior art, the invention has the following beneficial effects:

1) according to the invention, the built-in medicine permeating tube and the flexible silica gel disc positioned on the abdominal body surface are adopted, so that the disinfection of the part in the tube body can be completed without inserting and pulling the inserting tube, the pain of a patient is relieved, meanwhile, the risk of bacterial infection caused by pulling out is avoided, and the morbidity of tunnel infection is effectively reduced; the flexible silica gel disc plays a role in fixing, a liquid storage cavity formed by polyvinyl alcohol fibers is filled in the medicine permeation tube and is divided into a medicine permeation area and a medicine non-permeation area, medicine permeation holes are formed in the surface of the medicine permeation area, the medicine non-permeation area is closer to the surface of the skin relative to the medicine permeation area, accordingly, the skin on the outer surface is kept dry, medicines such as inflammation diminishing and sterilization can be slowly released from the medicine permeation area, and tunnel infection is prevented; the medicine in the liquid storage cavity can be selectively dripped according to the requirement, and the added channel is positioned on the surface of the flexible silica gel disc;

2) because the invention can not pull out the excrement to infect like the existing peritoneal dialysis imbedding tube, but needs to monitor the internal recovery condition, therefore, the invention designs the liquid sampling tube on the flexible silica gel disc, the liquid sampling tube is communicated with the liquid storage cavity through the pore canal, when the internal part of the body has inflammation or infection and other symptoms, the liquid sampling tube can be embodied in the tissue liquid, and the infection germ can enter the liquid storage cavity along with the tissue liquid and is extracted through the liquid sampling tube, and the test can be carried out to judge whether the infection occurs;

3) in order to facilitate later-stage detachment of the implantation tube, the expandable sleeve is arranged in the medicine infiltration tube, when the implantation tube is implanted, gas or liquid is filled in the expandable sleeve to expand the expandable sleeve so as to drive the medicine infiltration tube to expand, the outer diameter of the expandable sleeve exceeds the inner tube body, and because the outer wall of the medicine infiltration tube is in contact with tissues such as rectus abdominis and the like, when the implantation tube is required to be detached after treatment is finished, the gas or liquid in the expandable sleeve is extracted, so that the expandable sleeve contracts and simultaneously drives the outer diameter of the medicine infiltration tube to be smaller than the inner tube body, thereby facilitating the extraction;

4) according to the invention, the clamping table protruding inwards is designed at the joint of the upper end of the inner tube body and the drug seepage tube or the joint of the expandable sleeve, the clamping table is matched with the plug inner expansion air bag for sealing the joint tube, and when the opening end of the joint tube is sealed by the plug, the expansion air bag is inflated and expanded and is matched with the clamping table to cut off a dialysate channel, so that external bacteria are prevented from entering the body through the interior of the joint tube;

5) in order to reduce the operation steps as much as possible, a self-inflating assembly is arranged in the plugging plug, and when the plugging plug closes the end part of the connector pipe, the self-inflating assembly can be inserted or pulled out to inflate or deflate the inflatable air bag.

Drawings

FIG. 1 is a schematic view of the present invention without peritoneal dialysis;

FIG. 2 is a schematic view of the present invention during peritoneal dialysis or drainage;

FIG. 3 is a schematic view of the self-inflating assembly in pulling out a plug;

FIG. 4 is a schematic view after the plug is pulled out;

FIG. 5 is a schematic view of the construction of the drug-impregnated tube, the expandable sleeve and the flexible silicone disc (in vivo, in the expanded state of the expandable sleeve);

FIG. 6 is a schematic structural view of the drug-permeating tube, the expandable sleeve and the flexible silica gel tray (when the tube needs to be pulled out and the expandable sleeve is contracted);

FIG. 7 is a schematic structural view of the expandable sleeve and flexible silicone disc (in vivo, with the expandable sleeve in an expanded state);

FIG. 8 is a schematic structural view of an expandable sleeve and a flexible silicone disc (when tube drawing is required and the expandable sleeve is contracted);

FIG. 9 is a schematic structural view of a plugging plug;

FIG. 10 is a schematic view of the self-inflating assembly;

reference numerals: 1. the medical device comprises an inner tube body, 101, an expansion part, 102, a dialysate outlet, 2, a drug permeating tube, 201, a sleeve, 202, a liquid storage cavity, 203, a non-drug permeating region, 204, a drug permeating region, 3, a flexible silica gel disc, 301, a disc, 302, a drug liquid pouring port, 303, an inlet tube, 304, a liquid sampling tube, 4, a connector tube, 401, a corrugated section, 5, an expandable sleeve, 501, a cylindrical frame, 502, a clamping platform, 503, an elastic skin, 504, an expandable cavity, 6, a plug, 601, a plug cover, 602, an inner connecting cylinder, 603, an inflating region, 604, a connecting rod, 605, an expanding air bag, 606, an outer connecting cylinder, 7, a self-inflating component, 701, a plugging plate, 702, a threaded connecting pad, 703, a push-pull rod, 704, a rubber plug, 705, a corrugated bending part, 706 and a filling rod.

Detailed Description

The technical solution of the present invention is further described below with reference to specific embodiments, and the materials, dimensions, and connections between the joint tube 4, the drug permeation tube 2, and the inner tube body 1, and how the joint tube is connected to the peritoneal dialysis apparatus in the following embodiments are all the prior art, and are not described herein again.

Example 1

A peritoneal dialysis imbedding tube for preventing tunnel infection comprises an inner tube body 1 detained in an abdominal cavity and a joint tube 4 which is arranged outside a patient body and is used for being connected with peritoneal dialysis equipment, wherein the joint tube 4 is arranged outside the patient body, is normally closed, is opened during dialysis and is communicated with the peritoneal dialysis equipment; the bottom end of the joint pipe 4 is provided with a flexible silica gel disc 3 attached to the surface of abdominal skin, the flexible silica gel disc 3 is a disc 301 made of silica gel material and can be attached to the abdominal skin of a patient so as to assist the placing pipe to be fixed, the flexible silica gel disc 3 is actually a disc with a through hole in the middle, the inner pipe body 1 is connected with the flexible silica gel disc 3 through a section of medicine infiltration pipe 2, dialysate injected by the joint pipe 4 is injected into an abdominal cavity through the medicine infiltration pipe 2 and the inner pipe body 1, the medicine infiltration pipe 2 comprises a sleeve 201 made of medical silica gel, two ends of the sleeve 201 are open, a channel through which the dialysate passes is formed in the middle, a cavity is formed in the side wall of the sleeve 201, the sleeve 201 is actually a cylindrical piece formed by rolling up a hollow medical silica gel rectangular plate and adhering end to end, a hollow part in the rectangular plate forms an annular cavity, and a liquid storage cavity 202 is formed by filling polyvinyl alcohol fiber in the cavity, the upper end of the liquid storage cavity 202 is connected with the lower surface of the flexible silica gel plate 3, a liquid medicine filling port 302 is arranged on the upper surface of the flexible silica gel plate 3, the liquid medicine filling port 302 is a tubular part protruding out of the surface of the flexible silica gel plate 3, the tubular part is sealed by a plug at ordinary times, and when a medicament needs to be filled, the plug is opened for filling; of course, the liquid medicine filling opening 302 may also be an opening hole or a groove formed on the upper surface of the flexible silicone disc 3, but when the medicine is not required to be filled, a plug is required to seal the opening hole or the groove; the liquid medicine filling port 302 injects liquid medicine into the liquid storage cavity 202 through a pore channel in the flexible silica gel disc 3; ooze the surface of medicine pipe 2 and divide into and have the medicine zone 204 that oozes the medicine hole and do not have the non-medicine zone 203 that oozes the medicine hole, ooze the medicine hole and be the diameter no longer than 1 mm's through hole, intercommunication stock solution chamber 202 and outside, can make the liquid medicament in the stock solution chamber 202 slowly ooze through oozing the medicine hole to the persistence slowly acts on internal tissue, eliminate inflammation and kill the bacterium, wherein, ooze medicine zone 204 and be in rectus abdominis muscle and tissue, non-medicine zone 203 that oozes is more close to the skin surface for oozing medicine zone 204 to keep exterior skin dry.

The foregoing is a basic embodiment of the present invention, and further modifications, optimizations and limitations can be made on the foregoing, so as to obtain the following examples:

example 2

This embodiment is an improved scheme based on embodiment 1, and the main structure thereof is the same as embodiment 1, and the improvement point is that: as shown in fig. 5 and 6, a liquid sampling tube 304 is further disposed on the upper surface of the flexible silicone disc 3, the liquid sampling tube 304 and the liquid medicine filling opening 302 are located at different positions on the flexible silicone disc 3, and are staggered from each other, so that they do not affect each other, the liquid sampling tube 304 is communicated with the top of the liquid storage cavity 202 through another pore channel in the flexible silicone disc 3, and liquid in the liquid storage cavity 202 is extracted by an external sampling tool for assay, thereby checking whether infection occurs, the external sampling tool generally selects a syringe, the liquid sampling tube 304 is a tubular member protruding out of the surface of the flexible silicone disc 3, and is closed by a plug at ordinary times, and when it is necessary to check whether infection occurs by sampling, the plug is opened and the syringe is butted with the plug for sampling; of course, the liquid sampling tube 304 may be an open hole or slot formed in the upper surface of the flexible silicone disc 3, but it may be closed by a plug when sampling assay is not required. In this embodiment, bacteria may enter the reservoir 202 upon infection due to the presence of the drug-permeable pores, and may be detected by drawing fluid from the reservoir 202 for testing.

Example 3

The present embodiment is another modified scheme based on embodiment 1, and the main structure of the present embodiment is the same as that of embodiment 1, and the improvement point is that: as shown in fig. 7 and 8, the drug infiltration tube 2 is arranged around the outer wall of an expandable sleeve 5, a dialysate passage communicating the adapter tube 4 and the inner tube 1 is formed inside the expandable sleeve 5, the expandable sleeve 5 is preferably a cylinder made of medical silica gel material, the side wall of the expandable sleeve 5 is hollow, expansion or contraction of the expandable sleeve 5 can be realized by injecting or extracting liquid or gas into the expandable sleeve, the expansion and contraction of the expandable sleeve 5 are expansion and contraction performed around the dialysate passage without affecting the smoothness of the dialysate passage, the top of the expandable sleeve 5 is connected with the lower surface of the flexible silica gel disc 3, an inlet tube 303 arranged on the upper surface of the flexible silica gel disc 3 is communicated with the expandable sleeve 5 through a pore passage inside the expandable sleeve, so as to control the expansion or contraction of the expandable sleeve 5, and the inlet tube 303, the liquid sampling tube 304 and the liquid medicine injection port 302 are in different positions on the flexible silica gel disc 3, the inlet pipe 303 is a tubular member protruding out of the surface of the flexible silica gel tray 3, and is usually sealed by a plug, and when a medicament needs to be filled, the plug is opened for filling; of course, the inlet tube 303 may also be an open hole or a groove formed on the upper surface of the flexible silicone disc 3, but when the filling of the medicament is not required, it needs to be closed by a plug; after the expandable sleeve 5 is expanded, the outer side wall of the drug seepage tube 2 protrudes out of the outer side wall of the inner tube body 1, so that the drug seepage tube 2 is convenient to connect and fix with rectus abdominis and tissues in the operation; when the expandable sleeve 5 is contracted, the middle lower part of the outer side wall of the drug seepage tube 2 is retracted to be lower than the outer side wall of the inner tube body 1, so that the post-operation built-in tube can be conveniently pulled out.

In this embodiment, because the expandable sleeve 5 and the drug permeation tube 2 are both made of medical silica gel material and have certain soft elasticity, the top ends of the expandable sleeve 5 and the drug permeation tube 2 are fixed on the lower surface of the flexible silica gel disc 3, the expandable sleeve 5 contracts or expands, the fixing part of the top end of the expandable sleeve is not changed, and the expandable sleeve is only gradually deformed from the bottom to the top during contraction, so that the expandable sleeve becomes a shape with a narrow bottom and a wide top, but the tube is easier to pull out due to the upper part being close to the surface of the skin, and the change and the displacement of the fixing part of the top end are not caused during expansion, and the top end of the expandable sleeve 5 is not displaced, so that the top end of the drug permeation tube 2 on the outer side wall of the expandable sleeve is not displaced, and the two drug permeation tubes are not displaced with the pore canal in the flexible silica gel disc 3.

Example 4

This embodiment is an improved scheme based on embodiment 3, and the main structure thereof is the same as embodiment 3, and the improvement point is that: as shown in fig. 7 and 8, the expandable cannula 5 comprises a cylindrical frame 501 made of medical plastic and having a certain mechanical strength, the longitudinal section of the cylindrical frame 501 is in a shape of "]" with an opening at the outer side, and an elastic skin 503 made of medical silica gel is arranged at the opening at the outer side, so that a closed expandable cavity 504 is formed in the cylindrical frame 501, and the top of the expandable cavity 504 is communicated with an inlet pipe 303 at the upper surface of the expandable cavity through a pore channel in the flexible silica gel disc 3; the inner diameter of the cylindrical frame 501 is smaller than that of the inner tube 1, so that a chuck 502 protruding inward is formed at the junction of the two.

In this embodiment, the inner side wall of the drug permeation tube 2 is connected to an elastic skin 503, the cylindrical frame 501 is actually a cylindrical side plate and a structure with a "]" -shaped cross section formed by baffles arranged on the outer side surfaces of two ends of the side plate, the baffle at the bottom end is connected to the inner tube body 1, the baffle at the top end is connected to the flexible silica gel disc 3, the inlet tube 303 and a pore channel inside the flexible silica gel disc 3 are arranged on the baffle at the top end so as to be communicated with the expandable cavity 504, and the elastic skin 503 is located between the two baffles; the inner diameter of the side plate in the shape of a cylinder is smaller than that of the inner pipe body 1, but the free end position of the bottom end baffle plate does not exceed the outer side wall of the inner pipe body 1, so that after gas or liquid is injected into the expandable cavity 504, the elastic skin 503 expands outwards synchronously, the medicine infiltration tube 2 on the elastic skin expands outwards to form an expansion part convenient for being connected and fixed with tissues and rectus abdominis, when the pipe is required to be pulled out, water cargo liquid in the expandable cavity 504 is extracted, the elastic skin 503 retracts, and the medicine infiltration tube 2 is also retracted into the expandable cavity 504, but because the top end of the medicine infiltration tube 2 is fixed, the retraction is changed into a cone-like shape gradually increasing from the bottom to the top, and the pipe pulling operation is convenient.

Example 5

The present embodiment is another modified scheme based on embodiment 1, and the main structure of the present embodiment is the same as that of embodiment 1, and the improvement point is that: as shown in fig. 4, the joint pipe 4 has a corrugated portion 401 at a lower portion thereof so that the joint pipe 4 can be easily bent at the corrugated portion 401 to facilitate fixing, and the corrugated portion 401 is designed to block transmission of the collision force of the joint pipe 4 to the inner pipe body 1. By corrugated section 401 is meant a tube formed of a foldable corrugated sheet of elastomeric material that can be stretched and contracted and that retains its stretched or contracted shape after stretching or contraction, the corrugated section 401 being adjacent to the upper surface of the flexible silicone disc 3.

Example 6

The present embodiment is another modified scheme based on embodiment 1, and the main structure of the present embodiment is the same as that of embodiment 1, and the improvement point is that: as shown in fig. 2 and 4, the bottom end of the inner tube 1 is provided with a hemispherical expansion part 101, the expansion part 101 is a hollow structure, and a dialysate outlet 102 is provided at the center thereof. The expansion part 101 is also made of medical silica gel, the dialysate outlet 102 is a rectangular hole, so that blockage is less prone to occurring, and the expansion part 101 has the function of protecting tissues in the abdominal cavity; the diameter of the hemisphere is the same as that of the inner pipe body 1, and the hemisphere surface is fixedly connected with the bottom end of the inner pipe body 1.

Example 7

The present embodiment is another modified scheme based on embodiment 1, and the main structure of the present embodiment is the same as that of embodiment 1, and the improvement point is that: the inner diameter of the drug permeating tube 2 is smaller than that of the inner tube body 1, so that a clamping platform 502 protruding inwards is formed at the joint of the drug permeating tube and the inner tube body 1, a sealing plug 6 is arranged in the joint tube 4, as shown in figures 1 and 3, the sealing plug 6 is in threaded connection with the end part of the joint tube 4, and an expanding air bag 605 is arranged in the sealing plug 6, and the expanding air bag 605 is matched with the clamping platform 502 after being inflated and expanded to cut off a dialysate passage in the inner tube body 1.

Example 8

This embodiment is an improved scheme based on embodiment 7, and the main structure thereof is the same as that of embodiment 7, and the improvement point is that: as shown in fig. 1, 3 and 9, the sealing plug 6 includes a plug cap 601 covering the end of the joint pipe 4, an outer connecting cylinder 606 extending downward is provided around the edge of the plug cap 601, the inner wall of the outer connecting cylinder 606 is in screw-fit connection with the outer wall of the end of the joint pipe 4, a connecting rod 604 extending downward is provided in the center of the plug cap 601, after the plug cap 601 is in screw-fit connection with the joint pipe 4, the bottom end of the connecting rod 604 extends to the clamping platform 502 but is located slightly higher than the clamping platform 502, and the inflatable bladder 605 is provided at the bottom end of the connecting rod 604 and is filled with or evacuated from the air through an air passage in the connecting rod 604.

Example 9

This embodiment is another modified scheme based on embodiment 7, and the main structure thereof is the same as embodiment 7, and the improvement point is that: as shown in fig. 1, 3 and 9, the plug 6 is provided at the center thereof with an inner connecting cylinder 602 extending downward, and the outer side wall of the inner connecting cylinder 602 has a gap with the inner wall of the joint pipe 4, or interference fit, the top of the inner connecting cylinder 602 is opened, thereby forming an inflation area 603, the bottom of the inflation area 603 is provided with a hollow connecting rod 604, the inside of the connecting rod 604 is provided with a through hole running through the length direction of the connecting rod, the diameter of the connecting rod 604 is a little bit thinner, the material is saved, and the connecting rod is lighter, when the plug 6 closes the end of the adapter tube 4, the bottom end of the connecting rod 604 extends to the clamping platform 502, but is positioned slightly above the chuck 502, the inflatable bladder 605 is disposed at the bottom end of the connecting rod 604, and is communicated with the through hole in the connecting rod 604, a self-inflating component 7 can be inserted into or pulled out of the inflating area 603, and the inflation or the exhaust contraction of the inflatable air bag 605 can be realized by the insertion or the pulling out of the self-inflating component 7.

Example 10

This embodiment is an improved scheme based on embodiment 9, and the main structure thereof is the same as that of embodiment 9, and the improvement point is that: as shown in fig. 10, the self-inflating assembly 7 comprises a blocking plate 701 for closing the top opening of the inner tube 602 and a rubber stopper 704 disposed below the blocking plate 701 via a push-pull rod 703, wherein the push-pull rod 703 is thin, thereby saving material and reducing weight, and the rubber stopper 704 is inserted into the inner tube 602 and then engaged with the inner wall of the inner tube 602 to press the air in the inflating region 603 downward into the inflating bladder 605, thereby inflating the inflating bladder 602 and cutting off the dialysate passage in the inner tube 1.

In this embodiment, when the plugging plate 701 closes the top opening of the inner connecting cylinder 602, the rubber plug 704 is located at the bottom of the inner connecting cylinder 602; the inner connecting cylinder 602 is designed to have an inner size and length such that when air compressed in the inner portion thereof enters the inflatable bladder 605, the inflatable bladder 605 is fully inflated to cut off the passage of the dialysate in the inner tube 1.

Example 11

This embodiment is an improved scheme based on embodiment 10, and the main structure thereof is the same as that of embodiment 10, and the improvement point is that: as shown in fig. 10, a threaded connection pad 702 is disposed at the center of the bottom of the plugging plate 701, an external thread is disposed at the edge of the threaded connection pad 702, an internal thread is disposed at the inner wall port of the inner connection cylinder 602, and the external thread of the threaded connection pad 702 is engaged with the internal thread, so that the plugging plate 701 is fixed in the inner connection cylinder 602 to prevent the gas from escaping.

Example 12

This embodiment is another modified scheme based on embodiment 10, and the main structure thereof is the same as that of embodiment 10, and the improvement point is that: as shown in fig. 10, a filling rod 706 is designed at the center of the bottom of the rubber plug 704, and the filling rod 706 is matched with the gas channel in the connecting rod 604, so that as much gas as possible enters the inflatable air bag 605; the filling rod 706 is made of silicone, the diameter of the filling rod 706 is slightly smaller than the gas hole in the connecting rod 604, and the filling rod 706 also has a corrugated bending part 705 at the upper part thereof, which means that after the joint pipe 4 is bent, the filling rod 706 in the filling rod is also bent at the corrugated bending part 705.

Claims (10)

1. A prevent tunnel infection type peritoneal dialysis and insert pipe, includes interior body (1) of indwelling in the abdominal cavity and be used for being connected with peritoneal dialysis equipment in patient's external connector pipe (4), its characterized in that: the bottom end of the joint pipe (4) is provided with a flexible silica gel disc (3) attached to the surface of abdominal skin, the inner pipe body (1) is connected with the flexible silica gel disc (3) through a section of drug permeation pipe (2), dialysate injected from the joint pipe (4) is injected into an abdominal cavity through the drug permeation pipe (2) and the inner pipe body (1), the drug permeation pipe (2) comprises a sleeve (201) made of medical silica gel, a cavity is formed in the side wall of the sleeve (201), a liquid storage cavity (202) is formed by filling polyvinyl alcohol fibers in the cavity, a liquid medicine filling opening (302) is formed in the upper surface of the flexible silica gel disc (3), and the liquid medicine filling opening (302) injects liquid medicine into the liquid storage cavity (202) through a pore channel in the flexible silica gel disc (3); the surface of the drug permeating tube (2) is divided into a drug permeating area (204) with drug permeating holes and a non-drug permeating area (203) without drug permeating holes, wherein the drug permeating area (204) is positioned in rectus abdominis and tissues, and the non-drug permeating area (203) is closer to the surface of the skin relative to the drug permeating area (204) so as to keep the skin dry.

2. The tunneling infection prevention peritoneal dialysis insertion tube of claim 1, wherein: the upper surface of flexible silica gel dish (3) still is equipped with a liquid sampling pipe (304), and this liquid sampling pipe (304) are through another pore and stock solution chamber (202) top intercommunication in flexible silica gel dish (3), extract the liquid in stock solution chamber (202) through external sampling tool and carry out the assay.

3. The tunneling infection prevention peritoneal dialysis insertion tube of claim 1, wherein: the drug infiltration tube (2) is arranged around the outer wall of an expandable sleeve (5), a dialysate passage for communicating the joint tube (4) with the inner tube body (1) is formed inside the expandable sleeve (5), the top of the expandable sleeve (5) is connected with the lower surface of the flexible silica gel disc (3), an inlet tube (303) arranged on the upper surface of the flexible silica gel disc (3) is communicated with the expandable sleeve (5) through a pore passage inside the expandable sleeve, so that expansion or contraction of the expandable sleeve (5) is controlled, and after the expandable sleeve (5) is expanded, the outer side wall of the drug infiltration tube (2) protrudes out of the outer side wall of the inner tube body (1), so that the drug infiltration tube (2) in operation is conveniently connected and fixed with rectus abdominis and tissues; when the expandable sleeve (5) is contracted, the middle lower part of the outer side wall of the drug infiltration tube (2) is retracted to be lower than the outer side wall of the inner tube body (1), so that the extraction of the post-operation implanted tube is facilitated.

4. The tunneling infection prevention peritoneal dialysis insertion tube of claim 3, wherein: the inflatable sleeve (5) comprises a cylindrical frame (501), the longitudinal section of the cylindrical frame (501) is in a shape of a' with an opening at the outer side, an elastic skin (503) made of medical silica gel is arranged on the opening at the outer side, so that a closed inflatable cavity (504) is formed in the cylindrical frame (501), and the top of the inflatable cavity (504) is communicated with an inlet pipe (303) on the upper surface of the inflatable cavity through a pore channel in the flexible silica gel disc (3); the inner diameter of the cylindrical frame (501) is smaller than that of the inner pipe body (1), so that a clamping table (502) protruding inwards is formed at the joint of the two.

5. The tunneling infection prevention peritoneal dialysis insertion tube of claim 1, wherein: the lower part of the joint pipe (4) is provided with a corrugated section (401) so that the joint pipe (4) has flexibility at the corrugated section (401).

6. The tunneling infection prevention peritoneal dialysis insertion tube of claim 1, wherein: the bottom end of the inner tube body (1) is provided with a hemispherical expansion part (101), the expansion part (101) is of a hollow structure, and the center of the expansion part is provided with a dialysate outlet (102).

7. The tunneling infection prevention peritoneal dialysis insertion tube of claim 1, wherein: the inner diameter of the drug seepage tube (2) is smaller than that of the inner tube body (1), so that a clamping table (502) protruding inwards is formed at the joint of the drug seepage tube and the inner tube body, a sealing plug (6) is arranged in the joint tube (4), the sealing plug (6) is in threaded connection with the end part of the joint tube (4), an expansion air bag (605) is arranged in the sealing plug (6), and the expansion air bag (605) is matched with the clamping table (502) after being inflated and expanded to cut off a dialysate channel in the inner tube body (1).

8. The tunneling infection prevention peritoneal dialysis insertion tube of claim 7, wherein: the sealing plug (6) comprises a plug cover (601) covering the end part of the joint pipe (4), an outer connecting cylinder (606) extending downwards is arranged around the edge of the plug cover (601), the inner wall of the outer connecting cylinder (606) is in threaded fit connection with the outer wall of the end part of the joint pipe (4), a connecting rod (604) extending downwards is arranged in the center of the plug cover (601), after the plug cover (601) is in threaded connection with the joint pipe (4), the bottom end of the connecting rod (604) extends to the clamping table (502), and an expansion air bag (605) is arranged at the bottom end of the connecting rod (604) and is filled with or pumped out air through an air hole in the connecting rod (604).

9. The tunneling infection prevention peritoneal dialysis insertion tube of claim 7, wherein: the center of the sealing plug (6) is provided with an inner connecting tube (602) extending downwards, the top of the inner connecting tube (602) is opened, so that an inflation area (603) is formed, the bottom of the inflation area (603) is provided with a hollow connecting rod (604), when the end of the connector pipe (4) is sealed by the sealing plug (6), the bottom end of the connecting rod (604) extends to the clamping table (502), the expansion airbag (605) is arranged at the bottom end of the connecting rod (604), a self-inflating assembly (7) can be inserted or pulled out from the inflation area (603), and inflation expansion or exhaust contraction of the expansion airbag (605) is realized by inserting or pulling out the self-inflating assembly (7).

10. The tunneling infection prevention peritoneal dialysis insertion tube of claim 9, wherein: the self-inflating assembly (7) comprises a plugging plate (701) and a rubber plug (704) arranged below the plugging plate (701) through a push-pull rod (703), wherein the rubber plug (704) is inserted into the inner connecting cylinder (602) and then is matched with the inner wall of the inner connecting cylinder (602), and air in the inflating area (603) is extruded downwards to enter the inflating air bag (605), so that the inflating air bag (602) is inflated and a dialysate passage in the inner pipe body (1) is cut off.

Images