CN114796640A - Easily extract and prevent remaining tissue hydrops drainage system - Google Patents

Abstract

The invention relates to an easily-pulled residual-tissue-effusion-preventing drainage system which comprises a drainage tube, a drainage head and a foaming sponge wrapped outside the drainage head, wherein the foaming sponge is made of high polymer materials through expansion foaming, a shaping net covers the surface of the foaming sponge, the end part of the shaping net is fixed on a section of the drainage tube which is not inserted into the foaming sponge, a high polymer slip film is arranged at the joint of the foaming sponge and the drainage tube, the high polymer slip film is arc-shaped and is wrapped outside the shaping net, the drainage tube is connected with a negative pressure balloon and a drainage bag, and one-way valves are arranged in the drainage tube at two ends of the negative pressure balloon. The drainage head can be conveniently taken out after drainage is finished, meanwhile, the tissue of a drainage cavity is prevented from being damaged, the resistance of pulling out the drainage tube is reduced, residual substances which cannot be absorbed by human tissues are prevented from remaining in the drainage cavity, and the postoperative recovery speed is improved.

Description

Easily extract and prevent remaining tissue hydrops drainage system

The technical field is as follows:

the invention relates to the technical field of medical instruments, in particular to an easily-pulled residual tissue effusion prevention drainage system.

Background art:

drainage after a body cavity operation is an important component of the surgical operation, and liquid such as local tissue effusion, digestive tract liquid, lymph and the like needs to be drained to the outside of a body after the operation. The accumulation of fluid, especially digestive fluid with corrosive action and fluid containing pathogens, which is generated after operation, if the fluid cannot be exactly drained to the outside of the body, can cause serious clinical problems of poor healing of local tissues, infection, local tissue erosive bleeding and the like in local accumulation, and the problems can even cause serious operation complications, cause secondary operation and even death of patients, and the problem of disposing the problems can increase the pain of the patients and occupy a large amount of medical resources. The problem is more serious under the condition of poor healing of digestive tract fistula or anastomotic stoma such as biliary fistula, pancreatic fistula, intestinal fistula and the like. At present, local effusion is mainly drained through a drainage tube clinically, when the method is used, only the to-be-drained liquid in the area directly contacted with the drainage hole of the drainage tube can be efficiently drained to the outside of the body, and the drainage liquid in other areas needs to be naturally drained to the drainage hole area of the drainage tube to be drained to the outside of the body, so that partial digestive tract fistula areas or tissues in the area with poor healing of an anastomotic stoma can not be dried. In addition, the prior drainage tube is easy to be separated from a drainage area, and poor drainage is also easy to be caused by tissue separation. Patent No. ZL202020918225.6 discloses a negative pressure drainage system for body cavity based on non-absorbable fiber woven material, which comprises a balloon with joints at two ends, and each joint is internally provided with a one-way valve structure, one side of the saccule is connected with a drainage main pipe, the tail end of the drainage main pipe is communicated with a plurality of drainage branch pipes, the tail end of each drainage branch pipe is also connected with an inseparable non-absorbable fiber woven material, a drainage bag is connected with a joint at one side of the balloon, the non-absorbable fiber woven material surrounds the surgical anastomotic stoma and other parts, the liquid around the anastomotic stoma can be sucked into the non-absorbable fiber woven material due to the capillary phenomenon, the drainage main pipe can lead the drainage liquid in the non-absorbable fiber woven material out of the body through negative pressure, thereby can guarantee the anastomotic stoma is dry, promote the healing of the anastomotic stoma, reduce the infection and bleeding risk that the anastomotic stoma leaks and causes. However, the drainage structure needs to be taken out from the drainage cavity after the drainage is finished, because the drainage cavity can be gradually reduced along with the growth recovery of the affected part, the drainage head in the drainage cavity and the fiber or foam sponge material arranged at the drainage head part can easily tear the healed tissue in the taking-out process, so that the wound is expanded again, and residual substances which can not be absorbed by part of human tissues can be easily left in the drainage cavity, so that the postoperative recovery is slow, and the treatment effect is influenced.

The invention content is as follows:

technical problem to be solved

The invention aims to provide an easily-pulled residual-tissue-effusion-preventing drainage system, which solves the problems that in the prior art, in the taking-out process after drainage is finished, healed tissues are easily torn, the wound is re-enlarged, and partial residual substances which can not be absorbed by human tissues are left in a drainage cavity, so that the postoperative recovery is slow and the treatment effect is influenced.

(II) technical scheme

In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides an easily extract and prevent remaining tissue hydrops drainage system, is in including drainage tube, drainage head and parcel setting the outside foaming sponge of drainage head, the foaming sponge is made by the foaming of porous foaming macromolecular material inflation, the surface covering of foaming sponge has moulding net, moulding net's end fixing is not inserted one section in the foaming sponge on the drainage tube, on the foaming sponge with the drainage tube junction is equipped with the polymer synovial membrane, the polymer synovial membrane is the arc, polymer synovial membrane parcel is in moulding net's the outside, the drainage tube is connected with negative pressure sacculus and drainage bag, negative pressure sacculus both ends all be equipped with the check valve in the drainage tube, overhead a plurality of drainage hole that is equipped with of drainage.

The foaming sponge is used for filling a high-risk area which generates effusion and digestive tract leakage after operation, and can suck drainage fluid into a porous foaming material to keep the high-risk area dry due to the siphoning effect of a porous structure of the foaming sponge, so that tissue healing is promoted, on one hand, the risk of leakage is reduced, on the other hand, the quick healing of the digestive tract leakage can be promoted after leakage occurs, and the risk of local infection and bleeding is reduced, the drainage head is used for sucking out the drainage fluid sucked into the foaming sponge, the drainage fluid is sucked into the drainage bag through negative pressure suction generated by the negative pressure balloon, the one-way valve is used for controlling the flow direction of the drainage fluid and ensuring that the drainage fluid flows into the drainage bag in one way, the shaping net is used for limiting the expansion shape of the foaming sponge and ensuring the integrity of the foaming sponge in the process of pulling out the foaming sponge after drainage, prevent the foaming sponge is cracked under the extrusion of tissue and is left the difficult absorptive residue in the drainage intracavity, the polymer synovial membrane is used for pulling out the drainage head with the smooth and easy of pulling out is guaranteed to the in-process drag reduction of foaming sponge to reduce the power of tearing to the tissue, avoid enlarging the wound, improve postoperative recovery speed.

Further, the outside of drainage tube is equipped with solid fixed ring and slip ring, gu be equipped with the damping chamber in the fixed ring, be equipped with piston and piston rod in the damping chamber, the piston with be connected with the spring between the inner wall in damping chamber, the piston rod passes the spring with the piston is connected, be equipped with the intercommunication in the piston both sides the orifice in damping chamber, the damping intracavity is filled has damping liquid, one side of slip ring with moulding net is connected, the opposite side of slip ring with the piston rod is connected. The sliding ring is used for sliding along the drainage tube to control the expansion size of the shaping net, so that medical personnel can place the foaming sponge with proper size into the drainage cavity according to the size of the drainage cavity, the piston is arranged in the damping cavity, the shaping net slowly moves under the thrust of the spring and the resistance of the damping liquid, the expansion degree of the shaping net is gradually reduced along with the time, can ensure that the foaming sponge is gradually compressed and reduced by the shaping net along with the growth recovery of tissues and the reduction of a drainage cavity, after the drainage is finished, the volume of the foaming sponge is reduced to be equivalent to the size of the recovered drainage cavity, the tissue is convenient to pull out and the damage to the tissue is reduced, the throttling hole is used for communicating the damping cavities at two ends of the piston, so that the damping liquid flows from one side of the piston to the other side when the piston moves slowly.

Furthermore, a one-way damping valve is arranged in the throttling hole and used for ensuring that the opening degree of the one-way damping valve is changed along with the pressure change of one side of the damping cavity in the process that the piston moves slowly, and the moving speed of the piston is ensured to be stable. When the sliding ring is pulled, the one-way damping valve does not work, and the damping liquid is enabled to rapidly flow from one side, with the piston rod, of the damping cavity to one side without the piston rod.

Furthermore, the one-way damping valve comprises a valve plate rotationally connected with the inner wall of the throttling hole, and a compression spring is connected between the valve plate and the inner wall of the throttling hole. Along with the movement of the piston, the valve plate overcomes the force of the compression spring to rotate along with the pressure change of one side of the damping cavity, the flow area of the throttling hole is enlarged, and the stable movement of the piston is ensured.

Furthermore, the piston rod is provided with a through hole communicated with the throttling hole, and the through hole is communicated with the damping cavity. The through flow hole is used for ensuring the communication of the damping cavities at the two ends of the piston.

Furthermore, the shaping net is made of a high polymer plastic material including but not limited to polypropylene or nylon, so that the shaping net is good in elasticity and plasticity and convenient to control deformation.

Furthermore, the polymer synovial membrane is a polytetrafluoroethylene or PET film, so that the roughness is low, the surface is smooth, the friction force between the polymer synovial membrane and tissues is effectively reduced, and the tearing is avoided.

Furthermore, the outside of sliding ring is equipped with anti-skidding ring, the sliding ring with be equipped with the elastic washer on the drainage tube contact surface, anti-skidding ring is used for making things convenient for medical personnel manual pulling the sliding ring moves along the drainage tube, the elastic washer guarantees that sufficient frictional force has between sliding ring and the drainage tube.

Furthermore, a section of the drainage tube between the sliding ring and the fixing ring is provided with time scales, the larger the distance between the sliding ring and the fixing ring is, the larger the degree of the plastic net propped open by the sliding ring is, namely, the larger the drainage cavity which needs to be drained is, the longer the wound recovery time is, the approximate wound recovery time which changes along with the change of the distance between the sliding ring and the fixing ring is marked on the time scales, so that the drainage tube can be conveniently and visually observed by medical personnel, and the drainage tube can be conveniently pulled out according to the wound recovery condition.

The invention provides a use method of an easily-pulled residual-tissue-effusion-preventing drainage system, which comprises the following steps:

s1, inserting the drainage head with the shaping net and the foaming sponge into a drainage cavity, manually controlling the sliding ring to move along the drainage tube, expanding the shaping net and the foaming sponge to fill the drainage cavity, and pinching the negative pressure balloon to generate negative pressure suction to enable drainage liquid to enter the drainage bag through the drainage head;

s2, along with the drainage, the sliding ring slowly moves towards the direction of the fixing ring, the shaping net and the foaming sponge are gradually reduced, and the drainage bag is taken down after the drainage is confirmed to be finished by observing the time scale;

s3, pulling the drainage tube to pull out the drainage head, the shaping net and the foaming sponge which are positioned in the drainage cavity, and the high-molecular sliding film positioned at the joint of the foaming sponge and the drainage tube reduces the pulling resistance to complete the pulling process.

(III) advantageous effects

Compared with the prior art, the invention has the following beneficial effects: through setting up the foaming sponge of parcel in drainage head outside, the foaming sponge is made by porous foaming macromolecular material inflation foaming, the moulding net of surface covering of foaming sponge, set up curved polymer synovial membrane with the drainage tube junction on the foaming sponge, and the parcel is in the outside of moulding net, can be in keeping the drying of high risk region with drainage liquid suction, when promoting the tissue healing, the integrality of foaming sponge is guaranteed to the in-process of drawing out the foaming sponge at the drainage end, prevent that the foaming sponge from smashing under the extrusion of tissue and leaving difficult absorptive residue in the drainage intracavity, and reduce the resistance at the in-process of pulling out drainage head and foaming sponge, guarantee the smooth and easy of pulling out, reduce the power of tearing to the tissue, avoid enlarging the wound, effectively improve postoperative recovery rate.

Description of the drawings:

in order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below.

FIG. 1 is a front view of the drainage head of the easy-to-pull residual-tissue-effusion prevention drainage system according to the embodiment of the invention;

FIG. 2 is a sectional view of the drainage head of the easy-to-pull residual-tissue-effusion prevention drainage system according to the embodiment of the invention;

FIG. 3 is an overall cross-sectional view of an easily extractable residual-free effusion drainage system in accordance with an embodiment of the present invention;

FIG. 4 is a front view of the drainage head of the drainage system for easily drawing out residual effusion in accordance with the second embodiment of the present invention;

FIG. 5 is a sectional view of the drainage head of the easy-to-pull residual-tissue-effusion prevention drainage system according to the second embodiment of the invention;

FIG. 6 is an overall sectional view of the easy-to-pull residual-tissue-effusion-prevention drainage system according to the second embodiment of the invention;

FIG. 7 is a partial cross-sectional view of the portion of the retaining ring of the easy-to-remove anti-residual effusion drainage system in accordance with the second embodiment of the present invention;

FIG. 8 is a partial cross-sectional view of the front end of the drainage head of the easily pulled-out residual-tissue-effusion-preventing drainage system according to one or both embodiments of the present invention;

in the figure: 1. a drainage tube; 2. a drainage head; 3. foaming sponge; 4. shaping nets; 5. a polymer slip film; 6. a negative pressure balloon; 7. a drainage bag; 8. a one-way valve; 9. a drainage hole; 10. a fixing ring; 11. a slip ring; 12. a damping chamber; 13. a piston; 14. a piston rod; 15. a spring; 16. an orifice; 17. damping fluid; 18. a one-way damping valve; 181. a valve plate; 182. a compression spring; 19. a through-flow aperture; 20. an anti-slip ring; 21. an elastic washer; 22. time scale

The specific implementation mode is as follows:

the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Example one

The easily-pulled residual-tissue-effusion-preventing drainage system comprises a drainage tube 1, a drainage head 2 and a foaming sponge 3 wrapped outside the drainage head 2, wherein the foaming sponge 3 is made of a porous foaming high polymer material through expansion foaming, and the material and parameters of the foaming sponge 3 are determined according to the histocompatibility and physical properties. Taking PVA foaming sponge as an example, the apparent density can be adjusted to about 0.06g/cm3, the pore diameter is adjusted to less than 1200 μm, the surface of the foaming sponge 3 is covered with a shaping net 4, the end part of the shaping net 4 is fixed on a section of drainage tube 2 which is not inserted into the foaming sponge 3, a drainage head 2 is inserted into the foaming sponge 3, the drainage tube 1 and the foaming sponge 3 are fixed, the fixing method can be selected from but not limited to adhesive bonding, suture sewing and the like, a macromolecule slip film 5 is arranged at the joint of the foaming sponge 3 and the drainage tube 1, the macromolecule slip film 5 is arc-shaped, the macromolecule slip film 5 is wrapped at the outer side of the shaping net 4 and the outer side of the drainage tube 1, the drainage tube 1 is connected with a negative pressure balloon 6 and a drainage bag 7, one-way valves 8 are arranged in the drainage tubes 1 at the two ends of the negative pressure balloon 6, and a plurality of drainage holes 9 are arranged on the drainage head 2.

Preferably, the shaping net 4 is made of a high polymer plastic material including, but not limited to, polypropylene or nylon, and has good elasticity and plasticity, and deformation can be conveniently controlled.

Preferably, the polymer slip film 5 is a polytetrafluoroethylene or PET film, has low roughness and smooth surface, effectively reduces the friction force with tissues and avoids tearing.

The use method of the drainage system capable of being pulled out easily and preventing residual tissue effusion in the embodiment is as follows:

inserting the drainage head 2 with the shaping net 4 and the foaming sponge 3 into the drainage cavity, expanding and filling the shaping net 4 and the foaming sponge 3 into the drainage cavity, and pinching the negative pressure balloon 6 to generate negative pressure suction force to enable drainage liquid to enter the drainage bag 7 through the drainage head 2; the drainage bag 7 is taken down after the drainage is finished, the drainage tube 1 is pulled to pull out the drainage head 2, the shaping net 4 and the foaming sponge 3 which are positioned in the drainage cavity, the high polymer sliding film 5 at the joint of the foaming sponge 3 and the drainage tube 1 reduces the pulling resistance, and the pulling process is completed.

Example two

The easily-pulled residual-tissue-effusion-preventing drainage system comprises a drainage tube 1, a drainage head 2 and a foaming sponge 3 wrapped outside the drainage head 2, wherein the foaming sponge 3 is made of a porous foaming high polymer material through expansion foaming, and the material and parameters of the foaming sponge 3 are determined according to the histocompatibility and physical properties. Taking PVA foaming sponge as an example, the apparent density can be adjusted to about 0.06g/cm3, the pore diameter is adjusted to less than 1200 μm, the surface of the foaming sponge 3 is covered with a shaping net 4, the end part of the shaping net 4 is fixed on a section of drainage tube 1 which is not inserted into the foaming sponge 3, a drainage head 2 is inserted into the foaming sponge 3, the drainage tube 1 and the foaming sponge 3 are fixed, the fixing method can be selected from but not limited to adhesive bonding, suture sewing and the like, a macromolecule sliding film 5 is arranged at the joint of the foaming sponge 3 and the drainage tube 1, the macromolecule sliding film 5 is arc-shaped, the macromolecule sliding film 5 is wrapped at the outer side of the shaping net 4 and the outer side of the drainage tube 1, the drainage tube 1 is connected with a negative pressure balloon 6 and a drainage bag 7, one-way valves 8 are arranged in the drainage tubes 2 at the two ends of the negative pressure balloon 6, and a plurality of drainage holes 9 are arranged on the drainage head 2.

Preferably, a fixing ring 10 and a sliding ring 11 are arranged on the outer side of the drainage tube 1, a damping cavity 12 is arranged in the fixing ring 10, a piston 13 and a piston rod 14 are arranged in the damping cavity 12, a spring 15 is connected between the piston 13 and the inner wall of the damping cavity 12, the piston rod 14 penetrates through the spring 15 and is connected with the piston 13, a throttling hole 16 communicated with the damping cavity 12 on the two sides of the piston 13 is arranged in the piston 13, damping liquid 17 is filled in the damping cavity 12, one side of the sliding ring 11 is connected with the shaping net 4, and the other side of the sliding ring 11 is connected with the piston rod 14. Slip ring 11 is used for sliding along drainage tube 1, the inflation size of control moulding net 4, so that medical personnel put into the volume of foaming sponge 3 when drainage chamber according to the size adjustment in drainage chamber, piston 13 is in damping chamber 12, slow movement under the thrust of spring 15 and the resistance effect of damping fluid 17, the inflation degree of moulding net 4 dwindles gradually along with the lapse of time, can guarantee that foaming sponge 3 recovers along with the growth of tissue and the shrink of drainage chamber and is compressed by moulding net 4 and diminishes gradually, the volume of foaming sponge 3 will contract to be equivalent to the size after the drainage chamber recovers after the drainage finishes, reduce the damage to the tissue when conveniently pulling out, orifice 16 is used for communicating damping chamber 12 at piston 13 both ends, so that damping fluid 17 flows to the opposite side from one side of piston 13 when piston 13 slowly moves.

Preferably, a one-way damping valve 18 is arranged in the throttle hole 16, and the one-way damping valve 18 is used for ensuring that the opening degree of the piston 13 changes along with the pressure change at one side of the damping cavity 12 during the slow movement of the piston 13, so as to ensure the stability of the moving speed of the piston 13. When the sliding ring 11 is pulled, the one-way damping valve 18 does not work, and the damping fluid 17 is enabled to rapidly flow from the side with the piston rod 14 in the damping cavity 12 to the side without the piston rod 14.

Preferably, the one-way damper valve 18 includes a valve plate 181 rotatably coupled to an inner wall of the orifice 16, and a compression spring 182 is coupled between the valve plate 181 and the inner wall of the orifice 16. As the piston 13 moves, the valve plate 181 rotates against the force of the compression spring 182 in accordance with the pressure change on the side of the damping chamber 12, and the flow area of the orifice 16 is enlarged to ensure stable movement of the piston 13.

Preferably, the piston rod 14 is provided with a through-flow bore 19 in communication with the orifice 16, the through-flow bore 19 being in communication with the damping chamber 12. The through-flow opening 19 serves to ensure the communication of the damping chamber 12 at both ends of the piston 13.

Preferably, the shaping net 4 is made of a high polymer plastic material including but not limited to polypropylene or nylon, and has good elasticity and plasticity, so that deformation can be conveniently controlled.

Preferably, the polymer slip film 5 is a polytetrafluoroethylene or PET film, has low roughness and smooth surface, effectively reduces the friction force with tissues and avoids tearing.

Preferably, the outer side of the sliding ring 11 is provided with an anti-slip ring 20, the contact surface of the sliding ring 11 and the drainage tube 1 is provided with an elastic washer 21, the anti-slip ring 20 is used for facilitating the medical staff to manually pull the sliding ring 11 to move along the drainage tube 1, and the elastic washer 21 ensures that the sliding ring 11 and the drainage tube 1 have enough friction force.

Preferably, a time scale 22 is arranged on a section of the drainage tube 1 between the sliding ring 11 and the fixing ring 10, the larger the distance between the sliding ring 11 and the fixing ring 10 is, the larger the expanding degree of the shaping net 4 by the sliding ring 11 is, that is, the larger the drainage cavity for drainage is, the longer the wound recovery time is, the approximate wound recovery time which changes along with the change of the distance between the sliding ring 11 and the fixing ring 10 is marked on the time scale 22, so that the medical staff can visually observe the wound recovery time, and can pull out the drainage tube 1 according to the wound recovery condition.

The use method of the drainage system capable of being pulled out easily and preventing residual tissue effusion in the embodiment is as follows:

s1, inserting the drainage head 2 with the shaping net 4 and the foaming sponge 3 into a drainage cavity, manually controlling the sliding ring 11 to move along the drainage tube 1, expanding the shaping net 4 and the foaming sponge 3 to fill the drainage cavity, and pinching the negative pressure balloon 6 to generate negative pressure suction, so that drainage liquid enters the drainage bag 7 through the drainage head 2;

s2, along with the drainage, the sliding ring 11 slowly moves towards the direction of the fixing ring 10, the shaping net 4 and the foaming sponge 3 are gradually reduced, and the drainage bag 7 is taken down after the drainage is confirmed to be finished by observing the time scale 22;

s3, pulling the drainage tube 1 to pull out the drainage head 2, the shaping net 4 and the foaming sponge 3 which are positioned in the drainage cavity, and the polymer sliding film 5 positioned at the joint of the foaming sponge 3 and the drainage tube 1 reduces the pulling resistance to complete the pulling process.

In conclusion, the drainage system capable of being easily pulled out and preventing the residual effusion of the tissue, provided by the invention, solves the problems that in the prior art, in the taking-out process after drainage is finished, the healed tissue is easily torn, the wound is re-enlarged, and part of residual substances which can not be absorbed by the human tissue are left in the drainage cavity, so that the postoperative recovery is slow, and the treatment effect is influenced.

The present invention has been described above by way of example, but the present invention is not limited to the above-described specific embodiments, and any modification or variation made based on the present invention is within the scope of the present invention as claimed.

Claims (9)

1. The utility model provides an easily extract and prevent remaining tissue hydrops drainage system, is in including drainage tube, drainage head and parcel setting the outside foaming sponge of drainage head, the foaming sponge is made its characterized in that by the expanded foam of macromolecular material: the surface covering of foaming sponge has moulding net, moulding net's end fixing is not inserted one section in the foaming sponge on the drainage tube, on the foaming sponge with the drainage tube junction is equipped with the polymer synovial membrane, the polymer synovial membrane is the arc, the polymer synovial membrane parcel is in moulding net's the outside, the drainage tube is connected with negative pressure sacculus and drainage bag, the negative pressure sacculus both ends all be equipped with the check valve in the drainage tube, overhead a plurality of drainage hole that is equipped with of drainage.

2. The easy-to-extract residual-resistant tissue effusion drainage system according to claim 1, characterized in that: the outside of drainage tube is equipped with solid fixed ring and slip ring, gu be equipped with the damping chamber in the fixed ring, be equipped with piston and piston rod in the damping chamber, the piston with be connected with the spring between the inner wall in damping chamber, the piston rod passes the spring with piston connection, be equipped with the intercommunication in the piston both sides the orifice in damping chamber, the damping intracavity is filled there is damping liquid, one side of slip ring with moulding net is connected, the opposite side of slip ring with the piston rod is connected.

3. The easy-to-extract residual-resistant tissue effusion drainage system according to claim 2, characterized in that: and a one-way damping valve is arranged in the throttling hole.

4. The easy-to-extract residual-resistant tissue effusion drainage system according to claim 3, characterized in that: the one-way damping valve comprises a valve plate rotationally connected with the inner wall of the throttling hole, and a compression spring is connected between the valve plate and the inner wall of the throttling hole.

5. The easy-to-extract residual-resistant tissue effusion drainage system according to claim 2, characterized in that: and the piston rod is provided with a through hole communicated with the throttling hole, and the through hole is communicated with the damping cavity.

6. The easy-to-extract residual-resistant tissue effusion drainage system according to claim 1, characterized in that: the shaping net is made of a high polymer plastic material including but not limited to polypropylene or nylon.

7. The easy-to-extract residual-resistant tissue effusion drainage system according to claim 1, characterized in that: the polymer synovial membrane is a polytetrafluoroethylene or PET film.

8. The easy-to-extract residual-resistant tissue effusion drainage system according to claim 2, characterized in that: and an anti-slip ring is arranged on the outer side of the sliding ring, and an elastic gasket is arranged on the contact surface of the sliding ring and the drainage tube.

9. The easy-to-extract residual-resistant tissue effusion drainage system according to claim 2, characterized in that: and a section of the drainage tube between the sliding ring and the fixing ring is provided with time scales.

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