CN116392705A

CN116392705A - Fixed-free wound drainage tube for total knee arthroplasty

Info

Publication number: CN116392705A
Application number: CN202310431326.9A
Authority: CN
Inventors: 翁习生; 王英杰; 沈松坡
Original assignee: Peking Union Medical College Hospital Chinese Academy of Medical Sciences
Current assignee: Peking Union Medical College Hospital Chinese Academy of Medical Sciences
Priority date: 2023-04-21
Filing date: 2023-04-21
Publication date: 2023-07-07
Anticipated expiration: 2043-04-21
Also published as: CN116392705B

Abstract

The invention discloses a fixing-free wound drainage tube for total knee arthroplasty, which comprises: the drainage component comprises a suction end and a hose; one end of the hose is inserted into the suction end and fixedly connected with the suction end; the suction end is made of metal materials, so that the hose is prevented from being mistakenly sewn when the joint capsule and the subcutaneous tissue are sewn; the fixed component is arranged in the direction that the suction end is far away from the patient, and the hose passes through the fixed component and then enters the suction end; the fixing component comprises a fixing tube, an injection tube and a balloon; the fixed pipe is fixedly connected with the suction end; the injection tube and the saccule are respectively arranged at two ends of the fixed tube; a cavity is arranged in the fixing tube, so that the injection tube is communicated with the saccule; the suction assembly is arranged at one end of the hose, which is far away from the suction end; the suction assembly is communicated with the hose and used for collecting liquid flowing out through the hose.

Description

Fixed-free wound drainage tube for total knee arthroplasty

Technical Field

The invention belongs to the technical field of medical instruments, and particularly relates to a fixing-free wound drainage tube for total knee arthroplasty.

Background

Total knee arthroplasty is an effective means of treating end-stage knee osteoarthritis, and is one of the most successful procedures in the 20 th century. Because the operation wound surface is larger, bleeding is more during operation and after operation, most surgeons can keep a drainage tube in the joint cavity after the operation is finished, and the blood, tissue fluid and the like which are continuously oozed out of the operation wound surface are discharged out of the body through the drainage tube, so that the intra-articular hematoma and joint swelling and subcutaneous blood stasis caused by the intra-articular hematoma are relieved. However, when using a drainage tube, the following drawbacks exist:

a conventional drainage tube is usually fixed at the knee joint by using a suture method, so that the drainage tube is prevented from falling off during the drainage process. Although the drainage tube can be fixed by the method, the drainage tube can be taken out only by secondary operation when the drainage tube is removed, so that the recovery time of a patient is prolonged. Two surgeries also increase the risk of infection for the patient.

The invention aims at the problems and provides a fixing-free wound drainage tube for total knee arthroplasty.

Disclosure of Invention

In order to overcome the problems in the background art, the invention provides a fixing-free wound drainage tube for total knee arthroplasty.

A fixation-free total knee arthroplasty wound drainage tube comprising:

the drainage component comprises a suction end and a hose; one end of the hose is inserted into the suction end and fixedly connected with the suction end; the suction end is made of metal materials, so that the hose is prevented from being mistakenly sewn when the joint capsule and the subcutaneous tissue are sewn;

the fixed component is arranged in the direction that the suction end is far away from the patient, and the hose passes through the fixed component and then enters the suction end; the fixing component comprises a fixing tube, an injection tube and a balloon; the fixed pipe is fixedly connected with the suction end; the injection tube and the saccule are respectively arranged at two ends of the fixed tube; a cavity is arranged in the fixing tube, so that the injection tube is communicated with the saccule;

the suction assembly is arranged at one end of the hose, which is far away from the suction end; the suction assembly is communicated with the hose and used for collecting liquid flowing out through the hose.

Further, the suction end comprises two or more protection units and a head end; adjacent protection units are spliced with each other; the head end is spliced with the protection unit;

preferably, the protection unit is made of a metal material.

Further, the inner side wall of the head end is fixedly connected with the outer side wall of the hose;

preferably, the minimum inner diameter of the protection unit is larger than the outer diameter of the hose;

preferably, the minimum inside diameter of the head end is greater than the outside diameter of the hose.

Further, a drainage end is arranged at one end of the fixing component far away from the suction end; the hose penetrates through the drainage end and then is communicated with the suction assembly; the drainage end comprises two or more protection units and a connection structure; adjacent protection units are spliced with each other; the connecting structure is arranged at one end of the protecting unit far away from the suction end.

Further, one end of the connecting structure is detachably connected with the suction assembly, and the other end of the connecting structure is spliced with the protection unit; the inner side wall of the connecting structure is fixedly connected with the outer side wall of the hose;

preferably, the minimum inner diameter of the connection structure is larger than the outer diameter of the hose.

Further, the protection unit comprises a contraction end and an expansion end; the contraction end and the expansion end are integrally connected; the outer diameter of the contracted end is smaller than the inner diameter of the expanded end;

preferably, a first locking ring is arranged at one end of the contraction end far from the expansion end; a second locking ring is arranged at one end of the expansion end far away from the contraction end; the outer diameter of the first locking ring is greater than the inner diameter of the second locking ring.

Further, the outer diameter of the first locking ring is greater than the outer diameter of the contracting end;

preferably, the second locking ring has an inner diameter smaller than the inner diameter of the expansion end.

Further, the fixed tube comprises an outer sleeve and an inner sleeve; the inner sleeve is arranged inside the outer sleeve; a cavity is arranged between the outer sleeve and the inner sleeve, so that the injection tube is communicated with the saccule;

preferably; a first fixed connection end is arranged at one end of the inner sleeve, which faces the suction end; the first fixed connection end is connected with the suction end;

preferably, the first fixed connection end is provided with a third locking ring at an end far away from the inner sleeve.

Further, the outer diameter of the third locking ring is smaller than the inner diameter of the expansion end; the outer diameter of the third locking ring is larger than the inner diameter of the second locking ring;

alternatively, the inner diameter of the third locking ring is greater than the outer diameter of the shrink end; the outer diameter of the first locking ring is greater than the inner diameter of the third locking ring.

Further, the suction assembly comprises a negative pressure drainage balloon and a drainage bottle; one end of the negative pressure drainage saccule is connected with the drainage bottle, and the other end of the negative pressure drainage saccule is detachably connected with the drainage assembly;

preferably; the negative pressure drainage saccule is in threaded connection with the drainage component;

preferably, the negative pressure drainage saccule is communicated with the hose.

The invention has the beneficial effects that: the special drainage tube is suitable for total knee arthroplasty, can be firmly fixed at the knee joint by means of the fixing component, and can drain continuously exuded blood, tissue fluid and other liquids in a wound surface after operation out of the body through the drainage component. The drainage component and the fixing component are both made of metal shells, so that the drainage component and the fixing component are prevented from being broken and remaining in the body and needing to be taken out by secondary operation when the drainage tube is pulled out due to false suture when the joint capsule and subcutaneous tissue are sutured.

Drawings

FIG. 1 is a schematic view showing the structure of a drainage tube embodying the present invention in a conventional state;

FIG. 2 is a schematic view showing the structure of a drainage tube embodying the present invention in a diastole state;

FIG. 3 is a schematic illustration of the connection of a drainage assembly to a fixation assembly embodying the present invention;

FIG. 4 is a cross-sectional view of a drainage and fixation assembly embodying the present invention;

FIG. 5 is a schematic structural view of a fastening assembly embodying the present invention;

FIG. 6 is a cross-sectional view of a securing assembly embodying the present invention;

fig. 7 is a schematic structural view of a protection unit embodying the present invention;

fig. 8 is a cross-sectional view of a protection unit embodying the present invention;

FIG. 9 is a schematic diagram of a method of connecting adjacent protection units to implement the present invention;

FIG. 10 is a schematic diagram of a connection method between a first fixed connection terminal and a protection unit for implementing the present invention;

FIG. 11 is a schematic diagram of a connection method between a second fixed connection terminal and a protection unit for implementing the present invention;

FIG. 12 is a schematic view of the direction of fluid flow when inflating a balloon embodying the present invention;

FIG. 13 is a cross-sectional view of a securing assembly embodying the present invention in an expanded state;

in the figure, 1, a drainage assembly; 2. a fixing assembly; 3. a suction assembly; 4. a protection unit; 11. a suction end; 12. a drainage end; 13. a hose; 14. a connection structure; 21. a fixed tube; 22. an injection tube; 23. a balloon; 31. a negative pressure drainage balloon; 32. a drainage bottle; 41. a constricted end; 42. an expansion end; 211. an outer sleeve; 212. a first fixed connection end; 213. the second fixed connecting end; 214. an inner sleeve.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The invention may be embodied or practiced in other different specific embodiments and features from the following examples and examples may be combined with one another without departing from the spirit or scope of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Example 1

A non-immobilization total knee arthroplasty wound drainage tube as shown in figures 1-13 comprising:

a drainage assembly 1 comprising a suction end 11 and a hose 13; one end of the hose 13 is inserted into the suction end 11 and fixedly connected with the suction end 11; the suction end 11 is made of metal material, so that the hose 13 is prevented from being mistakenly sutured when the joint capsule and the subcutaneous tissue are sutured;

a fixed component 2 arranged at the suction end 11 in a direction away from the patient, and a hose 13 passes through the fixed component 2 and enters the suction end 11; the fixing assembly 2 comprises a fixing tube 21, an injection tube 22 and a balloon 23; the fixed tube 21 is fixedly connected with the suction end 11; the injection tube 22 and the balloon 23 are respectively arranged at two ends of the fixed tube 21; the inside of the fixing tube 21 is provided with a cavity so that the injection tube 22 is communicated with the balloon 23;

a suction unit 3 disposed at an end of the hose 13 remote from the suction end 11; the suction unit 3 is connected to the hose 13, and collects the liquid flowing out through the hose 13.

When the surgical suture device is used, one ends of the suction end 11 and the hose 13 far away from the fixing component 2 are inserted into the joint cavity and aligned with the postoperative wound surface, the joint cavity and subcutaneous tissues are sutured, the suction end 11 is made of a metal material which is kept solid at normal temperature, and the suction end 11 is wrapped outside the hose 13, so that the hose 13 is not sutured by mistake in the process of suturing the joint cavity and the subcutaneous tissues, and the hose 13 is not broken when the hose 13 is pulled out, remains in the body and needs to be taken out by a secondary operation.

The fixation assembly 2 is then placed adjacent to and in suturing with the patient's skin, maintaining the balloon 23 inside the patient's skin and maintaining the balloon 23 in a inflated state. The fixing tube 21 is made of metal or hard polymer material which keeps solid state at normal temperature, so that the fixing tube 21 is prevented from being pierced when being sewn to sew the fixing assembly 2 by mistake, and the fixing assembly 2 cannot be pulled out, and needs to be taken out by secondary operation.

The balloon 23 is inflated by injecting a liquid or gas filler into the balloon 23 through the injection tube 22, and the inflated balloon 23 is placed inside the skin of the patient and then the skin of the patient is sutured. At this time, the fixing component 2 cannot slide out through the skin of the patient under the action of the filling saccule 23, so that the suction end 11 and the hose 13 are prevented from being separated from the body of the patient, and the suction component 3 can discharge the blood, tissue fluid and other liquids continuously oozed out of the wound surface after operation. When the patient needs to be extubated, the filling material in the balloon 23 is sucked out through the injection tube 22, so that the balloon 23 is contracted, the suction end 11 and the hose 13 can be pulled out of the patient, and the fixing-free total knee arthroplasty wound drainage tube can be removed from the patient without cutting the skin of the patient for secondary operation.

As shown in fig. 4, the suction end 11 includes two or more protection units 4 and a head end (not identified in the figure); adjacent protection units 4 are spliced with each other; the head end is spliced with the protection unit 4. The head end is arranged at one end of the protection unit 4 far away from the fixed component 2, and is aligned with the postoperative wound surface in use.

Gaps exist between adjacent protection units 4, so that the suction end 11 can be bent, and can be more fit to the bone morphology of a patient. The protection unit 4 is made of a metal material which keeps solid at normal temperature, so that in the process of suturing the joint cavity and subcutaneous tissue, the suture needle can not puncture the protection unit 4 and suture the suction end 11 on the joint cavity and the subcutaneous tissue, and the tube drawing can be realized without secondary operation.

Specifically, the inside wall of head end and hose 13 lateral wall fixed connection for when implanting in the patient, the one end of hose 13 can aim at the postoperative surface of a wound, discharges the liquid such as blood, the interstitial fluid that oozes constantly in the postoperative surface of a wound outside the body.

A hose 13 is provided inside the head end and the protection unit 4. The minimum inner diameter of the protection unit 4 is larger than the outer diameter of the hose 13, and the minimum inner diameter of the head end is larger than the outer diameter of the hose 13.

As shown in fig. 7-9, the protection unit 4 includes a contracted end 41 and an expanded end 42; the contraction end 41 is integrally connected with the expansion end 42; the outer diameter of the contracted end 41 is smaller than the inner diameter of the expanded end 42 so that the contracted end 41 can be inserted into the interior of the expanded end 42. When the adjacent contracting ends 41 are inserted into the expanding ends 42, gaps exist between the contracting ends 41 and the expanding ends 42, so that the suction ends 11 can be bent and can be more fit to the bone morphology of a patient.

A first locking ring (not identified) is provided at the end of the contracting end 41 remote from the expanding end 42; a second locking ring (not identified) is provided at the end of the expansion end 42 remote from the contraction end 41; the outer diameter of the first locking ring is greater than the inner diameter of the second locking ring. So that adjacent protection units 4 can be spliced together, and the situation that a plurality of protection units 4 move in a patient body to increase the pain of the patient due to the fact that the suction ends 11 are scattered in the process of using the suction ends 11 is prevented.

Specifically, the outer diameter of the first locking ring is greater than the outer diameter of the contracting end 41; the inner diameter of the second locking ring is smaller than the inner diameter of the expansion end 42. Allowing the contracted end 41 to be inserted into the interior of the expanded end 42.

As shown in fig. 5-6 and 10, the stationary tube 21 includes an outer sleeve 211 and an inner sleeve 214; the inner sleeve 214 is disposed inside the outer sleeve 211; a cavity (not shown) is provided between the outer sleeve 211 and the inner sleeve 214 so that the injection tube 22 is in communication with the balloon 23. After passing through the inner sleeve 214, the hose 13 is connected to the suction end 11, the outer diameter of the hose 13 being smaller than the inner diameter of the inner sleeve 214.

A first fixed connection 212 is provided at the end of the inner sleeve 214 facing the suction end 11; the first fixed connection 212 is connected to the suction end 11. A third locking ring is provided at the end of the first fixed connection end 212 remote from the inner sleeve 214, through which the first fixed connection end 212 is spliced with the protection unit 4.

Specifically, the outer diameter of the third locking ring is smaller than the inner diameter of the expansion end 42; the outer diameter of the third locking ring is larger than the inner diameter of the second locking ring; so that the first fixed connection end 212 can be inserted into the adjacent expansion end 42, and when the first fixed connection end 212 is inserted into the adjacent expansion end 42, a gap exists between the first fixed connection end 212 and the expansion end 42, so that the connection between the fixed tube 21 and the suction end 11 can be bent, and the bone morphology of the patient can be more fitted. The fixing tube 21 and the adjacent protection unit 4 can be spliced together, so that the fixing tube 21 and the suction end 11 are prevented from being separated to enable the suction end 11 to move in the patient body to increase the pain of the patient during the use.

In some embodiments of the present application, the inner diameter of the third locking ring is greater than the outer diameter of the shrink end 41; the outer diameter of the first locking ring is greater than the inner diameter of the third locking ring. So that adjacent contracting ends 41 can be inserted into the first fixed connecting ends 212.

As shown in fig. 2, the suction assembly 3 comprises a negative pressure drainage balloon 31 and a drainage bottle 32; one end of the negative pressure drainage saccule 31 is connected with a drainage bottle 32, and the other end is detachably connected with the drainage component 1.

Specifically, the negative pressure drainage balloon 31 is communicated with the hose 13. The liquid inside the hose 13 is sucked out through the negative pressure drainage balloon 31 and stored inside the drainage bottle 32.

Alternatively, the negative pressure drainage balloon 31 is threadably connected to the drainage assembly 1, so that the suction assembly 3 can be quickly connected to the drainage assembly 1 or removed from the drainage assembly 1.

Example 2

As shown in fig. 1 to 11, this embodiment is different from embodiment 1 in that:

a drainage end 12 is arranged at one end of the fixed component 2 far away from the suction end 11; the hose 13 penetrates through the drainage end 12 and then is communicated with the suction assembly 3; the drainage end 12 comprises two or more protection units 4 and a connecting structure 14; adjacent protection units 4 are spliced with each other; the connection structure 14 is provided at an end of the protection unit 4 remote from the suction end 11. One end of the connecting structure 14 is detachably connected with the suction assembly 3, and the other end is spliced with the protection unit 4; the inner side wall of the connecting structure 14 is fixedly connected with the outer side wall of the hose 13. The hose 13 is connected with the suction assembly 3 through the connection structure 14 after passing through the drainage end 12, so that the suction assembly 3 can be quickly connected with the drainage assembly 1 or removed from the drainage assembly 1.

The minimum inner diameter of the connecting structure 14 is larger than the outer diameter of the hose 13. So that the connection structure 14 does not squeeze the hose 13 to change the pipe diameter of the hose 13.

Specifically, a connecting bracket is disposed on a side of the connecting structure 14 away from the suction assembly 3, and the connecting bracket is spliced with the adjacent protection unit 4.

A fifth locking ring is provided at one end of the connection bracket remote from the connection structure 14, and the connection bracket is spliced with the protection unit 4 through the fifth locking ring.

Optionally, the outer diameter of the connecting stent is smaller than the inner diameter of the expanded end 42; the outer diameter of the fifth locking ring is larger than the inner diameter of the second locking ring; allowing the connection bracket to be inserted into the interior of the expansion end 42.

Alternatively, the inner diameter of the connecting bracket is greater than the outer diameter of the contracted end 41 and the outer diameter of the first locking ring is greater than the inner diameter of the fifth locking ring. Allowing the constricted end 41 to be inserted into the interior of the connecting bracket.

A second fixed connection end 213 is arranged at one end of the inner sleeve 214 facing the drainage end 12; the second fixed connection 213 is connected to the drainage end 12. A fourth locking ring is arranged at the end of the second fixed connection end 213 remote from the inner sleeve 214, and the second fixed connection end 213 is spliced with the protection unit 4 through the fourth locking ring.

Specifically, the outer diameter of the fourth locking ring is smaller than the inner diameter of the expansion end 42; the outer diameter of the fourth locking ring is larger than the inner diameter of the second locking ring; so that the second fixed connection 213 can be inserted into the adjacent expansion end 42. The fixing tube 21 and the adjacent protection units 4 can be spliced together, so that the drainage tube is prevented from being thinned to reduce the drainage effect due to the fact that the fixing tube 21 is separated from the drainage end 12 to stretch the drainage tube in the use process.

In some embodiments of the present application, the inner diameter of the fourth locking ring is greater than the outer diameter of the shrink end 41; the outer diameter of the first locking ring is greater than the inner diameter of the fourth locking ring. So that adjacent constricted ends 41 can be inserted into the second fixed connection ends 213.

The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present invention, and are not intended to limit the invention, and that various changes and modifications may be made therein without departing from the spirit and scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A non-immobilization total knee arthroplasty wound drainage tube comprising:

2. The immobilization-free total knee arthroplasty wound drain tube of claim 1 wherein the suction end comprises two or more protection units and a head end; adjacent protection units are spliced with each other; the head end is spliced with the protection unit;

preferably, the protection unit is made of a metal material.

3. The non-immobilization total knee arthroplasty wound drainage tube of claim 2 wherein the inner sidewall of the head end is fixedly attached to the outer sidewall of the hose;

4. A non-immobilization total knee arthroplasty wound drain tube according to claim 1 wherein a drainage end is provided at an end of the immobilization assembly remote from the suction end; the hose penetrates through the drainage end and then is communicated with the suction assembly; the drainage end comprises two or more protection units and a connection structure; adjacent protection units are spliced with each other; the connecting structure is arranged at one end of the protecting unit far away from the suction end.

5. The non-immobilization total knee arthroplasty wound drainage tube of claim 4 wherein one end of the connection structure is detachably connected to the suction assembly and the other end is spliced to the protection unit;

the inner side wall of the connecting structure is fixedly connected with the outer side wall of the hose;

6. A non-immobilization total knee arthroplasty wound drain tube according to any of claims 2-5 wherein said protection unit comprises a contracted end and an expanded end; the contraction end and the expansion end are integrally connected; the outer diameter of the contracted end is smaller than the inner diameter of the expanded end;

7. A non-immobilization total knee arthroplasty wound drain tube according to claim 6 wherein the external diameter of the first locking ring is greater than the external diameter of the collapsed end;

8. The immobilization-free total knee arthroplasty wound drainage tube of claim 6 wherein the immobilization tube comprises an outer sleeve and an inner sleeve; the inner sleeve is arranged inside the outer sleeve; a cavity is arranged between the outer sleeve and the inner sleeve, so that the injection tube is communicated with the saccule;

9. A non-immobilization total knee arthroplasty wound drain tube according to claim 8 wherein the third locking ring has an outer diameter less than an inner diameter of the expansion end; the outer diameter of the third locking ring is larger than the inner diameter of the second locking ring;

10. The immobilization-free total knee arthroplasty wound drainage tube of claim 1 wherein the suction assembly comprises a negative pressure drainage balloon and a drainage bottle; one end of the negative pressure drainage saccule is connected with the drainage bottle, and the other end of the negative pressure drainage saccule is detachably connected with the drainage assembly;