CN114767346B

CN114767346B - Implanted joint liner

Info

Publication number: CN114767346B
Application number: CN202210701611.3A
Authority: CN
Inventors: 董文兴; 侯素华
Original assignee: Beijing Tianxing Bomaidi Medical Equipment Co ltd
Current assignee: Beijing Tianxing Medical Co.,Ltd.
Priority date: 2022-06-21
Filing date: 2022-06-21
Publication date: 2022-08-30
Anticipated expiration: 2042-06-21
Also published as: CN114767346A

Abstract

The present application relates to the field of surgical instruments, in particular to an implantable joint spacer, comprising: the balloon is implanted into a joint and matched with part of the shape of the joint, which is abutted against the balloon, and a thickening layer is integrally formed at the edge of the outer ring of the balloon; a receiving tube for receiving the balloon to implant the balloon within a joint; the operating rod is arranged in the accommodating pipe and used for moving the sacculus out of the accommodating pipe after the accommodating pipe is used for driving the sacculus to the joint; and the filling tube is connected to the balloon, is communicated with the inside of the balloon and is used for introducing a filling medium into the balloon so as to enable the balloon to be expanded to a set state. This application has and makes joint liner can be applicable to multiple different kinds of joint department, promotes the effect of implanted joint liner's suitability.

Description

Implanted joint liner

Technical Field

The present application relates to the field of surgical instruments, and more particularly, to an implantable joint spacer.

Background

The rotator cuff is a general term covering tendon tissues of the subscapularis, supraspinatus, infraspinatus, teres minor and the like in the front, upper and rear parts of the shoulder joint, is positioned below the acromion and the deltoid muscle, and is tightly connected with the joint capsule. The shoulder sleeve has the functions that the humerus head is pulled towards the direction of the glenoid in the upper arm abduction process, the normal fulcrum joint of the humerus head and the glenoid is maintained, the shoulder sleeve damage can weaken and even lose the function, and the upper arm abduction function is seriously influenced; under the condition that the rotator cuff is damaged and torn, because of the structural characteristics of the rotator cuff, the rotator cuff ligament is connected with the bone in a large area, so that the rotator cuff repair is difficult to repair and reconstruct like the knee joint cruciate ligament repair, and at present, the mode of treating the damage is as follows;

during treatment, the air bag is used for limiting treatment, a window is cut on one side of the shoulder, then the tubular implanter is used for implanting the air bag, specifically, the air bag is rolled and then placed into the tubular implanter, then the air bag is placed at the shoulder sleeve fracture part through the implanter, then the air bag is filled with normal saline, the arm is limited through the air bag, and under the condition of subsequent arm action, the arm and the clavicle of the shoulder are isolated through the air bag, so that the problem that the bones are in direct contact and generate friction can be reduced.

With respect to the related art in the above, the inventors found that: in practice, such problems similar to the rotator cuff also exist in hip joints, knee joints, ankle joints, hand joints and the like of a human body, and when a patient has arthritis, hyperosteogeny, diabetes, ventilation and other diseases, the repeated friction of contact surfaces at the joints can bring severe pain to the patient; in this case, although it is necessary to alleviate the problem by using a structure like a balloon, the conventional balloon therapy method is only applicable to the problem of tearing of the rotator cuff, and is difficult to be applied to other joint positions.

Disclosure of Invention

In order to enable the joint spacer to be applicable to a plurality of different kinds of joints, improving the applicability of an implantable joint spacer, the present application provides an implantable joint spacer.

The application provides an implant joint liner adopts following technical scheme:

an implantable joint spacer comprising:

the balloon is implanted into a joint and matched with part of the shape of the joint, which is abutted against the balloon, and a thickening layer is integrally formed at the edge of the outer ring of the balloon;

a receiving tube for receiving the balloon to implant the balloon within a joint;

the operating rod is arranged in the accommodating pipe and used for moving the sacculus out of the accommodating pipe after the accommodating pipe is used for driving the sacculus to the joint;

and the filling tube is connected to the balloon, is communicated with the inside of the balloon and is used for introducing a filling medium into the balloon so as to enable the balloon to be expanded to a set state.

By adopting the technical scheme, the thickening layer is arranged on the periphery of the balloon to shape the balloon, and the shape of the balloon can be adjusted according to different positions used by the balloon in actual production, so that the balloon is matched with bones corresponding to joint positions; in addition, the middle part of the sacculus is thin and keeps high deformation capacity, the sacculus is mainly stressed with pressure, the better pressure bearing effect is achieved, the periphery of the sacculus is thick and keeps high friction resistance, and the service life of the implanted joint liner is prolonged.

Optionally, the edge of the outer ring on the side surface of the balloon abutting against the joint is protruded to form a turnover edge.

By adopting the technical scheme, the side surface of the balloon facing the bone is provided with the concave structure, the bone at the joint is positioned in the concave structure, the problem of deflection of the balloon is reduced, and the stability of the liner implanted into the joint is improved.

Optionally, a connection nozzle communicated with the outside of the balloon is integrally formed inside the balloon;

the connecting nozzle is provided with a sealing plug towards an opening in the balloon, and the sealing plug is connected with the connecting nozzle in a sealing manner;

the filling pipe is inserted in the containing pipe and is in sliding fit with the containing pipe, and the filling pipe is inserted in the connecting nozzle;

the operating rod penetrates through the connecting nozzle, and the end part of the operating rod is connected to the plugging plug.

Through adopting above-mentioned technical scheme, can be comparatively convenient let in the filler to the sacculus, convenient operation, after finishing filling and using shutoff stopper shutoff to connect the mouth, directly take out the filling tube can, promote the convenience of using.

Optionally, the end of the operating rod is inserted into the plugging plug, and the operating rod and the plugging plug are fixedly inserted.

Through adopting above-mentioned technical scheme, after carrying the filler and finishing, directly pulling the action bars and driving the shutoff stopper to insert to the connection mouth in, realize the shutoff to the connection mouth, later continue to exert oneself and pull the action bars, directly pull out the action bars from the shutoff stopper, it is comparatively convenient to use.

Optionally, the operating rod is in threaded connection with the plugging plug.

Through adopting above-mentioned technical scheme, keep the steadiness that action bars and shutoff stopper are connected, in the operation process that the liner was implanted, be difficult to appear the unexpected problem that drops of action bars and shutoff stopper.

Optionally, a limiting structure for limiting the rotation of the plugging plug relative to the connecting nozzle is arranged between the plugging plug and the connecting nozzle.

By adopting the technical scheme, when the operating rod is detached from the plugging plug, the operating rod is pulled to drive the plugging plug to be inserted into the connecting nozzle, and then the operating rod is rotated to unscrew the operating rod from the plugging plug, so that the limitation of the limiting structure on the plugging plug is maintained, the problem of rotation of the plugging plug in the process of rotating the operating rod is reduced, and the smoothness of the unscrewing process of the operating rod from the plugging plug is maintained.

Optionally, the plug is screwed to the connection mouth.

Through adopting above-mentioned technical scheme, the stability of shutoff stopper and connection mouth keeping better leakproofness and connection.

Optionally, the blocking plug includes an integrally formed insertion portion and an abutting portion;

the inserting part is inserted in the connecting nozzle;

the cross-sectional dimension of the abutting part gradually increases in the direction away from the inserting part to form a table-shaped structure, and the end part of the connecting nozzle is provided with an abutting edge which abuts against the abutting part.

Through adopting above-mentioned technical scheme, after accomplishing the implantation, the sacculus is located the joint and mainly bears pressure, and inside filler is to the outside pressure of shutoff stopper orientation sacculus for butt portion keeps and follows to support tightly with the butt, keeps the steadiness that shutoff stopper and connection mouth are connected, simultaneously, can keep sealing up and have better leakproofness between stopping up and the connection mouth.

Optionally, the balloon and the internal structure are both made of degradable materials;

and the filler introduced into the balloon by using the filling tube is physiological saline.

By adopting the technical scheme, the follow-up sacculus is directly degraded, the follow-up operation is not required to be carried out again so as to remove the sacculus from the joint, the complexity of the operation is reduced, and meanwhile, the wound caused to a patient is reduced.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the thickening layer is arranged on the periphery of the balloon to shape the balloon, and the shape of the balloon can be adjusted according to different positions of the balloon during actual production, so that the balloon is matched with bones of corresponding joint positions, and compared with the existing mode of using the balloon, the implanted joint liner can be conveniently adjusted to be expanded to a determined shape, and the applicability of the implanted joint liner is greatly improved; in addition, the middle part of the balloon is thin, keeps high deformation capability, is mainly stressed by pressure, has good pressure bearing effect, the periphery of the balloon is thick, keeps high friction resistance, and prolongs the service life of the implanted joint liner;

2. through the turning edge, a concave structure is formed on the side face, facing the bone, of the balloon, the bone at the joint is located in the concave structure, the problem that the balloon deflects is reduced, and the stability of the liner after the liner is implanted into the joint is improved.

Drawings

FIG. 1 is a schematic view of a pad at a shoulder joint;

FIG. 2 is a schematic cross-sectional view of the structure for showing the thickening layer and the folded edges;

FIG. 3 is a schematic view of a liner at a hip joint;

FIG. 4 is a schematic view of a pad at the knee joint;

FIG. 5 is a schematic cross-sectional view of the connector nozzle and plug construction;

fig. 6 is an enlarged schematic view of a portion a in fig. 5.

Description of reference numerals: 1. a balloon; 11. thickening the layer; 12. folding edges; 13. a connecting nozzle; 14. an abutting edge; 2. receiving a tube; 3. an operating lever; 4. a fill tube; 5. blocking; 51. a plug-in part; 52. an abutment portion.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

Example 1

The embodiment of the application discloses an implantable joint liner, referring to fig. 1 and 2, the joint liner comprises a balloon 1, a containing pipe 2, an operating rod 3 and a filling pipe 4, wherein the balloon 1 is made of flexible materials, the balloon 1 is flat in an expansion state and is placed at a joint position to separate bones at the joint, and the problem of friction of the bones is reduced in the action process of a patient; the accommodating tube 2 is a hollow tubular structure and is used for accommodating the saccule 1 in a stacked state so as to facilitate the implantation of the saccule 1 at the joint position in the body of a patient; the operating rod 3 is arranged in the accommodating tube 2 and is used for pushing the saccule 1 out of the accommodating tube 2; the filling tube 4 is communicated with the inside of the balloon 1 and is used for introducing filler into the balloon 1 so as to enable the balloon 1 to be expanded to a set state, the filling tube 4 is positioned in the accommodating tube 2 and is in sliding fit with the accommodating tube 2, and the operating rod 3 penetrates through the filling tube 4 and is in sliding fit with the filling tube 4.

Referring to fig. 2, the outer ring of the balloon 1 is integrally formed with a thickening layer 11, so that when the balloon 1 is expanded to be flat, the thickness of the outer ring side wall of the balloon 1 is greater than that of the middle side wall, that is, the balloon 1 has a structure with a thin middle part and a thick outer ring.

The balloon 1 has good shaping capacity by arranging the structure of the balloon 1, and the outer ring of the balloon 1 is provided with the thickening layer 11, so that the deformation capacity of the part corresponding to the outer ring of the balloon 1 is poor, namely, in the actual production process, the shape of the outer ring of the balloon 1 can be arranged according to actual needs, and the shape of the balloon 1 expanded to a set state is respectively matched with the shapes of different joint parts such as shoulder joints, hip joints, knee joints, ankle joints and the like; reference is made to fig. 3 and 4, which are schematic illustrations of a pad suitable for use at a hip joint and a knee joint, respectively; in this way, the implantable joint spacer can be made adaptable to different joint sites; the air bag used in the prior scheme is irregular in shape, and after the air bag is inflated by filling materials, the air bag is inflated under the tension of the material of the air bag to form a flat round structure; through setting up the scheme of this application, can promote the suitability of this implanted joint pad greatly.

When implanting this liner to the joint, at first compress sacculus 1 and fill in it and accomodate in the pipe 2, the handheld pipe 2 of accomodating of operating personnel, insert the tip in the joint, later slide operating lever 3 and push out sacculus 1 from accomodating pipe 2, put into the joint with sacculus 1, later use filling tube 4 to inject the filler in sacculus 1 for sacculus 1 inflation is to setting for the state, later will accomodate pipe 2, operating lever 3 and filling tube 4 and take out and to realize the implantation of liner, it is comparatively convenient to operate.

In addition, due to the characteristics of the structure of the human joint, the stress characteristic of the liner in the joint is determined, the part of the balloon 1, which is connected with the bone at the joint, is mainly under pressure, namely the middle part of the balloon 1 is mainly under friction, and the periphery of the side surface, which is connected with the bone at the joint, of the two sides of the balloon 1 is mainly under friction, so that the middle part of the balloon 1 is thinner, the middle part of the balloon 1 has better deformation capacity, and the pressure-bearing capacity of the middle part of the balloon 1 is improved; and the thickness that sets up 1 periphery of sacculus is great, can strengthen the antifriction performance of sacculus 1 to a great extent, through setting up sacculus 1's structure, can prolong the life of sacculus 1 in the at utmost, promotes the treatment effect who uses this joint liner.

Referring to fig. 2, the edge 12 is turned over in the edge protrusion formation of going up periphery along the side of sacculus 1 and bone butt for sacculus 1 forms sunk structure on the bone both sides face, so, implant sacculus 1 to the joint in back, two bones of joint department are located the sunk structure that sacculus 1 both sides correspond respectively, can reduce the phenomenon that the skew appears in the relative bone of sacculus 1, promote the stability after implanting sacculus 1 to the joint in, reduce because of sacculus 1 takes place to shift and leads to the unable normal problem that realizes therapeutic function of this joint liner, improve the treatment of this implanted joint liner.

Referring to fig. 5 and 6, a connecting nozzle 13 is integrally formed inside the balloon 1, the connecting nozzle 13 is communicated with the outside of the balloon 1, a plugging plug 5 for plugging the connecting nozzle 13 is arranged at an opening at one end of the connecting nozzle 13 facing the inside of the balloon 1, the plugging plug 5 is connected with the operating rod 3 to act under the driving of the operating rod 3, and the filling tube 4 is inserted into the connecting nozzle 13 and is in sliding fit with the connecting nozzle 13; the sealing plug 5 comprises a plug part 51 inserted into the connecting nozzle 13 and connected with the operating rod 3 and an abutting part 52 integrally formed on one side of the plug part 51 far away from the operating rod 3; wherein, the plug part 51 is inserted into the connecting nozzle 13 and is connected with the connecting nozzle 13 in a sealing way; the abutting portion 52 has a sectional dimension that gradually increases in a direction away from the socket portion 51; an abutting edge 14 is integrally formed at one end of the connecting nozzle 13 facing the inside of the balloon 1, and the abutting edge 14 abuts against the outer wall of the abutting part 52; the operating rod 3 is inserted into the socket 51 and is connected to the socket 51 by interference fit.

In the process of implanting the liner, the sliding operating rod 3 drives the sealing plug 5 to move so as to jack the balloon 1 into the joint, after the filling of the filler is completed through the filling tube 4, the operating rod 3 drives the sealing plug 5 to move so as to seal the connecting nozzle 13, then the operating rod 3 is directly pulled, the operating rod 3 can be taken down from the sealing plug 5, and then the accommodating tube 2 and the filling tube 4 can be taken down, so that the operation is convenient; in addition, under the state that shutoff stopper 5 blocks up connecting nozzle 13, sacculus 1 is in the pressure-bearing state, inside filler produces pressure to shutoff stopper 5 under the effect of pressure, exert the pressure towards connecting nozzle 13 direction to shutoff stopper 5, simultaneously, through butt 52 and the butt that sets up along 14, can keep the stability that shutoff stopper 5 is connected with connecting nozzle 13, the pressure that sacculus 1 bore leads to shutoff stopper 5 to take place the skew even with shutoff stopper 5 from connecting nozzle 13 problem of extruding relative connecting nozzle 13, promote the stability that shutoff stopper 5 blocked connecting nozzle 13, reduce the problem that follow-up seepage probably appears.

Example 2

The difference between the embodiment and the embodiment 1 is that the balloon 1, the connecting nozzle 13 and the sealing plug 5 are made of degradable materials, and the filling material in the balloon 1 is selected from normal saline; therefore, after the joint liner is implanted into the joint for a period of time, the structure at the joint in the human body forms muscle memory, the balloon 1, the connecting mouth 13, the sealing plug 5 and the like are degraded in the human body, and the problem of wound caused by the persistence of the human body is not easy to occur.

Example 3

The difference between the embodiment and the embodiment 1 is that the operating rod 3 is in threaded connection with the plug 5, so that the stability of the connection between the operating rod 3 and the plug 5 can be maintained, and the detachment of the operating rod 3 and the plug 5 can be realized more conveniently; in addition, in order to ensure the smoothness of detaching the operating rod 3 from the plugging plug 5 by rotating, a limiting structure for limiting the plugging plug 5 to rotate relative to the connecting nozzle 13 is arranged between the plugging plug 5 and the connecting nozzle 13, the limiting structure is of a clamping edge and clamping groove structure, the clamping edge is fixed in the connecting nozzle 13, and the plugging plug 5 is provided with a clamping groove matched with the clamping edge; when driving the blocking plug 5 to be inserted into the connecting nozzle 13 through the operating rod 3, the blocking plug 5 is limited by the clamping edge and the clamping groove, and the smoothness of screwing the blocking plug 5 off by the operating rod 3 is guaranteed to rotate.

Example 4

This embodiment is different from embodiment 1 in that the plugging plug 5 is screwed to the connection mouth 13.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. An implantable joint spacer, comprising:

the balloon (1) is implanted into a joint and matched with the shape of a part of a bone at the joint of the joint, which is abutted against the balloon, a thickening layer (11) is integrally formed at the edge of the outer ring of the balloon (1), and the balloon (1) is of a structure with a thin middle part;

a receiving tube (2) for receiving the balloon (1) for implanting the balloon (1) in a joint;

the operating rod (3) is arranged in the accommodating pipe (2) and used for moving the sacculus (1) out of the accommodating pipe (2) after the accommodating pipe (2) is used for driving the sacculus (1) to a joint;

the filling tube (4) is connected to the balloon (1), is communicated with the interior of the balloon (1), and is used for introducing a filling medium into the balloon (1) so as to enable the balloon (1) to be inflated to a set state;

a connecting nozzle (13) communicated with the outside of the balloon (1) is integrally formed in the balloon (1);

the connecting nozzle (13) is provided with a sealing plug (5) towards an opening in the balloon (1), and the sealing plug (5) is connected with the connecting nozzle (13) in a sealing manner;

the operating rod (3) is arranged in the connecting nozzle (13) in a penetrating way, and the end part of the operating rod (3) is connected to the sealing plug (5);

the filling pipe (4) is inserted into the accommodating pipe (2) and is in sliding fit with the accommodating pipe (2), and the filling pipe (4) is inserted into the connecting nozzle (13);

the end part of the operating rod (3) is inserted into the seal plug (5), and the operating rod (3) and the seal plug (5) are fixedly inserted;

the sealing plug (5) comprises an inserting part (51) and an abutting part (52) which are integrally formed;

the insertion part (51) is inserted into the connecting nozzle (13);

the cross section size of the abutting part (52) is gradually increased in the direction away from the inserting part (51) to form a table-shaped structure, an abutting edge (14) is arranged at the end part of the connecting nozzle (13), and the abutting edge (14) abuts against the abutting part (52).

2. The implantable joint spacer of claim 1, wherein: the outer ring edge on the side surface of the sacculus (1) abutted to the joint is protruded to form a turnover edge (12).

3. The implantable joint spacer of claim 1, wherein: the operating rod (3) is in threaded connection with the sealing plug (5).

4. The implantable joint spacer of claim 3, wherein: a limiting structure used for limiting the rotation of the sealing plug (5) relative to the connecting nozzle (13) is arranged between the sealing plug (5) and the connecting nozzle (13).

5. The implantable joint spacer of claim 1, wherein: the sealing plug (5) is fixed with the connecting nozzle (13) through threads.

6. The implantable joint spacer of any one of claims 1-5, wherein: the balloon (1) and the internal structure are made of degradable materials.