CN110934667A

CN110934667A - Cartilage protection pad

Info

Publication number: CN110934667A
Application number: CN201911321908.1A
Authority: CN
Inventors: 王俊瑞
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2020-03-31

Abstract

The invention relates to the field of medical implants, in particular to a cartilage protection pad, which comprises an implantation protection pad made of flexible materials, wherein the implantation protection pad comprises a main installation surface and an auxiliary installation surface, the edges of two ends of the main installation surface are provided with the auxiliary installation surfaces, and the auxiliary installation surfaces are obliquely arranged relative to the main installation surface. Meanwhile, the method provides protection for the regeneration of the articular cartilage and creates conditions for the repair of the articular cartilage.

Description

Cartilage protection pad

Technical Field

The invention relates to the field of medical implants, in particular to a cartilage protection pad.

Background

Irreversible damage to cartilage at different parts of human joints, which can be caused by various reasons in life, is particularly high in incidence rate of elderly patients and causes serious arthritic diseases, thereby causing life quality to be reduced. This is often the case because:

1. the self-repairing ability of the damaged cartilage deteriorates gradually with the age, and the damaged cartilage is difficult to repair;

2. after cartilage damage, the repair depends on deep subchondral bone tissues, and the cartilage damage repair is difficult due to the osteoporosis condition;

3. the old patients with circulatory system diseases can cause the normal blood supply of joints to be obstructed. In addition, the condition of joint and bone cartilage damage caused by obesity, joint dysplasia and strenuous exercise is in a trend of youthfulness;

articular cartilage injuries can occur in different joints and different parts of the joints, so that the treatment difficulty is increased, and joint movement dysfunction is often caused if the joint is not treated in time, and the work and the life are influenced;

the existing stepped treatment scheme for articular cartilage damage has the following defects:

1. the side effects of oral drugs cause difficulty in long-term application and the curative effect cannot be lasting;

2. ideal treatment effect is difficult to achieve by injecting cartilage repair promoting drugs into joint cavities;

3. the minimally invasive arthroscopic surgery has limited treatment means for degenerative arthritis cartilage injury and poor curative effect;

4. the total joint replacement injury is large, the curative effect is good, but the service life is long;

5. the operation risk of the old patients with the combined multi-system diseases is increased, and once the joint replacement operation complications occur, the damage is large;

6. the current cartilage repair cartilage transplantation has the problems of ethic, donor and immune rejection;

7. the regeneration capability of cartilage tissue cells of old patients is poor, and the regeneration of effective tissue engineering cartilage cannot be met.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a cartilage protection pad, and the technical scheme is that a disposable implant is provided, and the implant has the characteristics of different thicknesses, high strength, softness, wear resistance and the like, so that the defect of the current step treatment for articular cartilage injury is overcome.

In order to solve the technical problems, the invention provides the following technical scheme:

the cartilage protection pad comprises an implantation protection pad made of flexible materials, wherein the implantation protection pad comprises a main installation surface and an auxiliary installation surface, the auxiliary installation surfaces are arranged at the edges of two ends of the main installation surface, and the auxiliary installation surfaces are obliquely arranged relative to the main installation surface.

Optionally, two auxiliary mounting surfaces are symmetrically arranged at the edges of the two ends of the main mounting surface.

Optionally, both the main mounting surface and the auxiliary mounting surface are provided with an inward concave arc-shaped surface, the main mounting surface and the auxiliary mounting surface are arranged on the same side of the arc-shaped surface, the main mounting surface and the auxiliary mounting surface are connected together and coated on the surface of the damaged cartilage, one end of the auxiliary mounting surface, which is far away from the main mounting surface, protrudes outwards, one end of the implant protection pad, which is far away from the main mounting surface, forms an implant joint surface, and one end of the implant protection pad, which is far away from the main mounting surface, is arranged as an outward convex arc-shaped surface.

Optionally, the auxiliary mounting surface includes a first auxiliary mounting surface and a second auxiliary mounting surface, the first auxiliary mounting surface is arranged at one end edge of the main mounting surface, the second auxiliary mounting surface is arranged at the other end edge of the main mounting surface on the same plane as the first auxiliary mounting surface, and the extending height of the first auxiliary mounting surface relative to the main mounting surface is greater than the extending height of the second auxiliary mounting surface relative to the main mounting surface.

Optionally, all be equipped with the arcwall face of inside sunken on main installation face, first vice installation face and the vice installation face of second, the arcwall face homonymy of main installation face, first vice installation face and the vice installation face of second sets up, main installation face, the arcwall face of the vice installation face of first vice installation face and second links together and the cladding is on the cartilage surface that receives the damage, the one end that main installation face was kept away from to first vice installation face and the vice installation face of second outwards protrusion sets up, the implant articular surface is formed to the one end face that main installation face was kept away from to implant protection pad, the one end face that main installation face was kept away from to implant protection pad is established to outside convex arcwall.

Optionally, two end faces of the implantation protection pad are both recessed inwards to form two main mounting faces, and two auxiliary mounting faces are symmetrically arranged at edges of two ends of each main mounting face.

Optionally, the main mounting surface and the auxiliary mounting surface are both provided with arc surfaces, the arc surfaces of the main mounting surface and the auxiliary mounting surface are both recessed inwards and arranged on the same side, one end, far away from the main mounting surface, of the auxiliary mounting surface is arranged in a protruding mode outwards, and the arc surfaces of the main mounting surface and the auxiliary mounting surface are connected together and coated on the surface of the damaged cartilage.

Optionally, two end faces of the implantation protection pad are recessed inwards to form two main mounting faces, each auxiliary mounting face comprises a first auxiliary mounting face and a second auxiliary mounting face, one end edge of each main mounting face is provided with the first auxiliary mounting face, the other end edge of each main mounting face and the first auxiliary mounting face are provided with the second auxiliary mounting face in the same plane, and the extending height of the first auxiliary mounting face relative to the main mounting face is greater than the extending height of the second auxiliary mounting face relative to the main mounting face.

Optionally, all be equipped with the arcwall face on main installation face, first vice installation face and the vice installation face of second, the arcwall face of main installation face, first vice installation face and the vice installation face of second all inwards caves in and the homonymy sets up, and the arcwall face of main installation face, first vice installation face and the vice installation face of second links together and the cladding is on the cartilage surface that receives the damage, and the one end that main installation face was kept away from to first vice installation face and the vice installation face of second outwards protrudes the setting.

Optionally, the implantation protection pad is made by a 3D printing technology and comprises a structural layer and an interface layer, wherein the interface layer is coated on the periphery of the structural layer, the structural layer is made of expanded polytetrafluoroethylene or an ultra-high molecular weight polyethylene material, and the interface layer is made of a polypropylene material.

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

the protective pad is used as a disposable implant, does not generate a large operation incision during treatment, and has different thicknesses, high strength and good wear resistance.

The protective pad is suitable for minimally invasive surgical treatment of cartilage injury, can select different thicknesses and shapes according to the requirements of the state of illness, meets the requirements of cartilage injury treatment of different parts, provides better tensile strength, cutting resistance and wear resistance, is a soft material, can simulate cartilage tissues, replaces the injured articular cartilage to play a buffering role, avoids further injury caused by stress concentration, provides protection for regeneration of the articular cartilage, and creates conditions for repairing the articular cartilage.

Drawings

FIG. 1 is a schematic view of a configuration of the present invention having a primary mounting surface;

FIG. 2 is a schematic structural view of another aspect of the present invention having a primary mounting surface;

FIG. 3 is a schematic view of a configuration of a state of the invention having two primary mounting surfaces;

FIG. 4 is a schematic structural view of another aspect of the present invention having two primary mounting surfaces;

fig. 5 and 6 are cross-sectional views of different main mounting surfaces of the present invention.

The reference numbers in the figures are:

1-implanting a protective pad; 101-structural layer; 102-an interface layer; 1 a-a primary mounting surface; 1 b-a secondary mounting surface; 1b 1-a first secondary mounting surface; 1b 2-second secondary mounting surface.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The cartilage protection pad comprises a main mounting surface and an auxiliary mounting surface, wherein the auxiliary mounting surface is arranged at the edges of two ends of the main mounting surface, and the auxiliary mounting surface is obliquely arranged relative to the main mounting surface.

Through the design of this protection pad, can not produce great operation incision when carrying out the treatment to thickness is different, and intensity is high, wear resistance is good.

The preferred embodiments of the protection pad will be described with reference to the accompanying drawings.

The protection pad comprises an implantation protection pad 1 made of flexible materials, wherein the implantation protection pad 1 comprises a main installation surface 1a and an auxiliary installation surface 1b, the edges of two ends of the main installation surface 1a are provided with the auxiliary installation surfaces 1b, and the auxiliary installation surfaces 1b are obliquely arranged relative to the main installation surface 1 a. The main mounting surface 1a is in contact with damaged cartilage as the name implies, to protect the damaged cartilage, and to exert a cushioning protection effect instead of the damaged cartilage. The auxiliary mounting surface 1b is used for ensuring that the two end edges of the main mounting surface 1a of the protection pad can cover cartilage and providing a position for side fixing, after the main mounting surface 1a is contacted and attached with the cartilage, the main mounting surface 1a is fixed with bones, the fixing and mounting of the position of the protection pad on the cartilage are completed, the main mounting surface 1a and the auxiliary mounting surface 1b are integrally molded, and it can be understood that the auxiliary mounting surface 1a is a part of the main mounting surface 1 a.

Specifically, referring to fig. 1, two auxiliary mounting surfaces 1b are symmetrically arranged at the edges of two ends of a main mounting surface 1a, arc-shaped surfaces are arranged on the main mounting surface 1a and the auxiliary mounting surfaces 1b, the arc-shaped surfaces of the main mounting surface 1a and the auxiliary mounting surfaces 1b are arranged at the same side, the arc-shaped surfaces of the main mounting surface 1a and the auxiliary mounting surface 1b are connected together and coated on the surface of the damaged cartilage, one end of the auxiliary mounting surface 1b far away from the main mounting surface 1a is outwards protruded, and the arc-shaped surfaces enable the protection pad to form a C-shaped structure, because the whole protective pad is made of flexible materials, the arrangement of the arc-shaped surface ensures that the main mounting surface 1a can be better attached with the cartilage, so that the protective pad protects the damaged cartilage, and simultaneously, the auxiliary mounting surface 1b is convenient to be attached to the cartilage, and further secured around the articular surface by sutures, suture anchors, split staples, or suture steel plates. One end face, far away from the main mounting surface 1a, of the implant protection pad 1 forms an implant joint surface, one end face, far away from the main mounting surface 1a, of the implant protection pad 1 is set to be an arc-shaped surface protruding outwards, namely the main mounting surface 1a and the auxiliary mounting surface 1b, which are recessed inwards, of the protection pad are attached to damaged cartilage, and the arc-shaped surface protruding outwards is changed into a joint surface of the damaged cartilage at the joint.

Referring to fig. 2, the sub-mounting surface 1b includes a first sub-mounting surface 1b1 and a second sub-mounting surface 1b2, the first sub-mounting surface 1b1 is symmetrically disposed at one end of the main mounting surface 1a, the second sub-mounting surface 1b2 is disposed at the other end of the main mounting surface 1a on the same plane as the first sub-mounting surface 1b1, and the first sub-mounting surface 1b1 extends to a height greater than the second sub-mounting surface 1b2 extends to the main mounting surface 1 a. The first sub-mounting surface 1b1 with higher extension height is the main part of the mounting, and the other second sub-mounting surface 1b2 can support and fit the main mounting surface 1a on the cartilage.

Similarly, the main mounting surface 1a, the first sub mounting surface 1b1 and the second sub mounting surface 1b2 are provided with arc surfaces, the main mounting surface 1a, the first sub mounting surface 1b1 and the second sub mounting surface 1b2 are arranged on the same side of the arc surfaces, the arc surfaces of the main mounting surface 1a, the first sub mounting surface 1b1 and the second sub mounting surface 1b2 are connected together and cover the surface of the damaged cartilage, and one ends of the first sub mounting surface 1b1 and the second sub mounting surface 1b2, which are far away from the main mounting surface 1a, are arranged in a protruding mode. An end face of the implant protection pad 1, which is far away from the main mounting surface 1a, forms an implant joint surface, and an end face of the implant protection pad 1, which is far away from the main mounting surface 1a, is set to be an arc-shaped surface which protrudes outwards, namely, the main mounting surface 1a and the auxiliary mounting surface 1b which are recessed inwards of the protection pad are attached to damaged cartilage, so that the damaged cartilage of the joint surface is protected, and the arc-shaped surface which protrudes outwards forms the joint surface of the joint.

Referring to fig. 3, in the present embodiment, different from the previous embodiment, two end surfaces of the implantation protection pad 1 are recessed inwards to form two main mounting surfaces 1a, two auxiliary mounting surfaces 1b are symmetrically arranged at two end edges of each main mounting surface 1a, arc surfaces are arranged on the main mounting surface 1a and the auxiliary mounting surface 1b, the arc surfaces of the main mounting surface 1a and the auxiliary mounting surface 1b are recessed inwards and arranged on the same side, one end of the auxiliary mounting surface 1b, which is far away from the main mounting surface 1a, is protruded outwards, and the arc surfaces of the main mounting surface 1a and the auxiliary mounting surface 1b are connected together and cover the damaged cartilage surface. Two arcwall faces make the both ends of this protection pad all form an inside sunken C type structure, totally two C type structures, and the setting up of arcwall face makes main installation face 1a can laminate with the cartilage better, protects the cartilage that receives the damage, and the vice installation face 1b of also being convenient for simultaneously laminates with the cartilage, and then utilizes suture, strip line anchor nail, fixes on bone surface around the articular surface to blind rivet or strip line steel sheet etc.. One main mounting surface 1a is attached to one cartilage, and the two main mounting surfaces 1a are arranged to attach to two cartilage joint surfaces of a joint of a human body, which are combined through the cartilage, so that the two cartilage joint surfaces used for combination at the joint are protected, a buffering effect is exerted, the cartilage at the joint is further prevented from being damaged, and the self-repair of the damaged cartilage is promoted.

Referring to fig. 4, two end surfaces of the implantation protection pad 1 are recessed inwards to form two main mounting surfaces 1a, each auxiliary mounting surface 1b comprises a first auxiliary mounting surface 1b1 and a second auxiliary mounting surface 1b2, one end of each main mounting surface 1a is symmetrically provided with a first auxiliary mounting surface 1b1, the other end of each main mounting surface 1a is provided with a second auxiliary mounting surface 1b2 on the same surface as the first auxiliary mounting surface 1b1, and the extending height of the first auxiliary mounting surface 1b1 relative to the main mounting surface 1a is greater than the extending height of the second auxiliary mounting surface 1b2 relative to the main mounting surface 1 a. The first sub-mounting surface 1b1 with higher extension height is the main part of the mounting, and the other second sub-mounting surface 1b2 can support and fit the main mounting surface 1a on the cartilage.

The main mounting surface 1a, the first auxiliary mounting surface 1b1 and the second auxiliary mounting surface 1b2 are provided with arc surfaces, the arc surfaces of the main mounting surface a, the first auxiliary mounting surface 1b1 and the second auxiliary mounting surface 1b2 are recessed inwards and arranged on the same side, the arc surfaces of the main mounting surface 1a, the first auxiliary mounting surface 1b1 and the second auxiliary mounting surface 1b2 are connected together and cover the surface of damaged cartilage, and one ends, far away from the main mounting surface 1a, of the first auxiliary mounting surface 1b1 and the second auxiliary mounting surface 1b2 are arranged in a protruding mode.

Referring to fig. 5 and 6, the implantation protection pad 1 is manufactured by a 3D printing technology, and includes a structural layer 101 and an interface layer 102, the interface layer 102 is wrapped around the structural layer 101, the materials used for the structural layer 101 and the interface layer 102 include, but are not limited to, expanded polytetrafluoroethylene, ultra-high molecular weight polyethylene, polypropylene, polyethylene terephthalate or polyvinylidene fluoride, polypropylene, polyester, polyamide, polyethylene terephthalate, polyethylene, polyester, polyethylene, polyurethane, polymethyl methacrylate, polyethylene glycol bis-benzophenone, and the like, and their expanded, modified, and composite materials. The structural layer 101 is made of expanded polytetrafluoroethylene material, has strong corrosion resistance, creep resistance and cold flow resistance, is soft and good in compliance of an implant, high in tensile strength, creep resistance, hydrophobicity and biocompatibility, is applied to human tissue repair for many years at home and abroad, and has no side effects of carcinogenesis, teratogenesis and the like.

The shape of the protective pad comprises but is not limited to a sheet shape and an aspheric surface shape, the protective pad can be fixed with the bone surface of the articular cartilage injury part in a customized mode through a 3D printing method, the hardness of the protective pad is close to that of human cartilage tissues, and the human tissue injury cannot be caused. The thickness of the implant comprises various specifications, can meet the requirements of the thickness of the implant required by different joint parts, and plays the roles of buffering stress, protecting local cartilage and providing support for cartilage repair. The application scenes of the protective pad include but are not limited to arthroscopy, limited incision wound and minimally invasive treatment, the protective pad is fixed on a bone surface through a secondary mounting surface 1b by utilizing a fixing device such as a suture, a threaded anchor, a split nail or a threaded steel plate and the like fixed around a joint surface, and further plays a role in the joint, and the using time of the protective pad includes but is not limited to taking out according to the cartilage recovery condition of a patient, taking out when loosening occurs and regular replacement.

When in operation, the protective pad can be pre-folded, only a small operation incision is needed to be made on the skin of a patient, the protective pad is placed into the cartilage injury part of the joint cavity through an operation channel or an auxiliary incision, the implant is opened after being implanted into the joint cavity, the normal motion function of the joint of the human body is recovered while the protection pad is provided for protecting the local injury through methods such as sewing, bonding and fixing, and the like, so that the purpose of treatment is achieved.

Claims

1. The cartilage protection pad is characterized by comprising an implantation protection pad (1) made of a flexible material, wherein the implantation protection pad (1) comprises a main installation surface (1 a) and an auxiliary installation surface (1 b), the auxiliary installation surfaces (1 b) are arranged at the edges of two ends of the main installation surface (1 a), and the auxiliary installation surfaces (1 b) are obliquely arranged relative to the main installation surface (1 a).

2. The cartilage protection pad according to claim 1, wherein two secondary mounting surfaces (1 b) are symmetrically arranged at the edges of the two ends of the primary mounting surface (1 a).

3. The cartilage protection pad according to claim 2, wherein the main mounting surface (1 a) and the auxiliary mounting surface (1 b) are provided with inward concave arc surfaces, the arc surfaces of the main mounting surface (1 a) and the auxiliary mounting surface (1 b) are arranged on the same side, the arc surfaces of the main mounting surface (1 a) and the auxiliary mounting surface (1 b) are connected together and cover the damaged cartilage surface, one end, away from the main mounting surface (1 a), of the auxiliary mounting surface (1 b) is arranged in a convex mode, one end, away from the main mounting surface (1 a), of the implant protection pad (1) forms an implant joint surface, and one end, away from the main mounting surface (1 a), of the implant protection pad (1) is arranged in an outward convex arc surface.

4. The cartilage protection pad according to claim 1, wherein the sub-mounting surface (1 b) comprises a first sub-mounting surface (1 b 1) and a second sub-mounting surface (1 b 2), the first sub-mounting surface (1 b 1) is provided at one end edge of the main mounting surface (1 a), the second sub-mounting surface (1 b 2) is provided at the other end edge of the main mounting surface (1 a) in the same plane as the first sub-mounting surface (1 b 1), and the first sub-mounting surface (1 b 1) extends to a greater height with respect to the main mounting surface (1 a) than the second sub-mounting surface (1 b 2) extends to the main mounting surface (1 a).

5. The cartilage protection pad according to claim 4, wherein the main mounting surface (1 a), the first sub-mounting surface (1 b 1) and the second sub-mounting surface (1 b 2) are each provided with an inwardly concave arc-shaped surface, the main mounting surface (1 a), the implant joint surface is characterized in that the arc surfaces of the first auxiliary mounting surface (1 b 1) and the second auxiliary mounting surface (1 b 2) are arranged on the same side, the arc surfaces of the main mounting surface (1 a), the first auxiliary mounting surface (1 b 1) and the second auxiliary mounting surface (1 b 2) are connected together and coated on the surface of damaged cartilage, one ends, far away from the main mounting surface (1 a), of the first auxiliary mounting surface (1 b 1) and the second auxiliary mounting surface (1 b 2) are arranged in a protruding mode, one end, far away from the main mounting surface (1 a), of the implant protection pad (1) forms an implant joint surface, and one end, far away from the main mounting surface (1 a), of the implant protection pad (1) is arranged in a protruding arc surface mode.

6. The cartilage protection pad according to claim 1, wherein two end faces of the implantation protection pad (1) are recessed inwards to form two primary mounting surfaces (1 a), and two secondary mounting surfaces (1 b) are symmetrically arranged at two end edges of each primary mounting surface (1 a).

7. The cartilage protection pad according to claim 6, wherein the main mounting surface (1 a) and the auxiliary mounting surface (1 b) are provided with arc surfaces, the arc surfaces of the main mounting surface (1 a) and the auxiliary mounting surface (1 b) are recessed inwards and arranged on the same side, one end of the auxiliary mounting surface (1 b) far away from the main mounting surface (1 a) is projected outwards, and the arc surfaces of the main mounting surface (1 a) and the auxiliary mounting surface (1 b) are connected together and coated on the surface of damaged cartilage.

8. The cartilage protection pad according to claim 1, wherein two end faces of the implant protection pad (1) are recessed inwards to form two main mounting faces (1 a), the auxiliary mounting faces (1 b) comprise a first auxiliary mounting face (1 b 1) and a second auxiliary mounting face (1 b 2), the first auxiliary mounting face (1 b 1) is arranged at one end edge of each main mounting face (1 a), the second auxiliary mounting face (1 b 2) is arranged at the other end edge of each main mounting face (1 a) and is positioned on the same plane as the first auxiliary mounting face (1 b 1), and the first auxiliary mounting face (1 b 1) extends to a greater height relative to the main mounting face (1 a) than the second auxiliary mounting face (1 b 2) extends to a height relative to the main mounting face (1 a).

9. The cartilage protection pad according to claim 8, wherein arc-shaped surfaces are arranged on the main mounting surface (1 a), the first auxiliary mounting surface (1 b 1) and the second auxiliary mounting surface (1 b 2), the arc-shaped surfaces of the main mounting surface (1 a), the first auxiliary mounting surface (1 b 1) and the second auxiliary mounting surface (1 b 2) are recessed inwards and arranged on the same side, the arc-shaped surfaces of the main mounting surface (1 a), the first auxiliary mounting surface (1 b 1) and the second auxiliary mounting surface (1 b 2) are connected together and coated on the surface of damaged cartilage, and one ends of the first auxiliary mounting surface (1 b 1) and the second auxiliary mounting surface (1 b 2) far away from the main mounting surface (1 a) are arranged in a protruding mode outwards.

10. The cartilage protection pad according to claim 1, wherein the implant protection pad (1) is manufactured by a 3D printing technology and comprises a structural layer (101) and an interface layer (102), the interface layer (102) is coated on the periphery of the structural layer (101), the structural layer (101) is made of expanded polytetrafluoroethylene or ultra-high molecular weight polyethylene material, and the interface layer (102) is made of polypropylene material.