CN215307051U

CN215307051U - Non-fusion elastic facet joint prosthesis

Info

Publication number: CN215307051U
Application number: CN202121366558.3U
Authority: CN
Inventors: 陈永兵; 陆军; 曹刚; 陆伟
Original assignee: SUZHOU GEMMED MEDICAL INSTRUMENT CO Ltd
Current assignee: SUZHOU GEMMED MEDICAL INSTRUMENT CO Ltd
Priority date: 2021-06-18
Filing date: 2021-06-18
Publication date: 2021-12-28
Anticipated expiration: 2031-06-18

Abstract

The utility model discloses a non-fusion elastic facet joint prosthesis, which comprises a first connecting part, a joint part and a second connecting part, wherein the joint part is arranged between the first connecting part and the second connecting part; the joint part is an integral structure made of elastic materials, and a first notch is arranged in the middle of the joint part. The utility model has the advantages that the elasticity and the strength of elastic materials such as silica gel and the like can play a good role in supporting and bending deformation, the movement of the facet joint is ensured, the joint movement can be repeatedly carried out for many times, the service life is long, and the silica gel and the titanium alloy can realize good biological fusion with the phalanges and soft tissues of the human body. The bionic finger joint replacement part is used for replacing an injured joint, has the advantages of simple structure, low cost, convenience in manufacturing, good mechanical matching property, good conformity with human body biomechanics structure, good conformality and firm connection resistance, ensures mechanical strength and simultaneously reduces the influence on the mobility of fingers to the minimum.

Description

Non-fusion elastic facet joint prosthesis

Technical Field

The utility model belongs to the technical field of artificial joint prostheses, and particularly relates to a non-fusion elastic facet joint prosthesis.

Background

The finger joints are important joints of palms, the functional states of the finger joints directly influence the palms, various diseases or wounds can cause chronic pain, deformity or dyskinesia of the finger joints, and the finger joints are influenced to move to different degrees along with the occurrence, the progress and the return of the diseases, so that the finger joints are finally disordered to influence normal life. Currently, with the progress of medical technology and the development of medical instruments, more and more artificial joints are used in orthopedic surgery. For patients with hand joint injury, artificial joint replacement is a better treatment method, the technology can reconstruct the motion function of finger joints, recover the stability of the finger joints and correct the deformity of the finger joints, and the pain of the patients is obviously relieved while the appearance of the finger joints is improved. Firstly, it is simpler to operate, and is relatively simpler compared with free toe joint transplantation; secondly, the postoperative effect is more definite, most cases have good activities at the time of the operation, and the effect is better if the early training and the method are proper after the operation; furthermore, the mobility of the artificial joint is greater compared to arthroplasty and joint free grafting; finally, unlike free implantation of the toe joint, prosthesis replacement does not cause damage to other parts. Due to the complexity and the particularity of the finger joint structure, the traditional artificial finger joint still has a plurality of problems, the long-term poor effect and the occurrence of complications limit the greater popularization and application of the artificial finger joint, and the important reason is that the selection of prosthesis materials and the design of the prosthesis are imperfect. In recent years, with the continuous improvement of artificial joint design, three new concepts of anatomical shape design, osseointegration and high and new technology materials are fused, the problems of joint aging, loosening, collapse and the like are gradually improved, and therefore the effect of artificial joint replacement is better and better. Not only the swelling, pain, deformity of the original joint disappeared after the operation, but also the improvement of the mobility of the joint was the greatest among these operations.

At present, the artificial interphalangeal joint prosthesis has few varieties and few choices for patients. Chinese patent application, application No. cn201910718310.x, application date 2019.08.05, application publication No. CN110368145A, application publication date 2019.10.25, discloses a finger joint prosthesis, comprising: the first connecting part is used for being connected with a first phalanx remained on the human body; the second connecting part is used for being connected with a second phalanx remained on the human body; the joint part is arranged between the first connecting part and the second connecting part, the first connecting part, the second connecting part and the joint part are of an integrated structure made of polymer materials, and at least one of the first connecting part and the second connecting part can rotate relative to the joint part. The finger joint prosthesis disclosed by the technical scheme has the advantages that a plurality of functional structures and connecting structures are arranged on small finger joints, the production and processing need to control higher precision, corresponding action mechanisms for replacing normal finger joints are complex, and the use requirements of patients cannot be completely met.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved

Aiming at the problems that the artificial interphalangeal joint prosthesis disclosed in the prior art has few varieties and few choices of patients, the utility model aims to provide a non-fused elastic facet joint prosthesis which is used as a bionic facet joint replacement part to replace a damaged joint, has simple structure, low cost, convenient manufacture, good mechanical matching, better accordance with human body biomechanics structure, good conformability and firm connection resistance, ensures the mechanical strength, the influence on the mobility of the fingers is minimized, the method is an effective mode for overcoming the defects of the prior art, and an effective artificial interphalangeal joint prosthesis selection scheme is provided for patients.

2. Technical scheme

In order to achieve the purpose and achieve the technical effect, the utility model adopts the following technical scheme:

a non-fusion elastic facet joint prosthesis comprises a first connecting part, a joint part and a second connecting part, wherein the joint part is arranged between the first connecting part and the second connecting part; the joint part is an integral structure made of elastic materials, and a first notch is arranged in the middle of the joint part; the joint part made of elastic materials can play a good role in supporting and bending deformation through the elasticity and the strength of the joint part, and the stability and the reliability of long-term implantation are ensured.

In a specific embodiment of the present invention, the first notch is shaped like a horseshoe, and two wings of the horseshoe are arranged on two opposite surfaces of the joint part, and the cross section is tapered.

In a specific embodiment of the present invention, the elastic material is silicone.

In a specific embodiment of the utility model, the knuckle portion is provided with an arc-shaped concave surface on the opposite surface of the first notch.

In a specific embodiment of the utility model, the first connecting portion includes a first connecting plate, a first prism table, and a second prism table connected in sequence, and the first connecting portion is connected with the joint portion through the first connecting plate.

In a specific embodiment of the utility model, the lower bottom surface of the second prism table is connected with the upper bottom surface of the first prism table, the area of the lower bottom surface of the second prism table is smaller than that of the upper bottom surface of the first prism table, and the length of the first prism table and the length of the second prism table are made according to the size required by the patient.

In a specific embodiment of the present invention, the first connecting portion is made of a material selected from titanium alloy, and is manufactured by a 3D printing technology and is integrally formed.

In a specific embodiment of the utility model, the second connecting portion includes a second connecting plate, a third frustum and a fourth frustum, which are connected in sequence, and the second connecting portion is connected with the joint portion through the second connecting portion.

In a specific embodiment of the present invention, the lower bottom surface of the fourth prism table is connected to the upper bottom surface of the third prism table, the area of the lower bottom surface of the fourth prism table is smaller than the area of the upper bottom surface of the third prism table, and the length of the third prism table and the length of the fourth prism table are made according to the size required by the patient.

In a specific embodiment of the present invention, the material used for the second connection portion is selected from titanium alloy, and is prepared by a 3D printing technology and is integrally formed.

The non-fusion elastic facet joint prosthesis provided by the utility model can be used for replacing human knuckle joints, when artificial joint replacement is implemented, the first connecting part is set to be connected with a first remaining phalanx of a human body, the second connecting part is set to be connected with a second remaining phalanx of the human body, and in an implantation operation, the direction of a first gap of the joint part is the same as the bending direction of a normal knuckle joint of the human body. After the surgical implantation is successful, the elasticity and the strength of the silica gel are utilized, the first notch becomes a moving space for bending the joint part, the movement of the facet joint is ensured, the joint movement can be repeatedly carried out, and the service life is long.

3. Advantageous effects

Compared with the prior art, the utility model has the beneficial effects that: the elasticity and the strength of elastic materials such as silica gel and the like can play a good role in supporting and bending deformation, so that the movement of the facet joint is ensured, the joint movement can be repeatedly carried out for many times, the service life is long, and the silica gel and the titanium alloy can be well fused with the phalanges and soft tissues of a human body. The artificial interphalangeal joint prosthesis is used as a bionic interphalangeal joint replacement part to replace an injured joint, has the advantages of simple structure, low cost, convenience in manufacturing, good mechanical matching property, good conformability and firm connection resistance, better accordance with human body biomechanics structure, ensures mechanical strength, minimizes the influence on the mobility of fingers, is an effective mode for overcoming the defects of the prior art, and provides an effective artificial interphalangeal joint prosthesis selection scheme for patients.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic front view of the present invention.

Fig. 2 is a schematic top view of the present invention.

Fig. 3 is a schematic view of the joint structure of the present invention.

Fig. 4 is a left side view structure diagram of the present invention.

FIG. 5 is a schematic diagram of the right view structure of the present invention

In the figure: 1-a joint portion; 2-a first gap; 3-arc concave surface; 4-a first connection plate; 5-a first prismatic table; 6-a second prismatic table; 7-a second connecting plate; 8-a third prismatic table; 9-a fourth prismatic table; 10-two wings.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the utility model, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the utility model.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be interpreted broadly, e.g. as a fixed connection, a detachable connection or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the utility model can be understood in specific cases to those of ordinary skill in the art.

As shown in fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, the non-fusion elastic facet joint prosthesis comprises a first connecting part, a joint part 1 and a second connecting part, wherein the joint part 1 is arranged between the first connecting part and the second connecting part; the joint part 1 is an integrated structure made of elastic materials, wherein the elastic materials are silica gel, the middle part of the joint part 1 is provided with a first gap 2, the first gap 2 is in a horseshoe shape, two wings 10 of the horseshoe shape are arranged on two opposite surfaces of the joint part, and the cross section is in a conical shape; the joint part 1 made of elastic material can play a good role in supporting and bending deformation through the elasticity and the strength of the joint part 1, and the stability and the reliability of long-term implantation are ensured.

The joint part 1 is provided with an arc-shaped concave surface 3 on the opposite surface of the first notch 2.

The first connecting portion comprises a first connecting plate 4, a first terrace with edge 5 and a second terrace with edge 6 which are connected in sequence, and the first connecting portion is connected with the joint portion 1 through the first connecting plate 4. The lower bottom surface of the second prismatic table 6 is connected with the upper bottom surface of the first prismatic table 5, the area of the lower bottom surface of the second prismatic table 6 is smaller than that of the upper bottom surface of the first prismatic table 5, and the length of the first prismatic table 5 and the length of the second prismatic table 6 are manufactured according to the size required by a patient. The material used for the first connecting part is selected from titanium alloy, is prepared by a 3D printing technology and is integrally formed.

The second connecting portion include second connecting plate 7, third terrace with edge 8, the fourth terrace with edge 9 that connects gradually, and the second connecting portion passes through the second connecting portion and is connected with joint portion 1. The lower bottom surface of the fourth prismoid 9 is connected with the upper bottom surface of the third prismoid 8, the area of the lower bottom surface of the fourth prismoid 9 is smaller than that of the upper bottom surface of the third prismoid 8, and the length of the third prismoid 8 and the length of the fourth prismoid 9 are made according to the size required by the patient. The material used for the second connecting part is selected from titanium alloy, is prepared by a 3D printing technology and is integrally formed.

The non-fusion elastic facet joint prosthesis provided by the utility model can be used for replacing human knuckle joints, when artificial joint replacement is carried out, the first connecting part is set to be connected with the first remaining phalanx of a human body, the second connecting part is set to be connected with the second remaining phalanx of the human body, and in an implantation operation, the direction of the first gap 2 of the joint part 1 is the same as the bending direction of a normal knuckle joint of the human body. After the surgical implantation is successful, the first notch 2 becomes a bending movable space of the joint part 1 by utilizing the elasticity and the strength of the silica gel, so that the movement of the facet joint is ensured, the joint movement can be repeatedly carried out, and the service life is long.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A non-fusion elastic facet joint prosthesis comprises a first connecting part, a joint part and a second connecting part, wherein the joint part is arranged between the first connecting part and the second connecting part; the method is characterized in that: the joint part is an integral structure made of elastic materials, and a first notch is arranged in the middle of the joint part.

2. The non-fused elastic facet joint prosthesis according to claim 1, wherein: the first gap is in a horseshoe shape, two wings of the horseshoe shape are arranged on two opposite surfaces of the joint part, and the cross section of the first gap is conical.

3. The non-fused elastic facet joint prosthesis according to claim 1, wherein: the elastic material is silica gel.

4. The non-fused elastic facet joint prosthesis according to claim 1, wherein: the joint part is provided with an arc-shaped concave surface on the opposite surface of the first notch.

5. The non-fused elastic facet joint prosthesis according to claim 1, wherein: the first connecting portion comprises a first connecting plate, a first prism table and a second prism table which are connected in sequence, and the first connecting portion is connected with the joint portion through the first connecting plate.

6. The non-fused elastic facet joint prosthesis according to claim 5, wherein: the lower bottom surface of the second prismatic table is connected with the upper bottom surface of the first prismatic table, the area of the lower bottom surface of the second prismatic table is smaller than that of the upper bottom surface of the first prismatic table, and the length of the first prismatic table and the length of the second prismatic table are manufactured according to the size required by a patient.

7. The non-fused elastic facet joint prosthesis according to claim 5, wherein: the first connecting portion is made of a material selected from titanium alloy, is prepared by a 3D printing technology and is integrally formed.

8. The non-fused elastic facet joint prosthesis according to claim 1, wherein: the second connecting portion include second connecting plate, third terrace with edge, the fourth terrace with edge that connects gradually, the second connecting portion pass through the second connecting portion and are connected with joint portion.

9. The non-fused elastic facet joint prosthesis according to claim 8, wherein: the lower bottom surface of the fourth prismoid is connected with the upper bottom surface of the third prismoid, the area of the lower bottom surface of the fourth prismoid is smaller than that of the upper bottom surface of the third prismoid, and the length of the third prismoid and the length of the fourth prismoid are manufactured according to the size required by a patient.

10. The non-fused elastic facet joint prosthesis according to claim 8, wherein: the material used by the second connecting part is selected from titanium alloy, is prepared by a 3D printing technology and is integrally formed.