WO2023029734A1

WO2023029734A1 - Repair device for joint tissue

Info

Publication number: WO2023029734A1
Application number: PCT/CN2022/103737
Authority: WO
Inventors: 刘琛; 常兆华; 聂京闽; 岳斌; 葛亮
Original assignee: 上海竞捷医疗科技有限公司
Priority date: 2021-09-01
Filing date: 2022-07-04
Publication date: 2023-03-09
Also published as: CN113749818A

Abstract

A repair device for a joint tissue, comprising a cushioning portion (100) and a fixing portion (200). The cushioning portion (100) comprises a cavity, the cavity allowing the filling of a filling substance so that the cushioning portion (100) is in an expanded state; the fixing portion (200) is provided on the cushioning portion (100); the fixing portion (200) has a deformation capability and can deform under the action of an external force, so as to allow the cushioning portion (100) to move within a predetermined range defined by the deformation of the fixing portion (200).

Description

Repair device for joint tissue

technical field

The present application relates to the technical field of medical devices, in particular to a repair device for joint tissue.

Background technique

The rotator cuff is the muscle-tendon structure that connects the scapula to the head of the humerus and is located on the outer layer of the shoulder joint capsule and the inner layer of the deltoid muscle. The rotator cuff is composed of anterior rotator cuff (subscapularis), upper rotator cuff (supraspinatus and infraspinatus), and posterior rotator cuff (infraspinatus and teres minor). The function of external rotation and abduction, the more important function is to stabilize the position of the humeral head on the glenoid during activities, maintain the muscle moment arm, and avoid the pain caused by the upward movement of the humeral head and impact on the acromion. Therefore, the rotator cuff plays an extremely important role in maintaining the stability of the shoulder joint and in the process of shoulder joint movement.

However, with age, long-term repeated shoulder joint activities, subacromial bone hyperplasia, or repeated violent activities may cause wear and tear of subacromial soft tissues (joint bursa, rotator cuff), making the humerus The stability and mobility of the head are impaired, and the patient's arm cannot be abducted or raised during the shoulder joint movement, and severe pain is caused by the impact between the bone or the bone and the rotator cuff, which may also cause the patient to suffer from pain. The inability to sleep at night seriously affects the quality of life and self-care ability.

At present, the pain caused by rotator cuff injury can be treated by implanting a prosthesis (such as a balloon). The distance between the humeral head and the fracture surface of the tendon acts as a "lever", preventing the impact of the damaged rotator cuff and the bony structure of the acromion, increasing the stability of the glenohumeral joint, and reducing the subacromial pressure, thereby To relieve pain, it can also reduce the upward movement of the humeral head, increase the shoulder-humeral distance, increase the shoulder joint abduction arm, and quickly improve the mobility of the shoulder joint.

However, after the prosthesis is implanted in the shoulder joint, as the shoulder joint moves, the prosthesis will also rub against the humeral head. Over time, it will break due to frequent friction and reduce the service life of the prosthesis.

Contents of the invention

According to various embodiments of the present application, the present application provides a repair device for joint tissue, comprising:

a cushion, which may be in a deflated state or an expanded state, said cushion comprising a cavity configured for filling with an inflation substance to bring said cushion into said expanded state; and

A fixing part, one end of the fixing part is arranged on the buffer part, and the other end is a free end for fixing with the target tissue; the fixing part has deformability and can be deformed under the action of an external force to allow the buffer part It moves within a predetermined range defined by the deformation of the fixing part.

On the one hand, the fixing part includes an elastic member, and the elastic member can be elastically deformed under the action of external force.

In one aspect, the elastic member includes at least one elastic thread.

In one aspect, the elastic member comprises at least one elastic band.

On the one hand, the fixing part is a non-elastic member and the fixing part has the ability of stretching and contracting.

On the one hand, the buffer part is made of polyethylene, polyester, polytetrafluoroethylene, polypropylene, polyamide, nickel-titanium alloy or stainless steel.

On the one hand, the material of the fixing part is ultra-high molecular weight polyethylene, polyurethane, polyethylene terephthalate, thermoplastic rubber or thermoplastic vulcanized rubber.

On the one hand, the cushioning part includes a bladder and a bladder cover, and the surface of the bladder is braided to form the bladder cover.

On the one hand, the capsule casing includes an inner space, the capsule is disposed in the interior space, the fixing part is disposed on the surface of the capsule casing, and there is a movable space between the capsule and the capsule casing , so as to allow the buffer part to move in the activity space.

On the one hand, the capsule casing is fixed on the surface of the capsule, and the fixing part is arranged on the surface of the capsule casing.

On the one hand, the capsule body and the capsule casing are integrally braided and formed by braiding wires.

On the one hand, the fixing part and the capsule casing are integrally braided and formed by braiding wires.

On the one hand, the cushioning part includes a capsule and a capsule casing, the fixing part is arranged on the surface of the capsule, and the surface of the capsule forms the capsule casing by electrostatic spraying.

In the above-mentioned repair device for joint tissue, the use of the fixing part can ensure that the buffer part can move flexibly in the joint tissue with the joint movement, but not too far from the original position. Based on the limited range provided for the buffer part On the one hand, it can ensure that the buffer part adapts to the relative position change of the humeral head and the acromion during the shoulder joint movement, avoiding the buffer part called the hindrance of the humeral head activity, and on the other hand, it can reduce the impact of the buffer part and the inner acromion of the shoulder joint. , humeral head and other positions of the friction, improve the service life of the buffer.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or related technologies. Obviously, the accompanying drawings in the following description are only For some embodiments of the application, those skilled in the art can also obtain other drawings based on these drawings without creative work.

FIG. 1 is a schematic structural view of a repair device in some embodiments of the present application;

Fig. 2 is a schematic diagram of a non-stressed state of the fixing part in some embodiments of the present application;

Fig. 3 is an enlarged schematic diagram of the non-stressed state of the fixing part shown in Fig. 2;

Fig. 4 is a schematic diagram of the stress state of the fixing part in some embodiments of the present application;

Fig. 5 is an enlarged schematic diagram of the stressed state of the fixing part shown in Fig. 2;

Fig. 6 is a schematic diagram of the level structure of the repair device in other embodiments of the present application;

FIG. 7 is an enlarged schematic view of the level of the repair device shown in FIG. 6;

Fig. 8 is a schematic structural diagram of a repair device in another embodiment of the present application;

Fig. 9 is a schematic diagram of a non-stressed state of the fixing part in other embodiments of the present application;

Fig. 10 is a schematic diagram of a stressed state of a fixing part in other embodiments of the present application.

Reference signs:

100, buffer part; 200, fixed part;

101, capsule body; 102, capsule body coat.

Detailed ways

In order to make the above-mentioned purpose, features and advantages of the present application more obvious and understandable, the specific implementation manners of the present application will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the application. However, the present application can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial" , "radial", "circumferential" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the application and simplifying the description, rather than indicating or implying the referred device or Elements must have certain orientations, be constructed and operate in certain orientations, and thus should not be construed as limiting the application.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

In this application, terms such as "installation", "connection", "connection" and "fixation" should be interpreted in a broad sense, for example, it can be a fixed connection or a detachable connection, unless otherwise clearly specified and limited. , or integrated; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise specified limit. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application according to specific situations.

In the present application, unless otherwise clearly specified and limited, a first feature being "on" or "under" a second feature may mean that the first and second features are in direct contact, or that the first and second features are indirect through an intermediary. touch. Moreover, "above", "above" and "above" the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "beneath" and "beneath" the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.

It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions are for the purpose of illustration only and are not intended to represent the only embodiment.

As shown in FIG. 1 , an embodiment of the present application provides a repair device for joint tissue, including a buffer part 100 and a fixation part 200. The buffer part 100 can be in a shrinking state or an expanded state. Cavity, the cavity is configured to be filled with a filling material to make the cushioning part 100 in the expanded state; one end of the fixing part 200 is arranged on the buffering part 100, and the other end of the fixing part 200 is The free end is used for fixing with the target tissue; the fixing part 200 has deformability and can be deformed under the action of external force, so as to allow the buffer part 100 to move within a predetermined range defined by the deformation of the fixing part 200 . Wherein, the joint tissue is not limited to the joint tissue of the human body or the joint tissue of other animals.

The shrinking state of the buffer part 100 means that the buffer part 100 can reduce its own volume. The atrophy shape of 100 in the shrunk state is not limited, as long as it meets the delivery requirements. For example, when the delivery device uses the delivery catheter to deliver the buffer part 100, the atrophied state of the buffer part 100 needs to be adapted to the tubular lumen of the delivery catheter. The strip is contained within the delivery catheter.

Correspondingly, the expanded state is relative to the shrunken state. The expanded state of the cushioning part 100 means that the buffering part 100 can expand its own volume. It can form an effective support between the acromion and the humeral head, maintain and increase the distance between the acromion and the humeral head, and play a therapeutic effect. It is enough to form an effective support between the peak and the humeral head. For example, the cushioning part 100 in the expanded state is a cystic structure with a certain thickness. Surface shape of intra-articular tissue structures.

The joint tissue can be joints in various parts such as shoulder joints and knee joints, and the repair device can also be a buffer unit 100 applied to shoulder joint treatment, or a buffer unit 100 applied to knee joints or other joint treatments. For the buffer unit 100 The type and structural form of , can be set according to the joint position actually used, which is not specifically limited.

The deformability of the fixed part 200 means that the fixed part 200 can cause its own shape to change when it is subjected to an external force. For example, referring to FIGS. Elongation or shortening, or changes in structural shape, thickness, etc. under the condition of external force, as for the specific shape change of the fixed part 200, it needs to depend on the specific situation of the external force actually received by the fixed part 200, so the fixed The shape change of the part 200 is not specifically limited. Moreover, the shape change of the fixed part 200 may have elastic capacity, or the morphological change of the fixed part 200 may not have elastic capacity, that is, the elastic capacity is not a key factor of the deformability of the fixed part 200. Therefore, this deformation of the fixed part 200 The morphological change caused by the ability should only be able to realize its own morphological change when the fixing part 200 is subjected to external force, satisfy the connection and allow the prosthetic device to move flexibly within the joint along with the movement of the joint.

For deformability and elastic ability at the same time, when the fixed part 200 is subjected to an external force and its own shape changes, the fixed part 200 can produce a response to the received external force according to the elastic ability of its own deformability. The resistance force, which is expressed as the reverse elastic force relative to the external force received. For example, when the fixed part 200 is subjected to an external force, the fixed part 200 will generate a reverse elastic force. The larger the reverse elastic force generated, the smaller the external force received by the fixing part 200, and the smaller the reverse elastic force generated by the fixing part 200 will be. When the fixing part 200 is connected to the buffer part 100, if the buffer part 100 receives a force from a certain position of the joint due to the movement of the joint in the joint tissue, the force will be transmitted to the fixing part 200 to form the force received by the fixing part 200. External force, and then the fixing part 200 generates a reverse elastic force relative to the received external force, and the reverse elastic force will continue to be applied to the buffer part 100 in reverse. When the buffer part 100 moves with the movement of the joint tissue, it can be pulled back to its original position by the reverse elastic force, so that the buffer part 100 can move flexibly in the joint tissue with the joint movement, but it does not The original position is the position where the cushioning part 100 is fixed in advance.

For deformability without elasticity, the fixed part 200 can change its shape after being subjected to an external force, but does not generate a reverse elastic force relative to the received external force. If the fixed part is a non-elastic member and thus The fixing part has stretchability, for example, the non-elastic fixing part with stretchability can be woven into a net-like structure, and the length of the net-like structure can be extended after being stretched by an external force. Therefore, when the fixing part 200 receives an external force and changes its own shape, the pulling effect on the buffer part 100 is more gentle. Wherein, the shape change of the fixing part 200 itself also has a range, that is, the fixing part 200 itself After the deformation reaches the limit, the shape change cannot continue. When the fixing part 200 is connected to the buffer part 100, if the buffer part 100 receives a force from a certain position of the joint due to the movement of the joint in the joint tissue, the force will be transmitted to the fixing part 200 to form the force received by the fixing part 200. External force, at this time, the fixed part 200 will undergo a shape change due to the external force received, and still form a connection with the buffer part 100 in a gentle connection state. During the movement of the buffer part 100 with the movement of the joint tissue, although the fixed part 200 has no reverse elastic force to pull the buffer part 100 back to its original position, the buffer part 100 is still connected by the fixed part 200, even if the buffer part The position of 100 changes, and it will not deviate from the limited range of movement of the buffer part 100 determined by the fixed part 200 due to its own deformable limit. 200 due to the predetermined range defined by the deformation. It can be understood that at this time, the fixed connection of the buffer part 100 can not only come from the connection of the fixed part 200, but also can come from the mutual pressing and fixing of the buffer part 100 and the joint tissue, which all help the buffer part 100 The original position is adapted to the movement of the joint, and the original position is the pre-fixed position of the cushioning part 100 .

The fixing part 200 that deformability does not have elastic ability can be determined based on the characteristics of the material of the fixing part 200, can also be determined based on the manufacturing structure of the fixing part 200, or can be determined based on both the manufacturing material and the manufacturing structure of the fixing part 200. It is determined that the fixing part 200 has a telescoping function. For example, at least a part of the fixing part 200 can be formed as a mesh structure, and this part of the mesh structure can be a columnar mesh or a sheet mesh. The mesh structure can eliminate or reduce the elastic capacity in the selection of materials, even if it has Elasticity is also so small that it can be ignored. When the non-elastic material forms a network structure, the network structure can change its shape after being subjected to external force due to the characteristics of gaps or pores in the structure. The specific changes are expressed in the size of the gaps or pores in the network structure, The shape changes microscopically, and the changes in the gaps or pores of the network structure can lead to changes in the overall shape of the network structure macroscopically. The proportion of the mesh structure on the fixing part 200 will lead to the actual deformability of the fixing part 200, that is, the larger the ratio of the mesh structure on the fixing part 200, the greater the deformability of the fixing part 200. As the proportion of the fixing part 200 becomes smaller, the deformability of the fixing part 200 becomes smaller. Even when the whole fixing part 200 has a net-like structure, the deformability of the fixing part 200 will be objectively maximized. Based on this cylindrical net or sheet net composed of a mesh structure, when the diameter of the cylindrical net is small, or the thickness of the sheet net is small, the cylindrical net or sheet net can be used as a connecting line or a connecting line. Bring to fix the buffer part 100, and play a good connection effect.

For the deformation ability without elastic ability, it can be defined by a unique test method, for example, in the state where one end of the fixed part 200 is constrained, the amount of shape change of the fixed part 200 under the same external force can characterize the fixed part 200 deformation ability. It is possible to more intuitively observe the morphological change of the fixed part 200. When the fixed part 200 is in the shape of a line or a belt, in the state where one end of the fixed part 200 is constrained, a pulling force is applied to the other end of the fixed part 200, and the same pulling force acts The change in length of the lower fixing part 200 can represent the deformability of the fixing part 200 , the greater the change in length, the greater the deformability represented, and the smaller the change in length, the smaller the deformability represented. Therefore, under the same external force, a greater amount of shape change of the fixing part 200 indicates that the fixing part 200 is more likely to be pulled and deformed, and it also indicates a larger range of movement restriction imposed on the buffer part 100 .

The fixing part 200 can choose to have the deformation ability with elastic ability according to the demand, and also can choose the deformation ability without elastic ability. , the elastic member can be elastically deformed under the action of an external force. There are many forms of the elastic member. For example, the elastic member can be used as an elastic thread or elastic belt with elastic ability. The material of the elastic member can be selected to have any elastic ability. After the elastic part is formed, its structural form is set as an elastic thread or an elastic belt. Both the elastic thread or the elastic belt have the characteristics of taking up little space. When the elastic thread or the elastic belt is implanted into the joint tissue along with the buffer part 100 Not only can it be smoothly stored in the delivery device of the delivery buffer 100, but also when the elastic wire or elastic belt is implanted into the shoulder joint of the human body, it can occupy a very small space in the tissue of the shoulder joint, reducing the discomfort caused by the human body , it is also possible to connect the buffer part 100 with a very small fluctuation state during the movement of the buffer part 100, so as to prevent the buffer part 100 from deviating from its original position. In addition, the elastic member can also adopt other structural forms, such as a sheet, as long as it can meet the connection to the buffer part 100, allow the buffer part 100 to move within a limited range, and keep the connection to the buffer part 100. However, the actual structural form of the elastic member is not a key factor affecting the stable connection of the buffer part 100 .

The buffer part 100 is a buffer part 100, one end of the elastic wire is connected to the surface of the buffer part 100, and the other end is used to connect to the humeral head or acromion. The buffer part 100 is a structure of the buffer part 100 applied to the shoulder joint. The buffer part 100 is an expandable and contractible structure. Generally, the buffer part 100 can form a structure that meets the internal tissue space filling and fit of the shoulder joint in an expanded state. The expanded state can be realized by filling lubricating fluid, which is generally physiological saline, and the physiological saline in the buffer part 100 can play a supporting role on the one hand, and the lubricating fluid props up the buffer part 100 to define the shape of the buffer part 100 . On the other hand, because the biological characteristics of physiological saline are similar to those of human body fluids, it can be ensured that after the cushioning part 100 is implanted in the tissue of the shoulder joint, the inside and outside of the cushioning part 100 have the same osmotic pressure, preventing the buffering part 100 from breaking and avoiding the shock of the buffer. Body rejection occurs following rupture of the portion 100 .

After the cushioning part 100 is implanted into the tissue of the shoulder joint, it can be placed between the humeral head and the acromion. The implantation of the buffering part 100 can maintain and increase the distance between the acromion and the humeral head, and maintain the distance between the humeral head and the tendon. The fracture surface of the rotator cuff acts as a "lever" to prevent the impact of the damaged rotator cuff and the bony structure of the acromion, so as to increase the stability of the glenohumeral joint and reduce the downward pressure of the acromion, so as to relieve pain. Purpose, and can reduce the upward movement of the humeral head, increase the shoulder-humeral distance, increase the abduction arm of the shoulder joint, and improve the mobility of the shoulder joint.

Therefore, after the buffering part 100 and the fixing part 200 are implanted into the tissue of the shoulder joint, one end of the elastic wire is connected to the buffering part 100, and the other end can be used to connect the humeral head or acromion, such as in the humerus Head punching connection or rivet connection and so on. After the cushioning part 100 is fixed in the tissue of the shoulder joint, along with the movement of the shoulder joint, the cushioning part 100 will also adapt to the activity state of the joint and take place corresponding activities. The force will be transmitted to the fixed part 200 to form the external force received by the fixed part 200, and then the fixed part 200 will generate a reverse elastic force relative to the received external force, and the reverse elastic force will continue to be applied in the opposite direction On the buffer part 100, the buffer part 100 can be pulled back to its original position by this reverse elastic force, so that the buffer part 100 can move flexibly in the joint tissue with the joint movement, but it does not leave its original position. Based on this The limited flexible movement provided for the buffer part 100 can reduce the friction between the buffer part 100 and the inner acromion of the shoulder joint, humeral head, etc., and improve the service life of the buffer part 100 . The application is not limited to the cushioning part 100 in the shoulder joint, but also has the same technical effect for the cushioning part 100 applied to other joints.

Regarding the material of the buffer part 100 and the fixing part 200, the material of the buffer part 100 can be polyethylene PE, polyester PET (polyethylene terephthalate), polytetrafluoroethylene PTFE, polypropylene PP, polypropylene Amide PA, nickel-titanium alloy or stainless steel, for example, the buffer part 100 is made of ultra-high molecular weight polyethylene, and the ultra-high molecular weight polyethylene has good wear resistance, which can ensure that the buffer part 100 has good wear resistance and has a longer service life. Specifically, the cushioning part 100 may be formed by weaving silk threads made of ultra-high molecular weight polyethylene. The material of the fixing part 200 may be ultra-high molecular weight polyethylene, polyurethane, polyethylene terephthalate, thermoplastic rubber or thermoplastic vulcanized rubber.

Referring to FIGS. 1 to 10 , in one embodiment, the cushioning part 100 includes a bladder 101 and a bladder cover 102 , and the surface of the bladder 101 is braided to form the bladder cover 102 . The capsule casing 102 includes an inner space, the capsule body 101 is disposed in the interior space, the fixing part 200 is disposed on the surface of the capsule casing 102, and between the capsule body 101 and the capsule casing 102 There is an active space to allow the cushioning part 100 to move in the active space, that is, the capsule 101 is in a movable state in the capsule jacket 102, so that the cushioning part 100 can move according to the interaction between the acromion and the humerus. The state can self-adjust its position in a limited activity space, which has the effect of flexible buffering. Alternatively, the capsule casing 102 is fixed on the surface of the capsule body 101 , and the fixing part 200 is disposed on the surface of the capsule casing 102 . Alternatively, the cushioning part 100 includes a capsule body 101 and a capsule casing 102 , the fixing part 200 is disposed on the surface of the capsule body 101 , and the surface of the capsule body 101 constitutes the capsule casing 102 by electrostatic spraying.

Capsule cover 102 is fixedly sleeved outside the buffer part 100. It can be understood that the capsule cover 102 is a coating coat formed on the surface of the buffer part 100. The coating coat is formed strictly according to the contour of the buffer part 100 surface, and is compatible The surface of the buffer part 100 forms a tight and complete fit. For example, the surface of the buffer part 100 is electrostatically sprayed to form the capsule cover 102, and the electrostatically sprayed capsule cover 102 is tightly and completely attached to the buffer part. 100 surface coating.

In addition, the capsule cover 102 can also be an independent self-supporting structure, that is, it does not necessarily need to be attached to the surface of the cushioning part 100 to form the capsule cover 102, but is similar to a sleeve-like structure, which is set on The outer surface of the cushioning part 100, and at least a part or all of it forms a connection with the surface of the buffering part 100. One way is to weave the bladder cover 102 on the surface of the buffering part 100 by braiding wires. The braided The method can connect the entire area of the capsule cover 102 with the surface of the cushioning part 100 one-to-one, or connect multiple key areas or key points between the capsule cover 102 and the cushioning part 100, so that the capsule cover 102 can also be stabilized. The fixed sleeve is arranged on the surface of the buffer part 100 to form a structure similar to an integral body.

The cushioning part 100 and the bladder cover 102 can all be formed by weaving, and the braiding form can be that the buffering part 100 and the bladder cover 102 are woven separately, and then the bladder cover 102 is sheathed on the surface of the buffering part 100, and the bladder The entire area of the jacket 102 is connected one-to-one with the surface of the cushioning part 100, or connects multiple key areas or key points between the capsule jacket 102 and the buffering part 100. In addition, the buffering part 100 and the cushioning part 100 can be connected The bladder cover 102 is integrally braided and formed by braiding wires. The integrated weaving method provides a more stable connection between the bladder cover 102 and the cushioning part 100, and the fixing part 200 and the bladder cover 102 can be integrally braided by braiding wires. Forming, the integrally formed weaving method also provides a more stable connection between the fixed part 200 and the capsule cover 102, and the cushioning part 100, the fixed part 200 and the capsule cover 102 can also be integrally woven and formed to provide A more stable connection among the cushioning part 100 , the fixing part 200 and the capsule cover 102 .

For the material of the capsule body cover 102, the material of the capsule body cover 102 can be ultra-high molecular weight polyethylene or titanium alloy. In the case of polyethylene or titanium alloy, the outer layer of the capsule body 102 is equivalent to the outer layer of the repair device, so that the repair device has good wear resistance. At this time, the wear resistance of the repair device no longer depends on the buffer part 100, which can allow The cushioning portion 100 is made of other materials that do not have good wear resistance, such as lower cost, as long as they can satisfy filling and not materials with good wear resistance. Regardless of whether the capsule jacket 102 is outside or the cushioning portion 100 itself is outside, its mechanical properties need to have good breaking strength, such as tensile (breaking) capacity above 100N, and wear resistance needs to be able to withstand at least 5 million times of friction , the surface roughness requires smoothness to reduce wear caused by friction between it and adjacent bone structures.

The present application also provides a prosthesis system, including the prosthetic device, and the prosthesis system further includes a delivery device connected to the prosthetic device for transporting the prosthetic device. The function of the delivery device is to smoothly transport the repair device into the tissue of the joint tissue to realize the implantation of the repair device. For example, for the shoulder joint, the repair device can be smoothly implanted into the tissue of the shoulder joint, and for the knee joint. Said that the prosthetic device can be successfully implanted in the tissue of the knee joint. The conveying device can adopt an existing device structure, which is not limited here.

The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

The above-mentioned embodiments only represent several implementation modes of the present application, and the description thereof is relatively specific and detailed, but it should not be construed as limiting the scope of the patent for the invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of protection of the patent application should be based on the appended claims.

Claims

A repair device for joint tissue, characterized in that it comprises:

a cushion, which may be in a deflated state or an expanded state, said cushion comprising a cavity configured for filling with an inflation substance to bring said cushion into said expanded state; and

A fixing part, one end of the fixing part is arranged on the buffer part, and the other end is a free end for fixing with the target tissue; the fixing part has deformability and can be deformed under the action of an external force to allow the buffer part It moves within a predetermined range defined by the deformation of the fixing part.
The device for repairing joint tissue according to claim 1, wherein the fixing part includes an elastic member, and the elastic member can be elastically deformed under the action of an external force.
The device for repairing joint tissue according to claim 2, wherein the elastic member comprises at least one elastic wire.
The device for repairing joint tissue according to claim 2, wherein the elastic member comprises at least one elastic band.
The device for repairing joint tissue according to claim 1, wherein the fixing part is a non-elastic member, and the fixing part has the ability of stretching and contracting.
The device for repairing joint tissue according to claim 1, wherein the material of the cushioning part is polyethylene, polyester, polytetrafluoroethylene, polypropylene, polyamide, nickel-titanium alloy or stainless steel.
The device for repairing joint tissue according to claim 1, wherein the material of the fixing part is ultra-high molecular weight polyethylene, polyurethane, polyethylene terephthalate, thermoplastic rubber or thermoplastic vulcanizate.
The device for repairing joint tissue according to any one of claims 1-7, characterized in that, the cushioning part comprises a capsule and a capsule cover, and the surface of the capsule is braided to form the Capsular coat.
The repair device for joint tissue according to claim 8, characterized in that, the capsule casing includes an inner space, the capsule is arranged in the inner space, and the fixing part is arranged in the capsule casing There is an active space between the capsule body and the outer shell of the capsule body to allow the buffer part to move in the active space.
The device for repairing joint tissue according to claim 8, wherein the outer covering of the capsule is fixed on the surface of the capsule.
The device for repairing joint tissue according to claim 10, wherein the fixing part is arranged on the surface of the outer capsule.
The device for repairing joint tissue according to claim 8, characterized in that, the capsule body and the capsule casing are integrally braided and formed by braiding wires.
The device for repairing joint tissue according to claim 8, characterized in that, the fixation part and the capsule sheath are formed integrally by braiding wires.
The device for repairing joint tissue according to any one of claims 1-7, characterized in that, the cushioning part includes a capsule and a capsule casing, and the fixing part is arranged on the surface of the capsule.
The device for repairing joint tissue according to claim 14, characterized in that, the surface of the capsule is electrostatically sprayed to form the casing of the capsule.