CN113749818A

CN113749818A - Prosthetic device for joint tissue

Info

Publication number: CN113749818A
Application number: CN202111022545.9A
Authority: CN
Inventors: 刘琛; 常兆华; 聂京闽; 岳斌; 葛亮
Original assignee: Shanghai Jingjie Medical Technology Co ltd
Current assignee: Shanghai Jingjie Medical Technology Co ltd
Priority date: 2021-09-01
Filing date: 2021-09-01
Publication date: 2021-12-07
Also published as: WO2023029734A1

Abstract

The present invention relates to a prosthetic device for joint tissue, comprising a cushioning portion, which may assume an atrophic state or an expanded state, said cushioning portion comprising a cavity configured for being filled with an filling substance to bring said cushioning portion into said expanded state; the repairing device also comprises a fixing part which is arranged on the buffer part; the fixing part has deformability, and can deform under the action of external force, so that the buffer part is allowed to move within a predetermined range limited by deformation of the fixing part. Above-mentioned a prosthetic devices for articular tissue, the use of fixed part can guarantee that buffer portion can enough move in a flexible way along with joint activity in articular tissue, but not too break away from the normal position, based on this kind of nimble motion that has the restriction scope that provides for buffer portion, can reduce the friction of buffer portion and shoulder joint interior shoulder peak, humeral head etc. position, improves buffer portion's life.

Description

Prosthetic device for joint tissue

Technical Field

The invention relates to the technical field of medical instruments, in particular to a repair device for joint tissues.

Background

The rotator cuff is a muscle-tendon structure connecting the scapula and the humeral head, and is located on the outer layer of the shoulder joint capsule and the inner layer of the deltoid. The rotator cuff consists of a front rotator cuff (subscapularis), an upper rotator cuff (supraspinatus and subscapularis) and a rear rotator cuff (subscapularis and teres minor), and the rotator cuff has certain functions of inward rotation, outward rotation and outward expansion of the upper arm, and has the main functions of stabilizing the position of the humeral head on the glenoid during movement, maintaining the arm of force of muscles, and avoiding pain caused by the humeral head moving upwards and impacting the acromion. Therefore, the rotator cuff plays an extremely important role in maintaining the stability of the shoulder joint and in moving the shoulder joint.

However, with age, repeated shoulder joint movement for a long time, hyperosteogeny under the shoulder or repeated violent movement may cause abrasion and tearing of soft tissues under the shoulder (joint bursa and rotator cuff), so that the stability and mobility of the humeral head are damaged, the arm of the patient cannot be abducted or lifted during the shoulder joint movement, severe pain is caused by impact between the sclerotin or the sclerotin and the rotator cuff, and the patient cannot sleep at night due to pain, thereby seriously affecting the quality of life and the self-care ability.

At present, the pain caused by rotator cuff injury can be treated by implanting a prosthesis (such as a balloon), the prosthesis can be implanted between the acromion and the humeral head to maintain and increase the distance between the acromion and the humeral head, and play a role of a 'lever' between the humeral head and the fracture surface of the tendon, so as to prevent the injured rotator cuff from colliding with the bony structure of the acromion, increase the stability of the glenoid joint, reduce the downward pressure of the acromion, thereby relieving pain, reducing the upward movement of the humeral head, increasing the shoulder-humeral distance, increasing the outward tension arm of the shoulder joint, and rapidly improving the mobility of the shoulder joint.

However, after the prosthesis is implanted into the shoulder joint, the prosthesis can rub against the humeral head along with the movement of the shoulder joint, and the prosthesis can break due to frequent rubbing over time, thereby reducing the service life of the prosthesis.

Disclosure of Invention

In view of the above, it is necessary to provide a prosthetic device for joint tissue, which addresses the problem of a short service life of a prosthesis for joint tissue.

The present invention provides a prosthetic device for joint tissue, comprising:

a cushioning portion capable of assuming an atrophic state or an expanded state, the cushioning portion comprising a cavity configured for filling with an inflation substance to assume the expanded state;

one end of the fixing part is arranged on the buffer part, and the other end of the fixing part is a free end and is used for fixing with a target tissue; the fixing part has deformability, and can deform under the action of external force, so that the buffer part is allowed to move within a predetermined range limited by deformation of the fixing part.

In one embodiment, the fixing portion includes an elastic member capable of being elastically deformed by an external force.

In one embodiment, the elastic member comprises at least one elastic thread or at least one elastic band.

In one embodiment, the fixing part is a non-elastic part and has a telescopic capability.

In one embodiment, the buffer part is made of polyethylene, polyester, polytetrafluoroethylene, polypropylene, polyamide, nickel-titanium alloy or stainless steel; and/or the fixing part is made of ultra-high molecular weight polyethylene, polyurethane, polyethylene terephthalate, thermoplastic rubber or thermoplastic vulcanized rubber.

In one embodiment, the buffer part comprises a capsule body and a capsule body coat, and the surface of the capsule body is woven by a knitting wire to form the capsule body coat.

In one embodiment, the capsule housing comprises an inner space, the capsule is arranged in the inner space, the fixing part is arranged on the surface of the capsule housing, and an activity space is arranged between the capsule and the capsule housing to allow the buffer part to move in the activity space.

In one embodiment, the capsule housing is fixed to a surface of the capsule, and the fixing portion is disposed on the surface of the capsule housing.

In one embodiment, the capsule body and the capsule body outer sleeve are integrally formed by weaving through a weaving wire; and/or the fixing part and the bag body outer sleeve are integrally woven and formed through a weaving wire.

In one embodiment, the buffer part comprises a capsule body and a capsule body outer sleeve, the fixing part is arranged on the surface of the capsule body, and the surface of the capsule body forms the capsule body outer sleeve through electrostatic spraying.

According to the repair device for joint tissues, the fixing part can ensure that the buffer part can move flexibly along with the movement of the joint in the joint tissues and does not excessively deviate from the original position, and based on the flexible movement with the limited range provided for the buffer part, on one hand, the buffer part can be ensured to adapt to the relative position change of the humerus head and the shoulder peak in the shoulder joint movement process, so that the buffer part is prevented from being blocked by the movement of the humerus head, on the other hand, the friction between the buffer part and the shoulder peak, the humerus head and the like in the shoulder joint can be reduced, and the service life of the buffer part is prolonged.

Drawings

FIG. 1 is a schematic structural diagram of a prosthetic device according to an embodiment of the present invention;

FIG. 2 is a schematic view of a fixing portion in an unstressed state according to an embodiment of the present disclosure;

FIG. 3 is an enlarged view of the fixing portion shown in FIG. 2 in an unstressed state;

FIG. 4 is a diagram illustrating a stressed state of a fixing portion according to an embodiment of the present invention;

FIG. 5 is an enlarged view of the fixing portion shown in FIG. 2;

FIG. 6 is a schematic diagram of a layer structure of a prosthetic device according to another embodiment of the present invention;

FIG. 7 is a schematic, enlarged, plan view of the prosthetic device of FIG. 6;

FIG. 8 is a schematic structural view of a prosthetic device according to another embodiment of the present invention;

FIG. 9 is a schematic view of a fixing portion in an unstressed state according to another embodiment of the present disclosure;

fig. 10 is a schematic view of a stressed state of a fixing portion according to another embodiment of the invention.

Reference numerals:

100. a buffer section; 200. a fixed part;

101. a capsule body; 102. the bag body is sleeved outside.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. 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. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1, an embodiment of the present invention provides a repair device for joint tissue, including a buffer portion 100, a fixing portion 200, the buffer portion 100 being capable of assuming an atrophic state or an expanded state, the buffer portion 100 including a cavity configured to be filled with an inflation substance to allow the buffer portion 100 to assume the expanded state; one end of the fixing part 200 is arranged on the buffer part 100, and the other end of the fixing part 200 is a free end for fixing with a target tissue; the fixing portion 200 has a deformation capability, and is deformable by an external force to allow the cushioning portion 100 to move within a predetermined range defined by the deformation of the fixing portion 200. The joint tissue is not limited to the joint tissue of a human body or the joint tissue of other animals.

The shrinking state of the buffer part 100 indicates that the buffer part 100 can shrink its volume, the shrinking degree mainly depends on the transportation requirement, it is ensured that the volume of the buffer part 100 is shrunk to be capable of being accommodated in the transportation device and being transported to the predetermined position smoothly, the shrinking shape of the buffer part 100 in the shrinking state is not limited as long as the transportation requirement is met, for example, when the transportation device transports the buffer part 100 by using the transportation catheter, the shrinking state of the buffer part 100 needs to be matched with the tubular inner cavity of the transportation catheter, and the buffer part is accommodated in the transportation catheter in a long strip shape.

Accordingly, the expansion state is relative to the atrophy state, the expansion state of the buffer portion 100 indicates that the buffer portion 100 can expand its own volume, the expansion degree mainly depends on the repair requirement of the shoulder joint, the volume of the buffer portion 100 is ensured to be expanded to form effective support between the shoulder peak and the humeral head, the distance between the shoulder peak and the humeral head is maintained and increased, and the treatment effect is achieved, the expansion shape of the buffer portion 100 in the expansion state is not limited as long as the effective support between the shoulder peak and the humeral head is formed, for example, the buffer portion 100 in the expansion state is a sack-shaped structure with a certain thickness, and the two side surfaces of the sack-shaped structure have surface shapes which are gently attached to the tissue structures in the shoulder joint, such as the tendon, the humeral head, the shoulder peak, and the like.

The joint tissue may be a joint of each part such as a shoulder joint or a knee joint, the prosthetic device may be a cushion part 100 applied to treatment of a shoulder joint or a cushion part 100 applied to treatment of a knee joint or other joints, and the type and configuration of the cushion part 100 may be set according to a joint position actually used, which is not particularly limited.

The deformation capability of the fixing portion 200 indicates that the fixing portion 200 may cause a form change under an external force, for example, as shown in fig. 2 to 5, the form change of the fixing portion 200 may be represented as an elongation or a contraction under the external force, or as a change in structural shape, thickness, etc. under the external force, as to how the form change of the fixing portion 200 is, a specific situation depending on the external force actually applied to the fixing portion 200 is required, and therefore, the form change of the fixing portion 200 is not particularly limited. Furthermore, the form change of the fixing part 200 may or may not have the elastic capability, that is, the elastic capability is not a key factor of the deformation capability of the fixing part 200, and therefore, the form change caused by the deformation capability of the fixing part 200 may be sufficient to connect and allow the prosthetic device to flexibly move in the joint along with the movement of the joint while the fixing part 200 is subjected to the external force.

When the fixing portion 200 receives an external force and changes its form, the fixing portion 200 may generate a counter force to the received external force according to the elastic capability of its own deformation capability, and the counter force may be expressed as a reverse elastic force to the received external force. For example, when the fixing portion 200 receives an external force, the fixing portion 200 generates a reverse elastic force capable of resisting the external force, and the larger the external force received by the fixing portion 200 is, the larger the reverse elastic force generated by the fixing portion 200 is, the smaller the external force received by the fixing portion 200 is, and the smaller the reverse elastic force generated by the fixing portion 200 is. When the fixing portion 200 is connected to the cushioning portion 100, if the cushioning portion 100 receives a force from a certain position of the joint due to the movement of the joint in the joint tissue, the force is transmitted to the fixing portion 200 to form an external force applied to the fixing portion 200, and then the fixing portion 200 generates a reverse elastic force relative to the applied external force, and the reverse elastic force is continuously applied to the cushioning portion 100 in a reverse direction. The cushioning portion 100 can be pulled back to the original position by the reverse elastic force during the movement of the joint tissue, so that the cushioning portion 100 can move flexibly along with the movement of the joint in the joint tissue without departing from the original position, i.e. the position where the cushioning portion 100 is fixed in advance.

In the case where the fixing portion 200 does not have the elastic ability in the deformation ability, the shape thereof may be changed by an external force, but the elastic force in the opposite direction to the external force is not generated, and if the fixing portion is a non-elastic member and the fixing portion has the elastic ability, for example, the non-elastic fixing portion having the elastic ability may be a net structure which is stretched by an external force and has a longer length. Therefore, the pulling action of the fixing portion 200 on the cushioning portion 100 is more gradual in the process of the fixing portion 200 receiving the external force and generating the self-form change, wherein the self-form change of the fixing portion 200 also has a range, that is, the form change cannot be continued after the self-deformation of the fixing portion 200 reaches the limit. When the fixing part 200 is coupled to the cushioning part 100, if the cushioning part 100 receives an acting force from a certain position of the joint due to the movement of the joint in the joint tissue, the acting force is transmitted to the fixing part 200 to form an external force applied to the fixing part 200, and at this time, the fixing part 200 is changed in form due to the applied external force and is coupled to the cushioning part 100 in a gentle coupling state. In the process that the buffer part 100 moves along with the movement of the joint tissues, although the fixing part 200 does not have the reverse elastic force for pulling the buffer part 100 to return to the original position, the buffer part 100 is still connected with the fixing part 200, and even if the position of the buffer part 100 changes, the buffer part 100 does not depart from the movement limit range of the buffer part 100, which is determined by the deformation limit of the fixing part 200, and the movement limit range is also the range in which the buffer part 100 can move, thereby forming the preset range defined by the deformation of the fixing part 200. It is understood that the fixing connection of the cushioning portion 100 can be not only from the connection of the fixing portion 200, but also from the mutual pressing fixation of the cushioning portion 100 and the joint tissue, which both help the cushioning portion 100 not to be excessively separated from the original position, i.e. the position where the cushioning portion 100 is fixed in advance, to adapt to the movement of the joint.

The fixing portion 200 having no elastic ability in terms of deformability may be determined based on the characteristics of the material used to fabricate the fixing portion 200, may be determined based on the fabrication structure of the fixing portion 200, or may be determined based on the material and the fabrication structure of the fixing portion 200 in combination to determine that the fixing portion 200 has the expansion and contraction function. For example, the fixing part 200 may be formed on itself at least in a part of a mesh structure, which may be a cylindrical mesh or a sheet-like mesh, and the mesh structure may eliminate or reduce the elastic ability in material selection, and the elastic ability is so small as to be negligible. When the non-elastic material forms the net-shaped structure, the net-shaped structure can change in form after being subjected to an external force due to the characteristics of gaps or pores in the structure, the specific change is represented as microscopic change in the size and shape of the gaps or pores in the net-shaped structure, and the change in form of the whole net-shaped structure can be macroscopically caused by the change in the gaps or pores in the net-shaped structure. The ratio of the mesh structure in the fixing portion 200 results in the actual deformability of the fixing portion 200, that is, the larger the ratio of the mesh structure in the fixing portion 200, the larger the deformability of the fixing portion 200, the smaller the ratio of the mesh structure in the fixing portion 200, the smaller the deformability of the fixing portion 200, and the objective maximization of the deformability of the fixing portion 200 is achieved even when the fixing portion 200 is entirely mesh-structured. Based on such a cylindrical net or a sheet net composed of a net structure, when the diameter of the cylindrical net is small or the thickness of the sheet net is small, the cylindrical net or the sheet net can be completely used as a connecting line or a connecting belt to fix the cushioning portion 100, and a good connecting effect is achieved.

The deformability without elasticity can be defined by a specific test method, for example, the deformability of the fixing portion 200 can be represented by the form change of the fixing portion 200 under the same external force in a state that one end of the fixing portion 200 is restrained. When the shape variation of the fixing portion 200 can be more visually observed, the fixing portion 200 may be in a linear or strip shape, and a tensile force is applied to the other end of the fixing portion 200 in a state where one end of the fixing portion 200 is constrained, and the length variation of the fixing portion 200 under the same tensile force may represent the deformation capability of the fixing portion 200, and the larger the length variation is, the larger the deformation capability represented is, and conversely, the smaller the length variation is, the smaller the deformation capability represented is. Therefore, the larger the amount of change in the form of the fixing portion 200 under the same external force, the more easily the fixing portion 200 is pulled and deformed, and the larger the movement restriction range of the cushioning portion 100.

The fixing portion 200 can be selected to have a deformation capability with an elastic capability or a deformation capability without an elastic capability according to the requirement, for example, when the fixing portion 200 is selected to have a deformation capability with an elastic capability, the fixing portion 200 can be an elastic member capable of elastically deforming under an external force, the elastic member can be in various forms, for example, the elastic member can be an elastic wire or an elastic band with an elastic capability, the material of the elastic member itself can be any material with an elastic capability, the structural form of the elastic member is set to be an elastic wire or an elastic band after the elastic member is formed, the elastic wire or the elastic band has a characteristic of small occupied space, when the elastic wire or the elastic band is implanted into the joint tissue along with the buffer portion 100, the elastic wire or the elastic band can be smoothly accommodated in the conveying device for conveying the buffer portion 100, and when the elastic wire or the elastic band is implanted into the shoulder joint of the human body, it is possible to occupy a very small space in the tissues of the shoulder joint, reduce discomfort caused by the human body, and prevent the cushion portion 100 from being out of position by connecting the cushion portion 100 in a very small fluctuation state during the movement of the cushion portion 100. Besides, the elastic member may also take other structural forms, such as a sheet shape, etc., as long as it can satisfy the connection to the cushioning portion 100, allow the cushioning portion 100 to move within a limited range, and maintain the connection to the cushioning portion 100, and the actual structural form of the elastic member is not a critical factor affecting the stable connection of the cushioning portion 100.

The cushioning portion 100 is a cushioning portion 100, and one end of the elastic thread is connected to a surface of the cushioning portion 100, and the other end is used for connecting a humeral head or a shoulder. Buffer 100 is the buffer 100 structure that is applied to the shoulder joint, and buffer 100 is the structure of expandable contraction, and general buffer 100 can form under the state of expansion and accord with shoulder joint internal tissue space filling and laminating, and the expansion state of buffer 100 can be realized through filling lubricating liquid, and lubricating liquid generally is normal saline, and normal saline in buffer 100 can play the supporting role on the one hand, and lubricating liquid props up buffer 100 in order to inject the appearance of buffer 100. On the other hand, since the biological properties of the physiological saline are similar to those of the body fluid of the human body, the same osmotic pressure can be ensured between the inside and the outside of the cushioning portion 100 after the cushioning portion 100 is implanted into the tissues of the shoulder joint, so that the cushioning portion 100 is prevented from being broken, and the human body rejection after the cushioning portion 100 is broken is avoided.

After the buffer part 100 is implanted into the tissue of the shoulder joint, the buffer part 100 can be arranged between the humeral head and the acromion, and the implantation of the buffer part 100 can maintain and increase the distance between the acromion and the humeral head, and play a role of a 'lever' between the humeral head and the fracture surface of the tendon, so as to prevent the damaged rotator cuff from colliding with the bony structure of the acromion, thereby increasing the stability of the glenohumeral joint, reducing the downward pressure of the acromion, achieving the purpose of relieving pain, reducing the upward movement of the humeral head, increasing the shoulder-brachial distance, increasing the abduction force arm of the shoulder joint, and improving the mobility of the shoulder joint.

Therefore, after the cushioning portion 100 and the fixing portion 200 are implanted into the tissue of the shoulder joint, one end of the elastic thread is connected to the cushioning portion 100, and the other end thereof can be used to connect to the humeral head or the acromion, such as punching or riveting on the humeral head. After the cushioning part 100 is fixed in the tissue of the shoulder joint, the cushioning part 100 moves correspondingly according to the movement state of the shoulder joint, and at this time, the cushioning part 100 receives the acting force from a certain position in the joint, the force is transmitted to the fixing portion 200 to form an external force applied to the fixing portion 200, and then the fixing portion 200 generates a reverse elastic force with respect to the applied external force, the reverse elastic force is continuously applied to the cushioning portion 100 in the reverse direction, and the cushioning portion 100 can be pulled back by the reverse elastic force, so that the cushioning portion 100 can move flexibly along with the joint movement in the joint tissue, but not out of position, the friction between the cushioning portion 100 and the shoulder inside the shoulder joint, the humeral head, etc. can be reduced and the life of the cushioning portion 100 can be increased based on the flexible movement with the limited range provided for the cushioning portion 100. The same technical effects are obtained not only for the cushion unit 100 applied to the shoulder joint but also for the cushion unit 100 applied to another joint.

As for the materials of the buffer portion 100 and the fixing portion 200, the buffer portion 100 may be made of polyethylene PE, polyester PET (polyethylene terephthalate), polytetrafluoroethylene PTFE, polypropylene PP, polyamide PA, nitinol, or stainless steel, for example, the buffer portion 100 is made of ultra-high molecular weight polyethylene, which has good wear resistance, and can ensure that the buffer portion 100 has good wear resistance, and the buffer portion 100 has a longer service life, and specifically, the buffer portion 100 may be formed by weaving threads made of ultra-high molecular weight polyethylene. The fixing portion 200 may be made of ultra-high molecular weight polyethylene, polyurethane, polyethylene terephthalate, thermoplastic rubber, or thermoplastic vulcanized rubber.

Referring to fig. 1 to 10, in one embodiment, the buffer portion 100 includes a capsule 101 and a capsule jacket 102, and the surface of the capsule 101 is woven by a knitting wire to form the capsule jacket 102. Capsule body coat 102 contains the inner space, capsule body 101 sets up in the inner space, fixed part 200 sets up the surface of capsule body coat 102, a living space has between capsule body 101 and capsule body coat 102 to allow buffer 100 to move in this living space, promptly capsule 101 is in mobilizable state in capsule body coat 102 for buffer 100 can be according to the self-adjusting position of the interact state of acromion and humerus in limited living space, plays the effect of nimble buffering. Alternatively, capsule housing 102 is secured to a surface of capsule 101 and retainer 200 is disposed on a surface of capsule housing 102. Alternatively, the buffering portion 100 includes a capsule 101 and a capsule housing 102, the fixing portion 200 is disposed on a surface of the capsule 101, and the surface of the capsule 101 forms the capsule housing 102 by electrostatic spraying.

The capsule body outer sleeve 102 is fixedly sleeved outside the buffer portion 100, and it is understood that the capsule body outer sleeve 102 is a coating outer sleeve formed on the surface of the buffer portion 100, the coating outer sleeve is formed according to the contour of the surface of the buffer portion 100, and forms a close and complete fit with the surface of the buffer portion 100, for example, the capsule body outer sleeve 102 is formed on the surface of the buffer portion 100 by electrostatic spraying, and the capsule body outer sleeve 102 subjected to electrostatic spraying is a coating layer closely and completely fit with the surface of the buffer portion 100.

In addition, bladder shell 102 may be a structure that is self-supporting, that is, it does not necessarily need to be attached to the surface of buffer 100 to form bladder shell 102, but may be a structure that is similar to a sleeve-like structure, and is sleeved outside the surface of buffer 100 and is at least partially or completely connected to the surface of buffer 100, and one way is to weave bladder shell 102 on the surface of buffer 100 by weaving lines, and the weaving way may be to connect the entire area of bladder shell 102 to the surface of buffer 100 in a one-to-one manner, or to connect a plurality of critical areas or points of bladder shell 102 to buffer 100, so that bladder shell 102 can also be stably fixed to the surface of buffer 100 to form a structure similar to a whole body.

Buffer 100 and capsule housing 102 may be formed by weaving, wherein the weaving may be performed by separately weaving buffer 100 and capsule housing 102, and then covering capsule housing 102 on the surface of buffer 100, and connecting the whole area of capsule housing 102 to the surface of buffer 100 in a one-to-one manner, or connecting multiple key regions or points of capsule housing 102 and buffer 100, in addition, buffer 100 and capsule housing 102 may be integrally woven and formed by weaving wires, the integrally woven manner provides more stable connection between capsule housing 102 and buffer 100, fixing portion 200 and capsule housing 102 may be integrally woven and formed by weaving wires, the integrally woven manner also provides more stable connection between fixing portion 200 and capsule housing 102, and similarly, buffer 100, fixing portion 200 and capsule housing 102 may be integrally woven and formed, to provide a more stable connection between cushioning portion 100, retainer portion 200 and bladder shell 102.

As for the material of capsule housing 102, the material of capsule housing 102 may be ultra-high molecular weight polyethylene or titanium alloy, and since capsule housing 102 is outside buffer unit 100, when capsule housing 102 is made of ultra-high molecular weight polyethylene or titanium alloy, capsule housing 102 is equivalent to the outer layer of the repair device, so that the repair device has good wear resistance, and the wear resistance of the repair device is not dependent on buffer unit 100, and buffer unit 100 may be allowed to be made of other materials that do not have good wear resistance, for example, the cost is lower, as long as the requirement of filling but not the material that has good wear resistance is met. Whether the outer bag 102 or the cushion portion 100 itself is outside, the outer bag needs to have good breaking strength in terms of mechanical properties, such as tensile (breaking) resistance of over 100N, wear resistance of at least 500 ten thousand times of friction, and smooth surface roughness, so as to reduce wear caused by friction between the outer bag and the adjacent bone structure.

The invention also provides a prosthesis system which comprises the repair device and a conveying device, wherein the conveying device is connected with the repair device and used for conveying the repair device. The conveying device is used for smoothly conveying the repairing device into tissues of joint tissues, so that the repairing device can be implanted, for example, for a shoulder joint, the repairing device can be smoothly implanted into the tissues of the shoulder joint, and for a knee joint, the repairing device can be smoothly implanted into the tissues of the knee joint. The conveying device may adopt an existing device structure, and is not limited herein.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A prosthetic device for joint tissue, comprising:

2. The prosthetic device for joint tissue according to claim 1, wherein the fixing portion comprises an elastic member capable of being elastically deformed by an external force.

3. The prosthetic device for joint tissue according to claim 2, wherein said elastic member comprises at least one elastic thread or at least one elastic band.

4. The prosthetic device for joint tissue according to claim 1, wherein the fixation portion is a non-elastic member and the fixation portion has a telescoping capability.

5. The prosthetic device for joint tissue according to claim 1, wherein the buffer portion is made of polyethylene, polyester, polytetrafluoroethylene, polypropylene, polyamide, nitinol, or stainless steel; and/or the fixing part is made of ultra-high molecular weight polyethylene, polyurethane, polyethylene terephthalate, thermoplastic rubber or thermoplastic vulcanized rubber.

6. The prosthetic device for joint tissue according to any one of claims 1 to 5, wherein the buffer portion comprises a balloon and a balloon cover, and a surface of the balloon is woven by a braided wire to constitute the balloon cover.

7. The prosthetic device for joint tissue according to claim 6, wherein the balloon casing includes an inner space, the balloon is disposed in the inner space, the fixing portion is disposed on a surface of the balloon casing, and a moving space is provided between the balloon and the balloon casing to allow the buffer portion to move therein.

8. The prosthetic device for joint tissue according to claim 6, wherein the balloon outer cover is fixed to a surface of the balloon, and the fixing portion is provided at a surface of the balloon outer cover.

9. The prosthetic device for joint tissue according to claim 6, wherein the balloon and the balloon cover are integrally formed by knitting a knitting wire; and/or the fixing part and the bag body outer sleeve are integrally woven and formed through a weaving wire.

10. The prosthetic device for joint tissue according to any one of claims 1 to 5, wherein the buffer portion comprises a capsule and a capsule housing, the fixation portion is provided on a surface of the capsule, and the capsule housing is formed on the surface of the capsule by electrostatic spraying.