Joint implant

Abstract

The invention discloses a joint implant, and relates to the technical field of joint implantation, the joint implant comprises an implantation main body and a liquid inlet main body, the implantation main body is internally provided with a main body inner cavity, the liquid inlet main body extends into the main body inner cavity from one side, the liquid inlet main body is hermetically connected with the implantation main body, the liquid inlet main body is internally provided with a liquid inlet channel, and the liquid inlet channel is communicated with the implantation main body. One end of the liquid inlet channel is communicated with the outside, the other end of the liquid inlet channel is communicated with the main body inner cavity through a liquid outlet hole in the liquid inlet main body, and after the main body inner cavity is filled with a medium, the liquid inlet channel can be closed under the action of medium pressure to achieve sealing. After being filled with a medium, the self-sealing function can be achieved, and durability and reliability of the treatment effect are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of joint implantation, in particular to a joint implant. Background Art

[0002] The rotator cuff, a muscle group around the shoulder joint, is the backbone of key movements in daily life. It not only assists in completing various movements, but also maintains the stability of the shoulder joint, and is an indispensable part of the movement system. Rotator cuff injury is a very common problem in sports injuries and a common shoulder degenerative disease in middle-aged and elderly people. Its symptoms are usually manifested as chronic pain and limited movement.

[0003] For the various problems caused by rotator cuff injuries, an innovative treatment method - arthroscopic implantation of balloon prostheses (such as rotator cuff balloons) provides a solution for those huge rotator cuff tears that cannot be repaired. Its working principle is to implant a rotator cuff balloon between the acromion and the humeral head to reduce friction, limit the upward movement of the humeral head and assist its sliding, thereby relieving pain and restoring the biomechanical function of the shoulder joint. Balloon prosthesis implantation has multiple advantages such as minimally invasive, high efficiency, rapid recovery and economical affordability.

[0004] However, the key to the success of arthroscopic balloon prosthesis implantation lies in the sealing effect of the balloon prosthesis after it is filled. However, the current balloon sealing technology has some shortcomings. First, during the sealing process, the position of the seal entering the balloon sealing port is not stable enough, resulting in a low sealing success rate. Second, even if the balloon is successfully sealed, the balloon is prone to rupture and cannot provide a long-term and lasting sealing effect. These shortcomings need to be addressed urgently to ensure the durability and reliability of the treatment effect. Summary of the invention

[0005] The purpose of the present invention is to provide a joint implant to solve the problems existing in the above-mentioned prior art, which can realize a self-sealing function after being filled with a medium, thereby ensuring the durability and reliability of the treatment effect.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] The present invention provides a joint implant, comprising an implant body and a liquid inlet body, wherein a main body inner cavity is provided inside the implant body, the liquid inlet body extends into the main body inner cavity from one side, the liquid inlet body is sealedly connected to the implant body, a liquid inlet channel is provided inside the liquid inlet body, one end of the liquid inlet channel is connected to the outside, and the other end is connected to the main body inner cavity through a liquid outlet hole on the liquid inlet body, and when the main body inner cavity is filled with a medium, the liquid inlet channel can be closed under the action of the medium pressure to achieve sealing.

[0008] In one embodiment, the thickness of the liquid inlet body is 0.1-0.5 mm.

[0009] In one embodiment, the implant body is made of absorbable biomaterial.

[0010] In one embodiment, a thickened area is provided at the portion of the implant body that contacts the acromion, and a mesh braid is embedded in the thickened area.

[0011] In one embodiment, one of the liquid outlet holes is disposed on the upper and lower surfaces of the liquid inlet body.

[0012] In one embodiment, the shape of the liquid inlet channel includes an S shape.

[0013] In one embodiment, the liquid inlet body is arranged in the middle position of the inner cavity of the body.

[0014] The present invention also provides a joint implant, comprising an implant body and a liquid inlet body, wherein fixing belts are connected to both sides of the implant body, a main body inner cavity is provided inside the implant body, the liquid inlet body extends into the main body inner cavity from one side, the liquid inlet body is sealed and connected to the implant body, a liquid inlet channel is provided inside the liquid inlet body, one end of the liquid inlet channel is connected to the outside, and the other end is connected to the main body inner cavity through a liquid outlet hole on the liquid inlet body, and when the main body inner cavity is filled with a medium, the liquid inlet channel can be closed under the action of the medium pressure to achieve sealing.

[0015] In one embodiment, the thickness of the liquid inlet body is 0.1-0.5 mm.

[0016] In one embodiment, the fixing belt includes a mesh structure portion and a wrapping portion wrapped around the mesh structure portion, the mesh structure portion is woven from polyethylene, and the wrapping portion is made of TPU material.

[0017] In one embodiment, the implant body is made of TPU material.

[0018] In one embodiment, a thickened area is provided at the portion of the implant body that contacts the acromion, and a mesh braid is embedded in the thickened area.

[0019] In one embodiment, one of the liquid outlet holes is disposed on the upper and lower surfaces of the liquid inlet body.

[0020] In one embodiment, the shape of the liquid inlet channel includes an S shape.

[0021] In one embodiment, the liquid inlet body is arranged in the middle position of the inner cavity of the body.

[0022] Compared with the prior art, the present invention has achieved the following technical effects:

[0023] The joint implant provided by the present invention injects liquid medium into the main body cavity of the implant body through the liquid inlet channel of the liquid inlet body. When the main body cavity is filled with liquid medium and has a certain pressure, the liquid in the main body cavity generates pressure on the liquid inlet body, and the liquid inlet channel is closed due to pressure, completing the sealing, realizing the self-sealing function, and ensuring the durability and reliability of the treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 is a schematic structural diagram of a joint implant in Embodiment 1 of the present invention;

[0026] Figure 2 is a longitudinal cross-sectional view of a joint implant in Embodiment 1 of the present invention;

[0027] Figure 3 is a transverse cross-sectional view of a joint implant in Embodiment 1 of the present invention;

[0028] Figure 4 It is a schematic diagram of the structure of the joint implant in the second embodiment of the present invention.

[0029] In the figure: 1-implant body, 2-liquid inlet body, 3-body inner cavity, 4-liquid inlet channel, 5-liquid outlet hole, 6-thickened area, 7-fixing belt. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] The purpose of the present invention is to provide a joint implant to solve the problems existing in the prior art, which can realize a self-sealing function after being filled with a medium, thereby ensuring the durability and reliability of the treatment effect.

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] Embodiment 1

[0034] like Figure 1-Figure 3 As shown, this embodiment provides a joint implant, including an implant body 1 and a liquid inlet body 2, the implant body 1 is used to be placed in the gap between the acromion and the humerus, a main body inner cavity 3 is provided inside the implant body 1, the liquid inlet body 2 extends into the main body inner cavity 3 from one side, the liquid inlet body 2 is sealed and connected to the implant body 1, a liquid inlet channel 4 is provided in the liquid inlet body 2, one end of the liquid inlet channel 4 is connected to the outside, and the other end is connected to the main body inner cavity 3 through a liquid outlet hole 5 on the liquid inlet body 2, the liquid inlet body 2 itself is in the form of a thin sheet, when the main body inner cavity 3 is filled with the medium, the liquid inlet body 2 is subjected to the pressure of the injected medium, and the liquid inlet channel 4 is closed under the action of the medium pressure to complete the sealing.

[0035] In this embodiment, the thickness of the liquid inlet body 2 is 0.1-0.5 mm, preferably 0.3 mm. In a natural state, the size of the liquid inlet channel 4 in the thickness direction is slightly smaller than the thickness of the liquid inlet body 2, so that the self-sealing effect can be better achieved under pressure. When the main body cavity 3 is filled with the medium, the medium pressure will squeeze the liquid inlet body 2, so that the upper and lower sides of the liquid inlet channel 4 will move closer to the middle and fit together, thereby achieving self-sealing of the liquid inlet channel 4.

[0036] In this embodiment, the implant body 1 is made of absorbable biomaterial with good biocompatibility.

[0037] In this embodiment, the portion where the implant body 1 contacts the acromion is provided with a thickened area 6 to improve the overall strength. A mesh braid is embedded in the thickened area 6 to further improve its strength.

[0038] In this embodiment, a liquid outlet hole 5 is respectively provided on the upper and lower surfaces of the liquid inlet body 2 to increase the liquid filling speed.

[0039] In this embodiment, the shape of the liquid inlet channel 4 includes an S-shape. The shape is not limited to the S-shape, and other shapes such as serpentine and wave shapes are also possible, in order to increase the length of the channel and ensure the sealing effect after being compressed.

[0040] In this embodiment, the liquid inlet body 2 is arranged in the middle position of the main body inner cavity 3.

[0041] During specific use, the joint implant is first placed between the humerus and the acromion. After adjusting the position, the liquid is injected into the liquid inlet channel 4 on the liquid inlet body 2 through a syringe. The liquid enters the main body inner cavity 3 through the liquid inlet channel 4. When the liquid is injected to a certain pressure, the liquid in the main body inner cavity 3 generates pressure on the liquid inlet body 2. At this time, the liquid injection is stopped, and the liquid inlet channel 4 is closed due to pressure to complete the sealing. Since the gap between the acromion and the humerus is completely filled with the joint implant, the implant body 1 is stuck and fixed.

[0042] Embodiment 2

[0043] like Figure 4As shown, this embodiment provides a joint implant, which is different from the first embodiment in that, in this embodiment, both sides of the implant body 1 are connected with fixing belts 7. The implant body 1 is fixed to the humerus by the fixing belts 7 to prevent the joint implant from shifting after being implanted in the body, thereby improving the implant effect and alleviating the patient's pain.

[0044] In this embodiment, the fixing belt 7 includes a mesh structure portion and a wrapping portion wrapped around the mesh structure portion. The mesh structure portion is woven from polyethylene, and the wrapping portion is made of TPU material.

[0045] In this embodiment, the implant body 1 is made of TPU material.

[0046] During specific use, the joint implant is first placed between the humerus and the acromion. After adjusting the position, the liquid inlet channel 4 on the liquid inlet body 2 is injected with liquid through a syringe. The liquid enters the main body inner cavity 3 through the liquid inlet channel 4. When the liquid is injected to a certain pressure, the liquid in the main body inner cavity 3 generates pressure on the liquid inlet body 2. At this time, the liquid injection is stopped, and the liquid inlet channel 4 is closed due to pressure to complete the sealing. After completion, the implant position is finally confirmed, and a bone hole is opened on the humerus. The fixing belt 7 is fixed to the bone hole with an anchor nail to complete the operation.

[0047] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A joint implant, characterized in that: It includes an implant body and a liquid inlet body, wherein a main body inner cavity is provided inside the implant body, the liquid inlet body extends into the main body inner cavity from one side, the liquid inlet body is sealed and connected to the implant body, a liquid inlet channel is provided inside the liquid inlet body, one end of the liquid inlet channel is connected to the outside, and the other end is connected to the main body inner cavity through a liquid outlet hole on the liquid inlet body, and when the main body inner cavity is filled with a medium, the liquid inlet channel can be closed under the action of the medium pressure to achieve sealing.

2. The joint implant according to claim 1, characterized in that: The implant body is made of absorbable biomaterial.

3. A joint implant, characterized in that: It includes an implant body and a liquid inlet body, wherein fixing belts are connected to both sides of the implant body, a main body inner cavity is arranged inside the implant body, the liquid inlet body extends into the main body inner cavity from one side, the liquid inlet body is sealedly connected to the implant body, a liquid inlet channel is arranged inside the liquid inlet body, one end of the liquid inlet channel is connected to the outside, and the other end is connected to the main body inner cavity through the liquid outlet hole on the liquid inlet body, and when the main body inner cavity is filled with medium, the liquid inlet channel can be closed under the action of medium pressure to achieve sealing.

4. The joint implant according to claim 1 or 3, characterized in that: The thickness of the liquid inlet body is 0.1-0.5 mm.

5. The joint implant according to claim 3, characterized in that: The fixing belt comprises a mesh structure portion and a wrapping portion wrapped around the mesh structure portion, the mesh structure portion is woven from polyethylene, and the wrapping portion is made of TPU material.

6. The joint implant according to claim 3, characterized in that: The implant body is made of TPU material.

7. The joint implant according to claim 1 or 3, characterized in that: A thickened area is provided at the part where the implant body contacts the acromion, and a mesh braid is embedded in the thickened area.

8. The joint implant according to claim 1 or 3, characterized in that: The upper and lower surfaces of the liquid inlet body are each provided with a liquid outlet hole.

9. The joint implant according to claim 1 or 3, characterized in that: The shape of the liquid inlet channel includes an S shape.

10. The joint implant according to claim 1 or 3, characterized in that: The liquid inlet body is arranged at the middle position of the inner cavity of the body.

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