Prosthetic socket with neck bush

Abstract

The utility model discloses an artificial limb socket with a neck bush, and relates to the technical field of artificial limb sockets. Comprising an artificial limb receiving cavity, and a threaded hole is formed in the bottom of the artificial limb receiving cavity; the neck bush is used for being arranged on the stump in a sleeving mode, a metal support is arranged at the bottom of the outer side of the neck bush, and a lock pin is detachably connected to the center of the bottom of the metal support; the anti-damage bottom support structure is arranged at the lower end part of the neck bush and is connected with the metal support; and the outer side of one end of the special-shaped lock, which is provided with a lock hole for inserting the lock pin, is provided with an external thread and extends into the threaded hole to be connected with the artificial limb receiving cavity through threaded connection. The neck bush is detachably connected into an artificial limb receiving cavity through the special-shaped lock, wearing of an artificial limb is facilitated, meanwhile, the stump is better supported through the anti-damage bottom support structure at the rigid connecting position of the bottom of the neck bush, the stump is prevented from being hurt due to the fact that reverse acting force is generated on the stump, and the leg is prevented from being hurt.

Description

Technical Field

[0001] This utility model relates to the field of prosthetic socket technology, and in particular to a prosthetic socket with an inner liner. Background Technology

[0002] A prosthesis socket is a cavity-like component that houses the residual limb of an amputee. It serves as the connection between the residual limb and the prosthesis, bearing the weight of the limb and suspending the prosthesis. The socket consists of an outer rigid shell and an inner liner with a certain degree of flexibility. The inner liner plays a crucial role, directly contacting the residual limb and, together with the outer rigid shell, supporting the body's weight and effectively transmitting relevant forces to the distal end of the prosthesis.

[0003] To fully accommodate the dynamic tissue and regional loads occurring within the prosthesis socket, the prosthesis must consider the reverse force exerted on the residual limb within the socket to prevent injury. In existing technologies, the connection between the inner sleeve and the socket is achieved through a shaped lock, with the connection point being a rigid connector, typically located at the bottom of the inner sleeve. To ensure better support for the leg and prevent injury while facilitating the connection between the inner sleeve and the socket, there is an urgent need to design a prosthesis socket with an inner sleeve. Utility Model Content

[0004] The purpose of this invention is to provide a prosthesis receiving cavity with an inner liner in order to solve the above-mentioned problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] This utility model discloses a prosthetic receiving cavity with an inner liner, comprising:

[0007] A prosthesis receiving cavity, wherein the bottom of the prosthesis receiving cavity has a threaded hole;

[0008] An inner liner is used to cover the stump. A metal support is provided at the bottom of the outer side of the inner liner, and a locking pin is detachably connected to the center of the bottom of the metal support.

[0009] A damage-resistant base structure, which is disposed at the lower end of the inner liner and connected to the metal support; and

[0010] A special type of lock, having an external thread on the outer side of a lock hole into which the lock pin is inserted, and extending into the threaded hole to connect to the prosthesis receiving cavity via a threaded connection.

[0011] Furthermore, the mouth shape of the prosthesis receiving cavity is an ischial-enclosed mouth shape.

[0012] Furthermore, the locking pin is connected by inserting into the shaped lock to secure the inner liner within the prosthesis receiving cavity.

[0013] Furthermore, the metal support and the locking pin are connected by a thread.

[0014] Furthermore, the anti-damage base structure includes a connecting post located at the center of the top of the metal support, the connecting post extending into the interior of the center of the bottom of the inner liner, an arc-shaped hard pad located inside the center of the bottom of the inner liner, and an elastic outer edge pad extending outward from the outer edge of the arc-shaped hard pad.

[0015] Furthermore, the thickness of the bushing at the bottom of the inner bushing is greater than the thickness of other parts.

[0016] Furthermore, the inner liner is a silicone sleeve or a gel sleeve.

[0017] In the above technical solution, the prosthetic receiving cavity with an inner liner provided by this utility model has the following beneficial effects:

[0018] The inner liner is detachably connected to the prosthesis socket by a special-shaped locking device, which facilitates the wearing of the prosthesis. At the same time, the rigid connection at the bottom of the inner liner is supported by a damage-proof support structure to better support the residual limb, avoid generating a reverse force on the residual limb and injuring it, and protect the leg from injury. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0020] Figure 1 A schematic diagram of the structure of a prosthesis receiving cavity with an inner liner provided for an embodiment of this utility model;

[0021] Figure 2 A schematic diagram of the bottom structure of the inner liner of a prosthesis receiving cavity with an inner liner provided for an embodiment of this utility model;

[0022] Figure 3 A front view of the inner liner of a prosthesis receiving cavity with an inner liner provided for an embodiment of this utility model;

[0023] Figure 4 A cross-sectional view of a prosthesis receiving cavity with an inner liner provided for an embodiment of this utility model;

[0024] Figure 5 This is a schematic diagram of a damage-prevention base structure for a prosthesis receiving cavity with an inner liner, provided for an embodiment of this utility model.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Prosthetic socket; 2. Threaded hole; 3. Inner liner; 4. Metal support; 5. Locking pin; 6. Irregular lock; 7. Connecting post; 8. Curved hard pad; 9. Elastic outer edge pad. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0028] Please see Figure 1-5 A prosthetic socket with an inner liner, comprising:

[0029] The prosthesis receiving cavity 1 has an upper end for inserting and fixing the residual limb, and a lower end for connecting the prosthesis. The bottom of the prosthesis receiving cavity 1 has a threaded hole 2.

[0030] The inner liner 3 is used to cover the residual limb and then insert into the prosthesis receiving cavity 1 for fixation to protect the residual limb. A metal support 4 is provided at the bottom of the outer side of the inner liner 3, and a locking pin 5 is detachably connected to the center of the bottom of the metal support 4.

[0031] An anti-damage support structure is located at the lower end of the inner sleeve 3 and connects to the metal support 4. Because the inner sleeve 3 is flexible and primarily serves to protect the residual limb, its lower end also needs to be rigidly connected to the prosthesis receiving cavity 1 for fixation. To isolate this rigid connection structure and prevent it from directly contacting the residual limb, or to prevent damage to the contact area of ​​the residual limb caused by the reaction force of the rigid connection structure at the bottom of the inner sleeve 3 when it bears the user's weight, an anti-damage support structure is provided at this location to protect the residual limb.

[0032] The irregular-shaped lock 6 has an external thread on the outer side of a lock hole into which a locking pin 5 is inserted, extending into a threaded hole 2 for connection to the prosthesis receiving cavity 1 via a threaded connection. Specifically, the irregular-shaped lock 6 is detachably connected to the bottom of the prosthesis receiving cavity 1 via a threaded connection and extends into the prosthesis receiving cavity 1 through the threaded hole 2, so that the lock hole position of the irregular-shaped lock 6 allows the locking pin 5 to be inserted for locking. After the inner sleeve 3 extends into the prosthesis receiving cavity 1 from above, it is fixed by the detachable connection between the locking pin 5 and the irregular-shaped lock 6. In the prior art, the irregular-shaped lock 6 also has a structure for mounting the prosthesis at its bottom, which will not be described in detail here. The irregular-shaped lock 6 can be referenced in patent application number CN201620079739.0, entitled "A Prosthesis Support Lock".

[0033] Furthermore, the mouth shape of the prosthesis socket 1 is an ischial-enclosed mouth shape. In this embodiment, the MAS socket, also known domestically as the ischial branch-enclosed receiver, is taken as an example.

[0034] Furthermore, the locking pin 5 is connected by inserting a non-standard locking device 6 to fix the inner sleeve 3 inside the prosthesis receiving cavity 1. The locking pin 5 is a rod-shaped structure with continuous annular protrusions and can be used with the non-standard locking device 6.

[0035] Furthermore, the metal support 4 and the locking pin 5 are connected by threads, so that the locking pin 5 can also be removed from the metal support 4 for cleaning, replacement, and storage.

[0036] Furthermore, the anti-damage base structure includes a connecting post 7 located at the center of the top of the metal support 4. The connecting post 7 extends into the interior of the center of the bottom of the inner liner 3. An arc-shaped hard pad 8 is provided inside the center of the bottom of the inner liner 3. An elastic outer edge pad 9 extends outward from the outer edge of the arc-shaped hard pad 8.

[0037] Furthermore, the thickness of the bushing at the bottom of the inner bushing 3 is greater than the thickness of other parts.

[0038] Specifically, the connecting post 7, the curved hard pad 8, and the elastic outer edge pad 9 are essentially pre-embedded inside the inner liner 3 during the manufacturing process of the inner liner 3. Therefore, the upper and lower parts of the curved hard pad 8 and the elastic outer edge pad 9 are made of the inner liner 3 material, so that the inner liner 3 can better protect the limb. Therefore, both the connecting column 7 and the curved hard pad 8 are rigid structures to stably connect with the metal support 4 and provide more stable force. At the same time, in order to better match the softness of the inner liner 3 and better fit the residual limb, the area of ​​the curved hard pad 8 should not be too large. Its outer perimeter is transitioned by setting an elastic outer edge pad 9. The elastic outer edge pad 9 is an elastic annular plate structure that elastically deforms under force to match the force. In order to better transition to the inner liner 3, the thickness of the elastic outer edge pad 9 gradually decreases from the position of the curved hard pad 8 outwards. This allows it to better match the force deformation of the inner liner 3 while providing elastic support, so as to minimize damage to the contact area of ​​the residual limb.

[0039] Furthermore, the inner liner 3 is a silicone or gel sleeve, which is a commonly used material for inner liner 3 in the market, in order to achieve better skin-friendliness and protection of the residual limb.

[0040] In summary, the detachable connection of the inner liner to the prosthesis socket via the shaped lock facilitates the wearing of the prosthesis. At the same time, the damage-resistant support structure at the rigid connection at the bottom of the inner liner better supports the residual limb, avoiding adverse forces on the residual limb and preventing injury to the leg.

[0041] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A prosthetic socket having an inner liner, characterized in that, It comprises: a prosthetic socket (1) having a threaded hole (2) at its bottom; an inner sleeve (3) to be sleeved on a residual limb, a metal bracket (4) being arranged at the bottom of the outer side of the inner sleeve (3), and a locking pin (5) being detachably connected to the center position of the bottom of the metal bracket (4); a damage-preventing bottom bracket structure arranged between the lower end of the inner sleeve (3) and the metal bracket (4); and a special-shaped lock (6) having an outer thread at one end of the lock hole into which the locking pin (5) is inserted, and extending into the threaded hole (2) to be connected with the prosthetic socket (1) by thread connection.

2. A prosthetic socket with an inner liner according to claim 1, characterized in that The mouth shape of the prosthetic socket (1) is an ischium-containing mouth shape.

3. A prosthetic socket with an inner liner according to claim 1, characterized in that The locking pin (5) is connected by being inserted into the special-shaped lock (6) to fix the inner sleeve (3) in the prosthetic socket (1).

4. A prosthetic socket with an inner liner according to claim 1, characterized in that The metal bracket (4) and the locking pin (5) are connected by thread connection.

5. A prosthetic socket with a liner according to claim 1, wherein, The damage-preventing bottom bracket structure comprises a connecting column (7) arranged at the center position of the top of the metal bracket (4), the connecting column (7) extending into the inner position of the center position of the bottom of the inner sleeve (3), an arc hard pad (8) being arranged at the inner position of the center position of the bottom of the inner sleeve (3), and an elastic outer edge pad (9) being arranged at the outer edge of the arc hard pad (8) extending outward.

6. A prosthetic socket with an inner liner according to claim 5, characterized in that The thickness of the inner sleeve (3) at the bottom is greater than that at other positions.

7. A prosthetic socket with an inner liner according to claim 1, characterized in that The inner sleeve (3) is a silica gel sleeve or a gel sleeve.

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