Universal artificial limb cavity

Abstract

The utility model relates to the technical field of prostheses, in particular to a universal prosthetic cavity which comprises a hollow receiving cavity shell, a main body of the receiving cavity shell is conical, one end of the receiving cavity shell is provided with a turning part used for being matched with a bent part of a stump joint, the turning part is provided with a connector used for being in butt joint with the stump, and the connector is connected with the receiving cavity shell. And the main body, the turning part and the interface of the receiving cavity shell are of a bilaterally symmetrical structure. By designing the receiving cavity shell, the turning part and the interface into a bilaterally symmetrical structure, the manufactured artificial limb cavity can be universally used by the left hand and the right hand, in addition, due to the fact that residual limb data conforms to normal distribution regulations, universal artificial limb cavities of different sizes and models are correspondingly produced according to discrete data of residual limbs, the selection and replacement requirements of patients can be fully met, and the use cost is reduced. The universality of the artificial limb cavity is further improved, the cost of using the artificial limb cavity by a patient is greatly reduced, and the artificial limb cavity has a wide market prospect.

Description

Technical Field

[0001] The utility model relates to the technical field of prosthetics, and particularly relates to a universal prosthetic socket. Background Art

[0002] A prosthetic socket, also known as a prosthetic receiving socket, is a component that can comfortably accommodate the residual limb and effectively transmit relevant forces to the distal part of the prosthesis. Prosthetic receiving sockets need to be adapted to the shape of the residual limb to ensure comfortable wearing for amputees and to integrate the prosthesis and the residual limb.

[0003] To meet the adaptability requirements of prosthetics, a prosthetist with professional skills is usually required to take a mold of the residual limb, then trim the mold, make it with resin or sheet material, and use professional machines such as a professional grinding machine, a vacuum pump, and a drill press to complete each manufacturing process to complete a specially customized receiving socket. The prosthetic receiving socket provided to patients in this customized manner has a high cost and price. Moreover, after a period of time, the residual limb will atrophy, and a new receiving socket needs to be remade. Therefore, multiple prosthetic receiving sockets of different sizes are required during the rehabilitation process. If each prosthetic receiving socket needs to be customized, it will inevitably cause high costs for patients.

[0004] To solve the above problems, some designs of universal receiving sockets have been proposed by those skilled in the art.

[0005] For example, Chinese Patent Publication No. CN109998743A discloses a universal receiving socket for a forearm prosthesis. A soft pad is placed inside the socket. The length of the universal receiving socket for the forearm prosthesis is adjusted by a telescopic bracket. One end of the telescopic bracket has a prosthetic hand connecting plate that can be connected to the prosthetic hand. An outer cavity plate is installed on the outer tube of the telescopic bracket. The inner cavity only exists near the elbow joint and is an open U-shaped structure made of a soft material. The inner bottom of the outer cavity and the outer bottom of the U-shaped inner cavity are connected by a nylon fastener, and the connection position can be selected forward and backward. Multiple nylon fastener straps are installed on the inner side surface of the outer cavity plate. The upper nylon fastener strap makes the U-shaped inner cavity closely fit and enclose the elbow of the forearm residual limb, and the middle and front nylon fastener straps fix the middle and front parts of the residual limb. Although such a structure is beneficial for various different forearm residual limbs to use this receiving socket, due to its connection method of combining an open U-shaped structure with a nylon fastener for the connection between the residual limb and the prosthesis, the connection stability and reliability are significantly weakened, and it is easy to give a sense of uneasiness.

[0006] For another example, Chinese Utility Model Patent Publication No. CN220632296U discloses a universal socket for a forearm prosthesis, which includes a sleeve body. A bundling device is slidably connected to the upper end of the sleeve body for bundling the forearm to fix the forearm to the sleeve body. A limiting component for restricting the movement of the bundling device is provided on the sleeve body. A bottom sleeve with an adjustable depth position is provided at the lower end of the sleeve body, which abuts against the end of the forearm and is used to connect the prosthesis. The user sleeved the sleeve body on the stump. One end of the stump abuts against the bottom sleeve. At this time, the user judges the comfort according to his own feelings and adjusts the vertical position of the bottom sleeve according to his own senses. After the bottom sleeve is adapted to his own stump, drag the traction rope to drive the arc-shaped support plate to move. After the arc-shaped support plate abuts against the side wall of the user's stump, tie the user's stump and the arc-shaped support plate tightly with a strap, and then snap the clamping block into the clamping groove of the connecting sleeve to complete the installation. Similarly, this universal socket for a forearm prosthesis connects the residual limb and the prosthesis by setting a bundling device at the opening of the socket, and the stability and reliability of the connection are significantly weakened, which is likely to give people a sense of uneasiness.

[0007] In order to further solve the problem of the relatively high cost of using a prosthesis socket for patients, it is necessary to design a prosthesis cavity structure with higher versatility. Utility Model Content

[0008] The purpose of the present utility model is to provide a universal prosthesis cavity. The prosthesis cavity of the present utility model not only has higher versatility compared with the existing universal sockets for prostheses connected by Velcro or bundling devices, but also is conducive to fundamentally solving the problem of the relatively high cost of using a prosthesis cavity for patients.

[0009] To achieve the above object, the technical solution of the present utility model is as follows: A universal prosthesis cavity includes a hollow socket housing. The main body shape of the socket housing is conical. One end of the socket housing is provided with a turning portion for cooperating with the bent portion of the residual limb joint. The turning portion is provided with an interface for docking with the residual limb. The main body, the turning portion and its interface of the socket housing are left-right symmetrical structures.

[0010] Preferably, an installation hole is provided at the other end of the socket housing for installing a connecting piece.

[0011] Preferably, ventilation and sweat drainage holes are provided on the socket housing. The ventilation and sweat drainage holes penetrate through the side wall of the socket housing to communicate the inner cavity of the socket housing with the outside.

[0012] Preferably, there are multiple ventilation and sweat drainage holes, and the multiple ventilation and sweat drainage holes are evenly distributed.

[0013] Preferably, a plurality of breathable sweat pores are arranged in an 8-shaped pattern. The plurality of breathable sweat pores are provided on the side wall of the socket housing main body near the turning part. The outer surface of the socket housing is also provided with anti-slip textures to solve the problems such as easy slippage and detachment of decorative sleeves when they are sleeved on the outer surface, and improve the decorativeness.

[0014] Preferably, the anti-slip textures are provided on the outer surface of the socket housing main body near the turning part of the socket housing.

[0015] The beneficial effects of the present utility model: By designing the socket housing, the turning part and the interface into a left-right symmetrical structure, the manufactured prosthetic cavity can be used interchangeably for both left and right hands. Compared with the existing prosthetic universal socket with nylon fastener connection or bundling device, it not only has higher universality, but also has better connection stability and reliability, as well as a sense of security and reality. On this basis, more importantly, since the stump data conforms to the normal distribution regulation, universal prosthetic cavities of different sizes and models are produced according to the discrete data of the stump, which can fully meet the needs of patients for selection and replacement, further improving the universality of the prosthetic cavity of the present utility model, greatly reducing the cost of patients using the prosthetic cavity, and being conducive to fundamentally solving the problem of the relatively high cost of patients using the prosthetic cavity, and having a broad market prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view structural schematic diagram of a forearm universal prosthetic cavity.

[0017] Figure 2 It is a rear view structural schematic diagram of a forearm universal prosthetic cavity.

[0018] Figure 3 It is a left view structural schematic diagram of a forearm universal prosthetic cavity.

[0019] Figure 4 It is a top view structural schematic diagram of a forearm universal prosthetic cavity.

[0020] Figure 5 It is a bottom view structural schematic diagram of a forearm universal prosthetic cavity.

[0021] Figure 6 It is a three-dimensional structural schematic diagram of a forearm universal prosthetic cavity.

[0022] Label description: 1 - Socket housing, 1.1 - Main body, 1.2 - Turning part, 1.3 - Interface, 1.4 - Mounting hole, 1.5 - Breathable sweat pore, 1.6 - Anti-slip texture. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] In order to enable those of ordinary skill in the art to understand the technical content of the present utility model, the present utility model will be described in detail below with reference to the accompanying drawings.

[0024] In this embodiment, the general prosthetic socket of the present utility model is used for the forearm as an example for illustration. It should be understood that the technical solution claimed by the present utility model is not limited to being applied to the forearm.

[0025] As Figures 1 to 6 shown, a general prosthetic socket for the forearm includes a hollow receiving cavity housing 1. The main body 1.1 of the receiving cavity housing 1 has a conical shape. A turning portion 1.2 for cooperating with the bent portion of the residual limb joint is provided at the lower part of the receiving cavity housing 1, and an interface 1.3 for docking with the residual limb is provided on the turning portion 1.2.

[0026] Please refer to Figure 1 and Figure 2 , the main body 1.1, the turning portion 1.2 and its interface 1.3 of the receiving cavity housing are of a left-right symmetric structure, so that this general prosthetic socket for the forearm can be used not only on the left forearm but also on the right forearm, that is, it is universal for patients with left or right residual limbs. On this basis, more importantly, since the forearm residual limb data conforms to the normal distribution regulation, different sizes and models of general prosthetic sockets for the forearm are produced according to the discrete data of the residual limb, which can fully meet the selection and replacement needs of patients, further improve the universality of the forearm prosthetic socket, greatly reduce the cost of patients using the forearm prosthetic socket, and is conducive to fundamentally solving the problem of the relatively high cost of patients using the forearm prosthetic socket, having a broad market prospect. It has higher universality, better connection stability and reliability, as well as a sense of security and realism for the existing prosthetic universal receiving cavity with a nylon fastener connection or bundling device.

[0027] As Figures 1 to 6 shown, an installation hole 1.4 is provided at the sealed upper end of the receiving cavity housing 1, which can be used to install a connecting member.

[0028] As Figures 1 to 6 shown, ventilation and sweat drainage holes 1.5 are provided on the receiving cavity housing 1. The ventilation and sweat drainage holes 1.5 penetrate the side wall of the receiving cavity housing 1, so that the inner cavity of the receiving cavity housing 1 communicates with the outside.

[0029] As Figures 1 to 6 shown, there are multiple ventilation and sweat drainage holes 1.5, and the multiple ventilation and sweat drainage holes 1.5 are evenly distributed.

[0030] As Figures 1 to 6As shown, multiple breathable and sweat-venting holes 1.5 are arranged in an 8-shaped pattern. The multiple breathable and sweat-venting holes 1.5 are provided on the side wall of the socket housing main body 1.1 near the turning portion 1.2. The outer surface of the socket housing 1 is also provided with anti-slip textures 1.6 to solve the problems such as easy slippage and detachment of decorative sleeves when they are sleeved on the outer surface, and improve the decorativeness.

[0031] As Figures 1 to 6 shown, the anti-slip textures 1.6 are provided on the outer surface of the socket housing main body 1.1 near the turning portion 1.2 of the socket housing. Please refer to Figure 3 , and one anti-slip texture 1.6 is provided on each side of the turning portion 1.2 of the socket housing 1.

[0032] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied to other related technical fields, are all included in the patent protection scope of the present invention.

Claims

1. A general-purpose prosthetic socket, comprising a hollow receiving cavity housing, characterized in that: The main body of the socket housing is conical in shape. One end of the socket housing is provided with a turning portion for cooperating with the bent part of the residual limb joint. The turning portion is provided with an interface for docking with the residual limb. The main body, the turning portion and the interface of the socket housing are left-right symmetric structures.

2. The general prosthetic socket according to claim 1, wherein: The other end of the socket housing is provided with a mounting hole for mounting a connecting member.

3. The general prosthetic socket according to claim 1, characterized in that: The socket housing is provided with air-permeable and sweat-draining holes. The air-permeable and sweat-draining holes penetrate through the side wall of the socket housing, so that the inner cavity of the socket housing communicates with the outside.

4. The general prosthetic socket according to claim 3, wherein: There are multiple air-permeable and sweat-draining holes, and the multiple air-permeable and sweat-draining holes are evenly distributed.

5. The general prosthetic socket according to claim 3 or 4, characterized in that: The multiple air-permeable and sweat-draining holes are arranged in an 8-shaped pattern.

6. The general prosthetic socket according to claim 3 or 4, characterized in that: The multiple air-permeable and sweat-draining holes are provided on the side wall of the main body of the socket housing near the turning portion.

7. The general prosthetic socket according to claim 1, 2, 3 or 4, characterized in that: The outer surface of the socket housing is also provided with anti-slip textures.

8. The general prosthetic socket according to claim 7, characterized in that: The anti-slip textures are provided on the outer surface of the main body of the socket housing near the turning portion of the socket housing.

Images