A one-way valve device for a prosthetic pneumatic joint

Abstract

This invention relates to the field of rehabilitation aids technology and proposes a one-way valve device for a pneumatic joint of a prosthesis. The device includes an airway (1), a one-way valve outer ring (2), a one-way valve inner ring (3), a one-way valve end face (4), and a shoulder-raising shaft (5). The one-way valve inner ring (3) is fixedly disposed between two shoulder-raising shafts (5). The shoulder-raising shaft (5) is detachably connected to the one-way valve end face (4). The bottom side of the one-way valve outer ring (2) is integrally formed with the one-way valve inner ring (3) through the one-way valve end face (4), and an opening is formed on the outer edge side, which abuts against the inner wall of the airway (1). When gas enters the airway from the opening side of the outer ring, the outer edge side of the outer ring abuts against the inner wall of the airway, forming an obstruction, and the gas cannot flow. When gas enters the airway from the bottom side of the outer ring, the outer edge side of the one-way valve outer ring is forced to separate from the inner wall of the airway due to the pressure of the gas, so that the gas can pass through the one-way valve device, thereby realizing a one-way channel.

Description

Technical Field

[0001] This invention relates to the field of rehabilitation aids technology, and in particular to a one-way valve device for a pneumatic joint of a prosthesis. Background Technology

[0002] With the increasing occurrence of natural disasters, traffic accidents, and other unavoidable calamities, the number of people suffering amputations due to severe injuries is gradually increasing. In recent years, with technological advancements and improvements in people's living standards, some disabled individuals are eager to change their circumstances. To help these individuals regain their mobility, reintegrate into society, and improve their self-confidence and quality of life, pneumatic joint prostheses have been incorporated into the design of assistive devices to help them restore their motor functions.

[0003] In existing pneumatic joint designs for prostheses, the one-way valve affects the direction of gas flow in the joint. Current one-way valves use a sealed design with a center shaft to achieve unidirectional flow, but this method is complex and inconvenient for disassembly and installation. Summary of the Invention

[0004] Therefore, the purpose of this invention is to provide a one-way valve with a simpler structure that is easy to disassemble and install, which is mainly used for one-way gas flow in pneumatic joints of prostheses.

[0005] Specifically, this is mainly achieved through the following technical solutions:

[0006] A one-way valve device for a pneumatic joint in a prosthesis, comprising:

[0007] Airway, one-way valve outer ring, one-way valve inner ring, one-way valve end face, and shoulder lifting shaft;

[0008] The inner ring of the one-way valve is fixedly disposed between the two shoulder-lifting shafts;

[0009] The shoulder-lifting shaft and the one-way valve end face are detachably connected;

[0010] The bottom side of the outer ring of the one-way valve is integrally formed with the inner ring of the one-way valve via the one-way valve end face, and an opening is formed on one side of the outer edge, which abuts against the inner wall of the air passage. When gas enters the air passage from the opening side of the outer ring, the outer edge of the outer ring abuts against the inner wall of the air passage, creating an obstruction and preventing gas flow. When gas enters the air passage from the bottom side of the outer ring, the outer edge of the one-way valve is forced to separate from the inner wall of the air passage by the gas pressure, allowing gas to pass through the one-way valve device, thus achieving a one-way passage. This one-way valve device has the advantages of simple structure, low manufacturing cost, and convenient installation and disassembly.

[0011] Preferably, the radial cross-section of the outer ring of the one-way valve is conical, and the radial cross-section of the inner ring of the one-way valve is circular.

[0012] Preferably, the thickness of the one-way valve end face is 1-2 mm.

[0013] Preferably, the radial cross-section of the one-way valve end face is circular.

[0014] Preferably, the outer ring of the one-way valve is made of nitrile rubber. Attached Figure Description

[0015] 1. Figure 1 This is a plan view of a one-way valve device for a pneumatic joint of a prosthesis according to an embodiment of the present invention;

[0016] 2. Figure 2 This is a front view of the structure of the outer ring and inner ring of the one-way valve in an embodiment of the present invention;

[0017] 3. Figure 3 This is a cross-sectional view of a one-way valve device for a prosthetic pneumatic joint according to an embodiment of the present invention. Detailed Implementation

[0018] To enable those skilled in the art to better understand the core ideas of this invention, a detailed description will be provided below in conjunction with the accompanying drawings.

[0019] like Figure 1 As shown, this invention discloses a one-way valve device for a pneumatic joint of a prosthesis. The device includes: an airway 1 with an air inlet and an air outlet, a one-way valve outer ring 2, a one-way valve inner ring 3, a one-way valve end face 4, and a shoulder-raising shaft 5. The one-way valve inner ring 3 is fixedly disposed between two shoulder-raising shafts 5, and is axially fixed to the shoulder-raising shafts (5) through the shoulder raising at both ends of the shoulder-raising shafts (5). The shoulder-raising shafts 5 are detachably connected to the one-way valve end face 4. The bottom side of the one-way valve outer ring 2 is fixed to the one-way valve inner ring 3 through the one-way valve end face 4. An opening is formed on one side of the outer edge of the one-way valve outer ring 2 and rests against the inner wall of the airway 1.

[0020] like Figure 2 and Figure 3 As shown, the radial cross-section of the inner ring 3 of the one-way valve is circular, and the radial cross-section of the outer ring 2 of the one-way valve is conical. The bottom side of the outer ring of the one-way valve (i.e.,...) Figure 1 The left side of the figure is a one-way valve end face 4 with a certain thickness (1-2 mm in this embodiment of the invention). The radial cross-section of the one-way valve end face 4 is circular. The outer edge of the one-way valve outer ring (i.e., Figure 1 An opening is formed on the right side of the middle.

[0021] The specific working principle of a one-way valve device for a prosthetic pneumatic joint disclosed in this invention is as follows: when gas flows from the outer edge opening of the outer ring 2 of the one-way valve (i.e., Figure 1When gas enters airway 1 from the right side of the one-way valve outer ring 2, the outer edge of the opening side presses against the inner wall of airway 1, creating an obstruction and preventing gas flow; when gas enters from the bottom side of the one-way valve outer ring 2 (i.e., the right side of the opening), the gas flows through the airway 1. Figure 1 When the gas enters the airway 1 from the left side, since the outer ring 2 of the one-way valve is made of nitrile rubber, the outer edge of the outer ring 2 is forced to separate from the inner wall of the airway 1 by the pressure of the gas. That is, at this time, the outer edge of the outer ring 2 of the one-way valve is no longer pressed against the inner wall of the airway 1, so that the gas can pass through the one-way valve device, thereby realizing a one-way passage.

[0022] As can be seen from the above, the one-way valve device for a pneumatic joint of a prosthesis disclosed in this invention uses a conical nitrile rubber structure to cooperate with the inner wall of the airway and the shoulder lifting shaft to form a one-way channel. This one-way valve device has a simple structure, is easy to install, and has low manufacturing cost, and can be widely used in one-way, low-pressure airways. It solves the technical problems of high manufacturing cost and complex structure caused by the common use of spring and center shaft structures in the one-way valves for pneumatic joints of prostheses in the prior art.

[0023] The embodiments of the present invention have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A one-way valve device for a pneumatic joint in a prosthesis, characterized in that, include: Airway (1), one-way valve outer ring (2), one-way valve inner ring (3), one-way valve end face (4), and shoulder lifting shaft (5); the one-way valve inner ring (3) is fixedly set between two shoulder lifting shafts (5), and the two shoulder lifting shafts have the same structure; the shoulder lifting shaft (5) and the one-way valve end face (4) are detachably connected; The bottom side of the one-way valve outer ring (2) is fixed to the one-way valve inner ring (3) through the one-way valve end face (4), and an opening is formed on the outer edge side, which is pressed against the inner wall of the air passage (1). The one-way valve outer ring (2) is made of nitrile rubber material. The radial cross section of the one-way valve outer ring (2) is conical, and the radial cross section of the one-way valve inner ring (3) is circular. The thickness of the one-way valve end face (4) is 1-2 mm. When gas enters the air passage from the opening side of the outer ring, the outer edge side of the outer ring presses against the inner wall of the air passage, forming an obstruction, and the gas cannot flow. When gas enters the air passage from the bottom side of the outer ring, the outer edge side of the one-way valve outer ring is forced to separate from the inner wall of the air passage due to the pressure of the gas, thereby realizing a one-way gas passage.

2. A one-way valve device for a pneumatic joint of a prosthesis as described in claim 1, characterized in that, The radial cross-section of the one-way valve end face (4) is circular.

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