Artificial limb elbow arm connection integral structure

Abstract

Hinge cavities are formed in the two sides of a front arm cylinder, the outer wall of the front arm cylinder is not riveted with hinges, after the hinges are installed at the two ends of an elbow joint shaft, the hinges are inserted into the hinge cavities, and the inner walls of the hinge cavities and the hinges are fixed through screws in the front arm cylinder, so that mounting and dismounting are convenient; all the structures are arranged in the forearm cylinder and the cover plate, a round ear cover is further arranged on the hinge root portion at the joint of the hinge and the elbow joint shaft in a buckled mode, and the elbow joint, the ear cover, the forearm cylinder and the cover plate form a smooth streamline-shaped bionic elbow arm structure together.

Description

Technical Field

[0001] The invention relates to the technical field of prostheses, and in particular to an overall prosthesis elbow-arm connection structure. Background Art

[0002] The existing method of connecting the prosthetic elbow joint and the forearm is: first rivet a pair of hinges on the forearm tube, and then install the hinges on both sides of the elbow joint axis. Installation, disassembly and maintenance are very inconvenient, and the hinges and rivets are raised, which affects the appearance. In addition, the cable from the elbow joint to the forearm of the electric elbow joint is exposed at the bend of the elbow joint, which also greatly affects the appearance. The forearm tube forms sharp angles on both sides at the elbow joint, which has obvious defects and poor appearance. Some products have a protruding edge seal to cover the edge of the forearm tube, but the protruding edge seal also affects the appearance. Therefore, it is necessary to invent an innovative overall structure of the prosthetic elbow arm connection, which should be reliable in connection, easy to disassemble, and have a simulated and beautiful appearance to solve the problems existing in the above-mentioned prior art. Summary of the invention

[0003] The present invention discloses an overall structure of a prosthetic elbow-arm connection. After the elbow joint and the hinge are assembled as one, the overall structure is connected to the forearm tube. There are hinge cavities on both sides of the forearm tube for inserting the hinge. The outer wall of the hinge cavity is the outer wall of the forearm tube. The outer wall is not riveted to the hinge, so the appearance is not affected. After the hinge is inserted into the hinge cavity, the cavity bears the main load moment, which increases the reliability. The inner wall of the hinge cavity is fixed to the hinge by screws inside the forearm tube, which is convenient for installation, disassembly and maintenance. These structures are all inside the forearm tube and the cover plate. The cables directly enter the closed forearm tube from both sides of the elbow joint. There is also a circular ear cover, which is buckled on the hinge root at the connection between the elbow joint axis and the hinge. The elbow joint, the ear cover, the forearm tube and the cover plate together form a smooth streamlined bionic elbow-arm structure.

[0004] Benefits of the Invention

[0005] An innovative prosthetic elbow-arm structure has been invented, which has reliable connection, is easy to assemble, disassemble and maintain, has a simulated and beautiful appearance, and solves the problems existing in the above-mentioned prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 This is the schematic diagram of the cross-section of the elbow connected to the forearm. Figure 2 It is an overall external side view.

[0007] The numbers in the figure are explained as follows:

[0008] 1 Forearm tube

[0009] 2 Hinge cavity

[0010] 3 Hinges

[0011] 4 Hinge screws

[0012] 5 Cover

[0013] 6 Cables

[0014] 7 Elbow

[0015] 8 Ear covers DETAILED DESCRIPTION

[0016] See Figure 1 and Figure 2 There are hinge cavities 2 on both sides of the forearm tube 1, into which hinges 3 can be inserted. The elbow joint 7 is integrated with the hinge 3 and then connected to the forearm tube 1 as a whole. The outer wall of the hinge cavity 2 is the outer wall of the forearm tube. This outer wall is not riveted with the hinge 3, so it does not affect the appearance. After the hinge 3 is inserted into the hinge cavity 2, the inner wall of the hinge cavity 2 is fixed to the hinge 3 with a hinge screw 4 inside the forearm tube 1, which is convenient for installation and disassembly. These structures are all inside the forearm tube 1 and the cover plate 5. The cable 6 directly enters the closed forearm tube 1 from both sides from the elbow joint 7. There is a circular ear cover 8 buckled at the root of the hinge 3, covering the rotation axis of the elbow joint 7 and the root of the hinge 3. The forearm tube 1, the cover plate 5, the elbow joint 7, and the ear cover 8 together form a closed and smooth streamlined bionic elbow structure.

[0017] In this specification, the present invention is described in only one embodiment. It is obvious that the specific implementation structure can still be changed according to the principle of the present invention. Therefore, the specification and drawings should be regarded as illustrative rather than restrictive.

Claims

1. A prosthetic elbow-arm connection integral structure, characterized by: There are hinge cavities on both sides of the forearm tube. The outer wall of the forearm tube is not riveted to the hinge. After the hinges are installed at both ends of the elbow joint axis, the hinges are inserted into the hinge cavity, and the inner wall of the hinge cavity is fixed to the hinge with screws inside the forearm tube to facilitate installation and disassembly. These structures are all inside the forearm tube and the cover plate. There is also a circular ear cover that is buckled on the root of the hinge at the connection between the hinge and the elbow joint axis. The elbow joint, ear cover, forearm tube and cover plate together form a smooth and streamlined bionic elbow-arm structure.

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