Ulna coronal process prosthesis device and mounting machine and mounting method thereof

An installation method and coronoid technology, applied in the direction of prosthesis, skull, bone implants, etc., can solve problems such as difficult positioning of ulnar coronoid prosthesis, unfavorable prosthesis positioning, drilling, and increased pressure on the joint surface , to achieve the effect of preventing frequent elbow movements, reducing treatment pain, and reducing patient trauma

Active Publication Date: 2020-11-17
BEIJING JISHUITAN HOSPITAL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the irregular surface shape of the ulnar articular surface, it is not conducive to the positioning of the prosthesis, drilling and other operations, and the ulnar coronoid prosthesis has a high requirement for the compliance of the ulnar articular surface. The prosthesis is installed on the ulna. Not only is it difficult to complete the positioning of the ulnar coronoid prosthesis, the drilling of the ulna, and the fixation of the ulnar coronoid prosthesis, but also many operational difficulties; In addition, if the installation process is not well controlled, the gap between the articular surface of the ulnar coronoid prosthesis and the ulnar articular surface is likely to be too large, which will lead to an increase in the postoperative articular surface pressure, resulting in unbearable pain in the affected area of ​​the patient

Method used

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  • Ulna coronal process prosthesis device and mounting machine and mounting method thereof
  • Ulna coronal process prosthesis device and mounting machine and mounting method thereof
  • Ulna coronal process prosthesis device and mounting machine and mounting method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0047] Embodiment 1 provides an ulnar coronoid prosthesis device, and its structure will be described in detail below.

[0048] refer to Figure 1 to Figure 3 , the ulnar coronoid prosthesis device includes a coronoid prosthesis 1 , an ulnar implant bolt 2 and a locking screw 3 .

[0049] Wherein, the coronoid prosthesis 1 includes a mushroom body 11 and a positioning post 12, and the mushroom body 11 and the positioning post 12 are fixedly connected. Preferably, the positioning post 12 is vertically fixed at the middle of the bottom plane of the mushroom body 11 , and a screw hole 7 is provided in the bottom of the positioning post 12 . Wherein, the ulnar implant bolt 2 is composed of a screw rod and a bolt head, wherein the screw rod is provided with threads.

[0050] The outer surface of the mushroom body 11 is surrounded by an outer curved surface and a bottom plane, wherein the bottom plane is in contact with the articular surface of the ulna. In order to fix and move ...

Embodiment 2

[0058] Embodiment 2 provides an ulnar coronoid prosthesis installer, which is used to replace the ulnar coronoid prosthesis of the patient with the ulnar coronoid prosthesis in Embodiment 1, and its structure will be described in detail below.

[0059] refer to Figure 4 with Figure 5 , the ulnar coronoid prosthesis installer includes a guide seat 10, a C-shaped fixed arm 20, a threaded sleeve 30, a positioning post drilling sleeve 40, a Kirschner wire sleeve 50, a positioning post through-hole hollow drill bit and a bolt head hole Core drill bits. Wherein, the maximum outer diameter of the through-hole hollow drill bit of the positioning post is equal to the outer diameter of the positioning post 12 , and the maximum outer diameter of the hollow drill bit in the bolt head hole is equal to the outer diameter of the ulnar implanted bolt 2 .

[0060] A fixed head 300 and a first sleeve 310 are respectively provided at the top and bottom of the threaded sleeve 30 , wherein the...

Embodiment 3

[0080] Embodiment 3 provides a method for installing the ulnar coronoid prosthesis device. Using the ulna coronoid prosthesis installer provided in Embodiment 2, use the Chinese invention patent "A Simulated Demonstration Model for Orthopedics" (application number CN201821079192.X The ulna model involved in ) is the experimental object, wherein the ulna model 8 is bound and connected to the radius model through a connecting rope assembly, which is easy to disassemble. Provide training operation opportunities to improve the doctor's operation level of ulnar coronoid prosthesis replacement surgery, refer to Figure 9 As shown, the installation method includes the following steps:

[0081] Step A: Use the ulnar coronoid prosthesis installer to drill upward through the lower surface of the ulna model 8 to drill the positioning post through holes, and the positioning post through holes are respectively exposed on the upper surface of the ulnar model 8. The top hole and the lower su...

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Abstract

The invention discloses an ulna coronal process prosthesis device and a mounting machine and mounting method of the coronal process prosthesis device. The ulna coronal process prosthesis device comprises a coronal process prosthesis, an ulna implantation bolt and a locking screw, wherein the mounting machine of the ulna coronal process prosthesis comprises a guide seat, a C-shaped fixing arm, a threaded casing pipe, a positioning column drilling casing pipe and a kirschner wire casing pipe. According to the ulna coronal process prosthesis device as well as the mounting machine and mounting method thereof, a system for ulna coronal process replacement surgery is formed, the mounting problems of positioning, drilling, fixing and the like of the ulna coronal process prosthesis are well solved, and the mounted ulna coronal process prosthesis is good in stability and anti-rotation capacity and high in reliability. The treatment time of the patient with the ulna coronal process fracture is shortened, the treatment pain of the patient is reduced, and a new choice is provided for treatment of the patient with the coronal process comminuted fracture.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to an ulnar coronoid prosthesis device, an installer and an installation method thereof. Background technique [0002] The choice of treatment plan for ulnar coronoid fractures is closely related to the fracture type, the degree of comminution of the fracture fragments, the damage of the medial and lateral collateral ligaments, and the anterior joint capsule. The role of the coronoid process of the ulna is very important and very fragile. Once a comminuted fracture occurs, especially an irreparable fracture of the coronoid process, the current conventional internal fixation methods such as plates, screws and Kirschner wires cannot be cured, and it is easy to cause osteoporosis The articular surface nonunion of the elderly, the treatment of ulnar coronoid fracture is a little careless, which can easily lead to elbow dislocation. With the development of artificial prosthesi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/28A61F2/46
CPCA61F2/28A61F2/4603A61F2002/2896Y02P10/25
Inventor 鲁谊杨斌宁吴关张海龙方明朱伟强傅彦棉
Owner BEIJING JISHUITAN HOSPITAL
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