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Calcaneus and talus prosthesis

A talus and prosthesis technology, applied in the direction of prosthesis, additive manufacturing, medical science, etc., can solve the problem of prolonged postoperative recovery time, difficulty in initial growth of calcaneal talus prosthesis, and easy occurrence of calcaneal talus prosthesis and preserved bone. Looseness etc.

Active Publication Date: 2021-09-10
BEIJING LIDAKANG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned related technical solutions, the inventors found that the calcaneus and talus prosthesis and the retained bone are only fixed by sutures. The strength and stability of the connection between the body and the reserved bone will bring difficulties to the initial growth of the calcaneal prosthesis, which will greatly prolong the postoperative recovery time

Method used

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  • Calcaneus and talus prosthesis
  • Calcaneus and talus prosthesis
  • Calcaneus and talus prosthesis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] refer to figure 1 and figure 2 , the application provides a calcaneus and talus prosthesis. The calcaneus and talus prosthesis 1 has a fitting plate 3 corresponding to the end face of the retained bone 2, and the fitting plate 3 is made of a porous grid structure layer, wherein the porous grid structure layer The thickness of the porous mesh structure layer is 2mm, and the material of the porous mesh structure layer can be one of the porous structure of 3D printed bone trabecula, sprayed titanium / tantalum coating or hydroxyapatite coating; There is at least one fixation screw 4, and one end of the fixation screw 4 passes through the calcaneal and talar prosthesis 1 and extends into the retained bone 2. In the embodiment of the present application, there are three fixation screws 4. Of course, in other examples, the fixation screw 4 Can be provided with one or more; Offer at least one suturing hole 12 that is convenient to suturing ligament or soft tissue on the calcan...

Embodiment 2

[0051] refer to Figure 5 and Figure 6 , The difference between the second embodiment and the first embodiment is that: an adjustment member 7 is provided between the first part 51 and the second part 52; the adjustment member 7 includes a threaded rod 71 arranged between the first part 51 and the second part 52 , the threaded rod 71 and the second part 52 are threaded and coaxial, the end of the threaded rod 71 away from the second part 52 is fixedly connected with the end face of the first part 51 close to the second part 52, and the second part 52 is provided with a threaded rod 71 screwed into the threaded hole; the outer peripheral surface of the threaded rod 71 is provided with a protective sleeve 72, the protective sleeve 72 is slidingly connected to the second part 52, and the end of the protective sleeve 72 close to the first part 51 is connected to the end of the first part 51 close to the second part 52 The end surfaces are fixedly connected, and the end surface o...

Embodiment 3

[0054] refer to Figure 7 , The difference between the third embodiment and the first embodiment is that: an adjustment member 7 is provided between the first part 51 and the second part 52; the adjustment member 7 includes an adjustment rod 73 arranged between the first part 51 and the second part 52 , the adjusting rod 73 is slidingly connected and coaxial with the second part 52, the end of the adjusting rod 73 away from the second part 52 is fixedly connected with the end face of the first part 51 close to the second part 52, and the second part 52 is provided with an adjusting rod 73 Sliding chute 522; the adjustment member 7 includes a plurality of springs 74 uniformly arranged on the side of the adjustment rod 73 along the axial direction of the adjustment rod 73. In the embodiment of the present application, there are six springs 74, and two springs 74 are adjusted along the The axis of the rod 73 is arranged symmetrically; the spring 74 is arranged inside the adjustme...

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Abstract

The invention relates to the technical field of medical prostheses, in particular to a calcaneus and talus prosthesis which is characterized in that the calcaneus and talus prosthesis is provided with a fitting plate corresponding to a reserved bone and is provided with at least one fixing screw, and one end of each fixing screw is screwed into the calcaneus prosthesis and extends outwards from the fitting plate; when the calcaneus and talus prosthesis is replaced, firstly, the lesion calcaneus is cut off, the needed calcaneus and talus prosthesis is printed in a 3D mode, secondly, the multiple fixing screws are screwed into the calcaneus and talus prosthesis and extend into the reserved bone through the attaching plate, and therefore the calcaneus and talus prosthesis is connected with the reserved bone; finally, the ligament and the soft tissue are attached to the calcaneus and talus prosthesis through a suture line and a suture hole, and postoperative recovery is further facilitated. By arranging the fixing screws, the connecting strength and stability of the calcaneus and talus prosthesis and the reserved bone are guaranteed, the possibility that the calcaneus and talus prosthesis and the reserved bone loosen is reduced, and the effects of shortening the postoperative recovery time and relieving the pain of a patient are achieved.

Description

technical field [0001] The present application relates to the technical field of medical prosthesis, in particular to a calcaneal and talus prosthesis. Background technique [0002] The calcaneus is the largest tarsal bone in the foot. The articular surface of the calcaneus and the articular surface of the talus form the calcaneal joint, which is used to carry about 45% of the body weight of the human body. The talus, the distal end of the tibia, and the lower end of the fibula together form the ankle joint. Largest weight-bearing joint. [0003] When tumors or lesions occur in the calcaneus and talus of the human body, it is usually necessary to surgically remove the diseased calcaneus and talus, and then replace the resected diseased bone with the calcaneus and talus prosthesis; the calcaneus and talus prosthesis has a corresponding end surface of the retained bone Fitting plate, and there are multiple suture holes for the passage of sutures; when the prosthesis is replac...

Claims

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Application Information

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IPC IPC(8): A61F2/42A61F2/30
CPCA61F2/4202A61F2/30942A61F2002/4217A61F2002/4207A61F2002/30688A61F2002/30528A61F2002/30507A61F2002/30985A61F2002/3055
Inventor 郝改平
Owner BEIJING LIDAKANG TECH
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