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Patellar prosthesis

A patella prosthesis and patella technology, applied in the direction of joint implants, joint implants, elbow joints, etc., can solve the problems of poor patella surface replacement, failure to take into account patella blood supply and prosthesis fixation, etc., to achieve replacement good effect

Active Publication Date: 2015-07-29
BEIJING AKEC MEDICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to provide a patella prosthesis to solve the problem that the patella prosthesis fixation plug in the prior art cannot take into account both patella blood supply and prosthesis fixation, and the effect of patella surface replacement is not good.

Method used

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Embodiment Construction

[0035] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0036] Such as Figure 1 to Figure 4 As shown, the patella prosthesis in this embodiment includes a metal base, and the metal base has a mating surface, and the mating surface is laser roughened to form a plurality of pointed structures 21 .

[0037] Using the patella prosthesis of this embodiment, a metal base is provided, and a plurality of pointed structures 21 are formed on the mating surface of the metal base after laser roughening. During the patella surface replacement process, the above-mentioned multiple pointed structures 21 cooperate with the infrapatellar fat pad to fix the patella prosthesis. At the same time, the contact area between the multiple pointed structures 21 and the in...

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Abstract

The invention provides a patellar prosthesis, which comprises a metal basal body, the metal basal body is provided with a mating surface, and after the mating surface is processed by laser texturing, a plurality of pointed structures (21) are formed. The technical scheme of the invention effectively solves the problems that patellar prosthesis-fixing bolts in the prior art cannot take both patellar blood supply and prosthesis fixation into consideration and the patellar replacement effect is not good.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a patella prosthesis. Background technique [0002] At present, total knee arthroplasty (TKA for short) is an effective and mature treatment for various knee joint inflammations, and the good and good rate of the surgery has been increasing in recent years. In the absence of patellar replacement in the initial TKA, a high rate of prepatellar pain occurred postoperatively. With the gradual understanding of the mechanical mechanism of the patella, more and more people pay attention to the role of the patella in the movement of the knee joint. Patellar resurfacing has been proposed to reduce the incidence of prepatellar pain after TKA. [0003] However, patellar resurfacing will lead to a series of complications related to patellar prosthesis, such as patellar prosthesis wear, loosening and fracture, etc. These complications can directly lead to the failure of patellar...

Claims

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Application Information

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IPC IPC(8): A61F2/38
Inventor 王彩梅
Owner BEIJING AKEC MEDICAL
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