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Knee Unicondylar Pressure Measuring Device and System

A measuring device and knee joint technology, applied in the direction of knee joints, joint implants, joint implants, etc., can solve problems such as inability to ensure the balance of force on the knee joint prosthesis, and inability to perform accurate positioning

Active Publication Date: 2020-09-04
BEIJING YIMAI MEDICAL TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the purpose of the present invention is to provide a knee joint unicondylar pressure measurement device and system to alleviate the problem of the placement and size selection of meniscal pads in the prior art, which often rely on subjective judgments and cannot be accurately positioned. , which leads to the technical problem of not being able to ensure the balanced force of the implanted knee prosthesis

Method used

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  • Knee Unicondylar Pressure Measuring Device and System
  • Knee Unicondylar Pressure Measuring Device and System
  • Knee Unicondylar Pressure Measuring Device and System

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Embodiment 1

[0040] figure 1 A schematic structural view of a knee joint unicondylar pressure measurement device provided by an embodiment of the present invention is shown. like figure 1 As shown, the knee joint unicondylar pressure measurement device includes a pressure measurement head 10 , a connecting portion 20 and a grip handle 30 ; wherein the grip handle 30 is connected to the pressure measurement head 10 through the connection portion 20 .

[0041] The upper surface of the pressure measuring head 10 is provided with a half-moon groove, which is matched with the femoral unicondylar prosthesis. Specifically, in order to facilitate the determination of the size and installation position of the meniscus pad, the shape of the pressure measuring head 10 is the same as that of the meniscus pad that the patient needs to replace. Specifically, the top view, bottom view and left side view of the knee joint unicondylar pressure measurement device provided by the embodiment of the present in...

Embodiment 2

[0058] Figure 8 A schematic structural view of a knee joint unicondylar pressure measurement system provided by an embodiment of the present invention is shown. like Figure 8 As shown, the knee joint unicondylar pressure measurement system includes a terminal device 100, a receiver 200, and a knee joint unicondylar pressure measurement device 300 as in Embodiment 1. The terminal device 100 and the knee joint unicondylar pressure measurement device 300 communicate with the receiver respectively. device 200 connection.

[0059] Specifically, during use, the knee joint unicondylar pressure measurement device 300 is placed in the joint space between the femoral unicondylar prosthesis 400 and the tibial prosthesis 500, and the knee joint unicondylar pressure measurement device 300 sends the pressure data packet to the receiver 200 After receiving the pressure data packet, the receiver 200 performs corresponding processing to generate pressure display data, and sends the pressur...

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Abstract

The invention provides a knee joint unicondylar pressure measuring device and a knee joint unicondylar pressure measuring system. The knee joint unicondylar pressure measuring device comprises a pressure measuring head, a connecting portion and a gripping handle. The gripping handle is connected with the pressure measuring head by the connecting portion; a half-moon-shaped groove is formed in the upper surface of the pressure measuring head and is matched with a femoral unicondylar prosthesis; the pressure measuring head comprises an accommodating cavity, and a pressure sensor is arranged in the accommodating cavity and is used for measuring the pressures on the pressure measuring head and generating pressure signals. The knee joint unicondylar pressure measuring device and the knee joint unicondylar pressure measuring system in an embodiment of the invention have the advantages that the inter-joint pressures between the femoral unicondylar prosthesis and a tibial prosthesis can be measured by the knee joint unicondylar pressure measuring device after the femoral unicondylar prosthesis and the tibial prosthesis are installed in knee joint unicondylar replacement surgery, accordingly, doctors can know the magnitude of the pressures and distribution of the pressures of joint spaces in surgery procedures, the meniscus lining positioning and sizes selection accuracy can be improved, and stress balance of implanted knee joint prostheses can be guaranteed.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a knee joint unicondylar pressure measuring device and system. Background technique [0002] Osteoarthritis is a clinically common orthopedic disease, among which osteoarthritis of the knee joint has a relatively high incidence. In the late stage of knee osteoarthritis, the pain and swelling of the knee joint seriously affect the mobility of the joint. For the later stage of knee osteoarthritis, the typical treatment method is artificial knee replacement. Artificial knee arthroplasty can be divided into total knee arthroplasty and unicompartmental knee arthroplasty according to the degree of preservation of the knee joint. [0003] Unicompartmental knee replacement is the application of MIS (minimally invasive surgery, minimally invasive surgery) minimally invasive technology, so that patients can reduce pain, shorten hospital stay, and quickly restore function. In uni...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B90/00A61F2/46
CPCA61B90/06A61B2017/564A61B2090/064A61F2/461A61F2/4657A61F2002/4666
Inventor 柴伟朱斌杰张岳麦宝钧
Owner BEIJING YIMAI MEDICAL TECH CO LTD
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