Internal spreader for knee joints

A knee joint and spreader technology, which is applied in the field of medical devices, can solve the problems of not reducing cartilage and meniscus damage, and not being able to increase the range of meniscus exposure, so as to achieve high matching and reduce damage.

Inactive Publication Date: 2016-02-10
杭州市萧山区第一人民医院
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0004] Although the above solution solves the shortcomings of the existing technology to a certain extent, it cannot increase the exposure range of the meniscus, and cannot reduce the damage of the cartilage and meniscus. It is still difficult for relevant personnel to perform arthroscopic observation and instrument operation on the posterior corner of the medial meniscus.

Method used

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  • Internal spreader for knee joints

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Embodiment

[0025] like figure 1 As shown, the knee joint internal spreader includes an arc-shaped upper spreader 1 matched with the intercondylar fossa of the knee joint and an arc-shaped lower spreader 2 matched with the intercondylar ridge, and the arc-shaped upper spreader 1 It is cross-connected with the middle part of the arc-shaped spreader 2. When the knee joint internal spreader is placed between the intercondylar fossa and the intercondylar ridge of the knee joint and the knee joint is in a straight state, it is located between the intercondylar fossa and the condyle of the knee joint. The posterior gap at the posterior end of the intercrista is distracted. When in use, the knee joint should be flexed first, and the intercondylar fossa and the intercondylar ridge of the knee joint will form a front-end gap for the internal spreader of the knee joint to be placed. Between the inter-ridges, the outer support foot 5 of the arc-shaped spreader body 2 is inserted into the lateral co...

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Abstract

The invention belongs to the technical field of medical instruments and particularly relates to an internal spreader for knee joints. The internal spreader comprises an upper arc-shaped spreading body matched with the fossa intercondyloidea of the knee joints and a lower arc-shaped spreading body matched with the intercondylar eminence of the knee joints, wherein the middles of the upper arc-shaped spreading body and the middle of the lower arc-shaped spreading body are in cross connection. When the internal spreader for the knee joints is placed between the fossa intercondyloidea and the intercondylar eminence of the knee joints and the knee joints are in the straightened state, rear-end clearances at the fossa intercondyloidea and the intercondylar eminence of the knee joints are spread. The internal spreader has the following advantages: spreading of the knee joints are carried out in the knee joint straightening process by virtue of size changes of the clearances in the knee joint flexion and extension process, and the rear inside clearances are opened to increase the exposing range of the meniscus, so that convenience is brought for related persons to perform arthroscopy observation and instrument operation on the posterior horn of the meniscus medialis.

Description

technical field [0001] The invention belongs to the technical field of medical devices, in particular to a knee joint internal spreader. Background technique [0002] At present, during knee arthroscopy and treatment, the joint space is mainly opened through the valgus stress of the knee joint, but the posteromedial angle of the medial meniscus is already close to the joint midline. Even if the medial space is large enough, the posteromedial angle cannot be well exposed, such as Excessive valgus may cause damage to the medial collateral ligament. In addition, due to the special anatomical position of the posterior horn of the medial meniscus, it is difficult for relevant personnel to perform arthroscopic observation and instrument operation. The method of meniscus repair and suture led to the abandonment of treatment by relevant personnel, forming "technical neglect", and finally made the healing of the medial meniscus repaired worse than that of the lateral meniscus. [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/02
CPCA61B1/317A61B17/0218A61B17/025A61B2017/0268
Inventor 马海涛
Owner 杭州市萧山区第一人民医院
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