Attachable/detachable knee trial

Abstract

The present invention relates to a knee trial that is coupled in advance prior to transplantation of an implant in connection with knee joint replacement so as to confirm the movability of the implant. More particularly, the present invention relates to an attachable / detachable a knee trial comprising a plate trial, an insert trial, and an adapter for easily attaching / detaching the two trials. Theadapter comprises an elastic member on one side thereof such that both ends thereof pressurize the plate trial and the insert trial, respectively, thereby firmly coupling the two trials, and the samecan be attached / detached simply by pressing the adapter with hand and thereby compressing the elastic member. Accordingly, during the knee joint replacement process, an implant with an appropriate size can be selected while applying various trials in a fast and accurate manner, thereby shortening the operation time and lessening the burden on the practitioner and the patient. One side of the adapter is made of plastic such that coupling is enabled without leaving scratches or the like on the plate trial.

Description

technical field [0001] The invention relates to a knee test piece which is pre-engaged before the implant is implanted in knee replacement surgery to confirm the mobility of the above implant, and in particular relates to a test piece comprising a plate; an insert test piece; and a detachable knee test piece that can facilitate the disassembly and assembly of the above two test pieces. One side of the above-mentioned adapter includes an elastic member, and its two ends pressurize the plate test piece and the insert test piece respectively, so as to promote The two test pieces are tightly joined, and at the same time, the disassembly and assembly can be completed by simply pressing the above-mentioned adapter to compress the elastic member. Several test pieces are used in the process of knee joint replacement to complete the selection quickly and accurately. The operation of implants of reasonable size, thereby shortening the operation time, reducing the burden on the operator ...

AI Technical Summary

Problems solved by technology

This operation requires the testing of test pieces of multiple sizes and therefore takes a long time

[0008] According to this kind of knee test piece in the prior art, the temporary attachment of the plate test piece (P) and the insert test piece (A) is not firm enough, especially when the insert test piece of 12-14 mm or more is used, it is still not strong enough. Deviation from plate specimens will occur

In this case, the mobility of the knee joint cannot be accurately assessed and such an inaccurate implant will be placed, adversely affecting the health of the patient

Or when the operation time is extended to obtain accurate evaluation in such an unstable joint state, the patient may be burdened by the long operation time

[0009] Additionally, if figure 1 and figure 2 As shown, in order to ensure the tight joint of each test piece, grooves are formed on one side of the two test pieces to insert and fix the bolt (B) or rod (R), etc., but at this time, due to the excessive force applied during the attachment process , resulting in a longer time-consuming and a burden on the surgeon (Surgeon)

In addition, in order to achieve the purpose of attaching test pieces of other sizes, the process of removing the attached test piece is also very complicated and cumbersome, which will inevitably lead to longer operation time, which will be detrimental to the postoperative health recovery of patients influences

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