Hip arthroplasty trial systems and associated medical devices, methods, and kits

Abstract

Hip arthroplasty trial systems (1, 100, 300, 500, 700) and associated medical devices (10, 110, 310, 510, 710), methods (200, 900, 1000), and kits (1100) are described that can be utilized in situ to complete a femoral head trial. An example embodiment of a hip arthroplasty trial system (1) includes a medical device (10) and a femoral stem (20). The medical device (10) has a head member (12), a spacer (14), a shaft (16), and a locking member (18). The spacer (14) is disposed within the head member (12) and is moveable from a first position to a second position. The shaft (16) is disposed within the head member (12) and contacts the femoral stem (20). The shaft (16) is moveable from a first position to a second position. Movement of the shaft (16) from the first position to the second position moves the spacer (14) from its first position to its second position. The locking member (18) is disposed within the head member (12) and releasably attaches the shaft (16) to the head member (12).

Description

technical field [0001] The present disclosure relates to the field of medical devices. In particular, the present disclosure relates to hip replacement trial systems and associated medical devices, methods and kits. Background technique [0002] Currently, when implanting a femoral head in hip replacement surgery, physicians must individually experiment with several different length femoral head options to determine the desired offset between the femoral head and the femoral shaft. Each trial required the assembly and disassembly of femoral heads of different lengths in order to determine whether the desired offset was achieved, resulting in repeated hip dislocations and repositionings during the trial procedures. This multiple-trial approach, which requires multiple repositionings of the hip joint in order to determine the desired offset between the femoral head implant and the femoral shaft, has significant disadvantages of being complex, time-consuming, and tissue-destru...

AI Technical Summary

Problems solved by technology

Trials required the assembly and disassembly of femoral heads of different lengths in order to determine whether the desired offset was achieved, resulting in repeated hip dislocations and repositionings during the trial procedures

This multiple-trial approach, which necessitates multiple repositionings of the hip joint in order to determine the desired offset between the femoral head implant and the femoral shaft, is complex, time-consuming, and tissue-destructive.

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