A joint endoprosthesis system has first and second prosthetic components. The second prosthetic component has a bearing surface. The interface of the bearing surface and the first prosthetic component defines the joint articulation. A signal source and sensor are affixed on opposite sides of the joint articulation. The signal source generates a first signal that is received by the sensor. The sensor generates a second signal that has a characteristic that varies depending on the distance between the sensor and the signal source. A transmitter transmits a signal. The signal has a characteristic that varies depending on the characteristic of the second signal. This system can be used to measure a dimension of the joint space and to determine whether a dimension of the joint space has changed over time. The system may alternatively use magnets and magnetic sensors.
申请公布号
WO2005039440(A3)
申请公布日期
2006.03.02
申请号
WO2004US21845
申请日期
2004.07.09
申请人
DEPUY PRODUCTS, INC.;DISILVESTRO, MARK, R.;DIETZ, TERRY;SHERMAN, JASON, T.
发明人
DISILVESTRO, MARK, R.;DIETZ, TERRY;SHERMAN, JASON, T.