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US 5,290,291 AGranted
Method for implant removal
AssigneeHall Surgical Division of Zimmer, Inc.
InventorHarry A. Linden
Life of this patent
Estimating the term…
Abstract
An implant being securely fixed in a bone by a layer of plastic cement is removed by supplying a pressurized fluid to the interface between the cement and the implant.
Claims2
A method for separating an implant secured to a bone with a fixing material from the fixing material, said fixing material forming an interface between the bone and said implant, comprising the steps of:
- utilizing a fluid;
- supplying the fluid to the interface;
- providing means cooperating with the interface for increasing pressure of the fluid at the interface;
- and
- increasing the pressure in the fluid at the interface.
2 more elements
A method for separating an orthopedic implant from a surrounding layer of cement, the cement forming an interface with the implant, comprising the steps of:
- drilling a port through the cement to a point adjacent the interface;
- connecting the port to a pump via means for providing substantially leak free fluid access to the interface;
- activating the pump to supply a fluid to the interface;
- continuing to activate the pump in order to increase pressure in the fluid at the interface;
- and
- removing the implant from the cement.
3 more elements
Dependencies are inferred from the claim text.