Thermal bone cement removal system with tissue protector
US5843086A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 1997 |
| Grant date | Dec 1, 1998 |
| Priority date | — |
| Expiry date | Jul 29, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2210/0071
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An instrument assembly for removing, as single segments, a mass of previously formed thermoplastic bone cement from a bone in a patient. A first component of the assembly includes an elongate probe having a heater tip assembly provided at one end thereof. A second component of the assembly includes an electrical system for supplying electricity to the aforesaid heater tip assembly when appropriately interconnected for effecting a heating of the heater tip. A releasable connectability of the first and second components facilitates a removal of the second component only to be replaced by a third component, namely, a hammer device so that repeated impact forces can be imparted to the elongate probe and the heater tip assembly of which is embedded in the bone cement until the impact force will cause the bone cement to crack and permit a segment thereof to be removed while being fixedly coupled to the elongate probe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.