High velocity tissue sample cutter
US5476099A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 31, 1994 |
| Grant date | Dec 19, 1995 |
| Priority date | — |
| Expiry date | Aug 31, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/2946
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Samples of tissue are cleanly severed from locations deep within the body of a patient. A catheter has a catheter body constructed for placement through a narrow passageway and includes at its distal portion a cutter. The cutter includes a moveable cutting member that can be controllably actuated to sever the tissue sample from the location deep within the body. A firing mechanism is provided at a proximal end of the catheter. The firing mechanism includes, for example, a moveable actuating element connected to the cutting member and a preaccelerator element. The preaccelerator element is accelerated to high speed before transferring force to the actuating element to cause the actuating element to accelerate to rapidly actuate the moveable cutting member and cleanly cut the sample. The cutting element may be a jaw-form that has sharp end cutting edges and is constructed to provide shearing action.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.