Resecting tool with independent variable axial extension for tool implements and guide sleeves
US6209886A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 1999 |
| Grant date | Apr 3, 2001 |
| Priority date | — |
| Expiry date | Apr 30, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T408/957
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A resecting tool contains a rotatable chuck inside a base for engaging the drive shaft of a motor. The chuck extends into a tubular casing that has an outer actuator sleeve. The sleeve is limited to rotation relative to the casing and is used to move a pair of locking elements or balls in separate helical slots in the casing. Each ball is seated in a collar that abuts a collet receiver inside the casing. During implement changeover, the collar abuts the collet receiver and acts as a brake to prevent accidental actuation of the chuck of the tool. The collet receiver is spring-biased into contact with a first collet which closely receives a tool implement within the resecting tool. The sleeve is used to manipulate the collet to clamp onto and unclamp the tool implement. A collet coupling is located on the front end of the casing and has a collet nut on its forward end. The collet nut houses a second collet with a serpentine cut for engaging and retaining a guide sleeve for supporting the tool implement. Both collets are designed to engage and lock onto tool implements and guide sleeves at variable distances along their axial lengths.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.