Methods of making and using ultrasonic handpiece
US5484398A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 17, 1994 |
| Grant date | Jan 16, 1996 |
| Priority date | — |
| Expiry date | Mar 17, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S604/902
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An ultrasonic surgical handpiece for surgery on a patient has a handpiece with distal and proximal ends on a housing thereof for manipulation by a surgeon. A vibrator is carried within a hollow inside of the housing. A tool extends from the vibrator at the distal end to a distal tip and is tubular with a bore along its axis so axial vibrations at high frequency are transmitted to the distal tip. Fluid flows from the distal tip to the vibrator, cools the vibrator and connects to a source of suction at the proximal end. A flue carried cantilever on the distal end extends about the tool so a space is between the tool and the flue for guiding fluid from the distal end to the distal tip. A port located through the tool connects between the space and the bore and is axially positioned near the distal end to collect fluid. An inlet on the flue is near the distal end for fluid provided by a supply. The inlet is axial distal of the port and/or may meter fluid to a preset range. The port may be at, near or toward a low stress region of the tool. The vibrator is piezo. The port can be diametrically opposed to the inlet. Holes may be located through the tool near the distal tip to prevent mist…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.