Surgical tool with integrated pressure and flow sensors
US6740058B2 · kind B2 · utility
44Cited by
23References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 8, 2001 |
| Grant date | May 25, 2004 |
| Priority date | — |
| Expiry date | Oct 20, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2090/064
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A surgical tool with a rigid body including a needle portion for entering tissue includes a fluid flow channel formed therethrough. A sensor is integrally formed on the tool to detect changing conditions (pressure and/or flow) in the channel. The sensor signal may be used to provide feedback control of pumping of fluid through the channel. The tool may be a micromachined silicon tool with the sensor integrally formed thereon from a silicon nitrate membrane and polysilicon resistors. The tool may be an ultrasonically activated cutting tool, which may be bonded to a package at a node thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.