Patent · US Active

Spring-less check valve for a handpiece

US8291933B2 · kind B2 · utility

1Cited by

103References

17Claims

0Family size

Assignee

Novartis AG · CH

Inventors

John Morgan Bourne · Irvine, US
Guangyao Jia · Irvine, US
Glenn Sussman · Lake Forest, US

Key dates

Filing date	Sep 25, 2008
Grant date	Oct 23, 2012
Priority date	—
Expiry date	May 14, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/791
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A hand piece for a surgical instrument is provided. The handpiece has an inlet, a chamber (with upstream and downstream portions), a flow control member, a pulse engine, and an outlet. The inlet communicates with the upstream portion of the chamber. The downstream portion of the chamber communicates with the engine. The engine communicates with the outlet. In a closed position of the member, flow from the inlet moves the member to the open position thereby allowing flow through the flow path. In the open position, pulses from the engine move the member to the closed position before pulses from the pulse engine can flow through the flow path, thereby preventing flow through the flow path.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.