Indwelling needle
US7914501B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 5, 2007 |
| Grant date | Mar 29, 2011 |
| Priority date | — |
| Expiry date | Jan 5, 2027 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/3247
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Indwelling needle includes a cylindrical body, a needle having a sharp edge at a tip thereof, a cylindrical hub retaining proximal end of needle and moveable along main body, a protective cover moveable along main body and projecting from main body, and a spring elastically installed between hub and protective cover. First engaging portion of actuating lever is provided on body engaged with first projection of protective cover and second through-hole in hub to allow first retention mechanism to retain indwelling needle in a use state. First engaging portion is moved upward to release first retention mechanism. This separates protective cover and hub from each other under elastic force of spring. Protective cover and hub are thus retained in a housed state by second retention mechanism and third retention mechanism, respectively. This configuration reduces length of member contacting patient in the use state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.