Indwelling needle

Details Indwelling needle Indwelling needle

2011-03-29

2011-03-29

Sirmons, Kevin C (Department: 3767)

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

C604S161000, C604S164080

Reexamination Certificate

active

07914501

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.

REFERENCES:
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patent: 2002/0120215 (2002-08-01), Crawford et al.
patent: 2004/0044313 (2004-03-01), Nakajima
patent: 2005/0096599 (2005-05-01), Crawford et al.
patent: 2007/0185456 (2007-08-01), Nakajima
patent: 1201261 (2002-05-01), None
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patent: 1475124 (2004-11-01), None
patent: 10-085333 (1998-04-01), None
patent: 2002-330945 (2002-11-01), None
patent: 2003-180829 (2003-07-01), None

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