Body heat actuated parenteral device

Details Body heat actuated parenteral device Body heat actuated parenteral device

2006-03-21

2006-03-21

Hayes, Michael J. (Department: 3763)

Surgery

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

Treating material introduced into or removed from body...

C604S192000

Reexamination Certificate

active

07014623

ABSTRACT:
A needle apparatus (10) includes a tubular needle (20) with a sharp point (22). The apparatus also includes a shielding means and movement means (17) in which the movement means is temperature sensitive. Upon the needle being inserted into tissue the movement means is heated by body heat and causes the needle and the shielding means to move relatively to render the sharp point safe. Preferably the movement means contains shape memory alloy.

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patent: 5501672 (1996-03-01), Firth et al.
patent: 5795336 (1998-08-01), Romano et al.
patent: 2 327 614 (1999-02-01), None
patent: 00/40281 (2000-07-01), None
patent: 00/40287 (2000-07-01), None

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