Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1998-08-21
1999-08-10
Yasko, John D.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604195, A61M 500
Patent
active
059351047
ABSTRACT:
A syringe for giving medical injections which has an internal mechanism for releasing and retracting a needle into the syringe after the injection has been given and retaining the needle and a hollow plunger inside the barrel of the syringe to reduce the risk of accidental needle sticks. The interior of the hollow plunger is initially hydraulically sealed off by a plunger front end wall from the fluid chamber of the syringe to prevent fluid from entering the interior of the hollow plunger. After the plunger has been depressed to expel fluid from the barrel, further depression of the plunger causes cutting punch type members to sever a disc shaped flange portion of a stem type needle retaining member and the plunger front end wall thereby permitting the spring to propel the needle and needle retaining member into the hollow plunger thereby retracting the needle and retaining member inside the barrel.
REFERENCES:
patent: 4728320 (1988-03-01), Chen
patent: 4838863 (1989-06-01), Allard et al.
patent: 4921486 (1990-05-01), DeChellis et al.
patent: 4950241 (1990-08-01), Ranford
patent: 4973316 (1990-11-01), Dysarz
patent: 4978343 (1990-12-01), Dysarz et al.
patent: 5000738 (1991-03-01), LaVallo et al.
patent: 5019044 (1991-05-01), Tsao
patent: 5024616 (1991-06-01), Ogle, II
patent: 5049133 (1991-09-01), Villen Pascual
patent: 5064419 (1991-11-01), Gaarde
patent: 5180370 (1993-01-01), Gillespie
patent: 5188599 (1993-02-01), Botich et al.
patent: 5190526 (1993-03-01), Murray et al.
patent: 5267961 (1993-12-01), Shaw
patent: 5389076 (1995-02-01), Shaw
patent: 5423758 (1995-06-01), Shaw
patent: 5542927 (1996-08-01), Thorne et al.
patent: 5769822 (1998-06-01), McGary et al.
patent: 5800403 (1998-09-01), Pressly, Sr. et al.
patent: 5843034 (1998-12-01), Redfern et al.
Gillespie Elgene R
Janek Gregory A
Lee Morris M
Germain Lee A
Milliken Paul E
Safety Medical Manufacturing, Incorporated
Weber Ray L
Yasko John D.
LandOfFree
Safety medical syringe with retractable needle does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Safety medical syringe with retractable needle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Safety medical syringe with retractable needle will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1114521