Blood withdrawal device with movable needle guard member

Details Blood withdrawal device with movable needle guard member Blood withdrawal device with movable needle guard member

1987-09-21

1989-04-11

Hindenburg, Max

Surgery

Truss

Pad

128770, 604198, A61B 500

Patent

active

048196592

ABSTRACT:
Disclosed is a blood withdrawing device including an elongated needle to which is bonded during molding a unitary polymeric structure. This unitary structure has a tube holding section and a locking section for locking a guard member in a permanently forward position which covers the tip of the needle. The guard member is mounted concentrically to the locking member and movable axially along the needl's shaft from a retracted position where the top of the needle is exposed and a forward position where the tip is covered. The locking member includes an elongated stem which is formed during the molding process. A second tip of the needle extends into the tube holding means and is displaced inwardly from an open mouth in the tube holding means which allows a vacuum tube to be inserted into the open mouth.

REFERENCES:
patent: 2559474 (1951-07-01), Son
patent: 3123073 (1964-03-01), Barr et al.
patent: 3734080 (1973-05-01), Petterson et al.
patent: 4139009 (1979-02-01), Alvarez
patent: 4444203 (1984-04-01), Engelman
patent: 4679571 (1987-07-01), Frankel et al.
patent: 4702738 (1987-10-01), Spencer

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