Blood sampling devices

Details Blood sampling devices Blood sampling devices

1988-05-02

1989-09-26

Thaler, Michael H.

Surgery

Truss

Pad

128329R, A61B 2734

Patent

active

048692492

ABSTRACT:
A disposable pricker has a body (1,2) lance (4) spring (3) and cap (13) integrally moulded in plastics, the cap being subsequently separable. The lance tip (5) is a needle embedded in the moulding and relatively inaccessible within the body. Formations (17) within the cap compress the spring (3) as the cap is fitted until they are flexed aside by co-operation with abutments (7) within the body. The lance (4) is released and shoots forward for the tip (5) momentarily to project proud of the cap (13). The latter is made captive to the lance (4) during this movement and cannot be removed to repeat the operation. The lance tip (5) thus remains concealed within the cap (13). In another capless version, squeezing the body (31) wedges the lance (36) back until it escapes and is shot forward by a spring (38). On recovery within the body, the lance is blocked from reverting to the position where it can be re-actuated.

REFERENCES:
patent: 3030959 (1962-04-01), Grunert
patent: 4449529 (1984-05-01), Burns et al.
patent: 4452243 (1984-06-01), Leopoldi et al.

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