Fluid injector

Details Fluid injector Fluid injector

1995-10-16

1997-05-27

Rimell, Sam

Surgery

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

Treating material introduced into or removed from body...

604131, A61M 520

Patent

active

056327307

ABSTRACT:
An injector to deliver a variable dose into a living creature, such as an animal, the injector having a mounting element with an elongated, straight handle to be gripped by the user, a cylinder fixed to the mounting element, a piston movably associated within the cylinder to define a variable volume working space, a tube connected to the piston and fluidly connected to the space through the piston, a needle fluidly communicating with the space, check valves controlling the flow of fluid, a pad associated with the needle and the mounting element, the pad having a face with an oblique angle of engagement with the animal, the piston movable to a cocked position by the tube where it is retained until automatically released upon said pad contacting the animal and being moved toward the body, and thereby permitting the needle to be inserted into the animal, the pad engaging a latch binding the tube in the cocked position for releasing the tube and piston for passage of fluid from the space through the needle, a pawl for holding the latch in a non-tube binding position until a full dose of fluid has been ejected through the needle and further ensuring full needle penetration, and an element connected to the tube for engagement with the handle for varying the amount of the working space.

REFERENCES:
patent: 530187 (1894-12-01), Laskey
patent: 3016897 (1962-01-01), Kendrick
patent: 3114370 (1963-12-01), Kayler
patent: 3430626 (1969-03-01), Bergman
patent: 3494358 (1970-02-01), Fehus
patent: 3809083 (1974-05-01), Westergaard
patent: 4403989 (1983-09-01), Christensen et al.
patent: 4487602 (1984-12-01), Christensen et al.
patent: 4642099 (1987-02-01), Phillips et al.
patent: 4676781 (1987-06-01), Phillips et al.
patent: 4699154 (1987-10-01), Lindgren
patent: 4717383 (1988-01-01), Phillips et al.
patent: 5141496 (1992-08-01), Dalto et al.
Copy-1 page document entitled "Syringes and Hypodermic Needles II" from Jorgensen Laboratories, Inc.-1994 Product Catalog (p. 9).
Copy-1 page document entitled "II Syringes and Hypodermic Needles" from Jorgensen Laboratories, Inc.-1994 Product Catalog.
Copy-1 page document entitled "Hypodermic Syringes & Needles" from Ideal Instruments 1993 Product Catalog (p. 3).

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