Set of double needles for injecting liquid medicine

Details Set of double needles for injecting liquid medicine Set of double needles for injecting liquid medicine

1989-05-26

1991-06-25

Pellegrino, Stephen C.

Surgery

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

Treating material introduced into or removed from body...

604164, A61M 500

Patent

active

050263501

ABSTRACT:
A set of double needles for injecting liquid medicine into a patient through a single injection point contains an inner curved needle slidably and rotatably supported within a shorter outer needle. The distal end of the inner needle can protrude from the outer needle to extend sideways, in a controlled direction and extent. The direction in which the inner needle point is inserted into the patient is determined by controllably rotating and engaging a base of the inner needle with respect to a base of the outer needle, with structure provided to prevent unintentional relative rotation of the needles. Liquid medicine may thus be infused into the body of a patient at a number of locations at a preselected depth into the body and within a zone laterally extending from the distal end of the outer needle. The inner needle, which may have a lateral hole at its end, is withdrawable within the outer needle and straightens within the latter during the course of such a withdrawal. A flexible adaptor is provided between the needles and a supply of liquid medicine.

REFERENCES:
patent: 2219605 (1940-10-01), Turkel
patent: 2590895 (1952-04-01), Scarpellino
patent: 3487834 (1970-01-01), Smith, Jr. et al.
patent: 3782381 (1974-01-01), Winnie
patent: 3856009 (1974-12-01), Winnie
patent: 4013080 (1977-03-01), Froning
patent: 4511356 (1985-04-01), Froning et al.
patent: 4682981 (1987-07-01), Suzuki et al.
patent: 4846799 (1989-07-01), Tanaka et al.

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