Instrument for spinal taps

Details Instrument for spinal taps Instrument for spinal taps

1974-11-04

1976-05-11

Yasko, John D.

Surgery

Truss

Perineal

128221, A61B 500

Patent

active

039555585

ABSTRACT:
An instrument for performing a spinal tap includes a body member carrying a hypodermic needle of non-circular transverse cross section and a sharply beveled tip. A guide block has an obliquely extending complementary non-circular bore which is axially slideably engageable by the needle to maintain its orientation and prevent its axial rotation. In puncturing the spinal column, the needle is guided by the block bore and upon entry, cuts a flap in the spinal column surrounding tissue which flap closes the needle entry opening upon withdrawal of the needle.

REFERENCES:
patent: 2238323 (1941-04-01), Hollingsworth
patent: 2245350 (1941-06-01), Marshall
patent: 2590895 (1952-04-01), Scarpellino
patent: 2705949 (1955-04-01), Silverman
patent: 2830587 (1958-04-01), Everett
patent: 2952256 (1960-09-01), Meader et al.
patent: 3021842 (1962-02-01), Flood
patent: 3053256 (1962-09-01), Cooper et al.
patent: 3090384 (1963-05-01), Baldwin et al.
patent: 3477423 (1969-11-01), Griffith
patent: 3788119 (1974-01-01), Arrigo

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