Hollow needle for medical use and a laser method for manufacturi

Details Hollow needle for medical use and a laser method for manufacturi Hollow needle for medical use and a laser method for manufacturi

1994-10-31

1996-05-14

Rosenbaum, C. Fred

Surgery

Miscellaneous

Methods

604239, 604264, 604274, A61B 1900

Patent

active

055158714

ABSTRACT:
The hollow needle (1) for medical use comprises a duct (10), which usually contains an aperture (11) which is elliptic or similar to an ellipse. The edge (14) of this aperture (11) is rounded by melting in the converging part (14') when regarded from the point (1') of the hollow needle (1). The process for rounding the edge (44) by melting uses a laser (45) which is pulsated or operates continuously, in the effective range (45') of which the part (44') to be rounded of the edge (44) lies.

REFERENCES:
patent: 2717599 (1955-09-01), Huber
patent: 3064651 (1962-11-01), Henderson
patent: 4759746 (1988-07-01), Straus
patent: 4808170 (1989-02-01), Thornton et al.
patent: 4838877 (1989-06-01), Massau

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