Surgical suture needle of the taper point type

Details Surgical suture needle of the taper point type Surgical suture needle of the taper point type

1991-01-16

1992-03-31

Pellegrino, Stephen C.

Surgery

Instruments

Suturing needle

606224, A61B 1700

Patent

active

051004321

ABSTRACT:
A surgical suture needle of the taper point type includes a proximal end portion defining a gut-mounting portion having a hole to which a gut is to be attached, an intermediate portion defining a main body portion having a generally uniform cross-sectional area throughout an entire length thereof, and a distal end portion defining a tapered portion whose cross-sectional area decreases progressively toward a distal end of the suture needle which is pointed. In order to enhance the ability of the suture needle to pierce into an artificial blood vessel, the length of the tapered portion is not less than 9D where D represents a diameter of an imaginary circle having the same cross-sectional area as that of the main body portion. Also, in view of the bending strength of the suture needle, the length of the tapered portion is less than 2/3L where L represents the overall length of the suture needle.

REFERENCES:
patent: 2841150 (1958-07-01), Riall
patent: 3038475 (1962-06-01), Orcutt
patent: 3160157 (1964-12-01), Chisman
patent: 3892240 (1975-07-01), Park
patent: 4957502 (1990-09-01), Takase

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