Dual-lumen fistula needle

Details Dual-lumen fistula needle Dual-lumen fistula needle

1985-04-16

1987-06-23

Pellegrino, Stephen C.

Surgery

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

Material introduced into and removed from body through...

604 4, 604272, A61M 500

Patent

active

046750045

ABSTRACT:
A dual-lumen fistula needle for use in hemodialysis treatment. The needle has a gently tapered neck and is divided into arterial and venous lumens by a center septum which is bonded in place. The septum is formed so that the lumens have substantially equal cross sections substantially throughout the length of the needle to promote equal flow rates in the lumens. The diameter of the needle at the tip is similar to that of single-lumen needles in order to reduce discomfort on insertion.

REFERENCES:
patent: 2175726 (1939-10-01), Gebauer
patent: 4073297 (1978-02-01), Kopp
patent: 4098275 (1978-07-01), Consalvo
patent: 4134402 (1979-01-01), Mahurkar
patent: 4203436 (1980-05-01), Grimsrud
patent: 4543087 (1985-09-01), Sommercorn et al.
patent: 4583968 (1986-04-01), Mahurkar

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