Insulated infusion and aspiration probe

Details Insulated infusion and aspiration probe Insulated infusion and aspiration probe

1989-10-02

1991-06-18

Rosenbaum, C. Fred

Surgery

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

Material introduced into and removed from body through...

604 28, 604 35, 604284, A61M 300

Patent

active

050246542

ABSTRACT:
A surgical instrument is provided which has two concentric transfer tubes: an outer tube and an inner tube. One tube is used for aspiration of fluid, the other for infusion of fluid. The concentric tubing section has proximal and distal ends, the distal end being tapered and having openings for simultaneous aspiration and infusion eye fluid. On the proximal end, the inner transfer tube extends a proximal length greater than the outer transfer tube. The concentric inner and outer transfer tubes are both connected to independent supply tubes. The proximal end of the inner transfer tube, being longer than the outer transfer tube, pierces and protrudes through the wall of the flexible fluid tube connected to the proximal end of the outer tube. This protrusion provides a place on the inner transfer tube for its own independent connection to a supply tube. The tubing assembly is contained within and supported by an elongated, generally tubular housing. This housing insulates the tubes by means of an air space substantially along the full length of the housing.

REFERENCES:
patent: 2257369 (1941-09-01), Davis
patent: 2393002 (1946-01-01), Smith
patent: 2492384 (1949-12-01), Kaslow
patent: 3512517 (1970-05-01), Kadish et al.
patent: 4553957 (1985-11-01), Williams et al.
patent: 4819664 (1989-04-01), Nazari

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