Roller infusion apparatus

Details Roller infusion apparatus Roller infusion apparatus

1981-06-08

1983-11-22

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

A61M 3700

Patent

active

044166621

ABSTRACT:
An infusion apparatus consisting of a housing containing an electric motor, the housing having a channel-shaped chassis integrally connected thereto and laterally offset therefrom. A toothed drive roller is transversely journalled in the chassis and is drivingly coupled to the motor by meshing bevel gears. The chassis side walls have opposing vertical grooves receiving the peripheral radial flange of the barrel of a syringe, holding the barrel so that its plunger is transversely engaged on the toothed drive roller. A clamping rod is pivoted to the upper portion of one of the side walls and is lockingly engageable with the other side wall. The clamping rod carries a pressure pad which clampingly engages on the plunger to hold it in driving engagement with the toothed roller. A cannula is detachably connected to the discharge end conduit of the barrel. The discharge conduit is provided with a needle penetrable through a self-closing septum provided in the cannula connector member. The leading end of the cannula may be formed with a solid reduced end suture connectable to a needle which can be passed through a patient's skin tissue to draw the cannula with it. The cannula is formed with a slit adjacent the suture portion to allow air expulsion and then drug expulsion after the cannula has been adjusted to locate the slit subcutaneously.

REFERENCES:
patent: 1892485 (1932-12-01), Du Four
patent: 2768623 (1956-10-01), Marchand
patent: 3198385 (1965-08-01), Maxwell
patent: 3336925 (1967-08-01), Thompson
patent: 3415419 (1968-12-01), Jewett et al.
patent: 3456649 (1969-07-01), Jewett
patent: 3833030 (1974-09-01), Waldbauer, Jr.
patent: 3838688 (1974-10-01), May et al.
patent: 3923060 (1975-12-01), Ellinwood, Jr.
patent: 3993064 (1976-11-01), McCarthy et al.
patent: 3993065 (1976-11-01), Szabo et al.
patent: 4269185 (1981-05-01), Whitney et al.

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