Roller infusion apparatus
First Claim
1. An infusion apparatus comprising housing means, a motor mounted in said housing means, a channel-shaped chassis rigidly connected to said housing means and being laterally offset therefrom, a syringe having a barrel with a radial peripheral flange, a smooth-profiled plunger slidably engaged in said barrel, a drive roller means journalled in said channel-shaped chassis with the axis of said roller means being transverse to the length of said channel, said drive roller means having teeth projecting from the circumference thereof and adapted to penetratingly engage said smooth-profiled plunger to drive said plunger in said barrel, means drivingly coupling said motor to said drive roller means, and an annular discharge conduit projecting from the end of the barrel opposite said plunger, said chassis having parallel side walls formed with opposing grooves slidably receiving said peripheral flange and positioning said plunger to transversely engage on said drive roller means, abutment means mounted on said side walls and being clampingly engageable with said plunger to hold the plunger in driving engagement with said toothed roller means, and infusion cannula means communicatively connected to said discharge conduit.
1 Assignment
0 Petitions
Accused Products
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.
13 Citations
25 Claims
- 1. An infusion apparatus comprising housing means, a motor mounted in said housing means, a channel-shaped chassis rigidly connected to said housing means and being laterally offset therefrom, a syringe having a barrel with a radial peripheral flange, a smooth-profiled plunger slidably engaged in said barrel, a drive roller means journalled in said channel-shaped chassis with the axis of said roller means being transverse to the length of said channel, said drive roller means having teeth projecting from the circumference thereof and adapted to penetratingly engage said smooth-profiled plunger to drive said plunger in said barrel, means drivingly coupling said motor to said drive roller means, and an annular discharge conduit projecting from the end of the barrel opposite said plunger, said chassis having parallel side walls formed with opposing grooves slidably receiving said peripheral flange and positioning said plunger to transversely engage on said drive roller means, abutment means mounted on said side walls and being clampingly engageable with said plunger to hold the plunger in driving engagement with said toothed roller means, and infusion cannula means communicatively connected to said discharge conduit.
- 7. An infusion apparatus comprising housing means, a motor mounted in said housing means, a channel-shaped chassis rigidly connected to said housing means and being laterally offset therefrom, a tubed drive roller means journalled in said channel-shaped chassis with the axis of said roller means being transverse to the length of said channel, means drivingly coupling said motor to said drive motor, a syringe having a barrel with a radial peripheral flange, a plunger slidably engaged in said barrel, and an annular discharge conduit projecting from the end of the barrel opposite said plunger, said chassis having parallel side walls formed with opposing grooves slidably receiving said peripheral flange and positioning said plunger to transversely engage on said drive roller means, abutment means mounted on said side walls and being clampingly engageable with said plunger to hold the plunger in driving engagement with said toothed roller means, said abutment means comprising a clamping rod pivoted to one side wall and being lockingly engageable with the other side wall of the pressure pad means on the rod engageable with the plunger, and infusion cannula means communicatively connected to said discharge conduit.
- 12. A powered medicinal infuser apparatus for infusing medicinals over long periods in a continuous manner comprising a housing carrying a toothed roller means, means for holding a disposable plastic syringe having a smoothly profiled plunger in predetermined disposition to said housing with said plunger extending transversely to the axis of rotation of and in driving penetrating engagement with said toothed roller, a motor for driving said toothed roller means, and a transmission operably coupling said motor and toothed roller means.
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25. Medicant administration apparatus for feeding medicants over long periods in a continuous manner, comprising:
- a toothed roller;
an electric motor;
a transmission operably coupling said gear and motor;
a syringe of plastic material including a barrel and a plunger, said plunger having a smooth longitudinal profile; and
means releasably holding said syringe in a predetermined disposition relative to said assembly with said plunger extending transversely to the axis of rotation of said roller means and said roller means in penetrated driving engagement with said profile.
- a toothed roller;
Specification