Powered infusion apparatus
First Claim
1. Apparatus comprising:
- a housing carrying a toothed roller, an electric motor, a transmission operably coupling said motor to drive said toothed roller, a further roller, a monitor operably coupled with said further roller to generate electrical signals representing rotation of such roller and attachment means; and
a syringe including a barrel and plunger;
said plunger being of a plastics material having a smooth untoothed longitudinal profile, and said attachment means releasably holding said syringe by said barrel in a predetermined disposition relative to said housing with said plunger extending transversely to the axes of rotation of said rollers, with said toothed roller in penetrated driving engagement with said plunger profile, and with said further roller in driven engagement with said plunger.
1 Assignment
0 Petitions
Accused Products
Abstract
Apparatus for powered infusion or sampling of a patient comprises: a housing (11) carrying a toothed roller (17), an electric motor (19), a transmission (20) operably coupling such roller and motor, and attachment means (14); and a syringe (12) including a barrel (13) and plunger (15), the plunger being of plastics material having a smooth untoothed longitudinal profile (16), and the attachment means holding the syringe by its barrel in a predetermined disposition relative to the housing with the plunger extending transversely relative to the toothed roller axis of rotation and such roller in penetrated driving engagement with said plunger profile; is provided with a further roller (23) carried by said housing and in transversely driven engagement with the syringe plunger; and a monitor (24) operably coupled with the further roller to generate electrical signals representing rotation of such roller and, in turn, plunger translation. The further roller can be toothed and in similar penetrated engagement with the plunger as the first toothed roller, and the two rollers can be mutually arranged coaxially across, serially along or in opposition about the plunger.
20 Citations
10 Claims
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1. Apparatus comprising:
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a housing carrying a toothed roller, an electric motor, a transmission operably coupling said motor to drive said toothed roller, a further roller, a monitor operably coupled with said further roller to generate electrical signals representing rotation of such roller and attachment means; and a syringe including a barrel and plunger; said plunger being of a plastics material having a smooth untoothed longitudinal profile, and said attachment means releasably holding said syringe by said barrel in a predetermined disposition relative to said housing with said plunger extending transversely to the axes of rotation of said rollers, with said toothed roller in penetrated driving engagement with said plunger profile, and with said further roller in driven engagement with said plunger. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification