Power syringe
First Claim
1. A power syringe comprising:
- (a) a reservoir having a plunger captured within;
(b) a base having a flat surface and wherein a distal end of said reservoir is pivotally attached;
(c) a first arm attached at one end to said plunger;
(d) a second arm attached to said base, wherein said first arm is attached to a portion of said second arm such that movement of said second arm results in translation of the plunger into the reservoir.
3 Assignments
0 Petitions
Accused Products
Abstract
A power syringe (10) for use in medical procedures, such as angiography, delivers air or fluid, such as contrast medium, to a patient at operator controlled rates and pressures. In one embodiment, mechanical advantage is created by first and second arms (22, 26) which are interconnected with each other, the base, and the plunger (20). The proximal end of the syringe contains a track (44) that the plunger follows in normal fashion in and out of the reservoir. The track is bevelled from proximal to distal end to create a path with variable resistance. A mechanical stop (42) is at the proximal end of the track to control the length of travel of plunger and secondary mechanical arm. Markings (18) on reservoir (12) indicate the volume of fluid or air in the reservoir. Mechanical arm length, tracking length, and distance to plunger stop will vary with size of syringe to generate appropriate flow and power.
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Citations
10 Claims
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1. A power syringe comprising:
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(a) a reservoir having a plunger captured within; (b) a base having a flat surface and wherein a distal end of said reservoir is pivotally attached; (c) a first arm attached at one end to said plunger; (d) a second arm attached to said base, wherein said first arm is attached to a portion of said second arm such that movement of said second arm results in translation of the plunger into the reservoir. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification