A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
128/91, 340/137.
A61M 5/14 (2006.01)
Patent
CA 1058468
ABSTRACT OF THE DISCLOSURE This invention relates generally to improvements in an improved valve control system for syringe pumps. Prior art syringe pumps are often overly complex and unstable or inaccurate in their valving and motor control systems. The present invention overcomes these deficiencies by providing apparatus which repetitively and sequentially opens and closes a pair of intake and output I.V. tubes communicating with a syringe, the tubes alternating between opened and closed states, one tube always being open while the other is closed, by means of a pair of L-shaped pivotal tube pinchers, one pincher controlling each I.V. tube, each pincher being normally spring biased to the tube clamping shut-off state. The tube pinchers are alternately pivoted to a non-clamping, tube-open posi- tion by a spring biased, intermittent motion, reciprocating slider bar under the control of a reversible, rotating cam, the cam being driven by the same motor as that used to drive the piston of the syringe through its fill and pump strokes. A photoelectric sensor is responsive to the physical position of one of the tube pinchers and generates an electrical signal to control the direction of motor rotation and, hence, determines whether the syringe pump performs a fill stroke or a pump stroke.
311486
LandOfFree
Syringe pump valving amd motor direction control system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Syringe pump valving amd motor direction control system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Syringe pump valving amd motor direction control system will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-879086