A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
128/91
A61M 5/14 (2006.01)
Patent
CA 1058997
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. The tube pinchers are alter- nately pivoted to a non-clamping, tube-open position by a spring biased, intermittent motion, reciprocating slide bar under the con- trol of a reversible, rotating cam, the cam being driven by a syringe drive motor which is also used to drive the syringe through fill and pump strokes. A sensor may be provided to determine whether the syringe pump performs a fill stroke or a pump stroke. Control of the intake I.V. tube and the output I.V. tube is aided by a pincher spring secured at one end to the intake tube pincher and at the other end to the output tube pincher, the pincher spring extending there between and biasing the pinchers toward the clamp-off position. The tube pinchers, under control of the rotary cam, are adapted for snap action positioning, so that only one tube is open and only one tube is closed at any time.
311487
LandOfFree
Syringe pump valving 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 control system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Syringe pump valving control system will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-446071