Energy-saving anti-free flow portable pump for use with standard PVC IV tubing

Inactive Publication Date: 2005-09-29
SIGMA INT GENERAL MEDICAL APP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0013] It is a further object to provide an ambulatory pump that can deliver fluid to a patient at a relatively high volume flow rate, for example 125 ml/hour, for at le

Problems solved by technology

This leads to very high power consumption when using standard tubing.
Thus, a battery capable of powering the pump for 24 hours is very heavy and bulky.
In addition, fully collapsing the tubing deforms the tubing.
Less fluid is discharged from the tubing as the cross section becomes more elliptical, leading to negative flow rate errors.
However, there are several drawbacks in comparison to the LVP pump.
The reduced battery cannot provide the power required to completely collapse standard PVC tubing.
This specialized equipment increases the cost of using the pumps.
Even with special dedicated IV sets or silico

Method used

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  • Energy-saving anti-free flow portable pump for use with standard PVC IV tubing
  • Energy-saving anti-free flow portable pump for use with standard PVC IV tubing
  • Energy-saving anti-free flow portable pump for use with standard PVC IV tubing

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Embodiment Construction

[0042] It should be appreciated that, in the detailed description of the invention which follows, like reference numbers on different drawing views are intended to identify identical structural elements of the invention in the respective views.

[0043] A first embodiment of the present invention is shown in FIG. 1 and generally designated 10. Apparatus 10 is an infusion pump comprising pump base 20 with tubing base 31 fixed thereto. Tubing 21 is routed over tubing base 31 underneath occlusion platens 22 and 29, and pump platen 25. Occlusion platen 22 is fixed to platen support 55. Occlusion platen 29 is fixed to platen support 55. Pump platen 25 comprises stop platen 26, and is fixed to platen support 55. Motor 42 is fixed to pump base 20. Motor 42 drives camshaft 38. Camshaft 38 is supported by shaft supports 40 and 41. Cams 35, 36, and 39 are all fixedly mounted on camshaft 38. As camshaft 38 rotates when driven by motor 42, cams 35, 36, and 39 are rotated at the same rate. Cam 35 ...

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Abstract

The present invention comprises an apparatus for pumping fluid through tubing. The apparatus includes a tubing base having a tubing support surface and a stop platen. The stop platen and the tubing support surface each comprise respective ridges aligned with a direction of fluid flow through the apparatus. The respective ridges are operatively arranged to engage a wall of tubing along a longitudinal axis of the tubing. In some aspects, the respective ridges are arcuate in a plane orthogonal to the direction of flow. In some aspects, the respective ridges are centered with respect to a transverse axis of the tubing and have a respective width less than an outside diameter of the tubing.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This is a continuation-in-part patent application under 35 USC 120, which claims the benefit of U.S. patent application Ser. No. 10 / 117,515, filed Apr. 5, 2002, entitled, “ENERGY-SAVING ANTI-FREE FLOW PORTABLE PUMP FOR USE WITH STANDARD PVC IV TUBING” and incorporated by reference herein.FIELD OF THE INVENTION [0002] This invention relates to a pump for providing fluid for injection into a patient. More specifically it relates to a method and apparatus for an ambulatory infusion pump for pumping liquid through standard intravenous (IV) tubing. BACKGROUND OF THE INVENTION [0003] Infusion pumps for delivering fluid to a patient are well known in the art. Two general categories of infusion pumps known in the art are ambulatory pumps and large volume parenteral (LVP) pumps. These pumps deliver fluid to a patient through tubing at higher accuracies than gravity drip tubing delivery systems. [0004] LVP pumps are relatively large infusion pump...

Claims

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Application Information

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IPC IPC(8): F04B43/08
CPCF04B43/082
Inventor CORWIN, KENNETH J.HUNGERFORD, ROGER L.SHVETSOV, YURIYWOLLOWITZ, MICHAEL H.
Owner SIGMA INT GENERAL MEDICAL APP
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