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Infusion pump apparatus having convex platen surface

A pressing plate and equipment technology, which is applied in the field of infusion pump equipment with a convex pressing plate surface, can solve the problems that cannot be independently controlled, cannot realize independent actuation compensation fingers, etc.

Active Publication Date: 2021-05-14
ZEVEX
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in curved peristaltic pumps, independently actuated compensating fingers are not possible because the pumping fingers are actuated by a single cam in a radial fashion and thus cannot be independently controlled

Method used

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  • Infusion pump apparatus having convex platen surface
  • Infusion pump apparatus having convex platen surface
  • Infusion pump apparatus having convex platen surface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] figure 1 Infusion pump 10 and a portion of a disposable administration set 30 designed to be removably received by infusion pump 10 are shown. Such as figure 2 As can be seen, the infusion pump 10 includes a pumping mechanism 12 having an electric motor 14 coupled to a drive gear 15 meshing with a driven gear 16 fixed to a camshaft 18 . A plurality of eccentric cams 20 are mounted on the camshaft 18 for rotation therewith, wherein each cam 20 is arranged to engage a respective pumping finger 22 . It will be appreciated that motor 14 is operable to rotate camshaft 18 and cam 20 about the axis of camshaft 18 such that each pumping finger 22 moves radially away from and toward camshaft 18 in a reciprocating manner. The eccentric cam 20 may be configured such that movement of the pumping finger 22 provides a cyclic peristaltic pumping action along the longitudinal direction of the pumping mechanism 12 (ie in a direction parallel to the axis of the camshaft 18 ). exist ...

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PUM

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Abstract

A peristaltic infusion pump system has a convex platen surface opposite a linear peristaltic pumping mechanism. The convex platen surface may be part of a cassette of an administration set removably loadable in an infusion pump, or the convex platen surface may be a feature of the pump itself. Pumping efficiency is improved without giving up the ability to have independently controlled compensating fingers. The convex platen surface may have a trapezoidal profile, a curved profile, or a hybrid profile having upstream and downstream inclined portions connected by an intermediate curved portion.

Description

technical field [0001] The present invention relates to a peristaltic infusion pump and a cassette removably loadable in the infusion pump. Background technique [0002] Programmable infusion pumps are used for the controlled delivery of liquid food for enteral feeding and liquid medication for various purposes such as pain management. In a common arrangement, the infusion pump receives a disposable administration set comprising flexible tubing through which the infusion liquid is pumped. A segment of the dosing set tubing may be elastically deformable and designed to be engaged by the peristaltic pumping mechanism of the infusion pump. The pumping mechanism may comprise a series of pumping fingers arranged along the deformable tube section. The pumping fingers can be driven cyclically to act on the pipe section in a peristaltic manner to force the liquid to flow through the pipe in the pumping direction. A platen surface is provided on the side of the tubing section oppo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M5/142A61M5/00
CPCA61M5/142A61M5/14228A61M5/002A61M2205/12F04B43/082F04B43/12A61M5/1413
Inventor 阿祖尔·阿萨帕吉克肯特·F·贝克J.·瑞恩·斯坦菲尔德
Owner ZEVEX