FINGER-TYPE PERISTALTIC PUMP COMPRISING A RIBBED ANVIL

• US 20130142670A1
• Filed: 11/20/2012
• Published: 06/06/2013
• Est. Priority Date: 11/13/2006
• Status: Active Grant

• Current Assignee: Eitan Medical Limited
• Original Assignee: Q Core Medical Ltd.
• Inventors: Rotem, Shachar, Goldor, Ori
• Granted Patent: US 10,113,543 B2
• Time in Patent Office: Days
• US Class Current: 417/53
• CPC Class Codes: A61M 5/14228 with linear peristaltic action, i.e. comprising at least three pressurising members or a helical member
• CPC Class Codes: F04B 43/082 the tubular flexible member being pressed against a wall by a number of elements, each having an alternating movement in a direction perpendicular to the axes of the tubular member and each having its own driving mechanism
• CPC Class Codes: F04B 43/12 having peristaltic action

Abstract

The present invention includes a finger-type peristaltic pump with a ribbed anvil. According to some embodiments, a finger type peristaltic pump may comprise a plurality of pressing fingers, an infusion tube and a passive interfacing mechanism. The passive interfacing mechanism may comprise a channel, groove or other suitable mount for placing and mounting an infusion tube such that the pressing fingers are positioned on one side of the tube and the ribbed anvil on the opposite side. The pressing fingers may be positioned to apply an approximately perpendicular force on the tube, pressing it against the ribbed anvil, thus causing a pumping action.

Claims

1. A finger-type peristaltic pump (DDS), comprising a plurality of pressing-fingers, infusion-tube, and a passive interfacing mechanism;

wherein said passive interfacing mechanism comprising (a) a means for accommodating said flexible infusion tube and mounting said tube in a location suitable for said pressing-fingers to apply an approximated perpendicular force on said tube to squeeze it;

(b) a ribbed anvil rigidly supporting said tube on opposite side to said pressing fingers when it is pressed by said finger;

said anvil comprising a plurality of ribs selected from one or more ribs of a group including (i) a plurality of ribs oriented to face said fingers'"'"' tip, (ii) a plurality of ribs located in between said fingers, or (iii) any combination thereof.

2. The finger-type peristaltic pump according to claim 1, wherein by changing the heights of one or more of said ribs it is possible to calibrate the squeezed volume of the infused fluid per pumping cycle;

said squeezed volume is defined by ribs of a nominal height, so as the ratio between squeezed volume per revolution and the speed of the pumping mechanism can be calibrated.

3. The finger-type peristaltic pump according to claim 1, wherein one or more of said ribs is of a different width as compared with others ribs (reference ribs), so as less pressing force is required by a given finger for shutting off said infusion-tube against narrower ribs, as compared with reference ribs of wider width, and vice versa, more force is required for pressing said tube by a given finger against wider ribs as compared with reference narrower ribs.

4. The finger-type peristaltic pump according to claim 1, wherein one or more of said ribs is of a different width as compared with others ribs (reference ribs), so as squeezed volume of the infused fluid per pumping cycle can be calibrated.

5. A method for obtaining a predetermined flow capacity, comprising steps of obtaining a DDS as defined in claim 1 or in any of its dependent claims for pumping an infusion fluid;

and adjusting the specifications of one or more of said ribs, especially altering its height, width and/or profile characteristics so as various tubes or tube types can be utilized by said DDS without a preliminary requirement of calibrating pumping characterizations.