PUMP FOR PARENTERAL INJECTIONS AND THE LIKE

• US 3,778,195 A
• Filed: 07/20/1972
• Issued: 12/11/1973
• Est. Priority Date: 07/20/1972
• Status: Expired due to Term

• Current Assignee: George Bamberg
• Original Assignee: George Bamberg
• Inventors: Bamberg, George
• Primary Examiner(s): Croyle, Carlton R.
• Assistant Examiner(s): Gluck, Richard E.
• Application Number:
  US05/273,500
• Time in Patent Office: 509 Days
• Field of Search: 417/474,475,478,479,412
• US Class Current: 417/474
• 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 43/0072 of tubular flexible members
• 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

Abstract

The pump for parenteral injections and the like operates by a peristaltic type action. the pump includes a shaft having a plurality of cams spaced therealong. The cams act on spring loaded members adjacent the cam which, in turn, sequentially squeeze a disposable, flexible tubing held by a support. An adjusting mechanism is also positioned adjacent the members so as to control the cross sectional area of the disposable, flexible tubing. The rate of flow is controlled by the adjusting mechanism.

Claims

1. A pump for parenteral injections and the like comprising:

A. a shaft having a plurality of cams spaced therealong, each cam having a cam lobe, said cam lobes sequentially offset from one another;

B. a plurality of aligned, pivotally mounted plate-like members, each member positioned for engagement with a cam lobe of a corresponding cam and having a spring attached thereto and positioned between said member and the corresponding cam;

C. flexible tubing support means for supporting a flexible tubing in position adjacent the members for squeezing thereby;

D. an adjustable bar abutting the members and adjustable to alter the cross sectional areas of a flexible tubing;

E. a housing surrounding the shaft, cam and adjustable bar, said housing having a door which includes a flexible tubing support means; and

F. motor means positioned adjacent the housing and in operable engagement with the shaft.

2. The pump of claim 1 wherein the plate-like members are pivotally mounted to the door by means of a pin extending through a series of shoulders which are spaced so as to accommodate said member therebetween.

3. A pump for parenteral injections and the like comprising:

A. a housing having a door;

B. a rotatable shaft positioned within the housing having a plurality of cams spaced therealong, each cam having a cam lobe, said cam lobes sequentially offset from one another;

C. a plurality of spaced shoulders exTending into the housing from the door;

D. a plurality of aligned, pivotally mounted spring loaded plate-like members, each member positioned for engagement with a cam lobe, said members pivotally mounted by a pin extending through the shoulders, adjacent shoulders accommodating a member therebetween;

E. a flexible tubing support formed of a channel secured to the door;

F. a flexible tubing positioned in the channel extending through the housing and adapted to be collapsed by contact with said plate-like members;

G. an adjusting bar abutting the plate-like members and adapted to alter the cross sectional area of the flexible tubing; and

H. a motor mounted adjacent the housing and in operable engagement with the shaft.

4. The flexible tubing of claim 3 being clam-shaped in cross section.