Disposable infusion apparatus and peristaltic pump for use therewith

• US 5,165,874 A
• Filed: 01/02/1992
• Issued: 11/24/1992
• Est. Priority Date: 05/04/1990
• Status: Expired due to Term

• Current Assignee: Kimberly-Clark Worldwide Incorporated (Kimberly-Clark Corporation)
• Original Assignee: Block Medical, Inc. (Kimberly-Clark Corporation)
• Inventors: McWilliams, Mark, Sancoff, Gregory E., Cordner, Edward T. Jr.
• Primary Examiner(s): Bertsch, Richard A.
• Assistant Examiner(s): KOCHAROV, MICHAEL
• Application Number:
  US07/816,852
• Time in Patent Office: 327 Days
• Field of Search: 417/474, 417/475, 417/360, 128/DIG. 12, 604/153
• US Class Current: 417/474
• CPC Class Codes: A61M 39/281 Automatic tube cut-off devices, e.g. squeezing tube on detection of air
• 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: Y10S 128/12 Pressure infusion

Abstract

A disposable infusion apparatus includes proximal, distal and intermediate segments of IV tubing connected via couplings. The intermediate segment has a length sufficient for operative engagement with a pumping member of a peristaltic pump throughout a pumping stroke thereof. The intermediate segment further has a maximum Durometer of seventy-five on the Shore A scale. The pumping member includes a plurality of fingers mounted in side-by-side substantially parallel relationship for individual reciprocation. Motor driven cams individually reciprocate respective ones of the fingers in a predetermined timed sequence so that when the linearly disposed intermediate segment is squeezed by the fingers, intravenous fluid in the tubing will be pumped therethrough. The disposable apparatus further includes a door connected to opposite ends of the intermediate segment and which is releaseably loadable in a case to place the intermediate segment into operative engagement with the pumping member.

Claims

1. An infusion apparatus comprising in combination:

a portable hand held peristaltic pump mounted in a case, the case having an open receptacle within the case and an opening extending from the receptacle into the case, and the pump having a plurality of reciprocable pumping fingers disposed adjacent and extending to said opening in said case;

a unitary door and support member for direct support of an intermediate segment of IV tubing and having detachable hook shaped hinge means on one end thereof for engaging shoulder means in one end of said receptacle and releasable V-shaped latch means on the other end thereof for engaging shoulder means in the other end of said receptacle, said unitary door and support member being detachably mounted in a substantially fully recessed positioned within said receptacle and covering said opening;

an intermediate segment of IV tubing having a maximum Durometer of seventy-five on the Shore A scale mounted directly on said door for positioning over said opening for operative engagement with said pumping fingers of the peristaltic pump, the intermediate segment having a length sufficient for operative engagement with said pumping fingers of the peristaltic pump throughout a pumping stroke thereof;

a proximal segment of IV tubing connected to a first end of the intermediate segment of IV tubing; and

a distal segment of IV tubing connected to a second end of the intermediate segment of IV tubing.

2. A disposable infusion apparatus according to claim 1 wherein the intermediate segment of IV tubing is made of a material selected from the group consisting of VINYL and silicone.

3. A disposable infusion apparatus according to claim 1 wherein the intermediate segment of IV tubing has a minimum Durometer of thirty-five on the Shore A scale.

4. A disposable infusion apparatus according to claim 1 wherein the proximal segment of IV tubing is made of polyvinyl chloride.

5. A disposable infusion apparatus according to claim 1 wherein the distal segment of IV tubing is made of polyvinyl chloride.

6. A disposable infusion apparatus according to claim 1 wherein the hinge means includes a hook-shaped member.

7. A disposable infusion apparatus according to claim 1 wherein said peristaltic pump comprises:

means for mounting said plurality of fingers in side-by-side substantially parallel relationship for individual reciprocation;

cam means for individually reciprocating respective ones of the fingers in a predetermined time sequences so that when a linearly disposed segment of IV tubing is squeezed by the fingers intravenous fluid in the tubing will be pumped therethrough; and

motor means for driving the cam means.

8. A disposable infusion apparatus according to claim 7 further comprising a flexible boot surrounding the fingers and forming an interface between the fingers and the segment of IV tubing.

9. A disposable infusion apparatus according to claim 8 wherein each finger has a ridge projecting therefrom for engaging the segment of IV tubing and ensuring the complete squeezing off thereof.

10. A disposable infusion apparatus according to claim 9 wherein the cam means includes a splined shaft and a plurality of identical cam wheels, each cam wheel having a splined mounting hole therethrough offset from a center of the wheel, and the wheels being mounted on the splined shaft in progressive offset alignment for individually engaging and reciprocating respective ones of the fingers in the predetermined timed sequence.

11. A disposable infusion apparatus comprising in combination:

a portable hand held peristaltic pump mounted in a portable case, the case having an elongated open receptacle in one side thereof and an opening extending from the receptacle into the case, and the pump having a plurality of reciprocable pumping fingers disposed in said case adjacent and extendable through said opening in said case into said elongated receptacle;

an elongated unitary door and support member for direct support of an intermediate segment of IV tubing and being detachably mounted in a substantially fully recessed position within said receptacle and having a planar backing wall covered by a compressible resilient pad for positioning over said opening, a hook-shaped hinge member on one end of said door for engaging a shoulder in one end of said receptacle, a V-shaped releasable latch clasp on the other end of said door for releasably engaging a latching shoulder in the other end of said receptacle;

an intermediate segment of IV tubing having a minimum Durometer of thirty-five and a maximum Durometer of seventy-five on the Shore A scale mounted on said door over said planar backing surface for positioning over said opening when said elongated unitary door and support member is mounted within said receptacle, and having a length sufficient for operative engagement with the pumping fingers of the peristaltic pump throughout a pumping stroke thereof and being squeezed between said resilient pad on said backing surface and said pumping fingers;

an elongated proximal segment of IV tubing;

means for connecting an end of the proximal segment of IV tubing to a first end of the intermediate segment of IV tubing;

an elongated distal segment of IV tubing; and

means for connecting an end of the proximal segment of IV tubing to a second end of the intermediate segment of IV tubing.

12. A disposable infusion apparatus according to claim 11 wherein the intermediate segment of IV tubing is made of a material selected from the group consisting of VINYL and silicone.

13. A disposable infusion apparatus according to claim 12 wherein the proximal segment and the distal segment of IV tubing is made of polyvinyl chloride.

14. A disposable infusion apparatus according to claim 11 wherein the intermediate segment of IV tubing is made of silicone rubber.

15. A disposable infusion apparatus for use with a peristaltic pump, comprising:

a proximal segment of IV tubing;

a distal segment of IV tubing;

an intermediate segment of IV tubing having a maximum Durometer of seventy-five on the Shore A scale, the intermediate segment having a length sufficient for operative engagement with a pumping member of a peristaltic pump throughout a pumping stroke thereof;

a first coupling connecting a first end of the proximal segment of IV tubing to a first end of the intermediate segment of IV tubing;

a second coupling connecting a first end of the distal segment of IV tubing to a second end of the intermediate segment of IV tubing;

means for releasably mounting the intermediate segment adjacent the pumping member comprising a door secured to the first and second ends of the intermediate segment of IV tubing, and releasably engageable with a portion of a case defining a receptacle for positioning the intermediate segment of IV tubing in engagement with the pumping member of the peristaltic pump when it is mounted in the case adjacent the receptacle;

hinge means on a first end of said door for engaging the portion of the case defining the receptacle at a first end thereof for permitting a second end of the door means to swing toward and away from the case; and

tube squeezer means connected to the door for normally squeezing the intermediate segment of IV tubing shut and actuable upon engagement with the case to open the intermediate segment of IV tubing.

16. A disposable infusion apparatus according to claim 15 wherein said peristaltic pump comprises:

means for mounting said plurality of fingers in side-by-side substantially parallel relationship for individual reciprocation;

cam means for individually reciprocating respective ones of the fingers in a predetermined timed sequence so that when a linearly disposed segment of IV tubing is squeezed by the finger, intravenous fluid in the tubing will be pumped therethrough; and

motor means for driving the cam means.

17. A disposable infusion apparatus according to claim 16 further comprising a flexible boot surrounding the fingers and forming an interface between the fingers and the segment of IV tubing.

18. A disposable infusion apparatus according to claim 17 wherein each finger has a ridge projecting therefrom for engaging the segment of IV tubing and ensuring the complete squeezing off thereof.

19. A disposable infusion apparatus according to claim 18 wherein the cam means includes a splined shaft and a plurality of identical cam wheels, each cam wheel having a splined mounting hole therethrough offset from a center of the wheel, and the wheels being mounted on the splined shaft in progressive offset alignment for individually engaging and reciprocating respective ones of the fingers in the predetermined timed sequence.