Peristaltic pump tube cassette with angle pump tube connectors

• US 5,427,509 A
• Filed: 12/22/1993
• Issued: 06/27/1995
• Est. Priority Date: 12/22/1993
• Status: Expired due to Term

• Current Assignee: Fenwal Incorporated (Fresenius SE & Co. KGaA)
• Original Assignee: Baxter International Inc.
• Inventors: Dennehey, T. Michael, Brown, Richard I., Williamson, Warren P., Chapman, Arthur S.
• Primary Examiner(s): Bertsch, Richard A.
• Assistant Examiner(s): KORYTNYK, PETER G
• Application Number:
  US08/173,518
• Time in Patent Office: 552 Days
• Field of Search: 47/474, 47/475, 47/476, 47/477 R, 47/477 A, 604/151, 604/152, 604/153, 604/154, 604/131, 141/100, 141/104, 141/392
• US Class Current: 417/477.2
• CPC Class Codes: A61M 1/30 Single needle dialysis ; Reciprocating systems, alternately withdrawing blood from and returning it to the patient, e.g. single-lumen-needle dialysis or single needle systems for hemofiltration or pheresis
• CPC Class Codes: A61M 1/303 having a reservoir for treated blood to be returned
• CPC Class Codes: A61M 1/36222 Details related to the interface between cassette and machine
• CPC Class Codes: A61M 1/36224 with sensing means or components thereof
• CPC Class Codes: A61M 1/36225 with blood pumping means or components thereof
• CPC Class Codes: A61M 1/362261 at least one cassette surface or portion thereof being flexible, e.g. the cassette having a rigid base portion with preformed channels and being covered with a foil
• CPC Class Codes: A61M 1/362265 Details of valves
• CPC Class Codes: A61M 1/3693 using separation based on different densities of components, e.g. centrifuging
• CPC Class Codes: A61M 1/3696 with means for adding or withdrawing liquid substances during the centrifugation, e.g. continuous centrifugation
• CPC Class Codes: A61M 2205/12 with interchangeable cassettes forming partially or totally the fluid circuit
• CPC Class Codes: F02B 2075/025 two
• CPC Class Codes: F04B 43/1253 by using two or more rollers as squeezing elements, the rollers moving on an arc of a circle during squeezing

Abstract

A peristaltic pump tube holder has a body having first and second pump tube connectors extending outside of it. The pump tube connectors extend at an acute angle relative to a surface of the body to receive a flexible tubing loop and orient the tubing loop for engagement with an external peristaltic pump rotor.

Claims

1. A peristaltic pump tube holder comprising

a body defining a surface, and

first and second pump tube connectors extending outside the body at an acute angle relative to the surface to receive a flexible tubing loop and orient the tubing loop for engagement with an external peristaltic pump rotor.

2. A holder according to claim 1 and further including at least one path within the body that communicates with the pump tube connectors.

3. A holder according to claim 2 and further including

at least one area within the body operative in response to the application of external force for controlling liquid flow communication within the liquid carrying path.

4. A holder according to claim 1 and further including

at least one means within the body for sensing fluid pressure within the pump tube holder body.

5. A pump tube holder for a peristaltic pump comprising

a body defining a surface,

first and second pump tube connectors extending outside the body at an acute angle relative to the surface, and

a flexible tubing loop carried by the first and second pump tube connectors in an erect, outwardly bowed position for placement into engagement with the peristaltic pump and for removal out of engagement with the peristaltic pump by moving the body, respectively, toward and away from the peristaltic pump.

6. A holder according to claim 5 and further including at least one path within the body that communicates with the pump tube connectors.

7. A holder according to claim 6 and further including

at least one area within the body operative in response to the application of external force for controlling liquid flow communication within the liquid carrying path.

8. A holder according to claim 6 and further including

at least one means within the body for sensing fluid pressure within the pump tube holder body.