Peristaltic pump tube holder with pump tube shield and cover

• US 5,746,708 A
• Filed: 12/22/1993
• Issued: 05/05/1998
• Est. Priority Date: 12/22/1993
• Status: Expired due to Fees

• Current Assignee: Baxter International Inc.
• Original Assignee: Baxter International Inc.
• Inventors: Patno, Timothy J., West, Richard L., Giesler, Richard C., Miles, Myra P., Lovelace, Susan L.
• Primary Examiner(s): Weiss, John G.
• Assistant Examiner(s): O YONG, KI
• Application Number:
  US08/172,135
• Time in Patent Office: 1,595 Days
• Field of Search: 604/4, 604/322, 604/325, 604/326, 604/403, 604/408, 604/409, 604/410, 604/5, 604/6, 494/12, 494/42, 494/45, 494/60, 494/62, 494/64
• US Class Current: 604/6.11
• 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 1/362227 the interface providing means for actuating on functional elements of the cassette, e.g. plungers
• 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 1/362266 Means for adding solutions or substances to the blood
• 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 includes a body that supports a flexible tubing loop in an erect, outwardly bowed position extending from the body for engagement with a peristaltic pump rotor. The holder also includes a receptacle carrying the body. The receptacle includes a wall forming a chamber that covers the flexible tubing loop and at least partially shields it from contact. The chamber further serves, during engagement between the tubing loop and a peristaltic pump rotor, as a cover for the peristaltic pump rotor.

Claims

1. An organizer tray assembly constructed and arranged for removable mounting on a peristaltic pump rotor assembly, which carries a peristaltic pump rotor, the organizer tray assembly comprising

a flexible tubing loop, and

a tray body comprising side panels, which define an open interior area, a region of the tray body including a pump tube support receiving the flexible tubing loop within the open interior area for engagement with the peristaltic pump rotor, the tray body further comprising an interior wall defining a chamber within the open interior area covering the flexible tubing loop to thereby shield the flexible tubing loop within the open interior area, another region of the tray body having an opening underlying the chamber to receive the peristaltic pump rotor into the chamber during removable mounting of the organizer tray assembly on the peristaltic pump rotor assembly, the chamber further serving, during engagement between the flexible tubing loop and the peristaltic pump rotor, as a cover for the peristaltic pump rotor.

2. A tray assembly according to claim 1

and further comprising tubing supported within the open interior area to form a liquid convey circuit communicating with the flexible tubing loop.

3. A tray assembly according to claim 2

wherein the tubing includes an integrally attached container, and

wherein the tray body supports the container within the open interior area.

4. A tray assembly according to claim 2

wherein the side panels include openings to accommodate passage of one portion of the tubing outside the open interior area of the tray body while another portion of the tubing communicates with the flexible tubing loop within the open interior area of the tray body.

5. An organizer tray assembly according to claim 2

and further comprising a fluid processing cassette including at least one liquid passage communicating with the flexible tubing loop, and

wherein the pump tube support receives the fluid processing cassette.

6. A tray assembly according to claim 2

wherein the tubing includes at least one in-line element that, in use, is oriented to accommodate gravity flow through the in-line element, and

wherein the tray body supports the in-line element within the open interior area and includes a bracket for holding the in-line element to accommodate gravity flow through the in-line element.

7. A peristaltic pumping system comprising

a peristaltic pump rotor assembly including a peristaltic pump rotor,

an organizer tray assembly separate from the pump rotor assembly, which is constructed and arranged for removable mounting on the pump rotor assembly, the organizer tray comprising

a tray body comprising side panels, which define an open interior area,

a flexible tubing loop supported within the open interior area for engagement about the peristaltic pump rotor,

the tray body further comprising an interior wall defining a chamber within the open interior area covering the flexible tubing loop to thereby shield the flexible tubing loop within the open interior area, a region of the tray body having an opening underlying the chamber to receive the peristaltic pump rotor into the chamber during removable mounting of the organizer tray assembly on the peristaltic pump rotor assembly,

the chamber also comprising a cover for the peristaltic pump rotor.

8. A system according to claim 7

and further comprising tubing supported within the open interior area to form a liquid convey circuit communicating with the flexible tubing loop.

9. A system according to claim 8

wherein the tubing includes an integrally attached container, and

wherein the tray body supports the container within the open interior area, which container is removable from the tray body.

10. A system according to claim 9

wherein the side panels include openings to accommodate passage of one portion of the tubing outside the open interior area of the tray body while another portion of the tubing lays within the open interior area of the tray body.

11. A system according to claim 9

and further comprising a fluid processing cassette including at least one liquid passage communicating with the flexible tubing loop, and

wherein the tray body includes a support receiving the fluid processing cassette.

12. A system according to claim 9

wherein the tubing includes at least one in-line element that, in use, is oriented to accommodate gravity flow through the in-line element, and

wherein the tray body supports the in-line element within the open interior area and includes a bracket for holding the in-line element to accommodate gravity flow through the in-line element.

13. A blood processing system comprising

a separation element for separating blood from a source into a first component and a second component,

a peristaltic pump rotor assembly including a peristaltic pump rotor.

a fluid circuit comprising

at least one container,

tubing for conveying blood among the source, the separation element, and the container,

an in-line cassette comprising

a cassette body,

a flexible tubing loop extending from the cassette body for engagement with the peristaltic pump rotor,

at least one a liquid port on the cassette body attachable to the tubing of the fluid circuit, and

at least one liquid passage formed within the cassette body in communication with the liquid port and the flexible tubing loop, and

a organizer tray assembly constructed and arranged for removable mounting on a peristaltic pump rotor assembly, the organizer tray assembly comprising a tray body including side panels forming an open interior area for supporting the separation element and the fluid circuit, an interior wall defining a chamber within the open interior area covering the flexible tubing loop and at least partially shielding the flexible tubing loop, and a region of the tray body having an opening underlying the chamber to receive the peristaltic pump rotor into the chamber during removable mounting of the organizer tray assembly on the peristaltic pump rotor assembly the chamber further serving as a cover for the peristaltic pump rotor.

14. A system according to claim 13

wherein the tray includes a bottom panel, and

wherein the interior wall is part of the bottom panel.

15. A system according to claim 14

wherein the fluid circuit is stacked in bottom, middle, and top layers within the open interior area of the tray, with the cassette body and flexible tubing loop occupying the bottom layer on the bottom panel, the separation element and tubing of the fluid circuit occupying the middle layer above of the bottom layer, and the container occupying the top layer above the middle layer.

16. A system according to claim 13

wherein the order tray assembly includes a removable over wrap enclosing the open interior area of the tray body before use.

17. A system according to claim 13

wherein the separation element separates blood components in response to centrifugal force.