Tubing holding device for roller pumps

• US 8,047,819 B2
• Filed: 09/22/2006
• Issued: 11/01/2011
• Est. Priority Date: 09/23/2005
• Status: Expired due to Fees

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Lawrence, Robert J., Carpenter, Walt L.
• Primary Examiner(s): Kramer; Devon C
• Assistant Examiner(s): BERTHEAUD, PETER JOHN
• Application Number:
  US11/526,150
• Publication Number:
  US 20080213113A1
• Time in Patent Office: 1,866 Days
• Field of Search: 417/476, 417/477.1, 417/477.2, 248/68.1
• US Class Current: 417/477.1
• CPC Class Codes: A61M 60/113 in other functional devices, e.g. dialysers or heart-lung machines
• CPC Class Codes: A61M 60/279 Peristaltic pumps, e.g. roller pumps
• CPC Class Codes: A61M 60/35 for specific surgeries, e.g. for Fontan procedure
• CPC Class Codes: A61M 60/462 Electromagnetic force
• CPC Class Codes: A61M 60/835 of positive displacement blood pumps
• 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
• CPC Class Codes: F16L 3/1033 with two members engaging the pipe, cable or tubing, the two members being joined only on one side of the pipe
• CPC Class Codes: F16L 3/1041 and being adapted to accommodate pipes of various diameters

Abstract

A tubing holding device for a roller pump is disclosed. The tubing holding device is removable from the roller pump, slidably moveable and able to be opened to allow for easy exchange of tubing in roller pumps. The tubing holding device comprises a clamping mechanism that securely holds tubing in place. Tubing of various sizes may be used within a roller pump by selecting the appropriately sized tubing holding device, or by using a tubing holding device, such as one embodiment disclosed, which may be adjustable for different sizes of tubing. Roller pumps including the tubing holding devices, and methods of loading such roller pumps are also disclosed.

Claims

1. A tubing holding device used in a pump comprising a rigid walled cavity for slidably receiving the tubing holding device, the tubing holding device comprising:

a first arm defining a first portion of a lumen for capturing tubing; and

a second arm defining a second portion of the lumen for capturing tubing,

wherein at least one of the first and second arms is moveable relative to the other arm to allow the lumen to be opened to load tubing into or remove tubing from the lumen while the tubing holding device is partially slidably received within the rigid wailed cavity, and closed to fixedly capture tubing in the lumen, and further wherein the first and second arms are sized and shaped and have an outer surface to allow the tubing holding device to be slid into the rigid walled cavity of the pump, with the first and second arms closed, causing the tubing holding device to be maintained in a closed position when fully within the rigid walled cavity of the pump, the tubing holding device also comprising a tab that is sized and shaped to slidably move along the rigid walled cavity in a slot and to engage a stop of the rigid walled cavity to prevent removal of the tubing holding device, thereby maintaining partial engagement in the rigid walled cavity.

2. The tubing holding device of claim 1, wherein the lumen comprises an outer surface, and the lumen outer surface of the first arm is greater than the lumen outer surface of the second arm.

3. The tubing holding device of claim 1, further comprising a means for pivoting at least one of the first and second arms relative to the other arm.

4. The tubing holding device of claim 1, wherein the lumen may be adjusted in size.

5. The tubing holding device of claim 1, further comprising at least one shim, wherein the at least one shim is positioned in the lumen to permit the lumen to fixedly capture tubing of a different size.

6. The tubing holding device of claim 1, wherein the first and second arms define portions of a plurality of lumens.

7. A tubing holding device used in a pump comprising a rigid walled cavity for slidably receiving the tubing holding device, the tubing holding device comprising:

a first arm defining a first portion of a lumen for capturing tubing; and

a second arm defining a second portion of the lumen for capturing tubing,

wherein at least one of the first and second arms is moveable relative to the other atm to allow the lumen to be opened to load tubing into or remove tubing from the lumen and closed to fixedly capture tubing in the lumen, and wherein the lumen comprises an outer surface, and further wherein the tubing holding device includes an end surface for engagement with a bottom surface of the rigid walled cavity of a pump, and the first arm is pivotally connected with the second arm at a location spaced from the end surface so that a portion of the tubing holding device can be partially slidably received within the rigid walled cavity while also permitting pivotal movement of the first arm relative to the second arm so that tubing can be loaded into the tubing holding device.

8. The tubing holding device of claim 7, wherein the first and second arms are sized and shaped and have an outer surface to allow the tubing holding device to be slid into the rigid walled cavity of the pump causing the tubing holding device to be maintained in a closed position when in the rigid walled cavity of the pump.

9. The tubing holding device of claim 7, further comprising a means for pivoting at least one of the first and second arms relative to the other arm.

10. The tubing holding device of claim 7, wherein the lumen may be adjusted in size.

11. The tubing holding device of claim 7, further comprising at least one shim, wherein the at least one shim is positioned in the lumen to permit the lumen to fixedly capture tubing of a different size.

12. The tubing holding device of claim 7, wherein the first and second arms define portions of a plurality of lumens.

16. The roller pump of claim 11, further comprising a front plate that is removably attached to the pump stator, wherein the at least one rigid walled cavity further comprises at least a portion of the front plate.

13. A roller pump for pumping fluids through a tubing, the roller pump comprising:

a pump stator comprising a hollow chamber having a surface, and at least a portion of at least one rigid walled cavity;

a pump rotor comprising at least one roller and having a longitudinal axis, wherein the pump rotor is arranged in the hollow chamber of the pump stator for rotation about its longitudinal axis, and when tubing is positioned in the roller pump, a first portion of the tubing is positioned against the surface of the pump stator, and during rotational movement of the pump rotor, the first portion of tubing is compressed against the surface of the pump stator by the at least one roller of the pump stator as the at least one roller travel along the first portion of tubing; and

at least one tubing holding device that comprises a first arm and a second arm, wherein the first and second arms each define a portion of a lumen that is used to fixedly capture a second portion of tubing relative to the pump stator, wherein at least one of the first and second arms is moveable relative to the other arm to allow the lumen to be opened to load the second portion of tubing into or remove the second portion of tubing from the lumen while the tubing holding device is partially slidably received within the rigid walled cavity, or closed to fixedly capture the second portion of tubing in the lumen relative to the pump stator, and further wherein the tubing holding device is sized and shaped similar to the size and shape of the rigid walled cavity so as to be slidably disposed in the at least one rigid walled cavity and slidable between a loading position, in which the tubing holding device is partially slidably received within the rigid walled cavity with movement permitted between the first and second arms, and a fully engaged position, in which the first and second arms of the tubing holding device are maintained in a closed position.

14. The roller pump of claim 13, wherein the at least one tubing holding device is disengageable from the roller pump and may be exchanged with a different tubing holding device.

15. A method of loading a tubing in a roller pump, wherein the roller pump comprises a pump stator that comprises at least a portion of at least one rigid walled cavity slidably receiving a tubing holding device, a pump rotor;

wherein said tubing holding device comprises a first arm and a second arm, wherein the first and second arms each define a portion of a lumen, at least one of the first and second arms is moveable relative to the other arm, the tubing holding device disposed in the at least one rigid walled cavity and being slidable along plural surfaces of the rigid walled cavity between a loading position and a fully engaged position, the method comprising the steps of;

positioning the at least one tubing holding device in a loading position with the tubing holding device partially engaged along plural surfaces the rigid walled cavity;

moving the first arm of the at least one tubing holding device relative to the second arm to open up the lumen;

placing a portion of the tubing in the open lumen of the at least one tubing holding device;

moving the first arm of the at least one tubing holding device relative to the second arm to close the lumen and fixedly capture the portion of tubing; and

sliding the at least one tubing holding device further along the plural surfaces of the rigid walled cavity so as to maintain the first and second arms together with the closed lumen and thus fixedly position the portion of tubing relative to the pump stator.

17. The method of claim 15, wherein the lumen comprises an outer surface, and the lumen outer surface of the second arm is greater than the lumen outer surface of the first arm, and the portion of tubing is placed in the portion of the lumen that is adjacent to the lumen outer surface of the second arm.