ROLLER POSITIONING SYSTEM

• US 20150139836A1
• Filed: 01/23/2015
• Published: 05/21/2015
• Est. Priority Date: 02/22/2008
• Status: Active Grant

• Current Assignee: Medtronic Xomed Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Xomed Incorporated (Medtronic Plc)
• Inventors: Norman, Gerould W., Drager, Craig L., Koltz, Michael L.
• Granted Patent: US 10,443,592 B2
• Time in Patent Office: Days
• US Class Current: 417/477.8
• CPC Class Codes: A61M 5/14232 Roller pumps
• CPC Class Codes: F04B 2201/1208 Angular position of the shaft
• CPC Class Codes: F04B 43/0072 of tubular flexible members
• CPC Class Codes: F04B 43/0081 systems, control, safety measures
• CPC Class Codes: F04B 43/08 having tubular flexible members F04B43/12 takes precedence
• 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: Y10T 29/53526 Running-length work

Abstract

A fluid delivery system is provided for use with a peristaltic pump, which includes a roller-tube engagement zone and a rotor structure including an array of rollers. The fluid delivery system includes a console to removably receive the peristaltic pump in a mounted position, with the console including a roller positioning system.

Claims

1. A fluid delivery system for use with a peristaltic pump including a roller-tube engagement zone and a rotor structure including an array of rollers, the fluid delivery system comprising:

a console configured to removably receive the peristaltic pump in a mounted position, the console including a rotor positioning system that comprises;

a controller;

a motor releasably couplable, via a single shaft, to the rotor structure to cause rotation of the rollers in a circular path;

an identifier mounted directly on the single shaft, wherein the identifier is independent of, and separate from, the rotor structure; and

a sensor in electrical communication with the controller and aligned to detect the identifier, wherein the sensor is separate from, and independent of, the pump assembly,

wherein the controller is configured to cause rotation of the single shaft, prior to loading of tubing into the roller-tube engagement zone, to rotatably position the rotor structure until a first roller of the array of rollers is located in the uppermost position within the peristaltic pump as indicated by a detection of a position of the identifier by the sensor.

2. The system of claim 1, wherein the sensor comprises an optical sensor and wherein the identifier comprises an optically detectable mark.

3. The system of claim 1, wherein a portion of the single shaft is connected to the rotor structure, and

wherein the identifier comprises a disc defining a pattern of spaced apart slits, the disc mounted relative to the shaft to align a position of each slit with a respective one of the rollers, and

wherein the sensor is an optical sensor to optically detect the slits upon their passage by the optical sensor.

4. The system of claim 3, wherein the optical sensor includes a transmitter and a receiver, with the transmitter and receiver positioned on opposite sides of the disc to straddle the disc such that the transmitter and receiver are in alignment with each other, wherein optical sensor detects each slit upon passing between the transmitter and receiver.

5. The system of claim 3, wherein an end of the single shaft is directly connectable to the rotor structure.

6. The system of claim 3, wherein the slits have substantially the same spacing between adjacent slits as the spacing between adjacent rollers of the array of rollers.

7. The system of claim 6, wherein the slits are spaced 120 degrees apart from each other.

8. The system of claim 1, comprising:

a tube-positioning holder including;

a shell sized and shaped to slidably fit onto an exterior housing of the peristaltic pump, wherein the shell includes a pair of opposite side walls laterally spaced apart from each other with each opposite side wall configured to releasably engage a respective side of the exterior housing to releasably secure the shell relative to the exterior housing; and

a pair of guides protruding from an upper portion of the opposite side walls of the shell, wherein the pair of guides are laterally spaced apart by a distance substantially equal to a width of the exterior housing to cause the guides to be positioned laterally outward from an outer edge of the exterior housing, wherein each guide is configured to releasably mount an end of a first tube segment to cause the first tube segment to extend between the pair of guides and into a roller-tube engagement zone of the pump.

9. A fluid delivery system for use with a peristaltic pump including a roller-tube engagement zone and a rotor structure including an array of rollers, the fluid delivery system comprising:

a console configured to removably receive the peristaltic pump in a mounted position, the console including a rotor positioning system that comprises;

a controller;

a motor releasably couplable, via a single shaft, to the rotor structure of the pump to cause rotation of the rollers in a circular path;

an identifier mounted directly on the single shaft, wherein the identifier is independent of, and separate from, the rotor structure and wherein the identifier is spaced apart along a length of the shaft from the rotor structure; and

a sensor in electrical communication with the controller and aligned to detect the identifier, wherein the sensor is separate from, and independent of, the pump assembly,

wherein the controller is configured to cause rotation of the single shaft, prior to loading of tubing into the roller-tube engagement zone, to rotatably position the rotor structure until a first roller of the array of rollers is located in the uppermost position within the peristaltic pump as indicated by a detection of a position of the identifier by the sensor.

10. The system of claim 9, wherein the mounted position of the pump is external to the console.

11. The system of claim 9, wherein the sensor comprises an optical sensor and wherein the identifier comprises an optically detectable mark.

12. The system of claim 9, wherein a portion of the single shaft is connected to the rotor structure, and

wherein the identifier comprises a disc defining a pattern of spaced apart slits, the disc mounted relative to the shaft to align a position of each slit with a respective one of the rollers, and

wherein the sensor is an optical sensor to optically detect the slits upon their passage by the optical sensor, and

wherein the optical sensor includes a transmitter and a receiver, with the transmitter and receiver positioned on opposite sides of the disc to straddle the disc such that the transmitter and receiver are in alignment with each other, wherein optical sensor detects each slit upon passing between the transmitter and receiver.

13. The system of claim 12, wherein the slits have substantially the same spacing between adjacent slits as the spacing between adjacent rollers of the array of rollers.

14. A fluid delivery system for use with a peristaltic pump including a roller-tube engagement zone and a rotor structure including an array of rollers, the fluid delivery system comprising:

a console configured to removably receive the peristaltic pump in a mounted position external to the console, the console including a rotor positioning system that comprises;

a controller;

a motor releasably couplable, via a single shaft, to the rotor structure of the pump to cause rotation of the rollers in a circular path;

an identifier mounted directly on the single shaft, wherein the identifier is independent of, and separate from, the rotor structure of the pump; and

a sensor in electrical communication with the controller and aligned to detect the identifier, wherein the sensor is separate from, and independent of, the pump assembly,

wherein the controller is configured to cause rotation of the single shaft, prior to loading of tubing into the roller-tube engagement zone, to rotatably position the rotor structure until a first roller of the array of rollers is located in the uppermost position within the peristaltic pump as indicated by a detection of a position of the identifier by the sensor.

15. The system of claim 14, wherein the identifier is spaced apart along a length of the shaft from the rotor structure.

16. The system of claim 14 wherein the sensor comprises an optical sensor and wherein the identifier comprises an optically detectable mark.

17. The system of claim 14, wherein a portion of the single shaft is connected to the rotor structure, and

wherein the identifier comprises a disc defining a pattern of spaced apart slits, the disc mounted relative to the shaft to align a position of each slit with a respective one of the rollers, and

wherein the sensor is an optical sensor to optically detect the slits upon their passage by the optical sensor.

18. The system of claim 17, wherein the optical sensor includes a transmitter and a receiver, with the transmitter and receiver positioned on opposite sides of the disc to straddle the disc such that the transmitter and receiver are in alignment with each other, wherein optical sensor detects each slit upon passing between the transmitter and receiver.

19. The system of claim 17, wherein an end of the single shaft is directly connectable to the rotor structure.

20. The system of claim 17, wherein the slits have substantially the same spacing between adjacent slits as the spacing between adjacent rollers of the array of rollers.