Peristaltic Pump

• US 20080095649A1
• Filed: 11/12/2003
• Published: 04/24/2008
• Est. Priority Date: 11/14/2002
• Status: Active Grant

• Current Assignee: Eitan Medical Limited
• Original Assignee: Q Core Medical Ltd.
• Inventors: Shabat, Roni, Ben-Shalom, Zvi, Goldor, Ori, Ozeri, Shaul
• Granted Patent: US 7,695,255 B2
• Time in Patent Office: Days
• 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: F04B 43/09 Pumps having electric drive

Abstract

A pump for generating fluid flow in an elastic tubular conduit. The pump comprises a plurality of electrically operated valves, each valve being positionable adjacent to the conduit. Each valve has a valve head configured to alternate from a first position in which the lumen of the conduit adjacent to the valve head is unobstructed and a second position in which the lumen of the conduit adjacent to the valve head is obstructed. The pump also comprises a driver configured to control the positions of the valve heads, so as to execute a predetermined temporo-spatial array of valve head positions.

Claims

1. A pump for generating fluid flow in an elastic tubular conduit having a lumen, comprising:

(a) four electrically operated valves, each valve being positionable adjacent to the conduit, each valve having a valve head, the valve head configured to alternate from a first position in which the lumen of the conduit adjacent to the valve head is unobstructed and a second position in which the lumen of the conduit adjacent to the valve head is obstructed; and

(b) a driver, comprising at least one electromagnet, configured to control the positions of the valve heads, so as to execute the temporo-spatial array of valve head positions of FIG. 4.

2. The pump according to claim 1, wherein the valve heads have a first dimension positionable perpendicular to the axis of the conduit and a second dimension positional parallel to the axis of the conduit, the second dimension of all of the valve heads being equal.

3. The pump according to claim 1, wherein the valve heads have a first dimension perpendicular to the axis of the conduit and a second dimension parallel to the axis of the conduit, and wherein the second dimensions are not all equal or the shape of the valve heads are not all the same.

4. The pump according to claim 1 having a base configured to maintain a segment of the conduit in a straight line or in an S shape.

5. The pump according to claim 1 wherein the tubular conduit is held in a sleeve.

6. The pump according to claim 1 wherein the tubular conduit is preloaded.

7. The pump according to claim 1 wherein one or more valve heads is oblique to the conduit.

8. The pump according to claim 1 further comprising a communications device for transmitting information to a remote receiver.

9. A pumping system comprising two or more pumps according to claim 1.

10. The pumping system according to claim 9 comprising two or more pumps in which at least two pumps are arranged in series.

11. The pumping system according to claim 9 comprising two or more pumps in which at least two pumps are arranged in parallel.

12. A driving mechanism for use in a pump according to claim 1 comprising:

(a) an X shaped metal lever pivotable around an axis;

(b) A first auxiliary lever pivotable about the axis;

(c) A second auxiliary lever pivotable about the axis;

(d) An intermittently activatable electromagnet generating, when activated, a magnetic field between a first metal core arm and a second metal core arm;

wherein the magnetic field causes rotation of an auxiliary lever about the axis when extremities of the lever arm are not between the first and second core arms so as to bring the extremities between the first and second core arms.

13. A pump according claim 1 comprising a mechanism comprising:

(a) an X shaped metal lever pivotable around an axis;

(b) A first auxiliary lever pivotable about the axis;

(c) A second auxiliary lever pivotable about the axis;

(d) An intermittently activatable electromagnet generating, when activated, a magnetic field between a first metal core arm and a second metal core arm;

wherein the magnetic field causes rotation of an auxiliary lever about the axis when extremities of the lever arm are not between the first and second core arms so as to bring the extremities between the first and second core arms.

14. A pump according claim 1, comprising:

(a) a lever bar pivotable around an axle, having a first end and a second end;

(b) a first valve head attached to the first end of the lever bar;

(c) a second valve head attached to the second end of the lever bar; and

(d) an electromagnet rotating the lever arm between a first configuration in which the first valve head is in an up position and the second valve head is in a down position, and a second configuration in which the first valve head is in a down position and the second valve head is in an up position.

15. A pump according to claim 1 operated by batteries.

16. A pump according to claim 1 comprising a control panel that is detachable from the rest of the pump.

17. The pump according to claim 16 wherein communication between the control panel and the rest of the pump is via an electric cable.

18. The pump according to claim 16 wherein communication between the control panel and the rest of the pump via a wireless connection.

19. The pump according to claim 1 further comprising a transceiver communicating with a remote station.

20. The pump according to claim 1 further comprising an anti-free flow device.