Finger-type peristaltic pump

• US 9,404,490 B2
• Filed: 02/16/2014
• Issued: 08/02/2016
• Est. Priority Date: 11/24/2004
• Status: Active Grant

• Current Assignee: Eitan Medical Limited
• Original Assignee: Q Core Medical Ltd.
• Inventors: Goldor, Ori, Rotem, Shachar
• Primary Examiner(s): Hamo, Patrick
• Application Number:
  US14/181,673
• Publication Number:
  US 20140369872A1
• Time in Patent Office: 898 Days
• US Class Current: 1/1
• 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 43/0072 of tubular flexible members
• 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 43/12 having peristaltic action

Abstract

The invention provides a finger-type peristaltic pump (2) having a body (4) and a housing (6). The body contains two or more finger-type valves (16) and a processor (22) configured to operate the valves according to a predetermined temporo-spatial pattern. The housing has a passageway (18) configured to receive a conduit. The housing has a first position in which a conduit in the passageway is positioned adjacent to the valve fingers, and a second position in which a conduit in the passageway is not adjacent to the valve fingers. The invention also provides a housing for use in the pump of the invention.

Claims

1. An apparatus comprising:

a conduit housing including a tube segment;

one or more pump interlock elements adapted to facilitate detachable engagement of the housing with a peristaltic pump;

an anti-free-flow mechanism having a first default state which obstructs flow through the tube segment when the housing is detached from the pump and a second mechanically latched override state which allows fluid to flow through the tube segment when the housing is detached; and

a third engaged default state wherein said anti-free flow mechanism is brought into the third state when the housing is attached to the pump, from (a) the first default state if the anti-free-flow mechanism is in the first default state when the housing is detached from the pump and from (b) the second mechanically latched override state if the anti-free-flow mechanism is in the second mechanically latched override state when the housing is detached from the pump.

2. The apparatus according to claim 1, further comprising an anti-free-flow override mechanism engageable when the housing is detached from the pump, said override mechanism being configured to, when engaged, mechanically latch said anti-free-flow mechanism in the second mechanically latched override state allowing fluid to flow through the tube segment.

3. The apparatus of claim 2, wherein said override mechanism is configured to automatically disengage when the housing is attached to the pump.

4. The apparatus of claim 1, wherein said anti-free-flow mechanism is a spring biased occlusion plate.

5. The apparatus of claim 1, wherein said anti-free-flow mechanism obstructs flow in one direction.

6. The apparatus of claim 1, wherein said anti-free-flow mechanism obstructs flow in two directions.

7. The apparatus of claim 1, wherein said tube segment is a pipe segment.

8. The apparatus of claim 7, wherein said pipe segment includes silicone.

9. A system for pumping fluid comprising:

a peristaltic pump; and

a conduit housing including;

(a) a flexible tube segment,

(b) one or more pump interlock elements adapted to facilitate detachable engagement of said housing with said pump,

(c) an anti-free-flow mechanism having a disengaged default state which obstructs flow through said tube segment when said housing is detached from said pump, and wherein the anti-free-flow mechanism is brought into an engaged default state, allowing fluid to flow through the channel, when said housing is attached to said pump and

(d) an anti-free-flow override mechanism engageable when said housing is detached from said pump, said override mechanism being configured to bring said anti-free-flow mechanism to a mechanically latched non-obstructing state,

wherein said anti free flow mechanism is configured to transition to said engaged default state from both said disengaged default state and said mechanically latched non-obstructing state.

10. The system according to claim 9, wherein said mechanically latched non-obstructing state is configured to allow fluid to flow through the channel.

11. The system of claim 9, wherein said override mechanism is configured to automatically disengage when said housing is attached to the pump.

12. The system of claim 9, wherein said anti-free-flow mechanism is a spring biased occlusion plate.

13. The system of claim 9, wherein said anti-free-flow mechanism obstructs flow in one direction.

14. The system of claim 9, wherein said anti-free-flow mechanism obstructs flow in two directions.

15. The system of claim 9, wherein said pump is a finger type peristaltic pump.

16. The housing of claim 9, wherein said tube segment is a pipe segment and has a first cross section shape.

17. A peristaltic pump comprising:

a pumping mechanism configured to induce flow of a fluid at least through a flexible segment within a detachable housing, wherein said pump-includes one or more interlock elements configured to facilitate detachable engagement of said pump with the housing and includes a releasing element configured to bring an anti-free-flow mechanism of the housing into a disengaged state which allows fluid to flow through the flexible segment, when the housing is attached to the pumping mechanism, wherein said releasing element is further adapted to automatically disengage an anti-free-flow override mechanism, which anti-free-flow override mechanism is engageable when said housing is detached from the pump, said override mechanism being configured to, when engaged, mechanically latch the anti-free-flow mechanism in a non-obstructing state allowing fluid to flow through the flexible segment.