Pump with anti-free flow feature

• US 6,261,262 B1
• Filed: 06/12/1997
• Issued: 07/17/2001
• Est. Priority Date: 06/12/1997
• Status: Expired due to Term

• Current Assignee: ICU Medical Incorporated
• Original Assignee: Abbott Laboratories
• Inventors: Hall, Allen C., Sampson, Russel M., Briggs, Kenneth D.
• Primary Examiner(s): Seidel, Richard K.
• Assistant Examiner(s): HAYES, MICHAEL J
• Application Number:
  US08/873,475
• Time in Patent Office: 1,496 Days
• Field of Search: 604/153, 604/30, 604/34, 604/65, 604/151, 604/250, 604/245, 604/246, 604/200, 604/251, 251/7, 417/474, 417/480
• US Class Current: 604/153
• CPC Class Codes: A61M 39/281 Automatic tube cut-off devices, e.g. squeezing tube on detection of air
• CPC Class Codes: A61M 39/287 Wedge formed by a slot having varying width, e.g. slide clamps
• CPC Class Codes: A61M 5/142 Pressure infusion, e.g. using pumps
• CPC Class Codes: A61M 5/14228 with linear peristaltic action, i.e. comprising at least three pressurising members or a helical member

Abstract

A peristaltic pump is provided with a housing, a pump head in the housing, and a receiving path defined along a housing and pump head for receiving tubing. A door is pivotable about an axis between a closed position covering the receiving path and an open position exposing the receiving path. A carrier is provided on the housing for holding an anti-free flow slide clamp on the tubing in the receiving path. The carrier is movable relative to the housing so as to automatically effect closure of the tubing by the slide clamp when the door is opened.

Claims

1. A pump comprising:

(a) a housing having a receiving path for receiving tubing through which fluid is pumped;

(b) a door pivotable with respect to said housing about an axis; and

(c) a carrier means on said housing for carrying a clamp on said tubing, said carrier means movable relative to said housing in a direction parallel to said axis;

said carrier means includes a carrier defining first and second slots for receiving said clamp; and

said second slot extends from, and is generally normal to, said first slot.

2. The pump in accordance with claim 1 in which

said door is pivotable about said axis between a closed position covering said receiving path and an open position exposing said receiving path; and

said carrier means includes a carrier adapted for holding said clamp on said tubing, and said clamp is an anti-free flow slide clamp.

3. The pump in accordance with claim 1 in which

said carrier means includes a carrier for holding said clamp in an orientation wherein a portion of said clamp projects beyond said carrier;

a portion of said receiving path adjacent said carrier includes a channel; and

said housing defines a groove that is (1) oriented generally normal to said channel, and (2) extends through said channel adjacent said carrier for receiving a portion of said clamp extending from said carrier.

4. A pump comprising:

a housing;

a receiving path defined along said housing for receiving tubing;

a door pivotable about an axis between a closed position covering said receiving path and an open position exposing said receiving path; and

a carrier on said housing for holding an anti-free flow slide clamp defining an elongate aperture, said carrier adapted to hold said clamp in an orientation wherein said clamp aperture lies in a plane parallel to said door axis.

5. The pump in accordance with claim 4 in which

said carrier is adapted to hold said clamp wherein said clamp has (1) a narrow portion for squeezing said tubing into a closed configuration, and (2) a wide portion for receiving said tubing in an unsqueezed, open configuration,

said carrier defines first and second slots for receiving said clamp; and

said second slot extends from, and is generally normal to, said first slot.

6. The pump in accordance with claim 4 in which

a portion of said receiving path adjacent said carrier includes a channel;

and

said housing defines a groove that is (1) oriented generally normal to said channel, and (2) extends through said channel adjacent said carrier for receiving a portion of said clamp extending from said carrier.

7. The pump in accordance with claim 4 in which said carrier is movable toward and away from a portion of said receiving path in opposite directions parallel to said door axis.

8. The pump in accordance with claim 4 in which

said pump includes a pump head in said housing;

said pump is adapted to be disposed in a normal operating orientation wherein said pump has (1) a middle portion that includes said pump head, (2) an upper portion above said pump head, and (3) a lower portion below said pump head; and

said receiving path is oriented substantially along a plane which is generally vertical when said pump is in said normal operating orientation.

9. The pump in accordance with claim 4 wherein the tubing is received in the elongate aperture.

10. A peristaltic pump comprising:

a housing;

a receiving path defined substantially in a plane along said housing for receiving tubing; and

a carrier on said housing for holding an anti-free flow slide clamp, said carrier being moveable relative to said housing in a direction parallel to said plane defined by said receiving path, said clamp defines an elongate aperture having (1) a narrow portion for squeezing said tubing into a closed configuration, and (2) a wide portion for receiving said tubing in an unsqueezed, open configuration.

11. The pump in accordance with claim 10 in which

said carrier defines first and second slots for receiving said clamp and

said second slot extends from, and is generally normal to, said first slot.

12. The pump in accordance with claim 11 in which said carrier has a surface defining said second slot, and said surface has a detent for engaging said clamp.

13. The pump in accordance with claim 10 in which

a portion of said receiving path adjacent said carrier includes a channel;

and

said housing defines a groove that is (1) oriented generally normal to said channel, and (2) extends through said channel adjacent said carrier for receiving a portion of said clamp that extends from said carrier.

14. The pump in accordance with claim 10 in which

said pump has a door pivotable about an axis between a closed position covering said receiving path and an open position exposing said receiving path;

and

said carrier is movable toward and away from said receiving path in opposite directions parallel to said door axis.

15. The pump in accordance with claim 10 in which

said pump includes a peristaltic pump head in said housing;

said pump is adapted to be disposed in a normal operating orientation wherein said pump has (1) a middle portion that includes said pump head, (2) an upper portion above said pump head, and (3) a lower portion below said pump head; and

said receiving path is oriented substantially along a plane which is generally vertical when said pump is in said normal operating orientation.

16. A pump comprising:

a housing which defines (1) a receiving path for receiving tubing extending from an inlet end of said path to an outlet end of said path, and (2) a groove that is (a) oriented generally normal to a portion of said receiving path, and (b) communicates with said receiving path; and

a carrier into which can be inserted an anti-free flow clamp, said carrier being located adjacent said housing receiving path and groove, said carrier defining first and second slots for receiving portions of said clamp, said second slot extending from said first slot, said second slot being generally normal to said first slot and aligned with said housing groove.

17. The pump in accordance with claim 16 in which a portion of said receiving path adjacent said carrier includes a channel which is generally normal to said groove.

18. The pump in accordance with claim 16 in which said carrier is movable toward and away from said receiving path in opposite directions parallel to said second slot and said groove.

19. The pump in accordance with claim 16 in which

said pump includes a peristaltic pump head along said receiving path between said inlet end and said outlet end;

said pump is adapted to be disposed in a normal operating orientation wherein said pump has (1) a middle portion that includes said pump head, (2) an upper portion above said pump head, and (3) a lower portion below said pump head; and

said receiving path is oriented substantially along a plane which is generally vertical when said pump is in said normal operating orientation.

20. The pump in accordance with claim 16 in which said pump includes a door having a closed position covering said receiving path and an open position exposing said receiving path.

21. In a pump which includes (1) a receiving path for receiving tubing extending from an inlet end of the path to an outlet end of the path, and (2) a peristaltic pump head along said receiving path between said inlet end and said outlet end, the improvement comprising:

a carrier into which can be inserted an anti-free flow clamp, said carrier being located adjacent said receiving path between said inlet end and said pump head;

said carrier defines first and second slots for receiving said clamp; and

said second slot extends from, and is generally normal to, said first slot.

22. The improvement in accordance with claim 21 in which

said carrier is adapted to receive said clamp in the form of a unitary slide clamp which can be positioned on said tubing in a closed condition squeezing said tubing into a closed configuration;

said pump is adapted to be disposed in a normal operating orientation wherein said pump has (1) a middle portion that includes said pump head, (2) an upper portion above said pump head, and (3) a lower portion below said pump head;

said receiving path is oriented substantially along a plane which is generally vertical when said pump is in said normal operating orientation;

said inlet end is located in said upper portion; and

said outlet end is located in said lower portion.

23. The improvement in accordance with claim 21 in which

said carrier is movable generally perpendicularly relative to at least a portion of said receiving path;

and

said portion of said receiving path adjacent said carrier includes a channel.

24. The improvement in accordance with claim 23 in which said pump defines a groove that is (1) oriented generally normal to said channel, and (2) extends through said channel adjacent said carrier for receiving a portion of said clamp extending from said carrier.

25. In a pump which includes (1) a receiving tubing extending from an inlet end of the path to an outlet end of the path, and (2) a peristaltic pump head along said receiving path between said inlet end and said outlet end, the improvement comprising:

a carrier for holding an anti-free flow clamp on said tubing for operation between a closed condition squeezing said tubing into a closed configuration and an open condition in which said tubing is free to return to an open configuration, said barrier being lacated adjacent said receiving path between said inlet end and said pump head to position a portion of said clamp across said receiving path when said clamp is inserted into said carrier into said closed condition on said tubing so that said tubing can be loaded into said receiving path beginning at said inlet end and terminating at said outlet end;

said pump has a door pivotable about an axis between a closed position covering said receiving path and an open position exposing said receiving path; and

said carrier is movable toward and away from said receiving path in opposite direction parallel to said door axis.

26. The improvement in accordance with claim 25 in which said carrier is movable toward and away from said adjacent receiving path.

27. The improvement in accordance with claim 25 in which

said carrier is adapted to receive said clamp in the form of a unitary slide clamp;

said pump is adapted to be disposed in a normal operating orientation wherein said pump has (1) a middle portion that includes said pump head, (2) an upper portion above said pump head, and (3) a lower portion below said pump head;

said receiving path is oriented substantially along a plane which is generally vertical when said pump is in said normal operating orientation;

said inlet end is located in said upper portion;

said outlet end is located in said lower portion;

a portion of said receiving path adjacent said carrier defines a channel; and

said pump defines a groove that (1) is oriented generally normal to said channel, and (2) extends through said channel adjacent said carrier for receiving a portion of said clamp extending from said carrier.

28. The pump in accordance with claim 25 in which

said pump is adapted to be disposed in a normal operating orientation wherein said pump has (1) a middle portion that includes said pump head, (2) an upper portion above said pump head, and (3) a lower portion below said pump head;

and

said receiving path is oriented substantially along a plane which is generally vertical when said pump is in said normal operating orientation.

29. A pump comprising:

a housing;

a peristaltic pump head in said housing;

a receiving path defined along said housing and said pump head for receiving tubing;

a door pivotable about a first axis between a closed position covering said receiving path and an open position exposing said receiving path;

a carrier on said housing for holding an anti-free flow slide clamp defining an elongate aperture, said carrier adapted to hold said clamp in an orientation wherein said clamp aperture lies in a plane parallel to said door axis, said carrier being mounted on said housing to accommodate reciprocatable movement toward and away from a portion of said receiving path;

a handle pivotally mounted to said door about a second axis perpendicular to said first axis, said handle having a camming surface;

a cam follower element pivotally mounted to said housing about a third pivot axis for being engaged and pivoted by said handle camming surface when said handle is pivoted while said door is at said closed position;

a link pivotally connected to said cam follower element about a fourth pivot axis and pivotally connected to said carrier about a fifth pivot axis; and

a spring acting between said cam housing and said cam follower element to urge said follower element to pivot about said third pivot axis in a direction to move said carrier toward said portion of said receiving path.

30. A pump comprising:

(a) a housing having a receiving path that includes at least a portion lying in a straight line and that is adapted to receive tubing through which fluid is pumped; and

(b) a carrier means on said housing for carrying a clamp on said tubing, said carrier means movable relative to said housing in a direction parallel to said straight line;

said carrier means includes a carrier adapted for holding an anti-free flow clamp defining an elongate aperture that lies generally in a plane and that has (1) a narrow portion for squeezing said tubing into a closed configuration, and (2) a wide portion for receiving said tubing in an unsqueezed, open configuration.

31. The pump in accordance with claim 30 in which said pump includes a peristaltic pump head lying along said receiving path straight line portion.

32. A system for delivering a fluid through tubing comprising:

(A) a clamp for clamping the tubing; and

(B) a pump including

(1) a housing having a receiving path for receiving the tubing through which the fluid is pumped; and

(2) a carrier mounted in said housing for carrying said clamp on the tubing, said carrier being movable relative to said housing, said carrier defines first and second slots for each receiving said clamp; and

said second slot extends from, and is generally normal to, said first slot.

33. The system in accordance with claim 32 in which

said clamp has a laterally extending foot and a projecting portion extending from said foot, wherein said first and second slots receive said clamp foot and projecting portion, respectively.

34. The system in accordance with claim 32 in which

said carrier is adapted for holding said clamp in an orientation wherein a projecting portion of said clamp projects beyond said carrier;

a portion of said receiving path adjacent said carrier includes a channel; and

said housing defines a groove that is (1) oriented generally normal to said channel, and (2) extends through said channel adjacent said carrier for receiving said projecting portion of said clamp extending from said carrier.

35. A pump comprising:

(a) a housing having a receiving path for receiving tubing though which fluid is pumped;

(b) a door pivotable with respect to said housing about an axis;

(c) a carrier on said housing for carrying a clamp on said tubing, said carrier means movable relative to said housing in a direction parallel to said axis,

said door is pivotable about said axis between a closed position covering said receiving path and an open position exposing said receiving path,

said carrier is adapted for holding said clamp on said tubing, and said clamp is an anti-free flow clamp having an elongate aperture for receiving the tubing.