Pressure plate adaptors and methods

• US 5,879,144 A
• Filed: 08/14/1996
• Issued: 03/09/1999
• Est. Priority Date: 08/14/1996
• Status: Expired due to Fees

• Current Assignee: Smiths Medical MD Incorporated
• Original Assignee: Sims Deltec, Inc.
• Inventors: Johnson, Jay Gregory
• Primary Examiner(s): Izaguirre, Ismael
• Application Number:
  US08/696,533
• Time in Patent Office: 937 Days
• Field of Search: 417/474, 417/417, 417/477.2, 604/153, 604/131, 604/151
• US Class Current: 417/474
• 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

Abstract

A pressure plate for use with a pump includes a top surface configured for receipt of a tube and a plurality of side edges defining a channel communicating with the top surface. The pressure plate also includes a pair of hooks and a loop for releasably attaching the pressure plate to the pump. Attachment structure is provided for fixedly attaching the first end of the top surface to the pump. A method for attaching to a pump a reservoir having a tube includes providing a pressure plate with first and second ends and having an inlet tube slot and an outlet tube slot for holding the tube; attaching the first end of the pressure plate to the pump using a fastener, the fastener allowing the pressure plate to pivot toward and away from the pump; inserting the tube into the inlet tube slot and outlet tube slot; pivoting the second end of the pressure plate toward the pump; and attaching the second end of the pressure plate to the pump.

Claims

1. A pressure plate for use with a pump, the pressure plate comprising:

a top surface having first and second ends and being configured for receipt of a tube;

a plurality of side edges substantially orthogonal to the top surface, the side edges defining a channel communicating with the top surface;

a pair of hooks and a loop on the top surface for releasably attaching the pressure plate to the pump; and

attachment structure constructed and arranged for fixedly attaching the first end of the top surface to the pump, the second end being selectively moveable relative to the pump when the first end is fixedly attached to the pump.

2. The pressure plate of claim 1, wherein the pair of hooks are at the first end for engaging mating structure on the pump.

3. The pressure plate of claim 2, wherein the loop is at the second end for engaging mating structure on the pump.

4. The pressure plate of claim 1, wherein the attachment structure includes a fastener connecting the pressure plate to the pump.

5. The pressure plate of claim 4, wherein the fastener is a set screw.

6. The pressure plate of claim 1, wherein the attachment structure includes a pair of set screws connecting the pressure plate to the pump.

7. The pressure plate of claim 1, wherein the channel includes:

one of the side edges defining an inlet tube slot for accommodating a first end of the tube; and

a second of the side edges defining an outlet tube slot for accommodating a second end of the tube.

8. The pressure plate of claim 7, further comprising a keying system to ensure that the tube is properly installed in the pressure plate.

9. The pressure plate of claim 8, wherein the keying system includes a T-slot in the inlet tube slot adapted for accommodating a ring on the tube.

10. The pressure plate of claim 7, wherein the attachment structure includes a set screw.

16. The pressure plate of claim 1, wherein the first end is further pivotally attached to the pump at the hooks.

11. A method for mounting a pressure plate and a tube to a pump, the method comprising the steps of:

providing the pressure plate and the tube, the pressure plate having first and second ends, two hooks at the first end, and a loop at the second end, and having an inlet tube slot and an outlet tube slot for holding the tube;

pivotally mounting the first end of the pressure plate to the pump using a fastener, the pivotal mounting allowing the pressure plate to pivot toward and away from the pump, the step of pivotally mounting including the step of surrounding a portion of the pump with the fastener and one of the hooks;

inserting the tube into the inlet tube slot and outlet tube slot;

pivoting the second end of the pressure plate toward the pump; and

mounting the second end of the pressure plate to the pump.

12. The method of claim 11, wherein the step of inserting the tube is performed prior to the step of pivoting mounting the first end.

13. The method of claim 11, wherein the step of inserting the tube is performed after the step of pivoting mounting the first end.

14. The method of claim 11, wherein the step of pivoting mounting the first end of the pressure plate to the pump using a fastener includes inserting a set screw to connect the pressure plate to the pump.

15. The method of claim 11, further comprising the step of disconnecting the pressure plate from the pump.

17. A medical infusion pump system comprising:

a pump; and

a pressure plate including;

a pair of hooks and a loop for releasably attaching the pressure plate to the pump;

attachment structure constructed and arranged for fixedly attaching the pressure plate to the pump;

a first end for fixedly attaching to the pump with the attachment structure; and

a second end which is selectively moveable when the first end is fixedly attached to the pump.

18. The system of claim 17, further comprising a fluid reservoir having a tube, the pressure plate being configured for holding the tube.

19. The system of claim 17, wherein the pressure plate includes:

a top surface having first and second ends; and

a plurality of side edges substantially orthogonal to the top surface, the side edges defining a channel communicating with the top surface.

20. The system of claim 19, wherein the pair of hooks are at the first end of the pressure plate and mateably engage a pair of pins on the pump.

21. The system of claim 19, wherein the attachment structure includes a fastener at the first end of the pressure plate.

22. The system of claim 19, further comprising a tube being held in the pressure plate by the channel.

23. The system of claim 22, wherein the tube is attached to a fluid reservoir.

24. The system of claim 22, further comprising a keying system to ensure that the tube is properly installed in the pressure plate.

25. The system of claim 24, wherein the keying system includes a ring on the tube, a T-slot in the channel, and a large diameter portion on the tube.

26. The system of claim 24, further comprising a plurality of ribs engaging preceding the single occurrence of "large diameter portion", a large diameter portion of the tube.

27. The system of claim 21, further comprising a pair of pins on the pump for engaging the pair of hooks.

28. The system of claim 27, wherein the fastener engages at least one of the hooks to trap at least one of the pins between the at least one hook and the fastener.

29. The system of claim 17, wherein the first end is further pivotally attached to the pump at the hooks.

30. A method for mounting a pressure plate and a tube to a pump, the method comprising the steps of:

providing the pressure plate and the tube, the pressure plate having an inlet tube slot and an outlet tube slot for holding the tube;

pivotally mounting the first end of the pressure plate to the pump using a fastener, the pivotal mounting allowing the pressure plate to pivot toward and away from the pump, the fastener selectively moveable relative to the pressure plate, the step of pivotally mounting including the step of moving the fastener so as to surround a portion of the pump with the fastener and a portion of the pressure plate;

inserting the tube into the inlet tube slot and outlet tube slot after mounting the first end of the pressure plate to the pump using the fastener;

pivoting the second end of the pressure plate toward the pump; and

mounting the second end of the pressure plate to the pump.

31. A method for mounting a pressure plate and a tube to a pump, the method comprising the steps of:

providing the pressure plate and the tube, the pressure plate having an inlet tube slot and an outlet tube slot for holding the tube;

pivotally mounting the first end of the pressure plate to the pump using a set screw to connect the pressure plate to the pump, the pivotal mounting allowing the pressure plate to pivot toward and away from the pump, the set screw selectively moveable relative to the pressure plate, the step of pivotally mounting including the step of moving the set screw so as to surround a portion of the pump with the set screw and a portion of the pressure plate;

inserting the tube into the inlet tube slot and outlet tube slot;

pivoting the second end of the pressure plate toward the pump; and

mounting the second end of the pressure plate to the pump.