Medical device system

• US 7,556,616 B2
• Filed: 04/13/2004
• Issued: 07/07/2009
• Est. Priority Date: 10/30/2003
• Status: Active Grant

• Current Assignee: ICU Medical Incorporated
• Original Assignee: Hospira Incorporated (Pfizer Inc.)
• Inventors: Ziegler, John S., Fathallah, Marwan A., Bakken, Todd J., Lee, Daniel J.
• Primary Examiner(s): Mendez; Manuel A
• Application Number:
  US10/823,220
• Publication Number:
  US 20050135047A1
• Time in Patent Office: 1,911 Days
• Field of Search: 604 65- 67, 604/131, 604/250, 128/DIG.12, 128/DIG.13, 244/55, 244/62, 245/63, 248/226.11, 248/316.1
• US Class Current: 604/131
• CPC Class Codes: A61M 2205/3569 sublocal, e.g. between console and disposable
• CPC Class Codes: A61M 2205/3576 with non implanted data transmission devices, e.g. using external transmitter or receiver
• CPC Class Codes: A61M 5/1413 Modular systems comprising interconnecting elements
• CPC Class Codes: A61M 5/1415 Stands, brackets or the like for supporting infusion accessories
• CPC Class Codes: F16B 2200/30 Dovetail-like connections
• CPC Class Codes: H05K 5/0021 Side-by-side or stacked arrangements

Abstract

A first portable medical device is adapted for use in an interlocking system for interlocking the first medical device to a second medical device. The first device includes a housing having opposite sides, a selective element, a blocking element, and an optional clamp mechanism. At least one of the opposite sides includes a matable element to detachably attach a second medical device. The selective element restricts the attachment of the second device to only one side of the first device. The blocking element prevents a third medical device from attaching to the first and second devices once the first and second devices are attached. The clamp restricts the attachment of the second device to only one side of the first device when the clamp is attached to a support member. The clamp permits slide-ratcheting axial movement of a clamp shaft.

Claims

1. A clamp mechanism for mounting a medical device to a support member, comprising:

a clamp body defining a first jaw, a second jaw and an opening therebetween adapted to receive a support member;

a clamp shaft including a forward end for extending into the opening, a rearward end, and an intermediate portion having a longitudinal axis and being mounted for axial movement on the first jaw of the clamp body;

ratchet and pawl means operatively interposed between the intermediate portion of the clamp shaft and the clamp body,

the ratchet and pawl means comprising ratchet teeth and a pawl;

biasing means for yieldingly urging the pawl and ratchet teeth into engagement with a biasing force; and

the biasing means, the ratchet teeth, and the pawl being configured and arranged to normally resist axial movement of the clamp shaft in a direction away from the opening and, upon application of an axial force to the clamp shaft sufficient to overcome the biasing force of the biasing means, to permit slide-ratcheting axial movement of the clamp shaft in a direction toward the opening.

2. A clamp mechanism in accordance with claim 1, wherein the clamp body has a hole therein for slidably receiving a locking element the locking element adapted to apply force on a component of the medical device when the clamp body is affixed to a support member.

3. A clamp mechanism in accordance with claim 1, wherein the first jaw and the second jaw are stationary.

4. A clamp mechanism in accordance with claim 1, wherein the first jaw of the clamp body has a clamp shaft receiving bore therein for slidably receiving the clamp shaft.

5. A clamp mechanism in accordance with claim 1, wherein the ratchet teeth are external threads formed on the intermediate portion of the clamp shaft, and wherein the threads have a forward lead flank and a rear load flank, the leading flank extending rearward to form an acute angle with a longitudinal axis of the clamp shaft and the load flank extending perpendicular to the longitudinal axis of the clamp shaft.

6. A clamp mechanism in accordance with claim 1, further comprising a release mechanism for overcoming the biasing force of the biasing means and disengaging the pawl and ratchet teeth, thereby permitting axial movement of the clamp shaft in the direction away from the opening.

7. A clamp mechanism in accordance with claim 6, wherein the release mechanism and the pawl means are a unitary body.

8. A clamp mechanism in accordance with claim 6, wherein the first jaw has a release bore therein and the release mechanism is an elongated pin slidably mounted in the release bore.

9. A clamp mechanism in accordance with claim 6, wherein the release mechanism has an adjustment slot extending therethrough for receiving the clamp shaft, the ratchet portion of the clamp shaft having threads with a major diameter and the adjustment slot having a length greater than the major diameter of the threads on the clamp shaft, the pawl being a portion of a wall of the adjustment slot having a thread thereon for matingly engaging the ratchet portion of the clamp shaft.

10. A clamp mechanism in accordance with claim 1, further comprising a hand knob attached to the second end of the clamp shaft.

11. A clamp mechanism in accordance with claim 10, further comprising a clutch mechanism operatively interposed between the hand knob and the clamp shaft, the clutch mechanism being adapted to prevent overtightening of the clamp shaft against a pole beyond a given torque value.

12. A clamp mechanism in accordance with claim 1, wherein the clamp mechanism is adapted to be rotatably associated with the medical device.

13. A clamp mechanism in accordance with claim 12, wherein the clamp mechanism includes a pivot latch adapted to selectively lock the clamp mechanism in a select one of a plurality of rotational positions with respect to the medical device.

14. A clamp mechanism for mounting a medical device to a support member, comprising:

a clamp body defining a first jaw, a second jaw and an opening therebetween adapted to receive a support member;

a clamp shaft including a forward end for extending into the opening, a rearward end, and an intermediate portion having a longitudinal axis and being mounted for axial movement on the first jaw of the clamp body;

ratchet and pawl means operatively interposed between the intermediate portion of the clamp shaft and the clamp body, the ratchet and pawl means comprising ratchet teeth and a pawl;

biasing means for yieldingly urging the pawl and ratchet teeth into engagement with a biasing force;

the biasing means, the ratchet teeth, and the pawl being configured and arranged to normally resist axial movement of the clamp shaft in a direction away from the opening; and

a release mechanism for overcoming the biasing force of the biasing means and disengaging the pawl and ratchet teeth, thereby permitting axial movement of the clamp shaft in the direction away from the opening;

wherein the release mechanism and the pawl means are a unitary 10 body.

15. A clamp mechanism in accordance with claim 14, wherein the ratchet teeth are external threads formed on the intermediate portion of the clamp shaft.

16. A clamp mechanism in accordance with claim 15, wherein the threads have a forward lead flank and a rear load flank, the leading flank extending rearward to form an acute angle with a longitudinal axis of the clamp shaft and the load flank extending perpendicular to the longitudinal axis of the clamp shaft.

17. A clamp mechanism in accordance with claim 14, wherein the first jaw of the clamp body has a clamp shaft receiving bore therein for slidably receiving the clamp shaft.

18. A clamp mechanism in accordance with claim 14, wherein the first jaw has a release bore therein and the release mechanism is an elongated pin slidably mounted in the release bore.

19. A clamp mechanism in accordance with claim 14, wherein the release mechanism has an adjustment slot extending therethrough for receiving the clamp shaft, the ratchet portion of the clamp shaft having threads with a major diameter and the adjustment slot having a length greater than the major diameter of the threads on the clamp shaft, the pawl being a portion of a wall of the adjustment slot having a thread thereon for matingly engaging the ratchet portion of the clamp shaft.

20. A clamp mechanism in accordance with claim 14, wherein the release mechanism includes a release lever pivotally mounted to the first jaw.

21. A clamp mechanism in accordance with claim 20, wherein the release mechanism including the release lever and pawl means are located on the exterior of the first jaw.

22. A clamp mechanism in accordance with claim 14, further comprising a hand knob attached to the second end of the clamp shaft.

23. A clamp mechanism in accordance with claim 22, further comprising a clutch mechanism operatively interposed between the hand knob and the clamp shaft, the clutch mechanism being adapted to prevent overtightening of the clamp shaft against a pole beyond a given torque value.

24. A clamp mechanism in accordance with claim 14, wherein the clamp mechanism is adapted to be rotatably associated with the medical device.

25. A clamp mechanism in accordance with claim 24, wherein the clamp mechanism includes a pivot latch adapted to selectively lock the clamp mechanism in a select one of a plurality of rotational positions with respect to the medical device.