Syringe assembly mounting system for inflation control system

• US 5,704,912 A
• Filed: 03/17/1995
• Issued: 01/06/1998
• Est. Priority Date: 03/17/1995
• Status: Expired due to Term

• Current Assignee: Advanced Cardiovascular Systems Incorporated
• Original Assignee: Advanced Cardiovascular Systems Incorporated
• Inventors: Lawrence, Ronald L., Sarno, Jay
• Primary Examiner(s): MCDERMOTT, CORRINE MARIE
• Application Number:
  US08/406,040
• Time in Patent Office: 1,026 Days
• Field of Search: 604/97-99, 604/151, 604/154, 604/155, 604/187, 128/DIG. 1
• US Class Current: 604/97.02
• CPC Class Codes: A61M 25/10182 Injector syringes
• CPC Class Codes: A61M 25/10188 Inflation or deflation data displays

Abstract

A syringe assembly for an inflation control system having a mounting head at one end is pivotally mounted in a mounting bracket for engagement with a drive arm. The mounting bracket is stationary in relation to the drive arm of the system. The mounting head includes a lateral projection on each of its sides having a shape and size selected for pivotal engagement with notches formed in side walls of the mounting bracket. The handle of the syringe plunger includes a driver retainer for capturing the drive arm in the longitudinal directions so that the longitudinal plunger movement is controlled by the drive arm. Neither the retainer nor the drive arm limits movement in the normal direction so that the syringe can be easily separated from the drive arm by an operator. A clamp secures the syringe barrel in the normal direction. Overcoming the force of the clamp is facilitated by the mechanical advantage provided by the pivotal mounting arrangement of the syringe assembly.

Claims

1. A syringe assembly for engagement with a fixed mounting bracket and with a plunger driver device that is movable in relation to the mounting bracket, the syringe assembly comprising:

a syringe barrel having a volume and having a first end and a second end;

a syringe plunger having a first end movably disposed in the syringe barrel for altering the volume in the syringe barrel and having a second end, with a syringe plunger longitudinal axis passing through said first end and said second end;

a mounting head fixedly disposed at the first end of the syringe barrel, the mounting head having a shape and a size selected for pivotal engagement with the mounting bracket, said pivotal engagement allowing the syringe assembly to pivot about a pivot axis which passes through the mounting bracket and which is non-parallel with the syringe plunger longitudinal axis; and

a driver retainer disposed at the second end of the syringe plunger adapted to engage the plunger driver device and move therewith.

2. The syringe assembly of claim 1 wherein the mounting head has a first lateral side, a second lateral side opposite the first lateral side, and a rounded lateral projection on each lateral side for pivotally engaging the mounting bracket.

3. The syringe assembly of claim 1 further comprising:

a syringe insertion device disposed on the syringe barrel for indicating the presence of the syringe assembly.

4. The syringe assembly of claim 1 further comprising:

a syringe insertion device disposed in the mounting head for indicating the presence of the syringe assembly.

5. A syringe assembly for engagement with a fixed mounting bracket and with a plunger driver device that is movable in relation to the mounting bracket, the syringe assembly comprising:

a syringe barrel having a volume and having a first end and a second end;

a syringe plunger having a first end movably disposed in the syringe barrel for altering the volume in the syringe barrel and having a second end;

a mounting head fixedly disposed at the first end of the syringe barrel, the mounting head having a shape and a size selected for pivotal engagement with the mounting bracket, wherein the mounting head includes a rounded lateral projection for pivotally engaging the mounting bracket; and

a driver retainer disposed at the second end of the syringe plunger adapted to engage the plunger driver device and move therewith.

6. The syringe assembly of claim 5 wherein the mounting head includes a second rounded lateral projection for pivotally engaging the mounting bracket, the second rounded lateral projection disposed opposite the first lateral projection.

7. A syringe assembly for engagement with a fixed mounting bracket and with a plunger driver device that is movable in relation to the mounting bracket, the syringe assembly comprising:

a syringe barrel having a volume and having a first end and a second end;

a syringe plunger having a first end movably disposed in the syringe barrel for altering the volume in the syringe barrel and having a second end;

a mounting head fixedly disposed at the first end of the syringe barrel, the mounting head having a shape and a size selected for pivotal engagement with the mounting bracket; and

a driver retainer disposed at the second end of the syringe plunger adapted to engage the plunger driver device and move therewith, wherein the drive retainer includes first and second retainer prongs adapted to receive the driver device between them and snap around the driver device so that the plunger moves with the driver device.

8. The syringe assembly of claim 7 wherein the first and second prongs each includes a barb for engaging a rear portion of the driver device.

9. A syringe assembly for engagement with a fixed mounting bracket and with a plunger driver device that is movable in relation to the mounting bracket, the syringe assembly comprising:

a syringe barrel having a volume and having a first end and a second end;

a syringe plunger having a first end movably disposed in the syringe barrel for altering the volume in the syringe barrel and having a second end, wherein the plunger comprises a handle disposed at the second end, the handle forming a "T" shape with the plunger;

a mounting head fixedly disposed at the first end of the syringe barrel, the mounting head having a shape and a size selected for pivotal engagement with the mounting bracket; and

a driver retainer disposed at the second end of the syringe plunger adapted to engage the plunger driver device and move therewith.

10. The syringe assembly of claim 9 wherein:

the handle comprises two extensions forming the shape of the T; and

the driver retainer is located between the two extensions and on the longitudinal axis of the plunger.

11. The syringe assembly of claim 9 wherein:

the handle comprises two extensions forming the shape of the T; and

each of the extensions is rounded.

12. A mounting system for mounting a syringe assembly with a movable driver device, the system comprising:

a mounting bracket located in a stationary position in relation to the moveable driver device;

a syringe barrel having a volume and having a first end and a second end;

a syringe plunger having a first end movably disposed in the syringe barrel for altering the volume in the syringe barrel and having a second end, with a syringe plunger longitudinal axis passing through said first end and said second end;

a mounting head fixedly disposed at the first end of the syringe barrel and received in the mounting bracket, the mounting head having a shape and a size selected for pivotal engagement with the mounting bracket, wherein the syringe assembly can pivot about a pivot axis which passes through the mounting bracket and which is non-parallel with the syringe plunger longitudinal axis; and

a driver retainer disposed at the second end of the syringe plunger adapted to engage the plunger driver device and move therewith.

13. The mounting system of claim 12 wherein:

the bracket includes two notches disposed on opposite sides of the bracket;

the mounting head has a first lateral side, a second lateral side opposite the first lateral side, and a rounded lateral projection on each lateral side for pivotally engaging respective notches of the mounting bracket.

14. The mounting system of claim 12 wherein the syringe assembly further comprises a syringe insertion device disposed on the syringe barrel for indicating the presence of the syringe assembly.

15. The mounting system of claim 14 wherein the syringe insertion device is disposed at the distal end of the syringe barrel.

16. The mounting system of claim 14, further comprising:

a syringe insertion detector that detects the syringe insertion device upon the proper insertion of the syringe assembly into the mounting bracket, said syringe insertion detector generating a signal indicating proper insertion of the syringe assembly into the mounting bracket.

17. The mounting system of claim 12 further comprising:

a detector connected to the mounting bracket that provides a signal indicating proper insertion of the syringe assembly into the mounting bracket.

18. The mounting system of claim 17 wherein the detector comprises an electrical pin that completes an electrical circuit upon proper insertion of the syringe assembly into the mounting bracket.

19. A mounting system for mounting a syringe assembly with a movable driver device, the system comprising:

a mounting bracket located in a stationary position in relation to the moveable driver device, the bracket comprising a notch;

a syringe barrel having a volume and having a first end and a second end;

a syringe plunger having a first end movably disposed in the syringe barrel for altering the volume in the syringe barrel and having a second end;

a mounting head fixedly disposed at the first end of the syringe barrel and received in the mounting bracket, the mounting head having a shape and a size selected for pivotal engagement with the mounting bracket, the mounting head including a rounded lateral projection for pivotally engaging the notch of the mounting bracket; and

a driver retainer disposed at the second end of the syringe plunger adapted to engage the plunger driver device and move therewith.

20. The mounting system of claim 19 wherein:

the bracket comprises a second notch disposed opposite the bracket from the first notch;

the mounting head includes a second rounded lateral projection for pivotally engaging the second notch of the mounting bracket, the second rounded lateral projection disposed opposite the first lateral projection on the mounting head.

21. A mounting system for mounting a syringe assembly with a movable driver device, the system comprising:

a mounting bracket located in a stationary position in relation to the moveable driver device;

a syringe barrel having a volume and having a first end and a second end;

a syringe plunger having a first end movably disposed in the syringe barrel for altering the volume in the syringe barrel and having a second end;

a mounting head fixedly disposed at the first end of the syringe barrel and received in the mounting bracket, the mounting head having a shape and a size selected for pivotal engagement with the mounting bracket; and

a driver retainer disposed at the second end of the syringe plunger adapted to engage the plunger driver device and move therewith, the driver retainer including first and second retainer prongs adapted to receive the driver device between them and snap around the driver device so that the plunger moves with the driver device.

22. The mounting system of claim 21 wherein the first and second prongs each includes a barb for engaging a rear portion of the driver device.

23. A mounting system for mounting a syringe assembly with a movable driver device, the system comprising:

a mounting bracket located in a stationary position in relation to the moveable driver device;

a syringe barrel having a volume and having a first end and a second end;

a syringe plunger having a first end movably disposed in the syringe barrel for altering the volume in the syringe barrel and having a second end, wherein the plunger comprises a handle disposed at the second end, the handle forming a "T" shape with the plunger;

a mounting head fixedly disposed at the first end of the syringe barrel and received in the mounting bracket, the mounting head having a shape and a size selected for pivotal engagement with the mounting bracket; and

a driver retainer disposed at the second end of the syringe plunger adapted to engage the plunger driver device and move therewith.

24. The mounting system of claim 23 wherein:

the handle comprises two extensions forming the shape of the T; and

the driver retainer is located between the two extensions and on the longitudinal axis of the plunger.

25. The mounting system of claim 23 wherein:

the handle comprises two extensions forming the shape of the T; and

each of the extensions is rounded.

26. A mounting system for mounting a syringe assembly with a movable driver device, the system comprising:

a mounting bracket located in a stationary position in relation to the moveable driver device;

a syringe barrel having a volume and having a first end and a second end;

a syringe plunger having a first end movably disposed in the syringe barrel for altering the volume in the syringe barrel and having a second end;

a mounting head fixedly disposed at the first end of the syringe barrel and received in the mounting bracket, the mounting head having a shape and a size selected for pivotal engagement with the mounting bracket;

a driver retainer disposed at the second end of the syringe plunger adapted to engage the plunger driver device and move therewith;

a plurality of electrical contacts in the mounting bracket;

a plurality of electrical contacts in the syringe assembly positioned to form connections with the mounting bracket electrical contacts when the syringe assembly is properly inserted into the mounting bracket; and

an electrical circuit that monitors current flow through the connections formed by the syringe assembly electrical contacts and mounting bracket electrical contacts, said electrical circuit providing a signal indicating proper insertion of the syringe assembly into the mounting bracket.

27. The mounting system of claim 26 wherein the syringe assembly has a longitudinal center line, and the syringe assembly electrical contacts are located off center from said longitudinal center line.

28. A syringe assembly for engagement with a fixed mounting bracket and with a plunger driver device that is movable in relation to the mounting bracket, the syringe assembly comprising:

a syringe barrel having a volume and having a first end and a second end;

a syringe plunger having a first end movably disposed in the syringe barrel for altering the volume in the syringe barrel and having a second end, with a longitudinal axis passing through said first end and said second end;

a mounting head fixedly disposed on the syringe barrel, the mounting head having a shape and a size selected for engagement with the mounting bracket; and

a driver retainer disposed at the second end of the syringe plunger adapted to longitudinally receive and capture the plunger driver device and longitudinally move therewith.

29. The syringe assembly of claim 28 wherein the driver retainer longitudinally secures the plunger driver device to the syringe plunger while permitting movement of the syringe plunger away from the plunger driver device in a normal direction.

30. The syringe assembly of claim 28 wherein the driver retainer includes first and second retainer prongs adapted to receive the driver device between them and snap around the driver device so that the plunger moves with the driver device.

31. The syringe assembly of claim 30 wherein the first and second prongs each includes a barb for engaging a rear portion of the driver device.

32. The syringe assembly of claim 28 wherein:

the second end of the syringe plunger comprises a handle having two extensions forming the shape of a T; and

the driver retainer is located between the two extensions and on the longitudinal axis of the plunger.