Multi-fluid medical injector system and methods of operation

• US 8,945,051 B2
• Filed: 07/20/2010
• Issued: 02/03/2015
• Est. Priority Date: 07/24/2009
• Status: Active Grant

• Current Assignee: Bayer Healthcare LLC (Bayer AG)
• Original Assignee: Bayer Medical Care Inc. (Bayer AG)
• Inventors: Schriver, Ralph H., Riley, Michael, Spohn, Michael, Campbell, Patrick B., Dedig, James A., Barlow, William D., Maihoefer, Andreas, Joyce, Thomas P., Stokes, Jerry A.
• Primary Examiner(s): CHAO, ELMER M
• Application Number:
  US13/386,765
• Publication Number:
  US 20120123257A1
• Time in Patent Office: 1,659 Days
• Field of Search: 604/131, 604/134, 604/140, 604/143, 604/151, 604/152, 604/154, 604/218, 604/227, 604/228, 604/232, 604/233, 604/155, 600/432, 128/655, 222/390, 222/391, 222/327
• US Class Current: 604/131
• CPC Class Codes: A61B 6/481 involving the use of contrast agents
• CPC Class Codes: A61B 6/507 for determination of haemodynamic parameters, e.g. perfusion CT
• CPC Class Codes: A61M 2005/1402 Priming
• CPC Class Codes: A61M 2005/1403 Flushing or purging
• CPC Class Codes: A61M 2005/14553 comprising a pressure jacket
• CPC Class Codes: A61M 5/007 for contrast media
• CPC Class Codes: A61M 5/1407 Infusion of two or more substances
• CPC Class Codes: A61M 5/142 Pressure infusion, e.g. using pumps
• CPC Class Codes: A61M 5/14546 Front-loading type injectors
• CPC Class Codes: A61M 5/1458 Means for capture of the plunger flange
• CPC Class Codes: A61M 5/16827 controlling delivery of multiple fluids, e.g. sequencing, mixing or via separate flow-paths infusion of multiple fluids without using a controller A61M5/1407
• CPC Class Codes: A61M 5/1782 Devices aiding filling of syringes in situ combination of a vial and a syringe for transferring or mixing their contents A61J1/2096, filling of medical containers in general B65B3/003

Abstract

A multi-fluid injector system and methods of operation thereof are presented. One embodiment of such a fluid injector system includes a powered injector, a pressure jacket support, a syringe pressure jacket, and a syringe. The pressure jacket support includes a front plate and a rear plate. The rear plate is connected to the injector and the front plate is spaced from the rear plate and defines a slot. The syringe pressure jacket has a proximal end pivotally connected to the rear plate so that a distal end of the pressure jacket pivots relative to the front plate. The syringe has a syringe body with a distally extending discharge conduit. With the syringe disposed in a barrel of the pressure jacket, pivotal movement of the pressure jacket results in the distal end thereof pivoting toward the front plate to place the discharge conduit within the slot in the front plate.

Claims

1. A fluid injector system, comprising:

a powered injector;

a pressure jacket support comprising a front plate and a rear plate, wherein the rear plate is connected to the powered injector and the front plate is spaced from the rear plate and has a slot defined therein;

a syringe pressure jacket having a proximal end pivotally connected to the rear plate so that a distal end of the syringe pressure jacket pivots relative to the front plate; and

a syringe comprising a syringe body with a distally extending discharge conduit and a conical distal end forming a closed apex point;

wherein when the syringe is disposed in a barrel of the syringe pressure jacket, pivotal movement of the syringe pressure jacket distal end toward the front plate places the discharge conduit within the slot in the front plate,

wherein the front plate defines a mating recess defining an apex curve for the closed apex point such that the closed apex point of the conical distal end is received in the apex curve as the discharge conduit is received in the slot in the front plate,

wherein the discharge conduit is offset from a central longitudinal axis of the syringe body, and

wherein the pivotal movement of the syringe pressure jacket distal end towards the front plate causes the closed apex point to define an arc path to seat the closed apex point in a central and deepest point in the apex curve in the mating recess, the seated engagement providing a self-centering action for the syringe body to counteract an upward directed force imparted to the syringe body when the syringe is pressurized.

2. The fluid injector system of claim 1, wherein the mating recess is offset from the slot in the front plate.

3. The fluid injector system of claim 1, wherein the slot in the front plate intersects the mating recess.

4. The fluid injector system of claim 1, wherein the syringe body comprises at least one key element and the syringe pressure jacket defines at least one internal keyway for receiving the at least one key element to orient the syringe body in the syringe pressure jacket.

5. The fluid injector system of claim 1, further comprising:

a fluid control valve connected to the discharge conduit extending from the syringe body.

6. The fluid injector system of claim 5, wherein the fluid control valve comprises one of a stopcock, a piston valve, and a dual check valve.

7. A fluid injector system, comprising:

a powered injector;

a pressure jacket support comprising a front plate and a rear plate, wherein the rear plate is connected to the powered injector and the front plate is spaced from the rear plate and has a slot defined therein;

a syringe pressure jacket having a proximal end pivotally connected to the rear plate so that a distal end of the syringe pressure jacket pivots relative to the front plate;

a syringe comprising a syringe body with a distally extending discharge conduit and a conical distal end forming a closed apex point; and

a fluid control module connected to the front plate,

wherein when the syringe is disposed in a barrel of the syringe pressure jacket, pivotal movement of the syringe pressure jacket distal end toward the front plate places the discharge conduit within the slot in the front plate,

wherein the front plate defines a mating recess defining an apex curve for the closed apex point such that the closed apex point of the conical distal end is received in the apex curve as the discharge conduit is received in the slot in the front plate,

wherein the discharge conduit is offset from a central longitudinal axis of the syringe body, and

wherein the pivotal movement of the pressure jacket distal end towards the front plate causes the closed apex point to define an arc path to seat the closed apex point in a central and deepest point in the apex curve in the mating recess, the seated engagement providing a self-centering action for the syringe body to counteract an upward directed force imparted to the syringe body when the syringe is pressurized.

8. The fluid injector system of claim 7, wherein the mating recess is offset from the slot in the front plate.

9. The fluid injector system of claim 7, wherein the slot in the front plate intersects the mating recess.

10. The fluid injector system of claim 7, wherein the syringe body comprises at least one key element and the syringe pressure jacket defines at least one internal keyway for receiving the at least one key element to orient the syringe body in the syringe pressure jacket.

11. The fluid injector system of claim 7, further comprising:

a fluid control valve connected to the discharge conduit extending from the syringe body.

12. The fluid injector system of claim 11, wherein the fluid control valve comprises one of a stopcock, a piston valve, and a dual check valve.

13. The fluid injector system of claim 11, wherein pivotal movement of the syringe pressure jacket distal end toward the front plate further operatively interfaces the fluid control valve with the fluid control module.

14. The fluid injector system of claim 13, wherein the fluid control module comprises a control valve actuator that operates the fluid control valve.

15. A method of operating a fluid injector system, the method comprising:

providing a powered injector comprising;

a pressure jacket support comprising a front plate and a rear plate, wherein the rear plate is connected to the powered injector and the front plate is spaced from the rear plate and has a slot defined therein; and

a syringe pressure jacket having a proximal end pivotally connected to the rear plate of the pressure jacket support so that a distal end of the syringe pressure jacket pivots relative to the front plate of the pressure jacket support;

loading a syringe into a barrel of the syringe pressure jacket, the syringe comprising a syringe body with a distally extending discharge conduit and a conical distal end forming a closed apex point; and

pivoting the pressure jacket distal end toward the front plate of the pressure jacket support to place the discharge conduit within the slot in the front plate,

wherein the front plate of the pressure jacket support defines a mating recess defining an apex curve for the closed apex point such that the closed apex point of the conical distal end is received in the apex curve as the discharge conduit is received in the slot in the front plate,

wherein the discharge conduit is offset from a central longitudinal axis of the syringe body, and

wherein the pivotal movement of the syringe pressure jacket distal end towards the front plate causes the closed apex point to define an arc path to seat the closed apex point in a central and deepest point in the apex curve in the mating recess, the seated engagement providing a self-centering action for the syringe body to counteract an upward directed force imparted to the syringe body when the syringe is pressurized.

16. The method of claim 15, wherein the mating recess is offset from the slot in the front plate.

17. The method of claim 15, wherein the slot in the front plate intersects the mating recess.

18. The method of claim 15, further comprising:

pivoting the injector onto one lateral side to orient the discharge conduit to a top position;

performing a fluid priming and an air purging procedure on the syringe; and

pivoting the injector onto its opposing lateral side to orient the discharge conduit to a bottom position.

19. The method of claim 18, further comprising:

associating a single-use fluid delivery set with the syringe.

20. The method of claim 19, further comprising:

performing a fluid priming and an air purging procedure on the single-use fluid delivery set.

21. A method of operating a fluid injector system, the method comprising:

providing a powered injector comprising a pressure jacket supporting a syringe, the pressure jacket pivotally connected to the powered injector, and a pressure jacket support comprising a front plate defining a slot and a rear plate, the syringe comprising a syringe body with a distally extending discharge conduit and a conical distal end forming a closed apex point;

pivoting the pressure jacket toward the front plate to place the discharge conduit within the slot in the front plate, the front plate defining a mating recess defining an apex curve for the closed apex point such that the closed apex point of the conical distal end is received in the apex curve as the discharge conduit is received in the slot in the front plate;

pivoting the injector onto one lateral side to orient the discharge conduit to a top position; and

performing a fluid priming and an air purging procedure on the syringe,

wherein the discharge conduit is offset from a central longitudinal axis of the syringe body, and

wherein the pivotal movement of the pressure jacket distal end towards the front plate causes the closed apex point to define an arc path to seat the closed apex point in a central and deepest point in the apex curve in the mating recess, the seated engagement providing a self-centering action for the syringe body to counteract an upward directed force imparted to the syringe body when the syringe is pressurized.

22. The method of claim 21, further comprising:

pivoting the injector onto its opposing lateral side to orient the discharge conduit to a bottom position;

associating a single-use fluid delivery set with the syringe to be in fluid communication with the syringe body; and

performing a fluid priming and an air purging procedure on the single-use fluid delivery set.