Push to install syringe mount for powered injector systems

• US 9,078,966 B2
• Filed: 12/02/2008
• Issued: 07/14/2015
• Est. Priority Date: 12/07/2007
• Status: Expired due to Fees

• Current Assignee: Liebel Flarsheim Co LLC (Mallinckrodt plc)
• Original Assignee: Liebel Flarsheim Co LLC (Mallinckrodt plc)
• Inventors: Bruce, John K.
• Primary Examiner(s): Gupta, Vani
• Application Number:
  US12/746,192
• Publication Number:
  US 20100280369A1
• Time in Patent Office: 2,415 Days
• Field of Search: 600/432
• US Class Current: 1/1
• CPC Class Codes: A61B 6/00 Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment instruments measuring radiation intensity for application in the field of nuclear medicine, e.g. in vivo counting, G01T1/161; apparatus for taking X-ray photographs G03B42/02
• CPC Class Codes: A61M 5/14546 Front-loading type injectors
• CPC Class Codes: A61M 5/14566 with a replaceable reservoir for receiving a piston rod of the pump
• CPC Class Codes: A61M 5/32 Needles; Details of needles pertaining to their connection with syringe or hub infusion needles A61M5/158; Accessories for bringing the needle into, or holding the needle on, the body A61M5/42, A61M5/46 take precedence; guide needles for catheters A61M25/065; Devices for protection of needles apparatus specially adapted for cleaning or sterilising needles A61M5/001
• CPC Class Codes: A61M 5/46 having means for controlling depth of insertion

Abstract

Disclosed embodiments provide for a syringe mount of a power injector. The syringe mount may include a plurality of syringe retainer components that translate (e.g., move linearly without rotation) toward and away from a longitudinal axis of the injector drive ram. These retainer components may be biased (e.g., via a spring) toward one another and/or the longitudinal axis of the injector drive ram.

Claims

1. A front-loading, contrast media injector comprising:

an injector housing having an opening defined therein;

a drive ram, at least a portion of which is movable into and out of the injector housing along a longitudinal reference axis of the drive ram through the opening in the injector housing; and

a syringe mount coupled to the injector housing and comprising a plurality of retainer components, wherein the plurality of retainer components collectively define a syringe-receiving aperture that is aligned with the opening in the injector housing, wherein each the plurality of retainer components are disposed about an exterior of a syringe and are in position to restrain movement of a syringe away from the injector housing when the syringe is installed on the contrast media injector and as the drive ram is advanced in the direction of the syringe, wherein each of the retainer components comprises a sloped surface that defines a perimeter portion of the syringe-receiving aperture, wherein the sloped surface of each of the retainer components projects in a direction of the longitudinal reference axis and projects toward the exterior of the syringe when installed on the contrast media injector using the syringe mount, wherein the sloped surface of each of the retainer components slopes toward the longitudinal reference axis of the drive ram progressing along the longitudinal reference axis in the direction of the injector housing, wherein each of the retainer components translates linearly toward the longitudinal reference axis, wherein each of the retainer components translates linearly away from the longitudinal reference axis, wherein each of the retainer components is biased toward the longitudinal reference axis, wherein the plurality of retainer components comprises first and second retainer components, wherein the first and second retainer components each translate linearly toward the longitudinal reference axis to both reduce a spacing between the first and second retainer components and to reduce a size of the syringe-receiving aperture, wherein the first and second retainer components each translate linearly away from the longitudinal reference axis to both increase the spacing between the first and second retainer components and to increase the size of the syringe-receiving aperture, and wherein the size of the syringe-receiving aperture is taken perpendicularly to the longitudinal reference axis.

2. The injector of claim 1, wherein each of the retainer components is spring-biased toward the longitudinal reference axis of the drive ram.

3. The injector of claim 1, wherein the longitudinal reference axis of the drive ram is interposed between and does not intersect either of the first and second retainer components.

4. The injector of claim 1, wherein each of the first and second retainer components comprises a C-clamp.

5. The injector of claim 1, wherein the sloped surface of each of the retainer components is designed to cause translation of the retainer components outwardly away from the longitudinal reference axis of the drive ram when a syringe is moved along the longitudinal reference axis toward the opening in the injector housing.

6. The injector of claim 1, wherein the sloped surface of each of the retainer components is designed to cause translation of the retainer components outwardly away from the longitudinal reference axis of the drive ram when a syringe is moved along the longitudinal reference axis into the opening in the injector housing.

7. The injector of claim 1, wherein the syringe-receiving aperture comprises a substantially conical aperture adapted to receive a syringe.

8. The injector of claim 1, wherein each of the plurality of retainer components has a receptacle defined therein to accommodate at least a portion of a flange of a syringe.

9. The injector of claim 1, further comprising a lock adapted to secure the plurality of retainer components in a desired position.

10. The injector of claim 9, wherein the lock comprises a lever.

11. The injector of claim 10, wherein the plurality of retainer components are separated from one another by a first distance when the lever is in a first position, and wherein the plurality of retainer components are separated from one another by a second distance greater than the first distance when the lever is in a second position different from the first position.

12. The injector of claim 1, wherein the syringe mount is a component of a removable face plate of the injector.

13. The injector of claim 1, wherein the syringe mount is substantially integral with the injector housing.

14. The injector of claim 1, wherein the syringe mount is a component of an adapter for at least temporarily making an original syringe mount of the injector compatible to accommodate a syringe that the original syringe mount was not originally designed to accommodate.

15. The injector of claim 1, further comprising a syringe disposed between the plurality of retainer components.

16. The injector of claim 15, further comprising contrast media, saline, or a combination thereof disposed within the syringe.

17. The injector of claim 1, wherein the sloped surface comprises a first tapered portion that slopes toward the longitudinal reference axis of the drive ram progressing along the longitudinal reference axis in the direction of the injector housing.

18. The injector of claim 17, wherein each of the retainer components further comprises a second tapered portion that slopes away from the longitudinal reference axis proceeding in the direction of the injector housing, and wherein each of the second tapered portions is located between the first tapered portion of the corresponding retainer component and the injector housing.

19. The injector of claim 17, wherein an interaction between a syringe and the sloped surface of each of the retainer components, while moving the syringe relative to the injector housing and along the longitudinal reference axis to install the syringe on the injector housing, linearly moves the retainer components away from the longitudinal reference axis.

20. A method of using a contrast media injector having a drive ram, at least a portion of which is movable into and out of an injector housing along a longitudinal reference axis of the drive ram, the method comprising:

installing a syringe on the injector, wherein the installing comprises;

contacting a sloping surface of each of first and second components of the injector with a syringe;

moving the syringe along the longitudinal reference axis of the drive ram, wherein the moving comprises moving the syringe along the sloping surface of the first component during the contacting and moving the syringe along the sloping surface of the second component during the contacting;

linearly translating an entirety of each of the first and second components of the injector both away from one another and away from the longitudinal reference axis, all due to the moving of the syringe along the longitudinal reference axis of the drive ram and the contacting of the syringe with the sloping surface of each of the first and second components; and

automatically moving the first and second components in opposite linear directions so that the first and second components both move toward one another and toward the longitudinal reference axis, wherein the automatically moving occurs after the translating, due to continued moving of the syringe along the longitudinal reference axis of the drive ram, and disposes the first and second components about an exterior of the syringe in a position for the first and second components to restrain movement of the syringe away from the injector housing during movement of the drive ram in the direction of the syringe.

21. The method of claim 20, wherein the linearly translating occurs in a plane substantially perpendicular to the longitudinal reference axis.

22. The method of claim 20, wherein the linearly translating occurs in opposition to a spring force that urges the first and second components toward one another.

23. The method of claim 20, wherein the automatically moving is accomplished due to spring forces biasing the first and second components toward one another and toward the longitudinal reference axis.

24. The method of claim 20, further comprising selectively locking a position of the first and second components relative to the longitudinal reference axis.

25. The method of claim 24, wherein the selectively locking is performed after the moving of the syringe along the longitudinal reference axis of the drive ram and while the syringe is located between the first and second components of the injector.

26. The method of claim 20, further comprising:

expelling contrast media, saline, or a combination thereof from the syringe using the injector.

27. The method of claim 20, wherein the moving the syringe along the sloping surface of the first component and second component occurs while the syringe remains in contact with the sloping surface of each of the first and second components.