Magnetic pressure jacket for fluid injector

Patent metadata

Field	Value
Publication number	US-10888651-B2
Application number	US-201816160389-A
Country	US
Kind code	B2
Filing date	Oct 15, 2018
Priority date	Oct 18, 2013
Publication date	Jan 12, 2021
Grant date	Jan 12, 2021

Abstract

A fluid injector having at least one injector head with a front end configured to releasably receive the at least one syringe is described. The fluid injector further includes at least one pressure jacket releasably associated with the front end of the at least one injector head for securing the at least one syringe during an injection procedure. A connection mechanism releasably connects the at least one pressure jacket to the front end of the at least one injector head. The connection mechanism includes at least one electromagnet.

First claim

We claim:

1. A fluid injector comprising:
at least one injector head having a front end configured to releasably receive at least one syringe;
at least one pressure jacket releasably associated with the front end of the at least one injector head for securing the at least one syringe during an injection procedure; and
a connection mechanism for releasably connecting the at least one pressure jacket to the front end of the at least one injector head,
wherein the connection mechanism comprises at least one electromagnet,
wherein an electromagnetic force of the at least one electromagnet is controlled by a controller of the fluid injector.

2. The fluid injector of claim 1 , wherein the at least one injector head comprises the at least one electromagnet.

3. The fluid injector of claim 2 , wherein the at least one electromagnet is configured to magnetically interact with at least one magnet associated with the at least one pressure jacket.

4. The fluid injector of claim 3 , wherein poles of the at least one electromagnet on the front end of the at least one injector head is opposite to poles of the at least one magnet associated with the at least one pressure jacket.

5. The fluid injector of claim 3 , wherein the at least one magnet associated with the at least one pressure jacket comprises a ferromagnetic material.

6. The fluid injector of claim 1 , wherein the at least one injector head is configured to releasably receive two syringes.

7. The fluid injector of claim 6 , wherein the fluid injector comprises two pressure jackets.

8. The fluid injector of claim 7 , wherein the two pressure jackets comprise a first pressure jacket and a second pressure jacket, wherein a polar arrangement of at least one magnet in the first pressure jacket is opposite the polar arrangement of the at least one magnet in the second pressure jacket, and
wherein the at least one injector head comprises a face plate comprising a first recess and a second recess configured for retaining a first pressure jacket and a second pressure jacket, respectively,
wherein an electromagnet in the first recess are opposite the polarity of an electromagnet in the second recess, such that the at least on magnet of the first pressure jacket is magnetically attracted to the electromagnet of the first recess and not the electromagnet of the second recess, and
the at least on magnet of the second pressure jacket is magnetically attracted to the electromagnet of the second recess and not the electromagnet of the first recess.

9. The fluid injector of claim 1 , further comprising at least one arm pivotally connected at a proximal end to the at least one injector head for retaining a distal end of the at least one pressure jacket, wherein the at least one arm is pivotable between a first position and a second position.

10. The fluid injector of claim 9 , wherein the at least one arm is magnetically retained in the first position.

11. The fluid injector of claim 9 , further comprising a holding bracket pivotally connected to a distal end of the at least one arm for engaging the distal end of the at least one pressure jacket, wherein the holding bracket is pivotable between a first holding bracket position and a second holding bracket position.

12. The fluid injector of claim 9 , wherein the holding bracket is magnetically retained in the first holding bracket position.

13. The fluid injector of claim 11 , wherein the at least one pressure jacket is configured to move axially against a magnetic attractive force between the at least one pressure jacket and the fluid injector while the pressure jacket is still in an engaged position with the fluid injector by the holding bracket.

14. The fluid injector of claim 1 , wherein a controller of the fluid injector is configured to disconnect the electric current to the at least one electromagnet to eliminate an electromagnetic attractive force between the front end of the fluid injector and a proximal end of the at least one pressure jacket to allow disconnection of the at least one pressure jacket from the fluid injector.

15. A pressure jacket for use with a fluid injector, the pressure jacket comprising:
a tubular body having a proximal end and a distal end;
a syringe receiving opening at the proximal end or the distal end configured for receiving a syringe within an interior of the tubular body;
a connection portion with a terminal surface at the proximal end configured for releasably connecting the pressure jacket to the fluid injector; and
at least one magnetic element on at least a portion of the connection portion configured to magnetically interact with an electromagnet on a front end of a head of the fluid injector for releasably connecting the pressure jacket to the fluid injector,
wherein the pressure jacket is made of a ferromagnetic material.

Assignees

• Bayer Healthcare Llc

Inventors

• Dedig James
• Schriver Ralph
• Campbell Patrick
• Grubic Herbert

Classifications

• A61M5/14546 Primary

  Front-loading type injectors · CPC title

• A61M5/14566

  with a replaceable reservoir for receiving a piston rod of the pump · CPC title

• A61M5/20

  Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically (A61M5/142 {, A61M5/46} take precedence; {hypodermic projectiles F42B12/54}) · CPC title

• A61M2005/14553

  comprising a pressure jacket · CPC title

• A61M2005/14573

  with a replaceable reservoir for quick connection/disconnection with a driving system · CPC title