Injector system having a front loading pressure jacket assembly

• US 7,081,105 B2
• Filed: 08/05/2004
• Issued: 07/25/2006
• Est. Priority Date: 08/17/1992
• Status: Expired due to Fees

• Current Assignee: Medrad Incorporated (Bayer AG)
• Original Assignee: Medrad Incorporated (Bayer AG)
• Inventors: Reilly, David M., Gelblum, Eugene A.
• Primary Examiner(s): RODRIGUEZ, CRIS LOIREN
• Application Number:
  US10/911,863
• Publication Number:
  US 20050059932A1
• Time in Patent Office: 719 Days
• Field of Search: 604/187, 604/181, 604/218, 604/224, 604/235, 604/227, 604/403, 604/131, 604/68, 604/72, 604/903, 604/154, 604/152, 128/DIG.1, 222325-327, 222/390, 222/386, 222/465.1, 215/305, 215/295, 215/48
• US Class Current: 604/152
• CPC Class Codes: A61M 2005/14553 comprising a pressure jacket
• CPC Class Codes: A61M 2205/581 by audible feedback
• CPC Class Codes: A61M 2205/582 by tactile feedback
• CPC Class Codes: A61M 2205/583 by visual feedback
• 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: Y10S 128/01 Motorized syringe

Abstract

An injector system includes an injector and a syringe. The injector includes a housing having a front wall, a drive member moveable through the front wall of the housing, and a pressure jacket assembly for operably associating the syringe with the housing. The pressure jacket assembly includes a rearward end mounted on the front wall of the housing and a forward open end for receiving the syringe therethrough. The syringe includes a body having a main section, a conical section in fluid communication with the main section and a fluid discharge section in fluid communication with the conical section. The syringe further includes a plunger movably disposed in the body. The plunger includes one or more hook members extending rearward from the plunger for connecting the plunger to the drive member of the injector. The syringe also includes a protrusion for facilitating handling of the syringe. Preferably, the protrusion is operably associated with and extends forwardly from the conical section of the body.

Claims

1. An injector system comprising:

a syringe for holding a liquid medium and;

an injector comprising;

a housing having a front wall;

a drive member moveable through the front wall of the housing; and

a pressure jacket assembly for operabiy associating the syringe with the housing, the pressure jacket assembly comprising;

a rearward end mounted on the front wall of the housing;

a forward open end for receiving the syringe therethrough such that the syringe is loaded into the pressure jacket assembly via the forward open end; and

a first retaining member mounted on an inside surface of the pressure jacket assembly adjacent the forward open end thereof; and

the syringe comprising;

a body comprising a main section, a conical section in fluid communication with the main section and a fluid discharge section in fluid communication with the conical section;

a plunger movably disposed in the body, the plunger comprising one or more hook members extending rearward from the plunger for connecting the plunger to the drive member of the injector;

at least one handle portion for facilitating handling of the syringe, the at least one handle portion operably associated with and extending forwardly from the conical section of the body; and

a second retaining member on the syringe and engageable with the first retaining member, the first and second retaining members cooperating to retain the syringe inside the pressure jacket.

2. The injector system of claim 1 wherein the first retaining member comprises flanges formed on the pressure jacket assembly and defining slots therebetween and the second retaining member comprises flanges adapted to be inserted through the slots, the flanges of the second retaining member forming an interference fit with the flanges of the first retaining member when the second retaining member is rotated with respect to the pressure jacket assembly.

3. The injector system of claim 1 wherein the at least one handle portion is integrally formed with the conical section.

4. The injector system of claim 1 wherein the at least one handle portion extends forwardly along the fluid discharge section.

5. The injector system of claim 1 wherein the at least one handle portion comprises two handle portions.

6. An injector system comprising:

a syringe for holding a liquid medium, and

an injector comprising;

a housing having a front wall;

a drive member moveable through the front wall of the housing; and

a pressure jacket assembly for operably associating the syringe with the housing, the pressure jacket assembly comprising;

a rearward end mounted on the front wall of the housing; and

a forward open end for receiving the syringe therethrough such that the syringe is loaded into the pressure jacket assembly via the forward open end; and

the syringe comprising;

a body comprising a main section, a conical section in fluid communication with the main section and a fluid discharge section in fluid communication with the conical section;

a plunger movably disposed in the body, the plunger comprising one or more hook members extending rearward from the plunger for connecting the plunger to the drive member of the injector; and

at least one protrusion for facilitating positioning of the syringe within the pressure jacket assembly, the at least one protrusion operably associated with and extending forwardly from the conical section of the body.

7. The injector system of claim 6 further compnsing a first retaining member mounted on an inside surface of the pressure jacket assembly adjacent the forward open end thereof, and a second retaining member on the syringe and engageable with the first retaining member, the first and second retaining members cooperating to retain the syringe inside the pressure jacket assembly.

8. The injector system of claim 7 wherein the first retaining member comprises flanges formed on the pressure jacket assembly and defining slots therebetween, the second retaining member comprises flanges adapted to be inserted through the slots, the flanges of the second retaining member forming an interference fit with the flanges of the first retaining member when the second retaining member is rotated with respect to the pressure jacket assembly.

9. The injector system of claim 6 wherein the at least one protrusion is integrally formed with the conical section.

10. The injector system of claim 6 wherein the at least one protrusion extends forwardly along the fluid discharge section.

11. The injector system of claim 6 wherein the at least one protrusion comprises two protrusions.

12. The injector system of claim 6 wherein the pressure jacket assembly is tubular.

13. The injector system of claim 6 wherein the at least one protrusion is loop-shaped.

14. An injector system comprising:

a syringe for holding a liquid medium, and

an injector comprising;

a housing having a front wall;

a drive member moveable through the front wall of the housing; and

a pressure jacket assembly for operably associating the syringe with the housing, the pressure jacket assembly comprising;

a rearward end mounted on the front wall of the housing;

a forward open end for receiving the syringe therethrough; and

a flange mounted on an inside surface of the pressure jacket assembly adjacent the forward open end thereof; and

the syringe comprising;

a body comprising a main section, a conical section in fluid communication with the main section and a fluid discharge section in fluid communication with the conical section;

a plunger movably disposed in the body, the plunger comprising one or more hook members extending rearward from the plunger for connecting the plunger to the drive member of the injector;

at least one handle portion for facilitating handling of the syringe, the at least one handle portion operably associated with and extending forwardly from the conical section of the body; and

a second flange adapted to be inserted through slots of the pressure jacket assembly, the flanges forming an interference fit when the second flange is rotated with respect to the pressure jacket assembly.

15. The injector system of claim 14 wherein the at least one handle portion is integrally formed with the conical section.

16. The injector system of claim 14 wherein the at least one handle portion extends forwardly along the fluid discharge section.

17. The injector system of claim 14 wherein the at least one handle portion comprises two handle portions.

18. The injector system of claim 14 wherein the pressure jacket assembly is tubular.

19. The injector system of claim 14 wherein the at least one handle portion is loop-shaped.

20. An injector system comprising:

a syringe for holding a liquid medium, and;

an injector comprising;

a housing having a front wall;

a drive member moveable through the front wall of the housing; and

a pressure jacket assembly for operably associating the syringe with the housing, the pressure jacket assembly comprising;

a rearward end mounted on the front wall of the housing;

a forward open end for receiving the syringe therethrough; and

a first retaining member mounted on an inside surface of the pressure jacket assembly adjacent the forward open end thereof;

the first retaining member comprising flanges formed on the pressure jacket assembly and defining slats therebetween and

the syringe comprising;

a body comprising a main section, a conical section in fluid communication with the main section and a fluid discharge section in fluid communication with the conical section;

a plunger movably disposed in the body, the plunger comprising one or more hook members extending rearward from the plunger for connecting the plunger to the drive member of the injector;

at least one handle portion for facilitating handling of the syringe, the at least one handle portion operably associated with and extending forwardly from the conical section of the body; and

a second retaining member on the syringe and engageable with the first retaining member and cooperating with the first retaining member to retain the syringe inside the pressure jacket, the second retaining member comprising flanges adapted to be inserted through the slots of the first retaining member, the flanges of the second retaining member forming an interference fit with the flanges of the first retaining member when the second retaining member is rotated with respect to the pressure jacket assembly.

21. An injector system comprising:

a syringe for holding a liquid medium, and

an injector comprising;

a housing having a front wall;

a drive member moveable through the front wall of the housing; and

a pressure jacket assembly for operably associating the syringe with the housing, the pressure jacket assembly comprising;

a rearward end mounted on the front wall of the housing;

a forward open end for receiving the syringe therethrough; and

a first retaining member mounted on an inside surface of the pressure jacket assembly adjacent the forward open end thereof the first retaining member comprising flanges formed on the pressure jacket assembly and defining slots therebetween

the syringe comprising;

a body comprising a main section, a conical section in fluid communication with the irwin section and a fluid discharge section in fluid communication with the conical section;

a plunger movably disposed in the body, the plunger comprising one or more hook members extending rearward from the plunger for connecting the plunger to the drive member of the injector;

a second retaining member on the syringe and engageable with the first retaining member, the first and second retaining members cooperating to retain the syringe inside the pressure jacket assembly, the second retaining member comprises flanges adapted to be inserted through the slots of the first retaining member, the flanges of the second retaining memberforming an interference fit with the flanges of the first retaining member when the second retaining member is rotated with respect to the pressure jacket assembly, and

at least one protrusion for facilitating positioning of the syringe within the pressure jacket assembly, the at least one protrusion operably associated with and extending forwardly from the conical section of the body.