System and method for fluid engagement with a pressure jacket and syringe cap

Patent metadata

Field	Value
Publication number	US-11291766-B2
Application number	US-201615769550-A
Country	US
Kind code	B2
Filing date	Oct 28, 2016
Priority date	Oct 28, 2015
Publication date	Apr 5, 2022
Grant date	Apr 5, 2022

Abstract

A pressure jacket for use with a fluid injector may have a pressure jacket body having a proximal end, a distal end, and a circumferential sidewall extending between the proximal end and the distal end along a pressure jacket longitudinal axis. The pressure jacket may further have at least one resiliently deflectable retaining member having a first segment attached to the pressure jacket body and a second segment protruding from the first segment toward the distal end of the pressure jacket body and deflectable relative to the first segment. The pressure jacket may further have at least one actuation member associated with the at least one resiliently deflectable retaining member. The at least one actuation member may interact with a housing of the fluid injector when the pressure jacket is connected to the housing to deflect the at least one resiliently deflectable retaining member upon rotation of the pressure jacket.

First claim

We claim:

1. A pressure jacket for use with a fluid injector and syringe, the pressure jacket comprising:
a pressure jacket body having a proximal end, a distal end, and a circumferential sidewall extending between the proximal end and the distal end along a longitudinal axis of a pressure jacket;
at least one resiliently deflectable retaining member having a first segment attached to the pressure jacket body near the proximal end and a second segment protruding from the first segment toward the distal end of the pressure jacket body and deflectable radially outward relative to the first segment from an undeflected position to a radially deflected position; and
at least one actuation member associated with the at least one resiliently deflectable retaining member,
wherein the second segment is closer to the longitudinal axis of the pressure jacket in the undeflected position than in the radially deflected position, and
wherein the at least one actuation member interacts with a housing of the fluid injector when the pressure jacket is connected to the housing to deflect the at least one resiliently deflectable retaining member radially outward to the radially deflected position upon rotation of the pressure jacket relative to the housing during disengagement of the pressure jacket from the housing of the fluid injector.

2. The pressure jacket according to claim 1 , further comprising at least one alignment member associated with the proximal end of the pressure jacket body or the at least one resiliently deflectable retaining member, the at least one alignment member having an alignment surface for guiding the housing of the fluid injector into self-orienting alignment with the pressure jacket during engagement of the pressure jacket with the housing of the fluid injector.

3. The pressure jacket according to claim 2 , wherein the at least one alignment member comprises a plurality of alignment members spaced apart around a circumference of the circumferential sidewall of the proximal end of the pressure jacket body.

4. The pressure jacket according to claim 3 , wherein the plurality of alignment members are spaced apart at equal radial intervals around the circumference of the circumferential sidewall of the proximal end of the pressure jacket body.

5. The pressure jacket according to claim 1 , wherein the second segment of the at least one resiliently deflectable retaining member is deflectable radially relative to the first segment away from the pressure jacket longitudinal axis.

6. The pressure jacket according to claim 1 , wherein the at least one resiliently deflectable retaining member is linearly or curvilinearly contiguous between the first segment and the second segment.

7. The pressure jacket according to claim 1 , wherein the second segment of the at least one resiliently deflectable retaining member is angled toward the longitudinal axis of the pressure jacket.

8. The pressure jacket according to claim 1 , wherein the at least one actuation member is provided on a surface of the at least one resiliently deflectable retaining member.

9. The pressure jacket according to claim 8 , wherein the at least one actuation member is at the second segment of the at least one resiliently deflectable retaining member.

10. The pressure jacket according to claim 1 , wherein the at least one actuation member is angled relative to a plane defined by a body of the at least one resiliently deflectable retaining member.

Assignees

• Bayer Healthcare Llc

Inventors

• Swantner Michael J
• Seman Richard A
• Tucker Barry L
• Uber Iii Arthur E
• Cowan Kevin P
• Dedig James A
• Capone Christopher D

Classifications

• A61M2205/332

  Force measuring means · CPC title

• A61M5/31515

  Connection of piston with piston rod · 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

• A61M5/14566

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