Drive ram for medical injectors
First Claim
1. A drive ram for a medical fluid injector, the drive ram comprising:
- a first gripper member pivotally interconnected with a plunger engaging end of the drive ram, wherein the first gripper member comprises a first end, a second end, and a main body portion between the first and second ends of the first gripper member, wherein the first end of the first gripper member is engageable with a syringe plunger, and wherein the second end of the first gripper member comprises a first aperture and a first raised contact portion;
a second gripper member pivotally interconnected with the plunger engaging end of the drive ram, wherein the second gripper member comprises a first end, a second end, and a main body portion between the first and second ends of the second gripper member, wherein the first end of the second gripper member is engageable with a syringe plunger, and wherein the second end of the second gripper member comprises a second aperture and a second raised contact portion; and
a pivot pin within the first aperture of the first gripper member and the second aperture of the second gripper member;
wherein contact between the first and second gripper members is limited to the respective first and second raised contact portions;
wherein each of the first and second gripper members is pivotable about a common pivot axis that coincides with the pivot pin; and
wherein the first and second gripper members are pivotable between a first position and a second position, the first ends of the first and second gripper members being spaced apart by a first distance when the first and second gripper members are in the first position, and the first ends being spaced apart by a second distance greater than the first distance when the first and second gripper members are in the second position.
6 Assignments
0 Petitions
Accused Products
Abstract
A drive ram (26) for use with a medical fluid injector may include a central, longitudinal reference axis (24). First and second gripper members (92) may be pivotally interconnected with a plunger engaging end (266) of the drive ram. Each of the first and second gripper members may be pivotable about a common pivot axis (95) that intersects the reference axis. Each of the gripper members may further include a first end (102) that is remote from the common pivot axis. In some embodiments, the first and second gripper members may be pivotable between a first position and a second position. In the first position, the first ends of the gripper members may be spaced apart by a first distance, while in the second position, they may be spaced apart by a second distance that is greater than the first distance.
42 Citations
12 Claims
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1. A drive ram for a medical fluid injector, the drive ram comprising:
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a first gripper member pivotally interconnected with a plunger engaging end of the drive ram, wherein the first gripper member comprises a first end, a second end, and a main body portion between the first and second ends of the first gripper member, wherein the first end of the first gripper member is engageable with a syringe plunger, and wherein the second end of the first gripper member comprises a first aperture and a first raised contact portion; a second gripper member pivotally interconnected with the plunger engaging end of the drive ram, wherein the second gripper member comprises a first end, a second end, and a main body portion between the first and second ends of the second gripper member, wherein the first end of the second gripper member is engageable with a syringe plunger, and wherein the second end of the second gripper member comprises a second aperture and a second raised contact portion; and a pivot pin within the first aperture of the first gripper member and the second aperture of the second gripper member; wherein contact between the first and second gripper members is limited to the respective first and second raised contact portions; wherein each of the first and second gripper members is pivotable about a common pivot axis that coincides with the pivot pin; and wherein the first and second gripper members are pivotable between a first position and a second position, the first ends of the first and second gripper members being spaced apart by a first distance when the first and second gripper members are in the first position, and the first ends being spaced apart by a second distance greater than the first distance when the first and second gripper members are in the second position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification