Actuating mechanism for fluid displacement and pressurizing device
AssigneeAtrion Medical Products, Inc.
InventorsRowland W. Kanner, Richard M. Davis, Brian A. Roberts
Life of this patent
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Abstract
A fluid displacement device, particularly for use of the device to pressurize balloon catheters, or the like. The device includes a plunger which is displaceable through a housing, and an actuating mechanism which engages the plunger. The actuating mechanism includes a nut member that is biased into engagement with a threaded portion of the plunger. The device has a press-to-release feature wherein the plunger is instantly releaseable by simply depressing a control surface to overcome a restorative spring force. Subsequently, the plunger can be translated using macro movements (i.e., by pushing or pulling the plunger).
Claims20
A toggle locking mechanism for a fluid displacement device which has a housing and a plunger which extends into the housing, said toggle locking mechanism having a link configured to provide a biasing force to pull the mechanism into a self-locked condition by drawing a locking member tightly against the link that provides the biasing force.
An actuating mechanism on a fluid displacement device which has a housing and a plunger which extends into the housing, said actuating mechanism comprising a nut member which is biased into engagement with the plunger, but which is selectively disengageable with the plunger.
A method of assembling a fluid displacement device which has a plunger, said method comprising:
- assembling an actuating mechanism by securing a unitary link to a nut member;
- securing the actuating mechanism to the fluid displacement device;
- actuating the actuating mechanism;
- sticking the plunger through the actuating mechanism;
- and de-actuating the actuating mechanism, wherein the nut member engages the plunger.
Dependencies are inferred from the claim text.