DISPENSING AND ASPIRATING SYSTEM INCLUDING A SYRINGE HOLDING AND ACTUATION DEVICE

摘要

The present invention provides actuation mechanisms that incorporate a transmission assembly that allows the mechanisms to cause actuation of workpieces according to a plurality of transmission modes (e.g., at least one forward transmission mode and at least one reverse transmission mode) on demand. Motion, direction, and/or force can be controlled by selecting the corresponding transmission mode. The mechanisms preferably are trigger-actuated by hand (i.e., manually) to cause movement of a workpiece in a desired direction. Desired directions can be linear or nonlinear. The same hand used for trigger action can also be used to change transmission modes in many modes of practice, even while using substantially the same grip used for trigger actuation. In other instances, actuation can be automated rather than manual. Preferably, both actuation and witching among transmission modes can be accomplished with one hand, even while maintaining substantially the same grip that is used for actuation.

主权项

1. A syringe actuation system for actuation of a syringe, comprising:
a syringe comprising a plunger and a syringe body, said system comprising:
i. a first portion that holds the plunger;ii. a second portion that holds the syringe body, wherein the first and second portions are moveable relative to each other such that the plunger can be moved into and pulled from the syringe body;iii. an actuation mechanism coupled to at least one of the first and second portions, wherein actuation of the mechanism causes relative motion between the first and second portions; andiv. a transmission coupled to at least one of the first and second portions and to the actuation mechanism, said transmission comprising:
1. a first transmission mode that causes relative movement of the first and second portions in a manner effective to cause the plunger to be moved into the syringe body when the actuation mechanism is actuated;2. a second transmission mode that causes relative movement of the first and second portions to cause the plunger to be pulled from the syringe body when the actuation mechanism is actuated; and3. a clutch system comprising a first configuration that causes the transmission to be in the first transmission mode and a second configuration that causes the transmission to be in the second transmission mode, wherein the clutch system comprises a rotatable shaft having an axis of rotation, wherein rotation of the shaft causes relative movement of the first and second portions in the first and second transmission modes, and wherein the shaft is shiftable along the axis of shaft rotation in a manner such that shifting the shaft along the axis of shaft rotation shifts the transmission between the first and second transmission modes on demand.