Potentiometer-controlled fluid ejection device

Details Potentiometer-controlled fluid ejection device Potentiometer-controlled fluid ejection device

1997-02-14

1999-04-13

Coggins, Wynn Wood

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604153, 604154, A61M 3700

Patent

active

058938435

ABSTRACT:
A potentiometer-controlled electromechanic system to eject fluids by squeezing flexible plastic containers. The system comprises an electromechanic driving set, including an electric motor-driven shaft with a worm gear engaged to rack gear sections of arms attached to a movable presser plate, that squeeze a fluid-containing flexible plastic bag inserted in a cavity formed at the front portion of the device housing. The cavity is formed by a movable presser plate and a fixed clear and transparent front plate, bent at its sides. The fluid ejection parameters are controlled by an electronic set comprising a precision potentiometer attached to the motor-driven shaft, linked to a microprocessor-based electronic circuitry and a programming set formed by a series of buttons for entering the required ejection parameters, such as fluid flow rate, pressure, ejected volume, etc. The parameters are visualized in a liquid-crystal display. During the ejection procedure, the motor-driven shaft speed is monitored by the precision potentiometer, whose electric impulses are compared, at the central processing unit, to the entered required parameters. The central processing unit calculates the needed electric motor torque and rotation speed and the operating time. The device is applicable to medical uses, to inject fluids contained in flexible plastic bags into a patient, at precisely controlled parameters, as well as other non-medical applications.

REFERENCES:
patent: 2761445 (1956-09-01), Cherkin
patent: 4033479 (1977-07-01), Fletcher et al.
patent: 4155362 (1979-05-01), Jess
patent: 4337769 (1982-07-01), Olson
patent: 4346705 (1982-08-01), Pekkarinen et al.
patent: 4479760 (1984-10-01), Bistad et al.
patent: 4626243 (1986-12-01), Singh et al.
patent: 4650469 (1987-03-01), Berg et al.
patent: 4718576 (1988-01-01), Tamura et al.
patent: 4919649 (1990-04-01), Timothy et al.
patent: 5000739 (1991-03-01), Kulisz et al.
patent: 5078682 (1992-01-01), Miki et al.
patent: 5127908 (1992-07-01), Walker et al.
patent: 5167633 (1992-12-01), Mann et al.
patent: 5207645 (1993-05-01), Ross et al.
patent: 5232439 (1993-08-01), Campbell et al.
patent: 5248300 (1993-09-01), Bryant et al.
patent: 5281202 (1994-01-01), Weber et al.
patent: 5308333 (1994-05-01), Skakoon
patent: 5318540 (1994-06-01), Athayde et al.
patent: 5330431 (1994-07-01), Herskowitz
patent: 5342313 (1994-08-01), Campbell et al.
patent: 5348539 (1994-09-01), Herskowitz
patent: 5411482 (1995-05-01), Campbell
patent: 5423747 (1995-06-01), Amano
patent: 5423759 (1995-06-01), Campbell
patent: 5578001 (1996-11-01), Shah

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