B. Braun Medical Inc.

David J Harrison

Roger J Hill

James H Monti, Jr

Roberta Stavely

Harry C Copp

Joe C Crittendon

A medical tubing and slide clamp set is disclosed for use with a medical infusion pump designed for operation with a preselected medical tubing set having predetermined size and functional characteristics. The medical tubing and slide clamp includes a preselected medical tubing set having predetermined size and function characteristics. An opaque slide clamp is provided with a grasping end and a longitudinal clamp plate extending from the grasping end. The longitudinal clamp plate defines a clamp slot with a wide open portion sized for receiving the preselected medical tubing without closing the tubing, a narrow open portion sized for closing the tubing and a transition portion interconnecting the narrow and wide portions. A plurality of orifices are formed along the longitudinal clamp plate at predetermined locations arranged according to the size and functional characteristics of the medical tubing set. A receptacle formed in a medical pump includes a plurality of light sources and sensors mounted at predetermined positions for sensing the orifices or the absence of orifices to determine whether the size and functional characteristics of the tubing set will are proper for operation in the medical pump.

Medical tubing slide clamp device for determining proper tubing size and functional characteristics

Medical tubing slide clamp device for determining proper tubing size and

A rotation control for a device to be rotated includes a variable speed DC motor having a constant rotational speed upon receiving a selected fixed voltage electrical input power from an adjustable electrical input power supply connected to the motor for supplying the selected fixed voltage. A switch circuit is connected between the motor and the power supply activatable in response to a first electrical signal to turn the motor 'on' and activatable in response to a second electrical signal to turn the motor 'off'. A selectable frequency, regular interval electrical signal device is connected to the switch circuit to provide electrical signals to activate the switch circuit to turn the motor 'on' at regular intervals. An encoder wheel is coupled to the device to be rotated and to the motor for rotation of the timing disk at a speed proportional to the constant rotational speed of the motor. The timing disk has a plurality of openings around the disk with predetermined spacing there between. The spacing corresponds to a desired amount of device rotation. A light sensor is operatively positioned adjacent to the encoder wheel for detecting the spaced openings and connected to the switch circuit to provide the electrical signal to turn the motor off each time a next one of the openings is detected by the sensor thereby allowing the device to traverse the desired amount of device rotation during each regular interval that the motor is turned on.

Volumetric flow equalizing drive control wheel

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Irving, TX, United States of America

David J Harrison