Medrad, Inc.

Union Switch & Signal, Inc.

Bayer Medical Care Inc.

Michael J Ehrenberger

Michael A Spohn

John A Haury

James Albert Dedig

Susan Lynn Felix

Gerald W Callan

Thomas P Joyce

Roderick H Beaulieu

Jennie Kwo

Luis Alberto Pedraza

Ralph E Kopacko

William D Barlow

Richard G Critchlow

John D Shearer, Jr

Herb Grubic

Jerry A Stokes

Karen M Zelenski

Anthony S McCoppin

Jonathan Robert Speicher

Christopher Scutt

James M Gimbel

Jared A Sunday

Kenneth M Gottschlich

Mirza Hyder Hussain

Linda M O'Meara

Jack I Wilson

Christopher R Harper

Randall S Mecca

The fluid injector system includes a source of injection fluid, a pump device, and a fluid path set in fluid connection with the source of injection fluid and the pump device. The fluid path set includes a drip chamber including an elongated body having a raised projection from substantially a top end to substantially a bottom end, the elongated body configured to receive and contain the injection fluid. A fluid level sensing mechanism is operably associated with a fluid control device, and includes a support for the drip chamber body, wherein the support is adapted such that the raised projection is in operational contact with a fluid level sensor associated with the support. The fluid level sensing mechanism is operable to transmit ultrasonic or light energy through the raised projection to be sensed by the fluid level sensor for sensing the injection fluid level in the drip chamber.

Drip chamber and fluid level sensing mechanism for a fluid delivery system

The fluid path set is intended for use in a fluid delivery system. The fluid path set includes a multi-patient use section adapted for connection to a syringe used in the fluid delivery system, and to a source of fluid, such as contrast media, to be loaded into the syringe. The fluid path set further includes a per-patient use section that is removably connected to the multi-patient use section. A connector removably connects the multi-patient use section and the per-patient use section. A drip chamber is provided between the source of fluid and the syringe, and includes a projection for determining a level of fluid in the drip chamber. The per-patient use section includes a pressure isolation mechanism. The pressure isolation mechanism includes a lumen, a pressure isolation port, and a valve member with a biasing portion that biases the valve member to a normally open position.

Fluid delivery system, fluid path set, sterile connector and improved drip chamber and pressure isolation mechanism

The fluid delivery system generally includes a source of injection fluid, a pump device a fluid path set disposed between the source of injection fluid and the pump device, and a fluid control device. The fluid path set includes a multi-position valve. The fluid control device is operatively associated with the fluid path set and includes a valve actuator adapted to operate the multi-position valve. The valve actuator is adapted to close the multi-position valve to isolate the pump device from a patient and stop flow of the injection fluid to the patient at substantially any pressure or flow rate generated by the pump device for delivering a sharp bolus of the injection fluid to the patient. The valve actuator is generally adapted to selectively place the pump device in fluid communication with the source of injection fluid for supplying the injection fluid to the pump device and the patient.

Fluid delivery system having a fluid level sensor and a fluid control device for isolating a patient from a pump device

A system and method of communicating via digital radio between a train and a device positioned at the wayside of a railway system, wherein the device detects defects at the wayside and information related to the defects is transmitted from the wayside to the train for display in the locomotive cab. A communications unit having a microprocessor control circuit and a transceiver is electrically coupled, preferably by serial connection, to the defect detector along the wayside. The transceiver of the communications unit is in radio communication with an existing transceiver in the head-of-train (HOT) unit located in the locomotive cab at the head-end of the train. The head-of-train unit has a microprocessor control circuit that drives a display which is preferably alphanumeric, for the purpose of displaying messages related to the defects detected by the defect detector at the wayside, and subsequently transmitted between the transceiver of the communications unit and the transceiver of the HOT unit. In a preferred embodiment, the HOT unit includes recording apparatus for recording the messages displayed and an alarm for notifying an operator that a message is being displayed.

System and method for communicating operational status of a railway

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Pittsburgh, PA, United States of America

Michael J Ehrenberger