Abstract: A catheter hub assembly includes a body. A pressure sensor is disposed within the body to sense pressure within a catheter and communicating with the body. The body has a chamber formed therein having a predetermined volume. A stopper assembly, slideably moves to engage the body forming a gastight seal within the chamber for pushing a column of gas ahead of the stopper assembly as the stopper assembly moves from a first position to a second position.

Abstract: A catheter hub assembly includes a body. A pressure sensor is disposed within the body to sense pressure within a catheter and communicating with the body The body has a chamber formed therein having a predetermined volume. A stopper assembly, slideably moves to engage the body forming a gastight seal within the chamber for pushing a column of gas ahead of the stopper assembly as the stopper assembly moves from a first position to a second position.

Abstract: A catheter hub assembly includes a body. A pressure sensor is disposed within the body to sense pressure within a catheter and communicating with the body The body has a chamber formed therein having a predetermined volume. A stopper assembly, slideably moves to engage the body forming a gastight seal within the chamber for pushing a column of gas ahead of the stopper assembly as the stopper assembly moves from a first position to a second position.

Abstract: A catheter hub assembly includes a body. A pressure sensor is disposed within the body to sense pressure within a catheter and communicating with the body The body has a chamber formed therein having a predetermined volume. A stopper assembly, slideably moves to engage the body forming a gastight seal within the chamber for pushing a column of gas ahead of the stopper assembly as the stopper assembly moves from a first position to a second position.

Abstract: A drug capsule comprises a sleeve forming a side wall of the capsule and having first and second end caps which close the opened ends of the sleeve. The end faces of the end caps are frangible so that they can be ruptured by the open ends of the sleeve by causing the end caps to be displaced along the sleeve towards one another to open the capsule. A dispenser is formed from the combination of the capsule and a pair of elements, each element being adapted to receive a respective one of the end caps so that the capsule interconnects the elements, whereby the capsule can be opened by moving the elements towards one another. One of the elements provides a mouth piece and the other element provides an air flow passageway provided with a turbine to induce turbulence in the air flow through the capsule. The drug capsule and dispenser are primarily intended for administering powdered drugs by inhalation.

Abstract: A nebulizer for use in administering a medicament to a patient undergoing treatment for example, comprises an ultrasonic piezo-electric transducer (60) and a transducer drive system (D) which is caused to drive said transducer at or near its anti-resonant frequency. There is also provided means to optimize nebulized fluid particle size and transfer to the patients lungs for example, by operating at an anti-resonant frequency in the range of 1.36 to 1.56 MHz and having a single outlet baffle and relatively short outlet tube (24) arrangement.