Abstract: An injection device having a drive mechanism to expel selectively a dose of medicament from a medicament cartridge through a needle unit is disclosed. The injection device further comprises an electronic control unit to control the drive mechanism, and a dispense button to generate a dispense button signal to the electronic control unit indicative of the dose to be expelled in which an arm button causes a first arm button signal to be sent to the electronic control unit to permit the dose to be expelled.

Abstract: A method of controlling a medication delivery system is used to deliver medication to a patient. The system includes an electronic controller, at least one control button, a patient label, and a removable overlay label disposed on top of the patient label for controlling an amount of the medication to be delivered to the patient. The method comprises the steps of selecting the amount of the medication in accordance with a first set of explanatory indicia on the removable overlay label; locking the system such that the selected amount of the medication to be delivered to the patient is unable to be modified; removing the removable overlay label to reveal the patient label; and operating the system in accordance with a second set of explanatory indicia on the patient label.

Abstract: A pressure actuated flow control valve for an infusion catheter permits gravity flow of a liquid through the catheter and into a patient while resisting back flow of blood from the patient and into the catheter. The valve has a hemispherical body with an outstanding circumferential flange and a normally closed, diametric slit. The slit is longer on the convex outer surface than on the concave inner surface. Dome thickness diminishes in the area adjacent the slit, reducing total apical deflection upon collapse of the slit toward the concave surface. An inner orthogonal rib biases the slit closed. Upon application of a predetermined pressure, the slit opens toward the concave surface to permit forward fluid flow. At lower pressures, the slit closes to check fluid flow. Greater reverse pressure is required to collapse the slit toward the concave surface to permit reverse fluid flow.

Abstract: A system for delivering ultrasound energy to a treatment section in a vessel is disclosed. The system includes a sheath with a utility lumen and an energy delivery section at least partially constructed from a material which transmits ultrasound energy. The system also includes a drug delivery member having a plurality of drug delivery ports which are positioned adjacent the energy delivery section. The system further includes an elongated body including at least one ultrasound element and configured to be movably positioned within the utility lumen to transmit the ultrasound energy from the ultrasound element through the energy delivery section.