Abstract: A trocar catheter includes a trocar rod having a stepped diameter distal end for use with a catheter having a stepped diameter lumen wherein the trocar is inserted into the lumen of the catheter and the trocar is used to incise a patient and install the catheter after which the trocar is removed from the lumen of the catheter. The distal end of the trocar rod is provided with a stepped coaxial bore into which a piercing point rod, a spring and a safety sleeve are assembled. The piercing point rod has a proximal small diameter portion which is press fit into a correspondingly small diameter portion of the coaxial bore in the distal end of the trocar rod. The spring is carried on the small diameter portion of the piercing point rod and biases the safety sleeve in a distal direction.

Abstract: A unit dosage, packaged for direct administration into a body cavity, is encapsulated in a packet between a pair of leaves of foil. The leaves are sealed to each other about their peripheries. The packet is packaged with a tubular injector having a longitudinal bore extending from the head end of the injector to the tail end. The packet is positioned in the bore adjacent the head end by a annular support member having a central opening in registry with the bore. A plunger is mounted in the bore and has a head adapted to slide in the bore and a tail projecting out of the tail end of the tubular injector, and the tail end of the plunger is used to displace the head of the plunger through the packet, through the opening in the annular support, and beyond the head end of the tubular injector. The head of the plunger is provided with a beveled surface along one side.

Abstract: A syringe has a needle mounted in the lower end of a tubular mount. A protective cover, in the form of a sleeve, fits over this lower end of the tubular mount, and extends to fully cover the sharp end of the needle. The tubular mount has a pair of elongated, axial slots for the entry and exit of a cog or lug on the inside of the sleeve. Pressure on the sleeve slides the lug up the entry slot and exposes the needle. A cross over slot carries the lug to the exit slot, where it slides down to the lower end of the mount, and over a locking ridge to automatically and securely recover the needle. A spring, coupled between the mount and the sleeve has an axial force urging the sleeve down in either slot, and a rotary force urging the cog towards the exit slot. The lug must be in the entry slot to depress and use the needle, but the lug is then rotated to the exit slot and returned by the spring, automatically, to lock the lug in the safe, covering position of the sleeve.

Abstract: An intravascular treatment apparatus provides means for infusing a treatment site with an agent and means for positioning the delivery interface against the treatment site which operate independently of one another. In a preferred embodiment, the apparatus includes a flexible body having a deflectable support frame at its distal end. A plurality of platforms, each comprising a plenum and a delivery interface, is coupled to the support frame. The platforms may be deployed radially from the body by deflecting the support frame using an actuator shaft extending through a passage in the body. The platforms are connected to a supply passage through the body. In this way, the apparatus may be positioned within a body lumen, usually an artery, with the platforms near a treatment site. By actuating the actuator shaft, the platforms are deployed against the treatment site.