Implantable device

#This invention relates to an implantable device and in particular, to a vascular access device that is implanted subcutaneously.

#Within the prior art, a variety of implantable access devices are known. Typical is the commercially available INFUSAID Infuse-A-Port.TM.. These techniques of providing access via a various implantable device include percutaneous catheters, implantable ports having access to a port at a perpendicular angle to the skin and direct access with a needle. Thus, in the case of the commercially available Infuse-A-Port.TM., a base having an inlet located under the skin having an access outlet perpendicular to the skin line. The catheter thus extends at a right angle to the direction of needle access to the port's inlet.

#Materials which are used in these devices generally include various plastics such as PVC, teflon, polyethylene, polypropylene, polyurethane, polycarbonate, polyethersulfone, polysulfone, polyolefin, nylon and the like. Additionally, silicone rubber, stainless steel and titanium are used.

#FIG. 1 is a schematic perspective view of a first embodiment of an implantable port in accordance with this invention;

#FIG. 2 is a schematic illustration showing the placement of the implantable port of this invention subcutaneously with the catheter extended into a blood vessel;

#FIG. 3 is a schematic cut-away view of a second embodiment of this invention;

#Referring now to FIG. 1, a first embodiment of the implantable port of this invention is illustrated. The port comprises a body member 10 having a self-sealing septum 12 and an outlet connector 14 to which a suitable catheter is mounted. As illustrated in FIG. 1, the port has a generally flat base area 16 with an inclined face 18 into which the septum is placed. The septum provides a small diameter target, typically 0.15-0.20 inches. The overall length of the device from the front face to the tip of the connector is in the range of one inch. The overall height of the device from the flat base 16 to the tapered top portion is at a maximum approximately 0.38 inches. The port and the connector is manufactured from a bicompatible material. Materials of choice for the port are silicone rubber and various plastics such as PVC, teflon, polyethylene, polypropylene, polyurethane, polycarbonate, polyethersulfone, polysulfone, polyolefin, nylon, and the like. The connecter is preferably a metallic member made of stainless steel or titanium. The entire device can be made of one piece, for example a suitable metal.

#As illustrated in FIG. 1, the front face 18 is inclined so that access to the self-sealing septum 12 is axially aligned with the connecter 14. This is in contrast to prior art systems wherein normal access to the septum would be disposed at a right angle, that is perpendicular to the outlet connector to the catheter.

#Given the low profile of the device, implantation in areas with limited subcutaneous tissue such as forearms, scalp and neck area, infants and children and their appendages is possible.