A variable volume infusion port is provided. The infusion port may include a port body having an internal fluid reservoir, a septum, a stem to fluidly couple to a catheter lumen, and a displaceable member disposed in the internal fluid reservoir. In a first position, the displaceable member is disposed proximate the septum, providing a relatively small fluid volume within the infusion port. Insertion of an injection device through the septum causes the displaceable member to move to a second location distal from the septum, providing a relatively large fluid volume within the infusion port for the duration the injection device remains in the infusion port. The displaceable member may include a rigid member operably coupled to a biasing element or a flexible member coupled to a biasing element.

A cannulation chamber is provided for use with an arteriovenous graft including a flexible conduit. The cannulation chamber comprises an elongated body defining an annular passageway having a longitudinal axis extending between a first end and a second end. The body receives and surrounds the conduit in the passageway. The body comprises a self-sealing material and a cannulation port that exposes the self-sealing material. A flexible resilient elongated back plate is embedded in the body of the cannulation chamber such that the back plate extends generally parallel with and may partially surround the passageway. The back plate is formed of a substantially rigid material such that when a needle is inserted through the cannulation port and the self-sealing material, the needle is inhibited or prevented from extending through the back plate.

An implantable vascular access port for providing repeated therapy to a patient in need of such therapy, the access port, upon repeated use, presents each time an access needle at a new location so as to minimize scarring injury to the skin of the patient. The vascular access port may include a body, a cover comprising a plurality of openings, at least one needle comprising a tip and a shaft, the shaft defining a lumen, a needle elevator mechanism to operate the position of the at least one needle in at least a retracted position in which the at least one needle is disposed in the body and the needle tip below the cover and an extended position in which the at least one needle is engaged through at least a first one of the openings, and a needle shift mechanism to move the at least one needle from a first position in which the needle can engage the at least a first one of the openings, to a second position in which the needle can engage at least a second one of the openings.

A tissue expander having an integrated drain includes an outer shell having an opening and one or more drainage holes. An injection port is disposed in the opening of the shell and forms a fluid-tight seal with the shell. The injection port includes a needle guard having a needle guard base with a top surface, and a barrier membrane that overlies the top surface of the needle guard base. The barrier membrane defines an inflation chamber located between the top surface of the needle guard base and a bottom surface of the barrier membrane, and a drainage chamber overlying a top surface of the barrier membrane. The tissue expander includes one or more inflation ports that are in fluid communication with the inflation chamber for inflating and deflating the outer shell with a first fluid. A drainage conduit is in fluid communication with and extends between the drainage chamber and the one or more drainage holes for draining a second fluid from outside the shell.

Apparatus and methods for controlled arterial/venous access are provided. The apparatus and methods may include a section of tubing anastomosed to a bodily lumen. A lumen clamping means may utilize a clamp manipulator to effectively seal the tubing, and the manipulator may be operated by two fingers. A needle receptor may be utilized, and the receptor may utilize a rotating member to guide a needle inserted from outside the body, in order ensure accurate placement into a channel. The channel may be in liquid communication with the tubing. The manipulator and the needle receptor may be palpable from outside the body.

Embodiments of the present disclosure provide a system and method configured to provide feedback to a user during a refill procedure for an implantable medical device via an external refilling apparatus through the use of resilient tactile feedback element within the refill port chamber that provides tactile feedback to a user of a refill needle of a location of the needle within the refill port.

Dural repair devices that are configured to effectively and reliably repair the damage of a dural tear due to incidental durotomies are provided, along with methods of use. The devices and methods enhance the ability of a surgeon to repair a patent's dura mater, or dura, during surgery of the central nervous system. The dural repair device has a multi-layer structure configured to exert a pressure or tamponade effect to compress a patient's dura to its state prior to the spinal surgery. Thus, the dural repair devices and methods of use may reduce the patient's risk morbidity, further surgery, spinal headaches, or other injuries and discomforts.

A venous access port assembly having a housing base with a discharge stem, a cap, and an interior reservoir. The port assembly is provided with X-ray discernable indicia to identify an attribute of the assembly after its implantation and clearly appear on an X-ray of the patient in a manner informing the radiologist or technologist and the medical practitioner of that particular attribute. The indicia are cuts in a reservoir lining of radiopaque material such as metal where the cuts having narrow slot width are in the form of one or more sets of alphabetical letters such as “CT” in the lining's side wall or bottom wall.

An apparatus for delivery of a vascular arteriovenous graft comprises a tubular sleeve defining an interior lumen adapted for being slidably positioned over a tunneling instrument. Once the tunneling instrument has been advanced to a desired subcutaneous anatomical location the shaft is removed while the sleeve remains in the tissue. The sleeve has a linear slit extending from a proximal end to a point intermediate the length of the sleeve. The lumen receives the distal end of the graft and at least a portion of a cannulation chamber such that the end of the sleeve progressively expands along the slit to provide an enlarged diameter for accommodating the cannulation chamber. Longitudinal force to the sleeve during removal of the sleeve from the tissue secures the graft in the sleeve by radial compression of the sleeve for pulling the graft and the sleeve through the tunnel and deploying the vascular graft.

A first connector part (110) for establishing a fluid connection with a second connector part comprises a valve (111) with a valve seat (112), the valve seat comprising a valve chamber (116) and a circular opening with a circumferential sealing lip (114); a valve member (113), the valve member being provided in the valve chamber, and being able to sealingly close the circular opening of the valve seat when being pushed against the circular opening; and a resilient element (115) that subjects the valve member to a bias force pushing the valve member against the circular opening of the valve seat. The valve member further comprises a circumferential wall around the circular opening, located on a side of the circular opening opposite to the valve chamber. The circumferential wall forms a concave receptacle (118) for receiving a right circular truncated cone of the second connector part, the concave receptacle having a shape of a truncated cone and facing away from the valve chamber, the circular opening being located in a center of the concave receptacle. The second connector part (150) for establishing the fluid connection with the first connector part comprises the right circular truncated cone (151) for being received in the concave receptacle of the first connector part; a recess (153) at a tip of the right circular truncated cone for actuating the valve member of the first connector part; and a fluid feed conduit (152). The fluid feed conduit has one or more outlets (154) opening at least partially toward a shell surface of the right circular truncated cone (151).