Abstract:
A catheter for providing blood flow includes a wall defining at least one lumen extending between a distal end and a proximal end. The distal end portion of the cathet is deformable to selectively open and close one or more ports in the wall to allow bloo 5 flow into or out of the lumen of the catheter.
Abstract:
An implantable elastomeric article having modified surface characteristics on at least one surface obtained by application of an acid on said at least one surface and after a predetermined treatment time removing the acid by rinsing. The treatment gives the surface an increased roughness that decreases the friction against another object. A method of modifying surface characteristics of at least one surface on an implantable elastomeric article, comprising application of an acid, followed by rinsing. A method of assembly of an implantable electrode lead made of silicone tubing and a spiral conductor, comprising treating the tubing with an acid before inserting the conductor into the tubing.
Abstract:
A laparoscopic port assembly includes a cannula unit including three cannulas each extending at an acute angle relative to a base. The cannulas are flexible for receiving respective angulated laparoscopic instruments. The cannula unit is rotatingly received in a port holder for rotation about a longitudinal axis of the holder, the holder being disposable in an opening in a patient's skin.
Abstract:
A catheter hub is disclosed. The catheter hub includes a first port and a second port fluidly communicating with the first port through a first conduit. The first conduit turns at an angle of greater than approximately 135 degrees between the first port and the second port. The hub also includes a third port fluidly communicating with the second port through a second conduit. The second conduit turns at an angle of greater than approximately 135 degrees between the third port and the second port. Further, the hub includes a fourth port fluidly communicating with the second port. The fourth port and the second port are generally co-axial. A catheter assembly that utilizes the catheter hub is also disclosed.
Abstract:
A device for connecting a fluid conduit to an orifice of a vessel includes a flexible fitting, a deformable fitting, and one or more compression fittings. The flexible fitting can fix a position of the fluid conduit with respect to the orifice of the vessel, and the deformable fitting can provide a fluid seal between the fluid conduit and the orifice of the vessel. A method for connecting a fluid conduit to an orifice of a vessel includes urging a deformable fitting against both a surface of the fluid conduit and the orifice, urging a flexible fitting toward a surface of the fluid conduit, and attaching the flexible fitting to the orifice.
Abstract:
A non-polymeric or biological coating applied to radially expandable interventional medical devices provides uniform drug distribution and permeation of the coating and any therapeutic agents mixed therewith into a targeted treatment area within the body. The coating is sterile, and is capable of being carried by a sterile medical device to a targeted tissue location within the body following radial expansion. The therapeutic coating transfers off the medical device due in part to a biological attraction with the tissue and in part to a physical transference from the medical device to the targeted tissue location in contact with the medical device. Thus, atraumatic local tissue transference delivery is achieved for uniform therapeutic agent distribution and controlled bio-absorption into the tissue after placement within a patient's body with a non-inflammatory coating.
Abstract:
A shunt system quick connector assembly to quickly connect and disconnect a catheter to a hydrocephalus shunt system comprising a valve in a valve housing. The catheter is affixed to the quick connector assembly. The quick connector assembly snaps over an external barb on the valve housing of the shunt system with an audible sound, so that the surgeon knows that connection has been made. The connector assembly can be operated quickly, minimizing the time for the surgical procedure and the opportunity for infection. The connector assembly has smooth surfaces to minimize the growing of tissue into the connection.
Abstract:
A catheter hub is disclosed. The catheter hub includes a first port and a second port fluidly communicating with the first port through a first conduit. The first conduit turns at an angle of greater than approximately 135 degrees between the first port and the second port. The hub also includes a third port fluidly communicating with the second port through a second conduit. The second conduit turns at an angle of greater than approximately 135 degrees between the third port and the second port. Further, the hub includes a fourth port fluidly communicating with the second port. The fourth port and the second port are generally co-axial. A catheter assembly that utilizes the catheter hub is also disclosed.
Abstract:
Catheters having an overmolded hub are disclosed. The overmolded catheter hubs may include one or more access hubs that are overmolded with an overmold material. The catheter hub may also be formed as a single piece from the overmold material. The overmolded construction can result in a stronger bond between the catheter body and the hub and can provide for access hubs having sufficient clarity for the observation of air bubbles in a contained fluid. The disclosed catheter hubs may also demonstrate improved balloon deflation rates when utilized with a catheter body having a distal balloon.
Abstract:
A medical device such as a catheter, stent or balloon, is formed by depositing a radiation curable composition on a form (30) made of ice or wax. The deposited composition may be cured by irradiation, suitably with UV light. Complex structures can be built up if the deposition or curing is achieved imagewise. Compositions which photocure to polyester, polyamide or polyimide may be employed. A particular structure is a balloon for a rapid exchange catheter which has a guide wire lumen (85) passing through the balloon cone walls (86, 87).