Abstract:
The present invention relates, in part, to sutures which promote wound closure and/or healing. In particular, the present invention provides fibrin microthread sutures that mimic the mechanical behavior of a target tissue thereby reducing, for example, scarring, inflammation, and cell death at the ligature site, including monofilament sutures.
Abstract:
Biodegradable and resorbable polymer pouches are described for use with cardiac rhythm mamagent devices (CRMs) and other implantable medical devices (IMDs), i.e., a pouch, covering, or other receptacle capable of encasing, surrounding and/or holding the CRM or other IMD for the purpose of securing it in position, inhibiting or reducing bacterial growth, providing pain relief and/or inhibiting scarring or fibrosis on or around the CRM or other IMD. Optionally, the biodegradable and resorbable pouches of the invention include one or more drugs in the polymer matrix to provide prophylactic effects and alleviate side effects or complications associated with the surgery or implantation of the CRM or other IMD.
Abstract:
The present invention relates to medical prostheses and methods of manufacturing those devices. In particular, the prostheses are temporarily stiffened meshes with particular coatings to provide initial stiffness and thereby permit easier surgical handling for treatment or reconstruction of soft tissue defects. Preferred embodiments include surgical meshes coated with one or more biodegradable polymers that can act as a stiffening agent by coating the filaments or fibers of the mesh to temporarily immobilize the contact points of those filaments or fibers and/or by increasing the stiffness of the mesh by at least 1.1 times its original stiffness. The devices of the invention can also provide relief from various post-operative complications associated with their implantation, insertion or surgical use. By including biologically active agents and/or drugs in the coating, the devices provide prophylaxis for and can alleviate side effects or complications associated with the surgery or use of prostheses in general.
Abstract:
Biodegradable polymer-coated surgical meshes formed into pouches are described for use with cardiac rhythm management devices (CRMs) and other implantable medical devices. Such meshes are formed into a receptacle, e.g., a pouch or other covering, capable of encasing, surrounding and/or holding the cardiac rhythm management device or other implantable medical device for the purpose of securing it in position, inhibiting or reducing bacterial growth, providing pain relief and/or inhibiting scarring or fibrosis on or around the CRM or other implantable medical device. Preferred embodiments include surgical mesh pouches coated with one or more biodegradable polymers that can act as a stiffening agent by coating the filaments or fibers of the mesh to temporarily immobilize the contact points of those filaments or fibers and/or by increasing the stiffness of the mesh by at least 1.1 times its original stiffness. The pouches of the invention can also provide relief from various post-operative complications associated with their implantation, insertion or surgical use, and, optionally, include one or more drugs in the polymer matrix of the coating to provide prophylactic effects and/or alleviate side effects or complications associated with the surgery or implantation of the CRM or other implantable medical device.
Abstract:
A novel method for reducing an arteriosclerotic lesion is disclosed in which the electromagnetic energy directed at the lesion is selectively absorbed by a lesion component, e.g. cholesterol. The resulting decomposition of said lesion component leads to reduction of the lesion with minimal risk of damage to blood constituents and adjacent healthy blood vessel tissue. Preferably, monochromatic electromagnetic energy is generated by a laser and is conducted to the vicinity of the lesion by at least one optical fiber.
Abstract:
An intra-aortic balloon pump catheter includes an inner lumen formed by a thin walled superelastic metal alloy tube, namely of nitinol, with an inside diameter sufficient for a guidewire and a small outside diameter which allows reduction of the outer lumen and related components by at least one size French while providing gas shuttle capacity between the lumens for conventional intra-aortic balloon pump operation. The outer lumen is a tube formed of co-extruded plastics to enhance the size reduction and capacity goals, with an inner nylon portion for strength and a relatively thin polyurethane outer portion for biocompatability, flexibility and compatibility for bonding to a thin polyurethane balloon. The proximal end sleeve of the balloon is stretched and then stress-relieved by heating with an internal heater on a mounting mandrel to effect a desired small diameter sizing. A radiopaque metal marker ring of nitinol also is provided to improve imaging capabilities while being compatible with the lumen materials.
Abstract:
A dual lumen subclavian cannula is disclosed for use in hemodialysis where the lumens are formed by a septum dividing an essentially circular tube longitudinally. The blood return lumen is closed at its distal end by a blunt point and has openings in its side wall proximal to the point. The blood inlet lumen has an open distal end plus openings in the side wall which are proximal to the analogous openings in the blood return lumen. A manifold at the proximal end of the tube separately distributes blood into the return lumen and collects blood from the inlet lumen.
Abstract:
A system for the hypothermic (2-8° C.) transport of biological samples, such as tissues, organs, or body fluids. The system includes a first transport container to suspend the sample in preservation fluid and provides an ability to monitor the temperature of the sample. The first transport container, holding the sample, is placed in an insulated second transport container having a cooling medium. When assembled, the system allows for transport of biological samples for extended periods of time at a stable temperature.
Abstract:
A system for the hypothermic (2-8° C.) transport of biological samples, such as tissues, organs, or body fluids. The system includes a first transport container to suspend the sample in preservation fluid and provides an ability to monitor the temperature of the sample. The first transport container, holding the sample, is placed in an insulated second transport container having a cooling medium. When assembled, the system allows for transport of biological samples for extended periods of time at a stable temperature.
Abstract:
An electronic surgical probe including an axially elongated member adapted to receive ultrasonic vibrations from an ultrasonic motor or transducer and having a circular cross-section, has a coaxially positioned cannula or sheath surrounding the elongated member, the cannula or sheath defining an aperture adjacent the distal end portion of the elongated member, wherein fluid adjacent the distal end portion of the elongated member is activated or cavitated by ultrasonic vibrations from the distal end of the elongated member and passing through the aperture of the cannula acts upon tissue and/or other matter.