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Exchangeable delivery system for expandable prosthetic devicesExchangeable delivery system for expandable prosthetic devices description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20090182410, Exchangeable delivery system for expandable prosthetic devices. Brief Patent Description - Full Patent Description - Patent Application Claims
This application is a continuation of U.S. patent application Ser. No. 11/139,930, filed on May 27, 2005, currently pending, which claims priority to U.S. Provisional Application Ser. No. 60/575,475, filed on May 28, 2004. The entire disclosure of each of these related applications is hereby incorporated into this disclosure. The invention relates to delivery systems for placement of expandable prosthetic devices within a body vessel. Minimally invasive medicine, the practice of gaining access to a body vessel, duct, or organ using a wireguide to facilitate the subsequent introduction of other medical devices, has been evolving since the Seldinger technique was first popularized during the late 1950s and 1960s. The ability to exchange medical devices over a single indwelling wireguide without requiring displacement of the wireguide from the treatment site provided a significant advance. Using an “over the wire” exchange technique, a user could remove one medical device from the treatment site and advance another medical device to the site without losing access to the site provided by the wireguide. This technique provided greater control over positioning of medical devices and introduced efficiencies to minimally invasive treatment techniques. “Over the wire” exchange techniques require the use of long wireguides because the user must be able to maintain control of the wireguide, independent of the device over the wireguide, at all times during an exchange. As a result, extremely long wireguides are typically used. For most techniques, a wireguide with a length that is at least double the length of the device being placed over the wire is used. These long wireguides may be viewed as cumbersome by some users. The development of rapid exchange delivery systems and techniques allowed the use of shorter wireguides. In these systems, the wireguide and medical device, such as a catheter, are coupled to each other only along a portion of the length of the medical device. The wireguide exits a passageway of the medical device at a point between the proximal and distal end of the medical device via a port formed in a wall of the device. This allows the user to control the proximal end of the wireguide while removing a medical device placed along the wireguide. During removal, the coupled portion of the wireguide travels along the length of the wireguide, ultimately exiting the patient. At this point, the user can exchange medical devices by simply pulling the proximal end of the wireguide through the relatively short wireguide lumen of the device, and subsequently pass the proximal end of the wireguide through the wireguide lumen of a second medical device. Finally, the second device is advanced along the wireguide to the point of treatment. During the exchange, the wireguide position within the body vessel is maintained even though a relatively short length of wireguide extends outside of the patient. Rapid exchange delivery systems and techniques have proven particularly desirable in coronary medicine where it is common for a sequence of procedures using multiple catheter-based devices to be performed over a single wireguide. For example, it is common to place multiple balloon-expandable stents in a body vessel following angioplasty. Rapid exchange delivery systems and techniques allow the placement of multiple stents without requiring withdrawal and replacement of the wireguide and without requiring the use of relatively long wireguides. Self-expandable prosthetic devices are frequently used in a variety of treatment procedures. For example, prosthetic devices are frequently used in a variety of treatment procedures. For example, self-expandable stents are used to provide support to various vessels and ducts in the gastrointestinal system. Also, some prosthetic valves, including prosthetic venous valves, include a self-expandable support frame. In some circumstances, it may be desirable to place multiple self-expandable prosthetic devices in one or more body vessels using a single wireguide. Accordingly, there is a need for exchangeable delivery systems and methods for self-expandable prosthetic devices. Despite these and other examples, a need remains for improved implantable valve devices, methods of making such devices, and methods of treating various venous-related conditions, disorders and/or diseases. The invention provides delivery systems for placing self-expandable prosthetic devices within a body vessel. In one exemplary embodiment, a delivery system according to the invention comprises an elongate tubular member defining a passageway extending between proximal and distal ends. A distal tip member defines a second passageway extending between its proximal and distal ends. The proximal end of the distal tip member defines a proximal surface and is slideably disposed within the passageway of the elongate tubular member. A pusher is disposed within the passageway of the elongate tubular member and is adapted to interact with the proximal surface of the distal tip member. The delivery system also includes a means for retaining the proximal end of the distal tip member within the passageway of the elongate tubular member. The invention also provides methods of making delivery systems. The invention also provides methods of placing one or more self-expandable prosthetic devices within a body lumen. The methods of placing can include an exchange of one delivery system or component thereof for another on a previously placed wireguide. The methods of placing can be used to place multiple self-expandable prosthetic devices within a body vessel at one or more points of treatment. In one exemplary embodiment of the invention, one delivery system is exchanged for another over a previously placed wireguide to place multiple prosthetic valves within a vein of a patient. The reader can gain additional understanding of the invention by reviewing the following description of exemplary embodiments of the invention with reference to the appended drawings. Continue reading about Exchangeable delivery system for expandable prosthetic devices... Full patent description for Exchangeable delivery system for expandable prosthetic devices Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Exchangeable delivery system for expandable prosthetic devices patent application. 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Each week you receive an email with patent applications related to your keywords. Start now! - Receive info on patent apps like Exchangeable delivery system for expandable prosthetic devices or other areas of interest. ### Previous Patent Application: Biodegradable self-expanding drug-eluting prosthesis Next Patent Application: Luer or clamp-type suture release apparatus and method for loading and delivering a stent Industry Class: Prosthesis (i.e., artificial body members), parts thereof, or aids and accessories therefor ### FreshPatents.com Support Thank you for viewing the Exchangeable delivery system for expandable prosthetic devices patent info. IP-related news and info Results in 2.28284 seconds Other interesting Feshpatents.com categories: Daimler Chrysler , DirecTV , Exxonmobil Chemical Company , Goodyear , Intel , Kyocera Wireless , paws |
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