摘要:
Methods of making medical devices are disclosed. In some embodiments, a method for welding together two components is described. The two components are non-coaxial and contact one another. A fixture holds the two components in a desired configuration. Electromagnetic radiation is directed at an area where the two components are in contact. The radiation causes the two portions to fuse together. The fixture has an open area or a transmissive material in the path of the electromagnetic radiation so that at least a portion of the radiation impinged up on the two components.
摘要:
Medical device balloons are formed from a tubular parison by a process or apparatus which establishes a controlled location (initiation zone) on the parison where radial expansion is initiated. Initiation within the initiation zone is achieved by heating the parison in that location to a higher temperature than the remainder of the parison for at least a portion of the blowing time. A variety of apparatus configurations are provided, some of which allow for the size and location of the initiation zone to be readily reconfigured. Balloons can also be modified, post-blowing, using heating apparatus and methods described.
摘要:
A catheter assembly comprises at least one catheter shaft and a balloon. The catheter shaft comprises a substantially cylindrical portion and at least one tapered portion. The tapered portion forms an angle with the cylindrical portion of about 1 degree to about 25 degrees. At least one of the waists of the balloon is sealingly engaged to the tapered portion.
摘要:
Medical devices, for example, those that have balloons, and methods of making the devices are described. In some embodiments, a method includes providing a medical balloon having a first cone portion and a body portion, and removing material from an outer surface the body portion of the balloon such that the balloon includes a first region and a second region, the first region being recessed relative to the second region.
摘要:
Medical device balloons are formed from a tubular parison by a process or apparatus which establishes a controlled location (initiation zone) on the parison where radial expansion is initiated. Initiation within the initiation zone is achieved by heating the parison in that location to a higher temperature than the remainder of the parison for at least a portion of the blowing time. A variety of apparatus configurations are provided, some of which allow for the size and location of the initiation zone to be readily reconfigured. Balloons can also be modified, post-blowing, using heating apparatus and methods described.
摘要:
Medical device balloons are formed from a tubular parison by a process or apparatus which establishes a controlled location (initiation zone) on the parison where radial expansion is initiated. Initiation within the initiation zone is achieved by heating the parison in that location to a higher temperature than the remainder of the parison for at least a portion of the blowing time. A variety of apparatus configurations are provided, some of which allow for the size and location of the initiation zone to be readily reconfigured. Balloons can also be modified, post-blowing, using heating apparatus and methods described.
摘要:
For a client seeking network resources from a network site, such as a web page, audio, visual, or other data, where the network site's desired network resources are also provided by mirroring network hosts, measurements are made to determine a communication efficiency between the client and the network site and mirroring network hosts. The client is then directed to communicate with the network site or a mirroring network host according to which had the highest measured communication efficiency with the client. In such fashion, real time adjustments can be made so as to more optimally distribute client network resource requests across all available sources of the desired network resources, and provide for real time load balancing and fail over of disabled hosts.
摘要:
The present invention generally relates to the field of intravascular medical devices, and more specifically to the field of balloon catheters and other similar diagnostic or therapeutic catheters within the body for treatment and diagnosis of diseases. In particular, the present invention relates to reinforced balloon catheters and drug-eluting balloon catheters and corresponding methods for producing same.
摘要:
A laser shock peening process for producing one or more compressive residual stress regions in a medical device is disclosed. A high-energy laser apparatus can be utilized to direct an intense laser beam through a confining medium and onto the target surface of a workpiece. An absorption overlay disposed on the target surface of the workpiece absorbs the laser beam, inducing a pressure shock wave that forms a compressive residual stress region deep within the workpiece. Medical devices such as stents and guidewires having one or more of these compressive residual stress regions are also disclosed.