摘要:
Catheters, balloons, and methods of manufacturing balloons for balloon catheters using lasers are disclosed. A catheter with a shaft sized for use with a 0.014 inch guide wire includes a polymeric balloon having a body portion with an inflated outer diameter of more than 6 millimeters. An inflatable balloon includes an inflated outer diameter to inner waist diameter ratio of 12.5 to 1. An inflatable polymeric balloon that has a body portion with two regions that have different molecular orientations is also provided. A method of processing an elongate polymeric material includes heating a portion of the polymeric material with a laser while longitudinally stretching the portion of the polymeric material. A method of manufacturing a balloon includes heating and longitudinally stretching a first and second portion of an elongate polymeric tube to form first and second end portion. The remaining body portion is radially expanded to form the balloon.
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:
Catheters, balloons, and methods of manufacturing balloons for balloon catheters using lasers are disclosed. A catheter with a shaft sized for use with a 0.014 inch guide wire includes a polymeric balloon having a body portion with an inflated outer diameter of more than 6 millimeters. An inflatable balloon includes an inflated outer diameter to inner waist diameter ratio of 12.5 to 1. An inflatable polymeric balloon that has a body portion with two regions that have different molecular orientations is also provided. A method of processing an elongate polymeric material includes heating a portion of the polymeric material with a laser while longitudinally stretching the portion of the polymeric material. A method of manufacturing a balloon includes heating and longitudinally stretching a first and second portion of an elongate polymeric tube to form first and second end portion. The remaining body portion is radially expanded to form the balloon.
摘要:
Described herein are medical balloons which contain one or more material regions that are configured to cause the balloons to preferentially fold into predetermined orientations upon deflation.
摘要:
Endoprosthesis assemblies and methods of making endoprosthesis assemblies are disclosed. For example, endoprosthesis assemblies are described that include an endoprosthesis body and a polymeric coating about the endoprosthesis body. The polymeric coatings are engaged tightly to the endoprosthesis wall through engageable features created on the surface of the polymeric coatings and the surface of the endoprosthesis wall prior to engaging the surfaces.
摘要:
Endoprosthesis assemblies and methods of making endoprosthesis assemblies are disclosed. For example, endoprosthesis assemblies are described that include an endoprosthesis body and a polymeric coating about the endoprosthesis body. The polymeric coatings are engaged tightly to the endoprosthesis wall through engageable features created on the surface of the polymeric coatings and the surface of the endoprosthesis wall prior to engaging the surfaces.
摘要:
Medical device polymeric tubing segments suitable for forming catheter shafts or as balloon parisons are formed with discrete regions having different orientation relative to each other. Wall thickness may also be varied of the length of the segment.
摘要:
Medical devices such as endoprostheses (e.g., stents) containing one or more biostable layers (e.g., biostable inorganic layers) and a biodegradable underlying structure are disclosed.
摘要:
The invention generally relates to internal (e.g., implantable, insertable, etc.) drug delivery devices which contain the following: (a) one or more sources of one or more therapeutic agents; (b) one or more first electrodes, (c) one or more second electrodes and (d) one or more power sources for applying voltages across the first and second electrodes. The power sources may be adapted, for example, to promote electrically assisted therapeutic agent delivery within a subject, including electroporation and/or iontophoresis. In one aspect of the invention, the first and second electrodes are adapted to have tissue of a subject positioned between them upon deployment of the medical device within the subject, such that an electric field may be generated, which is directed into the tissue. Furthermore, the therapeutic agent sources are adapted to introduce the therapeutic agents into the electric field. In another aspect, the therapeutic agent sources are polymeric regions that contain one or more types of ion-conductive polymers and one or more types of charged therapeutic agents. In yet another aspect, the therapeutic agent sources are polymeric regions that contain one or more types of electrically conductive polymers and one or more types of charged therapeutic agents.