摘要:
Medical devices that include micromachined hypotubes or that have themselves been micromachined can provide advantages in flexibility, strength and other desirable properties. Examples of such medical devices may include catheters such as guide catheters and balloon catheters. Such devices may also include dual shaft medical devices in which an outer shaft is reversibly lockable onto an inner shaft.
摘要:
The present disclosure relates generally to devices, systems and methods for use with cardiac defects. A closure device includes an elongate body with a first actuator segment and a second actuator segment associated with the elongate body that can be bent into a first predetermined position and then to a second predetermined position where the distal end and the proximal end are more closely positioned than when in the first predetermined position.
摘要:
Methods and devices incorporating a guidewire entry port subassembly for use in rapid exchange catheters. The use of a subassembly allows for stronger quality control and simpler fabrication of a rapid exchange device. In several embodiments, methods of making a molded guidewire entry port using a mold, often in conjunction with one or more mandrels, are disclosed. Several device embodiments include a separate molded guidewire port as well as molded guidewire ports which are attached, during a molding step, to segments of a catheter.
摘要:
The present disclosure relates generally to devices, systems and methods for use with cardiac defects. A closure device includes an elongate body with a first actuator segment and a second actuator segment associated with the elongate body that can be bent into a first predetermined position and then to a second predetermined position where the distal end and the proximal end are more closely positioned than when in the first predetermined position.
摘要:
The present disclosure relates generally to devices and methods for use with cardiac defects, more particularly, the present disclosure relates to a device including a frame defining a lumen, where the frame expands from a first configuration to a second configuration larger than the first configuration. The device also includes an anchoring member extending from the frame to secure the frame while in the second configuration and a plug portion of the frame to occlude at least a portion of the lumen.
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:
Medical balloons and balloon preforms are made by methods which include the step of selectively removing material from the proximal and/or distal ends of a segment. In the case of a thermoplastic material characterized by one or more glass transition temperatures, the segment may optionally be maintained at a temperature below the glass transition temperature of the segment during the material removal step.
摘要:
The present invention is directed to distal tip designs for catheter, wherein distal tip material is positioned about an inner shaft. The distal tip material may also be used as a tie layer for thermally bonding two incompatible materials together, such as a waist portion of a balloon to the inner shaft.