摘要:
Expandable biodegradable devices formed of bistable and multistable unit cells for use in devices, such as stents and graft systems, are provided, in which the device has two or more stable configurations, including a contracted configuration and an expanded configuration, the contracted stable configuration having a smaller diameter than the expanded configuration.
摘要:
A medical device includes a polymer scaffold crimped to a catheter having an expansion balloon. A sheath pair is placed over the crimped scaffold after crimping to reduce recoil of the crimped polymer scaffold and maintain scaffold-balloon engagement relied on to hold the scaffold to the balloon when the scaffold is being delivered to a target in a body. The sheath pair is removed by a health professional before placing the scaffold within the body.
摘要:
A support catheter that can be used to aid positioning of a guidewire and other medical devices. The support catheter includes a catheter body having a length, and a supporting structure formed or disposed in or on the catheter body. The catheter support structure, whether alone or in combination with the other portions of the support catheter, provides flexibility, stiffness, and torqueability to the support catheter.
摘要:
Systems and methods for improving the cutting efficiency and cut profile of stent strut is provided. A means for altering the energy distribution of a laser beam is provided, along with various ways of controlling a laser to provide for improved strut configurations are provided. A method for improved cutting speeds using a combination of laser sources is also provided.
摘要:
A support catheter that can be used to aid positioning of a guidewire and other medical devices. The support catheter includes a catheter body having a length, and a supporting structure formed or disposed in or on the catheter body. The catheter support structure, whether alone or in combination with the other portions of the support catheter, provides flexibility, stiffness, and torqueability to the support catheter.
摘要:
A system for delivering a contrast medium to a treatment site including a delivery device, and a portable power injector. The delivery device includes a guidewire lumen and a contrast injection lumen, the guidewire lumen and contrast injection lumen being at least partially coaxial. The portable power injector includes an injector body and is configured to contain a contrast medium. The injector body has a plunger disposed therein. The portable power injector also includes a pressure generator, the pressure generator being configured to apply a pressure to the plunger to drive the contrast medium from the injector body and through a distal end of the contrast injection lumen.
摘要:
An apparatus and method are provided for simultaneously electropolishing a plurality of metallic stents. A plurality of elongated members on the apparatus are movably engaged with a plate such that movement of the plate relative to the elongated members causes each of the elongated members to rotate on its respective longitudinal axis when immersed in an electrolytic solution. A continuous cathode is located in close proximity to each of the elongated members when they are immersed in the electrolytic solution.
摘要:
This invention describes a guidewire handling device for creating an indicium and/or urging a guidewire. A guidewire handling device is provided that includes a device body having a guidewire passage sized to receive a guidewire. A clamping member is coupled to the device body and is movable between a first and second position. The guidewire handling device includes a visible marker that provides visible feedback regarding the angular orientation of the guidewire handling device. In addition, the guidewire handling device includes a contoured surface that allows the torque applied to the guidewire handling device to be dependent on the location where the torque is applied.
摘要:
Generally, the present invention includes a segmented endoprosthesis for delivery into a lumen of a body. The endoprostheses can be configured to include a plurality of longitudinally-adjacent annular elements joined together with a shock-absorbing inter-connector such that adjacent annular elements can move independently from each other. Also, the segmented endoprosthesis can be comprised of a plurality of sub-endoprostheses that are connected or in contact with each other during delivery, and separate from each other after being deployed. The segmented endoprosthesis can provide improved deliverability, strength, flexibility, and/or functionality during and after deployment. The use of a segmented endoprosthesis can combine the characteristics of multiple small endoprostheses into a standard- or regular-sized endoprosthesis.
摘要:
The present invention relates to medical devices that can be placed in bodily conduits. The invention particularly relates to balloons and catheters using such balloons for administering treatments to widen constricted passages, deliver therapeutic agents, deliver endoprosthesis' or perform other medical procedures. The balloon catheter can include an expandable balloon disposed adjacent a distal end of an elongated catheter shaft. The balloon can be constructed of a novel absorbable biomaterial.