摘要:
The present invention provides medical devices comprising nanocomposite materials. By utilizing nanocomposites in the production thereof, the inventive medical devices can be produced with various advantageous properties. Methods of producing the inventive medical devices are also provided. Inasmuch as the inventive devices are expected to provide certain advantages in their use, there is also provided a method of medical care including methods of treatment or diagnosis, wherein the inventive devices are brought into therapeutic contact with a body to be treated or diagnosed thereby.
摘要:
Medical devices may include structure or provision that permit a physician or other health care professional to adjust particular parameters such as flexibility, stiffness and compressive strength of at least a portion of the medical device. In some instances, the medical device may be adjusted prior to inserting the medical device into a patient. In some cases, the medical device may be adjusted while in use within the patient.
摘要:
This disclosure employs temperature, magnetism and Curie point transition to construct and use catheters and other medical devices that can be visualized using magnetic resonance imaging (MRI). Accordingly, this disclosure includes, but is not limited to, medical devices, means of constructing medical devices, and methods of imaging medical devices using magnetic resonance and other technologies.
摘要:
An endoprosthesis includes an expandable tubular body defined by a plurality of struts. In some embodiments, the expandable tubular body includes a bioerodible metal that has at least a first surface region and a second surface region. The first and second surface regions can have different surface oxide compositions. In some embodiments, the first portion has a thermally altered microstructure and the second portion has a wrought microstructure. The thermally altered microstructure can be a cast microstructure comprising dendritic grains. The first portion forms at least a portion of an outer surface of the expandable tubular body. In some embodiments, the expandable tubular body includes iron or a bioerodible iron alloy and at least one surface of the expandable tubular body includes a substantially uniform coating of iron(III) oxide.
摘要:
A system for controlling multiple guidewires comprises a guiderail, which has a housing that defines a first guidewire lumen and a second guidewire lumen. The guidewire lumens extend through the entire length of the guiderail. The guiderail housing further defines a first longitudinal opening that extends from the first guidewire lumen to the exterior of the guiderail, and a second longitudinal opening that extends from the second guidewire lumen to the exterior of the guiderail.
摘要:
In one embodiment, an apparatus for shaping an article may comprise a plurality of movable dies arranged to form a chamber whose size may be varied by moving the dies. Each of the dies may have a contacting surface for contacting the article to be shaped. The chamber may have a first portion having a first cross-section and a second portion having a second cross-section. Either portion may include a taper. The first portion may have a differently shaped cross-section than the second portion. The first portion may have a cross-section of greater area than the second portion. The longitudinal axis of the first portion may be offset from the longitudinal axis of the second portion.
摘要:
An endoprosthesis, e.g., a stent (e.g., a drug eluting stent), that includes a porous surface and hollow elements integrated with a coating on the surface and a method of making the same are disclosed.
摘要:
The present invention relates to medical devices for implantation or insertion into body lumens, for example, catheters, guidewires, stents and aneurysm coils. The devices of the present invention comprise electrically actuated materials, such as electroactive polymers and piezoelectric and electrostrictive materials, which enhance or expand their functionality.
摘要:
A stent can comprise a tubular body having a first region and a second region. The tubular body is defined by a plurality of serpentine bands. Each serpentine band comprises a plurality of alternating proximal turns and distal turns connected by struts. The second region comprises a first serpentine band and a second serpentine band that overlap one another about a common stent circumference. The first region comprises a serpentine band that is not overlapped by another serpentine band about a common stent circumference.