摘要:
A wire guide includes a mandrel that has a proximal portion and a distal portion. A first coating with a low coefficient of friction is disposed on the proximal portion of the mandrel. A second coating is disposed on the distal portion of the mandrel, where the second coating provides a sub-structure. A third coating is disposed on the second coating, where the third coating comprises a surface that allows for easy maneuverability of the wire guide. The first coating on the proximal portion provides enough lubricity to keep the wire guide from becoming bound or stuck in a catheter or medical device while still allowing a user to have a good grip of the wire guide. The second coating on the distal portion provides lubricity for the wire guide, which allows the user to easily maneuver the wire guide through a vascular anatomy.
摘要:
A wire guide includes a mandrel that has a proximal portion and a distal portion. A first coating with a low coefficient of friction is disposed on the proximal portion of the mandrel. A second coating is disposed on the distal portion of the mandrel, where the second coating provides a sub-structure. A third coating is disposed on the second coating, where the third coating comprises a surface that allows for easy maneuverability of the wire guide. The first coating on the proximal portion provides enough lubricity to keep the wire guide from becoming bound or stuck in a catheter or medical device while still allowing a user to have a good grip of the wire guide. The second coating on the distal portion provides lubricity for the wire guide, which allows the user to easily maneuver the wire guide through a vascular anatomy.
摘要:
A medical device (10) includes at least a stylet (12) for establishing the location of tissue of interest, such as a nonpalpable lesion in breast tissue. The device may also include a needle assembly (14) and an aspiration syringe (16). The medical device (10) can most readily be understood as an improvement in Kopans-type or hookwire-type localizer stylet having a wire shaft (18) with a distal end (28), and a hook (36) depending in a proximal direction from the wire shaft (18). The improvements entail spacing the hook (36) proximally of the distal end (28) of the wire shaft (18), and providing the wire shaft with a twist between the hook (36) and the distal end (28) of the wire shaft (18). Wire shaft (18) has first and second wire segments (20 and 30), each including a respective distal twisted portion (24 or 34) adjacent its respective distal end (22 or 32). The first wire segment (20) further includes a generally straight portion (26) extending proximally of its distal twisted portion (24), while the second wire segment (30) further includes a hook (36) extending proximally of its distal twisted portion (34).
摘要:
An occluding device for occluding fluid flow through a lumen of a body vessel. The device comprises a coil and fibers attached to the coil. The coil has about 5 to 60 grams of initial tension to facilitate the coil to fold when deployed. The fibers extend from the coil at a length.
摘要:
The present invention generally relates to a medical surgical device and specifically a wire guide for percutaneous placement within a body lumen. The flexibility of the wire guide may be varied while it is in place within the body lumen. One embodiment of the wire guide includes and a distal tip positioned at the distal end of the coil. A plurality of core members are positioned side by side within the lumen. Methods of using the wire guide are also provided.
摘要:
Disclosed is a multi-lumen mixing device that includes a first and second lumen constructed and arranged to separately pass a first and second reagent to a mixing chamber in the device, where the mixing chamber includes a mixing feature that mixes the first and second reagents. The disclosed multi-lumen mixing device may also include a port in fluid communication with the reaction mixing to permit the product of the combined reagents to be injected into a patent.
摘要:
A device for repairing a vessel body including a plurality distinct and independently positionable, expandable frame units disposed within a tubular graft. The independent frame units are capable of being positioned, repositioned, or removed to conform the tubular graft to the anatomy of the vessel body.
摘要:
Prosthetic valve devices for implantation in body vessels are provided. The prosthetic valve device includes at least one flexible member that permits fluid flow in a first direction and substantially prevents fluid flow in a second. The valve device also includes an inflatable chamber at least partially attached to the flexible member. The inflatable chamber is adapted to receive inflating media and is adapted to contact the body vessel. A delivery system is also provided that includes a valve device and a delivery apparatus. The delivery apparatus includes a member adapted for filling the chamber of the valve device with inflating media. A related method of making the valve device is also provided.
摘要:
An implant retrieval frame for advancement of a retrieval device to snare an implant is disclosed. The frame comprises a first arm and a second arm. The first arm has a first handle end and a first pivot end. The second arm has a second handle end and a second pivot end. The second pivot end is connected to the first pivot end to define a pivot axis about which the first and second arm pivotally move. The frame further comprises a connector to which the retrieval device is attached. The connector is configured to cooperate with the first and second arms to translate pivotal movement of one of the first and second arms to linear movement of the retrieval device relative to the pivot point.
摘要:
Methods of implanting a prosthetic valve in a body vessel are provided. A first expandable frame member is delivered to and deployed at a point of treatment in a body vessel. A second expandable frame member is delivered to the point of treatment. The second expandable frame member has an attached graft member that forms a valve adapted to permit fluid flow through the body vessel in a first direction and to substantially prevent fluid flow through the body vessel in a second, opposite direction. After deployment of the first expandable frame member, the second expandable frame member is deployed at the point of treatment such that the second frame member is positioned radially inward of the first frame member within said body vessel to form a prosthetic valve.