Fiber based medical devices and aspiration catheters
First Claim
1. An actuation tool for manipulating a medical device comprising an overtube and a corewire within a lumen of the overtube, wherein a proximal end of the corewire extends from a proximal end of the overtube;
- the actuation tool comprising;
a support structure;
an overtube connection supported by the support structure, the overtube connection comprising a fastening element configured for gripping the overtube at or near its proximal end with the corewire extending outward from the overtube;
a corewire connection supported by the support structure the corewire connection comprising a corewire connecting element configured to grip the corewire at or near its proximal end;
an adjustable channel comprising slidably engaging elements forming a lumen between the engaging elements, the adjustable channel being supported within the support structure, the adjustable channel extending between the tube connection and the corewire connection, wherein the lumen has a diameter larger than the diameter of the corewire and wherein lateral movement of the engaging elements changes the relative distance of the overtube connection and the corewire connection; and
a control element comprising a rotatable element and a lateral transmission operably connected to the adjustable channel wherein the transmission converts rotational motion of the rotatable element to relative translational motion of the engaging elements to adjust the relative distance of the overtube connection and the corewire connection to move the proximal ends of the tube and the corewire toward or away from each other when the overtube and corewire are respectively gripped by the corewire connection and the overtube connection.
2 Assignments
0 Petitions
Accused Products
Abstract
Systems for less invasive medical procedures comprise a filter device mounted on an integrated guiding structure and an aspiration catheter. These components can be used together or separately, and the system can be used with other medical devices that are designed for less invasive procedures, such as procedures in a patient'"'"'s vasculature. The filter device can involve improved torque coupling with a torque coupler associated with a resilient member that correspondingly also provides increased flexibility relative to an overtube that forms a tube for the remaining portions of the device. An actuation tool for the filter device used a systematic loading procedure for proper loading of the corewire and overtube into the actuation tool. A fiber cartridge comprises fibers loaded as a bundle into the cartridge for delivery with the ends of the fibers respectively bonded to radiopaque markers that can be visualized to come together when the filter is properly deployed. The aspiration catheter generally has a rapid exchange format. The catheter can have a radiopaque band that is held in place under metal wire embedded within the polymer forming the tube of the catheter. In some embodiments, the aspiration catheter has a small diameter distal portion that can access into small diameter vessels in which the distal portion has a smaller average diameter than the remaining tube of the catheter.
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Citations
27 Claims
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1. An actuation tool for manipulating a medical device comprising an overtube and a corewire within a lumen of the overtube, wherein a proximal end of the corewire extends from a proximal end of the overtube;
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the actuation tool comprising; a support structure; an overtube connection supported by the support structure, the overtube connection comprising a fastening element configured for gripping the overtube at or near its proximal end with the corewire extending outward from the overtube; a corewire connection supported by the support structure the corewire connection comprising a corewire connecting element configured to grip the corewire at or near its proximal end; an adjustable channel comprising slidably engaging elements forming a lumen between the engaging elements, the adjustable channel being supported within the support structure, the adjustable channel extending between the tube connection and the corewire connection, wherein the lumen has a diameter larger than the diameter of the corewire and wherein lateral movement of the engaging elements changes the relative distance of the overtube connection and the corewire connection; and a control element comprising a rotatable element and a lateral transmission operably connected to the adjustable channel wherein the transmission converts rotational motion of the rotatable element to relative translational motion of the engaging elements to adjust the relative distance of the overtube connection and the corewire connection to move the proximal ends of the tube and the corewire toward or away from each other when the overtube and corewire are respectively gripped by the corewire connection and the overtube connection. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A fiber-based medical device comprising:
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an overtube comprising a proximal end, a distal end, and a lumen extending therethrough; and a corewire comprising a proximal end and a distal end, the corewire extending through the lumen of the overtube and through the first tube; and a fiber cartridge comprising; a bundle of flexible fibers; a first radiopaque marker associated directly or indirectly with a first end of the bundle of flexible fibers; and a second radiopaque marker associated directly or indirectly with a second end of the bundle of fibers, wherein the fiber cartridge has a deployed configuration having the first marker and second marker projecting a single merged image. - View Dependent Claims (9, 10, 11)
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12. A medical device comprising:
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an overtube comprising a proximal end, a distal end, and a lumen extending there through; a corewire comprising a proximal end and a distal end, the corewire extending through the lumen of the overtube with the proximal end of the corewire extending from the proximal end of the overtube and the distal end of the corewire extending from the distal end of the overtube; a resilient segment directly or indirectly attached to the distal end of the tube; and a torque coupler comprising a corewire coupling element integral with the corewire and a resilient segment coupling element integral with the resilient segment, the corewire coupling element engaging with the resilient segment coupling element to couple the rotational motion of the resilient segment with the corewire. - View Dependent Claims (13, 14, 15)
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16. A catheter comprising:
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a tube comprising a polymer, the tube having a proximal portion and a distal portion; a radiopaque band in contact with the distal portion of the tube; and metal wire, at least a portion of which is embedded in the polymer and extending over the radiopaque band. - View Dependent Claims (17, 18, 19)
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- 20. An aspiration catheter comprising a connector, a proximal portion, a distal tip and a tube connected between the distal tip and the proximal portion, wherein the connector is attached to the proximal portion to provide a passageway to the distal tip through a continuous lumen extending from the proximal portion to the distal tip, wherein the distal tip has an average outer diameter from about 25 percent to about 90 percent of the average outer diameter of the tube.
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27. A method for loading a medical device into an actuation tool,
the medical device comprising an overtube and a corewire within a lumen of the tube with a proximal end of the corewire extending from a proximal end of the tube and the actuation tool comprising an overtube connection and a corewire connection each connected to a support structure supporting a control element with an adjustable channel, wherein the corewire connection comprising a viewing area for observing the corewire, the method comprising: -
guiding the proximal end of the corewire into the overtube connection, the adjustable channel, and the corewire connection until observing the corewire through the viewing area indicating proper placement of the corewire; engaging the corewire connection to grip the corewire extending from the proximal end of the overtube; and engaging the tube connection onto the proximal end of the overtube.
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Specification