摘要:
Apparatus (10) for locating an ostium of a branch vessel includes a delivery- catheter (12) having a distal end (16) sized for introduction into the branch, and locator elements (50) including first ends (52) fixed to the distal end (16) and second ends (54) free from the distal end (16). The locator elements (50) are compressible from a transverse, deployed condition to an axial, contracted condition, wherein the second ends (54) are disposed proximal to the first ends (52). The catheter (12) may be used to deliver a stent (40) into the branch with the expanded locator element (50) facilitating positioning the stent (40).
摘要:
Apparatus are provided for accessing and/or removing material from a body lumen. The apparatus includes a tubular sheath including a shaft having a proximal end and an expandable distal end that is expandable between a collapsed configuration and an expanded, tapered configuration. In one embodiment, the expandable member include inner and outer membranes attached together and to the shaft. Optionally, the inner membrane may include a reinforcement layer and/or the outer membrane may have a longer chord length than the inner membrane, to enhance the expandable member expanding such that a distal opening is defined by the expandable member having s a relatively large diameter tapering proximally to a lumen of the shaft. Optionally, the apparatus may include a dilator and/or one or more treatment devices receivable in the lumen of the shaft.
摘要:
Some aspects of this disclosure relate to a method for crosslinking a biological fluid comprising combining a biological fluid with a crosslinker to covalently crosslink proteins endogenous to the biological fluid to form a crosslinked gel. Examples of a biological fluid are blood, plasma, or serum.
摘要:
Apparatus and methods are provided for locating an ostium of a body lumen. In one embodiment, a delivery catheter (10) or other tubular member includes a distal end sized for introduction into a body lumen, and one or more locator loops (50) on the distal end. In one embodiment, the locator loop may include first and second ends fixed to the distal end, first and second resilient struts extending from the first and second ends, respectively, and a curved intermediate region extending between the first and second struts. The loop may be resiliently compressible to a contracted condition for delivery and resiliently expandable to an enlarged condition when deployed. The apparatus may include one or more balloons, stents (40) , and the like on the distal end adjacent the locator loop.