VASCULAR DILATOR SYSTEMS, KITS, AND METHODS

摘要

Vascular dilator systems, kits, and methods allowing for sheathless introduction of a treatment device into a body vessel or body cavity are disclosed. A vascular dilator system can include a dilator assembly, including a tubular shaft and a deformable member, and optionally, the treatment device. The deformable member can include a non-biodegradable material and can have a diameter at a proximal end portion that is greater than a diameter at a distal end portion. The distal end portion of the deformable member can be coupled to an outer surface of the tubular shaft, at or near a shaft distal end portion. The proximal end portion of the deformable member can include a diameter configured to receive or stretch around a distal end portion of the treatment device. In use, the deformable member can provide a tapered bridge between the outer surface of the tubular shaft and an outer surface of the treatment device.

主权项

1. A system comprising:
a dilator assembly including a tubular shaft and a deformable member, the tubular shaft having an outer surface increasing in diameter between a shaft distal end portion and a shaft proximal end portion, and the deformable member, including a non-biodegradable material, having an inner surface diameter at a deformable member proximal end portion, as positioned during advancement within a body vessel or body cavity, which is greater than an inner surface diameter at a deformable member distal end portion, as positioned during advancement within the body vessel or body cavity, the deformable member distal end portion coupled to the outer surface of the tubular shaft at or near the shaft distal end portion.