摘要:
An interventional catheter assembly comprising a catheter for insertion and guidance to a target site in a body lumen or a cavity and an operating head mounted in proximity to a distal end of the catheter and comprising a system for removing obstructive material from the target site is provided. In certain embodiments, the catheter assembly includes at least one aspiration port located proximal to the operating head that communicates with a first sealed lumen for withdrawing fluids and obstructive material from the target site, together with at least one liquid infusion port penetrating the catheter and located proximal to the at least one aspiration port that communicates with a second sealed lumen for supplying fluid to a location in proximity to the target site.
摘要:
An interventional catheter assembly comprising a catheter for insertion and guidance to a target site in a body lumen or a cavity and an operating head mounted in proximity to a distal end of the catheter and comprising a system for removing obstructive material from the target site is provided. In certain embodiments, the catheter assembly includes at least one aspiration port located proximal to the operating head that communicates with a first sealed lumen for withdrawing fluids and obstructive material from the target site, together with at least one liquid infusion port penetrating the catheter and located proximal to the at least one aspiration port that communicates with a second sealed lumen for supplying fluid to a location in proximity to the target site.
摘要:
An interventional catheter assembly comprising a catheter for insertion and guidance to a target site in a body lumen or a cavity and an operating head mounted in proximity to a distal end of the catheter and comprising a system for removing obstructive material from the target site is provided. In certain embodiments, the catheter assembly includes at least one aspiration port located proximal to the operating head that communicates with a first sealed lumen for withdrawing fluids and obstructive material from the target site, together with at least one liquid infusion port penetrating the catheter and located proximal to the at least one aspiration port that communicates with a second sealed lumen for supplying fluid to a location in proximity to the target site.
摘要:
Intralumenal material removal systems are provided using an advanceable and rotatable cutter assembly designed for differential cutting. The intralumenal material removal system includes a cutter assembly positionable in the body cavity of a mammalian subject. One embodiment of the cutter assembly includes a cutter with blades that are designed and arranged to form an acute blade angle of attack with the matter-to-be-removed. The cutter assembly is axially advanceable by translating the drive shaft and rotatable by rotating the drive shaft. The occlusive material is scraped by the cutter assembly and may be aspirated to remove the material from the body cavity. The cutter assembly may provide aspiration ports positioned between facing surfaces of the blades.
摘要:
A disposable surgical drape for use in cardiovascular surgical procedures which may optionally be used to isolate a sterile pumping mechanism from a non-sterile pump driving mechanism and/or provide support for medical equipment, such as medical tubing.
摘要:
A molded plastic snowshoe of the type with a boot binding permitting pivoting in the pitch direction has a boot heel contact area formed of a flexible material. This provides for a soft strike as the boot comes in contact with the snowshoe deck in each step, eliminating the noise that usually accompanies the heel strike on a hard deck, and also increases comfort in use of the snowshoe, with the hard strike feel eliminated. Another advantage is that with a cleat mounted at the bottom of the soft section of decking the snowshoe adapts better to irregularities of terrain since the heel cleat is essentially suspended relative to the stiffer molded portions of the snowshoe. The flexibly suspended heel cleat can be pushed down to engage with snow or ice despite the irregular surface of the terrain and the rigidness of the snowshoe deck surrounding the cleat area.
摘要:
A molded or plastic composite snowshoe is formed of two assembled sections, in a way that imparts flexibility to the snowshoe, allowing some degree of torsional twisting or warping flexibility so that the snowshoe adapts to uneven terrain. In a principal embodiment the molded snowshoe is divided into forward and aft sections along a line slightly behind the nose area and near the pivot axis in the case of a pitch-pivoting binding. Joints between sections are in narrow rims at left and right, at opposed sides of a large central opening for the crampon/binding and boot. The joints are designed to securely hold the forward and aft molded sections together but to allow a degree of torsion between them when needed. Steel structural traction rails extend across the joints but are constructed and secured to the snowshoe sections in a manner that preserves the desired flexibility.
摘要:
A molded or plastic composite snowshoe is formed of two assembled sections, in a way that imparts flexibility to the snowshoe, allowing some degree of torsional twisting or warping flexibility so that the snowshoe adapts to uneven terrain. In a principal embodiment the molded snowshoe is divided into forward and aft sections along a line slightly behind the nose area and near the pivot axis in the case of a pitch-pivoting binding. Joints between sections are in narrow rims at left and right, at opposed sides of a large central opening for the crampon/binding and boot. The joints are designed to securely hold the forward and aft molded sections together but to allow a degree of torsion between them when needed. Steel structural traction rails extend across the joints but are constructed and secured to the snowshoe sections in a manner that preserves the desired flexibility.
摘要:
A disposable surgical drape for use in cardiovascular surgical procedures which may optionally be used to isolate a sterile pumping mechanism from a non-sterile pump driving mechanism and/or provide support for medical equipment, such as medical tubing.
摘要:
A snowshoe with binding suspended by tension straps secured to a frame is assembled from a generally U-shaped nose, and an aft section which can be a midsection and a tail. In one embodiment the nose has sufficient strength to resist inward pulling under tension to suspend the binding resiliently, without significant strength contribution from aft portions of the frame. The aft portion of the snowshoe includes traction elements, i.e. rows of teeth, positioned to engage into snow and ice. An important aspect of the invention is that the nose and aft sections are non-integral and very dissimilar in cross section, in a suspended-binding snowshoe.