A method for making a vibrational catheter device includes providing a transition connector comprising a proximal portion, a distal portion, and a tapered portion that defines a tapered outer surface of the transition connector, the proximal portion being wider than the distal portion, and the transition connector having a bore disposed within the tapered portion; inserting a proximal end of an ultrasound transmission member into the bore; and deforming at least part of the transition connector at the tapered outer surface so as to apply greater force to the wider proximal portion than to the distal portion to secure the proximal end of the ultrasound transmission member within the bore.

A coupling for attaching to an end of a tube, pipe, conduit or other round solid or hollow section. The coupling includes an inner body and a collar to be provided around the inner body. The inner body has an interior bore passing through at least a portion thereof to receive a tube and the bore has one or more interior annular protuberances extending into the bore. When the collar is provided around the inner body it applies a circumferential compressive force to deform the inner body such that the one or more annular protuberances engage the tube to seal with it.

A tube fitting for sealing an end of a tube uses a notch formed in the exterior surface of the tube as a sealing seat. An internally threaded body is configured to receive an externally threaded end of a nut, while the body and the nut are mounted in a surrounding relationship to the tube end. A ferrule mounted between the nut and the tube is forced to plastically deform and move into the notch to thereby seal the tube end.

Systems and methods are disclosed herein for dressing centering a bearing compartment in a gas turbine engine. A nut may be inserted through an outer case of a gas turbine engine. The nut may be coupled to a strut which centers a bearing compartment. The nut may be rotated to achieve a desired tension on the strut to center the bearing compartment. A retaining plate comprising a collar may be positioned over the nut. A swaging tool comprising a swaging ramp may be positioned over the nut. The swaging tool may be forced against the retaining plate using a draw-in bolt. The swaging ramp may contact the collar and form indentations in the collar to lock the nut in place.

A method for joining and sealing two grooved-ended pipe segments without disassembling a coupling is disclosed. The coupling has a housing with upper and lower arcuate housing segments and left and right bridge segments. Each bridge segment has at least one set of dihedrally angled faces that engage corresponding faces each in the upper and lower housing segments. Drawing the upper and lower segments inwardly together along a first axis, presses each bridge segment inward along a second axis roughly tangential to the first axis. All segments are loosely pre-assembled into a coupling which has a one-piece circular sealing gasket that has an inward circumferential and centrally positioned pipe stop that has an inner diameter smaller than an outer diameter of the pipes to be joined.

A method of crimping a stent is disclosed. The stent includes a minimum crimped diameter such that in the minimum crimped diameter, a pair of stent rings, between which marker support structures reside, do not make contact with the marker support structures. The crimped profile of the stent of the present invention can be as small as the crimped profile of a same stent but without the maker support structures.

Embodiments of a radially collapsible and expandable prosthetic heart valve and method for crimping the prosthetic heart valve are disclosed. A method of radially compressing a prosthetic valve can include partially inserting the valve while in a radially expanded configuration into a crimping device comprising crimper jaws, wherein a portion of the valve comprising an outer skirt extends outside of the crimper jaws. The method can further include crimping the valve to a first partially collapsed configuration, further inserting the valve into the crimping device, such that the outer skirt is between the crimper jaws, and crimping the valve to a second partially collapsed configuration, wherein a diameter of the valve is smaller in the second partially collapsed configuration than in the first partially collapsed configuration.

A medical device includes a polymer stent (or scaffold) crimped to a catheter balloon. The stent, after being expanded from a crimped state by the balloon, provides a crush recovery of about 90% of its expanded diameter after being pinched or crushed by an amount equal to about 50% of the expanded diameter. The stent has a pattern including a W-shaped or W-V shaped closed cell and links connecting the closed cells.

A bumper spring assembly having a one piece mandrel including an integral head piece is further configured with a cage assembly retained on the mandrel with a cage nut locked to the mandrel to obviate the need for pins, set screws, and the like, to provide a more robust assembly. In two embodiments the cage nut is locked to the mandrel in a swaging operation. Improved flow of fluids through and around the bumper spring assembly are also provided.

A bumper spring assembly having a one piece mandrel including an integral head piece is further configured with a cage assembly retained on the mandrel with a cage nut locked to the mandrel to obviate the need for pins, set screws, and the like, to provide a more robust assembly. In two embodiments the cage nut is locked to the mandrel in a swaging operation. Improved flow of fluids through and around the bumper spring assembly are also provided.