A delivery device for delivering an instrument into a catheter assembly may include a housing having a proximal end, a distal end, and a slot. The delivery device may include a guide feature, which may be disposed within the housing. The guide feature may extend through the slot. The delivery device may include an instrument disposed within the housing and extending through the guide feature. In response to movement of the guide feature along the slot in the distal direction a first distance, a first end of the instrument may be advanced in the distal direction a second distance, which may be greater than the first distance. A second end of the instrument may be stationary with respect to the housing.

An elongate steerable medical device includes a shaft and a handle assembly that is removably securable to the shaft. The shaft includes an elongate outer member and an elongate inner member that is disposed within the elongate outer member. The handle assembly includes a proximal handle, a spool that is slidingly secured to the handle body and a collet that is removably secured to the handle body. The spool is adapted to releasable secure the elongate inner member and the collet is adapted to releasably secure the elongate outer member.

A device for one-handed insertion of a guidewire into a vessel or cavity is provided. The device has a body, an actuator carriage, a guidewire feed, and a syringe. The body has a handle, a guideway, and a clip to retain the syringe. The syringe has a barrel and a plunger with a flange and a guidewire passage. The actuator carriage has a trigger and a clip to grasp the syringe plunger flange. The actuator carriage slides along the body guideway. The guidewire feed has a wire feed surface. The thumb engages wire at the wire feed surface to advance and retract the wire through the guidewire passage and a finger moves the trigger to move the syringe plunger rearwardly and/or forwardly, while the remaining fingers of the one hand grasp the handle. The device allows the user to sense resistance encountered by the tip of the wire.

A catheter inserter (100) including an actuator assembly (125) to move a catheter assembly outside a housing (101) by engaging the catheter assembly multiple times, in an example. The inserter includes a needle assembly (140) in a housing that has a first position with a needle extending from the housing and a second position with the needle retracted into the housing. A catheter assembly (180) is removably positioned in the housing and includes a catheter (181) and a hub (182) connected to the catheter. An actuator assembly (125) is further mounted to the housing and operates to selectively engage a guidewire assembly to move the guidewire past the needle and to selectively engage the catheter assembly to move the catheter and the hub outside the housing.

An imaging medical device includes a shaft main body portion having an image acquiring lumen and a guide wire lumen. The shaft main body portion includes a first shaft proximal portion in which the image acquiring lumen is disposed, and a second shaft proximal portion in which the guide wire lumen is disposed, with the two being bifurcated. First and second hub portions are interlocked with the first and second shaft proximal portions respectively, and a transducer unit is fixed to a drive shaft. Reference line X represents the axis line of the shaft main body portion, θ1 represents the inclination of the central axis of the first hub portion relative to the reference line, θ2 represents the inclination of the central axis of the second hub portion relative to the reference line, and the relationship of |θ1|>|θ2| is satisfied.

A medical device having an imaging function includes a shaft main body portion having an image acquiring lumen and a guide wire lumen extending from a distal side to a proximal side of the shaft main body portion. A proximal portion of the shaft main body includes a first shaft proximal portion in which the image acquiring lumen is disposed, and a second shaft proximal portion in which the guide wire lumen is disposed, and which are bifurcated. A shaft distal portion has a common lumen in which the image acquiring lumen and the guide wire lumen converge, a first hub portion is interlocked with the first shaft proximal portion, a second hub portion is interlocked with the second shaft proximal portion, and a hub casing collectively covers the first shaft proximal portion, the second shaft proximal portion, the first hub portion and the second hub portion.

A guidewire torquer is described for manually controlling a guidewire, and imparting motion to a guidewire. The guidewire torquer comprises a handling body for handling of the guidewire torque. The guidewire torquer further comprises an insertion channel for receiving the guidewire. The insertion channel is arranged at a surface of the handling body, and the handling body comprises a shaping feature. The shaping feature provides tactile feedback as to the orientation of the guidewire, and the insertion channel provides a frictional fixation of the guidewire relative to the handling body.

Tortuosity of vessels at or leading to the site of minimally invasive procedures is a problem for conducting such procedures as they increase the difficulty to guide the procedural catheters through tortuous vessels. Methods and apparatus for stabilization of the sheaths and catheters during access, procedures, and withdrawal in these tortuous vessels are disclosed. The apparatus and method for improving access include application of a pull component to the stabilized procedural catheter using a stabilization catheter/wire in addition to a push component from the percutaneous access to make the access easier while enabling use of more flexible catheters and softer wires. These methods and devices address the problems of trauma to the vessels during access, procedure and removal of catheters and wires, improve pushability of softer catheters and wires, and also substantially reduce substantially the procedure time.

An introducer apparatus includes an outer sleeve and an inner cannula received within the lumen of the outer sleeve. The outer sleeve has a profile such that at least a portion of the distal end of the outer sleeve tapers in the distal direction at an angle not exceeding about 2° relative to a longitudinal axis of the apparatus. The distal open end of the outer sleeve has a wall thickness not exceeding about 0.003 inch. The inner cannula includes a tapered distal end portion. The tapered distal portion of the inner cannula extends distal to the distal open end of the outer sleeve, such that a generally smooth diametrical transition is provided between the outer sleeve tapered portion and the open distal end of the inner cannula.

Systems for providing access across a site of obstruction and methods for manufacturing and using such systems. Such systems may include a sleeve having an inflation lumen; a bushing disposed in a distal section of the sleeve; and an everting member coupled to the sleeve with the bushing, the everting member being movable from an inverted position inside the sleeve to an everted position outside the sleeve in response to an increase in pressure in the inflation lumen.