A surgical apparatus for removing deposits from an interior of a vessel including an outer member and a rotatable shaft having a lumen to receive a guidewire. The lumen has a cross-sectional dimension to enable fluid injection between an inner diameter of the shaft and an outer diameter of the guidewire. A tip is mounted to the shaft for rotation about its longitudinal axis and mounted such that the distal opening of the shaft is axially spaced from a distal internal surface of the tip such that fluid injected through the lumen of the shaft contacts the distal internal surface of the tip and is redirected proximally to direct in a proximal direction deposits removed by the rotational movement of the shaft. The tip includes including a guidewire lumen for receiving a guidewire to enable over the wire insertion of the apparatus.

An actuated telescoping system for navigation within a vascular lumen and thrombectomy of a thrombus. The system includes a tubular catheter member having an open distal end defining a catheter lumen, a vacuum source, a rotational drive system, a flexible shaft having a channel coupled to the rotational drive system for rotational movement in response thereto, and an optional guidewire selectively inserted at least partially within the flexible shaft. The flexible shaft is at least partially disposed within the tubular catheter member configured for uncoupled rotational and translational motion therein and to optionally define a corkscrew motion in response to rotational driving force by the drive system that results in formation of hydrodynamic vortices within the catheter lumen. The telescoping system can be capable of reversibly transitioning between navigation and thrombectomy modes by differentially disposing and actuating the components and enable faster, more efficient and simpler removal of thromboembolic material.

An object suction device that more effectively sucks an object includes a pipe, a rotating member that is rotatably provided in the pipe and conveys an object that enters from an opening portion provided at a distal end of the pipe toward a rear end of the pipe, an air motor that rotates the rotating member, a nozzle that sucks the object discharged from the rear end of the pipe, and a channel that is connected to both the nozzle and the air motor and forms a flow of air and the object.

An aspiration catheter including a body having a proximal end and an opposite distal tip with a lumen extending in a longitudinal direction therethrough from the proximal end to the distal tip. The aspiration catheter further includes a stabilizing structural member stabilizing the body relative to the inner wall of the vessel to minimize movement and/or radial expansion of the distal tip of the body while subject to aspiration that otherwise may potentially damage the inner wall of the vessel.

Cyclic aspiration system producing a cyclic aspiration pressure waveform of intermittent cyclic intervals of vacuum pressure below atmospheric pressure and a positive pressure higher than the vacuum pressure. The system including an aspiration catheter, a vacuum pump, and connected in fluid communication therebetween a positive pressure pulse generator mechanism including at least one displaceable member displaceable within a housing, wherein the at least one displaceable member controls passage therethrough the housing of the vacuum pressure and produces the positive pressure pulse by compressing collectable fluid therein. The system further including at least one actuator arranged externally of the housing displacing the at least one displaceable member within the housing.

Cyclic aspiration system producing a cyclic aspiration pressure waveform of intermittent cycles of vacuum pressure below atmospheric pressure and positive pressure higher than vacuum pressure. The system includes a dual pressure generator receptacle disposed proximally of and connected in fluid communication with an aspiration catheter. The dual pressure generator receptacle receiving a collectable fluid therein that is intermittently cyclically subjectable to application or withdraw of a compressible force via a linear displacement mechanism. Positive pressure is generated while the collectable fluid in the dual pressure generator receptacle is subject to the compressive force and vacuum pressure is generated when not subject to the compressive force. The cyclic aspiration pressure waveform is produced via the dual pressure generator receptacle without a separate vacuum pump.

Cyclic aspiration system producing an associated cyclic pressurized waveform of intermittent cyclic intervals of vacuum pressure below atmospheric pressure and a positive pressure higher than the vacuum pressure. The system including a vacuum pump generating vacuum pressure, a conduit connected in fluid communication to the vacuum pump, and an aspiration catheter connected in fluid communication to the conduit. Associated with the conduit is a positive pressure pulse generator mechanism that controls via a vacuum pressure gating device passage therethrough the conduit of the vacuum pressure generated by the vacuum pump and intermittently cyclically produces a positive pressure pulse.

An aspiration vacuum source comprises a vessel having a positive pressure fluid chamber and a vacuum chamber. The vacuum source having a primary tubing, and the positive pressure fluid chamber connected in fluid communication with the primary tubing via an auxiliary tubing. A fluid piston is slidably received within the positive pressure fluid chamber. A vacuum piston is slidably received within the vacuum chamber and produces a vacuum within the vacuum chamber upon movement of the vacuum piston. The fluid piston and the vacuum piston are each fixedly attached to be movable together within the positive pressure fluid chamber and the vacuum chamber, respectively. A secondary tubing is connected in fluid communication to the vacuum chamber. A manual pump is connected in fluid communication with the primary tubing. A vacuum is producible in the vacuum chamber in response to repeated manipulation of the manual pump.

Cyclic aspiration system including an aspiration catheter and a cyclic aspiration source connected in fluid communication thereto, wherein the cyclic aspiration pressure source produces a cyclic aspiration pressure waveform of intermittently cycling intervals of a vacuum pressure below atmospheric pressure and a positive pressure higher than the vacuum pressure. The system further including a non-powered internal structural impediment disposed within the lumen of the aspiration catheter and configured to engage with a clot capturable therein during resulting movement between the clot and the non-powered internal structural impediment while subject to the cyclic aspiration pressure waveform to assist in capture of the clot. The non-powered internal structural impediment may be permanently attached to the aspiration catheter or a separate component or device independently slidable within the lumen of the aspiration catheter.

A pulsatile aspiration system is herein disclosed that includes a catheter and pump system. The catheter includes an outer wall, a proximal section, a distal section, and an internal wall dividing the proximal section into a central main lumen and an auxiliary lumen. The pump system is in fluid communication with the catheter and independently controls the negative fluid pressure and the positive fluid pressure in the central main lumen and the auxiliary lumen so as to produce at the distal end of the catheter a pulsatile aspiration waveform variable between a maximum aspiration pressure and a maximum positive pressure. The maximum aspiration pressure is producible at the distal end of the catheter when the resulting pressure is exclusively negative fluid pressure, and the maximum positive pressure is producible at the distal end of the catheter when the positive fluid pressure counterbalances that of the negative fluid pressure.