Adaptive pressure-cyclical aspiration device and methods
AssigneeVon Vascular, Inc.
InventorsVictor GAMEZ, Manning J. HANSER, Alfonso HERMIDA
Life of this patent
Estimating the term…
Abstract
An aspiration system operable for relieving occlusions caused by clots and other lodged bodies in a vessel uses a cyclic algorithm which is adaptable to receipt of any known or developed aspiration catheter to treat acute ischemic occlusions by applied alternating catheter pressure within a defined range. The application of the algorithm is customizable by the specific physical characteristics of the catheter selected, making the system universally applicable to a significant range of catheters. A user interface may be provided conveniently within reach of the user enabling interactive input of intervening selections based on recommendations by a processor running the algorithm.
Claims20
A method of aspirating a thrombus from a body lumen defined by a vessel via a catheter coupled to an aspiration system, the aspiration system including a motor, a controller implemented in at least one of a memory or a processor, and a sensor, the method comprising:
- selecting, via the controller, an aspiration algorithm that includes a forward speed, and a backward speed;
- sending, from the controller, a first command to the motor to operate the motor in a first extraction mode during which the motor is cycled between the forward speed and the backward speed for a plurality of cycles to produce a thrombus removal force at a tip of the catheter;
- receiving, from the sensor, a signal associated with the thrombus removal force;
- determining a presence of a signal characteristic of the signal, the signal characteristic being associated with contact between a side wall of the vessel and the tip of the catheter;
- and
- sending, from the controller and on a condition that the signal characteristic is present, a second command to the motor to operate the motor in a second extraction mode, the second extraction mode different from the first extraction mode.
An aspiration system configured to aspirate a thrombus from a body lumen defined by a vessel via a catheter, the aspiration system, comprising:
- a motor;
- a sensor;
- and
- a controller including at least one of a memory or a processor, the controller configured to:
- (1) receive a user input, the user input associated with the catheter to be coupled to the aspiration system, (2) select an aspiration algorithm that includes, a forward speed, and a backward speed, (3) send a first command to the motor to operate the motor in a first extraction mode during which the motor is cycled between the forward speed and the backward speed for a plurality of cycles to produce a thrombus removal force at a tip of the catheter, (4) receive a signal associated with the thrombus removal force from the sensor, (5) determine a presence of a signal characteristic of the signal, the signal characteristic being associated with contact between a side wall of the vessel and the tip of the catheter, and (6) send a second command, on a condition that the signal characteristic is present, to the motor to the motor to operate the motor in a second extraction mode, the second extraction mode different from the first extraction mode.
Dependencies are inferred from the claim text.