Methods of aspirating thrombi
AssigneeInsera Therapeutics, Inc.
InventorsVallabh Janardhan, Vikram Janardhan
Life of this patent
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Abstract
Methods of providing suction may include providing suction patterns having varying intensity levels, such as a “crescendo suction” pattern. Cycles of crescendo suction patterns may comprise variable intensities of negative suction in a crescendo pattern (such as a small intensity negative suction pressure, a medium intensity negative suction pressure, and a large intensity negative suction pressure). The suction patterns may include pauses or temporary stops to the negative suction pressure.
Claims19
A method of aspirating thrombi using a varying suction pattern, comprising:
- inserting a distal end of a microcatheter within vasculature and advancing the distal end of the microcatheter to a location proximal to a thrombus;
- inserting a thrombectomy device to at least partially span the thrombus,
- applying suction to a proximal end of the microcatheter to aspirate the thrombus,
- wherein the suction applied comprises a repetitive pattern of varying suction intensity levels each applied for a particular time duration, wherein the repetitive pattern comprises three different suction intensity levels and at least one pause for a pause time duration,
- wherein applying suction to the proximal end of the microcatheter comprises causing an automated control unit to apply negative suction having the repetitive pattern, and
- wherein the at least one pause is at the end of the repetitive pattern such that there is a pause between each repetition of the repetitive pattern.
A method of aspirating thrombi using a varying suction pattern, comprising:
- inserting a distal end of a catheter within vasculature to a location proximate a thrombus;
- causing negative suction to be applied to the location through the catheter, using an automated control unit, wherein the negative suction applied has a repetitive suction pattern and a pause between each repetition of the repetitive suction pattern,
- wherein the repetitive suction pattern comprises a first intensity level for a first time duration, a second intensity level for a second time duration, and a pause time duration wherein suction is paused, and
- wherein the second intensity level is greater than the first intensity level.
A method of aspirating thrombi using a varying suction pattern, comprising:
- providing an aspiration system comprising a catheter, suction tubing and an automated suction control unit, the aspiration system configured for:
- causing suction to be applied by the suction control unit to a location proximate to a thrombus through the suction tubing coupled to a proximal end of the catheter upon user selection of one of a plurality of preconfigured repetitive suction patterns,
- wherein each of the preconfigured repetitive suction patterns comprises a first intensity level having a first time duration, a second intensity level having a second time duration, and a pause time duration wherein suction is paused, and
- wherein the second intensity level is greater than the first intensity level, and
- wherein the applied suction comprises a pause between each repetition of the repetitive suction pattern.
Dependencies are inferred from the claim text.