ASPIRATION AND MECHANICAL THROMBECTOMY METHODS
Vascular treatment and methods include a plurality of self-expanding bulbs and a hypotube including interspersed patterns of longitudinally spaced rows of kerfs. Joints between woven structures and hypotubes include solder. Woven structures include patterns of radiopaque filaments measurable under x-ray. Structures are heat treated to include at least shapes at different temperatures. A catheter includes a hypotube including interspersed patterns of longitudinally spaced rows of kerfs. Heat treating systems include a detachable flange. Laser cutting systems include a fluid flow system.
1 . (canceled)
2 . A method of treating a thrombus in a vessel with combination mechanical thrombectomy and aspiration, the method comprising:
advancing a guide catheter in the vessel;
advancing a microcatheter through the guide catheter in the vessel;
advancing a thrombectomy device through the microcatheter in the vessel, the thrombectomy device including:
a plurality of self-expanding bulbs; and
a delivery device coupled to the plurality of self-expanding bulbs,
wherein advancing the thrombectomy device includes crossing the thrombus with a distal-most bulb of the plurality of self-expanding bulbs;
retracting the microcatheter and expanding at least some of the plurality of self-expanding bulbs from a radially compressed state to a radially expanded state, wherein retracting the microcatheter is at least until a distal end of the microcatheter is proximal to the thrombus;
entrapping the thrombus in at least some of the plurality of self-expanding bulbs in the radially expanded state; and
at least partially simultaneously:
retracting the microcatheter and the thrombectomy device into the guide catheter; and
applying negative suction pressure to the guide catheter.
3 . The method of claim 2 , wherein the vessel comprises a blood vessel in a brain or a blood vessel in a leg.
4 . The method of claim 2 , wherein applying the negative suction pressure to the guide catheter comprises using a syringe.
5 . The method of claim 2 , further comprising torsionally rasping the thrombectomy device including entrapping the thrombus in the plurality of self-expanding bulbs.
6 . The method of claim 2 , wherein the plurality of self-expanding bulbs comprises at least three self-expanding bulbs, at least two self-expanding bulbs of the at least three self-expanding bulbs having different outer diameters in the radially expanded state, and wherein the thrombectomy device comprises:
a plurality of necks longitudinally between and radially inward of the plurality of self-expanding bulbs, and
a distal neck radially inward of a distal-most bulb of the plurality of self-expanding bulbs.
7 . The method of claim 2 , wherein expanding the at least some of the plurality of self-expanding bulbs from the radially compressed state to the radially expanded state comprises expanding the vessel by 0% to 30%.
8 . A method of treating a thrombus in a vessel with combination mechanical thrombectomy and aspiration, the method comprising:
advancing a microcatheter in the vessel;
advancing a thrombectomy device through the microcatheter in the vessel, the thrombectomy device including a woven structure, wherein advancing the thrombectomy device includes crossing the thrombus with a distal end of the woven structure;
expanding a portion of the woven structure from a radially compressed state to a radially expanded state, wherein retracting the microcatheter is at least until a distal end of the microcatheter is proximal to the thrombus;
entrapping the thrombus in at least some of the woven structure;
retracting the microcatheter and the thrombectomy device; and
while retracting the microcatheter and the thrombectomy device, applying negative suction pressure to the vessel.
9 . The method of claim 8 , wherein the vessel comprises a blood vessel in a brain or a blood vessel in a leg.
10 . The method of claim 8 , wherein applying the negative suction pressure to the vessel comprises using a syringe.
11 . The method of claim 8 , further comprising torsionally rasping the thrombectomy device including entrapping the thrombus in the woven structure.
12 . The method of claim 8 , wherein the woven structure comprises at least three self-expanding bulbs, at least two self-expanding bulbs of the at least three self-expanding bulbs having different outer diameters in the radially expanded state, and wherein the thrombectomy device comprises:
a plurality of necks longitudinally between and radially inward of the plurality of self-expanding bulbs, and
a distal neck radially inward of a distal-most bulb of the plurality of self-expanding bulbs.
13 . The method of claim 8 , wherein expanding the portion of the woven structure from the radially compressed state to the radially expanded state comprises expanding the vessel by 0% to 30%.
14 . A method of treating a thrombus in a vessel with combination mechanical thrombectomy and aspiration, the method comprising:
advancing a thrombectomy device in the vessel, wherein advancing the thrombectomy device includes crossing the thrombus;
entrapping the thrombus in the thrombectomy device; and
retracting the thrombectomy device; and
while retracting the thrombectomy device, applying negative suction pressure to the vessel.
15 . The method of claim 14 , wherein the vessel comprises a blood vessel in a brain or a blood vessel in a leg.
16 . The method of claim 14 , wherein applying the negative suction pressure to the vessel comprises using a syringe.
17 . The method of claim 14 , wherein the thrombectomy device comprises a woven structure.
18 . The method of claim 14 , further comprising torsionally rasping the thrombectomy device including entrapping the thrombus in the portion of the thrombectomy device.
19 . The method of claim 14 , wherein the thrombectomy device comprises a woven structure comprising at least three self-expanding bulbs, at least two self-expanding bulbs of the at least three self-expanding bulbs having different outer diameters in the radially expanded state, and wherein the thrombectomy device comprises:
a plurality of necks longitudinally between and radially inward of the plurality of self-expanding bulbs, and
a distal neck radially inward of a distal-most bulb of the plurality of self-expanding bulbs.
20 . The method of claim 19 , wherein the thrombectomy device comprises a delivery device coupled to the woven structure, the delivery device comprising a multi-filament structure.
21 . The method of claim 14 , comprising expanding the vessel by 0% to 30%.