Thrombectomy and soft debris removal device
First Claim
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1. A flexible catheter system for clearing an accumulation of occlusive material from a vessel, duct or lumen in a living being, said flexible catheter system comprising:
- a catheter body having a proximal end, a distal end, a central lumen, and a guidewire lumen that runs side-by-side the central lumen from the proximal end to near the distal end;
a rotary helical aspiration pump, contained within the central lumen in the catheter body, wherein the rotary helical aspiration pump has a proximal end and a distal end, wherein the rotary helical aspiration pump comprises an elongate cylindrical core and a helical member that is secured to an outer surface of the core along an entire axial length of the helical member; and
a working head having a distal end, and a proximal end located near the distal end of the rotary helical aspiration pump, wherein the working head comprises a cap having a solid outer wall, wherein the helical member extends into the working head and distally beyond a plurality of inlet ports in the walls of the cap, wherein the cap is generally aligned and continuous with the catheter body and encloses and separates the distal end of the rotary helical aspiration pump from the outside environment except for the plurality of inlet ports which are sized based on a desired suction velocity and an amount of material desired to enter into the cap as the helical member rotates within the central lumen and the working head, wherein the guidewire lumen terminates near the working head, wherein the helical member extends beyond the termination of the guidewire lumen, and wherein the working head comprises a tapered flexible atraumatic tip that is at the very distal end of the catheter system, the tip having a tip lumen at the distal end that is separate from the guidewire lumen such that a guidewire may exit the guidewire lumen, pass alongside the working head and then pass through the tip lumen.
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Abstract
A device suitable for removing material from a living being is provided, featuring an infusate pump, and an aspiration pump, both powered by a motor. The aspiration pump and infusate pump preferably feature a helical pumping mechanism, and operate at a high rate of rotation, thereby ensuring adequate pumping performance and flexibility. Additionally, a narrow crossing profile is maintained, ensuring that the device may reach more tortuous regions of the vasculature.
162 Citations
47 Claims
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1. A flexible catheter system for clearing an accumulation of occlusive material from a vessel, duct or lumen in a living being, said flexible catheter system comprising:
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a catheter body having a proximal end, a distal end, a central lumen, and a guidewire lumen that runs side-by-side the central lumen from the proximal end to near the distal end; a rotary helical aspiration pump, contained within the central lumen in the catheter body, wherein the rotary helical aspiration pump has a proximal end and a distal end, wherein the rotary helical aspiration pump comprises an elongate cylindrical core and a helical member that is secured to an outer surface of the core along an entire axial length of the helical member; and a working head having a distal end, and a proximal end located near the distal end of the rotary helical aspiration pump, wherein the working head comprises a cap having a solid outer wall, wherein the helical member extends into the working head and distally beyond a plurality of inlet ports in the walls of the cap, wherein the cap is generally aligned and continuous with the catheter body and encloses and separates the distal end of the rotary helical aspiration pump from the outside environment except for the plurality of inlet ports which are sized based on a desired suction velocity and an amount of material desired to enter into the cap as the helical member rotates within the central lumen and the working head, wherein the guidewire lumen terminates near the working head, wherein the helical member extends beyond the termination of the guidewire lumen, and wherein the working head comprises a tapered flexible atraumatic tip that is at the very distal end of the catheter system, the tip having a tip lumen at the distal end that is separate from the guidewire lumen such that a guidewire may exit the guidewire lumen, pass alongside the working head and then pass through the tip lumen. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A flexible catheter system for clearing an accumulation of occlusive material from a vessel, duct or lumen in a living being, said flexible catheter system comprising a driveshaft having a proximal and a distal end, a source of rotary power, a helical aspiration pump and a helical infusate pump;
- wherein said driveshaft is operatively connected to a source of rotary power and said driveshaft serves to actuate rotation for both;
a. a helical aspiration pump serving to draw material in a proximal direction out of the living being wherein the helical aspiration pump comprises an aspiration catheter body that is configured to be inserted into a body lumen, and; b. a helical infusate pump serving to deliver infusate fluid in a distal direction into the living being, wherein the infusate pump comprises an infusate catheter body that, is separate from the aspiration catheter body and that is configured to remain outside a body lumen; wherein said helical aspiration pump is operatively attached to said distal end of said driveshaft, and said helical infusate pump is operatively attached to said proximal end of said driveshaft such that there is no overlap between windings of the helical aspiration pump and windings of the helical infusate pump. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
- wherein said driveshaft is operatively connected to a source of rotary power and said driveshaft serves to actuate rotation for both;
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38. A flexible catheter system for clearing an accumulation of occlusive material from a vessel, duct or lumen in a living being, said flexible catheter system comprising:
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a catheter body having a proximal end, a distal end, a central lumen, and an external guidewire lumen side-by-side with the central lumen; a rotary helical aspiration pump contained within the central lumen in the catheter body, wherein the rotary helical aspiration pump has a proximal end and a distal end, wherein the aspiration pump comprises an elongate cylindrical core and a helical coil member that is secured to an outer surface of the core along an entire axial length of the helical member; and a working head having a distal end and a proximal end located near the distal end of the rotary helical aspiration pump, wherein the working head comprises a cap having a solid outer wall, wherein the helical coil member extends into the working head and beyond a plurality of inlet ports in the walls of the cap, wherein the cap is generally aligned and continuous with the catheter body and encloses and separates the distal end of the rotary helical aspiration pump from the outside environment except for the plurality of inlet ports which are sized based on a desired suction velocity and an amount of material desired to enter into the cap as the helical coil member rotates within the central lumen and the working head, wherein the guidewire lumen terminates near the working head, wherein the helical coil member extends distally beyond the termination of the guidewire lumen, and wherein the working head comprises a tip that is at the very distal end of the catheter system, the tip having a tip lumen at the distal end that is separate from the guidewire lumen such that a guidewire may exit the guidewire lumen, pass alongside the working head and then pass through the tip lumen; and wherein the catheter body has a size of 3-8 French. - View Dependent Claims (39, 40, 41)
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42. A flexible catheter system for clearing an accumulation of occlusive material from a vessel, duct or lumen in a living being, said flexible catheter system comprising:
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a catheter body having a proximal end, a distal end and a central lumen and an external guidewire lumen side-by-side with the central lumen; a rotary helical aspiration pump contained within the central lumen in the catheter body, wherein the rotary helical aspiration pump has a proximal end and a distal end, wherein the aspiration pump comprises an elongate cylindrical core and a helical member that is secured to an outer surface of the core along an entire axial length of the helical member; and a working head having a distal end and a proximal end located near the distal end of the rotary helical aspiration pump, wherein the working head comprises a cap having a solid wall, wherein the helical coil member extends into the working head and distally beyond a plurality of inlet ports in the walls of the cap, wherein the cap is generally aligned and continuous with the catheter body and encloses and separates the distal end of the rotary helical aspiration pump from the outside environment except for the plurality of inlet ports which are sized based on a desired suction velocity and an amount of material desired to enter into the cap as the helical member rotates within the central lumen and the working head, wherein the working head further comprises a tapered flexible atraumatic tip having a short tip lumen at the distal end that is configured to receive a guidewire. - View Dependent Claims (43, 44, 45, 46, 47)
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Specification