US20090024085A1 — Atherectomy devices, systems, and methods

Claim 1

Independent Claim 57 words

1 . A method comprising: providing a control handle coupled to a catheter, the control handle comprising a deflection control device and a rotation control device, manipulating the deflection control device thereby deflecting a distal portion of the catheter, and manipulating the rotation control device thereby rotating the distal portion of the catheter in an arcuate path.

Claim 2

Dependent Claim 57 words

1 . A method comprising: providing a control handle coupled to a catheter, the control handle comprising a deflection control device and a rotation control device, manipulating the deflection control device thereby deflecting a distal portion of the catheter, and manipulating the rotation control device thereby rotating the distal portion of the catheter in an arcuate path.

Claim 3

Dependent Claim 37 words

2 . A method according to claim 1 : wherein manipulating the deflection control device comprises applying a first force in a first direction to the deflection control device and deflecting the distal portion of the catheter.

Claim 4

Dependent Claim 42 words

3 . A method according to claim 1 : wherein manipulating the rotation control device comprises applying a second force in a desired second direction to the rotation control device and rotating the distal portion of the catheter in an arcuate path.

Claim 5

Dependent Claim 50 words

4 . A method according to claim 1 : wherein manipulating the deflection control device and manipulating the rotation control device comprises manipulating a deflection and rotation control knob for both deflecting the distal portion of the catheter and rotating the distal portion of the catheter in an arcuate path.

Claim 6

Dependent Claim 24 words

5 . A method according to claim 1 : further including introducing the catheter into a blood vessel using an 8Fr or smaller introducer.

Claim 7

Dependent Claim 28 words

6 . A method according to claim 5 : wherein the catheter is sized and configured to allow contrast injection while residing in the 8Fr or smaller introducer.

Claim 8

Dependent Claim 23 words

7 . A method according to claim 5 : wherein introducing includes no more than one introducing the catheter into the blood vessel.

Claim 9

Dependent Claim 20 words

8 . A method according to claim 1 : wherein the catheter is sized and configured for thrombectomy and/or atherectomy.

Claim 10

Dependent Claim 30 words

9 . A method according to claim 1 : wherein the catheter is sized and configured for removing tissue including acute thrombus, organized thrombus, atheroma, fibrous plaque, and calcified plaque.

Claim 11

Dependent Claim 57 words

10 . A method comprising: providing a control handle coupled to a catheter, the control handle comprising a deflection actuator, manipulating the deflection actuator in a first direction, thereby deflecting a distal portion of the catheter, and manipulating the deflection actuator in a second direction, thereby rotating the distal portion of the catheter in an arcuate path.

Claim 12

Dependent Claim 57 words

10 . A method comprising: providing a control handle coupled to a catheter, the control handle comprising a deflection actuator, manipulating the deflection actuator in a first direction, thereby deflecting a distal portion of the catheter, and manipulating the deflection actuator in a second direction, thereby rotating the distal portion of the catheter in an arcuate path.

Claim 13

Dependent Claim 20 words

11 . A method according to claim 10 : wherein the catheter is sized and configured for thrombectomy and/or atherectomy.

Claim 14

Dependent Claim 30 words

12 . A method according to claim 10 : wherein the catheter is sized and configured for removing tissue including acute thrombus, organized thrombus, atheroma, fibrous plaque, and calcified plaque.

Claim 15

Dependent Claim 35 words

13 . A method according to claim 10 : wherein manipulating the deflection actuator in a first direction comprises manipulating the deflection actuator in a distal direction, thereby deflecting a distal portion of the catheter.

Claim 16

Dependent Claim 35 words

14 . A method according to claim 10 : wherein manipulating the deflection actuator in a first direction comprises manipulating the deflection actuator in a proximal direction, thereby deflecting a distal portion of the catheter.

Claim 17

Dependent Claim 76 words

15 . A system comprising: a control handle coupled to a catheter, the control handle comprising a deflection control device and a rotation control device, the deflection control device adapted to deflect a distal portion of the catheter in a radially offset direction from the axis of the catheter, and the rotation control device adapted to rotate the distal portion of the catheter in an arcuate path while the distal portion of the catheter is deflected.

Claim 18

Dependent Claim 76 words

15 . A system comprising: a control handle coupled to a catheter, the control handle comprising a deflection control device and a rotation control device, the deflection control device adapted to deflect a distal portion of the catheter in a radially offset direction from the axis of the catheter, and the rotation control device adapted to rotate the distal portion of the catheter in an arcuate path while the distal portion of the catheter is deflected.

Claim 19

Dependent Claim 59 words

16 . A system according to claim 15 : wherein the deflection control device and the rotation control device comprises a deflection and rotation control knob adapted for both deflection of the distal portion of the catheter and rotation of the distal portion of the catheter in an arcuate path while the distal portion of the catheter is deflected.

Claim 20

Dependent Claim 86 words

17 . A system according to claim 16 : wherein the deflection and rotation control knob is adapted for deflection of the distal portion of the catheter by the application of a first force to the deflection and rotation control knob, and the deflection and rotation control knob is adapted for rotation of the distal portion of the catheter in an arcuate path while the distal portion of the catheter is deflected, by the application of a second force to the deflection and rotation control knob.

Claim 21

Dependent Claim 20 words

18 . A system according to claim 15 : wherein the catheter is sized and configured for thrombectomy and/or atherectomy.

Claim 22

Dependent Claim 30 words

19 . A system according to claim 15 : wherein the catheter is sized and configured for removing tissue including acute thrombus, organized thrombus, atheroma, fibrous plaque, and calcified plaque.

Claim 23

Dependent Claim 151 words

20 . A system comprising: a catheter assembly sized and configured to be introduced into a blood vessel, the catheter assembly including a tissue cutting assembly at or near a distal end of the catheter assembly, the tissue cutting assembly including a rotatable cutter for debulking tissue from the blood vessel, a control handle coupled to the catheter assembly, the control handle including steering means for steering the tissue cutting assembly, rotating means for rotating the rotatable cutter, power means for providing power to the rotating means, the rotating means adapted to rotate the rotatable cutter, and on/off means for controlling the power to the rotating means, and a torque shaft extending from the rotating means to the rotatable cutter, the torque shaft including aspiration means to move cut tissue from the rotatable cutter through the catheter assembly and through at least a portion of the control handle to a receptacle.

Claim 24

Dependent Claim 151 words

20 . A system comprising: a catheter assembly sized and configured to be introduced into a blood vessel, the catheter assembly including a tissue cutting assembly at or near a distal end of the catheter assembly, the tissue cutting assembly including a rotatable cutter for debulking tissue from the blood vessel, a control handle coupled to the catheter assembly, the control handle including steering means for steering the tissue cutting assembly, rotating means for rotating the rotatable cutter, power means for providing power to the rotating means, the rotating means adapted to rotate the rotatable cutter, and on/off means for controlling the power to the rotating means, and a torque shaft extending from the rotating means to the rotatable cutter, the torque shaft including aspiration means to move cut tissue from the rotatable cutter through the catheter assembly and through at least a portion of the control handle to a receptacle.

Claim 25

Dependent Claim 42 words

21 . The system according to claim 20 : wherein the control handle further comprises a handle base portion and a catheter chassis portion, the handle base adapted to provide a rotational force to the torque shaft positioned within the catheter chassis.

Claim 26

Dependent Claim 33 words

22 . A system according to claim 21 : wherein the handle base and catheter chassis are adapted to be coupled together without the use of tools, for operation of the control handle.

Claim 27

Dependent Claim 83 words

23 . A system according to claim 20 : wherein the vessel is chosen from the group consisting of the brachial arteries, the common iliac arteries, the external iliac arteries, the internal iliac arteries, the femoral arteries, the profunda femoris arteries, the deep femoral arteries, the proximal superficial femoral arteries, arteries in the hunter's canal, the popliteal arteries, the posterior tibial arteries, the anterior tibial arteries, the peroneal arteries, the dorsalis pedis arteries, the medial and lateral plantar arteries, and the digital arteries.

Claim 28

Dependent Claim 22 words

24 . A system according to claim 20 : wherein the tissue removal assembly is sized and configured for thrombectomy and/or atherectomy.

Claim 29

Dependent Claim 32 words

25 . A system according to claim 20 : wherein the tissue removal assembly is sized and configured for removing tissue including acute thrombus, organized thrombus, atheroma, fibrous plaque, and calcified plaque.

Claim 30

Dependent Claim 144 words

26 . A system comprising: a catheter assembly sized and configured to be introduced into a blood vessel, the catheter assembly including a tissue cutting assembly at or near a distal end of the catheter assembly, the tissue cutting assembly including a rotatable cutter for debulking the tissue from the blood vessel, a control handle coupled to the catheter assembly, the control handle comprising a deflection control device and a rotation control device, and instructions for use describing the use of the catheter, the instructions comprising the operations of introducing the catheter assembly into the blood vessel and positioning the tissue cutting assembly at or near a site in need of tissue debulking, manipulating the deflection control device thereby deflecting a distal portion of the catheter, and manipulating the rotation control device thereby rotating the distal portion of the catheter in an arcuate path.

Claim 31

Dependent Claim 144 words

26 . A system comprising: a catheter assembly sized and configured to be introduced into a blood vessel, the catheter assembly including a tissue cutting assembly at or near a distal end of the catheter assembly, the tissue cutting assembly including a rotatable cutter for debulking the tissue from the blood vessel, a control handle coupled to the catheter assembly, the control handle comprising a deflection control device and a rotation control device, and instructions for use describing the use of the catheter, the instructions comprising the operations of introducing the catheter assembly into the blood vessel and positioning the tissue cutting assembly at or near a site in need of tissue debulking, manipulating the deflection control device thereby deflecting a distal portion of the catheter, and manipulating the rotation control device thereby rotating the distal portion of the catheter in an arcuate path.

Atherectomy devices, systems, and methods

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