Active arterial embolization filter

• US 20030212428A1
• Filed: 11/26/2002
• Published: 11/13/2003
• Est. Priority Date: 05/30/2000
• Status: Active Grant

• Current Assignee: Jacob Richter
• Original Assignee: Jacob Richter
• Inventors: Richter, Jacob
• Granted Patent: US 7,169,166 B2
• Time in Patent Office: Days
• US Class Current: 606/200
• CPC Class Codes: A61B 2017/00398 using powered actuators, e.g. stepper motors, solenoids
• CPC Class Codes: A61B 2017/22075 with motorized advancing or retracting means
• CPC Class Codes: A61F 2/01 Filters implantable into blood vessels
• CPC Class Codes: A61F 2230/0006 circular

Abstract

Apparatus for collecting emboli flowing in a lumen. A motor has a longitudinal bore, a friction area within the longitudinal bore, and a guide wire disposed within the longitudinal bore. The guide wire and friction area of the motor are sized and adapted to contact each other and impart friction between the friction area and the guide wire to permit the motor to rotate around the guide wire. A thrombus collecting gutter is attached to the motor. Paddles are attached to motor and are adapted to initiate a spiral blood flow when the motor rotates. The spiral blood flow causes thrombii in the blood to be deflected towards the internal wall of the lumen and be trapped in a thrombus collecting gutter which is positioned on the motor downstream of the paddles.

Claims

1. An apparatus for collecting emboli flowing in a lumen, comprising:

a) a motor having a proximal end and a distal end, the motor having a longitudinal bore, the motor provided with a motor friction area disposed within the longitudinal bore, the motor friction area adapted to permit selective movement of the motor around the longitudinal axis of a guide wire disposed in the longitudinal bore;

b) a guide wire having a longitudinal axis disposed within the longitudinal bore, the guide wire and the longitudinal bore sized and adapted to impart friction between the friction area of the motor and the guide wire in an amount sufficient to permit the motor to change position relative to the guide wire by rotating around the longitudinal axis of the guide wire when the motor is energized;

c) a plurality of selectively deployable paddles attached to the motor, the paddles adapted for selective movement between a first stored position and a second deployed position;

the paddles further adapted to initiate a spiral blood flow of blood flowing through a lumen to deflect emboli towards the internal wall of the lumen when the paddles are in the second deployed position; and

d) a thrombus collecting gutter having a closed bottom end and an open top end, the gutter adapted for selective movement between a first stored position and a second deployed position, the gutter disposed on the guide-wire distal to the paddles when the gutter and the paddles are in the deployed second position with the open top end of the gutter disposed between the closed bottom end of the gutter and the paddles when the gutter is disposed in the deployed second position; and

e) means for selectively energizing the motor and activating the motor friction area.

2. The apparatus of claim 1, further comprising a biasing means to bias the guide wire against the friction area.

3. The apparatus of claim 2, wherein the biasing means is a leaf spring.

4. The apparatus of claim 1, wherein the gutter is further adapted so that the top end may be selectively opened and closed and is provided with means for selectively opening and closing the top end of the gutter.

5. The apparatus of claim 1, wherein the motor is cylindrically shaped.

6. An apparatus for collecting emboli flowing in a lumen, comprising:

a) a motor having a proximal end and a distal end, the motor having a longitudinal bore, the motor provided with a motor friction area disposed within the longitudinal bore adapted to permit selective movement of the motor around the longitudinal axis of a guide wire disposed in the longitudinal bore;

b) a guide wire having a longitudinal axis disposed within the longitudinal bore, the guide wire and the longitudinal bore sized and adapted to impart friction between the friction area of the motor and the guide wire in an amount sufficient to permit the motor to change position relative to the guide wire by rotating around the longitudinal axis of the guide wire when the motor is energized;

c) a plurality of selectively deployable paddles attached to the motor, the paddles adapted for selective movement between a first stored position and a second deployed position;

the paddles further adapted to initiate a spiral blood flow of blood flowing through a lumen to deflect emboli towards the internal wall of the lumen when the paddles are in the second deployed position; and

d) a thrombus collecting gutter having a closed bottom end and a top end adapted to be selectively opened and closed, the gutter adapted for selective movement between a first stored position and a second deployed position, the gutter disposed on the guide-wire distal to the paddles when the gutter and the paddles are in the deployed second position with the top end of the gutter disposed between the closed bottom end of the gutter and the paddles when the gutter is disposed in the deployed second position;

e) means for selectively moving the paddles between the first stored position and the second deployed position;

f) means for selectively moving the thrombus collecting gutter between the first stored position and the second deployed position; and

g) means for selectively energizing the motor and activating the motor friction area to permit the motor to be selectively moved around the longitudinal axis of the guide wire.

7. The apparatus of claim 6, further comprising a biasing means to bias the guide wire against the friction area.

8. The apparatus of claim 7, wherein the biasing means is a leaf spring.

9. The apparatus of claim 6, wherein the means for selectively moving the paddles between the first stored position and the second deployed position;

and the means for selectively moving the thrombus collecting gutter between the first stored position and the second deployed position is a locking wire.

10. The apparatus of claim 6, wherein the means for selectively moving the paddles between the first stored position and the second deployed position;

and the means for selectively moving the thrombus collecting gutter between the first stored position and the second deployed position is a sheath adapted for movement along the longitudinal axis of the guidewire between a first position which retains the paddles and the gutter in the first or stored position and a second position which permits the paddles and the gutter to move to the second or deployed position.

11. The apparatus of claim 6, wherein the gutter is further adapted so that the open top end of the gutter may be selectively opened and closed and is provided with a means for selectively opening and closing the top end.

12. The apparatus of claim 11, wherein the means for selectively opening and closing the top end of the gutter is a trip wire.

13. An apparatus for collecting emboli flowing in a lumen, comprising:

a) a housing having a proximal end and a distal end, the housing having a longitudinal bore sized and adapted to permit selective movement of the housing along the longitudinal axis of a guide wire disposed in the longitudinal bore;

b) a guide wire having a longitudinal axis disposed within the longitudinal bore;

c) a selectively deployable spiral blood flow initiator attached to the housing and adapted for selective movement between a first stored position and a second deployed position, the spiral blood flow initiator sized and adapted to initiate a spiral blood flow of blood flowing through a lumen and deflect emboli towards the internal wall of the lumen when the spiral blood flow initiator is in the second deployed position;

d) a thrombus collecting gutter having a closed bottom end and an open top end, the gutter adapted for selective movement between a first '"'"'stored position and a second deployed position, the gutter disposed on the housing distal to the spiral blood flow initiator with the open top end of the gutter disposed between the closed bottom end of the gutter and the spiral blood flow initiator when the gutter is disposed in the deployed second position;

e) means for selectively moving the spiral blood flow initiator between the first stored position and the second deployed position; and

f) means for selectively moving the thrombus collecting gutter between the first stored position and the second deployed position.

14. The apparatus of claim 13, wherein the gutter is further adapted so that the open top end may be selectively opened and closed and is provided with means for selectively opening and closing the top end of the gutter.

15. The apparatus of claim 14, wherein the means for selectively opening and closing the top end of the gutter is a trip wire.

16. The apparatus of claim 13, wherein the:

means for selectively moving the spiral blood flow initiator between the first stored position and the second deployed position; and

the means for selectively moving the thrombus collecting gutter between the first stored position and the second deployed position is a motor attached to the spiral blood flow initiator and the thrombus collecting gutter, the motor having a proximal end and a distal end and a longitudinal bore, the motor provided with a motor friction area disposed within the longitudinal bore adapted to permit selective movement of the motor around the longitudinal axis of a guide wire disposed in the longitudinal bore.

17. The apparatus of claim 13, wherein the means for selectively moving the spiral blood flow initiator between the first stored position and the second deployed position;

and the means for selectively moving the thrombus collecting gutter between the first stored position and the second deployed position comprises a locking wire.

18. The apparatus of claim 13, wherein the means for selectively moving the spiral blood flow initiator between the first stored position and the second deployed position;

and the means for selectively moving the thrombus collecting gutter between the first stored position and the second deployed position comprises a sheath adapted for movement along the longitudinal axis of the guidewire between a first position which retains the spiral blood flow initiator and the gutter in the first or stored position and a second position which permits the paddles and the gutter to move to the second or deployed position.

19. A method of collecting emboli in a bloodstream, comprising the steps of:

a) constructing an apparatus comprising;

a) a motor having a proximal end and a distal end, the motor having a longitudinal bore, the motor provided with a motor friction area disposed within the longitudinal bore, the motor friction area adapted to permit selective movement of the motor around the longitudinal axis of a guide wire disposed in the longitudinal bore;

b) a guide wire having a longitudinal axis disposed within the longitudinal bore, the guide wire and the longitudinal bore sized and adapted to impart friction between the friction area of the motor and the guide wire in an amount sufficient to permit the motor to change position relative to the guide wire by rotating around the longitudinal axis of the guide wire when the motor is energized;

c) a plurality of selectively deployable paddles attached to the motor, the paddles adapted for selective movement between a first stored position when the motor is not energized to a second deployed position when the motor is energized;

the paddles further adapted to initiate a spiral blood flow of blood flowing through a lumen and deflect emboli towards the internal wall of the lumen when the paddles are in the second deployed position; and

d) a thrombus collecting gutter having a closed bottom end and an open top end, the gutter adapted for selective movement between a first stored position when the motor is not energized to a second deployed position when the motor is energized, the gutter disposed on the guide-wire distal to the paddles when the gutter and the paddles are in the deployed second position with the open top end of the gutter disposed between the closed bottom end of the gutter and the paddles when the gutter is disposed in the deployed second position;

b) disposing the apparatus in the target area of the lumen being treated;

c) energizing the motor to activate the motor friction area so that the motor turns around the longitudinal axis of the guide wire and the paddles and the gutter move from the first stored position to the second deployed position;

d) allowing the device to remain in the target area for a period of time sufficient for the specific treatment;

e) de-energizing the motor to deactivate the motor friction area so that the motor stops turning around the longitudinal axis of the guide wire and the paddles and the gutter move from the second deployed position to the first stored position; and

f) removing the apparatus from the target area of the lumen being treated.

20. The method of claim 19 further comprising the step between step d) and f) of closing the top end of the gutter.

21. The method of claim 19, further comprising the step between steps d) and e) of removing the collected emboli from the gutter before the gutter is moved from the second deployed position to the first stored position.

22. A method of collecting emboli in a bloodstream, comprising the steps of:

a) constructing an apparatus comprising;

a) a motor having a proximal end and a distal end, the motor having a longitudinal bore, the motor provided with a motor friction area disposed within the longitudinal bore adapted to permit selective movement around the longitudinal axis of a guide wire disposed in the longitudinal bore;

b) a guide wire having a longitudinal axis disposed within the longitudinal bore, the guide wire and the longitudinal bore sized and adapted to impart friction between the friction area of the motor and the guide wire in an amount sufficient to permit the motor to change position relative to the guide wire by rotating around the longitudinal axis of the guide wire when the motor is energized;

c) a plurality of selectively deployable paddles attached to the motor, the paddles adapted for selective movement between a first stored position and a second deployed position;

the paddles further adapted to initiate a spiral blood flow of blood flowing through a lumen and deflect emboli towards the internal wall of the lumen when the paddles are in the second deployed position;

d) a thrombus collecting gutter having a closed bottom end and a top end adapted to be selectively opened and closed, the gutter adapted for selective movement between a first stored position when the motor friction area is not energized to a second deployed position when the motor friction area is energized, the gutter disposed on the guide wire distal to the paddles when the gutter and the paddles are in the deployed second position with the top end of the gutter disposed between the closed bottom end of the gutter and the paddles when the gutter is disposed in the deployed second position;

e) means for selectively moving the paddles between the first stored position and the second deployed position;

f) means for selectively moving the thrombus collecting gutter between the first stored position and the second deployed position;

g) means for selectively opening and closing the top end of the gutter; and

h) means for selectively energizing the motor and activating the motor friction area to permit the motor to be selectively moved around the longitudinal axis of the guide wire;

b) disposing the apparatus in the target area of the lumen to be treated;

c) activating the means for selectively moving the paddles to move the paddles to the second or deployed position;

d) activating the means for selectively moving the thrombus collecting gutter to move the thrombus collecting gutter to the second or deployed position;

e) energizing the motor to activate the motor friction area so that the motor turns around the longitudinal axis of the guide wire;

f) allowing the device to remain in the target area for a period of time sufficient for the specific treatment;

g) activating the means for selectively opening and closing the top end of the gutter to close the top end of the gutter;

h) de-energizing the motor to deactivate the motor friction area so that the motor stops revolving around the longitudinal axis of the guide wire;

i) activating the means for selectively moving the paddles to move the paddles to the first or stored position;

j) activating the means for selectively moving the thrombus collecting gutter to move the gutter to the first or stored position; and

k) removing the apparatus from the target area of the lumen being treated.

23. A method of collecting emboli in a bloodstream, comprising the steps of:

a) constructing an apparatus comprising;

a) a housing having a proximal end and a distal end, the housing having a longitudinal bore adapted to permit selective movement of the housing along the longitudinal axis of a guide wire disposed in the longitudinal bore;

b) a guide wire having a longitudinal axis disposed within the longitudinal bore;

c) a selectively deployable spiral blood flow initiator attached to the housing and adapted for selective movement between a first stored position and a second deployed position, the spiral blood flow initiator adapted to initiate a spiral blood flow of blood flowing through a lumen and deflect emboli towards the internal wall of the lumen when the spiral blood flow initiator is in the second deployed position;

d) a thrombus collecting gutter having a closed bottom end and an open top end, the gutter adapted for selective movement between a first stored position and a second deployed position, the gutter disposed on the guide wire distal to the spiral blood flow initiator and thrombus deflector when the spiral blood flow initiator and thrombus deflector and the gutter are in the deployed second position with the open top end of the gutter disposed between the closed bottom end of the gutter and the spiral blood flow initiator and thrombus deflector when the gutter is disposed in the deployed second position;

e) means for selectively moving the spiral blood flow initiator between the first stored position and the second deployed position; and

f) means for selectively moving the thrombus collecting gutter between the first stored position and the second deployed position;

b) disposing the apparatus in the target area of the lumen being treated;

c) activating the means for moving the spiral blood flow initiator to move the spiral blood flow initiator from the first stored position to the second deployed position;

d) activating the means for moving the thrombus collecting gutter to move the thrombus collecting gutter from the first stored position to the second deployed position;

e) allowing the device to remain in the target area for a period of time sufficient for the specific treatment;

f) activating the means for moving the spiral blood flow initiator to move the spiral blood flow initiator from the second deployed position to the first stored position;

g) activating the means for moving the thrombus collecting gutter to move the thrombus collecting gutter from the second deployed position to the first stored position; and

h) removing the apparatus from the target area of the lumen being treated.

24. The method of claim 23, further comprising the step, between steps d) and g) of closing the top end of the gutter.

25. The method of claim 23, further comprising the step between steps e) and g) of removing the collected emboli from the gutter before the gutter is moved from the second deployed position to the first stored position.