Apparatus for rotating medical devices, systems including the apparatus, and associated methods
A rooter includes a rotatable element, an actuator for causing the rotatable element to rotate, and a coupling feature for rotatably coupling an elongated medical instrument to the rotatable element. The rotatable element may be at least partially contained within the interior of a housing or another element that remains substantially stationary as the actuator causes the rotatable element to rotate. The rooter may be used with a variety of elongated medical instruments, such as wires, mascerators, needles, drill bits, trocars, catheters, tubes and other elongated instruments that are used to enable or effect medical procedures within the body of a subject. The rooter may be used for a variety of purposes, including, without limitation, the introduction of an elongated medical instrument into the body of a subject or its removal from the subject's body; removing, breaking up, or eliminating obstructions (e.g., blood clots, plaques, etc.) from the body of a subject; and obtaining samples from a subject's body.
1. A method for introducing an elongated medical instrument into a body of a subject, comprising:
securing the elongated medical instrument to a rotatable element of a hand-powered rooter, the rooter including the rotatable element rotatable about a longitudinal axis of the rotatable element, an actuator including an internal element hingedly coupled to a pair of spaced apart members located on opposite sides of the internal element, the pair of spaced apart members extending from a manual trigger, an elongated handle, and an intermediate element fixedly attached to a lower portion of the handle and extending transversely from the handle such that the intermediate element is cantilevered from the handle in a distal direction;
wherein the trigger is attached to the pair of spaced apart members at a first end of the trigger and the trigger is pivotably attached to the intermediate element at a second end of the trigger;
manually operating the rooter to cause the elongated medical instrument to spin or oscillate, wherein longitudinal movement of the actuator in a first direction along the longitudinal axis causes rotational movement of the rotatable element to rotate the elongated medical instrument; and
while manually operating the rooter to cause the elongated medical instrument to spin or oscillate, advancing the elongate medical instrument to a desired location within the body of the subject;
wherein the rooter includes a return element configured to return the actuator in a second direction along the longitudinal axis to an initial position, the second direction being opposite the first direction;
wherein the return element is disposed about the rotatable element proximal of the actuator.
2. The method of claim 1 , further comprising:
adjusting spinning or oscillation of the elongated medical instrument based on sensory feedback received through the rooter.
3. The method of claim 1 , wherein securing the elongated medical instrument comprises securing a wire to the rotatable element of the rooter.
4. The method of claim 3 , wherein advancing comprises advancing the wire through a tortuous path, and
wherein manually operating spins or oscillates the wire in a manner that enables a distal end of the wire to follow the tortuous path.
5. The method of claim 1 , wherein manually operating the rooter comprises manually operating the rooter in a manner that enables the elongated medical instrument to advance through a narrow passage without binding a surface defining the narrow passage.
6. The method of claim 1 , wherein manually operating the rooter induces a longitudinal movement in the elongated medical instrument.
7. The method of claim 1 , comprising a first-use technique, thrombosis management, or clearing a catheter or tube.
8. The method of claim 1 , wherein the rotatable element includes an outwardly protruding helical ridge.
9. The method of claim 8 , wherein the internal element of the actuator surrounds the rotatable element.
10. The method of claim 1 , wherein the first direction is a proximal direction and the second direction is a distal direction.
11. The method of claim 1 , wherein an axis about which the pair of spaced apart members pivot relative to the internal element is oriented perpendicular to and intersects the longitudinal axis of the rotatable element.
12. A method for introducing a wire into a body of a subject, comprising:
securing the wire to a rotatable element of a hand-powered rooter;
manually operating the rooter by moving a trigger of the rooter to move an actuator component surrounding the rotatable element of the rooter longitudinally along a longitudinal axis of the rotatable element in a proximal direction to rotate the rotatable element in order to cause the wire to spin or oscillate;
wherein the trigger includes a pair of spaced apart members extending from a first end of the trigger, the pair of spaced apart members being located on opposite sides of the actuator component and hingedly secured to the actuator component, and the trigger is hingedly secured to a handle of the rooter at a second end of the trigger;
wherein moving the trigger of the rooter includes translating the first end of the trigger proximally along the longitudinal axis of the wire to move the actuator component longitudinally relative to the handle of the rooter in the proximal direction;
wherein the rooter includes a return element configured to return the actuator component in a distal direction along the longitudinal axis to an initial position upon release of the trigger by an operator, the return element being disposed about the rotatable element proximal of the actuator component; and
while manually operating the rooter to cause the wire to spin or oscillate, advancing the wire to a desired location within the body of the subject.
13. The method of claim 12 , wherein manually operating the rooter comprises spinning or oscillating the wire in a manner that enables the wire to advance through a tortuous path.
14. The method of claim 12 , further comprising:
while manually operating the rooter to cause the wire to spin or oscillate, breaking up or cutting into an occlusion.
15. The method of claim 12 , wherein movement of the actuator component in the distal direction does not cause the wire to spin or oscillate.
16. A method for introducing an elongated medical instrument into a body lumen of a subject, comprising:
advancing an elongated medical instrument into the body lumen of the patient, the elongated medical instrument being secured to a rotatable element of a hand-powered rooter, the elongated medical instrument extending through a lumen of a cannula, wherein the cannula is coupled to a branched connector, wherein the branched connector includes a first port configured to receive the elongated medical instrument and a second port in fluid communication with the lumen of the cannula;
manually operating the rooter to cause the elongated medical instrument to spin or oscillate, wherein the elongated medical instrument spins or oscillates about a longitudinal axis of the rotatable element in response to longitudinal movement of an actuator of the rooter along the longitudinal axis in a first direction via proximal movement of a first end of a trigger of the rooter;
wherein the first end of the trigger is pivotably attached to the actuator and a second end of the trigger is pivotably attached to an intermediate member extending distally from an elongated handle of the rooter such that the intermediate member is cantilevered from the handle in a distal direction;
wherein a return element surrounds the rotatable element on a proximal side of the actuator, the return element being configured to return the actuator distally to an initial position upon release of the trigger by an operator; and
while manually operating the rooter to cause the elongated medical instrument to spin or oscillate, advancing the elongated medical instrument to a desired location within the body lumen of the subject.
17. The method of claim 16 , wherein longitudinal movement of the actuator rotates the rotatable element.
18. The method of claim 17 , wherein the rotatable element includes an outwardly protruding helical ridge engaging the actuator.
19. The method of claim 16 , wherein manually operating the rooter spins or oscillates the elongated medical instrument in a manner that enables a distal end of the elongated medical instrument to follow the tortuous path.
20. The method of claim 16 , wherein movement of the actuator in the distal direction does not cause the elongated medical instrument to spin or oscillate.