Apparatus for rotating medical devices, systems including the apparatus, and associated methods
View Patent ↗A rooter includes a rotatable element, an actuator for causing the rotatable element to rotate, and a coupling feature for rotatably coupling an elongate 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 elongate medical instruments, such as needles, drill bits, trocars, wires, catheters, tubes, and other elongate 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 elongate 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 rooter for manually spinning an elongate medical instrument with one hand, comprising:
a cylindrical housing with a length and an elongated slot extending along the length;
a rotatable element within an interior of the cylindrical housing, the rotatable element extending through an entirety of the length of the cylindrical housing, the rotatable element comprising a cylindrical element with a rotation facilitator comprising a helical ridge protruding from a surface of the cylindrical element, the helical ridge extending along a length of the interior of the cylindrical housing;
a coupling feature on the rotatable element for rotatably engaging an elongate medical instrument;
an actuator configured to enable rotation of the rotatable element with one hand, including:
a cylindrical element residing within the cylindrical housing, the cylindrical element:
surrounding the rotatable element;
configured to be translated along at least a portion of a length of the rotatable element through a length of the interior of the cylindrical housing;
including an aperture defining an interior surface of the cylindrical element, the interior surface defining a drive feature that complementarily engages the helical ridge of the rotation facilitator of the rotatable element and is configured to cause the rotatable element to rotate as the cylindrical element of the actuator is translated along at least a portion of the length of the rotatable element;
an intermediate portion of the actuator extending from the cylindrical element and through the elongated slot of the cylindrical housing; and
an external element:
secured to the intermediate portion of the actuator outside of the cylindrical housing;
including a trigger protruding from the cylindrical housing;
configured to receive a digit of a hand of an individual;
configured to be translated along the length of the cylindrical housing by the digit; and
configured to translate the intermediate portion of the actuator along the elongated slot in the cylindrical housing and to translate the cylindrical element of the actuator along at least a portion of the length of the interior of the cylindrical housing;
a coiled spring within the cylindrical housing and surrounding the rotatable element, a proximal end of the coiled spring abutting the cylindrical housing at a proximal end of an interior of the cylindrical housing, a distal end of the coiled spring abutting a proximal side of the cylindrical element of the actuator to apply a distally oriented biasing force against the cylindrical element of the actuator; and
a handle fixedly secured to and protruding from a proximal location of the cylindrical housing on a same side of a circumference of the cylindrical housing as the external element of the actuator;
a conduit extending through a length of the rotatable element and communicating with a distal end and a proximal end of the rooter for receiving the elongate medical instrument, wherein the rooter is configured to spin the elongate medical instrument during or separately from longitudinal movement of the elongate medical instrument.
2. The rooter of claim 1 , further comprising:
a retention element at an end of the conduit configured to receive a portion of the elongate medical instrument and configured to engage an outer surface of the elongate medical instrument to hold at least the portion of the elongate medical instrument in place within the conduit.
3. A system for rotating an elongate medical instrument, comprising:
an elongate medical instrument including a distal end for insertion into the body of a subject and a proximal end; and
a rooter configured for manual operation and including:
a cylindrical housing with a length and an elongated slot extending along the length;
a rotatable element within an interior of the cylindrical housing, the rotatable element extending through an entirety of the length of the cylindrical housing, the rotatable element comprising a cylindrical element with a rotation facilitator comprising a helical ridge protruding from a surface of the cylindrical element, the helical ridge extending along a length of the interior of the cylindrical housing;
a coupling feature on the rotatable element for rotatably engaging an elongate medical instrument;
an actuator configured to enable rotation of the rotatable element with one hand, including:
a cylindrical element residing within the cylindrical housing, the cylindrical element:
surrounding the rotatable element;
configured to be translated along at least a portion of a length of the rotatable element through a length of the interior of the cylindrical housing;
including an aperture defining an interior surface of the cylindrical element, the interior surface defining a drive feature that complementarily engages the helical ridge of the rotation facilitator of the rotatable element and is configured to cause the rotatable element to rotate as the cylindrical element of the actuator is translated along at least a portion of the length of the rotatable element;
an intermediate portion of the actuator extending from the cylindrical element and through the elongated slot of the cylindrical housing; and
an external element:
secured to the intermediate portion of the actuator outside of the cylindrical housing;
including a trigger protruding from the cylindrical housing;
configured to receive a digit of a hand of an individual;
configured to be translated along the length of the cylindrical housing by the digit; and
configured to translate the intermediate portion of the actuator along the elongated slot in the cylindrical housing and to translate the cylindrical element of the actuator along at least a portion of the length of the interior of the cylindrical housing;
a coiled spring within the cylindrical housing and surrounding the rotatable element, a proximal end of the coiled spring abutting the cylindrical housing at a proximal end of an interior of the cylindrical housing, a distal end of the coiled spring abutting a proximal side of the cylindrical element of the actuator to apply a distally oriented biasing force against the cylindrical element of the actuator; and
a handle fixedly secured to and protruding from a proximal location of the cylindrical housing on a same side of a circumference of the cylindrical housing as the external element of the actuator;
a conduit extending through a length of the rotatable element and communicating with a distal end and a proximal end of the rooter for receiving the elongate medical instrument, wherein the rooter is configured to rotate the elongate medical instrument during or separately from longitudinal movement of the elongate medical instrument.
4. The system of claim 3 , wherein the elongate medical instrument comprises at least one of a needle, a drill bit, a trocar, a wire, a catheter, and a tube.
5. The system of claim 3 , wherein the rotatable element is configured to enable a proximal end of the elongate medical instrument to extend proximally beyond the rooter.
6. The rooter of claim 3 , further comprising:
a retention element at an end of the conduit configured to receive a portion of the elongate medical instrument and configured to engage an outer surface of the elongate medical instrument to hold at least the portion of the elongate medical instrument in place within the conduit.
7. The system of claim 6 , wherein the elongate medical instrument comprises a catheter, a wire, a needle, a drill bit or a trocar.