Trajectory Guide With Instrument Immobilizer
AssigneeMedtronic, Inc.
InventorsKari Parmer, Thomas I. Miller, John David
Life of this patent
Estimating the term…
Abstract
A trajectory guide assembly that guides an instrument relative to a patient includes a mounting seat configured to be supported by the patient. The assembly also includes a trajectory member moveably supported by the mounting seat. The trajectory member defines a trajectory passage. Also, the assembly includes a cap member moveably supported by the trajectory member. The cap member defines a cap opening, and the cap member is selectively moveable to a first position relative to the trajectory member to retain the instrument in both the cap opening and the trajectory passage. Additionally, the cap member is selectively moveable to a second position relative to the trajectory member to release the instrument.
Claims20
A trajectory guide assembly that guides an instrument relative to a patient, the trajectory guide assembly comprising:
- a mounting seat configured to be supported by the patient;
- a trajectory member moveably supported by the mounting seat, the trajectory member defining a trajectory passage;
- and
- a cap member moveably supported by the trajectory member, the cap member defining a cap opening, the cap member selectively moveable to a first position relative to the trajectory member to retain the instrument in both the cap opening and the trajectory passage, and the cap member selectively moveable to a second position relative to the trajectory member to release the instrument.
A trajectory guide assembly that guides an instrument relative to a patient, the trajectory guide assembly comprising:
- a mounting seat configured to be supported by the patient, the mounting seat including a hemispherical seat portion defining a seat opening passing therethrough;
- a ball member rotatably supported within the hemispherical seat portion, the ball member defining a trajectory passage, the trajectory passage and the seat opening configured to simultaneously receive the instrument;
- and
- a cap member that is moveably supported by the ball member, the cap member defining a cap opening, wherein the cap member is selectively moveable to a first position relative to the ball member to retain the instrument in each of the cap opening, the trajectory passage, and the seat opening, and the cap member is selectively moveable to a second position relative to the ball member to release the instrument.
A method for guiding an instrument relative to a patient comprising:
- supporting a mounting seat on the patient;
- supporting a trajectory member on the mounting seat;
- rotating the trajectory member relative to the mounting seat to point an axis of a trajectory passage toward a target in the patient;
- moving a cap member relative to the trajectory member to expose the trajectory passage through an opening in the cap member;
- introducing the instrument through the opening in the cap member, the trajectory passage, and into the patient toward the target;
- and
- moving the cap member relative to the trajectory member to retain the instrument in both the opening and the trajectory passage and between the cap member and the trajectory member.
A trajectory guide assembly that guides an instrument relative to a patient, the trajectory guide assembly comprising:
- a mounting seat configured to be supported by the patient, the mounting seat including a flange, the flange defining a hole that receives a fastener for selectively securing the mounting seat to the patient, the mounting seat further including a hemispherical seat portion that defines a seat opening;
- a spherical ball member rotatably supported within the hemispherical seat portion, the ball member defining a trajectory passage, the trajectory passage having a width that is less than a width of the seat opening;
- a first set screw that extends through the mounting seat and selectively secures the spherical ball member in a fixed position relative to the mounting seat;
- a cap member that is slidably supported by the ball member, the cap member defining a cap opening and a slot, the cap opening having a width that is less than a width of the trajectory passage;
- and
- a second set screw that is moveably received in the slot and that selectively secures the cap member in a fixed position relative to the ball member, the slot limiting movement of the cap member relative to the ball member, the cap member selectively moveable to a first position relative to the ball member to retain the instrument in each of the seat opening, the trajectory passage, and the cap opening and between the cap member and the trajectory member, the cap member selectively moveable to a second position relative to the ball member to release the instrument.
Dependencies are inferred from the claim text.