Trajectory guide
First Claim
1. A surgical device comprising:
- a base unit;
an elongated guide stem having a passage therein, a ball attached to one end of the guide stem, said ball having a passage therein, said ball fitting within the base unit, said ball capable of rotating with respect to the base unit; and
a guide stem cable mount associated with said guide stem.
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Accused Products
Abstract
A surgical method and apparatus for accurately aligning the trajectory of, guiding of, and introducing or withdrawal of an instrument is disclosed. The apparatus includes a base which has a movable member movably attached to the base. The movable member has a passage therein which forms a portion of the trajectory path. A positioning stem further includes a first locator and a second locator. The first and second locators are associated with two different portions of the positioning stem so that they are essentially two points on a line. The first and second locators are also locatable by a scanning or imaging system. The positioning stem is removably attached to said movable member and used to position the movable member. Moving the movable member also moves the passage therein to different trajectories. Once the passage within the movable member more or less is aligned with a target within the body, a locking member locks the movable member into a fixed position. The movable member can be moved to different trajectories using a first hydraulic system. A second hydraulic system can be used to introduce or withdraw an instrument to or from the patient. A mechanical advancement tool can be substituted for the second hydraulic system. The surgical instrument may also be provided with a remote portion for controlling the instrument from a remote location. The instrument can also be computer controlled.
133 Citations
31 Claims
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1. A surgical device comprising:
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a base unit;
an elongated guide stem having a passage therein, a ball attached to one end of the guide stem, said ball having a passage therein, said ball fitting within the base unit, said ball capable of rotating with respect to the base unit; and
a guide stem cable mount associated with said guide stem. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 29, 30, 31)
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13. A surgical apparatus comprising:
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a first base unit;
a first elongated guide stem having a passage therein, a ball attached to one end of the guide stem, said ball having a passage therein, said ball fitting within the first base unit, said ball capable of rotating with respect to the first base unit;
a first guide stem cable mount associated with said first elongated guide stem;
a second base unit;
a second elongated guide stem having a passage therein, a ball attached to one end of the guide stem, said ball having a passage therein, said ball fitting within the second base unit, said ball capable of rotating with respect to the second base unit;
a second guide stem cable mount associated with said second elongated guide stem; and
a cable connected at one end to the first guide stem cable mount and connected at the other end to the second guide stem cable mount, wherein the first elongated guide stem moves in response to moving the second elongated guide stem.
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28. A method for introducing a surgical instrument into the body of a patient, said patient positioned in a scanning environment, said method comprising the steps of:
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selecting a target within a patient;
attaching a first base and first movable elongated guide stem to the patient;
connecting the first base and first movable elongated guide stem to a second base and second movable elongated guide stem using cables;
placing a positioning stem within the guide stem, said positioning stem having a first portion readable within the scanning device and a second portion readable within the scanning environment; and
moving a second elongated guide stem with respect to the second base, said second base and said second movable elongated guide stem positioned outside the scanning environment, wherein moving the second elongated guide stem with respect to the second base causes movement of the first movable elongated guide stem with respect to the first base.
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Specification