Low profile instrument immobilizer
First Claim
Patent Images
1. An instrument immobilizer apparatus for immobilizing an instrument relative to a patient, comprising:
- a base having an exterior wall defining a central passage, the base sized and shaped to be disposed about a burr hole of a patient; and
an insert configured to be disposed within the central passage, the insert defining an access opening through the insert and having a first retaining member with a first edge configured to engage the instrument and a second retaining member with a second edge, wherein the first edge and the second edge are configured to engage the instrument;
wherein the first and second retaining members maintain the first edge opposed to the second edge throughout their full range of movement relative to one another;
wherein the first and second retaining members are configured for holding therebetween the instrument extending through the central passage, the access opening, and into the burr hole;
wherein the insert is configured to be rotated when disposed within the central passage of the base;
wherein the first edge is a first beveled edge;
wherein the second edge is a second beveled edge.
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Abstract
This document discusses, among other things, examples of a low profile instrument immobilizer and means for positioning the same. In one example, the low profile instrument immobilizer grasps, secures, and immobilizes an electrode or other instrument that extends through a burr hole in a skull to a target location in a patient'"'"'s brain.
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Citations
37 Claims
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1. An instrument immobilizer apparatus for immobilizing an instrument relative to a patient, comprising:
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a base having an exterior wall defining a central passage, the base sized and shaped to be disposed about a burr hole of a patient; and an insert configured to be disposed within the central passage, the insert defining an access opening through the insert and having a first retaining member with a first edge configured to engage the instrument and a second retaining member with a second edge, wherein the first edge and the second edge are configured to engage the instrument; wherein the first and second retaining members maintain the first edge opposed to the second edge throughout their full range of movement relative to one another; wherein the first and second retaining members are configured for holding therebetween the instrument extending through the central passage, the access opening, and into the burr hole; wherein the insert is configured to be rotated when disposed within the central passage of the base; wherein the first edge is a first beveled edge; wherein the second edge is a second beveled edge. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An instrument immobilizer apparatus for immobilizing an instrument relative to a patient, comprising:
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a base having a wall defining a central passage, the base being sized and hoop-shaped to be disposed about a burr hole of the patient; and an insert separate from and configured to be disposed within the central passage of the base, the insert having; a wall that defines an access opening through the insert; a first retaining member slidably positioned on the wall and within the access opening of the insert and having a first engagement face; and a second retaining member slidably positioned on the wall and within the access opening of the insert and having a second engagement face directed toward the first engagement face; wherein the first and second engagement faces are configured to be moved relative to another and the wall to engage and hold therebetween the instrument extending through the access opening of the insert and the central passage of the base; wherein the first and second engagement faces have respective first and second beveled edges. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. An instrument immobilizer apparatus for immobilizing an instrument relative to a patient, comprising:
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a hoop-shaped base having a wall defining a central passage and a grooved surface disposed upon an intermediate surface therein, the hoop-shaped base sized and shaped to be disposed about a cranial burr hole of the patient; and an insert rotatably received within the central passage, the insert having; a body having an insert wall defining an access opening; at least one detent disposed about an insert surface and projecting to a side of the body; and a first retaining member and a second retaining member, the first and second retaining members slidable toward and away from one another within the body defining the access opening and relative to the insert wall, the first retaining member having a first engagement face with a first semicircular surface defined in the first engagement face, the second retaining member having a second engagement face with a second semicircular surface defined in the second engagement face, wherein the first and second engagement faces are configured for holding therebetween at the first and second semicircular surfaces the instrument extending through the central passage into the burr hole; wherein the at least one detent is configured to engage the grooved surface; wherein the first and second engagement faces have respective first and second beveled edges. - View Dependent Claims (28, 29, 30)
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31. A method of securing a medical instrument on a patient comprising:
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mounting a hoop-shaped base around a cranial burr hole at least by passing a fastener through an outer passage, wherein the hoop-shaped base is configured such that a portion of the medical instrument may extend through a central passage of the hoop-shaped base; moving an insert having an insert wall separate from the hoop-shaped base toward the central passage, the insert further having a first retaining member with a first engagement face and a second retaining member with a second engagement face, wherein the first engagement face is maintained opposed to the second engagement face throughout movement of the first engagement face and the second engagement face; mounting the insert within the central passage; and moving the first retaining member and second retaining member toward one another and relative to the insert wall to secure the medical instrument through an access opening of the insert; wherein moving the first and second retaining members toward one another includes sliding at least one of the first or second retaining members relative to the insert wall towards the other of the first or second retaining member; wherein the first and second engagement faces have respective first and second beveled edges. - View Dependent Claims (32, 33, 34, 35, 36, 37)
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Specification