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EP0495488A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Surgical drill guide

Assignee: MTG Divestitures LLC
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Filing: 1992-01-15
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Granted: —
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Expires: 2012-01-15
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Abstract

Abstract A drill guide for use in surgical procedures, especially in implanting spinal fixation devices is provided, having an extended handle portion (1) in articulated relationship to a radiolucent drill guide holder (5). A drill guide tube (6) is mounted in the drill guide holder, and has an inwardly chamfered end (7) for gaining a positive footing in the area to be drilled.

Inventors

  • 👤 Martin H. Krag
  • 👤 John S. Crombie

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-25 21:53
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/16; A61B17/17; A61B17/1703; A61B17/1739; A61B17/1757; A61B2017/00831; A61B2017/00902

Claims Analysis

Total Claims: 15
Claim 1
Independent Claim 79 words
A drill guide, comprising: a tubular member having an inner and an outer wall, a first end portion, and a second end portion for anchoring said tubular member on a surface in the area of a location to be drilled, said second end portion having an internally chamfered surface extending from the outer wall at said second end of said tubular member, toward said first end portion of said tubular member, to the inner wall of said tubular member.
Claim 2
Dependent Claim 34 words
The drill guide of claim 1 wherein said chamfered end portion has a plurality of concave recesses, and wherein junctures between adjacent concave recesses form sharp edges ending in points at said second end.
Claim 3
Dependent Claim 71 words
A drill guide for use in surgical procedures in incisions in a patient, comprising: a tubular member having first and second end portions and inner and outer walls, for guiding a drill bit to a desired location for drilling; and articulated connecting means for joining said tubular member to an extended handle, wherein said connecting means allows for adjusting the orientation of said tubular member with respect to said extended handle.
Claim 4
Dependent Claim 52 words
The drill guide of claim 3, wherein said articulated connecting means comprises a radiolucent drill guide holder for spacing other drill guide components away from said tubular member and avoiding interference in radiographic images taken while using the drill guide, said holder connected to the first end portion of said tubular member.
Claim 5
Dependent Claim 66 words
The drill guide of claim 3, wherein the second end portion of said tubular member has an internally chamfered surface extending from the outer wall of said tubular member at said second end toward the first end of said tubular member, to the inner wall of said tubular member, for anchoring said tubular member on a surface in the area of a location to be drilled.
Claim 6
Dependent Claim 31 words
The drill guide of claim 5, wherein said chamfered end portion has a plurality of concave recesses, and wherein junctures between adjacent concave recesses form sharp points at said second end.
Claim 7
Dependent Claim 39 words
The drill guide of claim 3, wherein said extended handle is of sufficient length to stabilize said tubular member by bracing said handle against the patients body a sufficient distance from the incision to avoid obstructing the surgical procedure.
Claim 8
Dependent Claim 66 words
The drill guide of claim 3, wherein said connecting means comprises a rod member joined at a first end to said handle, and a drill guide holder joined at a first end to a second end of said rod member and at a second end to said first end of said tubular member, and wherein said rod member is angularly adjustable with respect to said handle.
Claim 9
Dependent Claim 97 words
The drill guide of claim 8, wherein said drill guide holder is radiolucent, spacing other non-radiolucent drill guide components away from said tubular member and avoiding interference in radiographic images taken while using the drill guide, and wherein the second end portion of said tubular member has an internally chamfered surface extending from the outer wall of said tubular member at said second end toward the first end of said tubular member, to the inner wall of said tubular member, for anchoring said tubular member on a surface in the area of a location to be drilled.
Claim 10
Dependent Claim 226 words
A drill guide, comprising: a tubular member for guiding a drill bit to a desired location for drilling, said tubular member having first and second end portions and inner and outer walls, said second end portion having an internally chamfered surface extending from the outer wall of said tubular member at said second end, toward the first end of said tubular member, to the inner wall of said tubular member, said chamfered end portion having a plurality of concave recesses, and wherein junctures between adjacent concave recesses form sharp points at said second end; an extended handle of sufficient length to stabilize said tubular member by bracing said handle against an external surface spaced a distance away from the location of drilling; and articulated connecting means for joining said tubular member to said extended handle, said connecting means comprising a rod member having first and second ends, joined at the first end to said handle, and a radiolucent drill guide holder having first and second ends, joined at the first end to the second end of said rod member and joined at the second end to said first end of said tubular member, said rod member being positionally adjustable with respect to said handle and said drill guide holder, for facilitating adjustment of and controlling the position of said tubular member with respect to said handle.
Claim 11
Dependent Claim 91 words
A drill guide tube holder for securing a drill guide tube to a drill guide handle, comprising an elongated member of a radiolucent material having a first end portion defining a hole for receiving a drill guide tube and side portions extending from said first end portion, said side portions defining a slot there between and said hole opening into said slot, whereby said side portions may be spread apart to widen said hole to facilitate insertion of a drill guide tube and urged together for biased engagement of the tube.
Claim 12
Dependent Claim 22 words
The drill guide tube holder of claim 11, wherein said radiolucent material is selected from the group consisting of plastic and fiberglass.
Claim 13
Independent Claim 182 words
A method of guiding a drill for implanting a fixation device in a spine, comprising: positioning a tubular member, having a first and second end portions and a handle structure, for guiding a drill bit through a pedicle of a vertebra; aligning said tubular member concentrically with said pedicle by radiographically imaging said pedicle and tubular member and adjusting the position of said tubular member so that the radiographic image of said tubular member is concentrically disposed within a circular image representing said pedicle, and so that the images of the pedicle and tubular member are unobscured by the handle structure in the radiographic image; anchoring an end portion of said tubular member on a bony surface overlying said pedicle while maintaining said tubular member in said alignment, wherein said tubular member has an inner wall and an outer wall and a chamfered surface at said second end portion extending from said outer wall into said inner wall toward the first end of said tubular member; and drilling said pedicle by guiding said drill bit through said tubular member into said pedicle.
Claim 14
Dependent Claim 43 words
The method of claim 13, wherein said tubular member is connected to the handle structure by articulated connecting means, and said method further comprising bracing said handle structure against a surface external to the spine for stabilizing said tubular member in said alignment.
Claim 15
Dependent Claim 26 words
The method of claim 14, wherein said articulated connecting means comprises a radiolucent drill guide holder for securing said tubular member to said articulated connecting means.

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