US 5,746,743 AGranted

Single-handed surgical drill depth guide with mandibular retractor

AssigneeGreenberg Surgical Technologies, LLC

InventorAlex M. Greenberg

Life of this patent

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Abstract

A surgical drill guide and retractor for treating mandibular fractures includes an adjustable length sleeve having an inner segment slidably mounted within an outer segment. The adjustable length sleeve also has a through-going lumen which connects a first opening at an end of the outer segment with a second opening at an end of the inner segment. The lumen is dimensioned for slidably receiving a drill bit or other instrument therein. A handle slidably retracts the inner segment into the outer segment to expose a preselected length of a drill bit or other instrument inserted through the lumen of the sleeve. A proximal end of the drill guide includes a mandibular retractor which is inserted intraorally or extraorally and has a retractor blade shaped to retract the cutaneous region laterally away from the bone. The retracting blade also has an aperture which allows surgical instruments to be inserted through the aperture to the bone. The retractor allows a surgeon to retract with one hand and view the surgical site. The surgeon's other hand is free to operate surgical instruments such as a drill or screwdriver.

Claims16

Dependent claims

A surgical drill guide and retractor for restricting the penetration depth of a distal end of an instrument into a bone, a proximal end of the instrument having a larger girth than said distal end, said drill guide and retractor comprising:

(a) an adjustable length sleeve, including:
(1) an outer segment having a first lumen;
(2) an inner segment having a second lumen, said inner segment being retractable disposed within said first lumen so that said first and second lumens are linearly aligned to form a single lumen of said adjustable length sleeve;
(3) said inner and outer segments being cooperatively connected so that said inner sleeve is displaceable into and out of only a first end of said first lumen and so that a displacement of said inner segment out of and into said first lumen segment changes a longitudinal length of said adjustable length sleeve;
and
(4) said single lumen of said adjustable length sleeve having a diameter dimensioned for slidably receiving an instrument therethrough, until the larger girth proximal end of the instrument abuts a proximal end of said adjustable length sleeve and a distal end of the instrument protrudes from a distal end of said sleeve;
(b) a handle on said adjustable length sleeve, said handle including a trigger connected to the handle in a way to cause said inner segment to retract into said outer segment to shorten said adjustable length sleeve so as to expose a preselected length of the instrument;
wherein said penetration depth of said instrument is restricted to said preselected length;
and
(c) a retractor blade extending from a distal end of the adjustable length sleeve, the retractor blade including:
(1) a curved portion at a proximal end of the adjustable length sleeve;
(2) an arcuate portion having a tip, the arcuate portion connected to a distal end of the curved portion;
and
(3) an aperture defined in the retractor blade and located proximally from the tip;
wherein the retractor blade is slidably adjustable superiorly and inferiorly with respect to a distal end of the adjustable length sleeve and wherein a pair of clamps are connected to the distal end of the adjustable length sleeve for selectively retaining the retractor blade at a desired position.

12 more elements

(a) an adjustable length sleeve, including:
(1) an outer segment having a first lumen;
(2) an inner segment having a second lumen, said inner segment being retractable disposed within said first lumen so that said first and second lumens are linearly aligned to form a single lumen of said adjustable length sleeve;
(3) said inner and outer segments being cooperatively connected so that said inner sleeve is displaceable into and out of only a first end of said first lumen and so that a displacement of said inner segment out of and into said first lumen segment changes a longitudinal length of said adjustable length sleeve;
and
(4) said single lumen of said adjustable length sleeve having a diameter dimensioned for slidably receiving an instrument therethrough, until the larger girth proximal end of the instrument abuts a proximal end of said adjustable length sleeve and a distal end of the instrument protrudes from a distal end of said sleeve;
(b) a handle on said adjustable length sleeve, said handle including a trigger connected to the handle in a way to cause said inner segment to retract into said outer segment to shorten said adjustable length sleeve so as to expose a preselected length of the instrument;
wherein said penetration depth of said instrument into said hole is restricted to said preselected length;
and
(c) a retractor blade extending from a distal end of the adjustable length sleeve, the retractor blade including:
(1) a curved portion at a proximal end of the adjustable length sleeve;
(2) an arcuate portion having a tip, the arcuate portion connected to a distal end of the curved portion;
and
(3) an aperture defined in the retractor blade and located proximally from the tip;
wherein the retractor blade includes a joint pivotally connecting proximal and distal ends of the retractor blade.

12 more elements

Dependencies are inferred from the claim text.

Facts

Application: 08/300,707Filed 2 Sep 1994 · continuation in part
Priority: 13 Jul 1990
Granted: 5 May 1998
Term ends: Not estimatedThe source records don’t support an estimate.

Classification12 codes

A61B 17/1728
Guides or aligning means for drills , mills, pins or wires: for holes for bone plates or plate screws
A61B 17/02
Surgical instruments, devices or methods: for holding wounds open, e.g. retractors; Tractors
A61B 17/176
Specially adapted for particular parts of the body: for the jaw
A61C 1/084
Positioning or guiding, e.g. of drills: of implanting tools

Family

Serial552,703Parent of this continuation-in-part · filed 13 Jul 1990
Serial719,178Parent of this continuation-in-part · filed 21 Jun 1991
Serial919,783Parent of this continuation-in-part · filed 24 Jul 1992
US 5,409,493 AParent of this continuation-in-part
US 5,133,720 AParent of this continuation-in-part
US 5,026,376 AParent of this continuation-in-part
US 5,746,743 AThis patent

From the US filing history. Foreign family members aren’t listed.