Drill guide device for the arthroscopic anatomic placement of a straight tibio-femoral bone tunnel for ACL reconstruction
OwnerCarl W. Boltoninventor
Life of this patent
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Abstract
The invention provides a drill guide device to accurately place a straight bone tunnel through the tibia and into the femur, the axis of which passes through the anatomic points of origin and insertion of the anterior cruciate ligament. A unique feature of the invention is that by virtue of the linkage mechanism for variable length adjustment, it can simultaneously select on two reference points within a joint thereby allowing for the sequential drilling of the bone tunnels in a straight line incorporating both of the reference points. The method of use for this drill guide device is intended to be positioned through an arthroscopic portal and does not require a femoral incision.
Claims12
An orthopedic drill guide device providing for the simultaneous selection of two reference points thereby allowing for the sequential drilling of two separate bone tunnels in a straight line incorporating both reference points comprising:
- (a) a handle;
- (b) a guide sleeve;
- (c) a linkage mechanism for variable length adjustment;
- said handle being an elongate member having a first end and a second end whereby said first end is utilized to direct and manipulate the device, said second end being substantially contiguous with said first end and oriented at a first predetermined angle relative to that of said first end, a terminal end of said second end tapers to a point forming a tip of a primary reference pointer thereby providing facilitating means for the positioning of said tip at a predetermined reference point, an alignment arm having a longitudinal axis and being attached at a second predetermined angle relative to an upper surface of said handle;
- said guide sleeve being an elongated tube with a longitudinal axis having a first and second end, said elongated tube second end is conjoined with a guide arm by attachment means, said guide arm being an elongated member having a first end with a through hole and a second end with a through hole such that the longitudinal axes through both said through holes are oriented substantially parallel, said second end of said guide sleeve is rigidly affixed in said through hole of said second end of said guide arm such that the longitudinal axis of said guide arm is oriented substantially perpendicular to the longitudinal axis of said guide sleeve, said through hole of said first end of said guide arm having a substantially similar mating cross section with that of said alignment arm whereby when said through hole of said first end of said guide arm slideably receives said alignment arm a centerline corresponding with an extension of the longitudinal axis of said guide sleeve will intersect said tip of said primary reference pointer;
- said linkage mechanism for variable length adjustment is attached to said handle and includes a plurality of components coupled together and includes means for providing a predetermined arcuate motion to be translated into a resultant linear motion to a tip of
- a secondary reference pointer such that said tip of said secondary reference pointer will travel in a linear path coinciding with a centerline which is a direct extension of the longitudinal axis of said guide sleeve intersecting the point represented by the tip of said primary reference pointer of said second end of said handle and the tip of said secondary reference pointer.
Dependencies are inferred from the claim text.