DRILL GUIDE FOR MANDIBULAR STAPLE AND STAPLE CONSTRUCTION

• US 3,664,022 A
• Filed: 01/28/1971
• Issued: 05/23/1972
• Est. Priority Date: 01/28/1971
• Status: Expired due to Term

• Current Assignee: Irwin A. Small
• Original Assignee: Irwin A. Small
• Inventors: Small, Irwin A.
• Primary Examiner(s): Peshock, Robert
• Application Number:
  US05/110,503
• Time in Patent Office: 481 Days
• Field of Search: 32/2,1A,40,67
• US Class Current: 433/75
• CPC Class Codes: A61C 1/084 of implanting tools
• CPC Class Codes: A61C 8/003 Transmandibular implants

Abstract

A drill guide for mandibular staples is disclosed which is adapted to accurately align a drill for drilling fastener holes in the mandibular lower jaw portion at precisely located positions for the attachment of fasteners therethrough by means of a staple to retain a dental appliance in secure position on the mandibular jaw portion; the method includes the construction of a staple which has a lower cross plate which is curvilinearly shaped to conform to the curvilinear shape of the front section of the jaw bone and to which are attached a plurality of fastener members adapted to protrude into and selectively through the jaw bone in accordance with the holes previously drilled through the jaw bone by means of the drill guide; the staple and the fastening portions of the staple are coated with a bio-ceramic such as aluminum oxide, titanium oxide, magnesium oxide, or the like, applied to the staple in open pore form to permit the bone tissue of the mandibular jaw to grow into the porous bio-ceramic coating to provide an additional interlock of the staple with the mandibular jaw tissues and to prevent bone deterioration due to the drilling operation and insertion of the metal staple.

Claims

1. A drill guide assembly for mandibular staples adapted for drilling a plurality of apertures in accurately located positions through a jaw bone;

said drill guide assembly comprising;

an elongated post having a first arm member extending therefrom;

a second arm member longitudinally movable along said post towards and away from said first arm member;

means to lock said second arm member in adjusted position relative to said first arm member;

said first arm member carrying a pair of spaced locator pins;

said locator pins being pivotally supported around a common pivot for reciprocating movement in opposite directions in order to adapt to a jaw bone of uneven thickness;

said second arm member carrying a jig fixture at its outer end;

said jig fixture being arcuate in a horizontal plane and having a plurality of spaced apertures extending therethrough;

said apertures being located along an arcuate line;

the outermost of said apertures being in vertical alignment with said pair of spaced locator pins of said first arm member disposed above;

the upper surface of said jig fixture being provided with a plurality of teeth;

said locator pins of said first arm member being adapted to be placed in position on the upper surface of said jaw bone on a pair of prelocated points;

said jig fixture of said second arm member being adapted to clAmpingly engage the lower surface of said jaw bone upon relative adjusting movement of said second arm member towards said first arm member along said post to cause said teeth on the upper surface of said jig fixture to bitingly engage said jaw bone to prevent displacement of said drill guide when said second arm member is locked in position by said locking means;

the arcuate arrangement of said plurality of apertures corresponding substantially to the curvilinear shape of said jaw bone; and

each of said apertures being adapted to guidingly receive a drill for drilling a plurality of apertures in said jaw bone at accurate predetermined locations.

2. accurately drilling a plurality of blind bores into said mandibular jaw bone located between said spaced through-bores;

3. In the drill guide assembly as defined in claim 1, the outer-most of said apertures in said jig fixture on said second arm member adapted for drilling through-bores through said jaw bone for the securement of equally spaced opposite securing rods of said staple to said jaw bone;

the remainder of said plurality of apertures being adapted for drilling blind bores into said jaw bone for receipt of a plurality of correspondingly spaced intermediate locking and locating pins of said staple.

4. hammering said mandibular staple into place for full extension of said securing rods and said locking pins into said apertures;

5. In combination with a drill guide of the type described, a mandibular staple adapted for attachment to a jaw bone to locate and retain a dental appliance on said jaw bone;

said mandibular staple comprising an elongated support plate;

a pair of securing rods extending upwardly from said support plate in parallel direction from both ends thereof;

a plurality of locking pins disposed between said pair of securing rods extending upwardly from said support plate in parallel direction with said securing rods, and a plurality of locating pins extending from said support plate located between said locking pins and in parallel alignment therewith;

said locking pins and said locating pins being of substantially shorter length than said pair of outer end securing rods.

6. cutting off the excess lengths of said securing rods above said fasteners;

and

7. In the mandibular staple as defined in claim 6, said pair of outer securing rods adapted for extension through equally spaced apertures drilled through said jaw bone by means of said drill guide and said plurality of shorter length locking and locating pins being adapted for extension into accurately spaced blind bores drilled into said jaw bone by means of said drill guide.

8. In the mandibular staple as defined in claim 7, said plurality of locking pins being each provided with a mushroom type head portion and said plurality of locating pins being externally threaded for interlocking engagement with the bone tissue within said blind bores provided in said jaw bone.

9. In the mandibular staple as defined in claim 5, said pair of securing rods and said plurality of locking pins and locating pins extending along an arcuate path substantially corresponding to The arcuate shape of said jaw bone.

10. In the mandibular staple as defined in claim 5, said support plate, securing rods and said plurality of locking and locator pins being coated with a layer of bio-ceramic material.

11. In the mandibular staple as defined in claim 10, said bio-ceramic coating being an oxide selected from the group consisting of aluminum oxide, titanium oxide and magnesium oxide.

12. In the mandibular staple as defined in claim 10, said bio-ceramic coating being of a porous nature to permit homogeneous intergrow with the bone tissue of said jaw bone upon application of said staple to said jaw bone.

13. The method of locating and retaining a removable dental applicance upon a mandibular jaw bone comprising the steps of :