Drill, drill cover, and surgical instrument for collecting autologous bone employing same

Patent metadata

Field	Value
Publication number	US-9888929-B2
Application number	US-201214238049-A
Country	US
Kind code	B2
Filing date	Aug 13, 2012
Priority date	Aug 11, 2011
Publication date	Feb 13, 2018
Grant date	Feb 13, 2018

Abstract

A drill and drill cover and autogenous bone collector using the same are provided. The autogenous bone collector comprises a shaft unit connected to a driving device and a cutting unit which revolves and collects bone particles of a patient. The cross-sectional area of the cutting unit is from 10% to 40% of an area of a circle having a radius corresponding to a distance from the center of the cutting unit to the outermost end portion of the cutting unit.

First claim

What is claimed is:

1. An autogenous bone collector comprising:
a drill having a shaft unit connected to a driving device and a cutting unit which revolves and collects bone particles of a patient;
wherein a cross-sectional area at a middle portion of the cutting unit is from 10% to 40% of an area of a circle having a radius corresponding to a distance from the center of the cutting unit to an outermost end portion of the cutting unit; and
a drill cover attached to an exterior surface of the cutting unit and comprising a hollow, tubular main body having an upper portion with an open top end, a lower portion with an open bottom end, and a cut-open portion between the upper and lower portions, the cut-open portion including spiral cuts forming a continuous spiral void, wherein the main body is compressible in a longitudinal direction defined between the top and bottom ends such that when sufficient force is applied, the upper portion and the lower portion of the main body approach each other and a width of the spiral void decreases bringing opposing surfaces adjacent the spiral void closer together.

2. The autogenous bone collector of claim 1 , wherein the spiral void is formed at a constant pitch.

3. The autogenous bone collector of claim 1 , wherein spiral void is formed at varying pitches.

4. The autogenous bone collector of any one of claims 1 , 2 , and 3 , wherein the width of the spiral void portion is constant.

5. The autogenous bone collector of any one of claims 1 , 2 , and 3 , wherein the cut-open portion comprises:
a first cut-open portion having a constant first cut-open width; and
a second cut-open portion having a second cut-open width smaller than the first cut-open width.

6. The autogenous bone collector of claim 5 , wherein the second cut-open portion extends from two opposite ends of the first cut-open portion, and the width of the second cut-open portion gradually decreases toward an end portion thereof.

7. The autogenous bone collector of claim 1 , wherein the spiral void extends downward while rotating the main body to the left or the right.

8. The autogenous bone collector of claim 1 , comprising protruding fingers formed at the upper end of the drill cover such that they are spaced apart from each other by a constant interval in a circumferential direction.

9. The autogenous bone collector of claim 8 , wherein each protruding finger includes a lip on an inner surface arranged at the upper end of the main body.

10. The autogenous bone collector of claim 1 , wherein the main body is formed of titanium or stainless steel.

11. The autogenous bone collector of claim 1 , wherein the cutting unit comprises a shoulder protruding from the outer circumferential surface of the drill, wherein movement of the drill cover is restricted by the shoulder, and wherein a protrusion is formed below the shoulder.

12. The autogenous bone collector of claim 1 , wherein the cutting unit comprises:
a first blade, which spirally extends; and
a second blade, which spirally extends at a same pitch as the first blade.

13. The autogenous bone collector of claim 1 , wherein the outermost end portion of the cutting unit comprises two or more sloped surfaces adjacent to a first blade and a second blade of the cutting unit, the two or more sloped surfaces having different slopes from the first blade and the second blade.

14. The autogenous bone collector of claim 1 , wherein the cutting unit comprises a pointer that protrudes from a center portion of the outermost end portion of the cutting unit.

15. The autogenous bone collector of claim 1 , wherein a thickness of the cutting unit is constant or increases toward the shaft unit.

Assignees

• Moon Jong Hoon
• Lee Tae Euk
• Eom Tae Gwan
• Osstem Implant Co Ltd

Inventors

• Moon Jong Hoon
• Lee Tae Euk
• Eom Tae Gwan

Classifications

• A61C3/02

  Tooth drilling or cutting instruments; Instruments acting like a sandblast machine · CPC title

• A61B17/1637 Primary

  Hollow drills or saws producing a curved cut, e.g. cylindrical (A61B10/025, A61B17/1695 take precedence) · CPC title

• A61B17/1635

  for grafts, harvesting or transplants · CPC title