IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0818314
(2017-11-20)
|
등록번호 |
US-10154849
(2018-12-18)
|
발명자
/ 주소 |
- del Rio, Eddy H.
- Enck, Duane Jeffrey
|
출원인 / 주소 |
- DePuy Synthes Products, Inc.
|
대리인 / 주소 |
Meunier Carlin & Curfman LLC
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
74 |
초록
▼
A cutting burr that includes a pair of axially spaced diamond-shaped portions designed to be keyed into a spindle of a locking mechanism of a high speed surgical drilling instrument and adapted to fit into a single pawl thereof to lock said cutting burr in place so as to prevent axial movement there
A cutting burr that includes a pair of axially spaced diamond-shaped portions designed to be keyed into a spindle of a locking mechanism of a high speed surgical drilling instrument and adapted to fit into a single pawl thereof to lock said cutting burr in place so as to prevent axial movement thereof and provide concentric rotation of said cutting burr without any wobbling. The orientation of both portions may be identical with respect to a center plan and diamond shape in the portion at the proximal end of the shank of the cutting tool may be larger than the intermediately located diamond shape of the other portion. The apexes of the facets of the six-sided diamond shape may be disposed below the surface of the shank of the cutting burr.
대표청구항
▼
1. A cutting burr comprising: a shank with an engagement end at a proximal end of the shank to be received by a surgical instrument,a pair of axially spaced diamond-shaped portions for coupling the cutting burr to a drive mechanism of a surgical instrument, the pair of axially spaced diamond-shaped
1. A cutting burr comprising: a shank with an engagement end at a proximal end of the shank to be received by a surgical instrument,a pair of axially spaced diamond-shaped portions for coupling the cutting burr to a drive mechanism of a surgical instrument, the pair of axially spaced diamond-shaped portions including: a first diamond-shaped portion formed at the proximal end of the shank;a second diamond-shaped portion spaced along the shank between the first diamond-shaped portion and a distal end of the shank;wherein a length of the first diamond-shaped portion in an axial direction along the shank is greater than a length of the second diamond-shaped portion in an axial direction along the shank,wherein the first diamond-shaped portion is adapted to be inserted into a surgical instrument and to accept rotational engagement forces, andwherein the second diamond-shaped portion is adapted to be engaged by a locking pawl to prevent axial movement of the cutting burr within a surgical instrument. 2. The cutting burr of claim 1, wherein the first diamond-shaped portion has a first pair of facets that meet at a first apex and an opposing second pair of facets that meet a second apex, the first and second pair of facets coupled by opposing side edges, wherein the second-diamond shaped portion has a third pair of facets that meet at a third apex and an opposing fourth pair of facets that meet at a fourth apex, the third and fourth pair of facets coupled by opposing side edges,wherein each of the side edges of the first and second diamond-shaped portions defining a curved surface. 3. The cutting burr of claim 2, wherein each of the side edges of the first and second diamond-shaped portions have a radius of curvature corresponding to a radius of curvature of the shank. 4. The cutting burr of claim 3, wherein the second diamond-shaped portion includes: a tapered front wall extending from an outer perimeter of the shank toward the third pair of facets, the front wall located between the third pair of facets and the distal end of the shank, anda back wall extending from the third pair of facets to the outer perimeter of the shank, the back wall perpendicular to a longitudinal axis of the shank, the back wall located between the third pair of facets and the proximal end of the shank. 5. The cutting burr of claim 4, wherein the length of the second diamond-shaped portion is measured between the tapered front wall and the back wall, the length of the second-diamond shaped portion is approximately 0.068 inches. 6. The cutting burr of claim 3, wherein the first diamond-shaped portion includes a tapered front wall extending from an outer perimeter of the shank toward the first pair of facets, wherein the length of the first diamond-shaped portion is measured between the proximal end of the shank and the tapered front wall of the first diamond-shaped portion. 7. The cutting burr of claim 6, wherein the length of the first diamond-shaped portion is approximately 0.149 inches. 8. The cutting burr of claim 3, further comprising: an insert sized and configured to mate with the first diamond-shaped portion, the insert including a generally rectangular shaped slot defined by substantially flat opposing side walls extending between curved end walls,wherein a width of the slot measured between the opposing side walls corresponds to a width of the first diamond-shaped portion, such that the first diamond-shaped portion does not rotate within the insert. 9. The cutting burr of claim 8, wherein a radius of curvature of the curved end walls of the slot corresponds to a radius of curvature defined by an outer surface of the insert. 10. The cutting burr of claim 8, wherein a radius of curvature of the curved end walls of the slot corresponds to the radius of curvature defined by the side edges of the first diamond-shaped portion. 11. The cutting burr of claim 8, wherein the insert further includes: a diamond-shaped key slot sized and configured to receive the first diamond-shaped portion, anda pointed-shaped inlet end that facilitates an alignment and insertion of the cutting burr as it is advanced toward and into the keyed slot,wherein, during coupling, contact between the proximal end of the shank and the pointed-shaped inlet end causes the shank to rotate thereby bringing the first diamond-shaped portion into alignment with the keyed slot. 12. The cutting burr of claim 11, wherein the insert includes a hole extending through at least one of the sidewalls of the insert, where a dowel pin received within the hole locates the cutting burr and first diamond-shaped portion within the keyed slot. 13. The cutting burr of claim 2, wherein the side edges of the first diamond shaped-portion define an arc length around a perimeter of the shank greater than an arc length of the side edges of the second diamond-shaped portion. 14. The cutting burr of claim 2, wherein the first diamond-shaped portion extends to the proximal end of the shank. 15. The cutting burr of claim 2, wherein a height of the first diamond-shaped portion measured between the first and second apexes and perpendicular to a longitudinal axis of the shank is less than a diameter of the shank, wherein a height of the second diamond-shaped portion measured between the third and fourth apexes and perpendicular to the longitudinal axis of the shank is less than the diameter of the shank. 16. The cutting burr of claim 15, wherein the height of the first diamond-shaped portion is greater than a height of the second diamond-shaped portion. 17. The cutting burr of claim 2, wherein each of the facets defines a substantially flat surface, wherein a width of the first-diamond shaped portion is greater than a width of a second diamond-shaped portion. 18. The cutting burr of claim 17, wherein one facet of the first pair of facets is parallel with a diagonally opposite facet of the second pair of facets, the width of the first diamond-shaped portion measured between the one facet and the diagonally opposite facet, wherein the width of the first diamond-shaped portion is approximately 0.065 inches. 19. The cutting burr of claim 1, wherein a length of the shank extending between the first and second diamond-shaped portions is approximately 0.029 inches. 20. The cutting burr of claim 1, further comprising: an annular groove extending around a perimeter of the shank located axially between the second diamond-shaped portion and the distal end of the shank,wherein the groove defines a first tapered wall adjacent the distal end of the shank, a second tapered wall adjacent the proximal end of the shank, and a cylindrically-shaped portion extending therebetween,wherein a diameter of the cylindrically-shaped portion of the groove corresponds to a height of the second diamond-shaped portion measured between opposing apexes of the second diamond-shaped portion.
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