When performing surgery, surgeons may utilize a surgical drilling instrument for drilling, cutting or shaping bones that utilize a numerous different kinds and sizes of cutting burrs and attachments. During certain medical operations, the cutting burr needs to be changed. The change must be done timely and efficiently in view of the surgical demands. To this end, the portion of the cutting burr, namely, the proximate end of the shank typically lacks a configuration to accommodate this change of the cutting burr.
Disclosed herein is a cutting burr that provides for a quick release that is fast and simple, and which facilitates the insertion of the cutting burr into a surgical drilling instrument. The cutting burr may have a pair of axially spaced six sided diamond-shaped portions, where one diamond-shaped portion may be formed at an edge of the proximal end of the cutting burr and provides a positive connection with a drive spindle that is connected to a drive motor of the surgical drilling instrument. A second, axially disposed diamond-shaped portion is adapted to mate with a locking pawl of the surgical drilling instrument. The locking pawl engages the axially disposed diamond-shaped portion to lock the cutting burr into the surgical drilling instrument with substantially no axial movement.
In some implementations, a detent pawl is provided to hold the cutting burr within the surgical instrument when it is in a loading position. The detent pawl may engage the axially disposed diamond-shaped portion at a side opposite the locking pawl.
In some implementations, the diamond-shaped portion at the proximal end is sized such that it can be used with older surgical drilling instruments that may not be provided with a complementary receiving recess for the diamond-shaped portion.
This summary is provided to introduce a selection of concepts in a simplified form that are further described below in the detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.
The foregoing summary is better understood when read in conjunction with the appended drawings. For the purposes of illustration, there is shown in the drawings exemplary implementations; however, these implementations are not limited to the specific methods and instrumentalities disclosed. In the drawings:
As used herein, the term “cutting burr” may be analogous with terms such as bit, drill bit, surgical drill bit and the like. The term “attachment” may have several meanings within the text of this application, but when generalized as a component of a surgical drilling instrument it refers to a portion of the instrument that attaches to the end of the motor/locking mechanism and receives the cutting burr. An “attachment” may be a controlled depth attachment, a minimally invasive attachment and the like. The surgical drilling instrument may include an integral motor (electric or pneumatic) and a locking mechanism and an attachment releasably connected to the locking mechanism.
High speed surgical drills are increasingly being used by surgeons when performing delicate bone dissection in areas such as the cervical and lumbar spine. Such surgical drills operate at very high R.P.M., and are able to rotationally drive multiple types of attachments and cutting burrs. As will be described below, a cutting burr of the present disclosure includes a shank that defines two substantially diamond-shaped portions. The substantially diamond-shaped portions provide for ease of insertion and removal of the cutting burr to and from a compatible surgical drill. The substantially diamond-shaped portions also enable the surgical drill to direct higher levels of torque to the cutting burr during surgical procedures.
Referring to
As shown in the Figs. the diametrical dimensions of the vertices in both portions is less than the diameter of the main body of the shank. The shank 16 may include an annular groove 29. The lower surfaces of the pair of six-sided diamond portions 18 and 20 are a mirror image of the upper surface. While the diamond-shaped portions 18 and 20 are described as being “diamond-shaped,” it is noted that such terminology is intended to encompass any six-sided (hexagon) shape having a cross-section with flat edges that meet at a six vertices, curved edges that meet at six points, or some combination of both to form the six sides. The flat and curved edges, and combinations thereof, may be applied to other polygon shapes having different numbers of sides.
The diamond-shaped portion 18 at the outermost proximal end is designed to be inserted into a mating drive portion of a surgical drill, as will be described with reference to
As shown in
The diamond-shaped portion 20 may also be engaged by a detent pawl of the surgical drill. For example, an engagement end of detent pawl may be contoured, e.g., having a generally hill shape to partially fit into the diamond-shaped portion 20 on an opposite side of the engagement end of the locking pawl. The detent pawl may be provided to apply a sufficient force on the diamond-shaped portion 20 to allow the cutting burr 10 to be moved in and out of the surgical drill, while reducing the likelihood that the cutting burr will inadvertently fall out of the surgical drill when in a loading position.
As shown by the a comparison of the sectional views of the diamond-shaped portions 18 and 20 (
The angle of the facets of the six-sided diamond in the diamond-shaped portion 20—a=47°;
The width of the facets of the six-sided diamond in the diamond-shaped portion 20—b=0.046″;
The width of the facets of the six-sided diamond in the diamond-shaped portion 18—c=0.065″;
The width of the shank 16 at the space between diamond-shaped portions 18 and 20—d=0.029″;
The length of the diamond-shaped portion 20—e=0.068″; and
The length between the proximal end and the back wall of diamond-shaped portion 18 f=0.149″. This dimension may contribute to the feature of substantially reducing the axial play of the cutting burr.
Thus, in accordance with the above, the diamond-shaped portions 18 and 20 provide sufficient cross-sectional dimensions to meet strength and reliability requirements needed for high-speed, large force surgical applications. Facets 34 and 34a of the diamond shape 18 provide positive engagement surfaces in both clockwise and counter-clockwise rotational directions and are sufficiently sized to withstand rotations forces in either direction without wobbling within the surgical drill. For example, some surgical drills provide bi-directional rotation, allowing the surgeon to selectively reverse rotation for various surgical techniques. In conventional designs, there may be rotational play between a bit end and a drive portion. However, the symmetrical diamond facets 34 and 34a of the diamond-shaped portion 18 provide substantial drive surfaces in either direction.
With reference to
As shown in
Referring now to
Thus, as described above, a cutting burr is provided with an attachment end that has a configuration and dimensions that serve to facilitate the insertion of the cutting burr into the surgical cutting instrument. When locked in the running position there is a structure that prevents the cutting burr from having any axial movement. Also, there is a positive connection such that the cutting burr rotates concentrically without any wobbling motion.
While particular aspects of the present subject matter described herein have been shown and described, it will be apparent to those skilled in the art that, based on the teachings herein, changes and modifications may be made without departing from the subject matter described herein and its broader aspects and, therefore, the appended claims are to encompass within their scope all such changes and modifications as are within the true spirit and scope of the subject matter described herein.
This application claims priority to U.S. patent application Ser. No. 16/222,446 (now U.S. Pat. No. 10,952,747), filed Dec. 17, 2018, which is a continuation of U.S. patent application Ser. No. 15/818,314 filed Nov. 20, 2017, which is a continuation of U.S. patent application Ser. No. 15/225,043 (now U.S. Pat. No. 9,820,756) filed Aug. 1, 2016, which is a continuation of U.S. patent application Ser. No. 14/223,011 (now U.S. Pat. No. 9,402,638) filed Mar. 24, 2014, which is a continuation of U.S. patent application Ser. No. 13/082,016 (now U.S. Pat. No. 8,690,876) filed Apr. 7, 2011, entitled “CUTTING BURR SHANK CONFIGURATION,” which are incorporated herein by reference in their entirety.
Number | Name | Date | Kind |
---|---|---|---|
170604 | Williams | Nov 1875 | A |
170694 | Williams | Dec 1875 | A |
RE8360 | Williams | Aug 1878 | E |
233707 | Starr | Oct 1880 | A |
233709 | Starr | Oct 1880 | A |
269627 | Bonner | Dec 1882 | A |
283745 | Bartlett | Aug 1883 | A |
287683 | Johnston et al. | Oct 1883 | A |
302870 | Starr | Jul 1884 | A |
327558 | Kuder | Oct 1885 | A |
359798 | Mann | Mar 1887 | A |
415983 | Starr | Nov 1889 | A |
418108 | Browne | Dec 1889 | A |
474011 | Harrison | May 1892 | A |
553226 | Brockett | Jan 1896 | A |
748398 | Middleton | Dec 1903 | A |
988154 | Thiemer | Mar 1911 | A |
988903 | Smith | Apr 1911 | A |
1135057 | Schultis | Apr 1915 | A |
1188533 | Cobey | Jun 1916 | A |
1433590 | Ziegler | Oct 1922 | A |
1503962 | Milliken | Aug 1924 | A |
1578397 | Cone | Mar 1926 | A |
1717663 | Checkley | Jun 1929 | A |
1726012 | Bilz | Aug 1929 | A |
1862337 | Emrick | Jun 1932 | A |
1947957 | Tiliman | Feb 1934 | A |
2012280 | Johansen | Aug 1935 | A |
2101347 | Robinette | Dec 1937 | A |
2367863 | Grey | Jan 1945 | A |
2390950 | Lanfranconi | Dec 1945 | A |
2405018 | Crowley | Jul 1946 | A |
2448817 | McArthur | Sep 1948 | A |
2473380 | Ljunggren | Jun 1949 | A |
2494166 | Drissner | Jan 1950 | A |
2543290 | Johansson | Feb 1951 | A |
2614781 | Engel | Oct 1952 | A |
2686682 | Csaki | Aug 1954 | A |
2740974 | Lazarus | Apr 1956 | A |
2769643 | Denzler | Nov 1956 | A |
2787010 | Uphoff | Apr 1957 | A |
2874985 | March | Feb 1959 | A |
2939643 | Barsam, Jr. | Jun 1960 | A |
2955831 | Zandberg | Oct 1960 | A |
3046029 | Weber et al. | Jul 1962 | A |
3054308 | Larry | Sep 1962 | A |
3084898 | Miller | Apr 1963 | A |
3136347 | Linquist | Jun 1964 | A |
RE25804 | Misuraca | Jun 1965 | E |
3252667 | Miller | May 1966 | A |
3466971 | Meyer | Sep 1969 | A |
3533638 | Sedgwick | Oct 1970 | A |
3574374 | Keller | Apr 1971 | A |
3589826 | Fenn | Jun 1971 | A |
3596917 | Meyer | Aug 1971 | A |
3599996 | Holt | Aug 1971 | A |
4032163 | Holt | Jun 1977 | A |
4055185 | Waldron | Oct 1977 | A |
4073497 | Flagg | Feb 1978 | A |
4114276 | Malata | Sep 1978 | A |
4115024 | Süssmuth | Sep 1978 | A |
4131165 | Wanner | Dec 1978 | A |
4298074 | Mattchen | Nov 1981 | A |
4303252 | Snider | Dec 1981 | A |
4325661 | Tickins | Apr 1982 | A |
4374481 | Brodie | Feb 1983 | A |
4565472 | Brennsteiner | Jan 1986 | A |
4632195 | Emmerich | Dec 1986 | A |
4710075 | Davison | Dec 1987 | A |
4984667 | Tjaden | Jan 1991 | A |
5037251 | Roth | Aug 1991 | A |
5074025 | Willard, III | Dec 1991 | A |
5152642 | Pitts et al. | Oct 1992 | A |
5218890 | Christ, Jr. | Jun 1993 | A |
5271697 | Johnson | Dec 1993 | A |
5421682 | Obermeier | Jun 1995 | A |
5433562 | Phillips | Jul 1995 | A |
5466101 | Meyen | Nov 1995 | A |
5542846 | Quinn | Aug 1996 | A |
5601560 | Del Rio | Feb 1997 | A |
5630818 | Del Rio | May 1997 | A |
5658305 | Baker | Aug 1997 | A |
5664792 | Tseng | Sep 1997 | A |
5735535 | McCombs | Apr 1998 | A |
5741263 | Umber | Apr 1998 | A |
5820136 | Han | Oct 1998 | A |
5833246 | Trott | Nov 1998 | A |
5833704 | McCombs et al. | Nov 1998 | A |
5888200 | Walen | Mar 1999 | A |
5904687 | Del Rio | May 1999 | A |
5921563 | Huggins | Jul 1999 | A |
5941891 | Walen | Aug 1999 | A |
5957634 | Carpinetti | Sep 1999 | A |
6033408 | Gage | Mar 2000 | A |
6045564 | Walen | Apr 2000 | A |
6129363 | Mack | Oct 2000 | A |
6135461 | Below et al. | Oct 2000 | A |
RE37358 | Del Rio | Sep 2001 | E |
6302408 | Zierpka | Oct 2001 | B1 |
6341926 | Liu | Jan 2002 | B1 |
6409181 | Hsueh | Jun 2002 | B1 |
6423070 | Zeppelin | Jul 2002 | B1 |
6533235 | Dymerski | Mar 2003 | B1 |
6533291 | Huggins | Mar 2003 | B2 |
6572311 | Vasudeva | Jun 2003 | B2 |
6607533 | Del Rio | Aug 2003 | B2 |
6623220 | Nuss et al. | Sep 2003 | B2 |
6705807 | Rudolph | Mar 2004 | B1 |
6725749 | Liou | Apr 2004 | B1 |
6733218 | Del Rio | May 2004 | B2 |
6769846 | Campbell, Jr. et al. | Aug 2004 | B2 |
6780189 | Tidwell | Aug 2004 | B2 |
7011661 | Riedel | Mar 2006 | B2 |
7028589 | Cheng | Apr 2006 | B1 |
7066940 | Riedel | Jun 2006 | B2 |
7114728 | Chen | Oct 2006 | B2 |
7140817 | Phillips | Nov 2006 | B1 |
7207400 | Bise | Apr 2007 | B2 |
7258349 | Frauhammer | Aug 2007 | B2 |
7316529 | Phillips | Jan 2008 | B2 |
7367762 | Takase et al. | May 2008 | B2 |
7465309 | Walen | Dec 2008 | B2 |
7712746 | Manschitz | May 2010 | B2 |
7845428 | Sakamaki | Dec 2010 | B2 |
8273097 | Malla | Sep 2012 | B2 |
8403338 | Hangleiter | Mar 2013 | B2 |
8690876 | del Rio | Apr 2014 | B2 |
8801713 | del Rio | Aug 2014 | B2 |
9113917 | del Rio | Aug 2015 | B2 |
9381023 | del Rio et al. | Jul 2016 | B2 |
9402638 | del Rio | Aug 2016 | B2 |
9681879 | del Rio et al. | Jun 2017 | B2 |
9820756 | del Rio | Nov 2017 | B2 |
10154849 | del Rio | Dec 2018 | B2 |
10194921 | del Rio et al. | Feb 2019 | B2 |
10952747 | del Rio | Mar 2021 | B2 |
20010006280 | Hangleiter | Jul 2001 | A1 |
20010042964 | Bedi | Nov 2001 | A1 |
20020009341 | Vasudeva | Jan 2002 | A1 |
20020058958 | Walen | May 2002 | A1 |
20020151902 | Riedel | Oct 2002 | A1 |
20020159850 | Ravid | Oct 2002 | A1 |
20020165549 | Owusu-Akyaw | Nov 2002 | A1 |
20030060829 | Del Rio | Mar 2003 | A1 |
20030060841 | Del Rio | Mar 2003 | A1 |
20030130663 | Walen | Jul 2003 | A1 |
20030163134 | Riedel | Aug 2003 | A1 |
20050096661 | Farrow | May 2005 | A1 |
20060049587 | Cornwell | Mar 2006 | A1 |
20060053974 | Blust et al. | Mar 2006 | A1 |
20080119863 | Mellier | May 2008 | A1 |
20080208195 | Shores et al. | Aug 2008 | A1 |
20080208229 | Tidwell | Aug 2008 | A1 |
20090146421 | Engdahl | Jun 2009 | A1 |
20090273146 | Dezheng | Nov 2009 | A1 |
20090326540 | Estes | Dec 2009 | A1 |
20100063524 | McCombs | Mar 2010 | A1 |
20100219594 | Nash | Sep 2010 | A1 |
20120003057 | Leyba | Jan 2012 | A1 |
20120259336 | del Rio | Oct 2012 | A1 |
20120259337 | del Rio | Oct 2012 | A1 |
20120275875 | Gischus | Nov 2012 | A1 |
20130130663 | Jung et al. | May 2013 | A1 |
20140303624 | del Rio | Oct 2014 | A1 |
20150032111 | del Rio | Jan 2015 | A1 |
20160270799 | del Rio et al. | Sep 2016 | A1 |
20160338713 | del Rio | Nov 2016 | A1 |
20180132865 | del Rio | May 2018 | A1 |
20190223888 | del Rio | Jul 2019 | A1 |
20190239900 | del Rio et al. | Aug 2019 | A1 |
20210204965 | del Rio | Jul 2021 | A1 |
Number | Date | Country |
---|---|---|
2631675 | Mar 2003 | CN |
1406700 | Apr 2003 | CN |
1672641 | Sep 2005 | CN |
2774405 | Apr 2006 | CN |
2882550 | Mar 2007 | CN |
101365390 | Feb 2009 | CN |
2292163 | Mar 2011 | EP |
02009507 | Jan 1990 | JP |
03019703 | Jan 1991 | JP |
07214406 | Aug 1995 | JP |
07214406 | Aug 1995 | JP |
2000052114 | Feb 2000 | JP |
2000052114 | Feb 2000 | JP |
2002137111 | May 2002 | JP |
2002137111 | May 2002 | JP |
2011136530 | Jul 2011 | JP |
1996010962 | Apr 1996 | WO |
2004082490 | Sep 2004 | WO |
2008020828 | Feb 2008 | WO |
WO-2008020828 | Feb 2008 | WO |
2012138338 | Oct 2012 | WO |
Entry |
---|
Office Action, dated Dec. 16, 2014, received in connection with JP Patent Application No. 2014503639. (English Translation). |
International Preliminary Report on Patentability and Written Opinion, dated Oct. 8, 2013, received in connection with corresponding International Patent Application No. PCT/US2011/031505. |
International Search Report, dated Feb. 28, 2012, received in connection with corresponding International Patent Application No. PCT/US2011/031505. |
International Preliminary Report on Patentability and Written Opinion, dated Oct. 8, 2013, received in connection with related International Patent Application No. PCT/US2011/031512. |
International Search Report, dated Jan. 4, 2012, received in connection with related International Patent Application No. PCT/US2011/031512. |
Number | Date | Country | |
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20210204965 A1 | Jul 2021 | US |
Number | Date | Country | |
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Parent | 16222446 | Dec 2018 | US |
Child | 17208260 | US | |
Parent | 15818314 | Nov 2017 | US |
Child | 16222446 | US | |
Parent | 15225043 | Aug 2016 | US |
Child | 15818314 | US | |
Parent | 14223011 | Mar 2014 | US |
Child | 15225043 | US | |
Parent | 13082016 | Apr 2011 | US |
Child | 14223011 | US |