U.S. patent number 3,667,470 [Application Number 05/028,200] was granted by the patent office on 1972-06-06 for bone shaver and groover.
Invention is credited to Frank F. Rubin.
United States Patent |
3,667,470 |
Rubin |
June 6, 1972 |
BONE SHAVER AND GROOVER
Abstract
A hand-tool for shaving bone or cartilage has a flat shank
slightly bent near its end and then reversely curled with a sharp
edge at its extremity. In one form of the tool a narrow extension
projects from the middle of the sharp edge, the extension having
sharp edges on its three sides.
Inventors: |
Rubin; Frank F. (Quincy,
MA) |
Family
ID: |
21842114 |
Appl.
No.: |
05/028,200 |
Filed: |
April 14, 1970 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
Issue Date |
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660621 |
Aug 15, 1967 |
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Current U.S.
Class: |
606/84; 606/161;
30/356 |
Current CPC
Class: |
A61B
17/1604 (20130101); A61B 17/24 (20130101); A61B
17/1688 (20130101) |
Current International
Class: |
A61B
17/16 (20060101); A61B 17/24 (20060101); A61b
017/22 () |
Field of
Search: |
;128/304,305
;30/168,169,294,312,314,317,356 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
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812,103 |
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Jan 1937 |
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FR |
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1,110,257 |
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Oct 1955 |
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FR |
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200,258 |
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Jul 1908 |
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DD |
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652,157 |
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Oct 1937 |
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DD |
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206,572 |
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Dec 1959 |
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DT |
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143,510 |
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Feb 1961 |
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SU |
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Primary Examiner: Pinkham; Richard C.
Assistant Examiner: Apley; Richard J.
Parent Case Text
This invention is a continuation of my earlier filed application,
Ser. No. 660,621, filed Aug. 15, 1967, and now abandoned.
Claims
What is claimed is:
1. A tool for shaving bony structure of the nose, said tool having
a flat shank with a bend of a few degrees away from the
longitudinal axis of said tool near the working end thereof and a
working end extremity curled in the opposite direction across said
axis, said bend being a fulcrum of said tool, said working end
extremity having at its distal end a sharp cutting edge
transversally disposed to said axis.
2. An elongated tool for shaving the bony structure of the nose,
said tool having a shank with an end portion extending a few
degrees away from the longitudinal axis of said tool near the
working end thereof, the extremity of said end portion curled in
the opposite direction across said axis, said extremity having at
its working end a sharp cutting edge transversally disposed to said
axis, said cutting edge being directed back toward said shank.
3. The tool as claimed in claim 2 wherein said tool includes a
small extension from the middle of its end edge, the edges of said
extention being sharp cutting edges to be used for developing a
groove in bone.
Description
This invention relates to a tool for shaving and/or grooving bone
or cartilage, being specially designed for operations on the bony
structure of the nose. It may be used anywhere on the skeletal
structure of the body for the purpose of collecting fine bone
shavings which can be placed in other areas of the skeletal
framework, or for producing grooves of various widths and depths in
the skeletal framework.
It is an object of the invention to provide a tool such that the
thickness of the scrapings can be regulated by the angle at which
the tool is held when in use. For this purpose the tool is made
with a flat shank which is slightly bent in one direction near its
end, serving as a fulcrum of the tool, and then is curled in the
opposite direction to terminate in a sharp cutting edge suitably
spaced from the adjacent surface of the shank to facilitate
scraping thin shavings from a bone.
For a more complete understanding of the invention reference may be
had to the following description thereof and to the drawing, of
which
FIG. 1 is a perspective view of a tool embodying the invention;
FIG. 2 is a fragmentary side view of the tool in operation;
FIG. 3 is a similar view showing the tool at a different angle to
the bony surface;
FIG. 4 is a plan view of a modified form of the tool for use in
grooving as well as shaving; and
FIG. 5 is a plan view, on a larger scale, of a portion of the tool
shown in FIG. 4.
A bone-shaving tool 10 is shown in FIG. 1, this tool having a
handle portion 12 and a flat shank 14. The shank 14 is straight for
the most part but near its operating end it bends away from its
axis as at 16, the angle of bend being preferably about 20.degree.
but may vary from 10.degree. to 60.degree.. A short distance beyond
this bend the end portion of the tool is curled sharply in the
other direction through an arc of 80.degree. to nearly 180.degree.
as at 18, the extremity being bevelled to form a sharp cutting edge
20. The curl 18 crosses the axis of the shank 14 so that the edge
20 is in a position to engage a surface when the tool is held
nearly parallel thereto. The thickness of the shavings cut from a
bony surface 22 can be regulated to a considerable extent by the
angle which the shank makes with such surface when the tool is
drawn across it with the bend 16 bearing thereon. As indicated in
FIGS. 2 and 3, the greater the angle between the shank 14 and the
surface 22, the thicker will ordinarily be the shavings.
In shaving the bony structure of the nose, it is often desirable to
cut a central groove. For this purpose the tool may be made with a
small extension 24 or 24' projecting beyond the middle of the
cutting edge 20' as indicated in FIGS. 4 and 5. This extension may
be of any suitable shape, a square shape 24 being illustrated in
FIG. 4, a tapered shape 24' being illustrated in FIG. 5, all of the
edges of the extension being sharp cutting edges 26. The extension
may be of variable length and thickness. It also forms an angle or
arc of 80.degree. to 180.degree..
The tools illustrated on the drawing are shown as one-piece tools.
If preferred, the end portion of the shank, including the cutting
edge or edges, may be made detachable for replacement when
desired.
* * * * *