US6168599B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Long bone reamer
Assignee: Individual
•
Filing: 1997-04-14
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Granted: 2001-01-02
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Expires: 2017-04-14
Abstract
Abstract A long bone reamer apparatus is assembled from a plurality of blades that interlink with each other. According to a first embodiment, six long cutting blades are held in position by a plurality of disks, each having six blade receiving slots spaced at 60 degrees with respect to each other. The longitudinal axis of each of the blade receiving slots is slightly offset from the center of the disk so that tabs on opposing blades contact and are welded to each other. According to a second embodiment of the invention, four blades are connected together in a boxlike arrangement having a long rod in the center thereof for support. A first set of the blades includes an interior aperture with a plurality of tabs which engage with a plurality of tab receiving slots in the second set of blades. Both sets of reamers have a head with blade portions arranged to lie along the surface of a semi-circle and, moreover, both embodiments have longitudinal sidewalls having cutting edges, which lie in the plane of a cylinder.
Inventors
- 👤 Allan S. Frieze
- 👤 David Nalepa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:02
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/16; Y; Y10; Y10T; Y10T408/00; Y10T408/89; Y10T408/909
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
228 words
A long bone reamer apparatus ( 10 , 200 ) comprising: a plurality of N long blades ( 18 ), each blade, ( 22 a , 22 b , 34 a , 34 b , 46 a , 46 b ) having a long, relatively straight cutting edge ( 24 a , 24 b , 36 a , 36 b , 48 a , 48 b ) and a partially rounded leading cutting tip ( 26 a , 26 b , 38 a , 38 b , 50 a , 50 b ); and, holding means ( 20 ) for holding said blades ( 22 a , 22 b , 34 a , 34 b , 46 a , 46 b ) together, said holding means comprising a plurality of disks ( 20 ) each having a plurality of blade receiving slots ( 60 ) therein, wherein said reamer apparatus ( 10 , 200 ) when assembled has a head portion ( 12 ) with cutting tips ( 26 a , 26 b , 38 a , 38 b , 50 a , 50 b ) that lie in a semi-circular plane, and a side portion ( 14 ) with said cutting edges ( 24 a , 24 b , 36 a , 36 b , 48 a , 48 b ) that lie in a cylindrical plane.
Claim 2
Dependent Claim
228 words
A long bone reamer apparatus ( 10 , 200 ) comprising: a plurality of N long blades ( 18 ), each blade, ( 22 a , 22 b , 34 a , 34 b , 46 a , 46 b ) having a long, relatively straight cutting edge ( 24 a , 24 b , 36 a , 36 b , 48 a , 48 b ) and a partially rounded leading cutting tip ( 26 a , 26 b , 38 a , 38 b , 50 a , 50 b ); and, holding means ( 20 ) for holding said blades ( 22 a , 22 b , 34 a , 34 b , 46 a , 46 b ) together, said holding means comprising a plurality of disks ( 20 ) each having a plurality of blade receiving slots ( 60 ) therein, wherein said reamer apparatus ( 10 , 200 ) when assembled has a head portion ( 12 ) with cutting tips ( 26 a , 26 b , 38 a , 38 b , 50 a , 50 b ) that lie in a semi-circular plane, and a side portion ( 14 ) with said cutting edges ( 24 a , 24 b , 36 a , 36 b , 48 a , 48 b ) that lie in a cylindrical plane.
Claim 3
Dependent Claim
11 words
The apparatus of claim 1 wherein N equals at least three.
Claim 4
Dependent Claim
11 words
The apparatus of claim 2 wherein N equals at least four.
Claim 5
Dependent Claim
133 words
The apparatus of claim 3 wherein each blade ( 22 a , 22 b , 34 a , 34 b , 46 a , 46 b ) has a plurality of tabs ( 30 a , 30 b , 42 a , 42 b , 54 a , 54 b ) on side of said blade ( 28 a , 28 b , 40 a , 40 b , 52 a , 52 b ) opposite from said side long, relatively straight cutting edge ( 24 a , 24 b , 36 a , 36 b , 48 a , 48 b ), wherein said tabs ( 30 a , 30 b , 42 a , 42 b , 54 a , 54 b ) of opposing blades contact and support each other.
Claim 6
Dependent Claim
29 words
The apparatus of claim 4 wherein N equals 6 and said blade receiving slots ( 60 ) in said disk are spaced approximately 60° with respect to each other.
Claim 7
Dependent Claim
63 words
The apparatus of claim 5 wherein said blade receiving slots ( 60 ) have a long axis ( 64 ) that bypasses the center ( 62 ) of said disks ( 20 ) so that said tabs ( 30 a , 30 b , 42 a , 42 b , 54 a , 54 b ) can overlap without interfering with each other.
Claim 8
Dependent Claim
20 words
The apparatus ( 200 ) of claim 1 wherein said partially rounded cutting tips include teeth ( 202 ) thereon.
Claim 9
Dependent Claim
321 words
A long bone reamer apparatus ( 100 ) comprising: a plurality of N long blades ( 150 ), where N equals at least four, each blade ( 110 a , 110 b , 130 a , 130 b ) having a long, relatively straight cutting edge ( 116 a , 116 b , 134 a , 134 b ) and a partially rounded leading cutting tip ( 114 a , 114 b , 132 a , 132 b ), said plurality of N long blades including a first set of blades ( 110 a , 110 b ) each including an aperture ( 112 a , 112 b ) therein, a pair of long opposing internal sides ( 122 a , 122 b ), each internal side ( 122 a , 122 b ) including a plurality of tabs ( 120 a , 120 b ) thereon, and, a second set of blades ( 130 a , 130 b ) having a plurality of tab receiving slots ( 138 a , 138 b ) therein, wherein said first ( 110 a , 110 b ) and second ( 130 a , 130 b ) set of blades have cutting edges ( 116 a , 116 b , 134 a , 134 b ) on the sides thereof; and, holding means ( 120 a , 120 b , 138 a , 138 b , 140 ) for holding said blades ( 110 a , 110 b , 130 a , 130 b ) together, wherein said reamer apparatus ( 100 ) when assembled has a head portion ( 102 ) with cutting tips ( 102 a , 102 b , 132 a , 132 b ) that lie in a semi-circular plane, and a side portion ( 104 ) with said cutting edges ( 116 a , 116 b , 134 a , 134 b ) that lie in a cylindrical plane.
Claim 10
Dependent Claim
321 words
A long bone reamer apparatus ( 100 ) comprising: a plurality of N long blades ( 150 ), where N equals at least four, each blade ( 110 a , 110 b , 130 a , 130 b ) having a long, relatively straight cutting edge ( 116 a , 116 b , 134 a , 134 b ) and a partially rounded leading cutting tip ( 114 a , 114 b , 132 a , 132 b ), said plurality of N long blades including a first set of blades ( 110 a , 110 b ) each including an aperture ( 112 a , 112 b ) therein, a pair of long opposing internal sides ( 122 a , 122 b ), each internal side ( 122 a , 122 b ) including a plurality of tabs ( 120 a , 120 b ) thereon, and, a second set of blades ( 130 a , 130 b ) having a plurality of tab receiving slots ( 138 a , 138 b ) therein, wherein said first ( 110 a , 110 b ) and second ( 130 a , 130 b ) set of blades have cutting edges ( 116 a , 116 b , 134 a , 134 b ) on the sides thereof; and, holding means ( 120 a , 120 b , 138 a , 138 b , 140 ) for holding said blades ( 110 a , 110 b , 130 a , 130 b ) together, wherein said reamer apparatus ( 100 ) when assembled has a head portion ( 102 ) with cutting tips ( 102 a , 102 b , 132 a , 132 b ) that lie in a semi-circular plane, and a side portion ( 104 ) with said cutting edges ( 116 a , 116 b , 134 a , 134 b ) that lie in a cylindrical plane.
Claim 11
Dependent Claim
45 words
The apparatus of claim 8 further including a rod ( 140 ) means locatable on the inside of said reamer apparatus ( 100 ) for keeping said blades ( 110 a , 110 b , 130 a , 130 b ) in an assembled condition.
Claim 12
Dependent Claim
16 words
The apparatus of claim 9 wherein said rod ( 140 ) has a round cross section.
Claim 13
Dependent Claim
16 words
The apparatus of claim 9 wherein said rod ( 150 ) has a square cross section.
Claim 14
Dependent Claim
20 words
The apparatus of claim 9 wherein said rod ( 140 , 150 ) is formed by high temperature resistant plastic.
Claim 15
Dependent Claim
40 words
The apparatus of claim 9 wherein said rod ( 140 , 150 ) is welded in at least one location to at least one of said blades ( 110 a , 110 b , 130 a , 130 b ).
Claim 16
Dependent Claim
17 words
The apparatus ( 100 ) of claim 9 wherein said partially rounded cutting tips include teeth thereon.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-01-02 | 2004-07-03 | 2005-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-01-02 | 2008-07-03 | 2009-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-01-02 | 2012-07-03 | 2013-01-02 | $7700.00 | Window Closed / Lapsed |