Patent AT233699B successfully refreshed from Google Patents.
USH571H
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double-bladed, water-cooled attachment for surgical bone cutting saw and method for using and assembling the same
Assignee: United States Department of the Army
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Filing: 1986-02-20
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Granted: 1989-02-07
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Expires: 2006-02-20
Abstract
Abstract The invention is directed to a simple attachment for a surgical bone cutt or osteotomy saw. The invention, consisting of a calibrated T-bar, saw blade holder assemblies, and cooling assemblies, permits two standard surgical saw blades to be attached in parallel to a nitrogen powered surgical reciprocating saw. Thus, a surgeon can make measured, parallel bone cuts in a single motion. The cooling assemblies, pivotally attached to the blade holder assemblies, permit water to be directed down and into the surgical site during the entire cutting operation thereby eliminating bone necrosis and reducing the risk of post-surgical bone morbidity.
Inventors
- 👤 Jeffrey O. Hollinger
- 👤 John P. Schmitz
- 👤 Eric S. Koppelman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:09
CPC Classifications
B; B23; B23D; B23D49/00; B23D49/003; A; A61; A61B; A61B17/00; A61B17/14; A61B17/142; A61B17/144; B23D59/00; B23D59/04
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
55 words
An attachment for a surgical saw motor comprising: (a) means for connecting two surgical saw blades to said saw motor, so that two parallel cuts can be made simultaneously; and (b) means for cooling said surgical saw blades and the bone areas adjacent thereto when said surgical saw blades are engaged in a cutting operation.
Claim 2
Dependent Claim
55 words
An attachment for a surgical saw motor comprising: (a) means for connecting two surgical saw blades to said saw motor, so that two parallel cuts can be made simultaneously; and (b) means for cooling said surgical saw blades and the bone areas adjacent thereto when said surgical saw blades are engaged in a cutting operation.
Claim 3
Dependent Claim
20 words
The attachment as recited in claim 1, wherein said connecting means are adjustable and calibrated, permitting variable width, measured cuts.
Claim 4
Dependent Claim
83 words
The attachment as recited in claim 1, wherein said connecting means comprises: (a) a T-bar, attached to said saw motor, which is rigid and calibrated; (b) two blade holder assemblies one for each of said surgical saw blades, said blade holder assemblies each containing a hole permitting said blade holder assemblies to be slidably mounted on said T-bar; (c) means for securing said blade holder assemblies to said T-bar; and (d) means for securing said surgical saw blades to said blade holder assemblies.
Claim 5
Dependent Claim
41 words
The attachment as recited in claim 1, wherein said cooling means are pivotally attached to said connecting means, permitting said cooling means to pivot away from said surgical saw blades as said surgical saw blades are engaged in a cutting operation.
Claim 6
Dependent Claim
38 words
The attachment as recited in claim 4, wherein said cooling means are disposed along the length and both sides of each of said saw blades and contain a plurality of openings through which a fluid may be ejected.
Claim 7
Dependent Claim
75 words
The attachment as recited in claim 1, wherein said cooling means comprises: (a) a fluid receiver hich is pivotally attached to said connecting means and contains a fluid passageway; and (b) a shroud flexibly and fluidly connected to said fluid receiver and disposed over the top and along the length and both sides of said surgical saw blades and containing a fluid passageway and a plurality of openings through which a fluid may be ejected.
Claim 8
Dependent Claim
151 words
An attachment for a reciprocating surgical saw motor comprising: (a) a T-bar, attached to said saw motor, which is rigid and calibrated; (b) two blade holder assemblies one for each of two surgical saw blades, said blade holder assemblies each containing a hole permitting said blade holder assemblies to be slidably mounted on said T-bar; (c) means for securing said blade holder assemblies to said T-bar; (d) means for securing said surgical saw blades to said blade holder assemblies; (e) two fluid receivers each pivotally attached to one of said blade holder assemblies and each containing a fluid passageway; and (f) two shrouds each flexibly and fluidly connected to one of said fluid receivers and disposed over the top and along the length and both sides of one of said surgical saw blades and each containing a fluid passageway and a plurality of openings through which a fluid may be ejected.
Claim 9
Dependent Claim
151 words
An attachment for a reciprocating surgical saw motor comprising: (a) a T-bar, attached to said saw motor, which is rigid and calibrated; (b) two blade holder assemblies one for each of two surgical saw blades, said blade holder assemblies each containing a hole permitting said blade holder assemblies to be slidably mounted on said T-bar; (c) means for securing said blade holder assemblies to said T-bar; (d) means for securing said surgical saw blades to said blade holder assemblies; (e) two fluid receivers each pivotally attached to one of said blade holder assemblies and each containing a fluid passageway; and (f) two shrouds each flexibly and fluidly connected to one of said fluid receivers and disposed over the top and along the length and both sides of one of said surgical saw blades and each containing a fluid passageway and a plurality of openings through which a fluid may be ejected.
Claim 10
Independent Claim
66 words
A method of making simultaneous parallel cuts during a surgical bone cutting operation and reducing the heat in the bone generated by said cutting operation, which comprises the steps of: (a) cutting the bone using a surgical saw motor which has two surgical saw blades connected in parallel thereto; and (b) cooling said surgical saw blades and the bone areas adjacent thereto during said cutting operation.
Claim 11
Independent Claim
66 words
A method of making simultaneous parallel cuts during a surgical bone cutting operation and reducing the heat in the bone generated by said cutting operation, which comprises the steps of: (a) cutting the bone using a surgical saw motor which has two surgical saw blades connected in parallel thereto; and (b) cooling said surgical saw blades and the bone areas adjacent thereto during said cutting operation.
Claim 12
Independent Claim
147 words
A method of assembling an attachment for a surgical saw motor, which comprises the steps of: (a) attaching to said saw motor a T-bar which is rigid and calibrated; (b) mounting slidably on said T-bar two blade holder assemblies one for each of two surgical saw blades; (c) securing said blade holder assemblies to said T-bar; (d) securing said surgical saw blades to said blade holder assemblies; (e) attaching pivotally to each of said blade holder assemblies a fluid receiver, each of said fluid receivers containing a fluid passageway; and (f) connecting flexibly and fluidly to each of said fluid receivers a shroud, each of said shrouds being disposed over the top and along the length and both sides of one of said surgical saw blades and each of said shrouds containing a fluid passageway and a plurality of openings through which a fluid may be ejected.
Claim 13
Independent Claim
147 words
A method of assembling an attachment for a surgical saw motor, which comprises the steps of: (a) attaching to said saw motor a T-bar which is rigid and calibrated; (b) mounting slidably on said T-bar two blade holder assemblies one for each of two surgical saw blades; (c) securing said blade holder assemblies to said T-bar; (d) securing said surgical saw blades to said blade holder assemblies; (e) attaching pivotally to each of said blade holder assemblies a fluid receiver, each of said fluid receivers containing a fluid passageway; and (f) connecting flexibly and fluidly to each of said fluid receivers a shroud, each of said shrouds being disposed over the top and along the length and both sides of one of said surgical saw blades and each of said shrouds containing a fluid passageway and a plurality of openings through which a fluid may be ejected.
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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) | 1992-02-07 | 1992-08-08 | 1993-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-07 | 1996-08-08 | 1997-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-07 | 2000-08-08 | 2001-02-07 | $7700.00 | Window Closed / Lapsed |