US5239569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiographic analysis of bones
Assignee: Individual
•
Filing: 1991-09-03
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Granted: 1993-08-24
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Expires: 2011-09-03
Abstract
Abstract A hand portable aid for use in the real time radiographic analysis of bones and comprising a substantially rigid sheet of x-ray pervious material at least as large as the bone and carrying a radio-opaque marker against which alignment of the bone may be checked.
Inventors
- 👤 Michael Saleh
- 👤 Stephen P. Harriman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:28
CPC Classifications
A; A61; A61B; A61B6/00; A61B6/04; A61B6/0407; A61B6/0442; A61B17/00; A61B17/56; A61B17/58; A61B2017/00831; A61B2017/00902; A61B6/44; A61B6/4423; A61B90/00; A61B90/39
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
73 words
A hand portable aid for use in the real time radiographic analysis of bones and comprising a substantially rigid sheet of x-ray pervious material at least as large as the bone and carrying a radio-opaque marker sealed within the sheet against which marker alignment of the bone is checked in use wherein the marker further comprises a longitudinal wire and a plurality of transverse wires extending on either side of said longitudinal wire.
Claim 2
Dependent Claim
73 words
A hand portable aid for use in the real time radiographic analysis of bones and comprising a substantially rigid sheet of x-ray pervious material at least as large as the bone and carrying a radio-opaque marker sealed within the sheet against which marker alignment of the bone is checked in use wherein the marker further comprises a longitudinal wire and a plurality of transverse wires extending on either side of said longitudinal wire.
Claim 3
Dependent Claim
84 words
A hand portable aid for use in the real time radiographic analysis of bone comprising a substantially rigid sheet of x-ray pervious material at least as large as the bone and carrying a grid of radio-opaque markers including a longitudinal wire, a plurality of transverse reference wires symmetrically extending a grid width distance from the longitudial wire and a plurality of intermediate reference wires extending symmetrically a distance less than the grid width distance from the longitudinal wire and positioned intermediate the reference wires.
Claim 4
Dependent Claim
84 words
A hand portable aid for use in the real time radiographic analysis of bone comprising a substantially rigid sheet of x-ray pervious material at least as large as the bone and carrying a grid of radio-opaque markers including a longitudinal wire, a plurality of transverse reference wires symmetrically extending a grid width distance from the longitudial wire and a plurality of intermediate reference wires extending symmetrically a distance less than the grid width distance from the longitudinal wire and positioned intermediate the reference wires.
Claim 5
Dependent Claim
16 words
An aid according to claim 2 wherein the marker comprises a grid of discrete lead wires.
Claim 6
Dependent Claim
14 words
An aid according to claim 3 wherein the grid is sealed within the sheet.
Claim 7
Dependent Claim
11 words
An aid according to claim 4 wherein the sheet is transparent.
Claim 8
Dependent Claim
12 words
An aid according to claim 5 wherein the sheet is of polycarbonate.
Claim 9
Dependent Claim
13 words
An aid according to claim 5 wherein the sheet is of polymethyl methacrylate.
Claim 10
Dependent Claim
21 words
An aid according to claim 7 wherein said sheet comprises two layers of polymerized methyl methacrylate having said marker sandwiched therebetween.
Claim 11
Dependent Claim
81 words
A hand portable aid for use in real time radiographic analysis of bones and comprising a substantially rigid sheet of x-ray pervious material at least as large as the bone to be analyzed, said sheet carrying a radiographic analysis marker against which marker alignment of the bone is checked, in use said marker comprising a first radio-opaque line at least as long as the bone to be analyzed, and a plurality of spaced second radio-opaque lines perpendicular to said first line.
Claim 12
Dependent Claim
81 words
A hand portable aid for use in real time radiographic analysis of bones and comprising a substantially rigid sheet of x-ray pervious material at least as large as the bone to be analyzed, said sheet carrying a radiographic analysis marker against which marker alignment of the bone is checked, in use said marker comprising a first radio-opaque line at least as long as the bone to be analyzed, and a plurality of spaced second radio-opaque lines perpendicular to said first line.
Claim 13
Dependent Claim
44 words
An aid according to claim 9 wherein said plurality of second radio-opaque lines includes two spaced reference lines symmetrical about said first line, and a plurality of equispaced lines intermediate said reference lines, symmetrical about said first line and shorter than said reference lines.
Claim 14
Dependent Claim
37 words
An aid according to claim 9 and further including rule comprising a narrow strip of x-ray pervious material having a single straight radio-opaque marker extending longitudinally therethrough, said rule being shorter than the width of said aid.
Claim 15
Independent Claim
126 words
A method of using a hand portable aid for use in real time radiographic analysis of bones in preparation of a bone for surgery or treatment, said aid having a substantially rigid sheet of x-ray pervious material at least as large as a bone to be analyzed, said sheet carrying a radiographic analysis marker against which marker alignment of the bone is checked in use, said marker including a first radio-opaque line at least as long as the bone to be analyzed and a plurality of spaced second radio-opaque lines perpendicular to said first line, and method comprising the steps of: placing the bone against said aid; providing an x-ray image of the bone against said aid; and comparing the relative position of bone and marker.
Claim 16
Independent Claim
126 words
A method of using a hand portable aid for use in real time radiographic analysis of bones in preparation of a bone for surgery or treatment, said aid having a substantially rigid sheet of x-ray pervious material at least as large as a bone to be analyzed, said sheet carrying a radiographic analysis marker against which marker alignment of the bone is checked in use, said marker including a first radio-opaque line at least as long as the bone to be analyzed and a plurality of spaced second radio-opaque lines perpendicular to said first line, and method comprising the steps of: placing the bone against said aid; providing an x-ray image of the bone against said aid; and comparing the relative position of bone and marker.
Claim 17
Dependent Claim
25 words
A method according to claim 12 and including the fourth step of: adjusting the position of said bone until the image adopts a desired alignment.
Claim 18
Dependent Claim
30 words
A method according to claim 13 and including the fifth step of adjusting the position of the joints of said bone until the respective joint axes adopt a desired alignment.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-08-23 | 1997-02-22 | 1997-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-08-23 | 2001-02-22 | 2001-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-08-23 | 2005-02-22 | 2005-08-24 | $7700.00 | Window Closed / Lapsed |