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US6979341B2 Expired / Lapsed US ⏱️ 0.0 years remaining

Expandable preformed structures for deployment in interior body regions

Assignee: Orthophoenix LLC
•
Filing: 2001-04-18
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Granted: 2005-12-27
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Expires: 2021-04-18
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Abstract

Abstract An expandable structure made from an elastomer material is preformed to a desired geometry by exposure to heat and pressure. The structure undergoes controlled expansion and further distention in cancellous bone, with controlled deformation and without stress failure.

Inventors

  • 👤 Robert M Scribner
  • 👤 Karen D Talmadge

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 19:42
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/70; A61B17/7097; A61B17/88; A61B17/885; A61B17/8852; A61B17/8855; A61M25/002; A61M29/00; A61M29/02; A61B17/34; A61B17/3472; A61B2017/00526; A61B2017/00535; A61B2017/00539; A61B2017/00544; A61B2017/00557; A61B17/02; A61B17/025; A61B2017/0256; A61B90/00; A61B90/39; A61M2210/00; A61M2210/02; A61M2210/10; A61M2210/1003; A61M25/1011; Y; Y10; Y10S; Y10S606/00; Y10S606/907; Y10S606/91

Claims Analysis

Total Claims: 18
Claim 1
Independent Claim 216 words
A device comprising a wall made from a flexible material resistant to abrasion by cancellous bone, the wall peripherally defining an interior space and including an expandable region preformed with a normally expanded shape outside bone, the expandable region being expandable beyond its normally expanded shape to reach an inflation volume sized and configured for compacting cancellous bone, the expandable region having proximal and distal ends, the expandable region further having a first expanded section having an interior cross-sectional area adjacent the proximal end, a second expanded section having an interior cross-sectional area adjacent the distal end, and a third section having an interior cross-sectional area located between the first and second expanded sections, when in the normally expanded shape and at the inflation volume, the interior cross-sectional area of the third section being less than the interior cross-sectional area of either the first or second expanded sections, and the first expanded section, the second expanded section, and the third expanded section further having, respectively, a first preformed average wall thickness, a second preformed average wall thickness, and a third preformed average wall thickness, and when in the normally expanded shape and at the inflation volume, the third average wall thickness being greater than either the first average wall thickness or the second average wall thickness.
Claim 2
Independent Claim 216 words
A device comprising a wall made from a flexible material resistant to abrasion by cancellous bone, the wall peripherally defining an interior space and including an expandable region preformed with a normally expanded shape outside bone, the expandable region being expandable beyond its normally expanded shape to reach an inflation volume sized and configured for compacting cancellous bone, the expandable region having proximal and distal ends, the expandable region further having a first expanded section having an interior cross-sectional area adjacent the proximal end, a second expanded section having an interior cross-sectional area adjacent the distal end, and a third section having an interior cross-sectional area located between the first and second expanded sections, when in the normally expanded shape and at the inflation volume, the interior cross-sectional area of the third section being less than the interior cross-sectional area of either the first or second expanded sections, and the first expanded section, the second expanded section, and the third expanded section further having, respectively, a first preformed average wall thickness, a second preformed average wall thickness, and a third preformed average wall thickness, and when in the normally expanded shape and at the inflation volume, the third average wall thickness being greater than either the first average wall thickness or the second average wall thickness.
Claim 3
Dependent Claim 37 words
A device according to claim 1 wherein the expandable region, when expanded beyond its normally expanded shape to reach a given inflation volume, presents a maximum diameter less than a sphere expanded to an equal inflation volume.
Claim 4
Dependent Claim 26 words
A device according to claim 1 wherein the expandable region includes a further expanded shape, outside bone, having a diameter greater than the normally expanded shape.
Claim 5
Dependent Claim 27 words
A device according to claim 3 wherein the expandable region has a further expanded shape inside bone that substantially corresponds to the further expanded shape outside bone.
Claim 6
Dependent Claim 13 words
A device according to claim 1 wherein the expandable region is essentially cylindrical.
Claim 7
Dependent Claim 15 words
A device according to claim 1 wherein the expandable region expands in a non-spherical manner.
Claim 8
Dependent Claim 16 words
A device according to claim 1 wherein the expandable region expands in an essentially cylindrical manner.
Claim 9
Dependent Claim 19 words
A device according to claim 1 wherein the expandable region is preformed by the application of heat and pressure.
Claim 10
Independent Claim 206 words
A device comprising an expandable structure preformed with a normally expanded shape and being expandable beyond its normally expanded shape to a reach an inflation volume sized and configured for manipulating bone, the structure having a wall material peripherally defining an interior space, the wall material being resistant to abrasion by cancellous bone, the structure having a proximal and a distal end, the structure further having a first expandable region located near the distal end and a second expandable region located proximally of the first expandable region, the first and second expandable regions separated by a third region of the structure, the third region having a reduced cross-sectional area as compared to the cross-sectional areas of the first and second regions when the structure is in the normal expanded shape and at the inflation volume, and the first expandable region, the second expandable region, and the third expandable region further having, respectively, a first preformed average wall thickness, a second preformed average wall thickness, and a third preformed average wall thickness, and the third average wall thickness being greater than either the first average wall thickness or the second average wall thickness when the structure is in the normal expanded shape and at the inflation volume.
Claim 11
Independent Claim 206 words
A device comprising an expandable structure preformed with a normally expanded shape and being expandable beyond its normally expanded shape to a reach an inflation volume sized and configured for manipulating bone, the structure having a wall material peripherally defining an interior space, the wall material being resistant to abrasion by cancellous bone, the structure having a proximal and a distal end, the structure further having a first expandable region located near the distal end and a second expandable region located proximally of the first expandable region, the first and second expandable regions separated by a third region of the structure, the third region having a reduced cross-sectional area as compared to the cross-sectional areas of the first and second regions when the structure is in the normal expanded shape and at the inflation volume, and the first expandable region, the second expandable region, and the third expandable region further having, respectively, a first preformed average wall thickness, a second preformed average wall thickness, and a third preformed average wall thickness, and the third average wall thickness being greater than either the first average wall thickness or the second average wall thickness when the structure is in the normal expanded shape and at the inflation volume.
Claim 12
Dependent Claim 78 words
A device according to claim 9 wherein the wall material of the first expandable region substantially surrounds a first maximum cross-sectional area of the interior space, the wall material of the second expandable region substantially surrounds a second maximum cross-sectional area of the interior space, and the wall material of the third region substantially surrounds a minimum cross-sectional area of the interior space, the first and second maximum cross-sectional areas each being larger than the minimum cross-sectional area.
Claim 13
Dependent Claim 12 words
A device according to claim 9 wherein the wall material comprises polyurethane.
Claim 14
Dependent Claim 19 words
A device according to claim 9 wherein the expandable structure is preformed by the application of heat and pressure.
Claim 15
Independent Claim 209 words
A device comprising a wall made from a flexible material resistant to abrasion by cancellous bone, the wall peripherally defining an interior space and including an expandable region preformed with a normally expanded shape and being expandable beyond its normally expanded shape to a reach an inflation volume sized and configured for compacting cancellous bone, the expandable region having proximal and distal ends, the expandable region further having a first expanded section adjacent the distal end, a second expanded section located proximally of the first expanded section, and a third section located between the first and second expanded sections, wherein the average outer diameter of the third section is less than the average outer diameter of either of the first or second expanded sections when the structure is in the normal expanded shape and at the inflation volume, and the first expandable section, the second expandable section, and the third expandable section further having, respectively, a first preformed average wall thickness, a second preformed average wall thickness, and a third preformed average wall thickness, and the third average wall thickness being greater than either the first average wall thickness or the second average wall thickness when the structure is in the normal expanded shape and at the inflation volume.
Claim 16
Independent Claim 209 words
A device comprising a wall made from a flexible material resistant to abrasion by cancellous bone, the wall peripherally defining an interior space and including an expandable region preformed with a normally expanded shape and being expandable beyond its normally expanded shape to a reach an inflation volume sized and configured for compacting cancellous bone, the expandable region having proximal and distal ends, the expandable region further having a first expanded section adjacent the distal end, a second expanded section located proximally of the first expanded section, and a third section located between the first and second expanded sections, wherein the average outer diameter of the third section is less than the average outer diameter of either of the first or second expanded sections when the structure is in the normal expanded shape and at the inflation volume, and the first expandable section, the second expandable section, and the third expandable section further having, respectively, a first preformed average wall thickness, a second preformed average wall thickness, and a third preformed average wall thickness, and the third average wall thickness being greater than either the first average wall thickness or the second average wall thickness when the structure is in the normal expanded shape and at the inflation volume.
Claim 17
Dependent Claim 23 words
A device according to claim 13 wherein the expandable region expands in response to introduction of a flowable material into the interior space.
Claim 18
Dependent Claim 19 words
A device according to claim 13 wherein the expandable region is preformed by the application of heat and pressure.

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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) 2008-12-26 2009-06-27 2009-12-27 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2012-12-26 2013-06-27 2013-12-27 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2016-12-26 2017-06-27 2017-12-27 $7700.00 Window Closed / Lapsed

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