US6979352B2
Expired / Lapsed
US
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Methods of performing embolism-free vertebroplasty and devices therefor
Assignee: DePuy Spine LLC
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Filing: 2002-11-21
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Granted: 2005-12-27
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Expires: 2022-11-21
Abstract
Abstract This invention relates to improved vertebroplasty procedures for reducing embolisms, leakage and cement loosening.
Inventors
- 👤 Martin A. Reynolds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:00
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/88; A61B17/8802; A61B17/8805; A61B17/8822; A61B2017/564
Claims Analysis
Total Claims: 38
Claim 1
Independent Claim
60 words
A method of preparing a fractured vertebral body having a porous cancellous bone structure having an open porosity and soft tissue contained therein, comprising the steps of: a) removing at least a portion of the interstitial soft tissue from the cancellous bone structure of the fractured vertebral body to create a skeleton, and b) injecting bone paste into the skeleton.
Claim 2
Independent Claim
60 words
A method of preparing a fractured vertebral body having a porous cancellous bone structure having an open porosity and soft tissue contained therein, comprising the steps of: a) removing at least a portion of the interstitial soft tissue from the cancellous bone structure of the fractured vertebral body to create a skeleton, and b) injecting bone paste into the skeleton.
Claim 3
Dependent Claim
21 words
The method of claim 1 wherein essentially all of the soft tissue within the open porosity is removed from the skeleton.
Claim 4
Dependent Claim
27 words
The method of claim 1 wherein the skeleton is created by removal of at least 50% of the soft tissue within the region of the open porosity.
Claim 5
Dependent Claim
24 words
The method of claim 1 further comprising the step of: c) occluding an injured vein present within the vertebral body prior to step b).
Claim 6
Dependent Claim
18 words
The method of claim 4 wherein the vein is injured during a compression fracture of the vertebral body.
Claim 7
Independent Claim
27 words
The method of step 4 wherein the vein is injured by a further step of: d) advancing a cannula into the vertebral body prior to step a).
Claim 8
Independent Claim
27 words
The method of step 4 wherein the vein is injured by a further step of: d) advancing a cannula into the vertebral body prior to step a).
Claim 9
Dependent Claim
14 words
The method of claim 1 wherein the step of removing is accomplished by suction.
Claim 10
Dependent Claim
46 words
The method of claim 1 wherein the vertebral body has a fracture having an effective pore size, and the skeleton has an effective pore size which is greater than the effective pore size of the fracture, thereby providing a path of least resistance for the cement.
Claim 11
Dependent Claim
47 words
The method of claim 1 wherein the injection of bone paste is provided through a first passage, and wherein the method further comprises the step of: c) providing a relief passage in fluid connection with the skeleton, thereby providing a path of least resistance for the cement.
Claim 12
Dependent Claim
12 words
The method of claim 1 wherein the bone paste is bone cement.
Claim 13
Dependent Claim
13 words
The method of claim 1 wherein the vertebral body has a compression fracture.
Claim 14
Dependent Claim
13 words
The method of claim 1 wherein the vertebral body has a burst fracture.
Claim 15
Independent Claim
60 words
A method of preparing a tumorous vertebral body having a porous cancellous bone structure having an open porosity and soft tissue contained therein, comprising the steps of: a) removing at least a portion of the interstitial soft tissue from the cancellous bone structure of the tumourous vertebral body to create a skeleton, and b) injecting bone paste into the skeleton.
Claim 16
Independent Claim
60 words
A method of preparing a tumorous vertebral body having a porous cancellous bone structure having an open porosity and soft tissue contained therein, comprising the steps of: a) removing at least a portion of the interstitial soft tissue from the cancellous bone structure of the tumourous vertebral body to create a skeleton, and b) injecting bone paste into the skeleton.
Claim 17
Independent Claim
60 words
A method of preparing an osteoporotic vertebral body having a porous cancellous bone structure having an open porosity and soft tissue contained therein, comprising the steps of: a) removing at least a portion of the interstitial soft tissue from the cancellous bone structure of an osteoporotic vertebral body to create a skeleton, and b) injecting bone paste into the skeleton.
Claim 18
Independent Claim
60 words
A method of preparing an osteoporotic vertebral body having a porous cancellous bone structure having an open porosity and soft tissue contained therein, comprising the steps of: a) removing at least a portion of the interstitial soft tissue from the cancellous bone structure of an osteoporotic vertebral body to create a skeleton, and b) injecting bone paste into the skeleton.
Claim 19
Dependent Claim
53 words
A structure prepared from a natural fractured vertebral body having a porous cancellous bone structure having bone marrow and fat therein, comprising: a) a skeleton portion disposed within the porous cancellous bone structure of the fractured vertebral body, and b) a bone paste interdigitated within at least a portion of the skeleton portion.
Claim 20
Dependent Claim
53 words
A structure prepared from a natural fractured vertebral body having a porous cancellous bone structure having bone marrow and fat therein, comprising: a) a skeleton portion disposed within the porous cancellous bone structure of the fractured vertebral body, and b) a bone paste interdigitated within at least a portion of the skeleton portion.
Claim 21
Dependent Claim
13 words
The structure of claim 15 wherein the bone paste is a bone cement.
Claim 22
Dependent Claim
15 words
The structure of claim 15 further comprising; c) a void disposed within the skeleton portion.
Claim 23
Dependent Claim
24 words
The structure of claim 15 further comprising; c) a first passage connecting the skeleton portion with the cortical bone portion of the vertebral body.
Claim 24
Dependent Claim
24 words
The structure of claim 18 further comprising; d) a second passage connecting the skeleton portion with the cortical bone portion of the vertebral body.
Claim 25
Dependent Claim
16 words
The structure of claim 15 wherein the natural vertebral body is less than 3 weeks old.
Claim 26
Dependent Claim
14 words
The structure of claim 15 wherein the natural vertebral body has a compression fracture.
Claim 27
Dependent Claim
12 words
The structure of claim 15 wherein the natural vertebral body is osteoporotic.
Claim 28
Dependent Claim
32 words
The structure of claim 15 wherein the skeleton is characterized by an open porosity created by removal of at least 10% of the soft tissue within the region of the open porosity.
Claim 29
Dependent Claim
32 words
The structure of claim 15 wherein the skeleton is characterized by an open porosity created by removal of at least 25% of the soft tissue within the region of the open porosity.
Claim 30
Dependent Claim
32 words
The structure of claim 15 wherein the skeleton is characterized by an open porosity created by removal of at least 50% of the soft tissue within the region of the open porosity.
Claim 31
Dependent Claim
31 words
The structure of claim 15 wherein the skeleton is characterized by an open porosity created by removal of essentially all of the soft tissue within the region of the open porosity.
Claim 32
Dependent Claim
11 words
The structure of claim 15 wherein the skeleton comprises a void.
Claim 33
Dependent Claim
14 words
The structure of claim 27 wherein the bone paste is present within the void.
Claim 34
Dependent Claim
13 words
The structure of claim 15 wherein the vertebral body has a burst fracture.
Claim 35
Dependent Claim
52 words
A structure prepared from a tumorous vertebral body having a porous cancellous bone structure having bone marrow and fat therein, comprising: a) a skeleton portion disposed within the porous cancellous bone structure of the tumorous vertebral body, and b) a bone paste interdigitated within at least a portion of the skeleton portion.
Claim 36
Dependent Claim
52 words
A structure prepared from a tumorous vertebral body having a porous cancellous bone structure having bone marrow and fat therein, comprising: a) a skeleton portion disposed within the porous cancellous bone structure of the tumorous vertebral body, and b) a bone paste interdigitated within at least a portion of the skeleton portion.
Claim 37
Dependent Claim
52 words
A structure prepared from an osteoporotic vertebral body having a porous cancellous bone structure having bone marrow and fat therein, comprising: a) a skeleton portion disposed within the porous cancellous bone structure of the osteoporotic vertebral body, and b) a bone paste interdigitated within at least a portion of the skeleton portion.
Claim 38
Dependent Claim
52 words
A structure prepared from an osteoporotic vertebral body having a porous cancellous bone structure having bone marrow and fat therein, comprising: a) a skeleton portion disposed within the porous cancellous bone structure of the osteoporotic vertebral body, and b) a bone paste interdigitated within at least a portion of the skeleton portion.
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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 |