US7465318B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cement-directing orthopedic implants
Assignee: Globus Medical Inc
•
Filing: 2005-04-14
•
Granted: 2008-12-16
•
Expires: 2025-04-14
Abstract
Abstract A cement-directing structure for use in cement-injection bone therapy includes a collapsible, self-restoring braided structure with regions of differential permeability to the bone cement. The regions of differential permeability may be provided by areas where the braided mesh density is greater or lesser than surrounding areas and/or by means of a baffle. After the structure is placed in a void within a bony structure, cement is injected into the interior of the structure then oozes out in preferred directions according to the locations of the regions of differential permeability.
Inventors
- 👤 Andrew R. Sennett
- 👤 William Harwick Gruber
- 👤 Joseph Ernest Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:24
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/70; A61B17/7097; A61B17/7098; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/44; A61F2/441; A61B17/00234; A61F2/442; A61F2/4455; A61F2/46; A61F2/4601; A61F2002/30001; A61F2002/30003; A61F2002/30004; A61F2002/30006; A61F2002/30011; A61F2002/30316; A61F2002/30535; A61F2002/30581; A61F2002/30583; A61F2002/4635; A61F2210/00; A61F2210/0085; A61F2250/00; A61F2250/0014; A61F2250/0015; A61F2250/0023
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
115 words
An expandable orthopedic device adapted for placement in a cavity formed in bone, comprising: a collapsible, self expanding multi-layered braided mesh structure at least partially permeable to a bone cement, wherein the multi-layered braided mesh structure comprises primary members and secondary members; and a baffle comprising at least one coating formed on at least a portion of the braided mesh structure, wherein the baffle is adapted to reduce permeability of that portion of the braided mesh structure, wherein the secondary members have been removed in at least one region of the device to form at least one cement flow window therethrough, and wherein the primary members remain over the at least one cement flow window.
Claim 2
Dependent Claim
115 words
An expandable orthopedic device adapted for placement in a cavity formed in bone, comprising: a collapsible, self expanding multi-layered braided mesh structure at least partially permeable to a bone cement, wherein the multi-layered braided mesh structure comprises primary members and secondary members; and a baffle comprising at least one coating formed on at least a portion of the braided mesh structure, wherein the baffle is adapted to reduce permeability of that portion of the braided mesh structure, wherein the secondary members have been removed in at least one region of the device to form at least one cement flow window therethrough, and wherein the primary members remain over the at least one cement flow window.
Claim 3
Dependent Claim
13 words
The device of claim 1 , wherein the baffle comprises a dip coating.
Claim 4
Dependent Claim
21 words
The device of claim 1 , wherein the baffle is formed on an outer surface of the layered braided mesh structure.
Claim 5
Dependent Claim
16 words
The device of claim 1 , wherein the primary members comprise elastic, heat-setting monofilament wire members.
Claim 6
Dependent Claim
29 words
The device of claim 1 , wherein the primary members have sufficient mechanical strength and elasticity to self-expand toward their nominal shape upon complete insertion into a bone cavity.
Claim 7
Dependent Claim
13 words
The device of claim 1 , wherein the secondary members comprise a polymer.
Claim 8
Dependent Claim
21 words
The device of claim 1 , wherein at least one of the secondary members is more elastic than the primary members.
Claim 9
Dependent Claim
16 words
The device of claim 1 , wherein the secondary members are layered over the primary members.
Claim 10
Independent Claim
145 words
A method of treating a vertebral body comprising the steps of: creating a cavity in a vertebral body; inserting a collapsible, self expanding multi-layered braided mesh structure into the cavity, wherein the multi-layered braided mesh structure comprises: primary members; secondary members; and a baffle comprising at least one coating formed on at least a portion of the braided mesh structure, wherein the baffle is adapted to reduce permeability of that portion of the braided mesh structure, wherein the secondary members have been removed in at least one region of the device to form at least one cement flow window therethrough, and wherein the primary members remain over the at least one cement flow window; and a injecting a bone cement into the expanded braided mesh structure, wherein the bone cement flows preferentially out of the braided mesh structure through the at least one flow window.
Claim 11
Independent Claim
145 words
A method of treating a vertebral body comprising the steps of: creating a cavity in a vertebral body; inserting a collapsible, self expanding multi-layered braided mesh structure into the cavity, wherein the multi-layered braided mesh structure comprises: primary members; secondary members; and a baffle comprising at least one coating formed on at least a portion of the braided mesh structure, wherein the baffle is adapted to reduce permeability of that portion of the braided mesh structure, wherein the secondary members have been removed in at least one region of the device to form at least one cement flow window therethrough, and wherein the primary members remain over the at least one cement flow window; and a injecting a bone cement into the expanded braided mesh structure, wherein the bone cement flows preferentially out of the braided mesh structure through the at least one flow window.
Claim 12
Dependent Claim
13 words
The method of claim 9 , wherein the baffle comprises a dip coating.
Claim 13
Dependent Claim
21 words
The method of claim 9 , wherein the baffle is formed on an outer surface of the layered braided mesh structure.
Claim 14
Dependent Claim
16 words
The method of claim 9 , wherein the primary members comprise elastic, heat-setting monofilament wire members.
Claim 15
Dependent Claim
29 words
The method of claim 9 , wherein the primary members have sufficient mechanical strength and elasticity to self-expand toward their nominal shape upon complete insertion into a bone cavity.
Claim 16
Dependent Claim
13 words
The method of claim 9 , wherein the secondary members comprise a polymer.
Claim 17
Dependent Claim
21 words
The method of claim 9 , wherein at least one of the secondary members is more elastic than the primary members.
Claim 18
Dependent Claim
16 words
The method of claim 9 , wherein the secondary members are layered over the primary members.
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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) | 2011-12-16 | 2012-06-16 | 2012-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2015-12-16 | 2016-06-16 | 2016-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2019-12-16 | 2020-06-16 | 2020-12-16 | $7700.00 | Window Closed / Lapsed |