US6506194B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Medullary plug including an external shield and an internal valve
Assignee: Individual
•
Filing: 2000-06-08
•
Granted: 2003-01-14
•
Expires: 2020-06-08
Abstract
Abstract A plug for stopping the flow of bone cement in a channel within bone, such as the intramedullary bone canal or a previously prepared channel, includes an elastomeric inflatable structure protected from bone fragments and sharp edges by a shield extending around distal and peripheral sides of the inflatable structure. This inflatable structure is preferably formed as a sleeve extending around a core. The shield includes a distal end fastened to the core and a flexible portion expandable with inflation of the inflatable structure. The core is also removably connected to an insertion tool, with passageways in the insertion tool and in the core being used to insert a fluid into the inflatable structure. A valve extends as a sleeve around the core, and over the passageway, allowing fluid to flow into the inflatable structure, but preventing it from flowing out of the inflatable structure.
Inventors
- 👤 Mohammed Ali Hajianpour
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:53
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/46; A61F2/4603; A61F2/4614; A61F2/30721; A61F2/30723; A61B; A61B90/00; A61B90/39; A61F2/32; A61F2/36; A61F2/3662; A61F2/3676; A61F2002/30001; A61F2002/30003; A61F2002/3006; A61F2002/30069; A61F2002/3008; A61F2002/30108; A61F2002/30199; A61F2002/30205; A61F2002/3021; A61F2002/30217; A61F2002/4625; A61F2002/4627; A61F2002/4631; A61F2230/00; A61F2230/0063; A61F2230/0067; A61F2250/00; A61F2250/0058; A61F2250/0096; A61F2250/0098
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
168 words
Apparatus for plugging a channel within a bone to stop the flow of bone cement through said channel, wherein said apparatus comprises: a bone plug insertable within said channel, wherein said bone plug includes an inflatable structure, a core attached to said inflatable structure, wherein said core includes a distal portion extending beyond a distal end of said inflatable structure, a shield extending from said distal portion of said core outwardly around and along said inflatable structure, and a valve admitting a fluid into said inflatable structure and preventing a flow of said fluid from said inflatable structure, wherein said core includes a core passageway for said fluid injected into said inflatable structure, and wherein said shield expands with inflation of said inflatable structure, and wherein said shield is substantially more resistant to damage from sharp objects than said inflatable structure; and an elongated insertion tool removably connected to said core, wherein said elongated insertion tool includes a tool passageway for said fluid injected into said core passageway.
Claim 2
Dependent Claim
168 words
Apparatus for plugging a channel within a bone to stop the flow of bone cement through said channel, wherein said apparatus comprises: a bone plug insertable within said channel, wherein said bone plug includes an inflatable structure, a core attached to said inflatable structure, wherein said core includes a distal portion extending beyond a distal end of said inflatable structure, a shield extending from said distal portion of said core outwardly around and along said inflatable structure, and a valve admitting a fluid into said inflatable structure and preventing a flow of said fluid from said inflatable structure, wherein said core includes a core passageway for said fluid injected into said inflatable structure, and wherein said shield expands with inflation of said inflatable structure, and wherein said shield is substantially more resistant to damage from sharp objects than said inflatable structure; and an elongated insertion tool removably connected to said core, wherein said elongated insertion tool includes a tool passageway for said fluid injected into said core passageway.
Claim 3
Dependent Claim
31 words
The apparatus of claim 1 , wherein said inflatable structure extends as a sleeve over said core, being fastened to said core at proximal and distal ends of said inflatable structure.
Claim 4
Dependent Claim
56 words
The apparatus of claim 2 , wherein said valve extends as a sleeve over said core passageway within said inflatable structure, blocking movement of said fluid from said inflatable structure into said core passageway, and said fluid flows through said sleeve and out an end of said sleeve into said inflatable structure from said core passageway.
Claim 5
Dependent Claim
14 words
The apparatus of claim 3 , wherein said valve is composed of an elastomer.
Claim 6
Dependent Claim
45 words
The apparatus of claim 2 , wherein a distal portion of said core extends past said distal end of said inflatable structure, said shield includes a distal portion fastened to said distal portion of said core and a flexible portion extending over said inflatable structure.
Claim 7
Dependent Claim
14 words
The apparatus of claim 5 , wherein said flexible portion includes a pleated shape.
Claim 8
Dependent Claim
41 words
The apparatus of claim 6 , wherein said flexible portion includes a first conical portion extending from said distal portion of said shield, with an enlarged end of said first conical portion at a proximal end of said first conical portion.
Claim 9
Dependent Claim
19 words
The apparatus of claim 7 , wherein said flexible portion extends around an entire length of said inflatable structure.
Claim 10
Dependent Claim
35 words
The apparatus of claim 7 , wherein said flexible portion additionally includes a second conical portion with an enlarged end of said second conical portion extending from said enlarged end of said first conical portion.
Claim 11
Dependent Claim
16 words
The apparatus of claim 9 , wherein said second conical portion includes a slidable proximal end.
Claim 12
Dependent Claim
56 words
The apparatus of claim 1 , wherein said valve extends as a sleeve over said core passageway within said inflatable structure, blocking movement of said fluid from said inflatable structure into said core passageway, and said fluid flows through said sleeve and out an end of said sleeve into said inflatable structure from said core passageway.
Claim 13
Dependent Claim
26 words
The apparatus of claim 1 , wherein said elongated insertion tool is additionally removably connected to a syringe for injecting said fluid into sad tool passageway.
Claim 14
Dependent Claim
13 words
The apparatus of claim 1 , wherein said shield is composed of polypropylene.
Claim 15
Dependent Claim
174 words
Apparatus for plugging a channel within a bone to stop the flow of bone cement through said channel, wherein said apparatus comprises: a bone plug insertable within said channel, wherein said bone plug includes a core, an inflatable structure extending as a sleeve over said core, being fastened to said core at proximal and distal ends of said inflatable structure, and a valve admitting a fluid into said inflatable structure and preventing a flow of said fluid from said inflatable structure, wherein said core includes a core passageway for said fluid injected into said inflatable structure, wherein said valve extends as a sleeve over said core passageway within said inflatable structure, blocking movement of said fluid from said inflatable structure into said core passageway, and wherein said fluid flows through said sleeve and out an end of said sleeve into said inflatable structure from said core passageway; and an elongated insertion tool removably connected to said core, wherein said elongated insertion tool includes a tool passageway for said fluid injected into said core passageway.
Claim 16
Dependent Claim
174 words
Apparatus for plugging a channel within a bone to stop the flow of bone cement through said channel, wherein said apparatus comprises: a bone plug insertable within said channel, wherein said bone plug includes a core, an inflatable structure extending as a sleeve over said core, being fastened to said core at proximal and distal ends of said inflatable structure, and a valve admitting a fluid into said inflatable structure and preventing a flow of said fluid from said inflatable structure, wherein said core includes a core passageway for said fluid injected into said inflatable structure, wherein said valve extends as a sleeve over said core passageway within said inflatable structure, blocking movement of said fluid from said inflatable structure into said core passageway, and wherein said fluid flows through said sleeve and out an end of said sleeve into said inflatable structure from said core passageway; and an elongated insertion tool removably connected to said core, wherein said elongated insertion tool includes a tool passageway for said fluid injected into said core passageway.
Claim 17
Dependent Claim
38 words
The apparatus of claim 14 , wherein a distal portion of said core extend past said distal end of said inflatable structure, and said bone plug additionally includes a shield extending outwardly around and along said inflatable structure.
Claim 18
Dependent Claim
30 words
The apparatus of claim 15 , wherein said shield includes a distal portion fastened to said distal portion of said core and a flexible portion extending over said inflatable structure.
Claim 19
Dependent Claim
14 words
The apparatus of claim 16 , wherein said flexible portion includes a pleated shape.
Claim 20
Dependent Claim
41 words
The apparatus of claim 17 , wherein said flexible portion includes a first conical portion extending from said distal portion of said shield, with an enlarged end of said first conical portion at a proximal end of said first conical portion.
Claim 21
Dependent Claim
19 words
The apparatus of claim 18 , wherein said flexible portion extends around an entire length of said inflatable structure.
Claim 22
Dependent Claim
35 words
The apparatus of claim 18 , wherein said flexible portion additionally includes a second conical portion with an enlarged end of said second conical portion extending from said enlarged end of said first conical 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) | 2006-01-13 | 2006-07-15 | 2007-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-01-13 | 2010-07-15 | 2011-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-01-13 | 2014-07-15 | 2015-01-14 | $7700.00 | Window Closed / Lapsed |