US6875219B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bone access system
Assignee: Neurotherm LLC
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Filing: 2003-02-14
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Granted: 2005-04-05
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Expires: 2023-02-14
Abstract
Abstract Instruments and methodology for nonlinear access to bone tissue sites are described. Embodiments disclosed include a conduit for delivering material or a medical device to a site and a core member that is able to steer the conduit and allow the combination to be advanced thorough cancellous bone. A cannula and stylet may be provided to first advance through hard bone. The core member includes a curved tip that may be straightened by the cannula or an actuator sheath to vary sweep of the curve. An obturator may be included in the system. This instrument may include a flexible portion as well. Each of the obturator and conduit may be provided with any of a variety of active tips. The systems may be used to perform hard tissue site implantation, for example, in connection with a high pressure injection system.
Inventors
- 👤 Yves P. Arramon
- 👤 Scott H. McIntyre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:29
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/88; A61B17/8802; A61B17/8805; A61B17/8811; A61B17/34; A61B17/3417; A61B17/3468; A61B17/3472; A61B17/8819; A61B10/00; A61B10/02; A61B10/0233; A61B10/025; A61B10/06; A61B17/8875; A61B17/00234; A61B2017/00238; A61B2017/00261; A61B2017/00292; A61B2017/003; A61B2017/00831; A61B2017/00867; A61B17/32; A61B17/320016; A61B17/32002; A61B2017/320032
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
108 words
A bone access system comprising: a cannula, said cannula adapted for driving through compact bone tissue, a flexible conduit, said conduit adapted to be slidably received within said cannula, and a core wire, said core wire adapted to be slidably received within said flexible conduit and including a distal portion having a pre-formed curve, wherein, together, said core wire and said flexible conduit are adapted to be advanced from a distal end of said cannula to form a curved path and an actuator sheath provided between said core wire and said flexible conduit, said actuator sheath configured to selectively straighten said pre-formed curve upon advancement over the same.
Claim 2
Dependent Claim
108 words
A bone access system comprising: a cannula, said cannula adapted for driving through compact bone tissue, a flexible conduit, said conduit adapted to be slidably received within said cannula, and a core wire, said core wire adapted to be slidably received within said flexible conduit and including a distal portion having a pre-formed curve, wherein, together, said core wire and said flexible conduit are adapted to be advanced from a distal end of said cannula to form a curved path and an actuator sheath provided between said core wire and said flexible conduit, said actuator sheath configured to selectively straighten said pre-formed curve upon advancement over the same.
Claim 3
Dependent Claim
27 words
The system of claim 1 , wherein said conduit is adapted to deliver hard tissue implant material to a site upon removal of said core wire therefrom.
Claim 4
Dependent Claim
20 words
The system of claim 1 , further comprising a stylet having a head adapted for passing through compact bone tissue.
Claim 5
Dependent Claim
41 words
The system of claim 1 , further comprising a slotted housing and a handle slidably received within said housing, wherein said handle is attached to said actuator sheath and said core wire is attached to said housing proximal to said handle.
Claim 6
Dependent Claim
19 words
The system of claim 1 , further comprising an obturator positioned over said actuator sheath and inside said conduit.
Claim 7
Dependent Claim
14 words
The system of claim 5 , wherein said obturator is affixed to said handle.
Claim 8
Dependent Claim
18 words
The system of claim 5 , wherein said obturator comprises rigid section and a flexible distal end portion.
Claim 9
Dependent Claim
24 words
The system of claim 7 , wherein said obturator end portion comprises a plurality of links, wherein said links are adapted to be drivable.
Claim 10
Dependent Claim
30 words
The system of claim 8 , wherein said obturator end portion further comprising an active distal tip including a member selected from a group consisting of drivers, cutters and twisters.
Claim 11
Dependent Claim
17 words
The system of claim 9 , wherein a proximal end of said obturator includes a drive interface.
Claim 12
Dependent Claim
28 words
The system of claim 1 , wherein said conduit further comprises an active distal tip selected from a group consisting of serrated, radio-marked, perforated infusion and snipper tips.
Claim 13
Dependent Claim
10 words
The system of claim 1 , sized to effect vertebroplasty.
Claim 14
Dependent Claim
21 words
The system of claim 1 , further comprising a high pressure applicator for delivering hard tissue implant material through said conduit.
Claim 15
Dependent Claim
22 words
The system of claim 1 , wherein radial extension of said conduit from said cannula up to about 50 mm is possible.
Claim 16
Dependent Claim
22 words
The system of claim 1 , wherein longitudinal extension of said conduit from said canula up to about 100 mm is possible.
Claim 17
Independent Claim
77 words
A method of bone access comprising: advancing a cannula through bone tissue in a substantially straight path; and advancing a steerable member inserted in said cannula through bone tissue in a path that extends radially from an axis of said cannula, wherein said steerable member comprises a flexible conduit and a core wire having a preformed curve, said core wire adapted to direct said conduit in said radially-extending path upon release from a substantially straight, constrained state.
Claim 18
Independent Claim
77 words
A method of bone access comprising: advancing a cannula through bone tissue in a substantially straight path; and advancing a steerable member inserted in said cannula through bone tissue in a path that extends radially from an axis of said cannula, wherein said steerable member comprises a flexible conduit and a core wire having a preformed curve, said core wire adapted to direct said conduit in said radially-extending path upon release from a substantially straight, constrained state.
Claim 19
Dependent Claim
25 words
The method of claim 16 , accomplished with a system as described in any one of claims 2 , 3 and 4 ∝ 13 .
References Cited (Backward Citations)
US4969888A
Cited
US5108404A
Cited
US5304141A
Cited
US6248110B1
Cited
US5830188A
Cited
US6280458B1
Cited
US6019776A
Cited
US6033411A
Cited
US6425887B1
Cited
US6595958B1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2008-04-04 | 2008-10-04 | 2009-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2012-04-04 | 2012-10-04 | 2013-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2016-04-04 | 2016-10-04 | 2017-04-05 | $7700.00 | Window Closed / Lapsed |