US7588574B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Kits for enabling axial access and procedures in the spine
Assignee: Mis IP Holdings LLC
•
Filing: 2004-10-22
•
Granted: 2009-09-15
•
Expires: 2024-10-22
Abstract
Abstract Disclosed are surgical tools, tool sets and methods for percutaneously accessing and preparing treatment sites within the spine for subsequent treatment procedures. The treatment site may be an inter-vertebral motion segments in the lumbar and sacral regions of the spine. The tool set may comprise introducer tools and bone dilators for accessing and tapping into a targeted site, such as, for example, the anterior surface of the S1 vertebral body. The tool set may also comprise cutters and extractors for preparing the treatment site for subsequent treatment procedures. The tool set may additionally comprise a bone graft inserter, an exchange system, and/or a temporary distraction tool for further preparing the treatment site for subsequent treatment procedures.
Inventors
- 👤 Robert L. Assell
- 👤 Stephen D. Ainsworth
- 👤 Andrew H. Cragg
- 👤 Eugene A. Dickhudt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:38
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/70; A61B17/7074; A61B17/02; A61B17/025; A61B17/88; A61B17/16; A61B17/1604; A61B17/1662; A61B17/1671; A61B17/1697; A61B17/17; A61B17/1739; A61B17/1757; A61B17/22; A61B17/84; A61B17/86; A61B17/8605; A61B17/861; A61B17/8615; A61B17/8875; A61B17/8877; A61B17/888; A61B17/8886; A61B17/8888; A61B17/92; A61B17/0218; A61B17/1613; A61B17/1615; A61B17/8897; A61B17/00234; A61B2017/00238; A61B2017/00261; A61B2017/0046; A61B2017/00469; A61B2017/0256; A61B2017/22038; A61B2017/22042; A61B2017/22044; A61B17/34; A61B17/3417; A61B17/3421; A61B2017/3445; A61B2017/922
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
239 words
A spinal fusion kit, comprising: an access tool, for providing access to a disc space; a tissue extraction tool, for removing disrupted material from the disc space; and a cutter assembly, for disrupting material in the disc space, the cutter assembly comprising: a shaft extending along a longitudinal axis between a shaft proximal end and, a shaft distal end; a handle extending proximate the shaft proximal end; and a blade comprising a flat ribbon member having a first end and a second end, the flat ribbon member having a first surface and a second surface extending between the first end and the second end, the first surface and the second surface joined by at least one cutter edge extending between the first end and the second end, the flat ribbon member forming a bend placing the first end the second end within proximity of each other, the bend exposing the first surface as an exterior surface of the blade and folding the second surface in toward itself as an interior surface of the blade, the blade actuatable between an extended configuration and a retracted configuration by the relative movement between the first end and the second end, wherein the extended configuration comprises the bend extending radially outwardly at approximately a 90 degree angle from the longitudinal axis of the shaft, wherein the retracted configuration comprises the bend extending axially distally roughly parallel to the longitudinal axis of the shaft.
Claim 2
Dependent Claim
239 words
A spinal fusion kit, comprising: an access tool, for providing access to a disc space; a tissue extraction tool, for removing disrupted material from the disc space; and a cutter assembly, for disrupting material in the disc space, the cutter assembly comprising: a shaft extending along a longitudinal axis between a shaft proximal end and, a shaft distal end; a handle extending proximate the shaft proximal end; and a blade comprising a flat ribbon member having a first end and a second end, the flat ribbon member having a first surface and a second surface extending between the first end and the second end, the first surface and the second surface joined by at least one cutter edge extending between the first end and the second end, the flat ribbon member forming a bend placing the first end the second end within proximity of each other, the bend exposing the first surface as an exterior surface of the blade and folding the second surface in toward itself as an interior surface of the blade, the blade actuatable between an extended configuration and a retracted configuration by the relative movement between the first end and the second end, wherein the extended configuration comprises the bend extending radially outwardly at approximately a 90 degree angle from the longitudinal axis of the shaft, wherein the retracted configuration comprises the bend extending axially distally roughly parallel to the longitudinal axis of the shaft.
Claim 3
Dependent Claim
16 words
A spinal fusion kit as in claim 1 , further comprising a bone growth material inserter.
Claim 4
Dependent Claim
15 words
A spinal fusion kit as in claim 1 , further comprising a bone paste inserter.
Claim 5
Dependent Claim
19 words
The spinal fusion kit of claim 1 wherein the cutter assembly comprises at least one single-sided cutter blade arm.
Claim 6
Dependent Claim
19 words
The spinal fusion kit of claim 1 wherein the cutter assembly comprises at least one double-sided cutter blade arm.
Claim 7
Dependent Claim
14 words
The spinal fusion kit of claim 1 wherein the blade comprises a teardrop shape.
Claim 8
Dependent Claim
37 words
The spinal fusion kit of claim 1 wherein the distal segment comprises a first attachment structure secured proximate the shaft distal end and the proximal segment comprises a second attachment structure secured proximate the shaft distal end.
Claim 9
Dependent Claim
34 words
The spinal fusion kit of claim 7 wherein one of the first and the second attachment structures comprises a slot and the other of the first and the second attachment structures comprises a hole.
Claim 10
Dependent Claim
27 words
The spinal fusion kit of claim 7 wherein the first attachment structure and the second attachment structure are secured to the shaft distal end with a pin.
Claim 11
Dependent Claim
31 words
The spinal fusion kit of claim 1 wherein axial movement of the handle along a longitudinal axis of the shaft actuates the blade between the extended configuration and a retracted configuration.
Claim 12
Dependent Claim
13 words
The spinal fusion kit of claim 1 wherein the blade comprises a down-cutter.
Claim 13
Dependent Claim
13 words
The spinal fusion kit of claim 1 wherein the blade comprises a debulker.
Claim 14
Dependent Claim
21 words
The spinal fusion kit of claim 1 wherein the cutter assembly further comprises a shaft slot dimensioned to accommodate the blade.
Claim 15
Dependent Claim
30 words
The spinal fusion kit of claim 1 wherein the cutter assembly further comprises a shaft slot dimensioned to accommodate at least a portion of the proximal segment of the blade.
Claim 16
Dependent Claim
15 words
The spinal fusion kit of claim 1 wherein the blade comprises a shape memory alloy.
Claim 17
Dependent Claim
27 words
The spinal fusion kit of claim 1 further comprising a fusion rod, for spanning the disc space and enabling fusion of adjacent vertebral bodies across the space.
Claim 18
Dependent Claim
19 words
The spinal fusion kit of claim 1 , wherein the exterior surface at the bend provides a blunt surface.
References Cited (Backward Citations)
US1388547A
Cited
US1442051A
Cited
US1630239A
Cited
US2336338A
Cited
US3367326A
Cited
US3454006A
Cited
US3554192A
Cited
US3788320A
Cited
US3892232A
Cited
US3875595A
Cited
US4046144A
Cited
US4135506A
Cited
US4175555A
Cited
US4265231A
Cited
US4349921A
Cited
US4309777A
Cited
US4518383A
Cited
US4545374A
Cited
US4541423A
Cited
US4609370A
Cited
US4573448A
Cited
USRE33258E
Cited
US4657550A
Cited
US4636217A
Cited
US4650466A
Cited
US4756649A
Cited
US5002546A
Cited
US4904260A
Cited
US5147404A
Cited
US4844088A
Cited
USRE36857E
Cited
US4862891A
Cited
US4858601A
Cited
US6264656B1
Cited
US6096038A
Cited
US6210412B1
Cited
US5741253A
Cited
US5484437A
Cited
US5505732A
Cited
US6270498B1
Cited
US6447547B1
Cited
US4966604A
Cited
US4969888A
Cited
US5131382A
Cited
US5015255A
Cited
US5059193A
Cited
US5030201A
Cited
US5195968A
Cited
US5171280A
Cited
US5269785A
Cited
US5231910A
Cited
US5242461A
Cited
US5242443A
Cited
US5584887A
Cited
US5545228A
Cited
US5480440A
Cited
US5285795A
Cited
US5313962A
Cited
US5395317A
Cited
US5762629A
Cited
US5242444A
Cited
US5366457A
Cited
US6500173B2
Cited
US5171279A
Cited
US5357983A
Cited
US5496322A
Cited
US5569248A
Cited
US6793656B1
Cited
US5728097A
Cited
US5396880A
Cited
US5246458A
Cited
US5383884A
Cited
US5700291A
Cited
EP0611116B1
Cited
US5403276A
Cited
US5902279A
Cited
US5702454A
Cited
US5785709A
Cited
US5445140A
Cited
US6436098B1
Cited
US5496338A
Cited
US5376094A
Cited
US5733284A
Cited
US5433739A
Cited
US5514137A
Cited
US5558674A
Cited
US5395188A
Cited
US5535756A
Cited
US6066154A
Cited
WO1995022285A1
Cited
US6093207A
Cited
US5437661A
Cited
US5888220A
Cited
US6443988B2
Cited
US6140452A
Cited
US20020156531A1
Cited
US20030195628A1
Cited
US20030220649A1
Cited
US6306177B1
Cited
US5549679A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2012-09-14 | 2013-03-16 | 2013-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2016-09-14 | 2017-03-16 | 2017-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2020-09-14 | 2021-03-16 | 2021-09-15 | $7700.00 | Window Closed / Lapsed |