US20080154275A1
Active / In Force
US
⏱️ 1.4 years remaining
Methods of use of an exchange system for soft tissue access pathway
Assignee: Trans1 Inc
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Filing: 2008-03-11
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Granted: —
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Expires: 2028-03-11
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 05:16
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/88; A61B17/68; A61B17/70; A61B17/7074; A61B17/02; A61B17/025; 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: 11
Claim 1
Independent Claim
75 words
1 . A method of advancing a device along an access tract, comprising the steps of: positioning a dilator sheath between an access site and a target site on a bone; advancing a tubular exchange bushing over the dilator sheath; advancing a tubular exchange cannula over the exchange bushing; removing the dilator sheath and the exchange bushing, leaving the exchange cannula in position along the access tract; and introducing the device through the exchange cannula.
Claim 2
Dependent Claim
75 words
1 . A method of advancing a device along an access tract, comprising the steps of: positioning a dilator sheath between an access site and a target site on a bone; advancing a tubular exchange bushing over the dilator sheath; advancing a tubular exchange cannula over the exchange bushing; removing the dilator sheath and the exchange bushing, leaving the exchange cannula in position along the access tract; and introducing the device through the exchange cannula.
Claim 3
Dependent Claim
15 words
2 . A method as in claim 1 , wherein the device is an implant.
Claim 4
Dependent Claim
17 words
3 . A method as in claim 1 , wherein the device is a spinal fusion implant.
Claim 5
Dependent Claim
18 words
4 . A method as in claim 1 , wherein the device is a spinal motion preservation implant.
Claim 6
Dependent Claim
17 words
5 . A method as in claim 1 , wherein the device is a site preparation tool.
Claim 7
Dependent Claim
30 words
6 . A method as in claim 1 , wherein the device has a cross sectional area that is greater than the inside cross sectional area of the dilator sheath.
Claim 8
Dependent Claim
17 words
7 . A method as in claim 1 , wherein the target site is on the sacrum.
Claim 9
Dependent Claim
28 words
8 . A method as in claim 1 , wherein the introducing the device step comprises enlarging the diameter of at least a portion of the exchange cannula.
Claim 10
Dependent Claim
20 words
9 . A method as in claim 8 , comprising radially enlarging a distal tapered portion of the exchange cannula.
Claim 11
Dependent Claim
55 words
10 . A method as in claim 1 , wherein the access tract has a longitudinal axis which intersects the surface of the bone at an angle, and the distal end of the exchange cannula is beveled at an angle that corresponds to the angle at which the axis intersects the surface of the bone.
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