US20050137601A1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spinal nucleus extraction tool
Assignee: Mis IP Holdings LLC
•
Filing: 2004-10-22
•
Granted: —
•
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 Assell
- 👤 Stephen Ainsworth
- 👤 Andrew Cragg
- 👤 Eugene Dickhudt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:11
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/70; A61B17/7074; A61B17/88; 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: 38
Claim 1
Independent Claim
63 words
1 . A spinal nucleus tissue extraction tool, adapted for insertion along an axially extending access lumen through at least one vertebral body to reach a target disc space, comprising: an elongate tubular sheath; an elongate shaft, having a proximal end and a distal end, axially movably positionable within the sheath; and a tissue extraction head on the distal end of the shaft.
Claim 2
Dependent Claim
63 words
1 . A spinal nucleus tissue extraction tool, adapted for insertion along an axially extending access lumen through at least one vertebral body to reach a target disc space, comprising: an elongate tubular sheath; an elongate shaft, having a proximal end and a distal end, axially movably positionable within the sheath; and a tissue extraction head on the distal end of the shaft.
Claim 3
Dependent Claim
23 words
2 . A spinal nucleus tissue extraction tool as in claim 1 , wherein the tissue extraction head comprises a plurality of filaments.
Claim 4
Dependent Claim
24 words
3 . A spinal nucleus tissue extraction tool as in claim 2 , wherein the tissue extraction head comprises at least two nonlinear filaments.
Claim 5
Dependent Claim
24 words
4 . A spinal nucleus tissue extraction tool as in claim 2 , wherein the tissue extraction head comprises a plurality of kinky wires.
Claim 6
Dependent Claim
23 words
5 . A spinal nucleus tissue extraction tool as in claim 2 , wherein the tissue extraction head comprises an unraveled wire coil.
Claim 7
Dependent Claim
19 words
6 . A spinal nucleus tissue extraction tool as in claim 2 , comprising at least about 10 filaments.
Claim 8
Dependent Claim
19 words
7 . A spinal nucleus tissue extraction tool as in claim 2 , comprising at least about 20 filaments.
Claim 9
Dependent Claim
48 words
8 . A spinal nucleus tissue extraction tool as in claim 1 , wherein the extraction head is axially movable between a first position in which it is retracted within the sheath and a second position in which it is exposed beyond the distal end of the sheath.
Claim 10
Dependent Claim
97 words
9 . A tissue removal tool, comprising: an elongate tubular sheath, having a proximal end and a distal end; an elongate shaft axially moveably positioned within the sheath; a plurality of kinked filaments carried by the distal end of the shaft; wherein the filaments are moveable between a first, reduced cross sectional profile when the shaft is proximally retracted to position the filaments within the tubular sheath, and a second, expanded cross sectional profile when the shaft is axially distally advanced with respect to the sheath, to expose the filaments beyond the distal end of the sheath.
Claim 11
Dependent Claim
97 words
9 . A tissue removal tool, comprising: an elongate tubular sheath, having a proximal end and a distal end; an elongate shaft axially moveably positioned within the sheath; a plurality of kinked filaments carried by the distal end of the shaft; wherein the filaments are moveable between a first, reduced cross sectional profile when the shaft is proximally retracted to position the filaments within the tubular sheath, and a second, expanded cross sectional profile when the shaft is axially distally advanced with respect to the sheath, to expose the filaments beyond the distal end of the sheath.
Claim 12
Dependent Claim
32 words
10 . A tissue removal tool as in claim 9 , wherein the filaments are substantially parallel to the longitudinal axis of the sheath when the filaments are in the first profile.
Claim 13
Dependent Claim
25 words
11 . A tissue removal tool as in claim 9 , wherein the filaments are randomly organized when the shaft is in the second profile.
Claim 14
Dependent Claim
16 words
12 . A tissue removal tool as in claim 9 , comprising at least ten filaments.
Claim 15
Dependent Claim
23 words
13 . A tissue removal tool as in claim 9 , comprising within the range of from about 5 to about 40 filaments.
Claim 16
Dependent Claim
19 words
14 . A tissue removal tool as in claim 9 , wherein the filaments comprise a nickel titanium alloy.
Claim 17
Dependent Claim
17 words
15 . A tissue removal tool as in claim 9 , wherein the filaments comprise stainless steel.
Claim 18
Dependent Claim
24 words
16 . A tissue removal tool as in claim 9 , wherein each filament has a diameter of no greater than about 0.05 inches.
Claim 19
Dependent Claim
24 words
17 . A tissue removal tool as in claim 9 , wherein each filament has a diameter of no greater than about 0.02 inches.
Claim 20
Dependent Claim
38 words
18 . A tissue removal tool as in claim 9 , wherein the plurality of filaments define a cross sectional dimension within the range of from about 0.25 inches to about 0.75 inches when in the second profile.
Claim 21
Dependent Claim
22 words
19 . A tissue removal tool as in claim 9 , further comprising a handle on the proximal end of the shaft.
Claim 22
Dependent Claim
36 words
20 . A tissue removal tool as in claim 9 , wherein the filaments have a proximal end and a distal end, and at least one filament is provided with a hook on the distal end.
Claim 23
Dependent Claim
68 words
21 . A spinal tissue extraction tool, adapted for insertion into a target disc space, comprising: an elongate tubular sheath; an elongate shaft, having a proximal end and a distal end, movably positionable within the sheath; and a tissue extraction head on the distal end of the shaft; wherein the extraction head comprises a plurality of nonparallel filaments for engaging and removing tissue from the target disc space.
Claim 24
Dependent Claim
68 words
21 . A spinal tissue extraction tool, adapted for insertion into a target disc space, comprising: an elongate tubular sheath; an elongate shaft, having a proximal end and a distal end, movably positionable within the sheath; and a tissue extraction head on the distal end of the shaft; wherein the extraction head comprises a plurality of nonparallel filaments for engaging and removing tissue from the target disc space.
Claim 25
Dependent Claim
21 words
22 . A spinal tissue extraction tool as in claim 21 , wherein the extraction head comprises a plurality of wires.
Claim 26
Dependent Claim
21 words
23 . A spinal tissue extraction tool as in claim 21 , wherein the extraction head comprises an unraveled wire coil.
Claim 27
Dependent Claim
22 words
24 . A spinal tissue extraction tool as in claim 21 , wherein the extraction head comprises at least about 10 filaments.
Claim 28
Dependent Claim
22 words
25 . A spinal tissue extraction tool as in claim 21 , wherein the extraction head comprises at least about 20 filaments.
Claim 29
Dependent Claim
18 words
26 . A spinal tissue extraction tool as in claim 21 , wherein the filaments are randomly arranged.
Claim 30
Dependent Claim
24 words
27 . A spinal tissue extraction tool as in claim 21 , comprising within the range of from about 5 to about 40 filaments.
Claim 31
Dependent Claim
20 words
28 . A spinal tissue extraction tool as in claim 21 , wherein the filaments comprise a nickel titanium alloy.
Claim 32
Dependent Claim
18 words
29 . A spinal tissue extraction tool as in claim 21 , wherein the filaments comprise stainless steel.
Claim 33
Dependent Claim
25 words
30 . A spinal tissue extraction tool as in claim 21 , wherein each filament has a diameter of no greater than about 0.05 inches.
Claim 34
Dependent Claim
25 words
31 . A spinal tissue extraction tool as in claim 21 , wherein each filament has a diameter of no greater than about 0.02 inches.
Claim 35
Dependent Claim
37 words
32 . A spinal tissue extraction tool as in claim 21 , wherein the filaments define a cross sectional dimension within the range of from about 0.25 inches to about 0.75 inches when in the second profile.
Claim 36
Dependent Claim
23 words
33 . A spinal tissue extraction tool as in claim 21 , further comprising a handle on the proximal end of the shaft.
Claim 37
Dependent Claim
37 words
34 . A spinal tissue extraction tool as in claim 21 , wherein the filaments have a proximal end and a distal end, and at least one filament is provided with a hook on the distal end.
Claim 38
Dependent Claim
26 words
35 . A tissue removal tool as in claim 9 , wherein the tool is dimensioned to be introduced into and used in an intervertebral space.
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