US20080097452A1
Active / In Force
US
⏱️ 1.1 years remaining
Method and apparatus for spinal distraction
Assignee: Trans1 Inc
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Filing: 2007-12-10
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Granted: —
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Expires: 2027-12-10
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 23:06
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: 32
Claim 1
Independent Claim
75 words
1 . A distraction device, comprising: an elongate body, having at least a proximal component releasably connected to a distal component; a proximal thread on the proximal component, having a first pitch and a first major diameter; a distal thread on the distal component, having a second pitch and a second major diameter; wherein the first pitch is different than the second pitch and the first major diameter is greater than the second major diameter.
Claim 2
Dependent Claim
75 words
1 . A distraction device, comprising: an elongate body, having at least a proximal component releasably connected to a distal component; a proximal thread on the proximal component, having a first pitch and a first major diameter; a distal thread on the distal component, having a second pitch and a second major diameter; wherein the first pitch is different than the second pitch and the first major diameter is greater than the second major diameter.
Claim 3
Dependent Claim
28 words
2 . A distraction device as in claim 1 , wherein the first major diameter is within the range of from about 10 mm to about 15 mm.
Claim 4
Dependent Claim
26 words
3 . A distraction device as in claim 2 , wherein the second major diameter is no greater than about 98% of the first major diameter.
Claim 5
Dependent Claim
29 words
4 . A distraction device as in claim 1 , wherein the elongate body has a length within the range of from about 1.25 inches to about 2.25 inches.
Claim 6
Dependent Claim
36 words
5 . A distraction device as in claim 1 , wherein each of the proximal thread and the distal thread has an axial length within the range of from about 0.5 inches to about 1.25 inches.
Claim 7
Dependent Claim
24 words
6 . A distraction device as in claim 1 , further comprising complementary threaded surfaces in between the proximal component and the distal component.
Claim 8
Dependent Claim
17 words
7 . A distraction device as in claim 1 , wherein the elongate body comprises stainless steel.
Claim 9
Dependent Claim
16 words
8 . A distraction device as in claim 1 , wherein the elongate body comprises titanium.
Claim 10
Dependent Claim
32 words
9 . A distraction device as in claim 1 , wherein each of the proximal thread and the distal thread extends counterclockwise around the body, viewed in a proximal to distal direction.
Claim 11
Dependent Claim
32 words
10 . A distraction device as in claim 1 , wherein each of the proximal thread and the distal thread extends clockwise around the body, viewed in a proximal to distal direction.
Claim 12
Dependent Claim
23 words
11 . A distraction device as in claim 1 , wherein each of the proximal thread and the distal thread are self tapping.
Claim 13
Dependent Claim
28 words
12 . A distraction device as in claim 2 , wherein the first major diameter is within the range of from about 12 mm to about 13 mm.
Claim 14
Dependent Claim
19 words
13 . A distraction device as in claim 1 , wherein the second major diameter is about 9 mm.
Claim 15
Dependent Claim
20 words
14 . A distraction device as in claim 1 , wherein the second pitch is less than the first pitch.
Claim 16
Dependent Claim
28 words
15 . A distraction device as in claim 1 , wherein the first pitch is within the range of from about 10 to about 15 turns per inch.
Claim 17
Dependent Claim
28 words
16 . A distraction device as in claim 1 , wherein the second pitch is within the range of from about 10 to about 20 turns per inch.
Claim 18
Dependent Claim
23 words
17 . A distraction device as in claim 1 , wherein the second pitch is at least about 105% of the first pitch.
Claim 19
Dependent Claim
23 words
18 . A distraction device as in claim 1 , wherein the second pitch is at least about 110% of the first pitch.
Claim 20
Dependent Claim
23 words
19 . A distraction device as in claim 1 , wherein the second pitch is at least about 125% of the first pitch.
Claim 21
Dependent Claim
22 words
20 . A distraction device as in claim 1 , further comprising a releasable coupling, for releasably engaging a rotatable driver tool.
Claim 22
Dependent Claim
67 words
21 . A temporary distraction device, comprising: an elongate body, having at least a proximal component and a distal component; a proximal bone engaging thread on the proximal component; a distal bone engaging thread on the distal component, axially separated from the proximal bone engaging thread; and a rotatable driver; wherein rotating the rotatable driver changes the axial separation between the proximal and distal bone engaging threads.
Claim 23
Dependent Claim
67 words
21 . A temporary distraction device, comprising: an elongate body, having at least a proximal component and a distal component; a proximal bone engaging thread on the proximal component; a distal bone engaging thread on the distal component, axially separated from the proximal bone engaging thread; and a rotatable driver; wherein rotating the rotatable driver changes the axial separation between the proximal and distal bone engaging threads.
Claim 24
Dependent Claim
30 words
22 . A temporary distraction device as in claim 21 , wherein the elongate body has a length within the range of from about 1.25 inches to about 2.25 inches.
Claim 25
Dependent Claim
37 words
23 . A temporary distraction device as in claim 21 , wherein each of the proximal thread and the distal thread has an axial length within the range of from about 0.5 inches to about 1.25 inches.
Claim 26
Dependent Claim
25 words
24 . A temporary distraction device as in claim 21 , further comprising complementary threaded surfaces in between the proximal component and the distal component.
Claim 27
Dependent Claim
18 words
25 . A temporary distraction device as in claim 21 , wherein the elongate body comprises stainless steel.
Claim 28
Dependent Claim
17 words
26 . A temporary distraction device as in claim 21 , wherein the elongate body comprises titanium.
Claim 29
Dependent Claim
33 words
27 . A temporary distraction device as in claim 21 , wherein each of the proximal thread and the distal thread extends counterclockwise around the body, viewed in a proximal to distal direction.
Claim 30
Dependent Claim
33 words
28 . A temporary distraction device as in claim 21 , wherein each of the proximal thread and the distal thread extends clockwise around the body, viewed in a proximal to distal direction.
Claim 31
Dependent Claim
24 words
29 . A temporary distraction device as in claim 21 , wherein each of the proximal thread and the distal thread are self tapping.
Claim 32
Dependent Claim
22 words
30 . A temporary distraction device as in claim 21 , further comprising a releasable coupling, for releasably engaging the rotatable driver.
References Cited (Backward Citations)
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