Patent US2543212A successfully refreshed from Google Patents.
Patent DE1648905A1 successfully refreshed from Google Patents.
US20050137602A1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for spinal distraction
Assignee: Mis IP Holdings LLC
•
Filing: 2004-10-22
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Granted: —
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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
2026-10-23 01:50
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/02; A61B17/025; A61B17/56; A61B17/58; A61B17/88; A61B17/68; A61B17/70; A61B17/7074; 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: 43
Claim 1
Independent Claim
69 words
1 . A method of treating the spine, comprising the steps of: identifying a site on the anterior surface of the sacrum; forming a lumen from the site into the sacrum, through a first vertebral body and into a second vertebral body; introducing a temporary distraction device into the lumen; increasing the distance between the first and second vertebral body; and removing the temporary distraction device from the lumen.
Claim 2
Dependent Claim
69 words
1 . A method of treating the spine, comprising the steps of: identifying a site on the anterior surface of the sacrum; forming a lumen from the site into the sacrum, through a first vertebral body and into a second vertebral body; introducing a temporary distraction device into the lumen; increasing the distance between the first and second vertebral body; and removing the temporary distraction device from the lumen.
Claim 3
Dependent Claim
46 words
2 . A method of treating the spine as in claim 1 , additionally comprising engaging a proximal component of the distraction device with respect to the first vertebral body and engaging a distal component of the distraction device with respect to the second vertebral body.
Claim 4
Dependent Claim
23 words
3 . A method of treating the spine as in claim 2 , wherein the proximal and distal components are releasably connected together.
Claim 5
Dependent Claim
25 words
4 . A method of treating the spine as in claim 1 , wherein the lumen extends at least as far as the L5 vertebrae.
Claim 6
Dependent Claim
18 words
5 . A method of treating the spine as in claim 4 , wherein the lumen is linear.
Claim 7
Dependent Claim
19 words
6 . A method of treating the spine as in claim 1 , wherein the forming step comprises drilling.
Claim 8
Dependent Claim
35 words
7 . A method of treating the spine as in claim 1 , wherein the method additionally comprises removing at least a part of a disc from between the first and the second vertebral bodies.
Claim 9
Dependent Claim
31 words
8 . A method of treating the spine as in claim 1 , wherein the method additionally comprises removing an entire nucleus from between the first and the second vertebral bodies.
Claim 10
Dependent Claim
93 words
9 . A method of increasing the distance between a first vertebral body and a second vertebral body, comprising the steps of: providing an internal distraction device having an elongate body, a first threaded surface on a proximal portion of the body and a second threaded surface on a distal portion of the body; engaging the first threaded surface with the first vertebral body, and the second threaded surface with the second vertebral body; and rotating the distraction device to increase the distance between the first vertebral body and the second vertebral body.
Claim 11
Dependent Claim
93 words
9 . A method of increasing the distance between a first vertebral body and a second vertebral body, comprising the steps of: providing an internal distraction device having an elongate body, a first threaded surface on a proximal portion of the body and a second threaded surface on a distal portion of the body; engaging the first threaded surface with the first vertebral body, and the second threaded surface with the second vertebral body; and rotating the distraction device to increase the distance between the first vertebral body and the second vertebral body.
Claim 12
Dependent Claim
75 words
10 . 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 13
Dependent Claim
75 words
10 . 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 14
Dependent Claim
28 words
11 . A distraction device as in claim 10 , wherein the first major diameter is within the range of from about 10 mm to about 15 mm.
Claim 15
Dependent Claim
26 words
12 . A distraction device as in claim 11 , wherein the second major diameter is no greater than about 98% of the first major diameter.
Claim 16
Dependent Claim
29 words
13 . A distraction device as in claim 10 , wherein the elongate body has a length within the range of from about 1.25 inches to about 2.25 inches.
Claim 17
Dependent Claim
36 words
14 . A distraction device as in claim 10 , 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 18
Dependent Claim
24 words
15 . A distraction device as in claim 10 , further comprising complementary threaded surfaces in between the proximal component and the distal component.
Claim 19
Dependent Claim
17 words
16 . A distraction device as in claim 10 , wherein the elongate body comprises stainless steel.
Claim 20
Dependent Claim
16 words
17 . A distraction device as in claim 10 , wherein the elongate body comprises titanium.
Claim 21
Dependent Claim
32 words
18 . A distraction device as in claim 10 , wherein each of the proximal thread and the distal thread extends counterclockwise around the body, viewed in a proximal to distal direction.
Claim 22
Dependent Claim
32 words
19 . A distraction device as in claim 10 , wherein each of the proximal thread and the distal thread extends clockwise around the body, viewed in a proximal to distal direction.
Claim 23
Dependent Claim
23 words
20 . A distraction device as in claim 10 , wherein each of the proximal thread and the distal thread are self tapping.
Claim 24
Dependent Claim
28 words
21 . A distraction device as in claim 11 , wherein the first major diameter is within the range of from about 12 mm to about 13 mm.
Claim 25
Dependent Claim
19 words
22 . A distraction device as in claim 10 , wherein the second major diameter is about 9 mm.
Claim 26
Dependent Claim
20 words
23 . A distraction device as in claim 10 , wherein the second pitch is less than the first pitch.
Claim 27
Dependent Claim
28 words
24 . A distraction device as in claim 10 , wherein the first pitch is within the range of from about 10 to about 15 turns per inch.
Claim 28
Dependent Claim
28 words
25 . A distraction device as in claim 10 , wherein the second pitch is within the range of from about 10 to about 20 turns per inch.
Claim 29
Dependent Claim
23 words
26 . A distraction device as in claim 10 , wherein the second pitch is at least about 105% of the first pitch.
Claim 30
Dependent Claim
23 words
27 . A distraction device as in claim 10 , wherein the second pitch is at least about 110% of the first pitch.
Claim 31
Dependent Claim
23 words
28 . A distraction device as in claim 10 , wherein the second pitch is at least about 125% of the first pitch.
Claim 32
Dependent Claim
22 words
29 . A distraction device as in claim 10 , further comprising a releasable coupling, for releasably engaging a rotatable driver tool.
Claim 33
Dependent Claim
67 words
30 . 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 34
Dependent Claim
67 words
30 . 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 35
Dependent Claim
30 words
31 . A temporary distraction device as in claim 30 , wherein the elongate body has a length within the range of from about 1.25 inches to about 2.25 inches.
Claim 36
Dependent Claim
37 words
32 . A temporary distraction device as in claim 30 , 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 37
Dependent Claim
25 words
33 . A temporary distraction device as in claim 30 , further comprising complementary threaded surfaces in between the proximal component and the distal component.
Claim 38
Dependent Claim
18 words
34 . A temporary distraction device as in claim 30 , wherein the elongate body comprises stainless steel.
Claim 39
Dependent Claim
17 words
35 . A temporary distraction device as in claim 30 , wherein the elongate body comprises titanium.
Claim 40
Dependent Claim
33 words
36 . A temporary distraction device as in claim 30 , wherein each of the proximal thread and the distal thread extends counterclockwise around the body, viewed in a proximal to distal direction.
Claim 41
Dependent Claim
33 words
37 . A temporary distraction device as in claim 30 , wherein each of the proximal thread and the distal thread extends clockwise around the body, viewed in a proximal to distal direction.
Claim 42
Dependent Claim
24 words
38 . A temporary distraction device as in claim 30 , wherein each of the proximal thread and the distal thread are self tapping.
Claim 43
Dependent Claim
22 words
39 . A temporary distraction device as in claim 30 , further comprising a releasable coupling, for releasably engaging the rotatable driver.
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