US20020032447A1
Expired / Lapsed
US
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Tools and methods for creating cavities in bone
Assignee: Synthes USA LLC
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Filing: 2001-08-28
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Granted: —
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Expires: 2021-08-28
Abstract
Abstract Tools for use in the creation of cavities in bones. The tools include a probe, a cannula that provides percutaneous passageway to the interior of the treated bone, a bone tamp, and a system for delivering bone filler material into the cavity. The bone tamp has a shaft that is inserted into the bone through the cannula. The end of the shaft that is inserted into the bone may have a flapper tip that extends out of axial alignment with the shaft upon deployment by the physician. Once the tip is deployed, the bone tamp can be rotated to form the cavity. The cavity may then be treated with a medicament, filled with bone filler material, or both. Other tools and materials described herein may be used to lift or restore the treated bone closer to its natural anatomy.
Inventors
- 👤 Stuart Weikel
- 👤 Nisra Thongpreda
- 👤 Mike Lehmicke
- 👤 Douglas Kephart
- 👤 Larry Binder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:04
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/88; A61B17/885; A61B17/8852; A61B17/8858; A61B17/16; A61B17/1662; A61B17/1671; A61B17/32; A61B17/320016; A61B17/68; A61B17/70; A61B17/7061; A61B17/1604; A61B17/1637; A61B17/32002; A61B17/8802; A61B17/8805; A61B17/8822; A61B2017/00004; A61B17/00234; A61B2017/00238; A61B2017/00261; A61B2017/00535; A61B2017/00557; A61B2017/00831; A61B2017/00867; A61B90/00; A61B90/39; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/44; A61F2/46; A61F2/4601
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
53 words
1 . A percutaneous surgical device for creating a cavity in bone, comprising: an elongated shaft having a radius and an axis of rotation; a tip that may be selectively moved in and out of alignment with the axis of the elongated shaft; and a hinge connecting the elongated shaft with the tip.
Claim 2
Dependent Claim
53 words
1 . A percutaneous surgical device for creating a cavity in bone, comprising: an elongated shaft having a radius and an axis of rotation; a tip that may be selectively moved in and out of alignment with the axis of the elongated shaft; and a hinge connecting the elongated shaft with the tip.
Claim 3
Dependent Claim
32 words
2 . The device of claim 1 further comprising a collar on said elongated shaft that causes the tip to be moved out of alignment with the axis of the elongated shaft.
Claim 4
Dependent Claim
51 words
3 . The device of claim 2 , wherein the tip has a limited range of motion and wherein rotation of the collar gradually decreases the range of motion of the tip until the tip is approximately held in place at its outermost position out of alignment with the elongated shaft.
Claim 5
Dependent Claim
23 words
4 . The device of claim 3 , wherein the range of motion of the tip is from about 0° to about 150°.
Claim 6
Dependent Claim
23 words
5 . The device of claim 3 , wherein the range of motion of the tip is from about 0° to about 90°.
Claim 7
Dependent Claim
28 words
6 . The device of claim 1 further comprising a pistol-grip that causes the tip to be moved out of alignment with the axis of the elongated shaft.
Claim 8
Dependent Claim
28 words
7 . The device of claim 6 , wherein the pistol-grip causes the tip to move out of alignment with the axis of the elongated shaft when squeezed.
Claim 9
Dependent Claim
24 words
8 . The device of claim 7 further comprising a locking mechanism that holds the tip in position even when the pistol-grip is released.
Claim 10
Dependent Claim
21 words
9 . The device of claim 1 wherein the tip is between about 4 mm to about 12 mm in length.
Claim 11
Dependent Claim
14 words
10 . The device of claim 1 wherein the tip is about 4 mm.
Claim 12
Dependent Claim
14 words
11 . The device of claim 1 wherein the tip is about 6 mm.
Claim 13
Dependent Claim
14 words
12 . The device of claim 1 wherein the tip is about 8 mm.
Claim 14
Dependent Claim
14 words
13 . The device of claim 1 wherein the tip is about 10 mm.
Claim 15
Dependent Claim
14 words
14 . The device of claim 1 wherein the tip is about 12 mm.
Claim 16
Dependent Claim
31 words
15 . The device of claim 1 further comprising a handle in communication with the elongated shaft, wherein the handle has an indicator of the direction of deployment of the tip.
Claim 17
Dependent Claim
17 words
16 . The device of claim 15 wherein the indicator is a flat surface on the handle.
Claim 18
Dependent Claim
12 words
17 . The device of claim 15 wherein the indicator is tactile.
Claim 19
Dependent Claim
13 words
18 . The device of claim 15 wherein the indicator is a marker.
Claim 20
Dependent Claim
14 words
19 . The device of claim 1 wherein the elongated shaft has depth markers.
Claim 21
Dependent Claim
24 words
20 . The device of claim 1 further comprising an indicator of the sweep length of the tip when said tip is partially deployed.
Claim 22
Dependent Claim
104 words
21 . A method for creating a cavity in bone comprising: creating a percutaneous passageway to the bone; positioning a cannula into the bone to create access to the interior of the bone; deploying a cavity creating tool into the interior of the bone, wherein said cavity creating tool comprises an elongated shaft having a radius and an axis of rotation, a tip that may be selectively moved in and out of alignment with the axis of the elongated shaft, and a hinge connecting the elongated shaft with the tip; and rotating the cavity creating tool to create a cavity in the cancellous bone.
Claim 23
Dependent Claim
104 words
21 . A method for creating a cavity in bone comprising: creating a percutaneous passageway to the bone; positioning a cannula into the bone to create access to the interior of the bone; deploying a cavity creating tool into the interior of the bone, wherein said cavity creating tool comprises an elongated shaft having a radius and an axis of rotation, a tip that may be selectively moved in and out of alignment with the axis of the elongated shaft, and a hinge connecting the elongated shaft with the tip; and rotating the cavity creating tool to create a cavity in the cancellous bone.
Claim 24
Dependent Claim
16 words
22 . The method of claim 21 further comprising inserting bone filler material into the cavity.
Claim 25
Dependent Claim
27 words
23 . The method of claim 21 further comprising the step of manually operating the tamp to obtain a tactile confirmation of the completeness of the cavity
Claim 26
Dependent Claim
30 words
24 . The method of claim 21 wherein the step of creating a percutaneous passageway to the bone comprises using a probe onto which said cannula may be slidably engaged.
Claim 27
Dependent Claim
45 words
25 . The method of claim 24 , wherein said probe first is engaged with the portion of the bone where the cannula will be positioned to create access to the interior of the bone, and then said cannula is slidably engaged with the probe.
Claim 28
Dependent Claim
33 words
26 . The method of claim 21 further comprising the step of deploying a bone restoration tool into the cavity to restore at least a portion of bone closer to its natural anatomy.
Claim 29
Dependent Claim
22 words
27 . The method of claim 26 wherein the step of restoring bone comprises introducing hydrogel to the area to be treated.
Claim 30
Dependent Claim
55 words
28 . A method for creating a cavity in bone comprising: creating a percutaneous passageway to the bone; positioning a cannula into the bone to create access to the interior of the bone; and deploying a bone restoration tool into the cavity to restore at least a portion of bone closer to its natural anatomy.
Claim 31
Dependent Claim
55 words
28 . A method for creating a cavity in bone comprising: creating a percutaneous passageway to the bone; positioning a cannula into the bone to create access to the interior of the bone; and deploying a bone restoration tool into the cavity to restore at least a portion of bone closer to its natural anatomy.
Claim 32
Dependent Claim
87 words
29 . The method of claim 28 further comprising deploying a cavity creating tool into the interior of the bone, wherein said cavity creating tool comprises an elongated shaft having a radius and an axis of rotation, a tip that may be selectively moved in and out of alignment with the axis of the elongated shaft, and a hinge connecting the elongated shaft with the tip; rotating the cavity creating tool to create a cavity in the cancellous bone; and inserting bone filler material into the cavity.
Claim 33
Dependent Claim
22 words
30 . The method of claim 28 wherein the step of restoring bone comprises introducing hydrogel to the area to be treated.
References Cited (Backward Citations)
No citation records indexed.
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