Patent US1808921A successfully refreshed from Google Patents.
US20030109883A1
Expired / Lapsed
US
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Surgical instruments and a set of surgical instruments for use in treatment of vertebral bodies
Assignee: Pentax Corp
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Filing: 2002-12-05
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Granted: —
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Expires: 2022-12-05
Abstract
Abstract Various surgical instruments for use in the treatment of vertebral body compression fractures, used respectively for: widening a working path; reducing deformity; inserting a filler; and impacting a filler are provided. A set of surgical instruments including these instruments makes it possible to treat collapsed vertebral bodies easily and reliably are provided. The set includes a guide rod 1 (an instrument for widening a working path), a vertical elevator 2 (an instrument for reducing deformity), a horizontal elevator 3 (an instrument for reducing deformity), an inserter 4 (an instrument for inserting a filler), and an impactor 5 (an instrument for impacting a filler). The guide rod 1 is used for widening a path 93 formed in a collapsed vertebral body 91. The vertical elevator 2 is used for returning the upper anterior portion of the collapsed vertebral body 91 to a substantially original shape. The horizontal elevator 3 is used for returning the upper middle portion of the collapsed vertebral body 91 to a substantially original shape. The inserter 4 is used for inserting a filler into the reduced vertebral body 91. The impactor 5 is used for increasing the density of the filler inserted into the reduced vertebral body 91.
Inventors
- 👤 Hiromi Matsuzaki
- 👤 Yoshie Tominaga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:29
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/70; A61B17/7094; A61B17/7095; A61B17/16; A61B17/1604; A61B17/1662; A61B17/1671; A61B17/88; A61B17/8866; A61B90/00; A61B90/06; A61B2090/062; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/44; A61F2/46; A61F2/4601; A61F2/4603; A61F2/28; A61F2002/2835; A61F2/4657; A61F2002/4662; A61F2310/00; A61F2310/00005; A61F2310/00179; A61F2310/00185; A61F2310/00203; A61F2310/00239; A61F2310/00293
Claims Analysis
Total Claims: 46
Claim 1
Independent Claim
71 words
1 . An instrument for use in the treatment of vertebral body compression fractures for widening a working path formed in at least a collapsed vertebral body, the instrument for widening a working path comprising a rod-shaped body having a distal end, a proximal end and a peripheral surface, wherein the distal end portion of the rod-shaped body is adapted to be inserted into the working path to increase its diameter.
Claim 2
Dependent Claim
71 words
1 . An instrument for use in the treatment of vertebral body compression fractures for widening a working path formed in at least a collapsed vertebral body, the instrument for widening a working path comprising a rod-shaped body having a distal end, a proximal end and a peripheral surface, wherein the distal end portion of the rod-shaped body is adapted to be inserted into the working path to increase its diameter.
Claim 3
Dependent Claim
27 words
2 . The instrument for widening a working path as claimed in claim 1 , wherein the distal end of the rod-shaped body has a rounded form.
Claim 4
Dependent Claim
61 words
3 . The instrument for widening a working path as claimed in claim 1 , wherein the instrument is adapted to be used by being inserted into the working path, and the rod-shaped body has a scale for use in indicating a depth of insertion, the scale extending in a longitudinal direction of the rod-shaped body along the peripheral surface thereof.
Claim 5
Dependent Claim
34 words
4 . The instrument for widening a working path as claimed in claim 1 , the instrument further comprises a grip section which is fixedly provided on the proximal end of the rod-shaped body.
Claim 6
Dependent Claim
80 words
5 . An instrument for use in the treatment of vertebral body compression fractures for returning the upper portion of a collapsed vertebral body to a substantially original shape, the instrument for reducing deformity comprising: a rod-shaped main body having a distal end, a proximal end and a peripheral surface; and a pushing section provided on the distal end of the main body, the pushing section being inclined to the main body for pushing-the upper portion of the vertebral body.
Claim 7
Dependent Claim
80 words
5 . An instrument for use in the treatment of vertebral body compression fractures for returning the upper portion of a collapsed vertebral body to a substantially original shape, the instrument for reducing deformity comprising: a rod-shaped main body having a distal end, a proximal end and a peripheral surface; and a pushing section provided on the distal end of the main body, the pushing section being inclined to the main body for pushing-the upper portion of the vertebral body.
Claim 8
Dependent Claim
36 words
6 . The instrument for reducing deformity as claimed in claim 5 , wherein the pushing section has a contact surface which comes into contact with the upper surface of the inside of the vertebral body.
Claim 9
Dependent Claim
21 words
7 . The instrument for reducing deformity as claimed in claim 6 , wherein the contact surface is formed with irreguralities.
Claim 10
Dependent Claim
28 words
8 . The instrument for reducing deformity as claimed in claim 6 , wherein the pushing section has a distal end surface that functions as the contact surface.
Claim 11
Dependent Claim
28 words
9 . The instrument for reducing deformity as claimed in claim 8 , wherein the instrument is used for reducing the upper anterior portion of the vertebral body.
Claim 12
Dependent Claim
39 words
10 . The instrument for reducing deformity as claimed in claim 6 , wherein the pushing section has a peripheral surface, and at least a part of the peripheral surface of the pushing section functions as the contact surface.
Claim 13
Dependent Claim
28 words
11 . The instrument for reducing deformity as claimed in claim 10 , wherein the instrument is used for reducing the upper middle portion of the vertebral body.
Claim 14
Dependent Claim
23 words
12 . The instrument for reducing deformity as claimed in claim 5 , wherein the pushing section is formed into a flat shape.
Claim 15
Dependent Claim
24 words
13 . The instrument for reducing deformity as claimed in claim 5 , wherein the pushing section is integrally formed with the main body.
Claim 16
Dependent Claim
30 words
14 . The instrument for reducing deformity as claimed in claim 5 , wherein the inclined angle between the pushing section and the main body is between 5 to 30°.
Claim 17
Dependent Claim
67 words
15 . The instrument for reducing deformity as claimed in claim 5 , wherein the instrument is adapted to be used by being inserted into the vertebral body through a working path formed in a vertebra, and the main body has a scale for use in indicating a depth of insertion, the scale extending in a longitudinal direction of the main body along the peripheral surface thereof.
Claim 18
Dependent Claim
32 words
16 . The instrument for reducing deformity as claimed in claim 5 , the instrument further comprises a grip section which is fixedly provided on the proximal end of the main body.
Claim 19
Dependent Claim
30 words
17 . The instrument for reducing deformity as claimed in claim 5 , wherein the instrument has a marker for indicating a direction in which the pushing section is inclined.
Claim 20
Dependent Claim
94 words
18 . An instrument for use in the treatment of vertebral body compression fractures for inserting a filler Into a reduced vertebral body, the instrument for inserting a filler comprising: a tubular body having a distal end, a proximal end and a peripheral surface, the tubular body having a lumen passing through from the proximal end to the distal end thereof; and an ejector bar which is inserted into the lumen of the tubular body to eject a filler filled in the lumen, the ejector bar having a distal end and a proximal end.
Claim 21
Dependent Claim
94 words
18 . An instrument for use in the treatment of vertebral body compression fractures for inserting a filler Into a reduced vertebral body, the instrument for inserting a filler comprising: a tubular body having a distal end, a proximal end and a peripheral surface, the tubular body having a lumen passing through from the proximal end to the distal end thereof; and an ejector bar which is inserted into the lumen of the tubular body to eject a filler filled in the lumen, the ejector bar having a distal end and a proximal end.
Claim 22
Dependent Claim
26 words
19 . The instrument for inserting a filler as claimed in claim 18 , wherein the distal end of the ejector bar has a rounded form.
Claim 23
Dependent Claim
42 words
20 . The instrument for inserting a filler as claimed in claim 18 , wherein the distal end of the ejector bar projects outward from the distal end of the tubular body when the ejector bar is inserted into the tubular body.
Claim 24
Dependent Claim
36 words
21 . The instrument for inserting a filler as claimed in claim 18 , wherein the ejector bar has an ejector bar grip section which is fixedly provided on the proximal end of the ejector bar.
Claim 25
Dependent Claim
68 words
22 . The instrument for inserting a filler as claimed in claim 18 , wherein the instrument is adapted to be used by being inserted into the vertebral body through a working path formed in a vertebra, and the tubular body has a scale for use in indicating a depth of insertion, the scale extending in a longitudinal direction of the tubular body along the peripheral surface thereof.
Claim 26
Dependent Claim
44 words
23 . The instrument for inserting a filler as claimed in claim 18 , wherein the tubular body has a tubular body grip section having a proximal end, the tubular body grip section being fixedly provided on the proximal end of the tubular body.
Claim 27
Dependent Claim
40 words
24 . The instrument for inserting a filler as claimed in claim 23 , wherein the tubular body grip section has a longitudinal middle portion extending in a circumferential direction, and a recess is formed in the longitudinal middle portion.
Claim 28
Dependent Claim
31 words
25 . The instrument for inserting a filler as claimed in claim 23 , wherein the tubular body grip section has an annular flange which is provided on its proximal end.
Claim 29
Dependent Claim
31 words
26 . The instrument for inserting a filler as claimed in claim 23 , wherein the internal diameter of the tubular body grip section is gradually increased toward its proximal end.
Claim 30
Dependent Claim
21 words
27 . The instrument for inserting a filler as claimed in claim 18 , wherein the filler is a bone prosthesis.
Claim 31
Dependent Claim
23 words
28 . The instrument for inserting a filler as claimed in claim 27 , wherein the bone prosthesis is constituted from ceramic powders.
Claim 32
Dependent Claim
25 words
29 . The instrument for inserting a filler as claimed in claim 27 , wherein the bone prosthesis is constituted from calcium phosphate-based compound powders.
Claim 33
Dependent Claim
74 words
30 . An instrument for use in the treatment of vertebral body compression fractures for impacting a filler inserted in a reduced vertebral body to a high density, the instrument for impacting a filler comprising: a rod-shaped main body having a distal end, a proximal end and a peripheral surface; and a impacting section provided on the distal end of the main body for impacting the filler, the impacting section having a distal end.
Claim 34
Dependent Claim
74 words
30 . An instrument for use in the treatment of vertebral body compression fractures for impacting a filler inserted in a reduced vertebral body to a high density, the instrument for impacting a filler comprising: a rod-shaped main body having a distal end, a proximal end and a peripheral surface; and a impacting section provided on the distal end of the main body for impacting the filler, the impacting section having a distal end.
Claim 35
Dependent Claim
30 words
31 . The instrument for impacting a filler as claimed in claim 30 , wherein the outer diameter of the impacting section is gradually increased toward the distal end thereof.
Claim 36
Dependent Claim
26 words
32 . The instrument for impacting a filler as claimed in claim 30 , wherein the impacting section has a distal end surface formed with irregularities.
Claim 37
Dependent Claim
25 words
33 . The instrument for impacting a filler as claimed in claim 30 , wherein the impacting section is integrally formed with the main body.
Claim 38
Dependent Claim
68 words
34 . The instrument for impacting a filler as claimed in claim 30 , wherein the instrument is adapted to be used by being inserted into the vertebral body through a working path formed in a vertebra, and the main body has a scale for use in indicating a depth of insertion, the scale extending in a longitudinal direction of the main body along the peripheral surface thereof.
Claim 39
Dependent Claim
37 words
35 . A set of surgical instruments for use in the treatment of vertebral body compression fractures, the set comprising at least one instrument for reducing deformity claimed in any one of claims 5 to 17 .
Claim 40
Dependent Claim
43 words
36 . The set of surgical instruments as claimed in claim 35 , wherein said at least one instrument includes two or more different type instruments for reducing deformity for selective use depending on a region to be reduced in the vertebral body.
Claim 41
Dependent Claim
36 words
37 . The set of surgical instruments as claimed in claim 35 , wherein'the set further includes at least one instrument for widening a working path claimed in any one of claims 1 to 4 .
Claim 42
Dependent Claim
39 words
38 . The set of surgical instruments as claimed in claim 37 , wherein said at least one instrument includes two or more instruments for widening a working path, in which each rod-shaped body has a different outer diameter.
Claim 43
Dependent Claim
34 words
39 . The set of surgical instruments as claimed in claim 35 , wherein the set further includes the instrument for inserting a filler claimed in any one of claims 18 to 29 .
Claim 44
Dependent Claim
34 words
40 . The set of surgical instruments as claimed in claim, 35 , wherein the set further includes the instrument for impacting a filler claimed in any one of claims 30 to 34 .
Claim 45
Dependent Claim
26 words
41 . The set of surgical instruments as claimed in claim 35 , wherein each of the instruments, in the set has a different grip section.
Claim 46
Dependent Claim
25 words
42 . The set of surgical instruments as claimed in claim 41 , wherein each of the instruments can be identified by its grip section.
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