US20030083688A1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Configured and sized cannula
Assignee: DePuy Spine LLC
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Filing: 2001-10-30
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Granted: —
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Expires: 2021-10-30
Abstract
Abstract A dilator retractor and the dilators that are used for minimally invasive spinal surgery or other surgery are configured to accommodate the anatomical structure of the patient as by configuring the cross sectional area in an elliptical shape, or by forming a funnel configuration with the wider end at the proximate end. In some embodiments the distal end is contoured to also accommodate the anatomical structure of the patient so that a cylindrically shaped, funnel shaped, ovoid shaped dilator retractor can be sloped or tunneled to accommodate the bone structure of the patient or provide access for implants. The dilator retractor is made with different lengths to accommodate the depth of the cavity formed by the dilators.
Inventors
- 👤 Robert Simonson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:22
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/02; A61B17/0218; A61B1/00; A61B1/32; A61B17/025; A61B17/34; A61B17/3417; A61B17/3421; A61B17/56; A61B17/58; A61B17/68; A61B17/70; A61B17/7001; A61B17/7002; A61B17/84; A61B17/86; A61M; A61M29/00; A61M29/02; A61B2017/0256; A61B2017/3433; A61B2017/3443; A61B2017/564
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
44 words
1 . A dilator for use in surgery having an outer surface for insertion into an access hole formed in a patient for stretching the tissue adjacent to the access hole so as to enlarge the same wherein said outer surface is ovoid shaped.
Claim 2
Dependent Claim
44 words
1 . A dilator for use in surgery having an outer surface for insertion into an access hole formed in a patient for stretching the tissue adjacent to the access hole so as to enlarge the same wherein said outer surface is ovoid shaped.
Claim 3
Dependent Claim
70 words
2 . A dilator for use in surgery having an outer surface for insertion into an access hole formed in a patient for stretching the tissue adjacent to the access hole so as to enlarge the same as claimed in claim 1 wherein said dilator includes a proximal end and a distal end, and a tool engaging surface at the proximal end and a beveled portion at the distal end.
Claim 4
Dependent Claim
130 words
3 . A dilator for use in surgery having an outer surface for insertion into an access hole formed in a patient for stretching the tissue adjacent to the access hole so as to enlarge the same as claimed in claim 2 wherein said dilator is one of a series of a plurality of dilators, each of said plurality of dilators and including said dilator having an elliptical shape in cross section and the minor axis of each succeeding dilator being progressively larger than the proceeding dilator and each of said series of dilators having a straight through bore that is dimensioned to complement the next succeeding dilator and each of said dilators of said plurality of dilators are mounted in said straight through bore of the next succeeding dilator.
Claim 5
Dependent Claim
90 words
4 . A dilator retractor for use in surgery having a main elongated body defining a straight through bore for fitting over a dilator and said dilator retractor being inserted on a target located at the area where the surgery is being performed and remaining in position of a patient when the dilator is removed and for use by a surgeon for performing the surgery, said dilator retractor having a distal end portion, said distal end portion being contoured to match the bone structure of the patient at said target.
Claim 6
Dependent Claim
90 words
4 . A dilator retractor for use in surgery having a main elongated body defining a straight through bore for fitting over a dilator and said dilator retractor being inserted on a target located at the area where the surgery is being performed and remaining in position of a patient when the dilator is removed and for use by a surgeon for performing the surgery, said dilator retractor having a distal end portion, said distal end portion being contoured to match the bone structure of the patient at said target.
Claim 7
Dependent Claim
22 words
5 . A dilator retractor for use in surgery as claimed in claim 4 wherein said contour is defined by a slope.
Claim 8
Dependent Claim
22 words
6 . A dilator retractor for use in surgery as claimed in claim 4 wherein said contour is defined by a tunnel.
Claim 9
Dependent Claim
77 words
7 . A dilator retractor for use in surgery having a main elongated body defining a straight through bore for fitting over a dilator and said dilator retractor being inserted on a target located at the area where the surgery is being performed and remaining in position of a patient when the dilator is removed and for use by a surgeon for performing the surgery, wherein said main elongated body is other than circular in cross section.
Claim 10
Dependent Claim
77 words
7 . A dilator retractor for use in surgery having a main elongated body defining a straight through bore for fitting over a dilator and said dilator retractor being inserted on a target located at the area where the surgery is being performed and remaining in position of a patient when the dilator is removed and for use by a surgeon for performing the surgery, wherein said main elongated body is other than circular in cross section.
Claim 11
Dependent Claim
41 words
8 . A dilator retractor for use in surgery as claimed in claim 7 wherein said elongated body has a distal end, said distal end being contoured to accommodate the shape of the bone structure at said target of the patient.
Claim 12
Dependent Claim
22 words
9 . A dilator retractor for use in surgery as claimed in claim 8 wherein said contour is defined by a slope.
Claim 13
Dependent Claim
22 words
10 . A dilator retractor for use in surgery as claimed in claim 8 wherein said contour is defined by a tunnel.
Claim 14
Dependent Claim
77 words
11 . A dilator retractor for use in surgery having a main elongated body defining a straight through bore for fitting over a dilator and said dilator retractor being inserted on a target located at the area where the surgery is being performed and remaining in position of a patient when the dilator is removed and for use by a surgeon for performing the minimal invasive surgery, wherein said main elongated body is elliptical in cross section.
Claim 15
Dependent Claim
77 words
11 . A dilator retractor for use in surgery having a main elongated body defining a straight through bore for fitting over a dilator and said dilator retractor being inserted on a target located at the area where the surgery is being performed and remaining in position of a patient when the dilator is removed and for use by a surgeon for performing the minimal invasive surgery, wherein said main elongated body is elliptical in cross section.
Claim 16
Dependent Claim
41 words
12 . A dilator retractor for use in surgery as claimed in claim 11 wherein said elongated body has a distal end, said distal end being contoured to accommodate the shape of the bone structure at said target of the patient.
Claim 17
Dependent Claim
22 words
13 . A dilator retractor for use in surgery as claimed in claim 12 wherein said contour is defined by a slope.
Claim 18
Dependent Claim
22 words
14 . A dilator retractor for use in surgery as claimed in claim 12 wherein said contour is defined by a tunnel.
Claim 19
Dependent Claim
112 words
15 . In combination, a plurality of dilators and a dilator retractor, for use in performing surgery, each of said plurality of dilators having an ovoid shaped outer surface for fitting over the next preceding dilator of said plurality of dilators for insertion into an access hole formed in a patient for stretching the tissue adjacent to the access hole so as to enlarge the same, said dilator retractor having a complimentary ovoid shaped outer surface and dimensioned to fit over the last of said plurality of dilators and to remain in said patient when said dilators are removed whereby the dilator retractor is used by the surgeon to perform the surgery.
Claim 20
Dependent Claim
112 words
15 . In combination, a plurality of dilators and a dilator retractor, for use in performing surgery, each of said plurality of dilators having an ovoid shaped outer surface for fitting over the next preceding dilator of said plurality of dilators for insertion into an access hole formed in a patient for stretching the tissue adjacent to the access hole so as to enlarge the same, said dilator retractor having a complimentary ovoid shaped outer surface and dimensioned to fit over the last of said plurality of dilators and to remain in said patient when said dilators are removed whereby the dilator retractor is used by the surgeon to perform the surgery.
Claim 21
Dependent Claim
50 words
16 . In combination, a plurality of dilators and a dilator retractor as claimed in claim 15 wherein said dilator retractor is selected from a series of dilator retractors that have different lengths whereby the length selected matches the depth of cavity of the patient where the dilators were removed.
Claim 22
Dependent Claim
128 words
17 . A series of dilator retractors for use in surgery having a main elongated body defining a straight through bore for fitting over a dilator and said dilator retractor being inserted on a target located at the area where the surgery is being performed and remaining in position of a patient when the dilator is removed and for use by a surgeon for performing the surgery, each of said series of dilator retractors having a different length, each of said dilator retractor having a distal end portion, said distal end portion being contoured to match the bone structure of the patient at said target and one from said series being selected for use in the patient whose length matches the depth of cavity formed by the dilator.
Claim 23
Dependent Claim
128 words
17 . A series of dilator retractors for use in surgery having a main elongated body defining a straight through bore for fitting over a dilator and said dilator retractor being inserted on a target located at the area where the surgery is being performed and remaining in position of a patient when the dilator is removed and for use by a surgeon for performing the surgery, each of said series of dilator retractors having a different length, each of said dilator retractor having a distal end portion, said distal end portion being contoured to match the bone structure of the patient at said target and one from said series being selected for use in the patient whose length matches the depth of cavity formed by the dilator.
Claim 24
Dependent Claim
22 words
18 . A dilator retractor for use in surgery as claimed in claim 17 wherein said contour is defined by a slope.
Claim 25
Dependent Claim
22 words
19 . A dilator retractor for use in surgery as claimed in claim 17 wherein said contour is defined by a tunnel.
Claim 26
Dependent Claim
83 words
20 . A dilator retractor for use in surgery having an outer surface for insertion into an access hole formed in a patient by dilators used for stretching the tissue adjacent to the access hole so as to enlarge the same wherein said outer surface of said dilator retractor is funnel shaped and the larger diameter of the funnel shape is at the proximal end thereof whereby the dilator retractor serves as a working channel for the surgeon to perform the surgical procedure.
Claim 27
Dependent Claim
83 words
20 . A dilator retractor for use in surgery having an outer surface for insertion into an access hole formed in a patient by dilators used for stretching the tissue adjacent to the access hole so as to enlarge the same wherein said outer surface of said dilator retractor is funnel shaped and the larger diameter of the funnel shape is at the proximal end thereof whereby the dilator retractor serves as a working channel for the surgeon to perform the surgical procedure.
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