US20030195551A1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cannula for receiving surgical instruments
Assignee: Zimmer Spine Inc
•
Filing: 2003-05-16
•
Granted: —
•
Expires: 2023-05-16
Abstract
Abstract A cannula ( 10 ) receives surgical instruments ( 120 ) for performing a surgical procedure on a body ( 130 ). The cannula ( 10 ) comprises a tube structure ( 12 ) defining a passage ( 16 ) through which the surgical instruments ( 120 ) are inserted into the body ( 130 ). The tube structure ( 12 ) has a proximal end ( 20 ) and a distal end ( 62 ). The tube structure ( 12 ) includes an expandable portion ( 40 ) for enabling an increase in the cross-sectional area of the passage ( 16 ) at the distal end ( 62 ). The expandable portion ( 40 ) of the tube structure ( 12 ), when expanded, has a conical configuration.
Inventors
- 👤 Thomas Davison
- 👤 Timothy Taylor
- 👤 Adam Sher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:25
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/34; A61B17/3417; A61B17/3421; A61B17/02; A61B17/0218; A61B17/16; A61B17/17; A61B17/1739; A61B17/1757; A61B17/32; A61B17/320016; A61B17/32002; A61B17/3439; A61B17/0293; A61B17/1735; A61B17/28; A61B17/2812; A61B17/282; A61B17/29; A61B17/00234; A61B2017/00238; A61B2017/00261; A61B2017/0046
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
139 words
1 . A device for retracting tissue to provide access to a surgical location within a patient, said device comprising: an elongate body having a proximal end and a distal end and defining a length between the proximal and distal ends such that the distal end can be positioned inside the patient adjacent the surgical location; and a passage extending through the elongate body between the proximal and distal ends, the passage being defined by a smooth metal inner surface extending substantially entirely around the perimeter of the passage between the proximal and distal ends; wherein the elongate body is actuatable between a first configuration sized for insertion into the patient and a second configuration wherein the cross-sectional area of said passage at the distal end is greater than the cross-sectional area of said passage at the proximal end.
Claim 2
Dependent Claim
139 words
1 . A device for retracting tissue to provide access to a surgical location within a patient, said device comprising: an elongate body having a proximal end and a distal end and defining a length between the proximal and distal ends such that the distal end can be positioned inside the patient adjacent the surgical location; and a passage extending through the elongate body between the proximal and distal ends, the passage being defined by a smooth metal inner surface extending substantially entirely around the perimeter of the passage between the proximal and distal ends; wherein the elongate body is actuatable between a first configuration sized for insertion into the patient and a second configuration wherein the cross-sectional area of said passage at the distal end is greater than the cross-sectional area of said passage at the proximal end.
Claim 3
Dependent Claim
24 words
2 . The device of claim 7 , further comprising a first tubular portion extending distally from the proximal end of the elongate body.
Claim 4
Dependent Claim
27 words
3 . The device of claim 2 , wherein the elongate body comprises a second tubular portion coupled with the first tubular portion and extending distally therefrom.
Claim 5
Dependent Claim
15 words
4 . The device of claim 3 , wherein the second tubular portion is expandable.
Claim 6
Dependent Claim
21 words
5 . The device of claim 7 , wherein the elongate body is sized to provide access to a spinal location.
Claim 7
Dependent Claim
31 words
6 . The device of claim 7 , wherein the elongate body comprises rigid material extending around substantially the entire perimeter of the cross-sectional area between the proximal and distal ends.
Claim 8
Dependent Claim
34 words
7 . The device of claim 1 , wherein the passage is sized such that more than one surgical instrument can be positioned simultaneously within the passage along the entire length of the passage.
Claim 9
Dependent Claim
32 words
8 . The device of claim 1 , wherein the elongate body defines a length between the proximal and distal ends such that the proximal end can be positioned outside the patient.
Claim 10
Dependent Claim
160 words
9 . A device for retracting tissue to provide minimally invasive access to a surgical location at or near the spine of a patient, said device comprising: a first elongate body at least partially defining a passage through which surgical instruments can be inserted to the surgical location, the passage being defined by a smooth metal surface extending substantially entirely around the perimeter of the passage, and wherein said first elongate body is capable of having a configuration when inserted within the patient wherein the cross-sectional area of said passage at a first location is greater than the cross-sectional area of said passage at a second location, wherein the first location is distal to the second location; and a second elongate body at least partially defining the passage; wherein at least the second elongate body is configured to at least partially reside adjacent the skin of the patient, said second elongate body being pivotably coupled with said first elongate body.
Claim 11
Dependent Claim
160 words
9 . A device for retracting tissue to provide minimally invasive access to a surgical location at or near the spine of a patient, said device comprising: a first elongate body at least partially defining a passage through which surgical instruments can be inserted to the surgical location, the passage being defined by a smooth metal surface extending substantially entirely around the perimeter of the passage, and wherein said first elongate body is capable of having a configuration when inserted within the patient wherein the cross-sectional area of said passage at a first location is greater than the cross-sectional area of said passage at a second location, wherein the first location is distal to the second location; and a second elongate body at least partially defining the passage; wherein at least the second elongate body is configured to at least partially reside adjacent the skin of the patient, said second elongate body being pivotably coupled with said first elongate body.
Claim 12
Dependent Claim
24 words
10 . The device of claim 9 , wherein the second elongate body is attached to the first elongate body by a single fastener.
Claim 13
Dependent Claim
45 words
11 . The device of claim 9 , further comprising a fastener, and wherein the first elongate body further comprises a first hole and the second elongate body comprises a second hole, the fastener configured to extend through the first hole and the second hole.
Claim 14
Dependent Claim
14 words
12 . The device of claim 11 , wherein the fastener comprises a rivet.
Claim 15
Dependent Claim
55 words
13 . The device of claim 9 , wherein the first elongate body includes a proximal end and a distal end, and the second elongate body comprises a proximal end and a distal end, and wherein the proximal end of the first elongate body is coupled to the distal end of the second elongate body.
Claim 16
Dependent Claim
34 words
14 . The device of claim 9 , wherein the passage is sized such that more than one surgical instrument can be positioned simultaneously within the passage along the entire length of the passage.
Claim 17
Dependent Claim
241 words
15 . A device for retracting tissue to provide minimally invasive access to a surgical location at or near the spine of a patient, said device comprising: an elongate body having a proximal end and a distal end and defining a length between the proximal and distal ends such that the distal end can be positioned inside the patient adjacent the surgical location, wherein the elongate body comprises rigid material extending around substantially the entire perimeter of the cross-sectional area between the proximal and distal ends; and a passage extending through the elongate body between the proximal and distal ends sized such that more than one surgical instrument can be positioned simultaneously within the passage along the entire length of the passage, the passage being defined by a smooth metal inner surface extending substantially entirely around the passage between the proximal and distal ends; wherein the elongate body is actuatable between a contracted configuration sized for insertion into the patient and an expanded configuration wherein the cross-sectional area of said passage at the distal end is greater than the cross-sectional area of said passage at the proximal end, an outer surface of the elongate body at least partially overlapping the inner surface of the elongate body in the contracted configuration, and wherein actuating the elongate body to the expanded configuration comprises reducing the overlap between the inner and outer surfaces along a pivot joint between adjacent portions of the elongate body.
Claim 18
Dependent Claim
241 words
15 . A device for retracting tissue to provide minimally invasive access to a surgical location at or near the spine of a patient, said device comprising: an elongate body having a proximal end and a distal end and defining a length between the proximal and distal ends such that the distal end can be positioned inside the patient adjacent the surgical location, wherein the elongate body comprises rigid material extending around substantially the entire perimeter of the cross-sectional area between the proximal and distal ends; and a passage extending through the elongate body between the proximal and distal ends sized such that more than one surgical instrument can be positioned simultaneously within the passage along the entire length of the passage, the passage being defined by a smooth metal inner surface extending substantially entirely around the passage between the proximal and distal ends; wherein the elongate body is actuatable between a contracted configuration sized for insertion into the patient and an expanded configuration wherein the cross-sectional area of said passage at the distal end is greater than the cross-sectional area of said passage at the proximal end, an outer surface of the elongate body at least partially overlapping the inner surface of the elongate body in the contracted configuration, and wherein actuating the elongate body to the expanded configuration comprises reducing the overlap between the inner and outer surfaces along a pivot joint between adjacent portions of the elongate body.
Claim 19
Dependent Claim
19 words
16 . The device of claim 15 , wherein the elongate body is capable of maintaining its contracted configuration.
Claim 20
Dependent Claim
18 words
17 . The device of claim 15 , wherein the elongate body is configured to be manually expanded.
Claim 21
Dependent Claim
25 words
18 . The device of claim 17 , wherein the passage is sized to receive an expander tool adapted to manually expand said elongate body.
Claim 22
Dependent Claim
32 words
19 . The device of claim 15 , wherein the elongate body defines a length between the proximal and distal ends such that the proximal end can be positioned outside the patient.
Claim 23
Dependent Claim
98 words
20 . A retractor for providing access to a surgical location within a patient, said device comprising: an elongate body having an outer surface and an inner surface, said inner surface defining a passage extending through the elongate body and through which surgical instruments can be inserted to the surgical location, said elongate body capable of having a configuration when inserted within the patient wherein the cross-sectional area of said passage at a first location is greater than the cross-sectional area of said passage at a second location, wherein the first location is distal to the second location.
Claim 24
Dependent Claim
98 words
20 . A retractor for providing access to a surgical location within a patient, said device comprising: an elongate body having an outer surface and an inner surface, said inner surface defining a passage extending through the elongate body and through which surgical instruments can be inserted to the surgical location, said elongate body capable of having a configuration when inserted within the patient wherein the cross-sectional area of said passage at a first location is greater than the cross-sectional area of said passage at a second location, wherein the first location is distal to the second location.
Claim 25
Dependent Claim
24 words
21 . The retractor of claim 20 , further comprising a first tubular portion extending distally from the proximal end of the elongate body.
Claim 26
Dependent Claim
27 words
22 . The retractor of claim 21 , wherein the elongate body comprises a second tubular portion coupled with the first tubular portion and extending distally therefrom.
Claim 27
Dependent Claim
15 words
23 . The retractor of claim 22 , wherein the second tubular portion is expandable.
Claim 28
Dependent Claim
21 words
24 . The retractor of claim 20 , wherein the elongate body is sized to provide access to a spinal location.
Claim 29
Dependent Claim
31 words
25 . The retractor of claim 20 , wherein the elongate body comprises rigid material extending around substantially the entire perimeter of the cross-sectional area between the proximal and distal ends.
Claim 30
Dependent Claim
34 words
26 . The retractor of claim 20 , wherein the passage is sized such that more than one surgical instrument can be positioned simultaneously within the passage along the entire length of the passage.
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