US20020111620A1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Devices and methods for maintaining collateral channels in tissue
Assignee: Broncus Medical Inc
•
Filing: 2001-09-04
•
Granted: —
•
Expires: 2021-09-04
Abstract
Abstract The devices and methods of placement of such devices disclosed herein are directed to altering gaseous flow within a lung to improve the expiration cycle of, for instance, an individual having Chronic Obstructive Pulmonary Disease. More particularly, these devices produce and maintain collateral openings or channels through the airway wall so that oxygen depleted/carbon dioxide rich air is able to pass directly out of the lung tissue to facilitate both the exchange of oxygen ultimately into the blood and/or to decompress hyper-inflated lungs. The medical kits disclosed herein are also directed to produce and maintain collateral openings through airway walls.
Inventors
- 👤 Joel Cooper
- 👤 James Davenport
- 👤 Bryan Loomas
- 👤 Don Tanaka
- 👤 Gary Kaplan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:07
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61F2/86; A61F2/90; A61B; A61B17/00; A61B17/064; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B18/1485; A61B18/1492; A61B8/00; A61B8/12; A61B8/44; A61B8/4444; A61B8/445; A61F2/02; A61F2/04; A61F2/06; A61F2/07; A61F2/92; A61B17/11; A61B18/1477; A61B2017/00017; A61B2017/00022; A61B2017/00106; A61B17/00234; A61B2017/00238; A61B2017/00243; A61B2017/00247; A61B2017/00252; A61B17/0057; A61B2017/00575; A61B2017/00743; A61B2017/00809; A61B17/22; A61B2017/22051; A61B2017/22065; A61B2017/22067; A61B2018/00053; A61B2018/00214; A61B2018/00315; A61B2018/00541; A61B2018/00571; A61B2018/00601; A61B2018/00636; A61B2018/00696; A61B2018/00738; A61B2018/00982; A61B2018/1405; A61B2018/1417; A61B2018/1425; A61B2018/1472; A61B90/00; A61B90/39; A61B2090/3937; A61B2090/395; A61B2218/00; A61B2218/001; A61B2218/002; A61B5/00; A61B5/48; A61B5/4887; A61B5/489; A61B8/06; A61B90/36; A61F2/24; A61F2/2412; A61F2/91; A61F2002/043; A61F2002/061; A61F2002/072; A61F2/848; A61F2002/8483; A61F2220/00; A61F2220/0008; A61F2220/0016; A61F2230/00; A61F2230/0002; A61F2230/0028; A61F2230/005; A61F2230/0058; A61F2230/0063; A61F2230/0067; A61F2230/0073; A61F2230/0076; A61F2230/0078
Claims Analysis
Total Claims: 41
Claim 1
Independent Claim
40 words
1 . A method of placing a conduit within lung tissue comprising: feeding a guide-wire to a site within the lung; advancing a conduit to the site using the guide-wire; and placing the conduit within lung tissue at the site.
Claim 2
Dependent Claim
40 words
1 . A method of placing a conduit within lung tissue comprising: feeding a guide-wire to a site within the lung; advancing a conduit to the site using the guide-wire; and placing the conduit within lung tissue at the site.
Claim 3
Dependent Claim
39 words
2 . The method of claim 1 , further comprising inserting an access device within the lung, the access device adapted to locate the site prior to the feeding step, wherein the access device includes at least one lumen.
Claim 4
Dependent Claim
15 words
3 . The method of claim 2 , wherein the access device comprises a bronchoscope.
Claim 5
Dependent Claim
41 words
4 . The method of claim 2 , further comprising: feeding a blood-vessel detection device through the lumen of the access device; and selecting the site within the lungs using the blood-vessel detection device to avoid blood vessels within the lung.
Claim 6
Dependent Claim
36 words
5 . The method of claim 2 , further comprising: feeding a guide-wire through the lumen of the access device; and creating a collateral channel with the guide-wire at the site prior to placing the conduit.
Claim 7
Dependent Claim
26 words
6 . The method of claim 5 , further comprising: leaving the guide-wire extending through the collateral channel and withdrawing the access device from the lung
Claim 8
Dependent Claim
28 words
7 . The method of claim 6 , further comprising: returning the access device to a point near the collateral channel to allow visualization of the collateral channel
Claim 9
Dependent Claim
38 words
8 . The method of claim 2 , further comprising: feeding a hole-making device through the lumen of the access device; and creating a collateral channel with the hole-making device at the site prior to placing the conduit.
Claim 10
Dependent Claim
23 words
9 . The method of claim 8 , wherein feeding the guide-wire to the site comprises feeding the guide-wire through the collateral channel.
Claim 11
Dependent Claim
28 words
10 . The method of claim 2 , wherein advancing the conduit comprises feeding a catheter having a conduit attached thereto over the guide-wire to the collateral channel.
Claim 12
Dependent Claim
23 words
11 . The method of 10 , wherein placing the conduit within lung tissue further includes expanding the conduit within the collateral channel.
Claim 13
Dependent Claim
23 words
11 . The method of 10 , wherein placing the conduit within lung tissue further includes expanding the conduit within the collateral channel.
Claim 14
Dependent Claim
143 words
12 . A conduit for maintaining the patency of an opening in tissue comprising: a center section having a first end and a second end and a central axis extending between said ends, a passageway within said center section extending between said ends, said center section having a wall; at least one end section having a first end which abuts an end of the center section and a second end, a central axis extending between said ends, a passageway within said center section extending between said ends, said end section having a wall wherein at least a portion of each of said end sections being connected to said center section have a weakened section such that each of said free ends of said end section may bend at said respective weakened section when an outward radial force is applied to said extension member.
Claim 15
Dependent Claim
143 words
12 . A conduit for maintaining the patency of an opening in tissue comprising: a center section having a first end and a second end and a central axis extending between said ends, a passageway within said center section extending between said ends, said center section having a wall; at least one end section having a first end which abuts an end of the center section and a second end, a central axis extending between said ends, a passageway within said center section extending between said ends, said end section having a wall wherein at least a portion of each of said end sections being connected to said center section have a weakened section such that each of said free ends of said end section may bend at said respective weakened section when an outward radial force is applied to said extension member.
Claim 16
Dependent Claim
29 words
13 . The conduit of claim 12 , wherein said weakened section comprises a reduced wall thickness being less than a thickness of said wall of said center section.
Claim 17
Dependent Claim
26 words
14 . The conduit of claim 12 , wherein said conduit comprises a material selected from the group consisting of polytetrafluoroethylene, polypropylene, and a combination thereof.
Claim 18
Dependent Claim
34 words
15 . The conduit of claim 12 , wherein said center section is radially expandable away from said central axis to allow said center section to assume an expanded profile from a reduced profile.
Claim 19
Dependent Claim
40 words
16 . The conduit of claim 15 , wherein a length of said center section is less than twice the square root of a cross sectional area of said center section when said center section is in said expanded profile.
Claim 20
Dependent Claim
34 words
17 . The conduit of claim 15 , wherein a length of said center section measured along said central axis decreases as said center section expands from said reduced profile to said expanded profile.
Claim 21
Dependent Claim
20 words
18 . The conduit of claim 15 , wherein said center section is spring biased to assume said expanded profile.
Claim 22
Dependent Claim
34 words
19 . The conduit of claim 12 , where said end section extending from said first end of said conduit are longer than said end section extending from a second end of said conduit.
Claim 23
Dependent Claim
25 words
20 . The conduit of claim 12 , wherein said passageway has a cross sectional area between 0.196 mm 2 to 254 mm 2 .
Claim 24
Dependent Claim
25 words
21 . The conduit of claim 12 , wherein said passageway has a cross sectional area between 3 mm 2 to 20 mm 2 .
Claim 25
Dependent Claim
15 words
22 . The conduit of claim 12 , wherein said conduit has an asymmetrical profile.
Claim 26
Dependent Claim
23 words
23 . The conduit of claim 12 , wherein said conduit has a ratio of a length to a diameter of approximately 1:1.
Claim 27
Dependent Claim
16 words
24 . The conduit of claim 12 , further comprising a self-cleaning mechanism within said passageway.
Claim 28
Dependent Claim
18 words
25 . The conduit of claim 24 , wherein said self-cleaning mechanism is a ball bearing shaker valve.
Claim 29
Dependent Claim
17 words
26 . The conduit of claim 12 , further comprising a one-way valve located within said passageway.
Claim 30
Dependent Claim
18 words
27 . The conduit of claim 12 , further comprising a gas-permeable bacterial-resistant barrier located within said passageway.
Claim 31
Dependent Claim
29 words
28 . A medical kit for improving gaseous flow within a diseased lung comprising: a conduit; and a set of instructions teaching any of claims 1 - 11 .
Claim 32
Dependent Claim
13 words
29 . The medical kit of claim 28 , further comprising a bronchoscope.
Claim 33
Dependent Claim
13 words
30 . The medical kit of claim 28 , further comprising a guide-wire.
Claim 34
Dependent Claim
15 words
31 . The medical kit of claim 28 , further comprising a blood-vessel detection device.
Claim 35
Dependent Claim
14 words
32 . The medical kit of claim 28 , further comprising a hole-making device.
Claim 36
Dependent Claim
50 words
33 . A medical kit for improving gaseous flow within a diseased lung comprising: a conduit; and an instruction teaching: selecting at least one site for collateral ventilation of the lung; creating a collateral channel at each of the sites for collateral ventilation; inserting the conduit in the collateral channel.
Claim 37
Dependent Claim
50 words
33 . A medical kit for improving gaseous flow within a diseased lung comprising: a conduit; and an instruction teaching: selecting at least one site for collateral ventilation of the lung; creating a collateral channel at each of the sites for collateral ventilation; inserting the conduit in the collateral channel.
Claim 38
Dependent Claim
13 words
34 . The medical kit of claim 33 , further comprising a bronchoscope.
Claim 39
Dependent Claim
13 words
35 . The medical kit of claim 33 , further comprising a guide-wire.
Claim 40
Dependent Claim
89 words
36 . The medical kit of claim 33 , wherein the conduit comprises a tubular center section having a first end and a second end and a central axis extending between said ends, a plurality of extension members having a free end extending from each end of said center section, said extension members arranged around a circumference of said center section, each of said free ends of said extension members being independently moveable in a direction orthogonal to said central axis to form an angle with said central axis.
Claim 41
Dependent Claim
50 words
37 . The medical kit of claim 33 , wherein the conduit comprises a tubular center section having a first end and a second end and a central axis extending between said ends, wherein said ends of said conduit are configured to expand radially outward from said tubular center section.
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