U.S. patent application number 12/739866 was filed with the patent office on 2011-12-08 for tissue retrival bags.
This patent application is currently assigned to CORNELL UNIVERSITY. Invention is credited to Christopher Towe.
Application Number | 20110299799 12/739866 |
Document ID | / |
Family ID | 40580444 |
Filed Date | 2011-12-08 |
United States Patent
Application |
20110299799 |
Kind Code |
A1 |
Towe; Christopher |
December 8, 2011 |
TISSUE RETRIVAL BAGS
Abstract
A specimen removal bag may include a receptacle formed by a
biaxial braid, such that longitudinal tension on the receptacle
causes it to lengthen and to constrict, and at least one filament,
the filament having a portion around the receptacle and a portion
extending from one end of the receptacle, such that applying
tension to the filament causes the receptacle to constrict. A
specimen removal bag may include a receptacle and at least one
filament, the filament having a portion around the receptacle and a
portion extending from one end of the receptacle, such that
applying tension to the filament causes the receptacle to
constrict.
Inventors: |
Towe; Christopher; (New
York, NY) |
Assignee: |
CORNELL UNIVERSITY
Ithaca
NY
|
Family ID: |
40580444 |
Appl. No.: |
12/739866 |
Filed: |
October 27, 2008 |
PCT Filed: |
October 27, 2008 |
PCT NO: |
PCT/US08/81325 |
371 Date: |
May 11, 2011 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
60982569 |
Oct 25, 2007 |
|
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Current U.S.
Class: |
383/117 |
Current CPC
Class: |
A61B 17/00234 20130101;
A61B 2017/00287 20130101 |
Class at
Publication: |
383/117 |
International
Class: |
B65D 30/04 20060101
B65D030/04 |
Claims
1. A specimen removal bag comprising: a receptacle formed by a
biaxial braid, such that longitudinal tension on the receptacle
causes it to lengthen and to constrict; and at least one filament,
the filament having a portion around the receptacle and a portion
extending from one end of the receptacle, such that applying
tension to the filament causes the receptacle to constrict.
2. A specimen removal bag comprising a receptacle and at least one
filament, the filament having a portion around the receptacle and a
portion extending from one end of the receptacle, such that
applying tension to the filament causes the receptacle to
constrict.
3. The specimen removal bag of claim 2, wherein the filament is
coiled around the receptacle.
4. The specimen removal bag of claim 3, wherein the coil is fixed
at one end.
5. The specimen removal bag of claim 2, wherein the receptacle is
formed from two layers of material, and the filament passes through
a channel between, and defined by, the layers.
6. The specimen removal bag of claim 2, further comprising a
channel formed on an inner or outer surface of the receptacle,
through which channel the filament passes.
7. The specimen removal bag of claim 2, further comprising
additional filaments, each filament encircling the receptacle at a
unique position along the receptacle.
8. The specimen removal bag of claim 2, wherein the receptacle is
formed by a biaxial braid, such that longitudinal tension on the
receptacle causes it to lengthen and to narrow.
9. A specimen removal bag comprising: a receptacle formed by a
biaxial braid, such that longitudinal tension on the receptacle
causes it to lengthen and to constrict; and means for constricting
the receptacle when tension is applied to one or both ends of the
receptacle.
10. A method of removing a specimen, comprising: capturing a
specimen in the specimen removal bag of any previous claim; and
applying tension to the filament, thereby causing the receptacle of
the specimen removal bag to constrict.
11. The method of claim 9, wherein tension is applied to the
filament by anchoring the receptacle and pulling on the
filament.
12. The method of claim 9, wherein tension is applied to the
filament by simultaneously pulling on the filament and another
filament extending from an opposite end of the receptacle.
Description
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application claims the benefit of U.S. provisional
application Ser. No. 60/982,569, filed Oct. 25, 2007, which is
hereby incorporated herein by reference.
BRIEF DESCRIPTION OF THE DRAWINGS
[0002] FIGS. 1-2 show an endoscopic/laparoscopic tissue retrieval
bag, having a single filament drawstring disposed in a helical
pattern, in open and closed orientations, respectively.
[0003] FIGS. 3-4 show an endoscopic/laparoscopic tissue retrieval
bag, having multiple filament drawstrings separately disposed as
rings, in open and closed orientations, respectively.
[0004] FIGS. 5-6 show an endoscopic/laparoscopic tissue retrieval
bag, having braided filaments that close when tensioned
longitudinally by drawstrings, in open and closed orientations,
respectively.
DETAILED DESCRIPTION
[0005] An endoscopic/laparoscopic tissue removal bag may include a
wall defining the bag and a wire, string, or other filament coiled
around the specimen bag (FIG. 1) and tightened like a boa
constrictor snake after the bag is closed (FIG. 2). The bag may
include a semi-rigid rib or ribs on the inside or outside surfaces
of the bag, or within the material of the bag, or may incorporate a
semi-rigid cupped shaped support along one side--again on the
inside or outside surfaces of the bag, or within the material of
the bag, to provide additional support. The bag wall may have more
than one layer, with a channel for the drawstring defined between
two layers. Alternatively, the drawstring may run through a tube or
channel attached to or formed on the inner or outer wall of the
bag. A rib or support may be hollow so that the filament can run
therethrough.
[0006] In an alternate embodiment, the bag may have several
filaments, each running in a ring in or on the bag wall (FIGS. 3
and 4).
[0007] In another alternate embodiment (shown in FIGS. 5 and 6),
the bag may have filaments arranged in a cylindrical braid, such as
a biaxial braid (similar to a Chinese finger puzzle), which will
constrict in diameter when tension is applied along an axis
approximately orthogonal to the diameter. Tension may be applied at
one end while the opposing end is held anchored, or tension may be
applied at both ends. Tension may be applied via a drawstring,
wire, or other apparatus.
[0008] A filament may be made of a variety of materials, such as
textile, metal, and/or polymer. Examples of filaments include
suture, fishing line, wire, and rubber bands. In the case of
rubber-band filaments, the specimen bag could initially be held
open, with the bands under tension, and then allowed to snap closed
for removal. A filament may have a variety of cross-sections, such
as circular and polygonal. The filament can be band-shaped (i.e.,
wider than it is tall in cross-section, in some cases, two-,
three-, four-, five-, or ten-times wider than it is tall). A
filament made be formed from woven filaments or a strap made of a
single material such as a polymer or metal.
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