EP0818180A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Treatment accessory for endoscope
Assignee: Pentax Corp
•
Filing: 1997-07-10
•
Granted: —
•
Expires: 2017-07-10
Abstract
Abstract Provided is an accessory of an endoscope, including a tube. At least the distal end portion of the tube is formed to have certain resilience, and a plurality of slits extending the axial direction of the tube is formed at the distal end portion of the tube. A mechanism is provided to biasing the distal end of the tube towards the proximal end thereof so that the band portions between the plurality of slits radially expand to define a plurality of openings. The mechanism can forcibly strain the band portions and forcibly and radially expand the band portions.
Inventors
- 👤 Teruo c/o Asahi Kogyo K. K. Ouchi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 00:07
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/22; A61B17/221; A61B17/22004; A61B17/22012; A61B18/00; A61B2017/2212; A61B90/00; A61B90/36; A61B90/37; A61M; A61M2202/00; A61M2202/06; A61M25/00; A61M25/0067; A61M25/0068; A61M25/0074; A61M25/0082
Claims Analysis
Total Claims: 42
Claim 1
Independent Claim
25 words
An accessory of an endoscope, comprising a tube, said
tube being provided with a portion, at the distal end
thereof, having a plurality of openings.
Claim 2
Dependent Claim
29 words
The accessory according to claim 1, further provided
with a connector portion provided at a proximal end of
said tube, an external device being connected with said
connector portion.
Claim 3
Dependent Claim
28 words
The accessory according to claim 2, wherein said connector
includes a mouth piece coupled to said tube,
said mouth piece receiving a connecting portion of said
external device.
Claim 4
Dependent Claim
26 words
The accessory according to claim 3, wherein said mouth
piece is provided coaxially with said tube or is substantially
perpendicular to the axis of said tube.
Claim 5
Dependent Claim
92 words
The accessory according to anyone of the claims 1 to 4,
wherein said tube has a flexible portion at least at a
distal end portion thereof, wherein a plurality of
slits extending along the axis of said tube are formed
on said flexible portion to define bendable band sections,
and wherein a mechanism which applies force in a
direction where said flexible portion is compressed
along the axis of said tube, said plurality of openings
being formed as said bendable band sections expand radially
due to the force applied by said mechanism.
Claim 6
Dependent Claim
26 words
The accessory according to claim 5, wherein said mechanism
includes a wire, a distal end of which is connected
to the distal end of said tube.
Claim 7
Dependent Claim
27 words
The accessory according to claim 6, wherein there is a
clearance between the wire and the inner surface of the
tube for allowing fluid to flow through.
Claim 8
Dependent Claim
27 words
The accessory according to claim 6 or 7, wherein a
proximal end of said wire is secured to a second tube
which is connected to said tube.
Claim 9
Dependent Claim
24 words
The accessory according to claim 8, wherein said second
tube is fixed with respect to said tube, said bendable
band sections being radially expanded.
Claim 10
Dependent Claim
45 words
The accessory according to claim 8, wherein said second
tube is movable with respect to said tube along the axial
direction of said tube, the amount of radial expansion
of said bendable band sections being determined in
accordance with a position of said second tube.
Claim 11
Dependent Claim
32 words
The accessory according to claim 10, wherein a manipulation
member is connected to said second tube, said
wire being moved along the axis of said tube as said
manipulation member is operated.
Claim 12
Dependent Claim
34 words
The accessory according to claim 10 or 11, said mechanism
is further provided with a stopping structure for
arresting said second tube at at least one predetermined
position along the axis of said tube.
Claim 13
Dependent Claim
19 words
The accessory according to claim 12, wherein said predetermined
position is a position where said bendable
band sections expand.
Claim 14
Dependent Claim
56 words
The accessory according to claim 12, wherein said at
least one predetermined position includes at least a
first and a second stopping positions, amount of radial
expansion of said bendable band sections when said second
tube is located at said first position is greater
than that when said second tube is located at said second
position.
Claim 15
Dependent Claim
57 words
The accessory according to claim 14, wherein when said
tube is used for injecting fluid, said second tube is
positioned at said first position, when said tube is
used for tinction, said second tube is located at said
second position, or when said tube is used for aspiration,
said second tube is located at said second position.
Claim 16
Dependent Claim
48 words
The accessory according to claim 14, wherein when said
tube is used as a collecting instrument, an object can
be caught when said second tube is located at said
first position, and wherein an object can be grasped
when said second tube is located at said second position.
Claim 17
Dependent Claim
24 words
The accessory according to anyone of the claims 8 to
16, wherein a distal end portion of said wire is made
hard to bend.
Claim 18
Dependent Claim
31 words
The accessory according to claim 17, wherein said wire
is provided with a sheath at said distal end portion,
said distal end portion being hard to bend due to said
sheath.
Claim 19
Dependent Claim
19 words
The accessory according to claim 17, wherein said distal
end portion of said wire is formed to be rigid.
Claim 20
Dependent Claim
34 words
The accessory according to anyone of the claims 8 to
19, wherein an end piece is provided at the distal end
of said tube to which a distal end of said wire is connected.
Claim 21
Dependent Claim
26 words
The accessory according to claim 20, wherein said end
piece extends in the axial direction of said tube,
starting from the distal end of said tube.
Claim 22
Dependent Claim
17 words
The accessory according to claim 21, wherein said end
piece is a treatment instrument of said endoscope.
Claim 23
Dependent Claim
32 words
The accessory according to claim 22, wherein said
treatment instrument is a cautery instrument for cauterization
of an affected area or wherein said treatment
instrument is a lithotriptic instrument for crushing
calculi.
Claim 24
Dependent Claim
28 words
The accessory according to claim 22, 23 or 24, wherein
said treatment instrument requires energy to operate,
and wherein said wire transmits said energy for said
treatment instrument.
Claim 25
Dependent Claim
47 words
The accessory according to anyone of the claims 21 to
24, wherein a proximal end surface of said end piece is
on the proximal end side of said tube with respect to a
center of said bendable band sections when said bendable
band sections are expanded radially.
Claim 26
Dependent Claim
17 words
The accessory according to claim 25, wherein said
proximal end surface is formed as a conical surface.
Claim 27
Dependent Claim
23 words
The accessory according to claim 26, wherein an apical
angle of said conical surface is substantially 90 degrees
or less than 90 degrees.
Claim 28
Dependent Claim
29 words
The accessory according to claim 25, wherein said
proximal end surface of said end piece is a plane surface
which is substantially perpendicular to the axis
of said tube.
Claim 29
Dependent Claim
25 words
The accessory according to anyone of the claims 20 to
28, wherein a portion of said wire adjacent to said end
piece is made rigid.
Claim 30
Dependent Claim
20 words
The accessory according to anyone of the claims 8 to
29, wherein said wire is movable along an axis thereof.
Claim 31
Dependent Claim
32 words
The accessory according to anyone of the claims 5 to
30, wherein a maximum width of each of said plurality
of openings is not greater than an inner diameter of
said tube.
Claim 32
Dependent Claim
36 words
The accessory according to anyone of the claims 1 to 4,
wherein a meshed portion is provided at the distal end
of said tube, said plurality of openings being defined
as meshes of said meshed member.
Claim 33
Dependent Claim
33 words
The accessory according to claim 32, wherein said
meshed member comprises a net that is connected to the
distal end of said tube, covering an opening at the
distal end of said tube.
Claim 34
Dependent Claim
24 words
The accessory according to claim 33, wherein said net
is retractable inside said tube through said opening at
the distal end of said tube.
Claim 35
Dependent Claim
58 words
The accessory according to claim 33 or 34, wherein the
distal end of said wire is connected to said net so
that said net is movable between a position at which
said net is retracted and another position at which
said net is protruded from the distal end of said tube,
in accordance with operation of said wire.
Claim 36
Dependent Claim
33 words
The accessory according to claim 35, wherein said
mechanism comprises a stopper for arresting said wire
at at least one predetermined position along a movable
range in the axial direction of said wire.
Claim 37
Dependent Claim
26 words
The accessory according to claim 36, wherein said predetermined
position is a position at which said net is
protruded from the distal end of said tube.
Claim 38
Dependent Claim
30 words
The accessory according to anyone of the claims 33 to
37, wherein said net is protruded from the distal end
of said tube when said tube is used for aspiration.
Claim 39
Dependent Claim
57 words
An aspiration accessory for an endoscope, comprising:
a tube member, at least one opening formed on said tube
member; a scraper which is movable inside said tube member,
said scraper being capable of passing on said at least
one opening; and manipulating member which is manually operable to move
said scraper with respect to said tube member.
Claim 40
Dependent Claim
33 words
The aspiration accessory according to claim 39, wherein
said at least one opening is formed on a circumferential
surface of said tube member, and said scraper is
slidably fitted inside said tube member.
Claim 41
Dependent Claim
65 words
The aspiration accessory according to claim 40, wherein
said scraper is located at the distal end of said tube
member when said tube member is used for aspiration,
and wherein upon movement of said scraper from the distal
end of said tube member towards the proximal end of
said tube member, an object clogged at said plurality
of openings are removed therefrom by said scraper.
Claim 42
Dependent Claim
29 words
The aspiration accessory according to claim 40 or 41,
further provided with a stopper for arresting said
scraper at a predetermined position along the axis of
said tube member.
References Cited (Backward Citations)
JPS5254951Y2
Cited
JPH0513460U
Cited
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