EP0369012A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Catheter tube
Assignee: Terumo Corp
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Filing: 1988-07-21
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Granted: —
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Expires: 2008-07-21
Abstract
Abstract This invention relates to a catheter tube which is fitted into and left in a body cavity having a relatively small diameter typified by a blood vessel and is used for the inspection or medical treatment of the interior of the body cavity. The catheter tube of the present invention is equipped with at least one inflatable balloon near its tip, and a lumen for inflating the balloon, a lumen for injecting a liquid into the body cavity and a lumen for storing an instrument for inspection or for medical treatment are formed inside a tube body. The features of the present invention reside in that the inspection or medical treatment instrument described above is moved in the longitudinal direction of the tube, the tip thereof is fed into and out from the opening of the lumen for housing the instrument to facilitate clear observation over a wide range, each of the lumens described above can be substituted by a commonly used lumen so as to reduce the diameter of the tube, observation is made between two balloons to secure a clearer observation image and a bypass lumen is disposed in order to secure the blood flow through the blood vessel even during observation and to enable observation for a lonq time.
Inventors
- 👤 Hiroaki Honda
- 👤 Masahiro Terumo Kabusiki Kaisha Nudesima
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 08:17
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/00064; A61B1/00071; A61B1/0008; A61B1/00082; A61B1/00131; A61B1/00135; A61B1/012; A61B1/015; A61B1/018; A61B1/12; A61B1/313; A61B1/3137; A61M; A61M25/00; A61M25/10; A61M25/1011; A61M25/1018; A61M25/10181; A61M25/10182
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
157 words
A catheter tube for use by inserting into a body cavity, comprising a tube body, at least one inflatable/contractible balloon attached around the outer peripheral wall of a distal portion of said tube body, lumens defined in said tube body and open to the distal portion of said tube body for accommodating an instrument and injecting a fluid, respectively, a lumen defined in said tube body in flow communication with the interior of said balloon for inflating said balloon, a visualizing or therapeutic instrument accommodated in said instrument accommodating lumen for visualizing or medically treating the interior of the body cavity, and manipulator means provided at a proximal side of said catheter tube for moving said visualizing or therapeutic instrument through the tube body in an axial direction thereof and locating said visualizing or therapeutic instrument at a required position relative to said tube body while maintaining said instrument accommodating lumen fluid tight at the proximal side.
Claim 2
Dependent Claim
157 words
A catheter tube for use by inserting into a body cavity, comprising a tube body, at least one inflatable/contractible balloon attached around the outer peripheral wall of a distal portion of said tube body, lumens defined in said tube body and open to the distal portion of said tube body for accommodating an instrument and injecting a fluid, respectively, a lumen defined in said tube body in flow communication with the interior of said balloon for inflating said balloon, a visualizing or therapeutic instrument accommodated in said instrument accommodating lumen for visualizing or medically treating the interior of the body cavity, and manipulator means provided at a proximal side of said catheter tube for moving said visualizing or therapeutic instrument through the tube body in an axial direction thereof and locating said visualizing or therapeutic instrument at a required position relative to said tube body while maintaining said instrument accommodating lumen fluid tight at the proximal side.
Claim 3
Dependent Claim
43 words
A catheter tube as set forth in claim 1 wherein said visualizing or therapeutic instrument is a bundle of optical fibers and the inner diameter of said instrument accommodating lumen is 1.1 to 3.0 times the outer diameter of the optical fiber bundle.
Claim 4
Dependent Claim
34 words
A catheter tube as set forth in claim 1 or 2 wherein the surface of said optical fiber bundle and/or the inner surface of said instrument accommodating lumen has been subjected to lubricating treatment.
Claim 5
Dependent Claim
61 words
A catheter tube as set forth in any one of claims 1 to 3 wherein said manipulator means includes a cylinder-shaped female connector connected for communication with said instrument accommodating lumen at the proximal end and a piston-shaped male connector received in the bore of said female connector through a sealing member and having said visualizing or therapeutic instrument secured thereto.
Claim 6
Dependent Claim
62 words
A catheter tube as set forth in any one of claims 1 to 3 wherein said manipulator means includes a closed bellows connected for communication with said instrument accommodating lumen at the proximal end and having said visualizing or therapeutic instrument secured at a proximal end thereof and a holder receiving said bellows for limiting the extent of expansion of said bellows.
Claim 7
Dependent Claim
78 words
A catheter tube as set forth in any one of claims 1 to 5 wherein said visualizing or therapeutic instrument is moved by said manipulator means over the range from the protective position at which the distal end of said visualizing or therapeutic instrument is within said instrument accommodating lumen to the position at which the distal end of said visualizing or therapeutic instrument projects 0 to 20 mm beyond the distal opening of said instrument accommodating lumen.
Claim 8
Dependent Claim
108 words
A catheter tube for use by inserting into a body cavity, comprising a tube body, at least one inflatable/contractible balloon attached around the outer peripheral wall of a distal portion of said tube body, a multi-purpose lumen defined in said tube body, open to the distal portion of said tube body, and adapted to accommodate a visualizing or therapeutic instrument for visualizing or medically treating the interior of the body cavity, said lumen allowing a fluid to flow between said visualizing or therapeutic instrument and the inner wall of said lumen, and a side aperture communicating the interior of said multi-purpose lumen with the interior of said balloon.
Claim 9
Dependent Claim
108 words
A catheter tube for use by inserting into a body cavity, comprising a tube body, at least one inflatable/contractible balloon attached around the outer peripheral wall of a distal portion of said tube body, a multi-purpose lumen defined in said tube body, open to the distal portion of said tube body, and adapted to accommodate a visualizing or therapeutic instrument for visualizing or medically treating the interior of the body cavity, said lumen allowing a fluid to flow between said visualizing or therapeutic instrument and the inner wall of said lumen, and a side aperture communicating the interior of said multi-purpose lumen with the interior of said balloon.
Claim 10
Dependent Claim
42 words
A catheter tube as set forth in claim 7 wherein said visualizing or therapeutic instrument is a bundle of optical fibers and the inner diameter of said multi-purpose lumen is 1.1 to 5.0 times the outer diameter of the optical fiber bundle.
Claim 11
Dependent Claim
125 words
A catheter tube for use by inserting into a body cavity, comprising a tube body, a first inflatable/contractible balloon attached around the outer peripheral wall of a distal portion of said tube body, a second inflatable/contractible balloon attached around the outer peripheral wall of said tube body at a predetermined spacing from the first balloon toward a proximal side, lumens in flow communication with the interior of said first and second balloons for inflating said balloons, a lumen for accommodating a visualizing or therapeutic instrument for visualizing or medically treating the interior of the body cavity between said first and second balloons, and a lumen open at the outer peripheral wall of said tube body between said first and second balloons for injecting a fluid.
Claim 12
Dependent Claim
125 words
A catheter tube for use by inserting into a body cavity, comprising a tube body, a first inflatable/contractible balloon attached around the outer peripheral wall of a distal portion of said tube body, a second inflatable/contractible balloon attached around the outer peripheral wall of said tube body at a predetermined spacing from the first balloon toward a proximal side, lumens in flow communication with the interior of said first and second balloons for inflating said balloons, a lumen for accommodating a visualizing or therapeutic instrument for visualizing or medically treating the interior of the body cavity between said first and second balloons, and a lumen open at the outer peripheral wall of said tube body between said first and second balloons for injecting a fluid.
Claim 13
Dependent Claim
53 words
A catheter tube as set forth in claim 9 wherein said tube body includes a bypass lumen communicating a first opening in the tube body on a distal side with respect to said first balloon and a second opening in the tube body on a proximal side with respect to said second balloon.
Claim 14
Dependent Claim
33 words
A catheter tube as set forth in claim 9 or 10 wherein said first balloon at the proximal side is spaced 1 to 100 mm from said second balloon at the distal side.
Claim 15
Dependent Claim
45 words
A catheter tube as set forth in any one of claims 1 to 11 wherein said balloon when inflated has a minimum diameter at least substantially equal to the maximum inner diameter of the body cavity into which the catheter tube is to be inserted.
References Cited (Backward Citations)
No citation records indexed.
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