Patent US4717387A successfully refreshed from Google Patents.
US4717387A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catheter
Assignee: Sumitomo Electric Industries Ltd
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Filing: 1986-06-25
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Granted: 1988-01-05
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Expires: 2006-06-25
Abstract
Abstract A catheter or fiberscope for the inspection of an intracardiac area or the like is proposed which has a flexible tube and a balloon mounted on its end. The flexible tube is divided into four passageways, i.e. two fluid passageways and an illumination light transmission line and an image transmission line. A flush of a physiological saline solution is spouted from one fluid passageway outside of the balloon to form a visual field without interfering natural movement of the area to be inspected. A catheter for dissolving a thrombus is also proposed which has a porous tube, instead of a balloon, at its end portion.
Inventors
- 👤 Kiyoshi Inoue
- 👤 Keiichi Kuwaki
- 👤 Koichi Tsuno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:01
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/012; A61B1/018; A61B1/00064; A61B1/00071; A61B1/0008; A61B1/00082; A61B1/015; A61B1/313; A61B1/3137; A61B17/00; A61B17/22; B; B05; B05B; B05B11/00; B05B11/01; B05B11/06; A61B2017/22038; A61B2017/22051; A61B2017/22082; A61B2017/22084; A61B18/00; A61B2018/00982; A61B90/00; A61B90/30; A61B2090/306
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
122 words
A catheter for insertion into a living body comprising a flexible tube having a fluid passageway for a first fluid, means at the rear end portion of said tube for providing a connection to means for admitting a first fluid to said fluid passageway and means disposed at a front end portion of said flexible tube for allowing said first fluid fed through said fluid passageway from said rear end portion to eject into the living body to directions other than the axial direction as well as the axial direction, said flexible tube comprising a porous tube covered with a pressure-resistant covering except for end portion thereof, said means at the front end comprising the exposed end portion of said porous tube.
Claim 2
Dependent Claim
122 words
A catheter for insertion into a living body comprising a flexible tube having a fluid passageway for a first fluid, means at the rear end portion of said tube for providing a connection to means for admitting a first fluid to said fluid passageway and means disposed at a front end portion of said flexible tube for allowing said first fluid fed through said fluid passageway from said rear end portion to eject into the living body to directions other than the axial direction as well as the axial direction, said flexible tube comprising a porous tube covered with a pressure-resistant covering except for end portion thereof, said means at the front end comprising the exposed end portion of said porous tube.
Claim 3
Dependent Claim
16 words
The catheter as claimed in claim 1, wherein said first fluid is a thrombus dissolving agent.
Claim 4
Dependent Claim
16 words
The catheter as claimed in claim 1, wherein said porous tube is made of fluoroethylene resin.
Claim 5
Dependent Claim
17 words
The catheter as claimed in claim 1, wherein said pressure-resistant covering is made of fluororubber or silicicrubber.
Claim 6
Dependent Claim
108 words
The catheter comprising a flexible tube having a fluid passageway for a first fluid, and means disposed at a front end portion of said flexible tube for allowing said first fluid fed through said fluid passageway to eject to directions other than the axial direction as well as the axial direction, said flexible tube comprising a porous tube covered with a pressure-resistant covering except for end portion thereof, said means at the front end comprising the exposed end portion of said porous tube, and a guide wire having its rear end inserted into said front end of said porous tube and secured thereto so as to protrude therefrom.
Claim 7
Dependent Claim
108 words
The catheter comprising a flexible tube having a fluid passageway for a first fluid, and means disposed at a front end portion of said flexible tube for allowing said first fluid fed through said fluid passageway to eject to directions other than the axial direction as well as the axial direction, said flexible tube comprising a porous tube covered with a pressure-resistant covering except for end portion thereof, said means at the front end comprising the exposed end portion of said porous tube, and a guide wire having its rear end inserted into said front end of said porous tube and secured thereto so as to protrude therefrom.
Claim 8
Dependent Claim
15 words
The catheter as claimed in claim 5, wherein said guide wire has a round end.
References Cited (Backward Citations)
US1687472A
Cited
US2218738A
Cited
US2759209A
Cited
US3369543A
Cited
US3614245A
Cited
US3938898A
Cited
US3965909A
Cited
US4165942A
Cited
US4183328A
Cited
US4578055A
Cited
US4480940A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-01-04 | 1991-07-06 | 1992-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-04 | 1995-07-06 | 1996-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-04 | 1999-07-06 | 2000-01-05 | $7700.00 | Window Closed / Lapsed |