US4717379A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catheter, probe or similar device
Assignee: Mediplast AB
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Filing: 1985-07-01
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Granted: 1988-01-05
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Expires: 2005-07-01
Abstract
Abstract A catheter, probe or a similar device is intended to be inserted into a body cavity. The catheter (1) is double-walled over a substantial portion of its length, at which the inner wall (5) on the outside and/or the outer wall (6) on the inside is provided with longitudinal partitions for forming separate longitudinal passages (3) between the walls (5,6). The passages (3) are perforated from the outside of the catheter by a plurality of capillary holes (4). Into at least some of the passages (3) a fluid, i.e. compressed air or liquid, or a cream or gel-like substance, is intended to be inserted for obtaining a lubrication of the mucous membranes of the body cavity during the insertion. Thus, irritation of the mucous membranes of the body cavity is avoided during the insertion and longer insertion periods are permitted without risk of infection.
Inventors
- 👤 Erik Ekholmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:06
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0067; A61M25/0068; A61M25/007; A61M25/0021; A61M25/0023; A61M25/0026; A61M2025/0036; A61M2025/004; A61M25/0043; A61M2025/0062; A61M25/0009
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
140 words
A catheter having two ends and being adapted to be inserted at one end into a body cavity, said catheter comprising: an inner tube and an outer coaxial tube, both of said tubes having exterior and interior surfaces; longitudinal partitions extending between the exterior surface of the inner tube and the interior surface of the outer tube; said longitudinal partitions defining separate longitudinal passages between the exterior surface of the inner tube and the interior surface of the outer tube; said outer surface of the outer tube having a plurality of capillary holes extending therethrough and communicating with the longitudinal passages; and at least some of the longitudinal passages being adapted to be attached to a pressure source means for supplying fluid which is admitted to penetrate the plurality of capillary holes into the body cavity outside of the catheter.
Claim 2
Dependent Claim
140 words
A catheter having two ends and being adapted to be inserted at one end into a body cavity, said catheter comprising: an inner tube and an outer coaxial tube, both of said tubes having exterior and interior surfaces; longitudinal partitions extending between the exterior surface of the inner tube and the interior surface of the outer tube; said longitudinal partitions defining separate longitudinal passages between the exterior surface of the inner tube and the interior surface of the outer tube; said outer surface of the outer tube having a plurality of capillary holes extending therethrough and communicating with the longitudinal passages; and at least some of the longitudinal passages being adapted to be attached to a pressure source means for supplying fluid which is admitted to penetrate the plurality of capillary holes into the body cavity outside of the catheter.
Claim 3
Dependent Claim
40 words
The catheter according to claim 1 wherein: other longitudinal passages are adapted to be connected to a suction source means for draining fluid from the body cavity outside of the catheter through the plurality of capillary holes in communication therewith.
Claim 4
Dependent Claim
23 words
The catheter according to claim 1 wherein: said outer surface of the outer tube has chamfered edges around the plurality of capillary holes.
Claim 5
Dependent Claim
23 words
The catheter according to claim 1 wherein: said outer surface of the outer tube has recessed cavities around the plurality of capillary holes.
Claim 6
Dependent Claim
27 words
The catheter according to claim 1 wherein: said outer tube is shorter than said inner tube at the other end of the two ends of the catheter.
Claim 7
Dependent Claim
33 words
The catheter according to claim 5, further comprising: means, attached to at least some of the longitudinal passages, for connecting the pressure source means to the shorter outer tube around the inner tube.
References Cited (Backward Citations)
US2470665A
Cited
US2548602A
Cited
US2614563A
Cited
US2930378A
Cited
US3598127A
Cited
US3981299A
Cited
US4186745A
Cited
US4406656A
Cited
WO1985000526A1
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 |