US3687142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catheter
Assignee: Individual
•
Filing: 1970-10-06
•
Granted: 1972-08-29
•
Expires: 1990-10-06
Abstract
Abstract A catheter adapted for introduction into difficulty accessible regions of the human body comprising a catheter tube and a flexible tube adapted for displacement within the catheter tube and for protrusion from the distal end of the catheter tube. A radio-opaque embolus is attached to the distal end of the flexible tube by means of a flexible thread. When the catheter is inserted into the body in the vicinity of the required region, the embolus is directed into the required region by the flow of bloodstream together with gravity forces, carrying with it the flexible tube. Suitable fluid can then be injected into the required region through the catheter and apertures formed in the flexible tube.
Inventors
- 👤 Saul Leibinzohn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:19
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/0105; A61M25/0125; A61M25/0108
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
135 words
A catheter comprising a catheter tube having first and second ends with a lumen interconnecting said ends, a flexible tube carried for longitudinal displacement within the catheter tube and for protrusion from the first end thereof, an at least partially radio-opaque embolus, a highly flexible thread interconnecting said embolus and the end of the flexible tube adapted to protrude from the catheter tube, said embolus being fixedly attached to said thread, said catheter tube and said flexible tube being provided with means for preventing separation of the flexible tube from the first end of the catheter tube, and displacing means coupled to the opposite end of the flexible tube for moving it through the catheter tube so as to free the embolus and flexible tube for limited longitudinal motion with respect to the catheter tube.
Claim 2
Dependent Claim
135 words
A catheter comprising a catheter tube having first and second ends with a lumen interconnecting said ends, a flexible tube carried for longitudinal displacement within the catheter tube and for protrusion from the first end thereof, an at least partially radio-opaque embolus, a highly flexible thread interconnecting said embolus and the end of the flexible tube adapted to protrude from the catheter tube, said embolus being fixedly attached to said thread, said catheter tube and said flexible tube being provided with means for preventing separation of the flexible tube from the first end of the catheter tube, and displacing means coupled to the opposite end of the flexible tube for moving it through the catheter tube so as to free the embolus and flexible tube for limited longitudinal motion with respect to the catheter tube.
Claim 3
Dependent Claim
30 words
A catheter according to claim 1, wherein said displacing means comprises a stylet wire which extends through the catheter and is coupled to the inner end of the flexible tube.
Claim 4
Dependent Claim
20 words
A catheter according to claim 2, wherein said stylet wire is spiralled about the inner end of the flexible tube.
Claim 5
Dependent Claim
51 words
A catheter acCording to claim 2, wherein said stylet wire is coupled to the flexible tube by means of a double collar structure one component of which is clamped to the end of the flexible tube and the other component of which is crimped to the end of the stylet wire.
Claim 6
Dependent Claim
21 words
A catheter according to claim 2, wherein said thread extends through the flexible tube and is secured to the stylet wire.
Claim 7
Dependent Claim
16 words
A catheter according to claim 1, wherein said embolus is of spherical, discoid or cylindrical shape.
Claim 8
Dependent Claim
14 words
A catheter according to claim 1, wherein said embolus is formed of stainless steel.
Claim 9
Dependent Claim
13 words
A catheter according to claim 1, wherein said embolus is formed of platinum.
Claim 10
Dependent Claim
16 words
A catheter according to claim 1, wherein said embolus is formed of a radio-opaque soluble material.
Claim 11
Dependent Claim
22 words
A catheter according to claim 1, wherein said embolus is formed of a deformable hollow material adapted to contain a contrast medium.
Claim 12
Dependent Claim
41 words
A catheter according to claim 1, wherein said flexible tube, embolus and thread are formed as an integral whole, the embolus being hollow and being adapted to have a contrast medium introduced therein via a bore formed in the connecting thread.
Claim 13
Dependent Claim
17 words
A catheter according to claim 1, wherein outlet apertures or slits are formed in the flexible tube.
Claim 14
Dependent Claim
47 words
A catheter according to claim 1, wherein said catheter tube is formed of two parts, said flexible tube being adapted to project from a first part, and the second part being provided with a valve inlet means, connecting means being provided for connecting said two parts together.
Claim 15
Dependent Claim
41 words
A catheter according to claim 13, wherein said connecting means comprises a pair of tubular metal coupling elements having respectively tapering outer and inner walls adapted to fit one within the other and to be respectively coupled to said tube parts.
Claim 16
Dependent Claim
35 words
A catheter tube according to claim 13, wherein said connecting means is provided with a flexible sleeve having a skirt portion adapted to be clipped so as temporarily to close said one catheter tube part.
Claim 17
Dependent Claim
46 words
A catheter according to claim 13, wherein said valve inlet means is constituted as a tubular T-piece, having an inlet limb which communicates via an inlet port with a limb coupled to the second catheter tube part, means being provided for unidirectionally closing said inlet port.
References Cited (Backward Citations)
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US3435826A
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US3500820A
Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |