Patent US3941119A successfully refreshed from Google Patents.
US3941119A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for introducing and guiding objects into body cavities and blood vessels
Assignee: Individual
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Filing: 1974-07-19
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Granted: 1976-03-02
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Expires: 1994-07-19
Abstract
Abstract Means for introducing and guiding objects such as liquids or instruments in cavities or blood vessels in the body of a patient, comprising a cannula for insertion in the body at the place where the object is to be introduced into the body, a gold chain for insertion into the cannula and penetration into the body under the effect of gravity, and a soft, flexible catheter of a dimension for passing through the cannula and over the flexible member when inserted and for permitting the flexible member to be drawn out after insertion of the catheter.
Inventors
- 👤 Mario Corrales
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:41
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/0105; A61M25/0108
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
135 words
Means for introducing a catheter into a selected portion of a patient, for conducting an object to such portion via the catheter, comprising: a. a cannula for insertion into an opening in the patient; b. a catheter slidably received in and externally guided by said cannula, said catheter having an inner flexible portion projecting inwardly beyond said cannula; and c. a freely flexible elongated member movable in response to gravity to such portion of a patient, and providing internal guidance for said inner flexible portion of said catheter, whereby said flexible member is moved by gravity through said cannula to the selected portion, then serves as a guide for insertion of said catheter to said selected portion, and is then removed from the catheter to enable the catheter to pass the object to said portion.
Claim 2
Dependent Claim
135 words
Means for introducing a catheter into a selected portion of a patient, for conducting an object to such portion via the catheter, comprising: a. a cannula for insertion into an opening in the patient; b. a catheter slidably received in and externally guided by said cannula, said catheter having an inner flexible portion projecting inwardly beyond said cannula; and c. a freely flexible elongated member movable in response to gravity to such portion of a patient, and providing internal guidance for said inner flexible portion of said catheter, whereby said flexible member is moved by gravity through said cannula to the selected portion, then serves as a guide for insertion of said catheter to said selected portion, and is then removed from the catheter to enable the catheter to pass the object to said portion.
Claim 3
Dependent Claim
29 words
Means according to claim 1, wherein the insertion end of the flexible member is provided with a weight which is no thicker than the thickness of the flexible member.
Claim 4
Dependent Claim
13 words
Means according to claim 1, wherein the catheter is made of silicon rubber.
Claim 5
Dependent Claim
33 words
Means according to claim 1, wherein the flexible member is provided at its other end with a filament of rigid material for guiding the catheter upon passing the same over the flexible member.
Claim 6
Dependent Claim
32 words
Means according to claim 1, wherein the flexible member is made wholly or partially of a magnetic material, whereby the gravitational fall of the flexible member may be assisted by magnetic forces.
Claim 7
Dependent Claim
20 words
Means according to claim 1, wherein the catheter is provided with a radio-opaque point, at least at its insertion end.
Claim 8
Dependent Claim
20 words
Means according to claim 1, wherein the flexible member is in the form of a chain, such as of gold.
Claim 9
Dependent Claim
22 words
Means according to claim 7, wherein the chain has a weight at its insertion end, such in the shape of an olive.
Claim 10
Dependent Claim
29 words
Means according to claim 7, wherein the flexible chain is of a type known per se which can be locked in an adopted position by means actuatable from without.
Claim 11
Independent Claim
97 words
A method for conducting an object to a selected portion of a patient, comprising: a. inserting a cannula into an opening in a patient; b. inserting a flexible elongated member through the cannula in response to gravity to such portion of the patient beyond the cannula; c. inserting a flexible catheter into the cannula in surrounding relation to the flexible elongated member by which elongated member the cannula is guided to such portion of the patient; d. withdrawing the flexible elongated member; and e. thereafter inserting the object into the catheter, to such portion of the patient.
Claim 12
Independent Claim
97 words
A method for conducting an object to a selected portion of a patient, comprising: a. inserting a cannula into an opening in a patient; b. inserting a flexible elongated member through the cannula in response to gravity to such portion of the patient beyond the cannula; c. inserting a flexible catheter into the cannula in surrounding relation to the flexible elongated member by which elongated member the cannula is guided to such portion of the patient; d. withdrawing the flexible elongated member; and e. thereafter inserting the object into the catheter, to such portion of the patient.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-02 | 1979-09-01 | 1980-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-02 | 1983-09-01 | 1984-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-02 | 1987-09-01 | 1988-03-02 | $7700.00 | Window Closed / Lapsed |