Patent US3884220A successfully refreshed from Google Patents.
US3884220A
Expired / Lapsed
US
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Method for injecting X-ray contrast media for venography of the female pelvis
Assignee: Individual
•
Filing: 1973-09-21
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Granted: 1975-05-20
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Expires: 1993-09-21
Abstract
Abstract A method for injecting x-ray contrast media into the wall of the uterus a predetermined depth to make a record of the venous plexus system of the uterus. A straight rod probing member having a probing surface for probing against the uterine wall is inserted into the uterus and a piercing member arranged to be combined with a syringe is slidably disposed in the probing member and extended a predetermined amount from the probing surface when the probing surface contacts the uterine wall. X-ray opaque material is then injected into the spongy layer of the uterus and an X-ray record made of the passage of said opaque material through the venous plexus system.
Inventors
- 👤 Leo J Hartnett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:57
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0067; A61M25/0068; A61M25/0069; A61M31/00; A61M5/00; A61M5/007
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
150 words
The method of making a record of the venous plexus system of a uterus which comprises inserting into the uterus a tubular shaped instrument having a hollow core and a rounded probing end, probing with the instrument to locate the fundus with the rounded end, inserting a hollow needle having a piercing point and an opening through the center of said needle into the hollow core of the tubular instrument to penetrate the surface of the fundus, restraining the needle so that said penetration occurs only to a predetermined depth into but not through the wall of the uterus, injecting x-ray opaque material into the opening in the needle so that it passes through the needle into the spongy layer of said uterus and then exposing an x-ray film to record the passage of said x-ray opaque material through the venous plexus system of the uterus on the x-ray film.
Claim 2
Independent Claim
150 words
The method of making a record of the venous plexus system of a uterus which comprises inserting into the uterus a tubular shaped instrument having a hollow core and a rounded probing end, probing with the instrument to locate the fundus with the rounded end, inserting a hollow needle having a piercing point and an opening through the center of said needle into the hollow core of the tubular instrument to penetrate the surface of the fundus, restraining the needle so that said penetration occurs only to a predetermined depth into but not through the wall of the uterus, injecting x-ray opaque material into the opening in the needle so that it passes through the needle into the spongy layer of said uterus and then exposing an x-ray film to record the passage of said x-ray opaque material through the venous plexus system of the uterus on the x-ray film.
Claim 3
Dependent Claim
28 words
The method according to claim 1 in which a plurality of x-ray film pictures are taken at different times subsequent to the injection of the x-ray opaque material.
Claim 4
Dependent Claim
30 words
The method of claim 1 in which restraint of the needle is accomplished by limiting the extent to which the needle can project from the end of the tubular instrument.
Claim 5
Dependent Claim
33 words
The method of claim 3 in which the passage through the tubular instrument is plugged while penetrating the fundus but the plug is thereafter removed and x-ray opaque material injected through the passage.
Claim 6
Dependent Claim
20 words
The method of claim 4 in which the needle is locked in position when it reaches its predetermined projecting position.
Claim 7
Dependent Claim
20 words
The method of claim 2 in which the time interval between the first and second picture is approximately 10-15 seconds.
References Cited (Backward Citations)
US1213001A
Cited
US2283915A
Cited
US2700385A
Cited
US2712314A
Cited
US2740404A
Cited
US2850007A
Cited
US2880724A
Cited
US3048175A
Cited
US3380448A
Cited
US3356089A
Cited
US3281023A
Cited
US3404687A
Cited
US3630192A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-19 | 1978-11-18 | 1979-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-19 | 1982-11-18 | 1983-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-19 | 1986-11-18 | 1987-05-20 | $7700.00 | Window Closed / Lapsed |