Method for injecting X-ray contrast media for venography of the female pelvis
First Claim
1. 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.
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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.
26 Citations
6 Claims
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1. 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.
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2. 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.
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3. 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.
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4. 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.
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5. The method of claim 4 in which the needle is locked in position when it reaches its predetermined projecting position.
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6. The method of claim 2 in which the time interval between the first and second picture is approximately 10-15 seconds.
Specification