Surgery – Means for introducing or removing material from body for... – Material introduced into and removed from body through...
Patent
1988-09-07
1990-06-19
Kruter, Jerome L.
Surgery
Means for introducing or removing material from body for...
Material introduced into and removed from body through...
664 35, 664275, 128758, A61M 100
Patent
active
049350030
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates generally to devices for early-stage abortion and more specifically to a gynecological aspiration tip.
The invention can find application in gynecological practice for early-stage abortion, as well as for aspiration of the contents out of the uterine cavity in cases of various pathological changes of the latter, e.g, in the case of hyperplastic changes in the endometrium, suspicion for endometrial or cervical carcinoma, infertility, or cervical polyps.
The present invention is instrumental in a more complete aspiration of the uterine cavity contents without inflicting any painful syndrome upon the patient.
PRIOR ART
Two types of the state-of-the-art gynecological aspiration tips are heretofore available, i.e., aspiration tips with a scraping (curetting) effect and those operating on the vacuum aspiration principle alone.
In the former case the tip is essentially a cylindrical tube with the distal end closed and two perforations in the lateral walls thereof, a sharp triangular projection being provided above one of the perforations capable of exerting a curetting effect.
The aforediscussed known device, while curetting the uterine walls, inflicts injury upon the nerve endings located in the uterine walls, thus causing subsequent morbid sequels.
In the latter case the tip is likewise shaped as a cylindrical tube with its distal end closed or open and perforations in the lateral walls but devoid of a sharp projection. Such a tip is for extraction of the uterine contents by the pure aspiration method.
However, perforations in the lateral tip walls are liable to get clogged with pieces of mucosa, which stop up the tip and hence cause the surgical procedure to cease, whereas repeated insertion of the tip into the uterine cavity might bring the infection into the latter.
One prior-art aspiration tip (U.S., A, 3,965,901) is known to be a flexible cylindrical tube having an open face end and a T-slot in the lateral wall at the distal end thereof, said slot communicating with the tube interior. The proximal end of the tube is adapted to communicate with a source of vacuum.
The aforesaid known device is featured by the fact that, upon introduction of the tip into the uterine cavity and establishing a subatmospheric pressure therein, the uterine mucosa (endometrium) that has changed due to pregnancy or a pathological process, makes it way through the slot of the tip into its interior and further into the receptacle for aspirate collection.
However, in the case of aspiration with the known tip the slot might get clogged and stopped up with large pieces of the endometrium, which results in discontinuation of the surgical procedure, compels one to withdraw the tip from the uterine cavity and clean the clogged slot. Repeated introduction of the tip into the uterine cavity might contribute to its infecting with the secondary morbid complications.
The aforesaid known device is also characterized by the fact that a contact between the tip slot and the endometrium is established during aspiration at a preset vacuum, whereby painful sensations may occur owing to an adequately large contact area.
DISCLOSURE OF THE INVENTION
The invention has for its object to provide a gynecological aspiration tip whose construction arrangement makes it possible to perform more perfect extraction of the gravidic or pathologically changed endometrium without forced interruptions of the surgical procedure, thus preventing the uterus from being infected.
The aforesaid object is accomplished due to the fact that in a gynecological aspiration tip shaped as a flexible cylindrical hollow tube having a slot in its wall, said slot communicating with the hollow interior of the tube and located at the tube distal end, while the proximal tube end is adapted to communicate with a source of vacuum, according to the invention, the slot is open at the face of the tube distal end.
Provision of the tip with such a slot ensures the maximum area of contact of the slot with the uterine walls, which makes it possi
REFERENCES:
patent: 2531730 (1950-11-01), Henderson
patent: 3661144 (1972-05-01), Jensen et al.
patent: 3965901 (1976-06-01), Penny et al.
patent: 4451257 (1984-05-01), Atchley
patent: 4504266 (1985-03-01), Harle
Gainutdinova Raisa V.
Manuilova Irina A.
Petrova Vera M.
Zhukovsky Yakov G.
LandOfFree
Gynecological aspiration tip does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Gynecological aspiration tip, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gynecological aspiration tip will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2258070