JP4078403B2 - Uterine tissue collection device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an intrauterine tissue collection device that sucks and collects intrauterine tissue.
[0002]
[Prior art]
In endometrial cancer examination, endometrial tissue is collected, and histology is performed using the collected tissue as a specimen. When collecting endometrial tissue for histological examination, a metal rod-like instrument called a son deculette is inserted into the uterus, and the tissue in the uterus is scraped out by a blade provided at the tip of the instrument ( Scraping) is performed (see, for example, Non-Patent Document 1).
[0003]
By the way, the uterus is inclined to the bladder side by so-called forward bending, and the uterine ostium (specifically, from the vagina to the inner uterine ostium) is bent. For this reason, it is often difficult to insert the instrument linearly into the uterine ostium, and the cervix can be fixed using a single forceps or the like, or the cervix can be pulled downward (foot side) to The instrument is inserted after the mouth is straightened.
[0004]
However, in endometrial tissue collection performed in this way, it is not only possible to collect a sufficient amount of tissue in one collection, it is necessary not only to perform multiple collections, but also to compare It takes a long time, and the patient suffers from the inconvenience.
[0005]
[Non-Patent Document 1]
National Cancer Center, “General cancer information, Explanation of various cancers Endometrial cancer 3. Diagnosis”, [online], updated on November 1, 2002, National Cancer Center Information Committee, Cancer Information Service [Search on November 26, 2002], Internet <URL: http://wwwinfo.ncc.go.jp/jp/ncc-cis/pub/cancer/010209.html>
[0006]
[Problems to be solved by the invention]
Dissolving such inconvenience, the present invention provides an intrauterine tissue collection device that can reduce patient pain and can collect a sufficient amount of intrauterine tissue as a specimen in a short time. With the goal.
[0007]
[Means for Solving the Problems]
In order to achieve this object, the present invention provides an intrauterine tissue collection device for sucking and collecting an intrauterine tissue, the tip having a length that can reach the uterus, and a suction port at the tip. A formed hollow tubule having flexibility, and a thin rod-like stylus formed by a material that is inserted into the tubule and is bendable and holds the bent shape when the tubule is inserted into the uterus. A tissue collection container to which the rear end of a capillary tube connected to the retlet is inserted into the uterus after being inserted into the uterus together with the stylet, and a negative pressure is applied to the container. e Bei and suction means for applying suction to the suction port of the capillary through the container, the thin tube is connected to the container by inserting its rear end to the joint member provided to the tissue collection container The joint member is prevented from coming off when a thin tube is inserted. And retaining means for holding, characterized Rukoto a retaining releasing means for releasing the retaining by該抜stop means.
[0008]
When collecting tissue in the uterus according to the present invention, first, the bent state of the uterine ostium is confirmed by internal examination, sonde examination, ultrasonic examination or the like. Next, the stylet is inserted into the capillary, and the stylet is bent in accordance with the previously confirmed bending of the uterine ostium before the capillary is inserted into the uterus. Since the thin tube has flexibility and the stylet is formed of a material that maintains a bent shape, the thin tube is maintained in a bent state in accordance with the bending of the stylet.
[0009]
The tubule is then inserted into the patient's uterus with the stylet. At this time, since the tubule is maintained in a bent state in accordance with the bending of the uterine ostium by the stylet, it becomes unnecessary to fix the neck and correct by pulling, and the vagina and neck without using a single forceps etc. Then, the tubule can be smoothly inserted into the uterus. Thereby, a patient's pain can be remarkably reduced.
[0010]
Thereafter, the stylus is removed from the tubule while maintaining the tubule inserted into the uterus. As a result, the tubule communicates with the uterus. Then, the rear end of the thin tube is connected to the tissue collection container. On the other hand, the suction means is connected to the tissue collection container, and the inside of the tissue collection container is set to a negative pressure by the suction means. Thereby, the tissue in the uterus is sucked from the suction port of the thin tube connected to the tissue collecting container and communicating with the uterus, and the tissue is smoothly accommodated in the tissue collecting container through the thin tube.
[0011]
In this way, according to the present invention, tissue in the uterus can be collected by suction without using a device such as a son deculet or a single forceps as in the prior art, so that the patient's pain can be reduced quickly. Tissue can be collected. In addition, since the tissue collected by suction is stored in the tissue collection container, a sufficient amount of tissue can be used as a specimen for histological examination.
[0013]
Further, according to the present invention, by providing the joint member, the rear end of the thin tube communicating with the uterus and the tissue collection container can be easily and quickly connected, and the retaining means is inadvertent. It is possible to prevent the disconnection and maintain the connection state reliably. In addition, since the capillary tube can be quickly extracted from the tissue collection container by the extraction release means, for example, it is possible to quickly cope with the insertion of the stylet in the reinsertion of the capillary tube.
[0014]
Further, in the present invention, the tissue collection container includes a bottomed cylindrical tissue container having an opening formed at the upper end and a closed lower end, and a cap detachably attached to the opening of the tissue container. The cap is provided with a first connection part for connecting the suction means and a second connection part for connecting the thin tube.
[0015]
According to the present invention, the air in the tissue accommodating portion is aspirated by the suction means via the first connecting portion, and the tissue from the thin tube is introduced into the tissue accommodating portion via the second connecting portion. At this time, since the first connection portion and the second connection portion are provided on the cap that is attached to the upper portion of the tissue storage portion, the tissue is not sent from the first connection portion toward the suction means. The tissue that has entered the tissue accommodating portion from the second connection portion can fall toward the bottom of the tissue accommodating portion and be stored in the tissue accommodating portion. Furthermore, the tissue removed from the tissue container and removed from the tissue container can be smoothly used for tissue diagnosis as a specimen.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory view showing an intrauterine tissue collection device of the present embodiment, FIG. 2 is an explanatory sectional view showing a capillary and a stylet, FIG. 3 is an explanatory sectional view showing a tissue collection container, and FIG. 4 is an intrauterine tissue. It is explanatory drawing which shows the collection | recovery state of the uterine tissue by a collection device.
[0017]
As shown in FIG. 1, an intrauterine tissue collection device 1 of this embodiment includes a tubule 2 to be inserted into the uterus, a stylet 3 to be inserted into the tubule 2, and a tissue collection container for containing the collected tissue. 4 is provided.
[0018]
As shown in FIG. 2, the thin tube 2 is formed into a tubular shape with a synthetic resin having flexibility, and has a suction port 5 on the side surface near the closed front end and an open rear end. The stylet 3 includes an insertion portion 6 to be inserted over the entire length of the thin tube 2 and a grip portion 7 provided at the rear end of the insertion portion and exposed from the rear end of the thin tube 2. The stylet 3 is formed of a wire-like metal such as stainless steel that can be bent and can maintain a bent shape.
[0019]
As shown in FIG. 3, the tissue collection container 4 includes a bottomed cylindrical tissue storage portion 8 and a cap 10 that is removably attached to an opening 9 formed in the upper portion of the tissue storage portion 8. I have. The cap 10 is coupled to the tissue accommodating portion 8 by being screwed onto a thread formed on the periphery of the opening 9 of the tissue accommodating portion 8. A connection tube 11 extending from a suction means (not shown) (for example, a syringe or a medical pump) is connected to the cap 10 via a first connection portion 12. In addition, the cap 10 includes a second connection portion 13 provided in parallel with the first connection portion 12, and a joint member 14 is provided in the second connection portion 13.
[0020]
As shown in FIG. 3, when the rear end of the thin tube 2 is inserted, the joint member 14 includes a lock claw 15 (prevention means) that presses against the peripheral wall of the thin tube 2 and locks in the removal direction, and the lock claw 15 and the thin tube 2 and an opening ring 16 (unlocking release means) for releasing the pressure contact of the lock claw 15 to the thin tube 2. The lock claw 15 is formed in a collet shape in which a plurality of claws 15 a are formed on the inner periphery and the diameter can be freely expanded, and the claw 15 a bites into and locks the thin tube 2 according to the insertion of the thin tube 2. When releasing the lock, the release ring 16 is pressed and intervened between the claw 15a and the thin tube 2, so that the lock claw 15 expands elastically and the claw 15a locks the thin tube 2. Is released.
[0021]
When performing endometrial tissue sampling for endometrial cancer examination using the intrauterine tissue sampling instrument 1 of the present embodiment having the above-described configuration, first, as shown in FIG. 3 is inserted, and the stylet 3 is bent in accordance with the bending of the uterine ostium (see the phantom line in FIG. 2). The narrow tube 2 is bent together with the stylet 3 by the bending of the stylet 3 and is held in a bent state by the stylet 3.
[0022]
Next, as shown in FIG. 4A, the tubule 2 is inserted into the uterus together with the stylet 3. At this time, since the thin tube 2 is bent according to the uterine ostium by the stylet 3, it can be smoothly inserted into the uterus along the bent state of the uterine ostium. This eliminates the need for a single forceps or the like that straightens the uterine ostium, and can greatly reduce the patient's pain.
[0023]
Next, the stylet 3 is removed from the capillary 2 while maintaining the capillary 2 inserted into the uterus. Thereby, the capillary 2 communicates with the uterus. Then, as shown in FIG. 3, the rear end of the thin tube 2 is connected to the joint member 14 of the tissue collection container 4. As described above, the coupling member 14 can be connected to the tissue collection container 4 very quickly because the lock claw 15 is pressed and pressed only by inserting the thin tube 2.
[0024]
On the other hand, the tissue accommodating portion 8 of the tissue collection container 4 is set to a negative pressure by the suction means via the first connection portion 12 of the cap 10, and by connecting the thin tube 2 as shown in FIG. 4 (b). A suction force is applied to the suction port 5 of the thin tube 2. Thereby, endometrial tissue is sucked from the suction port 5 of the tubule 2 in the uterus. The tissue x sucked from the suction port 5 falls from the second connection portion 13 into the tissue accommodating portion 8 via the joint member 14 of the cap 10. At this time, since the first connection part 12 from which air is sucked is located at the upper part of the tissue storage part 8 together with the second connection part 13, the tissue x that has fallen into the tissue storage part 8 becomes the first connection part 12 The tissue is not sucked away, and the tissue can be reliably accumulated in the tissue accommodating portion 8. Then, after a sufficient amount of tissue has accumulated in the tissue storage unit 8, the tissue storage unit 8 can be separated from the cap 10, and a sufficient amount of tissue can be used as a specimen for tissue diagnosis.
[0025]
Further, for example, even if a situation occurs in which the thin tube 2 is pulled out from the uterus after the thin tube 2 is connected to the tissue collecting container 4, the thin tube 2 is removed from the tissue collecting container 4 by operating the release ring 16 of the joint member 14. Since the stylet 3 can be inserted into the tubule 2 and reinserted into the uterus quickly, the pain of the patient can be reduced.
[Brief description of the drawings]
FIG. 1 is an explanatory view showing an intrauterine tissue collection device according to an embodiment of the present invention.
FIG. 2 is an explanatory sectional view showing a thin tube and a stylet. FIG. 3 is an explanatory sectional view showing a tissue collection container.
FIG. 4 is an explanatory view showing a state of tissue collection by an intrauterine tissue collection device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Intrauterine tissue collection instrument, 2 ... Thin tube, 3 ... Stylet, 4 ... Tissue collection container, 5 ... Suction port, 8 ... Tissue accommodating part, 9 ... Opening part, 10 ... Cap, 12 ... 1st connection part, DESCRIPTION OF SYMBOLS 13 ... 2nd connection part, 14 ... Joint member, 15 ... Lock nail | claw (prevention means), 16 ... Opening ring (prevention release means).

Claims (2)

An intrauterine tissue collection device for aspirating and collecting intrauterine tissue,
A flexible hollow capillary having a length at which the tip can reach the uterus and a suction port formed at the tip;
A thin rod-like stylet formed of a material that is inserted into the tubule and is bendable and holds the bent shape when the tubule is inserted into the uterus;
A tissue collection container to which the rear end of a capillary tube connected to the uterus after being inserted into the uterus together with the stylet is connected to the uterus;
E Bei and suction means for applying suction through the container to the suction port of the capillary with the container in a negative pressure,
The capillary is connected to the container by inserting the rear end thereof into a joint member provided in the tissue collection container,
該継hand member includes a retaining means for holding retaining when tubule is inserted, intrauterine tissue collecting device, characterized in Rukoto a retaining releasing means for releasing the retaining by該抜stop means. The tissue collection container includes a bottomed cylindrical tissue storage portion in which an opening is formed at the upper end and the lower end is closed, and a cap detachably attached to the opening of the tissue storage portion,
2. The intrauterine tissue collection device according to claim 1 , wherein the cap is provided with a first connection part for connecting suction means and a second connection part for connecting the thin tube .

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