Puncture aspiration method and puncture aspiration device

Abstract

The invention provides a puncture aspiration method and a puncture aspiration device. A puncture needle (2) is provided with: an outer tube (11) which has a front end having an opening edge formed in a blade-like shape; and a stopper member (12) which has a front end disposed within the outer tube (11) at a position separated from the front end of the outer tube (11) by a predetermined distance. A sample containing section (13) is formed between the front end of the stopper member (12) and the front end of the outer tube (11). An air flow passage (14) is formed within the outer tube (11) so as to surround the stopper member (12). A suction means (21) is connected to the base end side of the outer tube (11). The suction means (21) is connected to and made to communicate with the sample containing section (13) via the air flow passage (14).

Description

technical field [0001] The present invention relates to the collection of tissues, etc., from predetermined parts of organs or organs to be inspected in the body under the guidance of ultrasonic images, optical endoscopic images, or ultrasonic endoscopic images, etc. A suction and puncture method for examining a sample and a device used in the suction and puncture method, in more detail, relate to a method that can safely extract a tissue or the like at a predetermined site with a simple operation, and can extract any tissue without damaging the tissue. Aspiration and puncture method and aspiration and puncture device for large and small tissues. [0002] This application claims priority based on Japanese Patent Application No. 2010-89331 for which it applied in Japan on April 8, 2010, and uses the content here. Background technique [0003] Generally, in a method of extracting tissues, etc., from internal organs, etc., of an inspection target, there is a method of puncturi...

AI Technical Summary

Problems solved by technology

In addition, sometimes it is almost impossible to extract the sample with one round trip (stroke) of the tip of the puncture needle

Therefore, after puncturing a predetermined part of the target organ, it is necessary to make the puncture needle (outer cylinder) reciprocate (stroke) 15 to 20 times around the part in a manner parallel to the direction of the puncture needle. Problems that require labor and the piercing time becomes longer

[0018] (2) In addition, in the above-mentioned puncture operation of 15 to 20 times, most of the samples cannot be extracted enough. In order to extract the desired amount of samples, Sometimes it is necessary to repeat the operation several times (usually three or four)

As a result, most of the extracted tissue is destroyed by suction impact, etc., and many of them become tiny specimens, and there is a problem that the handling of the specimens becomes difficult in subsequent preparation of tissue specimens.

In addition, more tissue damage caused by suction pressure can be seen, which sometimes brings obstacles to pathological diagnosis

Therefore, in most cases, messy cells are extracted to make specimens, which cannot become enough specimens for tissue diagnosis, and diagnosis is only based on the judgment of cell diagnosis

[0020] (4) In order to process the extracted sample and confirm whether the extraction is complete, it is desirable to perform cell diagnosis quickly, but since the extracted small cells are scattered, it is difficult to judge whether the extraction can be completed as a tissue with the naked eye , and it is difficult to extract in a sample shape that can satisfy tissue diagnosis, therefore, it is recommended that clinical laboratory technicians, pathologists, etc. be present, and there is a problem that it takes manpower and man-hours

[0022] (1) Among the puncture needles for Trucut on the market, the length of the above-mentioned tray part is as long as 20mm, and the length of the tray part cannot be changed as required

Therefore, it is not possible to perform operations such as extracting a sample of a desired size at will. The target organs and organs for tissue extraction are, for example, 20 mm to 30 mm or more, and are limited to a size larger than a certain size. Extract tissue, extract tissue larger than its size, etc.

[0023] (2) The puncture needle for Trucut on the market is an automatic type in which the outer cylinder is forcibly ejected from the tip when the button on the base end side is pressed. When the target organ is very hard, the ultrasonic endoscope may be pushed back to the hand due to the reaction force of the puncture

In addition, since the outer diameter of the puncture needle is thick (19G), the operability of the puncture needle deteriorates depending on the twisting of the scope, angle operation, operation of the forceps erecting device, or the position of the target organ. timing may deviate from

[0024] (3) It may be due to the complex structure of setting the inner needle in the outer cylinder and forming the tray part on the inner needle, compared with the suction method used Puncture needles are, for example, 10,000 to 30,000 yen, and puncture needles for Trucut are expensive, for example, around 50,000 yen

[0026] However, as mentioned above, the sample extracted by the aspiration method is the main pathological judgment method, and cytodiagnosis is the main method, although the probability is extremely low, but Tissue diagnosis can only be performed when a tissue sample that can satisfy the tissue diagnosis is extracted

Therefore, it cannot be said that it has fully functioned as a device for tissue diagnosis.

On the other hand, in the Trucut method, tissue diagnosis is the main purpose, but based on the above reasons, the scope of its application is limited by the size of the target organ and the position of the target organ that can be displayed by an ultrasonic endoscope. are limited, so the Trucut method is not widely used

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