JPH0654853A - Specimen recovering unit for medical treatment - Google Patents

Abstract

PURPOSE:To provide the device which facilitates the operation for sucking and recovering an excised piece (specimen), such as polyp, excised by endoscope polypectomy and can surely recover the excised end piece without damaging the specimen. CONSTITUTION:A filter 1 is mounted in the mouth part of a holder 21 and a cap 22 is fitted and integrated thereto. The outer periphery of the filter is pressed and fixed by the skirt side end of a cap. Tubes 26 are connected respectively to apertures 3, 4 on both sides and the cap side is connected to the endoscope and the holder side to a suction source. The specimen excised by the endoscope polypectomy is then sucked and recovered. Various structures in addition to the structure of installing a rotary collar 23 provided with a notch to the cap and providing the holder with a projection 24, then combining the holder and the cap are adoptable for the method for fixing the holder and the cap.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a specimen collecting unit for sucking and collecting a piece of tissue from the body,
More specifically, the present invention relates to a medical sample recovery unit for easily and surely recovering a sample excised from the body by means such as endoscopic polypectomy.

[0002]

2. Description of the Related Art Conventionally, endoscopic polypectomy has been often performed to endoscopically remove polyps generated in the digestive organs of the stomach, small intestine, large intestine and the like. In the endoscopic polypectomy, an endoscope is inserted according to a target site, a polyp is captured by a snare inserted through a forceps port, and a high-frequency current is passed to excise the polyp. Next, the excised and recovered excised piece is inspected to determine whether it is benign or malignant, which is useful for deciding the course of subsequent treatment or the like. Therefore, it is important to collect all the excised polyps and to collect the tissue of the polyps with the least damage.

[0003] In the polypectomy using colon fibers, which is often practiced at present, in general, a plurality of polyps are often present, and therefore it often takes time to collect excised pieces. Further, as a method for collecting the excised piece, a forceps for recovery is inserted from the forceps opening of the endoscope, and the polyp is sandwiched and pulled out of the body.At this time, for example, the excised piece is pinched too strongly or a small forceps is used. When it was pulled out through the mouth, there was a problem that the cell tissue might be destroyed.

On the other hand, for a relatively small cut piece, that is, a cut piece smaller than the forceps opening of the endoscope, a method of sucking and sucking from the forceps opening is also adopted. In this case, a trap such as a suction bottle is installed between the endoscope and the suction source, and if it is confirmed that the cut piece has entered it, suction is temporarily stopped and the cut piece is taken out. repeat. This operation requires only a small number of excised pieces, but when the number of polyps is large in some cases, the operation becomes very complicated, which puts a heavy burden on the practitioner and also increases the treatment time for the patient. Or the pain increased. Furthermore, when aspirating the cut piece,
There is also a drawback that it may be sucked into the suction source and lost, making it impossible to make a sufficient diagnosis.

[0005]

DISCLOSURE OF THE INVENTION The present invention solves such a problem in collecting and collecting a resected piece of tissue such as polyp in a conventional endoscopic polypectomy.
It has been made as a result of various studies, and its purpose is to provide a recovery means that can reliably recover excised pieces, that is easy to operate, and that reduces the burden on the practitioner.

[0006]

[Means for Solving the Problems] That is, the present invention is a means for capturing a sample excised by suction and excised by endoscopic polypectomy, wherein the roughness of the eye for capturing the sample is 0.2 to 0.2.
It has a 3mm mesh filter, an opening for connecting to a suction source, a holder for holding the filter, an opening for connecting to an endoscope, and is fitted integrally with the holder. And a cap for pressing and fixing the outer periphery of the filter, and an O-ring for air-tightly holding the fitting portion between the holder and the cap.

The present invention will be described in detail below with reference to the drawings. FIG. 1 is a view showing a sample recovery unit according to an embodiment of the present invention, and FIGS. 2 to 4 are views showing other embodiments.

The sample recovery unit according to the present invention, as shown in FIG. 1, holds a filter (1) at the mouth of a holder (11) and a cap (1) through an O-ring (2).
The basic structure is that the outer circumference of the filter is pressed and fixed by the hem side end of the cap, and the holder (1
A tube connected to a suction source is connected to the opening (3) of 1), and a tube connected to an endoscope is connected to the opening (4) of the cap (12) for use. Needless to say, even if these tubes are preliminarily adhered and fixed to the openings of the holder and the cap, they can be used without any problem.

The material of the holder and the cap constituting the sample recovery unit according to the present invention basically needs to be disposable, and therefore, inexpensive materials are desirable. As such a material, a polyvinyl chloride resin, an ABS resin, a polycarbonate resin or the like is preferable, but the material is not particularly limited thereto, and can be used for this purpose as long as it has appropriate workability or strength. Further, a transparent resin is more preferable so that the cut pieces can be visually confirmed to be captured by the filter.

The filter (1) has a shape as shown in FIG. 2 (b), has a diameter of 5 to 50 mm and a mesh of 0.2 to 3 mm.
The mesh-like shape is usually provided on the outer periphery with a frame for reinforcement. The material of the mesh may be resin or metal, but in the case of resin, as an example, polyester,
Polyamide, polypropylene, polyethylene and the like are suitable, and stainless steel having excellent corrosion resistance is suitable as the metal, but the metal is not particularly limited thereto. The size of the sample to be removed is generally 4 to 5 mm, so the mesh size, that is, the coarseness of the mesh is usually 0.2 to 3
The interval of mm is sufficient, and 0.5 to 1.5 mm is more preferable from the viewpoint of the size or operability of the sample to be extracted. 0.2
If it is smaller than mm, it is likely to be clogged, resulting in poor suction and collection efficiency. On the other hand, if it exceeds 3 mm, the excised sample will pass through the mesh, making it difficult to collect it.

The mesh filter may have a flat plate shape as shown in FIG. 2B, but in order to increase the effective area of the mesh, it has a three-dimensional mesh shape, for example, a bag shape or a conical shape. It is also possible. See also FIG.
By attaching a frame of a resin or metal ring around the mesh as in (b), the operability is further improved. 5-50 mm is suitable for the aperture of the mesh, that is, the overall aperture of the mesh, but it is 1 from the viewpoint of operability.
0-30 mm is more suitable.

In the embodiment shown in FIG. 1, the holder (1
1) and the cap (12) are simply fitted together, and no mechanism is provided to prevent detachment during use. Since the inside is depressurized by suction at the time of use, there is little risk of detachment, but it is possible to provide various mechanisms for preventing detachment.

FIG. 2 shows the outer periphery of the hem of the cap (22).
Attaching a rotating collar (23) with two or three hook-shaped notches (25) and holder (21)
In the example in which the protrusions (24) are provided at the positions corresponding to the notches (25) on the outer peripheral surface of the rim of the holder, the protrusions (24) of the holder are aligned with the notches (25) of the rotary collar, and gently twisted As a result, the cap (22) and the holder (21) are firmly fixed with one touch. FIG. 2 (c) shows a cap (22) and a holder (2
1) shows the combined state. Rotating collar (2
3) can be rotated along the outer circumference of the skirt of the cap (22), and has an advantage that when the tubes (26) connected to both sides of the sample collection unit are twisted, they can be easily returned to their original positions. .

FIG. 3 shows an example in which thread grooves are provided on the outer peripheral surface of the skirt portion of the cap (32) and the inner peripheral surface of the holder (31) near the mouth portion, respectively. The ring (2) is attached, and the holder (31) and the cap (32) are mutually rotated to fit and assemble. If you try to attach / detach the holder and the cap with long tubes connected to both ends, the tubes may be twisted.

FIG. 4 eliminates the difficulty of the example of FIG. 3 even with the screw type, and a rotary collar (43) having a thread groove on the inner peripheral surface is provided on the outer periphery of the skirt portion of the cap (42). In addition to being attached, a screw groove is also provided on the outer peripheral surface in the vicinity of the mouth of the holder (41). The hem side end of the cap (42) is inserted into the mouth of the holder (41), and the rotary collar (4
By rotating 3) along the outer circumference of the hem of the cap, the cap and the holder are firmly fixed.

The O-ring fits the holder and the cap,
It is for maintaining airtightness when assembled and used (suction), and a generally used one may be used. The position where it is arranged is not limited, and the position shown in FIG.
In the example shown in FIG. 2, the holder (11, 31) is mounted in the holder (11, 31), and the cap (12, 32) is pressed and sealed at the hem side end, whereas in the examples shown in FIGS. (2
(2, 42) is attached to the outer peripheral surface of the hem, which is covered with the rotating collars (23, 43), and the holder (21, 41)
It is designed to be pressed and sealed at the edge of the.

Next, a method of using the sample recovery unit according to the present invention will be described. It is connected to the rear end of the endoscope, the presence of a polyp is confirmed with the endoscope, and after excision with a snare, the excised piece is sucked through the endoscope. After confirming the capture of the excised piece (sample) on the filter of the collection unit, stop the suction and separate the holder and the cap to collect the sample captured on the filter, but continue the suction operation to collect the sample. There is nothing wrong with doing it. The sample is collected by repeating this operation.

[0018]

EFFECTS OF THE INVENTION By using the sample recovery unit of the present invention, the recovery of the sample extracted by the endoscopic polypectomy, which was conventionally complicated and uncertain, can be reliably performed without damaging the sample. In addition, since the operation is easy, the burden on the operator and the patient can be significantly reduced, which is suitable as a medical sample recovery device.

[Brief description of drawings]

FIG. 1 is a sectional view showing a sample recovery system according to an embodiment of the present invention.

2A and 2B are views showing another embodiment of the present invention, wherein FIG. 2A is a sectional view, FIG. 2B is a perspective view of a filter, and FIG. 2C is a side view in an assembled state.

FIG. 3 is a sectional view showing another embodiment of the present invention.

FIG. 4 is a sectional view showing another embodiment of the present invention.

[Explanation of symbols]

 1 Filter 2 O-ring 3, 4 Opening 11, 21, 31, 41 Holder 12, 22, 32, 42 Cap 23, 43 Rotating collar 24 Protrusion 25 Notch 26 Tube

Claims (4)

[Claims] 1. Resection by endoscopic polypectomy,
A means for capturing a sample extracted by suction, which has a mesh-shaped filter having a mesh size of 0.2 to 3 mm for capturing the sample, has an opening for connecting to a suction source, and holds the filter Holder, a cap that has an opening for connecting to the inside of the endoscope, is integrally fitted to the holder to press and fix the outer periphery of the filter, and the fitting portion between the holder and the cap is airtight. A medical sample recovery unit comprising an O-ring for holding the medical sample. 2. The unit for collecting specimens according to claim 1, wherein a rotating collar having two or three notches is provided on the outer periphery of the skirt of the cap, and the notch on the outer peripheral surface of the rim of the holder. A medical sample recovery unit, characterized in that protrusions are provided at positions corresponding to the above. 3. The sample collection unit according to claim 1, wherein a thread groove is provided on each of the outer peripheral surface of the skirt portion of the cap and the inner peripheral surface of the holder in the vicinity of the mouth portion. . 4. The sample recovery unit according to claim 1, wherein a rotating collar having a thread groove on the inner peripheral surface is attached to the outer circumference of the skirt portion of the cap, and a thread groove is also formed on the outer peripheral surface near the mouth portion of the holder. A medical sample collection unit characterized by being provided.