JP2001137248A - Sampler - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sampler capable of recognizing an X-ray-impermeable marker under fluoroscopy and of readily specifying the position of an absorber. SOLUTION: The sampler has an absorber unit 4 with the absorber 10 attached to the end of a flexible operating member and adapted for taking a sample, and a long flexible catheter 2 for passing through the absorber unit 4 so as to be free to move back and forth, with the end of the absorber unit 4 moving into and out of an opening in the end of the catheter 2. The absorber unit 4 is provided with an X-ray-impermeable marker portion 11 located near or inside the absorber.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sample collecting device for collecting a sample such as mucus in a body cavity, for example, in a bronchus.

[0002]

2. Description of the Related Art There are known sampling devices for collecting mucus and tissue in a body cavity. As described in Japanese Utility Model Publication No. Sho 56-31203, this kind of sample collecting instrument is configured such that a long flexible member having an absorber at the tip slides freely in a long flexible catheter. It has a structure.

[0003] When this sample collecting device is actually used, mucus is generally collected under an endoscope in combination with an endoscope. In the peripheral system of the bronchi, it is difficult to guide the endoscope itself to the peripheral part, so only the flexible catheter of the sampling device is guided to the target site,
A long flexible member having an absorber is protruded from the distal end of the flexible catheter, and the absorber is guided to the peripheral part of the bronchi to collect mucus.

However, only the long flexible member actually guides the distal end of the bronchus, and the absorber at the distal end of the flexible member is located in front of the flexible catheter far away from the distal end of the flexible catheter. Because it is located, it is difficult to determine the position of the absorber,
Sometimes it's hard to see everyone.

On the other hand, unpublished Japanese Patent Application No. 11-155063
In the sample collection device of No. 1, an X-ray opaque marker is attached near the tip of the catheter for guiding a long flexible member provided with an absorber at the tip, and the catheter is guided under X-ray fluoroscopy. It was implemented. However, since the sample collecting device disclosed in Japanese Patent Application No. 11-155063 positions the distal end of the catheter using an X-ray opaque marker, a long and thin flexible member protruding from the distal end of the flexible catheter is used. It is still difficult to determine the position of the absorber provided at the front end.

[0006]

As described above, it is difficult to determine the position of the absorber protruding from the tip of the catheter with a conventional sample collecting device, and it is difficult to determine the position even under X-ray fluoroscopy.

For example, if it is not possible to specify the position of the absorber to be guided at the time of collecting mucus on the peripheral side of the bronchi,
It becomes difficult to approach a desired diseased part, which hinders a clear diagnosis of a disease state.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and an object of the present invention is to identify a radiopaque marker under X-ray fluoroscopy and to easily specify the position of a specimen. Is to provide.

[0009]

According to the first aspect of the present invention, there is provided a collecting body unit in which a collecting body for collecting a sample is attached to a distal end of a long flexible operating member, and the collecting body unit includes: Having a long flexible catheter inserted so as to be able to advance and retreat, and a sample collection tool in which the tip of the sample body unit protrudes and retracts from the distal end opening of the catheter. A sample collection tool provided with an X-ray opaque marker portion.

[0010] According to a second aspect of the present invention, the long flexible operation member is constituted by connecting a shaft member provided on the distal end side with a collecting body at the distal end and an operation wire located on the proximal end side. The sample collecting tool according to claim 1, wherein the X-ray opaque marker portion is integrally formed by a resin tube containing a contrast agent in the shaft member on the side.

According to a third aspect of the present invention, there is provided the sample collection tool according to the first aspect, wherein a separate X-ray opaque marker member is attached to the long flexible operation member.

The marker can be identified under X-ray fluoroscopy, and the tip position of the absorber can be identified from the marker.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [First Embodiment] A mucus collecting tool for an endoscope according to a first embodiment of the present invention will be described with reference to FIGS.

(Construction) FIG. 1 is a perspective view showing an appearance of a mucus collecting tool 1 for an endoscope. The endoscope mucus collecting device 1 includes a long and flexible catheter 2 and a movable absorber unit 4 which is inserted into a hollow hole 3 of the catheter 2 so as to be able to advance and retreat.

The movable absorber unit 4 has a long operating member 9.
This operating member 9 is mechanically connected via a joint 8 to a shaft-like member 6 made of a semi-hard material located on the distal side and a relatively flexible operating wire 7 located on the proximal side. It is composed. The shaft-like member 6 is a solid rod-shaped semi-rigid member formed by winding paper in multiple layers.

Further, an absorber 10 made of a liquid absorbing material is fixedly attached to the distal end of the shaft-shaped member 6. This absorber 10 has a constant length L in the axial direction,
It is formed in a cone shape having a substantially spherical front end and a gradually narrowing rear end.

A marker portion 11 made of an X-ray opaque material such as stainless steel or platinum is fixedly attached to a position immediately after the absorber 10. The marker portion 11 has a pipe shape as shown in FIGS. 3A and 3B, and is placed on the outer periphery of the shaft-like member 6, and is caulked.
It is mechanically fixed by press-fitting, bonding or the like. FIG.
3A shows a complete pipe shape, and FIG.
The shape shown in (b) is a shape in which a slit 12 is provided partially.

The proximal end portion 15 of the operating wire 7 is formed in a loop shape by folding back so that the hand does not easily touch the cut wire end 16.

On the other hand, the catheter 2 is formed of a hollow flexible tube, and the diameter of the distal end portion is larger than the diameter of the proximal end portion. The large diameter portion accommodates the absorber 10. To form an absorbent storage section 17.

As shown in FIG. 4, the position of the joint 8 of the movable absorber unit 4 is such that when the movable absorber unit 4 is inserted into the channel 21 of the endoscope 20, the endoscope 2 is used.
It is configured so as not to be located at the zero distal bending portion 23.

(Operation / Effect) As shown in FIG. 5, when the mucus extractor 1 having the above-described configuration is inserted into the channel of the endoscope 20, the absorber 10 of the movable absorber unit 4 is connected to the absorber of the catheter 2. It is stored in the storage unit 17.

In a situation where the tip of the mucus collecting tool 1 is actually guided to a target portion and mucus is collected at the target portion, as shown in FIG. 6, the operation wire 7 is held and the movable absorber unit 4 is slid forward. And project from the distal end of the catheter 2.

At this time, if the absorber 10 cannot be captured in the field of view of the endoscope 20, the operation is performed under X-ray fluoroscopy. Then, since the marker portion 11 is made of an X-ray opaque member, the position of the marker portion 11 can be easily confirmed.

Since the absorber 10 has a fixed length L, the fixed length L is added to the identification position of the marker section 10 to make the tip position of the absorber 10 clear.

[Second Embodiment] A mucus collecting tool for an endoscope according to a second embodiment of the present invention will be described with reference to FIG.

(Construction) In this embodiment, as shown in FIG. 7, the marker portion 11 is formed of an X-ray opaque paint 25, and the X-ray opaque paint 25 is placed on the outer periphery of the shaft-like member 6 from its distal end. It is applied with a certain length. The marker section 11 is provided partially or continuously. Except for this point, the other configuration is the same as the configuration of the above-described first embodiment.

(Operation / Effect) The operation of this embodiment is the same as that of the first embodiment. According to this embodiment, since the diameter of the shaft-shaped member 6 is not increased, the outer diameter of the sampling tool itself can be suppressed. Further, since the marker portion 11 is not a hard member, the flexibility of the shaft-shaped member 6 is not impaired.

[Third Embodiment] A mucus collecting tool for an endoscope according to a third embodiment of the present invention will be described with reference to FIGS.

(Configuration) In this embodiment, as shown in FIG.
The shaft-like member 6 is constituted by a resin rod 30 containing a contrast agent,
The portion from the joint 8 to the inside of the absorber 10 is positioned as the marker portion 11 and constitutes a long X-ray opaque portion.

The resin rod 30 is a solid rod as shown in FIG. 9 (a) or a hollow rod as shown in FIG. 9 (b).
Are formed with irregularities 32 in order to secure a coupling holding force with the absorber 10. The unevenness 32 here has a shape in which flanges and grooves are formed alternately in the axial direction. Except for this point, the other configuration is the same as the configuration of the above-described first embodiment.

(Operation / Effect) In the first embodiment, the position of the absorber 10 is determined by adding a fixed length L from the marker section 11, but in the present embodiment, the distal end of the marker section 11 is Since it is at the same position as the distal end of the absorber 10, it is only necessary to determine the tip of the X-ray opaque portion.

Other operations are the same as those of the first embodiment. According to the present embodiment, since the diameter of the shaft-shaped member 6 is not increased, the outer diameter of the device itself can be suppressed. The visibility is improved because the shaft-shaped member itself is an X-ray opaque marker. [Fourth Embodiment] A mucus collecting tool for an endoscope according to a fourth embodiment of the present invention will be described with reference to FIG.

(Configuration) As shown in FIG.
A resin tube 35 containing a contrast agent, such as a Teflon tube, is provided on the outer periphery of the shaft member 6 located on the rear side of the absorber 10.
And this region is used as the marker portion 11. The resin tube 35 is fixed to the shaft-shaped member 6 by press-fitting or bonding, and has a structure in which the resin tube 35 is press-fitted with a heat-shrinkable tube to form the marker portion 11. Other configurations are the same as those of the first embodiment.

(Operation and Effect) The operation of this embodiment is the same as that of the first embodiment. According to the present embodiment, the length of the X-ray opaque marker portion 11 can be freely set.

[0035]

As described above, according to the present invention, even if the affected part is not visually recognized directly under the endoscope at the time of sampling,
The position of the specimen can be easily recognized under X-ray fluoroscopy.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the entirety of a mucus collecting tool for an endoscope according to a first embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of the mucus collecting tool for an endoscope.

FIG. 3 is a perspective view showing a marker part of the mucus collecting tool for an endoscope.

FIG. 4 is a longitudinal sectional view of a use state in which the endoscope mucus collecting device is inserted through an endoscope.

FIG. 5 is a vertical cross-sectional view of the distal end portion of the endoscope mucus collecting device in a state where the absorber of the movable absorber unit is housed in the absorber housing portion of the catheter.

FIG. 6 is an operation explanatory view when the operation wire of the mucus collecting tool for an endoscope is advanced and retracted.

FIG. 7 is a longitudinal sectional view of a distal end portion of an endoscope mucus collecting device according to a second embodiment of the present invention.

FIG. 8 is a perspective view of a movable absorber unit of a mucus collecting tool for an endoscope according to a third embodiment of the present invention.

FIG. 9 is a perspective view of a shaft-shaped member of a movable absorber unit of the endoscope mucus collecting device.

FIG. 10 is a longitudinal sectional view of a movable absorber unit of a mucus collecting tool for an endoscope according to a fourth embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF REFERENCE NUMERALS 1: mucus collection device for endoscope, 2: catheter, 3: hollow hole of catheter, 4: movable absorber unit, 6: shaft-shaped member, 7: operation wire, 10: absorber, 11: marker part, 20 …Endoscope.

Claims (3)

[Claims] 1. A collecting body unit in which a collecting body for collecting a sample is attached to a distal end of a long flexible operating member, and a long flexible catheter into which the collecting body unit is inserted so as to be able to advance and retreat. A sample collection tool in which the tip of the sample body unit protrudes and sinks from the distal end opening of the catheter, wherein the sample body is provided with an X-ray opaque marker portion in the vicinity of the sample body or in the sample body. Collection tool. 2. A long flexible operating member is formed by connecting a distal shaft member provided with a sampling body at a distal end thereof to an operating wire located at a proximal end thereof, wherein the distal shaft member is The sample collection tool according to claim 1, wherein the X-ray opaque marker portion is integrally formed by a resin tube containing a contrast agent. 3. The sample collection tool according to claim 1, wherein a separate X-ray opaque marker member is attached to the long flexible operation member.