Body fluid collection device and endoscope system

1. A body fluid collection device configured to be used in combination with an endo scope having an insertion section configured to be inserted into a body of a patient, an insertion channel configured to be communicated with an opening formed in the distal end side of the insertion section and a suction section configured to suction an inside of the insertion channel from a suction port in communication with the insertion channel, the body fluid collection device comprising:

a longitudinal member having a lumen formed along a longitudinal axis and configured to be inserted through the insertion channel;

a flow path in which a suction is acted by the suction section of the endoscope, which is formed to bring the lumen of the longitudinal member in communication with the insertion channel in which the longitudinal member is inserted;

an accommodating section which is formed in the flow path, and accumulate a body fluid suctioned in the lumen by the suction section of the endoscope; and

a sealing member configured to seal a space between the longitudinal member inserted through the insertion channel and the inside of the insertion channel in a distal end side of the insertion channel so that a fluid does not flow from the distal end side to a proximal end side of the insertion channel, wherein:

the flow path brings an opening of a proximal end side of the lumen in communication with an opening of the proximal end side of the insertion channel,

a partition plate is provided at the flow path,

the accommodating section is partitioned with the flow path by the partition plate,

a first communication hole and a second communication hole penetrating in a plate thickness direction are formed in the partition plate,

the longitudinal member is inserted through the second communication hole, and

the opening of a proximal end portion of the lumen is disposed to be flush with a surface of an accommodating section side of the partition plate or disposed in the accommodating section.

2. The body fluid collection device according to claim 1 comprising:

a filter provided at the flow path and configured to allow passing of a gas and not to allow passing of a liquid.

3. The body fluid collection device according to claim 1 , wherein a filter configured to allow passing of a gas and not to allow passing of a liquid is provided at a hole formed in the flow path with no gap therebetween.

4. The body fluid collection device according to claim 1 , wherein the accommodating section has a first accommodating section and a second accommodating section being disposed in parallel in a direction crossing the longitudinal axis in the proximal end portion of the longitudinal member with respect to the opening of the proximal end portion of the lumen and partitioned by a wall section,

the wall section sides of the first accommodating section and the second accommodating section are opened, and the first accommodating section and the second accommodating section are in communication with each other.

5. The body fluid collection device according to claim 4 , wherein a discharge hole is formed in the first accommodating section, and

a plug member detachably attached to the discharge hole and which is capable of sealing the discharge hole is provided.

6. An endoscope system comprising:

an endoscope having an insertion channel and a suction section configured to suction the inside of the insertion channel from a suction port in communication with the insertion channel; and

the body fluid collection device according to claim 1 .

7. An endoscope system comprising:

an endoscope having an insertion channel and a suction section configured to suction the inside of the insertion channel from a suction port in communication with the insertion channel; and

the body fluid collection device according to claim 2 .