Endoscope system

Abstract

In the endoscope system 1, a tissue recovery device 3 that recovers tissue is directly mounted on an endoscope 2. The tissue recovery device 3 has a filter portion, and the filter portion is inserted so as to traverse the conduit of the suction conduit 20 that passes inside the endoscope operation portion 10. The suction conduit 20 opens to the distal end portion of the endoscope insertion portion 11, and the working channel 23 branches off from the branch portion 22 that is provided further on the distal end side than the insertion location of the tissue recovery device 3. With this endoscope system, it is possible to reduce operational burden of the operator with regard to the endoscope system that includes the tissue recovery device that recovers tissue.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a drawing showing an outline configuration of the endoscope system according to an embodiment of the present invention.

FIG. 2 is a partially enlarged cross section of FIG. 1, showing the outline configuration of the tissue recovery device.

FIG. 3 is a drawing showing an outline configuration of the endoscope system.

FIG. 4 is a drawing showing the state of the tissue recovery device mounted on the endoscope via the attachment.

FIG. 5 is a perspective view of the attachment.

FIG. 6 is a view from the arrow A in FIG. 5.

FIG. 7 is a sectional drawing showing the constitution of the tissue recovery device.

FIG. 8 is a sectional view of the tissue recovery device.

FIG. 9 is a sectional view showing the tissue recovery case when the tissue recovery filter is removed.

FIG. 10 is a drawing showing the constitution of the tissue recovery filter.

FIG. 11 is a drawing from the arrow C in FIG. 10 showing the shape of a plate.

FIG. 12 is a sectional view showing the state of the tissue recovery device mounted on the attachment.

FIG. 13 is a drawing showing the state of plug bodies mounted on the attachment.

FIG. 14 is a drawing showing the plug body in the attachment in which a bypass conduit is not opened to the side surface.

FIG. 15 is a perspective drawing of the attachment that does not have a bypass conduit.

FIG. 16 is a drawing showing the constitution of a plug body with respect to the attachment shown in FIG. 15.

FIG. 17 is a drawing showing the tissue recovery filter having a movable portion.

FIG. 18 is an explanatory drawing of the operation of removing tissue by pressing the movable portion with a finger.

FIG. 19 is a partial cutaway view showing the constitution of a tissue recovery filter in which the movable portion is constituted from a separate body.

FIG. 20 is a sectional view of the distal end portion of the endoscope insertion portion showing the shape of the distal end portion of the working channel.

FIG. 21 is a view from arrow D in FIG. 20.

FIG. 22 is a sectional view of the distal end portion of the endoscope insertion portion showing the shape of the distal end portion of the working channel.

FIG. 23 is a view from arrow E in FIG. 22.

FIG. 24 is a plan view showing the constitution of the attachment having a valve.

FIG. 25 is a perspective view of the attachment shown in FIG. 24.

FIG. 26 is a sectional view along line F-F in FIG. 24.

FIG. 27 is a sectional view along line G-G in FIG. 24.

FIG. 28 is a perspective view showing the attachment and the tissue recovery device.

FIG. 29 is a perspective view showing the state of the tissue recovery device mounted on the attachment.

FIG. 30 is a perspective view showing the attachment and the tissue recovery device.

FIG. 31 is a sectional view showing the attachment and the tissue recovery device.

FIG. 32 is a drawing showing the state of the valve rotated to the second position.

FIG. 33 is a drawing showing the state of the tissue recovery device mounted.

Claims

1. An endoscope system comprising: an endoscope in which an endoscope insertion portion that is inserted into a body extends from an endoscope control portion that an operator controls;a suction conduit that opens to a distal end portion of the endoscope insertion portion and passes through the endoscope, with its proximal end portion connected to a suction unit;a working channel that branches off and extends from a branch portion that is formed in the suction conduit and allows the insertion of a treatment tool toward the opening of the distal end portion of the suction conduit; anda tissue recovery device that is provided in the endoscope control portion further to the proximal end side than the branch portion of the suction conduit and capable of trapping tissue that is suctioned by the suction conduit.

2. An endoscope system comprising: an endoscope in which an endoscope insertion portion that is inserted into a body extends from an endoscope operation portion that an operator controls;a working channel that opens to a distal end portion of the endoscope insertion portion and passes through the endoscope, with its proximal end portion opening to the endoscope operation portion;a tissue recovery device that is connected to a connection conduit that branches from a branch portion formed in the proximal end side of the working channel and is capable of trapping tissue that is drawn into the working channel; anda suction conduit for suctioning tissue via the tissue recovery device and the working channel, being connected to the tissue recovery device and connected to a suction unit through the inside of the endoscope.

3. The endoscope system according to claim 2, further comprising an attachment wherein a portion of the working channel that includes the branch portion and the distal end portion of the suction conduit that is connected to the tissue recovery device are formed to be removably attached as one piece with respect to the endoscope operation portion.

4. The endoscope system according to claim 3, wherein the tissue recovery device is removably attached to the attachment.

5. The endoscope system according to claim 3, wherein the attachment is manufactured from an elastic member.

6. The endoscope system according to claim 4, wherein the attachment has a bypass conduit that bypasses the tissue recovery device to allow communication between the connection conduit and the suction conduit, with the bypass conduit being blocked when the tissue recovery device is attached and opened when the tissue recovery device is removed.

7. The endoscope system according to claims 1 or 2, wherein the tissue recovery device has a tissue recovery case and a tissue recovery filter that is removably attached to the tissue recovery case.

8. The endoscope system according to claim 4, wherein the attachment has a main body portion that is attached to and detached from the endoscope and a valve that is inserted to rotate freely in the main body, with the valve being rotated so as to be able to select a first rotation position that allows communication between the distal end portion of the suction conduit and the proximal end portion of the working channel via the bypass conduit, and a second rotation position that blocks the bypass conduit to separately open the distal end portion of the suction conduit and the proximal end portion of the working channel to the outside.

9. The endoscope system according to claim 7, wherein the tissue recovery filter consists of two tissue trapping surfaces provided back to back, and the tissue recovery case is constituted so as to mount the tissue recovery filter so that the tissue trapping surfaces are disposed approximately perpendicular to the flow path of a fluid that suctions tissue.

10. The endoscope system according to claim 4, further comprising a coupling member that is mountable on a distal end side connection port that is provided on the proximal end of the connection conduit of the attachment to be connectable with the tissue recovery device and a proximal end side connection port that is provided on the conduit forming the distal end portion of the suction conduit in the attachment to be connectable with the tissue recovery device to fluidly connect the working channel and the suction conduit.

11. The endoscope system according to claim 6, provided with a first plug body that is mountable in the distal end side connection port of the connection conduit that is open to the outside when the tissue recovery device is removed from the attachment, and a second plug body that is mountable in the distal end side connection port of the connection conduit that is open to the outside when the tissue recovery device is removed from the attachment.

12. The endoscope system according to claim 3, wherein the attachment has a first face that faces the endoscope operation portion when mounted on the endoscope operation portion and is constituted so that the tissue recovery device is disposed on a second face that is on the opposite side of the first face.

13. The endoscope system according to claim 1, wherein the tissue recovery device is removably attached to the suction conduit.