JP2012120664A - Endoscope suction pipeline changeover device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an endoscope suction pipeline changeover device capable of efficiently performing suction operation without being affected by slide resistance and dispensing with processing of high precision.SOLUTION: The endoscope suction pipeline changeover device 30 includes a pipeline member 31 and a suction switch 69a being a cap-shaped operation part. The pipeline member 31 has the first pipeline part 33 communicating with the suction channel 69d arranged on the side of an insertion part 10 and the second pipeline part 35 communicating with the suction device 73 connected to an endoscope 1. The suction switch 69a is movable to the pipeline member 31 with respect to the axial direction of the pipeline member 31 and performs suction changeover operation by movement. The suction switch 69a is movable to either one of a first position where the second pipeline part 35 is allowed to communicate with the outside of the endoscope 1 and a second position where the communication of the second pipeline part 35 with the outside is cut off and the first pipeline part 33 is allowed to communicate with the second pipeline part 35.

Description

  The present invention relates to an endoscope suction line switching device for switching a suction operation in an endoscope.

  The endoscope has a duct member for sucking body fluid and the like from the body cavity, and an operation unit for operating to switch the suction operation in the duct member.

The duct member has a cylinder and a syringe (piston) accommodated in the cylinder so as to be slidable in the axial direction of the cylinder.
The syringe is formed with a conduit portion through which mucus, fluid, and the like flow.
The cylinder is provided with two suction tubes for suction. One suction tube passes through the insertion portion of the endoscope and opens at the distal end portion of the insertion portion in order to suck body fluid. This one suction tube is always in communication with the conduit. The other suction tube is connected to a suction device. The other suction tube communicates with the pipe line portion according to the sliding of the syringe.

  The operation unit is, for example, a cap and a suction button. The operation unit is slidable in the axial direction of the syringe and contacts the cylinder by sliding.

  The operation unit slides away from the cylinder, and forms a gap between the contact surface of the cylinder and the operation unit. At the same time, the operation unit slides the syringe with respect to the cylinder, cuts off the communication between the conduit and the other suction tube, and allows the gap and the other suction tube to communicate. Accordingly, the operation unit switches the suction operation to the suction operation for the suction device to suck outside air.

  Further, the operation unit slides and comes into close contact with the cylinder to seal the gap. Further, the operation unit presses the syringe simultaneously with the sliding, slides the syringe with respect to the cylinder, and causes the conduit portion of the syringe and the other suction tube to communicate with each other by the sliding. Accordingly, the operation unit switches the suction operation to the suction operation for the suction device to suck the body fluid.

  For example, Patent Document 1 discloses an endoscope line switching valve that reduces a sliding resistance between a syringe member and a cylinder member by providing a seal member other than a sliding surface between the syringe member and the cylinder member. ing.

  Further, for example, in Patent Document 2, the sliding resistance when operating the syringe-like member in the cylinder-like member is small, the operability is good, and the annular seal member can be used for a long time without being damaged. An endoscope pipe switching device is disclosed.

  Further, for example, in Patent Document 3, in a non-operating state of the valve means, suction from the atmosphere is made possible via the bypass passage, and solids such as dust, cleaning liquid, etc. are provided in the space where the urging means is provided. An endoscope suction operation device that can be easily discharged even if the liquid enters is disclosed.

Japanese Patent Laid-Open No. 2004-223121 JP 2004-201886 A JP-A-5-317245

  As described above, the operation unit needs to slide the syringe with respect to the cylinder for the suction operation. When the syringe slides relative to the cylinder, a sliding resistance is always generated, and the operability of the suction operation is not efficient due to the sliding resistance.

  Further, in order to ensure watertightness and airtightness in the syringe and the cylinder, the outer diameter of the syringe and the inner diameter of the cylinder need to be substantially the same. Thereby, it is necessary to process a syringe and a cylinder with high precision, and an effort and cost start.

  The present invention has been made in view of these circumstances, and is capable of performing a suction operation efficiently without being affected by sliding resistance, and switching an endoscope suction line that does not require high-precision processing. An object is to provide an apparatus.

  In order to achieve the object, the present invention provides a first conduit portion communicating with the suction channel disposed on the insertion portion side of the endoscope, and a first conduit portion communicating with the suction device side connected to the endoscope. A pipe member having two pipe parts, and movable with respect to the pipe member in the axial direction of the pipe member, and from the second pipe part to the first pipe part In order to prevent the suction force of the suction device from acting, a first position where the second conduit portion communicates with the outside of the endoscope, and the suction device is connected to the suction channel and the first channel. In order to suck through the pipe line part and the second pipe part, the communication between the second pipe part and the outside is blocked, and the first pipe part and the second pipe are blocked. A cap-shaped operation part that moves to any one of the second positions that communicate with the road part, and operates the switching of suction by the movement; To provide an endoscopic suction conduit switching apparatus, characterized by Bei.

  According to the present invention, it is possible to provide an endoscope suction conduit switching device that can efficiently perform a suction operation without being affected by sliding resistance and does not require high-precision processing.

FIG. 1 is a schematic view of an endoscope according to the present invention. FIG. 2A is a diagram illustrating the endoscope suction conduit switching device when the suction switch is moved to the first position in the first embodiment. FIG. 2B is a diagram illustrating the endoscope suction conduit switching device when the suction switch is moved to the second position in the first embodiment. 2C is a view taken along line 2C-2C shown in FIG. 2A. FIG. 3A is an exploded view of a conduit member composed of a cylinder and a syringe. FIG. 3B is a diagram illustrating the conduit member in a state where the syringe is disposed in the cylinder. FIG. 4A is a diagram illustrating an endoscope suction conduit switching device when the suction switch is moved to the first position in the second embodiment. FIG. 4B is a diagram illustrating the endoscope suction conduit switching device when the suction switch is moved to the second position in the second embodiment. FIG. 4C is a top view of the pipe member. FIG. 4D is a cross-sectional perspective view of the duct member. FIG. 5A is a diagram illustrating a first modification of each embodiment, in which the suction switch is moved to the first position, the elastic body is folded, and the opening is closed. FIG. 5B is a diagram illustrating a state where the suction switch is moved to the second position from the state illustrated in FIG. 5A, the elastic body is pulled, and the opening is opened. FIG. 6A is a diagram illustrating a second modification example of each embodiment, in which the suction switch is moved to the first position, and the separation integrated conduit portion is separated. FIG. 6B is a diagram illustrating a state where the suction switch is moved to the second position from the state illustrated in FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
The first embodiment will be described with reference to FIGS. 1, 2A, 2B, and 2C.
As shown in FIG. 1, the endoscope 1 includes an elongated insertion portion 10 that is inserted into a body cavity of a patient, and an operation portion 60 that is connected to a proximal end portion of the insertion portion 10 and operates the endoscope 1. Is arranged.

  The insertion portion 10 includes a distal end hard portion 21, a bending portion 23, and a flexible tube portion 25 from the distal end side to the proximal end portion side of the insertion portion 10. The proximal end portion of the distal rigid portion 21 is connected to the distal end portion of the bending portion 23, and the proximal end portion of the bending portion 23 is connected to the distal end portion of the flexible tube portion 25.

The distal end hard portion 21 is a distal end portion of the insertion portion 10 and is hard.
The bending portion 23 is bent in a desired direction such as up, down, left, and right, for example, by an operation of a bending operation unit 67 described later. When the bending portion 23 is bent, the position and orientation of the distal end hard portion 21 change, the observation object is captured in the observation field, and the illumination light is illuminated on the observation object.
The flexible tube portion 25 has a desired flexibility and is bent by an external force. The flexible tube portion 25 is a tubular member that extends from a main body portion 61 described later in the operation portion 60.

  The operation unit 60 is connected to a main body unit 61 from which the flexible tube unit 25 extends, a gripping unit 63 that is connected to the base end of the main body unit 61 and is gripped by an operator who operates the endoscope 1, And a universal cord 65 connected to the portion 63.

  The grip portion 63 is provided with a bending operation portion 67 that performs a bending operation on the bending portion 23. The bending operation section 67 includes a left / right bending operation knob 67a for bending the bending section 23 left and right, a vertical bending operation knob 67b for bending the bending section 23 up and down, and a fixed knob for fixing the position of the curved bending section 23. 67c.

  The grip portion 63 is provided with a switch portion 69 having a suction switch 69a and an air / water supply switch 69b. The switch portion 69 is operated by the operator's hand when the grip portion 63 is gripped by the operator. The suction switch 69a is operated when the endoscope 1 sucks mucus or fluid from a suction opening (not shown) disposed in the distal end hard portion 21 through a suction channel 69d described later. The suction channel 69 d is disposed in the endoscope 1 from the distal end hard portion 21 to the grip portion 63. The air / water supply switch 69b is operated when air is supplied / water is supplied from an air / water supply channel (not shown) in order to secure an observation field of view of an imaging unit (not shown) in the distal end hard portion 21. The fluid includes water and gas.

  In addition, various buttons 71 for endoscopic photographing are disposed on the grip portion 63.

  The universal cord 65 has a connection portion 65 a that connects to a video processor, a light source device, and a suction device 73 (not shown). The suction device 73 is, for example, a suction pump that is disposed outside the endoscope 1 and is connected to the connection portion 65a.

Next, with reference to FIG. 2A, FIG. 2B, and FIG. 2C, the endoscope suction conduit switching device 30 in the present embodiment will be described.
The endoscope suction line switching device 30 is disposed in the grip portion 63. The endoscope suction pipe switching device 30 is movable with respect to the pipe line member 31 disposed in the gripping portion 63 and the pipe line member 31 in the axial direction of the pipe line member 31, and is sucked by movement. And a suction switch 69a which is a cap-shaped operation unit for operating the switching.

  The position of the pipe line member 31 is fixed without being affected by the movement of the suction switch 69a. The pipe member 31 is, for example, metal and is a solid member.

  As shown in FIGS. 2A and 2B, the duct member 31 includes a first duct section 33 communicating with the suction channel 69 d disposed on the insertion section 10 side of the endoscope 1, and a universal cord 65. And a second conduit portion 35 communicating with the suction device 73 side connected to the endoscope 1 via the connection portion 65a. One end of the pipe line member 31 communicates with the universal cord 65 and is connected to the suction device 73 via the universal cord 65 and the connection portion 65a.

  As shown in FIG. 2A, FIG. 2B, and FIG. 2C, the 1st pipe line part 33 and the 2nd pipe line part 35 are arrange | positioned along the axial direction of the pipe line member 31, and are mutually parallel. It is.

  The first conduit portion 33 is disposed on the side surface side of the conduit member 31. The first pipeline section 33 is shorter than the pipeline member 31 and does not penetrate the pipeline member 31 in the axial direction of the pipeline member 31. The first pipe line portion 33 communicates with the suction channel 69d on the side surface on the one end 33a side, and faces the inside 691a of the cap-shaped suction switch 69a on the other end 33b. One end 33 a is disposed inside the pipe member 31, and the other end 33 b is disposed on the same plane as the other end of the pipe member 31. The other end 33b is formed with a communication port 33d that communicates with the inside 691a of the suction switch 69a.

  The first conduit portion 33 is always in communication with the suction channel 69d on the side surface on the one end 33a side without being affected by the movement position of the suction switch 69a, and the communication port 33d is connected to the inside 691a side of the suction switch 69a. Communicate.

  The second pipeline part 35 has the same length as the pipeline member 31 and penetrates the pipeline member 31 in the axial direction of the pipeline member 31. The second pipe section 35 is connected to the suction device 73 side at one end 35a, and is opposed to the inside 691a of the cap-shaped suction switch 69a at the other end 35b. A communication port 35e for communicating with the suction device 73 is formed at the one end 35a. The communication port 35e is located at one end of the pipe line member 31 and is connected to the suction device 73 via the universal cord 65 and the connection portion 65a. The other end 35 b is disposed on the same plane as the other end of the pipe line member 31. Similarly to the other end 33b of the first conduit section 33, the other end 35b is formed with a communication port 35d that communicates with the inside 691a side of the suction switch 69a.

  The opening area of the second pipeline part 35 is the same as the opening area of the first pipeline part 33 or larger than the opening area of the first pipeline part 33.

  The second pipe section 35 is always connected to the suction device 73 side by the communication port 35e on the one end 35a side and is sucked by the communication port 35d on the other end 35b side without being influenced by the moving position of the suction switch 69a. The switch 69a communicates with the inside 691a side.

  The suction switch 69a has a cylindrical shape having a bottom 691b. Specifically, the suction switch 69a has a bottom 691b and a cylindrical wall portion 691c standing from the bottom 691b. The wall 691c is not disposed on the periphery of the bottom 691b, but is disposed on the center side of the periphery and on the outer side of the periphery 31c of the other end of the conduit member 31. The central axis of the suction switch 69a is, for example, coaxial with the central axis of the pipe line member 31.

  The suction switch 69a has a space portion 691d (recessed portion) formed by the bottom 691b and the wall portion 691c. The space 691d opens toward the communication port 33d. The bottom 691b in the space 691d is opposed to the communication ports 33d and 35d. The suction switch 69a is made of metal, for example.

  The suction switch 69 a is configured to prevent the suction force of the suction device 73 from acting from the second pipe section 35 to the first pipe section 33, and the second pipe section 35 and the endoscope 1. The first position as shown in FIG. 2A for communicating with the outside, and the suction device 73 sucks body fluid and the like through the suction channel 69d, the first conduit portion 33, and the second conduit portion 35. In addition, any of the second positions as shown in FIG. 2B is used to block communication between the second pipe section 35 and the outside, and to connect the first pipe section 33 and the second pipe section 35. It can be moved. At this time, the suction switch 69 a moves along the axial direction of the duct member 31.

  As shown in FIG. 2A and FIG. 2B, the endoscope suction line switching device 30 is disposed on the peripheral edge 31c, the suction switch 69a is disposed, the mounting portion 37 attached to the grip portion 63, and the sealing A member 39 and an elastic member 41 are provided.

  As shown in FIG. 2B, the sealing member 39 is disposed on the contact surface 37a of the attachment portion 37 with which the suction switch 69a (wall portion 691c) contacts when the suction switch 69a is pressed, for example. The sealing member 39 may be disposed on the suction switch 69a (the end portion of the wall portion 691c) facing the contact surface 37a. As described above, the sealing member 39 may be disposed between the contact surface 37a and the suction switch 69a facing the contact surface 37a. The sealing member 39 is disposed over the entire circumference along the peripheral edge 31c and the wall portion 691c. The sealing member 39 is, for example, a resin O-ring.

  2B, when the suction switch 69a moves to the second position and the first conduit portion 33 and the second conduit portion 35 communicate with each other, the sealing member 39 has a contact surface. 37 a and the suction switch 69 a are in close contact with each other, the communication between the second pipe line part 35 and the outside is blocked, and the other end 33 b (communication port 33 d) of the first pipe line part 33 and the second pipe line part 35. The space portion 691d which is the inside of the suction switch 69a communicating with the other end 35b (communication port 35d) is sealed. The sealing member 39 seals the inside of the suction switch 69a in order to ensure watertightness and airtightness inside the suction switch 69a (space portion 691d) when the suction switch 69a is pressed.

  A space portion 691d is formed airtight and watertight inside the suction switch 69a sealed by the sealing member 39. This space portion 691 d is blocked from the outside, and communicates with the communication port 33 d in the first pipeline portion 33 and the communication port 35 d in the second pipeline portion 35. At this time, the communication port 33d in the first pipeline 33, the communication port 35d in the second pipeline 35, and the space 691d communicate with each other in a state where watertightness and airtightness are ensured.

  The elastic member 41 is disposed between the suction switch 69 a and the attachment portion 37. Specifically, the elastic member 41 is disposed between the bottom 691b and the peripheral edge of the wall portion 691c in the plane direction of the bottom 691b, and between the suction switch 69a and the mounting portion 37 in the axial direction of the pipe line member 31. ing. The elastic member 41 is, for example, a metal winding spring wound around the wall portion 691c, and can be expanded and contracted.

  As shown in FIG. 2A, the elastic member 41 urges the suction switch 69a away from the pipe member 31 along the axial direction of the pipe member 31 in order to move the suction switch 69a to the first position. It has an elastic force. When the elastic member 41 urges the suction switch 69a, the elastic member 41 is urged between the suction switch 69a (the end portion of the wall portion 691c) and the contact surface 37a by the urging force in the axial direction of the duct member 31. In addition, a communication port (gap) 43 for communicating the second pipe line part 35 (communication port 35d) with the outside is formed. The communication port 43 communicates with the first pipe line portion 33 (communication port 33d) and the outside. Similar to the sealing member 39, the communication port 43 is formed over the entire circumference along the peripheral edge 31c and the wall portion 691c. In addition, the communication port 43 should just be formed in the 2nd pipe line part 35 side at least.

  The suction channel 69 d is connected to the pipe line member 31 and communicates with the first pipe line part 33.

Next, the operation method of this embodiment will be described.
The insertion unit 10 is inserted into the body cavity. As shown in FIG. 2A, when the elastic member 41 urges the suction switch 69a away from the pipe member 31 along the axial direction of the pipe member 31, the suction switch 69a moves to the first position. At this time, the pipe member 31 remains fixed in position without moving and sliding with respect to other members. Therefore, water tightness and air tightness are ensured in the pipe line member 31. At this time, the communication port 43 is formed between the suction switch 69a (the end of the wall portion 691c) and the contact surface 37a (the sealing member 39). As a result, the second duct portion 35 (communication port 35 d) communicates with the outside through the communication port 43.

  Next, the suction device 73 sucks outside air from the outside through the communication port 43, the communication port 35 d, the second pipe part 35, the communication port 35 e, and the universal cord 65. At this time, as shown in FIG. 2A, since the outside and the second conduit portion 35 communicate with each other, the suction of the suction device 73 from the second conduit portion 35 to the first conduit portion 33 is performed. Force is prevented from acting.

  As shown in FIG. 2B, when the suction switch 69a is pressed and moved to the second position, the wall portion 691c comes into close contact with the sealing member 39 disposed on the contact surface 37a, and the communication port 43 is closed. . As a result, the communication between the second pipe section 35 and the outside is blocked by the sealing member 39, and the other end 33 b (communication port 33 d) of the first pipe section 33 and the second pipe section 35 are connected. The space portion 691d communicating with the end 35b (communication port 35d) is sealed, and the first conduit portion 33 and the second conduit portion 35 communicate with each other via the space portion 691d. At this time, the pipe member 31 is not moved and slid and the position is fixed.

  Next, as shown in FIG. 2B, the suction device 73 is connected to a suction channel 69d, a first pipe section 33, a communication port 33d, a space 691d, a communication port 35d, and a second pipe section 35 from a suction opening (not shown). The body fluid is sucked through the communication port 35e and the universal cord 65.

  As described above, in this embodiment, for the suction operation, the pipe member 31 is not moved and slid, but only the suction switch 69a is moved, and it is efficiently affected without being affected by the sliding resistance. A suction operation can be performed. Further, in this embodiment, since the pipe member 31 is not moved and slid, it is possible to always ensure water tightness and air tightness in the pipe member 31, so that it is not necessary to perform highly accurate processing on the pipe member 31. It can be made cheap.

Further, in this embodiment, the suction operation can be easily switched without moving and sliding the duct member 31 only by moving the suction switch 69a.
Moreover, in this embodiment, when only the 2nd pipe line part 35 penetrates the pipe line member 31, when the suction switch 69a moves to a 1st position, as shown to FIG. It is possible to prevent the suction force from acting directly on the first pipe line portion 33.

  Moreover, in this embodiment, the 1st pipe line part 33 and the 2nd pipe line part 35 are arrange | positioned along the axial direction of the pipe line member 31, and it becomes easy for the pipe line member 31 to be mutually parallel. Can be processed.

  In this embodiment, the sealing member 39 is disposed between the contact surface 37a and the suction switch 69a facing the contact surface 37a, so that the suction switch 69a is moved to the second position. The space portion 691d can be reliably sealed, and the first conduit portion 33, the second conduit portion 35, and the space portion 691d can be reliably communicated with each other while ensuring airtightness and watertightness.

In the present embodiment, the pipe member 31 does not need to be limited to the above configuration as long as the pipe member 31 does not move and slide and is fixed in position.
As shown in FIGS. 3A and 3B, for example, the pipe member 31 includes, for example, a cylinder 51, a cylinder 51, and a first pipe part 33 and a second pipe part 35. You may comprise from the syringe 53 (piston).

  The cylinder 51 has an opening 51d on the side surface so that the first conduit 33 and the suction channel 69d communicate with each other. The cylinder 51 is made of metal, for example.

  The syringe 53 is made of metal, for example. Further, the peripheral surface 53c of the syringe 53 may be covered with a sealing member 55 such as a resin O-ring in a state in which the first conduit 33 communicates with the suction channel 69d. The sealing member 55 may be formed integrally with the syringe 53 by two-color molding, or may be separate from the syringe 53. When the sealing member 55 is provided, the first pipe line part 33 and the second pipe line part 35 may be groove parts covered by the sealing member 55.

  Thereby, when at least one of the 1st pipe line part 33 and the 2nd pipe line part 35 is wash | cleaned, the syringe 53 can be removed from the cylinder 51, and another clean syringe 53 can be attached to the cylinder 51. By disposing, it is possible to quickly shift to the next suction operation.

  Thereby, the sealing member 55 can ensure airtightness and watertightness between the syringe 53 and the cylinder 51 reliably.

  Further, even if the suction switch 69a moves, the syringe 53 and the cylinder 51 do not slide, so that it is possible to prevent mutual wear and to prevent the occurrence of sliding resistance, and efficiently without being affected by the sliding resistance. A suction operation can be performed.

Next, a second embodiment according to the present invention will be described with reference to FIGS. 4A, 4B, 4C, and 4D.
As described above, the pipe line member 31 of the present embodiment includes the cylinder 51 and the syringe 53 separate from the cylinder 51.

  The first conduit portion 33 and the second conduit portion 35 are spirally disposed on the peripheral surface of the conduit member 31. Such a 1st pipe line part 33 and the 2nd pipe line part 35 are the groove parts arrange | positioned helically by the surrounding surface 53c of the syringe 53, for example. The second conduit portion 35 is disposed between the one end 53 a and the other end 53 b of the syringe 53. In addition, the first conduit portion 33 is disposed between the suction channel 69 d and the other end 53 b of the syringe 53. Between the suction channel 69d and the other end 53b of the syringe 53, the first pipe line part 33 and the second pipe line part 35 are arranged in parallel without crossing each other.

  The other end 53b of the syringe 53 protrudes closer to the suction switch 69a than the contact surface 37a. The syringe 53 is covered with a sealing member 55 such as an O-ring, for example, in a state where the first conduit 33 communicates with the suction channel 69d. The sealing member 55 covers the first pipeline portion 33 and the second pipeline portion 35 that are the groove portions, and connects the first pipeline portion 33 and the second pipeline portion 35 that are the groove portions. It forms as a pipe line, and airtightness and watertightness of the cylinder 51 and the syringe 53 are ensured. Note that the sealing member 55 may not be disposed at the other end 53b of the syringe 53 that protrudes closer to the suction switch 69a than the contact surface 37a.

  In the present embodiment, the first pipe section 33 and the second pipe section 35 and the second pipe section 35 are spirally disposed on the peripheral surface 53c of the syringe 53, so that the first pipe section 33 and the second pipe section are disposed. The strength of the pipe line member 31 (syringe 53) can be secured without increasing the outer diameter of the syringe 53 in a state where the path portion 35 is formed.

  Moreover, in this embodiment, the 1st pipe line part 33 and the 2nd pipe line part 35 are arrange | positioned spirally to the surrounding surface 53c of the syringe 53, and the other end 53b of the syringe 53 is arrange | positioned rather than the contact surface 37a. It is protruding. Thereby, in this embodiment, the area in the 1st pipe line part 33 and the 2nd pipe line part 35 which protrudes from the contact surface 37a and touches the space part 691d like this embodiment is 1st Embodiment. Thus, the portion in contact with the space 691d side becomes larger than the case where only the communication ports 33d and 35d are provided, and a large amount of suction can be secured.

  In addition, the 1st pipe line part 33 and the 2nd pipe line part 35 may be arrange | positioned in the internal peripheral surface of the cylinder 51, as long as it is arrange | positioned helically.

  As a first modification of each of the above-described embodiments, as shown in FIGS. 5A and 5B, the first pipeline portion 33 of this modification is disposed on the side of the pipeline member 31. The pipe member 31 has a metal separation wall 57 disposed on the other end surface 31d so as to pass through the central axis of the pipe member 31 and formed in a planar shape. The dividing wall 57 is connected to a communication port 33d (the other end 33b) of the first conduit portion 33 and a communication port 35d (the others) of the second conduit portion 35 through one end 59a which is a top portion of an elastic body 59 described later. It is a wall that divides the end 35b).

  In addition, the endoscope suction pipe switching device 30 of the present modification includes a communication port 33d (the other end 33b) of the first pipe portion 33 and a communication port 35d (the other end 35b) of the second pipe portion 35. An umbrella-like elastic body 59 that covers the other end surface 31d including The elastic body 59 is disposed on the inside (space portion 691d) side of the suction switch 69a. The elastic body 59 has an opening 59c on its peripheral surface that opens and closes in accordance with the movement position of the suction switch 69a in order to connect the first conduit portion 33 and the second conduit portion 35. One of the one end 59a that is the top of the elastic body 59 and the other end 59b that is the edge of the elastic body 59 moves relative to the other. In this modification, one end 59a is fixed to the separation wall 57, the other end 59b is fixed to, for example, an end of the wall 691c, and the other end 59b is a conduit member with respect to the one end 59a as the suction switch 69a moves. 31 moves in the axial direction.

As shown in FIG. 5A, when the suction switch 69a is moved to the first position, the other end 59b is lifted together with the suction switch 69a. At this time, the elastic body 59 is contracted (folded), and the circumferential surface of the elastic body 59 Is partially folded and the opening 59c is closed.
As shown in FIG. 5B, when the suction switch 69a is moved to the second position, the other end 59b is pulled to the other end surface 31d side by the suction switch 69a, the elastic body 59 is extended, and the circumferential surface of the elastic body 59 is The opening 59c opens.

  Thereby, in this modification, the opening 59c opens and closes according to the movement position of the suction switch 69a (operation of the suction switch 69a). Therefore, in this modification, when the suction switch 69a is moved to the second position by the elastic body 59, the space portion 691d can be reliably sealed, and the first conduit portion 33 and the second conduit portion 35 are sealed. The first conduit portion 33 and the second conduit portion 35 can be reliably communicated with each other in a state in which airtightness and watertightness are ensured in the space portion 691d.

  As a second modification of each embodiment described above, as shown in FIGS. 6A and 6B, the endoscope suction line switching device 30 of the present modification is separated or changed according to the position of the suction switch 69a. It further has a separate integrated conduit section 80 that is integrated. As shown in FIG. 6A, the separation integrated pipe section 80 is separated when the suction switch 69a is moved to the first position, and the communication between the first pipe section 33 and the second pipe section 35 is cut off. As shown in FIG. 6B, when the suction switch 69a moves to the second position, the suction switch 69a is integrated with and communicates with the first conduit portion 33 and the second conduit portion 35. And the second pipe line portion 35 communicate with each other. For example, the separation integrated conduit 80 is separated into one 80a and the other 80b, and one 80a and the other 80b of the separation integrated conduit 80 have substantially the same diameter.

  As shown in FIG. 6A and FIG. 6B, one side 80a of the separate integrated conduit part 80 is fixed to the other end face 31d, for example, away from the bottom 691b and the wall part 691c, and is covered with a suction switch 69a, for example, metal The first block 81 is formed inside. Since the first block 81 is fixed, one side 80a of the separation integrated pipe part 80 is always connected to the first pipe part 33 (communication port 33d) without being affected by the movement position of the suction switch 69a. Communicate. One side 80a of the separate integrated pipe part 80 has, for example, substantially the same diameter as the first pipe part 33.

  The first block 81 is, for example, a sealing member 83 that seals the first pipe line portion 33 and one 80a of the separate integrated pipe line portion 80 on the fixed surface 81a fixed to the other end surface 31d. have. The sealing member 83 may be disposed on the other end surface 31d as long as it is disposed between the fixed surface 81a and the other end surface 31d facing the fixed surface 81a.

  The other 80 b of the separate integrated conduit portion 80 has substantially the same diameter as the second conduit portion 35. The other 80b of the separate integrated conduit portion 80 is formed inside a metal second block 85, for example. The second block 85 is disposed inside the space 691d and is in close contact with the bottom 691b and the wall 691c. Therefore, as shown in FIG. 6A and FIG. 6B, the second block 85 moves along the longitudinal direction of the conduit member 31 in accordance with the movement of the suction switch 69a. It moves in the same way as the second block 85. As shown in FIG. 6A, the second block 85 is formed with a communication port 43 when the suction switch 69a is moved to the first position, and is connected to the second duct portion 35 (communication port 35d) and the outside. Are in the longitudinal direction of the pipe line member 31 and have substantially the same length as the wall portion 691c.

  As shown in FIG. 6A, when the suction switch 69a is moved to the first position, the second block 85 is moved together with the suction switch 69a (lifted by the suction switch 69a). The other 80b is separated from the one 80a of the separation integrated conduit 80 and the second conduit 35, and the communication between the one 80a of the separation integrated conduit 80 and the second conduit 35 is blocked. At this time, since the communication between the one 80a of the separation integrated conduit 80 and the other 80b of the separation integrated conduit 80 is blocked, the separation integrated conduit 80 is separated.

  As shown in FIG. 6B, when the suction switch 69a moves to the second position, the second block 85 moves together with the suction switch 69a, and the other 80b of the separation integrated conduit portion 80 is connected to the separation integrated conduit. The part 80 communicates with one side 80 a and the second pipe line part 35. At this time, since one side 80a of the separate integrated conduit portion 80 and the other 80b of the separate integrated conduit portion 80 communicate with each other, the separate integrated conduit portion 80 is formed.

  The second block 85 includes, for example, a sealing member 87 that seals the communicating second pipe part 35 and the other 80b of the separate integrated pipe part 80 on the facing surface 85a facing the other end surface 31d. ing. The sealing member 87 may be disposed on the other end surface 31d as long as it is disposed between the facing surface 85a and the other end surface 31d facing the facing surface 85a.

Further, the second block 85 includes a sealing member 89 that seals one side 80a and the other side 80b of the separate integrated conduit portion 80 that communicates with each other on the facing surface 85b that faces the first block 81, for example. . The sealing member 89 may be disposed on the opposing surface 81b on the first block 81 side, and between the opposing surface 81b on the first block 81 side and the opposing surface 85b on the second block 85 side. What is necessary is just to be arrange | positioned. The sealing member 89 covers and seals the opening surface of one 80a in the state shown in FIG. 6A. The sealing member 89 may be disposed between the sealing member 87 and the other end surface 31d.
The sealing members 83, 87, 89 are, for example, resin O-rings.

  As described above, in the present modification, the separation-integrated conduit portion 80 is integrated or separated according to the movement position of the suction switch 69a (operation of the suction switch 69a). In addition, the separate integrated conduit portion 80 communicates directly with the first conduit portion 33 and the second conduit portion 35. Therefore, in this modification, when the suction switch 69a is moved to the second position, the body fluid can be sucked without leaking.

  In this modification, the sealing members 83, 87, and 89 can reliably prevent leakage of bodily fluid and can suck outside air without waste.

  In this modified example, one side 80a of the separation integrated pipe line part 80 is fixed and the other 80b of the separation integrated pipe line part 80 moves, but this may be reversed. Further, in this modification, the separation integrated conduit portion 80 is separated into one 80a and the other 80b, but the number to be separated is not particularly limited, and at least one of the separation integral conduit portions 80 blocks communication between the separation integral conduit portions 80. Further, it may be moved in accordance with the movement of the suction switch 69a.

  Further, in this modification, the separation integrated pipe portion 80 is formed inside the first block 81 and the inside of the second block 85, but it is not necessary to be limited to this, and is arranged as a member. Also good.

  The present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Further, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiment.

  DESCRIPTION OF SYMBOLS 1 ... Endoscope, 10 ... Insertion part, 30 ... Endoscope suction pipe | tube switching apparatus, 31 ... Pipe line member, 33 ... 1st pipe line part, 35 ... 2nd pipe line part, 37 ... Attachment part 39 ... sealing member, 41 ... elastic member, 43 ... communication port, 65 ... universal cord, 69a ... suction switch, 69d ... suction channel, 73 ... suction device, 691a ... inside, 691b ... bottom, 691c ... wall, 691d: Space portion.

Claims (8)

A conduit having a first conduit that communicates with a suction channel disposed on the insertion portion side of the endoscope, and a second conduit that communicates with the suction device connected to the endoscope Members,
In order to prevent the suction force of the suction device from acting from the second pipeline section to the first pipeline section, which is movable with respect to the pipeline member in the axial direction of the pipeline member. A first position where the second conduit portion communicates with the outside of the endoscope, and the suction device includes the suction channel, the first conduit portion, and the second conduit portion. Either of the second position where the communication between the second pipe part and the outside is cut off and the first pipe part and the second pipe part are communicated with each other. And a cap-shaped operation unit that operates switching of suction by movement,
An endoscope suction line switching device characterized by comprising: The first pipe line portion communicates with the suction channel on the side surface on one end side, and faces the inside of the cap-shaped operation portion on the other end,
2. The endoscope according to claim 1, wherein the second conduit portion is connected to the suction device at one end and is opposed to the inside of the cap-shaped operation portion at the other end. Suction line switching device.   3. The endoscope according to claim 2, wherein the first pipeline portion and the second pipeline portion are disposed along the axial direction of the pipeline member and are parallel to each other. Suction line switching device.   The endoscope suction conduit switching device according to claim 3, wherein the second conduit section penetrates the conduit member in the axial direction of the conduit member.   The endoscope suction conduit switching device according to claim 2, wherein the first conduit portion and the second conduit portion are spirally disposed on a peripheral surface of the conduit member. A mounting portion disposed on a peripheral edge of the pipe line member, the operating portion being disposed;
The operation portion is disposed between a contact surface of the mounting portion that contacts the operation portion when the operation portion is pressed and the operation portion facing the contact surface, and the operation portion is in the second position. When the first conduit portion and the second conduit portion communicate with each other, the contact surface and the operation portion are in close contact with each other, and the second conduit portion and the outside are in close contact with each other. And a sealing member that seals the inside of the operation unit communicating with the other end of the first pipe line part and the other end of the second pipe line part,
The operation unit is disposed between the operation unit and the attachment unit, and moves the operation unit away from the pipe member along the axial direction of the pipe member in order to move the operation unit to the first position. An elastic member that has an elastic force to be urged, and forms a communication port that communicates the second pipe line portion and the outside between the abutment surface and the operation portion by urging,
The endoscope suction conduit switching device according to claim 1, further comprising:   An opening that opens and closes in accordance with the position of the operation unit in order to communicate the first pipe line part and the second pipe line part, and the other end of the first pipe line part and the first 2 is disposed so as to cover the other end of the pipe section, and is folded when the operation section is moved to the first position to close the opening, and the operation section is moved to the second position. The endoscope suction line switching device according to claim 1, further comprising an elastic body that extends when moved to open the opening.   Depending on the position of the operation portion, the operation portion is separated or integrated, and when the operation portion moves to the first position, the communication between the first conduit portion and the second conduit portion is cut off. And further comprising a separate integrated conduit portion that is integrated when the operating portion moves to the second position, and communicates the first conduit portion with the second conduit portion. The endoscope suction conduit switching device according to claim 1.

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