Suction device with water injection function

Abstract

To provide a suction device with a water injection function that allows a suction state and a water injection state to be switched easily with one finger of an operator, and allows a size of the device to be reduced.SOLUTION: A suction device with a water injection function includes: body part side suction routes 13 and 14; a switch part side suction route 17; body part side water injection routes 15 and 16; a body part 11 in which a switch part side water injection route 18 is formed; a flexible tube 20 that forms the switch part side water injection route 18; and a switch part 12 rotatably connected to the body part 11. At least one of the body part 11 and the switch part 12 includes protrusions 21 and 22 for crushing the flexible tube 20. When the switch part 12 is at a first rotation position, the body part side suction routes 13 and 14 are communicated with the switch part side suction route 17 and the flexible tube 20 is crushed so that the switch part side water injection route 18 is brought into a non-communication state. When the switch part 12 is at a second rotation position, the flexible tube 20 is opened, and the body part side water injection routes 15 and 16 are communicated with the switch part side water injection route 18 so that the suction routes are brought into a non-communication state.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a suction device with a water injection function. [Background technology]

[0002] During brain or trauma surgery, etc., there may be work required to aspirate and drain blood, body fluids, cerebrospinal fluid, bone fragments, etc. that have accumulated in the affected area of ​​the human or animal brain, the inside of a wound, etc., and to inject water into the affected area to wash it (hereinafter referred to as "suction and irrigation work"). As a medical device used for suction and irrigation work during surgery, a suction device with irrigation function is used.

[0003] In relation to medical equipment used for suction and water injection, Patent Document 1 discloses a suction device with water injection function having control buttons for controlling valves attached to the suction path and the water injection path. In the suction device with water injection function described in Patent Document 1, the surgeon operates the suction side valve and the water injection side valve with his / her fingers, and can switch between the suction state and the water injection state. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] U.S. Pat. No. 9,259,519 Summary of the Invention [Problem to be solved by the invention]

[0005] Incidentally, in the suction device with water injection function described in Patent Document 1, when switching between the suction state and the water injection state, it is required to control two or more valves at the same time. Therefore, when switching between the suction state and the water injection state, the surgeon needs to operate the button with two or more fingers, which makes the operation of switching between the suction state and the water injection state complicated. Furthermore, since the suction device with water injection function described in Patent Document 1 has a mechanism for converting the operation of the button into the operation of the valve, there is a limit to miniaturizing the entire suction device with water injection function.

[0006] One object of the present invention is to provide a suction device with a water injection function that allows an operator to easily switch between a suction state and a water injection state with one finger and that can be made compact as a whole. Other objects of the present invention will become apparent from the description of this specification. [Means for solving the problem]

[0007] One aspect of the present invention includes a main body in which a first main body-side suction path, a second main body-side suction path, a first main body-side water injection path, and a second main body-side water injection path are formed, a switch in which a switch-side suction path is formed between the first main body-side suction path and the second main body-side suction path and is rotatably connected to the main body, and a flexible tube in which a switch-side water injection path is formed that communicates with the first main body-side water injection path and the second main body-side water injection path, at least one of the main body and the switch has a protrusion that protrudes in a direction intersecting a direction in which the flexible tube extends, and the switch is connected to the main body. When the switch unit is located in a first rotation position relative to the main body unit, the switch unit side suction path is positioned so as to communicate with the first main body side suction path and the second main body side suction path, and the switch unit side water injection path is blocked when the protrusion crushes the flexible tube, and when the switch unit is located in a second rotation position different from the first rotation position relative to the main body unit, the switch unit side suction path is positioned so as to not communicate with the first main body side suction path and the second main body side suction path, and the switch unit side water injection path is opened when the protrusion moves in a direction away from the position where it crushes the flexible tube. Effect of the Invention

[0008] According to the above aspect of the present invention, the surgeon can easily switch between the suction state and the water injection state with one finger, and furthermore, the entire suction device with water injection function can be made smaller in size. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a perspective view of a suction device 10 of the present embodiment. [Diagram 2] FIG. 2 is an explanatory diagram of a suction device 10A of a comparative example. [Diagram 3] Fig. 3A is a top view of the suction device 10 of this embodiment. Fig. 3B is a top view of the suction device 10 with the switch unit 12 removed. Fig. 3C is a side view of the suction device 10 of this embodiment. [Figure 4] Fig. 4A is a cross-sectional view of the suction device 10 in the water-injecting state, taken along line AA in Fig. 3A. Fig. 4B is a cross-sectional view of the suction device 10 in the suctioning state, taken along line AA in Fig. 3A. Fig. 4C is a cross-sectional view of the suction device 10 in the water-injecting state, taken along line BB in Fig. 3A. Fig. 4D is a cross-sectional view of the suction device 10 in the suctioning state, taken along line BB in Fig. 3A. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] At least the following points will become apparent from the description of this specification and the accompanying drawings.

[0011] Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. The same or equivalent components, members, etc. shown in each drawing are designated by the same reference numerals, and duplicated descriptions will be omitted as appropriate.

[0012] ===This embodiment=== <Definition of direction etc.> First, directions and the like in the suction device 10 of this embodiment will be defined with reference to FIG.

[0013] FIG. 1 is a perspective view of a suction device 10 of the present embodiment.

[0014] The direction from the distal end side to the proximal end side of the suction device 10 is defined as the "+X direction", and the opposite direction (i.e., the direction from the proximal end side to the distal end side of the suction device 10) is defined as the "-X direction". Here, the "distal end" refers to the end of the suction device 10 that is farther from the operator (surgeon) while the suction device 10 is in use, and the "proximal end" refers to the end of the suction device 10 that is closer to the operator (surgeon) while the suction device 10 is in use. In addition, among the directions perpendicular to the +X direction, the direction from the water injection tube 50 side to the suction tube 40 side is defined as the "+Y direction", and the opposite direction (i.e., the direction from the suction tube 40 side to the water injection tube 50 side) is defined as the "-Y direction". In addition, the direction perpendicular to the +X direction and the +Y direction, that is, the direction of the switch unit 12 relative to the main body unit 11 is defined as the "+Z direction", and the opposite direction (i.e., the direction of the main body unit 11 relative to the switch unit 12) is defined as the "-Z direction".

[0015] Each of the +X direction, -X direction, +Y direction, -Y direction, +Z direction, and -Z direction has a fixed orientation. Note that, rather than being directions with a fixed orientation as described above, both the +X direction and the -X direction are sometimes simply referred to as the "X direction." Similarly, both the +Y direction and the -Y direction are sometimes simply referred to as the "Y direction." Furthermore, both the +Z direction and the -Z direction are sometimes simply referred to as the "Z direction."

[0016] 1, in order to facilitate understanding of directions in the suction device 10, the +X direction, +Y direction, and +Z direction are each represented by a line segment with an arrow. Note that the intersection of these line segments with an arrow does not mean the origin of the coordinate system.

[0017] The above definitions of directions and the like are common to other embodiments of this specification unless otherwise specified.

[0018] <Summary> Next, referring again to FIG. 1 described above, an overview of the suction device 10 of this embodiment will be described.

[0019] The suction device 10 is a medical device used for suction and water injection. The suction device 10 is a suction device with a water injection function. Specifically, the suction device 10 has a function to suck and discharge blood, body fluids, cerebrospinal fluid, bone fragments, etc. that have accumulated in affected areas such as the brain of a human or animal or the inside of a wound (hereinafter sometimes referred to as the "suction function"), as well as a function to inject water into the affected area to clean the affected area (hereinafter sometimes referred to as the "water injection function").

[0020] By using the suction device 10 with a water injection function, the surgeon can hold a surgical instrument such as a scalpel or forceps in one hand while holding the suction device 10 in the other hand to repeatedly suction and clean the affected area. However, during particularly difficult surgical procedures, it is difficult for an assistant other than the surgeon to determine when to suction the affected area and when to clean the affected area. For this reason, if the suction device 10 with a water injection function is used, the surgeon can operate the suction device 10 with a water injection function with one hand at his or her own discretion. For this reason, even if there is no assistant, the surgeon can smoothly perform surgical procedures on the affected area using the suction device 10 with a water injection function.

[0021] The suction device 10 has a main body portion 11 , a switch portion 12 , a tip portion 30 , a suction tube 40 , a water injection tube 50 , and a junction tube 53 .

[0022] The main body 11 is the main body of the suction device 10. A water injection tube 50 and a suction tube 40 are connected to an end of the main body 11 on the +X direction side, and a tip 30 is connected to an end of the main body 11 on the -X direction side. The main body 11 houses a switch unit 12, and the switch unit 12 is exposed on the surface (upper surface) of the main body 11 on the +Z direction side.

[0023] The switch unit 12 is a part that is operated by the surgeon's finger to switch between a suction state and a water injection state in the suction device 10. As described above, the switch unit 12 is housed in the main body unit 11 so as to be exposed on the surface (upper surface) on the +Z direction side of the main body unit 11. Furthermore, the switch unit 12 is rotatably connected to the main body unit 11 on a rotation axis 27 (not shown in FIG. 1, see FIGS. 4C and 4D described later).

[0024] In the suction device 10 of this embodiment, when the switch unit 12 is located at a predetermined rotational position (hereinafter, sometimes referred to as the "first rotational position") with respect to the main body unit 11, the suction path of the suction device 10 is opened and the water injection path is closed, so that the suction device 10 is in a suction state. When the switch unit 12 is located at another rotational position (hereinafter, sometimes referred to as the "second rotational position") different from the first rotational position with respect to the main body unit 11, the suction path of the suction device 10 is closed and the water injection path is opened, so that the suction device 10 is in a suction state. The first rotational position is the state shown in Figs. 4B and 4D, which will be described later, and the second rotational position is the state shown in Figs. 4A and 4C, which will be described later. Details of the manner in which the suction device 10 switches between the suction state and the water injection state will be described later.

[0025] The tip portion 30 is a portion of the suction device 10 that is directed toward the affected area. The tip portion 30 is made of a material that can be bent freely and can maintain a certain shape when bent. In other words, the tip portion 30 is a flexible member. However, the tip portion 30 does not have to be a flexible member.

[0026] The tip portion 30 has an opening portion 31 and a connection portion 32 .

[0027] The opening 31 is a portion for taking in the suction target (hereinafter, sometimes simply referred to as "suction target"), such as blood, body fluid, cerebrospinal fluid, bone fragments, etc., accumulated in the affected area, into the inside of the tip portion 30. The opening 31 is also a portion for discharging cleaning water (hereinafter, sometimes simply referred to as "cleaning water"), such as water, distilled water, sterilized water, physiological saline, and aqueous drug solution, for cleaning the affected area, to the outside of the tip portion 30. In the suction device 10 of this embodiment, the opening 31 is formed at the end of the tip portion 30 on the -X direction side. However, the opening 31 may be formed on the side surface of the tip portion 30.

[0028] The connection part 32 is a part that connects the end of the tip part 30 on the +X direction side and the end of the main body part 11 on the -X direction side. The connection part 32 is detachable from the main body part 11. This makes the tip part 30 detachable from the main body part 11 and can be replaced with, for example, another tip part having a different diameter depending on the purpose. However, the tip part 30 does not have to have the connection part 32 and the tip part 30 may be fixed to the main body part 11 (that is, the tip part 30 does not have to be detachable from the main body part 11).

[0029] The tip portion 30 is formed so that the inside is hollow between the opening portion 31 and the connection portion 32, and fluids such as liquids and gases, and small solid pieces can freely pass through the inside. In the suction device 10 of this embodiment, the suction target is sucked through the tip portion 30, and cleaning water is injected through the tip portion 30.

[0030] The suction tube 40 is a tube through which the suction target passes. A flexible suction tube (not shown) is connected to an end 41 on the +X direction side of the suction tube 40, and the suction device 10 can have a suction function by a suction means such as a suction pump connected to the flexible suction tube. An end 42 on the -X direction side of the suction tube 40 (not shown in FIG. 1, see FIGS. 4A and 4B described later) is connected to the main body 11.

[0031] The suction tube 40 is formed to have a hollow interior so that the suction target can pass through. The suction path of the suction device 10 is formed by the internal path of the suction tube 40, suction paths (main body side suction path 13, switch side suction path 17, and main body side suction path 14 described below) formed in the main body 11 and the switch 12, and the internal path of the tip 30. The suction paths of the suction device 10 will be described in detail later.

[0032] The water injection pipe 50 is a pipe through which cleaning water passes. A water injection flexible tube (not shown) is connected to an end 51 on the +X direction side of the water injection pipe 50, and the suction device 10 can have a water injection function by a cleaning water supply source connected to the water injection flexible tube and held at a position higher than the suction device 10, or a liquid delivery means of a liquid delivery pump.

[0033] The water injection tube 50 is formed to have a hollow interior so that cleaning water can pass through. The water injection path of the suction device 10 is formed by the internal path of the water injection tube 50, the water injection paths (main body side water injection path 15, switch side water injection path 18, and main body side water injection path 16 described below) formed in the main body 11 and the switch 12, the internal path of the junction pipe 53 described below, and the internal path of the tip 30. The water injection paths of the suction device 10 will be described in detail later.

[0034] The junction pipe 53 is a pipe for merging the water injection paths formed in the main body 11 and the switch 12 with the path in the connection part 32 of the tip 30. The end of the junction pipe 53 on the +X direction side is connected to the main body 11, and the end of the junction pipe 53 on the -X direction side is connected to the connection part 32 of the tip 30. As a result, the path inside the tip 30 allows the suction target to pass in the suction state (a state in which the suction path is open and the water injection path is blocked), and allows the cleaning water to pass in the water injection state (a state in which the suction path is blocked and the water injection path is open). In other words, the path inside the tip 30 is a common path for the suction path and the water injection path. Therefore, the tip 30 directed to the affected area can be made smaller, and the surgical field of the affected area can be widened.

[0035] <Comparative Example> Next, before describing the details of the suction device 10 of this embodiment, a suction device 10A of a comparative example will be described with reference to FIG.

[0036] Fig. 2 is an explanatory diagram of a suction device 10A of a comparative example. For convenience, Fig. 2 shows a schematic diagram of only the water injection path of the suction device 10A. The description of the water injection path of the suction device 10A described later also applies to the suction path of the suction device 10A.

[0037] The suction device 10A is a suction device with a water injection function, similar to the suction device 10 of this embodiment, and has a water injection function in addition to the suction function. However, the suction device 10A can be switched between a suction state and a water injection state by operating the suction side button and the water injection side button with a finger, and the suction side valve and the water injection side valve are each operated.

[0038] Regarding operations related to the water injection state of suction device 10A, suction device 10A has water injection side operation button 12A, conversion mechanism 25, and valve .

[0039] Water injection side operation button 12A is an operation part for operating valve 26. The surgeon operates water injection side operation button 12A up and down. Conversion mechanism 25 is a mechanism that converts the up and down movement of water injection side operation button 12A into the longitudinal movement of water injection path 15A of valve 26 via rotational movement. Valve 26 is a member that switches water injection path 15A between an open state and a closed state.

[0040] In the suction device 10A of the comparative example, an elastic member (not shown) is arranged under the water injection side operation button 12A, and when the surgeon presses the water injection side operation button 12A downward with his / her finger, the water injection side operation button 12A moves downward against the elastic force of the elastic member. Then, the valve 26 moves from the closed state shown in FIG. 2 to the open state via the conversion mechanism 25 so that the water injection path 15A is opened. Also, when the surgeon (not shown) releases his / her finger from the water injection side operation button 12A, the water injection side operation button 12A moves upward due to the elastic force of the elastic member (not shown). Then, the valve 26 moves from the open state to the closed state shown in FIG. 2 so that the water injection path 15A is closed again via the conversion mechanism 25. Therefore, with regard to the operation related to the water injection state of the suction device 10A, the valve 26 operates to switch the water injection path 15A between the open state and the closed state.

[0041] In the suction device 10A of the comparative example, the suction path can be switched between an open state and a closed state by operating the suction side operation button, similar to the operation related to the water injection state described above, although not shown. Therefore, in the suction device 10A of the comparative example, it is necessary to operate the button with two or more fingers, and the operation of switching between the suction state and the water injection state becomes complicated. Furthermore, in the suction device 10A of the comparative example, the conversion mechanism 25 and the valve 26 are arranged inside the suction device 10A, so there is a limit to miniaturizing the entire suction device 10A.

[0042] <Details> In contrast to the suction device 10A of the comparative example, the suction device 10 of the present embodiment allows the surgeon to easily switch between the suction state and the water injection state with one finger. Furthermore, the suction device 10 of the present embodiment requires a small number of parts for switching between the suction state and the water injection state, and the entire suction device 10 can be made smaller. Therefore, the details of the suction device 10 will be described with reference to Figs. 3 and 4.

[0043] Fig. 3A is a top view of the suction device 10 of this embodiment. Fig. 3B is a top view of the suction device 10 with the switch unit 12 removed. Fig. 3C is a side view of the suction device 10 of this embodiment. Fig. 4A is a cross-sectional view of the suction device 10 in the water-injecting state, taken along line AA shown in Fig. 3A. Fig. 4B is a cross-sectional view of the suction device 10 in the suction state, taken along line AA shown in Fig. 3A. Fig. 4C is a cross-sectional view of the suction device 10 in the water-injecting state, taken along line BB shown in Fig. 3A. Fig. 4D is a cross-sectional view of the suction device 10 in the suction state, taken along line BB shown in Fig. 3A.

[0044] As shown in Fig. 3A and Fig. 3B, inside the main body 11, a main body side suction path 13 and a main body side suction path 14 are formed as a part of the suction path of the suction device 10, and a main body side water injection path 15 and a main body side water injection path 16 are formed as a part of the water injection path of the suction device 10. The main body side suction path 13 and the main body side suction path 14 are positioned so as to sandwich the switch part 12. Specifically, the main body side suction path 13 is positioned on the +X direction side of the switch part 12, and the main body side suction path 14 is positioned on the -X direction side of the switch part 12. Similarly, the main body side water injection path 15 and the main body side water injection path 16 are positioned so as to sandwich the switch part 12. Specifically, the main body side water injection path 15 is positioned on the +X direction side of the switch part 12, and the main body side water injection path 16 is positioned on the -X direction side of the switch part 12.

[0045] 3A, a switch part side suction path 17 is formed inside the switch part 12 as a part of the suction path of the suction device 10. The switch part side suction path 17 is located between the main body part side suction path 13 and the main body part side suction path 14.

[0046] As shown in Fig. 3B, the suction device 10 further includes a flexible tube 20 extending in the X direction. The flexible tube 20 is a pipe in which a switch unit side water injection path 18, which is a part of the water injection path of the suction device 10, is formed. The flexible tube 20 is made of a material that can be bent freely and can maintain a certain shape in the bent state. Furthermore, the flexible tube 20 can be crushed by an external force received from another member and can maintain a certain shape in the crushed state.

[0047] The switch portion side water injection path 18 formed in the flexible tube 20 has an end on the +X side connected to the main body side water injection path 15 and an end on the -X side connected to the main body side water injection path 16. In other words, the switch portion side water injection path 18 communicates with the main body side water injection path 15 and the main body side water injection path 16.

[0048] In the suction device 10 of this embodiment, the switch unit 12 has a protrusion 21, and the main body unit 11 has a protrusion 22. The protrusions 21 and 22 are portions for squeezing the flexible tube 20. As shown in Fig. 4C and Fig. 4D, the protrusion 21 protrudes in the -Z direction, and the protrusion 22 protrudes in the +Z direction. That is, the protrusions 21 and 22 protrude in a direction intersecting the direction in which the flexible tube 20 extends (X direction). This allows the protrusions 21 and 22 to squash the flexible tube 20 by pinching it, as shown in Fig. 4D.

[0049] However, the suction device 10 may have only one of the protruding portion 21 and the protruding portion 22. In other words, at least one of the main body portion 11 and the switch portion 12 may have a protruding portion.

[0050] 4B and 4D, when the switch unit 12 is located at the first rotation position relative to the main body unit 11, the switch unit side suction path 17 is located so as to communicate with the main body side suction path 13 and the main body side suction path 14 as shown in Fig. 4B. Also, as shown in Fig. 4D, the protrusions 21 and 22 crush the flexible tube 20, thereby blocking the switch unit side water injection path 18. In other words, when the switch unit 12 is located at the first rotation position relative to the main body unit 11, the suction path of the suction device 10 is opened and the water injection path is blocked (i.e., the suction device 10 is in a suction state).

[0051] 4A and 4C, when the switch unit 12 is located at a second rotation position different from the first rotation position with respect to the main body unit 11, the switch unit side suction path 17 is located so as to be disconnected from the main body side suction path 13 and the main body side suction path 14 as shown in Fig. 4A. Also, as shown in Fig. 4C, the protrusions 21 and 22 move in a direction away from the position where they crush the flexible tube 20, thereby opening the switch unit side water injection path 18. In other words, when the switch unit 12 is located at the second rotation position with respect to the main body unit 11, the suction path of the suction device 10 is closed and the water injection path is opened (i.e., the suction device 10 is in a water injection state).

[0052] In the suction device 10 of this embodiment, as shown in FIG. 3C, the switch unit 12 has a pressing portion 23 that can be pressed by an operator with one finger. When the operator presses a portion of the pressing portion 23 on the +X direction side, the switch unit 12 shifts from the first rotation position to the second rotation position. When the operator presses a portion of the pressing portion 23 on the -X direction side, the switch unit 12 shifts from the second rotation position to the first rotation position. In this way, in the suction device 10 of this embodiment, the operator can easily switch between the suction state and the water injection state with one finger.

[0053] When the switch unit 12 is located at the first rotation position, as shown in Fig. 4B, one end (end on the +X direction side) of the switch unit side suction path 17 is connected to one end (end on the -X direction side) of the main body side suction path 13, and the other end (end on the -X direction side) of the switch unit side suction path 17 is connected to one end (end on the +X direction side) of the main body side suction path 14. When the switch unit 12 is located at the second rotation position, as shown in Fig. 4A, the switch unit side suction path 17 is inclined by an angle between the first rotation position and the second rotation position, so that one end (end on the +X direction side) of the switch unit side suction path 17 is disconnected from one end (end on the -X direction side) of the main body side suction path 13, and the other end (end on the -X direction side) of the switch unit side suction path 17 is disconnected from one end (end on the +X direction side) of the main body side suction path 14.

[0054] As described above, in the suction device 10 of this embodiment, not only can the surgeon easily switch between the suction state and the water injection state with one finger, but also the entire suction device 10 can be made smaller in size.

[0055] In the suction device 10 of this embodiment, the switch unit 12 having the pressing portion 23 and the protruding portion 21 is integrally formed. This maintains the positional relationship between the pressing portion 23 and the protruding portion 21. Therefore, the protruding portion 21 can be moved by the amount of movement of the pressing portion 23 with one finger of the surgeon. Therefore, the suction device 10 of this embodiment does not require the conversion mechanism 25 or the valve 26 as in the suction device 10A of the comparative example, and the number of parts can be reduced. Furthermore, it is easy for the surgeon to intuitively grasp and it is possible to easily switch between the suction state and the water injection state.

[0056] In addition, an adjustment hole 24 that communicates with the switch portion side suction path 17 is formed in the pressing portion 23. The suction force in the suction path can be adjusted by blocking the adjustment hole 24 with a finger or by removing the finger.

[0057] ===Summary=== According to the present specification, there is provided a suction device with a water injection function having the following aspects.

[0058] (Aspect 1) Aspect 1 is a suction device 10 including a main body 11 in which a main body suction path 13, a main body suction path 14, a main body water injection path 15, and a main body water injection path 16 are formed, a switch portion 12 in which a switch portion suction path 17 located between the main body suction path 13 and the main body suction path 14 is formed and which is rotatably connected to the main body 11, and a flexible tube 20 in which a switch portion water injection path 18 communicating with the main body water injection path 15 and the main body water injection path 16 is formed. At least one of the main body 11 and the switch portion 12 has a protrusion protruding in a direction intersecting the extension direction of the flexible tube 20.

[0059] Furthermore, when the switch unit 12 is located in a first rotation position relative to the main body unit 11, the switch unit side suction path 17 is positioned so as to be in communication with the main body side suction path 13 and the main body side suction path 14, and the protrusion crushes the flexible tube 20, thereby blocking the switch unit side water injection path 18, and when the switch unit 12 is located in a second rotation position different from the first rotation position relative to the main body unit 11, the switch unit side suction path 17 is positioned so as to be out of communication with the main body side suction path 13 and the main body side suction path 14, and the protrusion moves in a direction away from the position where it crushes the flexible tube 20, thereby opening the switch unit side water injection path 18.

[0060] The "first main body side suction path" corresponds to the "main body side suction path 13" in the above-mentioned embodiment, the "second main body side suction path" corresponds to the "main body side suction path 14" in the above-mentioned embodiment, the "first main body side water injection path" corresponds to the "main body side water injection path 15" in the above-mentioned embodiment, and the "second main body side water injection path" corresponds to the "main body side water injection path 16" in the above-mentioned embodiment.

[0061] In the above-mentioned embodiment, the “protrusion” corresponds to the “protrusion 21” of the switch portion 12 or the “protrusion 22” of the main body portion 11.

[0062] According to the above-mentioned aspect, the surgeon can easily switch between the suction state and the water injection state with one finger, and furthermore, the entire suction device with water injection function can be made smaller in size.

[0063] (Aspect 2) In aspect 2, switch portion 12 has a protrusion 21 and a pressing portion 23 that can be pressed by the surgeon with one finger, and since switch portion 12 is integrally formed, the positional relationship between pressing portion 23 and protrusion 21 is maintained.

[0064] According to the above-mentioned embodiment, the entire suction device with water injection function can be made smaller. In addition, it is easy for the surgeon to intuitively understand that the protruding part 21 is moved by the same amount as the pressing part 23 is moved by the finger, and the suction state and the water injection state can be easily switched.

[0065] (Aspect 3) In aspect 3, when the surgeon presses the pressing portion 23 in a direction of rotation from the first rotation position to the second rotation position, the switch portion 12 transitions from the first rotation position to the second rotation position, and when the surgeon presses the pressing portion 23 in a direction of rotation from the second rotation position to the first rotation position, the switch portion 12 transitions from the second rotation position to the first rotation position.

[0066] According to the above-mentioned aspect, the surgeon can easily switch between the suction state and the water injection state with one finger, and furthermore, the entire suction device with water injection function can be made smaller in size.

[0067] (Aspect 4) In the fourth aspect, the pressing portion 23 is formed with an adjustment hole 24 that communicates with the switch portion side suction path 17 .

[0068] According to the above-described embodiment, the suction force in the suction path can be adjusted by closing the adjustment hole 24 with a finger or removing the finger.

[0069] (Aspect 5) In aspect 5, when the switch unit 12 is located in the first rotation position, one end of the switch unit side suction path 17 is connected to one end of the main body side suction path 13 and the other end of the switch unit side suction path 17 is connected to one end of the main body side suction path 14; when the switch unit 12 is located in the second rotation position, the switch unit side suction path 17 is inclined by an angle between the first rotation position and the second rotation position, so that one end of the switch unit side suction path 17 is disconnected from one end of the main body side suction path 13 and the other end of the switch unit side suction path 17 is disconnected from one end of the main body side suction path 14.

[0070] According to the above-mentioned aspect, the surgeon can easily switch between the suction state and the water injection state with one finger, and furthermore, the entire suction device with water injection function can be made smaller in size.

[0071] ===Other=== The above-mentioned embodiment is for the purpose of facilitating understanding of the present invention, and is not intended to limit the present invention. Furthermore, the present invention can be modified or improved without departing from the spirit of the present invention, and it goes without saying that the present invention includes equivalents thereof. [Explanation of symbols]

[0072] 10,10A suction device 11 Main body 12 Switch section 12A Water supply side operation button 13,14 Main unit side suction path 15,16 Water injection route on main body side 15A, 16A Water injection route 17 Switch side suction path 18 Switch side water injection path 20 Flexible Tube 21,22 Protrusion 23 Pressing section 24 Adjustment hole 25 Conversion Mechanism 26 Valve 27 Rotational Axis 30 Tip 31 Opening part 32 Connection 40 Suction tube 41,42 end 50 Water injection pipe 51,52 end 53 Confluence pipe

Claims

1. a main body in which a first main body suction path, a second main body suction path, a first main body water injection path, and a second main body water injection path are formed; a switch section having a suction path located between the first body section side suction path and the second body section side suction path, the switch section being rotatably connected to the body section; a flexible tube having a switch portion side water injection path formed therein, the switch portion side water injection path communicating with the first main body portion side water injection path and the second main body portion side water injection path; Equipped with At least one of the main body and the switch has a protruding portion protruding in a direction intersecting a direction in which the flexible tube extends, When the switch portion is located at a first rotation position with respect to the main body portion, the switch portion side suction path is positioned so as to communicate with the first main body portion side suction path and the second main body portion side suction path; The protrusion crushes the flexible tube, thereby blocking the water injection path on the switch portion side, When the switch portion is located at a second rotation position different from the first rotation position with respect to the main body portion, the switch portion side suction path is positioned so as to be non-communicating with the first main body portion side suction path and the second main body portion side suction path, The protrusion moves in a direction away from the position where the protrusion crushes the flexible tube, thereby opening the switch unit side water injection path. Suction device with water injection function.

2. The switch portion has the protruding portion and a pressing portion that can be pressed by an operator with one finger, The switch portion is integrally formed, so that the positional relationship between the pressing portion and the protruding portion is maintained. The suction device with water injection function according to claim 1.

3. When the surgeon presses the pressing portion in a direction of rotation from the first rotation position to the second rotation position, the switch portion transitions from the first rotation position to the second rotation position, When the surgeon presses the pressing portion in a direction of rotation from the second rotation position to the first rotation position, the switch portion transitions from the second rotation position to the first rotation position. The suction device with water injection function according to claim 2.

4. The pressing portion has an adjustment hole formed therein, the adjustment hole communicating with the switch portion side suction path. The suction device with water injection function according to claim 2.

5. When the switch portion is located at the first rotation position, one end of the switch portion side suction path is connected to one end of the first main body portion side suction path, and the other end of the switch portion side suction path is connected to one end of the second main body portion side suction path, When the switch portion is located at the second rotation position, The switch portion side suction path is inclined by an angle between the first rotation position and the second rotation position, the one end of the switch portion side suction path is disconnected from the one end of the first main body portion side suction path, and the other end of the switch portion side suction path is disconnected from the one end of the second main body portion side suction path; The suction device with water injection function according to claim 1.

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