Adjustable water valve device for arthroscope

Abstract

The utility model provides an adjustable water valve device for arthroscope, including arthroscope main part, flushing pipe, drain pipe, regulating valve, arthroscope tube, arthroscope sheath, flushing pipe and drain pipe are installed at one end of arthroscope main part, be equipped with power cord between flushing pipe and drain pipe, power cord is connected arthroscope main part, arthroscope tube is fixedly connected with arthroscope main part other end, and the arthroscope sheath is connected with the arthroscope main part. The arthroscope sheath is arranged outside the arthroscope tube in a sleeving mode and detachably connected with the arthroscope body, the adjusting valve is arranged at the end, away from the flushing tube, of the arthroscope body, and the flushing tube and the drainage tube are communicated with the adjusting valve. The adjusting valve comprises a valve body, a valve element and an adjusting part, the valve body is fixedly installed in the arthroscope body, the valve element is rotatably installed in the valve body, the adjusting part is rotatably installed on the outer wall of the valve element and used for controlling the valve element to rotate, the valve body is connected with the flushing pipe and the drainage pipe, and the adjusting part is connected with an adjusting button. Adjustment of liquid feeding and liquid discharging is achieved by controlling the valve element to rotate through the adjusting piece.

Description

Technical Field

[0001] The utility model relates to the technical field of arthroscopy, in particular to an adjustable water valve device for arthroscopy. Background Art

[0002] Arthroscopy is a rod-shaped device with a diameter of about 4mm for observing the internal structure of the joint cavity. It is an endoscope used to observe and diagnose joint diseases. The arthroscope is equipped with a camera at the end of a thin tube. When the thin tube is inserted into the joint, the internal structure of the joint will be displayed on the monitor through the image processor. Therefore, the internal structure of the joint can be directly observed. Arthroscopy is not only used for the diagnosis of diseases, but has also been widely used in the treatment of joint diseases.

[0003] When the arthroscope is in use, the affected area needs to be flushed, so a liquid knob valve will be set on the arthroscope. The surgeon usually holds the probe or grinding head with one hand and holds the lens with the other hand to maintain the field of view. Since the rear part of the lens is large, it needs to be fully held by one hand, and the surgeon can no longer rely on this hand to control the water flow in and out with the knob valve. The surgeon must rely on an assistant, or the surgeon's other hand must put down the operating tool to adjust the water flow switch. It is extremely inconvenient to adjust the switch during the operation, and it wastes time and increases the surgeon's operating steps.

[0004] The purpose of the utility model is to provide an adjustable water valve device for an arthroscopy to solve the problems mentioned in the above background technology. Utility Model Content

[0005] To achieve the above-mentioned purpose, the utility model provides an adjustable water valve device for arthroscope, comprising an arthroscope body, a flushing tube, a drain pipe, a regulating valve, a mirror tube, and a mirror sheath, wherein the flushing tube and the drain pipe are installed at one end of the arthroscope body, a power line is arranged between the flushing tube and the drain, the power line is connected to the arthroscope body, the mirror tube is fixedly connected to the other end of the arthroscope body, the mirror sheath is sleeved on the outside of the mirror tube and is detachably connected to the arthroscope body, the regulating valve is arranged inside the arthroscope body away from one end of the flushing tube, and the flushing tube and the drain pipe are connected to the regulating valve;

[0006] The regulating valve comprises a valve body, a valve core, and an adjusting member, wherein the valve body is fixedly mounted inside the arthroscope body, the valve core is rotatably mounted inside the valve body, the adjusting member is rotatably mounted on the outer wall of the valve core, the adjusting member is used to control the rotation of the valve core, the valve body is connected to the flushing pipe and the drain pipe, the adjusting member is connected to an adjusting button, and the arthroscope body is provided with a through slot for the adjusting button to move;

[0007] The adjusting member includes a driving wheel and a driven wheel, a transmission member, a fixing plate, two sleeves, and a control spring. The fixing plate is fixedly installed inside the arthroscopic body. The driving wheel and the driven wheel are both rotatably installed on the outer wall of the valve core. The driving wheel and the driven wheel are connected to a transmission member at opposite ends. The transmission member drives the driving wheel and the driven wheel to rotate. The two sleeves are staggeredly installed at the bottom of the adjusting button. The bottom of the sleeve passes through the fixing plate and is connected to the transmission member. The control spring is sleeved on the outer wall of the sleeve, and the upper and lower ends are respectively fixedly connected to the bottom of the adjusting button and the top of the fixing plate.

[0008] As a further improvement of the present invention, one end of the mirror tube is fixedly connected to the valve body, a camera is provided at the end of the mirror tube, and the arthroscopy body is provided with a control button for controlling the camera, and the control button is arranged close to the adjustment button.

[0009] As a further improvement of the utility model, the transmission member includes symmetrically installed connecting rods 1 and 2, the top end of the connecting rod 1 is movably connected to the bottom of the sleeve, and the bottom ends of the symmetrical connecting rods 1 are movably connected to the connecting rods 2, one of the connecting rods 2 is connected to a fixing ring, and the fixing ring is installed on the outer wall of the valve core, and a fixing bolt is fixedly installed on the fixing ring close to the drive, and the fixing bolt is fixedly connected to one side of the driving wheel, and the other connecting rod 2 is connected to the driven wheel.

[0010] As a further improvement of the utility model, a connecting ring is provided on the outer wall of the valve core, a limit block is movably installed on the connecting ring, and the inner ring of the driving wheel is provided with a plurality of tooth grooves, the tooth grooves cooperate with the limit block, and the tooth grooves are used to push the valve core connected to the connecting ring to rotate.

[0011] As a further improvement of the utility model, a movable groove is opened on the outer wall of the connecting ring, a limit spring is fixedly installed in the movable groove, one end of the limit block is movably installed in the movable groove, and the bottom of the other end is fixedly connected to the top of the limit spring, and the end of the limit block connected to the limit spring is tightly pressed in the tooth groove.

[0012] As a further improvement of the utility model, a plurality of liquid holes are provided on the valve core, and the regulating member controls the liquid holes to be connected with the flushing pipe and the drain pipe. The plurality of liquid holes are evenly distributed around the valve core, and each of the liquid holes is separated by a distance of one liquid hole.

[0013] As a further improvement of the present invention, a liquid channel is formed between the mirror tube and the mirror sheath, the liquid channel is connected to the liquid hole, and a plurality of drainage holes are also provided on the mirror sheath.

[0014] As a further improvement of the present invention, the end of the valve core away from the valve body is connected to a fixed joint, the outer wall of the fixed joint is fixedly connected to the inside of the arthroscope body, the end of the fixed joint away from the valve core extends out of the arthroscope body, and the portion of the outer wall extending out of the arthroscope body is symmetrically provided with mounting grooves, and a compression spring is symmetrically fixedly installed inside the mounting grooves, and a limiting ball is fixedly connected to the top of the compression spring, and a limiting hole matching the limiting ball is provided at one end of the sheath close to the arthroscope column, the limiting hole and the limiting ball are limited and fixed, and a liquid passage for liquid to pass through is provided inside the fixed joint.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The utility model is provided with a regulating valve. By pressing the regulating button, the control spring in the regulating member is squeezed, and the sleeve connected to the bottom of the regulating button pushes the transmission member to move, and the transmission member drives the driving wheel and the driven wheel to rotate. At this time, the tooth groove on the inner ring of the driving wheel and the limit block on the connecting ring are pressed tightly to push the entire valve core to rotate, and then the regulating button is released, and the control spring rebounds to push the sleeve on the regulating button to move toward the outside direction of the arthroscopy body, so that the transmission member connected to the sleeve drives the driving wheel and the driven wheel to rotate in the opposite direction, and at this time the inclined surface of the tooth groove of the driving wheel squeezes the limit block , so that the limit spring connected to the limit block is compressed. When the tooth groove slope is completely rotated to exceed the limit block, the limit block releases the restriction, and the limit spring rebounds to push the limit block into the tooth groove and fix it tightly. In summary, the valve core is controlled to rotate in the valve body by pressing the adjustment button, so that the liquid hole on the valve core is connected to the flushing pipe and the drain pipe, thereby realizing flushing and drainage. Since the adjustment button is located close to the camera control button, the thumb can be used to control the camera control button for image observation when using the arthroscope, and the index finger can be placed near the adjustment button to control flushing and drainage at any time.

[0017] 2. The utility model is provided with a limiting ball, and the sheath is inserted into the outside of the end of the arthroscope body extended out of the fixed joint. During the insertion process, the limiting ball is squeezed inside the sheath, so that the limiting ball shrinks into the installation groove, and the compression spring is squeezed and contracted. When the sheath moves to the limiting hole and is aligned with the installation groove, the limiting ball releases the restriction, and under the action of the rebound force of the compression spring, the limiting ball is pushed into the limiting hole for clamping and fixing. When disassembly is required, the limiting ball is pressed to move it into the installation groove, and then the sheath is pulled out from the fixed joint to realize quick disassembly between the sheath and the fixed joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the adjusting member of the utility model;

[0019] Figure 2 This is a schematic diagram of the planar structure of the adjusting member of the utility model;

[0020] Figure 3 This is a diagram showing the separation of the arthroscopy body and the scope sheath of the present invention;

[0021] Figure 4 For this utility model Figure 1 sectional view of

[0022] Figure 5 For this utility model Figure 2 Partial Section Figure 1 ;

[0023] Figure 6 For this utility model Figure 2 Partial Section Figure 2 .

[0024] In the figure: 1. arthroscopy body; 101. power cord; 102. control button; 2. flushing tube; 3. drain pipe; 4. mirror tube; 5. mirror sheath; 501. drain hole; 502. limit hole; 6. valve body; 7. valve core; 701. connecting ring; 702. movable groove; 703. limit spring; 704. limit block; 705. liquid hole; 8. driving wheel; 9. driven wheel; 10. fixing plate; 11. sleeve; 12. control spring; 13. adjustment button; 14. connecting rod one; 15. connecting rod two; 16. fixing ring; 17. fixing bolt; 18. liquid channel; 19. fixing joint; 20. limit ball; 21. compression spring; 22. mounting groove. DETAILED DESCRIPTION

[0025] In order to facilitate the understanding of the present invention, the present invention will be described in more detail below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which the present invention belongs. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0027] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0028] Embodiment 1:

[0029] See also Figure 1-6 The utility model provides an adjustable water valve device for an arthroscope, comprising an arthroscope body 1, a flushing tube 2, a drain pipe 3, a regulating valve, a mirror tube 4, and a mirror sheath 5, wherein the flushing tube 2 and the drain pipe 3 are installed at one end of the arthroscope body 1, a power line 101 is provided between the flushing tube 2 and the drain, the power line 101 is connected to the arthroscope body 1, the mirror tube 4 is fixedly connected to the other end of the arthroscope body 1, the mirror sheath 5 is sleeved on the outside of the mirror tube 4 and is detachably connected to the arthroscope body 1, the regulating valve is arranged inside the arthroscope body 1 away from one end of the flushing tube 2, and the flushing tube 2 and the drain pipe 3 are connected to the regulating valve;

[0030] The regulating valve comprises a valve body 6, a valve core 7, and an adjusting member, wherein the valve body 6 is fixedly mounted inside the arthroscope body 1, the valve core 7 is rotatably mounted inside the valve body 6, the adjusting member is rotatably mounted on the outer wall of the valve core 7, the adjusting member is used to control the rotation of the valve core 7, the valve body 6 is connected to the flushing pipe 2 and the drain pipe 3, the adjusting member is connected to an adjusting button 13, and the arthroscope body 1 is provided with a through slot for the adjusting button 13 to move;

[0031] The adjusting member includes a driving wheel 8 and a driven wheel 9, a transmission member, a fixing plate 10, two sleeves 11, and a control spring 12. The fixing plate 10 is fixedly installed inside the arthroscopic body 1. The driving wheel 8 and the driven wheel 9 are both rotatably installed on the outer wall of the valve core 7. The driving wheel 8 and the driven wheel 9 are connected to a transmission member at opposite ends. The transmission member drives the driving wheel 8 and the driven wheel 9 to rotate. The two sleeves 11 are staggeredly installed at the bottom of the adjusting button 13. The bottom of the sleeve 11 passes through the fixing plate 10 and is connected to the transmission member. The control spring 12 is sleeved on the outer wall of the sleeve 11, and the upper and lower ends are respectively fixedly connected to the bottom of the adjusting button 13 and the top of the fixing plate 10.

[0032] One end of the mirror tube 4 is fixedly connected to the valve body 6 , a camera is provided at the end of the mirror tube 4 , and the arthroscopy body 1 is provided with a control button 102 for controlling the camera, and the control button 102 is arranged close to the adjustment button 13 .

[0033] The transmission member includes symmetrically installed connecting rods 14 and 15. The top end of the connecting rod 14 is movably connected to the bottom of the sleeve 11, and the bottom ends of the symmetrical connecting rods 14 are movably connected to the connecting rods 15. One of the connecting rods 15 is connected to a fixing ring 16, and the fixing ring 16 is installed on the outer wall of the valve core 7. A fixing bolt 17 is fixedly installed on the fixing ring 16 close to the drive, and the fixing bolt 17 is fixedly connected to one side of the driving wheel 8. The other connecting rod 2 15 is connected to the driven wheel 9.

[0034] A connecting ring 701 is provided on the outer wall of the valve core 7, and a limit block 704 is movably installed on the connecting ring 701. The inner ring of the driving wheel 8 is provided with a plurality of tooth grooves, which cooperate with the limit block 704 and are used to push the valve core 7 connected to the connecting ring 701 to rotate.

[0035] A movable groove 702 is provided on the outer wall of the connecting ring 701, and a limit spring 703 is fixedly installed in the movable groove 702. One end of the limit block 704 is movably installed in the movable groove 702, and the bottom of the other end is fixedly connected to the top of the limit spring 703. The end of the limit block 704 connected to the limit spring 703 is tightly pressed against the tooth groove.

[0036] The valve core 7 is provided with a plurality of liquid holes 705 , and the regulating member controls the liquid holes 705 to be connected with the flushing pipe 2 and the drain pipe 3 . The plurality of liquid holes 705 are evenly distributed around the valve core 7 , and each of the liquid holes 705 is separated by a distance of one liquid hole 705 .

[0037] A liquid channel 18 is formed between the mirror tube 4 and the mirror sheath 5, and the liquid channel 18 is connected to the liquid hole 705. The mirror sheath 5 is also provided with a plurality of drainage holes 501.

[0038] When in use, by pressing the adjustment button 13, the control spring 12 in the adjustment member is squeezed, and the sleeve 11 connected to the bottom of the adjustment button 13 pushes the connecting rod 14 to move to one side, and the connecting rod 14 pushes the connecting rod 2 15 to drive the driving wheel 8 and the driven wheel 9 to rotate on the valve core 7. At this time, the tooth groove on the inner ring of the driving wheel 8 and the limit block 704 on the connecting ring 701 are pressed tightly to push the entire valve core 7 to rotate, and then the adjustment button 13 is released, and the control spring 12 rebounds to push the adjustment button 13 The sleeve 11 on the arthroscopy body 1 moves toward the outside of the arthroscopy body 1, so that the connecting rod 14 connected to the sleeve 11 drives the driving wheel 8 and the driven wheel 9 on the connecting rod 2 15 to rotate in the opposite direction. At this time, the inclined surface of the tooth groove of the driving wheel 8 squeezes the limit block 704, so that the limit spring 703 connected to the limit block 704 is compressed. When the inclined surface of the tooth groove is completely rotated to exceed the limit block 704, the limit block 704 is released from the restriction, and the limit spring 703 rebounds to push the limit block 704 into the tooth groove to abut against it. Tightly fixed. In summary, the valve core 7 is controlled to rotate in the valve body 6 by pressing the adjustment button 13, so that the liquid hole 705 on the valve core 7 is connected to the flushing tube 2 and the drain pipe 3, thereby realizing flushing and drainage. Since the adjustment button 13 is located close to the camera control button 102, the thumb can be used to control the camera control button 102 for image observation when using the arthroscopy, and the index finger can be placed near the adjustment button 13 to facilitate the control of flushing and drainage at any time. In this embodiment, one of the liquid holes 705 on the valve core 7 is initially connected to the flushing tube 2, and the outer wall between the liquid holes 705 on the valve core 7 blocks the drain pipe 3. At this time, only liquid is introduced but not discharged. After the adjustment button 13 is pressed and the valve core 7 is rotated, the liquid hole 705 turns to connect with the drain pipe 3, and the outer wall of the valve core 7 blocks the flushing tube 2 channel. At this time, only liquid is discharged but not introduced. The pressing design can conveniently control the liquid inlet and discharge, wherein the driven wheel 9 only rotates on the outer wall of the valve core 7 without driving the valve core 7 to rotate.

[0039] Embodiment 2:

[0040] See also Figure 1 , Figure 4 The end of the valve core 7 away from the valve body 6 is connected to a fixing joint 19, the outer wall of the fixing joint 19 is fixedly connected to the inside of the arthroscope body 1, the end of the fixing joint 19 away from the valve core 7 extends out of the arthroscope body 1, and the outer wall of the part extending from the arthroscope body 1 is symmetrically provided with mounting grooves 22, and the interior of the symmetrical mounting grooves 22 is fixedly installed with a compression spring 21, and the top of the compression spring 21 is fixedly connected to a limiting ball 20, and the end of the sheath 5 close to the arthroscope column is provided with a limiting hole 502 matching the limiting ball 20, the limiting hole 502 is fixed with the limiting ball 20 for limiting, and the interior of the fixing joint 19 is provided with a liquid through groove for liquid to pass through.

[0041] When in use, the sheath 5 is inserted into the outside of the end of the arthroscope body 1 that extends out of the fixed joint 19. During the insertion process, the limiting ball 20 is squeezed inside the sheath 5, so that the limiting ball 20 shrinks into the installation groove 22, and the compression spring 21 is squeezed and contracted. When the sheath 5 moves to the limiting hole 502 and is aligned with the installation groove 22, the limiting ball 20 is released from the restriction, and the limiting ball 20 is pushed into the limiting hole 502 under the action of the rebound force of the compression spring 21 for clamping and fixing. When disassembly is required, press the limiting ball 20 to move it into the installation groove 22, and then pull the sheath 5 out from the fixed joint 19 to achieve quick disassembly between the sheath 5 and the fixed joint 19.

[0042] The above description of the utility model in combination with the accompanying drawings is an exemplary description. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as the non-substantial improvements are made by adopting the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. An adjustable water valve device for arthroscopy, characterized in that: The arthroscope comprises an arthroscope body (1), a flushing tube (2), a drain pipe (3), a regulating valve, a mirror tube (4), and a mirror sheath (5), wherein the flushing tube (2) and the drain pipe (3) are installed at one end of the arthroscope body (1), a power line (101) is provided between the flushing tube (2) and the drain pipe, and the power line (101) is connected to the arthroscope body (1), the mirror tube (4) is fixedly connected to the other end of the arthroscope body (1), the mirror sheath (5) is sleeved on the outside of the mirror tube (4) and is detachably connected to the arthroscope body (1), the regulating valve is arranged inside the arthroscope body (1) away from one end of the flushing tube (2), and the flushing tube (2) and the drain pipe (3) are connected to the regulating valve; The regulating valve comprises a valve body (6), a valve core (7), and a regulating member, wherein the valve body (6) is fixedly mounted inside the arthroscope body (1), the valve core (7) is rotatably mounted inside the valve body (6), the regulating member is rotatably mounted on the outer wall of the valve core (7), and the regulating member is used to control the rotation of the valve core (7), the valve body (6) is connected to the flushing pipe (2) and the drain pipe (3), the regulating member is connected to an regulating button (13), and the arthroscope body (1) is provided with a through groove for the movement of the regulating button (13); The adjusting member comprises a driving wheel (8) and a driven wheel (9), a transmission member, a fixing plate (10), two sleeves (11), and a control spring (12); the fixing plate (10) is fixedly mounted inside the arthroscopy body (1); the driving wheel (8) and the driven wheel (9) are both rotatably mounted on the outer wall of the valve core (7); the driving wheel (8) and the driven wheel (9) are connected to a transmission member at opposite ends thereof; the transmission member drives the driving wheel (8) and the driven wheel (9) to rotate; the two sleeves (11) are staggeredly mounted on the bottom of the adjusting button (13); the bottom of the sleeve (11) passes through the fixing plate (10) and is connected to the transmission member; the control spring (12) is sleeved on the outer wall of the sleeve (11), and the upper and lower ends thereof are respectively fixedly connected to the bottom of the adjusting button (13) and the top of the fixing plate (10).

2. The adjustable water valve device for arthroscopy according to claim 1, characterized in that: One end of the mirror tube (4) is fixedly connected to the valve body (6), a camera is provided at the end of the mirror tube (4), and the arthroscopy body (1) is provided with a control button (102) for controlling the camera, and the control button (102) is arranged close to the adjustment button (13).

3. The adjustable water valve device for arthroscopy according to claim 1, characterized in that: The transmission member comprises a symmetrically mounted connecting rod 1 (14) and a connecting rod 2 (15), the top end of the connecting rod 1 (14) being movably connected to the bottom end of the sleeve (11), and the bottom ends of the symmetrical connecting rods 1 (14) being movably connected to the connecting rod 2 (15), one of the connecting rods 2 (15) being connected to a fixing ring (16), the fixing ring (16) being mounted on the outer wall of the valve core (7), a fixing bolt (17) being fixedly mounted on the fixing ring (16) close to the drive, the fixing bolt (17) being fixedly connected to one side of the driving wheel (8), and the other connecting rod 2 (15) being axially connected to the driven wheel (9).

4. The adjustable water valve device for arthroscopy according to claim 3, characterized in that: A connecting ring (701) is provided on the outer wall of the valve core (7), a limit block (704) is movably mounted on the connecting ring (701), and a plurality of tooth grooves are provided on the inner ring of the driving wheel (8), the tooth grooves cooperate with the limit block (704), and the tooth grooves are used to drive the valve core (7) connected to the connecting ring (701) to rotate.

5. The adjustable water valve device for arthroscopy according to claim 4, characterized in that: A movable groove (702) is provided on the outer wall of the connecting ring (701), a limit spring (703) is fixedly installed in the movable groove (702), one end of the limit block (704) is movably installed in the movable groove (702), and the bottom of the other end is fixedly connected to the top of the limit spring (703), and the end of the limit block (704) connected to the limit spring (703) is tightly pressed against the tooth groove.

6. The adjustable water valve device for arthroscopy according to claim 1, characterized in that: The valve core (7) is provided with a plurality of liquid holes (705), and the regulating member controls the liquid holes (705) to be connected with the flushing pipe (2) and the drain pipe (3). The plurality of liquid holes (705) are evenly distributed around the valve core (7), and each of the liquid holes (705) is separated by a distance of one liquid hole (705).

7. The adjustable water valve device for arthroscopy according to claim 6, characterized in that: A liquid channel (18) is formed between the mirror tube (4) and the mirror sheath (5), the liquid channel (18) is connected to the liquid hole (705), and a plurality of drainage holes (501) are also provided on the mirror sheath (5).

8. The adjustable water valve device for arthroscopy according to claim 1, characterized in that: The end of the valve core (7) away from the valve body (6) is connected to a fixed joint (19), and the outer wall of the fixed joint (19) is fixedly connected to the inside of the arthroscope body (1). The end of the fixed joint (19) away from the valve core (7) extends outside the arthroscope body (1), and the outer wall of the portion extending from the arthroscope body (1) is symmetrically provided with mounting grooves (22), and the interior of the symmetrical mounting grooves (22) is fixedly installed with a compression spring (21), and the top of the compression spring (21) is fixedly connected to a limiting ball (20), and the end of the sheath (5) close to the arthroscope column is provided with a limiting hole (502) matching the limiting ball (20), and the limiting hole (502) is fixedly fixed with the limiting ball (20), and the fixing joint (19) is provided with a liquid through groove for liquid to pass through.

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