Liquid supply device and endoscope system

Abstract

The utility model relates to a liquid supply device and an endoscope system. The liquid supply device comprises a liquid supply pipeline, the liquid inlet end of the liquid supply pipeline is used for being communicated with a liquid container, and the liquid outlet end of the liquid supply pipeline is used for being communicated with a liquid inlet of a surgical instrument; one part of the liquid supply pipeline is used for being matched with a liquid conveyor, so that liquid in the liquid supply pipeline can flow from the liquid inlet end to the liquid outlet end and can be decompressed; the check valve is used for being arranged between the part of the liquid supply pipeline and the surgical instrument, and the check valve is used for preventing liquid from flowing back. The liquid supply pipeline can supply liquid to the surgical instrument in real time, and the pressure relief function can be achieved after liquid supply is finished.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of endoscopes, in particular to a liquid supply device and an endoscope system. BACKGROUND

[0002] In surgery, an endoscope is often used to observe the tissue in a cavity. The endoscope comprises an elongated tubular body, which is provided with a camera at the distal end and an instrument channel is formed in the tubular body. A surgical instrument is arranged in the instrument channel, and then the surgical instrument can perform surgery in the cavity.

[0003] In a common digestive tract surgery, in order to facilitate the removal of the target site, it is often necessary to inject, for example, normal saline into the surgical instrument by using a syringe, so that the target position can be protruded. After removing a part, if the liquid leaks from the original protruding part, it is necessary to use the syringe to supplement the liquid again, so that the target position can be protruded.

[0004] In the current surgery, the doctor usually operates the endoscope and the instrument, and other people such as nurses or assistant doctors use the syringe to inject and supplement the liquid. The operation is relatively complicated, which greatly affects the accuracy of the surgical operation and the effect of the surgery. INVENTION CONTENTS

[0005] In one aspect, the present application provides a liquid supply device, which comprises: a liquid supply pipeline, a liquid inlet end of the liquid supply pipeline being used to communicate with a liquid container, and a liquid outlet end of the liquid supply pipeline being used to communicate with a liquid inlet of a surgical instrument; a part of the liquid supply pipeline being used to cooperate with a liquid delivery device, so that the liquid in the liquid supply pipeline can flow from the liquid inlet end to the liquid outlet end and can be depressurized; and a check valve being arranged between the part of the liquid supply pipeline and the surgical instrument, and the check valve being used to prevent the liquid from flowing back.

[0006] By arranging the liquid supply pipeline, the liquid can be supplied to the surgical instrument in real time, and the depressurization function can be realized after the liquid supply is completed, so as to reduce the excess liquid drops discharged after the liquid supply is completed; by arranging the check valve, the liquid can be prevented from flowing back, so as to prevent the liquid container from being contaminated. The liquid supply device is simple to operate, and when used in surgery, the operation burden of the user can be reduced, which is beneficial to improving the accuracy of the surgical operation and improving the effect of the surgery.

[0007] In some embodiments, the liquid supply device further comprises a liquid delivery device, and the part of the liquid supply pipeline is a peristaltic tube, and the liquid delivery device can drive the peristaltic tube to drive the liquid in the peristaltic tube.

[0008] In this way, the liquid supply device is reliable in liquid supply, and the reverse operation can be easily realized.

[0009] In some embodiments, the liquid delivery device comprises a rotating disc and a plurality of rotors arranged on the outer periphery of the rotating disc; when the rotating disc rotates forwardly, the rotors in the effective rotation angle area of the rotating disc can press the peristaltic tube to push the liquid in the peristaltic tube to flow from the liquid inlet end to the liquid outlet end; when the rotating disc rotates reversely, the rotors in the effective rotation angle area of the rotating disc can push the liquid in the peristaltic tube to flow from the liquid outlet end to the liquid inlet end.

[0010] In this way, the liquid delivery device has simple and effective structure and stable and reliable operation.

[0011] In some embodiments, the liquid delivery device is configured to have the reverse rotation time of the rotating disc be 0.15-0.5 s.

[0012] In this way, the pressure can be effectively released, and the liquid backflow distance can be controlled to effectively prevent the backflow from contaminating the liquid container.

[0013] In some embodiments, the liquid delivery device comprises a pump body for controlling the liquid in the liquid supply pipeline and a control host for driving the pump body; the control host comprises a foot switch for controlling the working mode of the pump body.

[0014] In this way, the working mode of the pump body can be controlled by the foot switch during operation.

[0015] In some embodiments, the check valve comprises a valve shell, a valve core and an elastic member; the valve shell is provided with a valve cavity and a liquid inlet hole and a liquid outlet hole respectively communicating with the valve cavity; the valve core is arranged in the valve cavity; and the elastic member is used to drive the valve core to block the liquid inlet hole.

[0016] In this way, the check valve is a one-way valve, and automatic adjustment can be realized. The liquid supply device is convenient to use.

[0017] In some embodiments, the check valve is detachably connected to the luer joint of the surgical instrument, so that the liquid supply pipeline can be communicated with the surgical instrument through the check valve.

[0018] In this way, the liquid supply pipeline can be configured to be relatively short. When the check valve is closed, the surgical instrument and the liquid supply pipeline can be cut off.

[0019] In some embodiments, the check valve is arranged between the liquid outlet end and the liquid delivery device, and the check valve is arranged close to the liquid outlet end along the liquid supply pipeline relative to the liquid delivery device.

[0020] In this way, the liquid outlet end is easy to be connected to the surgical instrument; at the same time, the check valve close to the liquid outlet end helps to prevent the liquid in the surgical instrument, especially the liquid from the human body, from flowing back to the liquid supply pipeline, so as to ensure the cleanliness of the liquid supply pipeline.

[0021] In some embodiments, the liquid supply pipeline comprises a first connecting pipe connected between the check valve and the liquid delivery device, a first connector provided on the check valve, and a second connector provided on the first connecting pipe and detachably connected to the first connector.

[0022] In this way, the liquid supply pipeline can be manufactured separately and then assembled easily.

[0023] In some embodiments, the liquid supply device further comprises a liquid container, and the liquid supply pipeline comprises a second connecting pipe connected between the liquid delivery device and the liquid container.

[0024] In this way, the liquid supply device is integrated and can be directly applied to the surgical instrument.

[0025] In another aspect, the present application provides an endoscope system, comprising: an endoscope; a surgical instrument arranged in a channel of the endoscope; and the liquid supply device as described above.

[0026] By arranging the liquid supply device, the endoscope system is easy to operate, can supply liquid in real time, can continue to drain liquid after stopping, and can avoid backflow pollution. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 FIG. 1 is a schematic structural diagram of an endoscope system according to one or more embodiments;

[0028] Figure 2 FIG. 2 is a structural schematic diagram of an endoscope and a surgical instrument according to one or more embodiments;

[0029] Figure 3 FIG. 3 is a schematic exploded view of a liquid supply device and a surgical instrument according to one or more embodiments;

[0030] Figure 4 FIG. 4 is a structural schematic diagram of a pump body and a liquid supply pipeline according to one or more embodiments;

[0031] Figure 5 FIG. 5 is a schematic circuit block diagram of a control host according to one or more embodiments;

[0032] Figure 6 FIG. 6 is a schematic assembly diagram of a check valve and a connector according to one or more embodiments;

[0033] Figure 7 FIG. 7 is a schematic structural diagram of an endoscope system according to one or more embodiments;

[0034] Figure 8 FIG. 8 is a schematic exploded view of a liquid supply device and a surgical instrument according to one or more embodiments;

[0035] Figure 9Schematic assembly view of the check valve and the joint according to one or more embodiments.

[0036] Figure 10 Schematic assembly view of the check valve and the joint according to one or more embodiments.

[0037] BRIEF DESCRIPTION OF DRAWINGS 1, liquid supply pipeline; 11, first connecting pipe; 12, second connecting pipe; 13, third connecting pipe; 14, peristaltic pipe; 2, liquid delivery device; 21, pump body; 211, rotating disc; 212, rotor; 213, rotor shaft; 214, stop block; 22, control host; 221, foot switch; 222, motor; 223, processor; 3, check valve; 301, valve cavity; 302, liquid inlet hole; 303, liquid outlet hole; 31, valve shell; 32, valve core; 33, elastic member; 4, liquid container; 51, first joint; 52, second joint; 53, third joint; 54, fourth joint; 55, fifth joint; 56, sixth joint; 57, seventh joint; 58, eighth joint;

[0038] 100, liquid supply device; 200, surgical instrument; 210, liquid inlet; 300, endoscope; 310, forceps channel; 400, endoscope system. DETAILED DESCRIPTION

[0039] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application can be practiced in a variety of ways beyond the specific embodiments described herein without departing from the spirit of the present application, and it is intended that the present application cover all modifications and variations of this application within the scope of the appended claims.

[0040] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0041] In the present application, unless specifically defined otherwise, a first feature "on" or "under" a second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact with an intermediate medium. Also, a first feature "over", "above" and "on top of" a second feature can mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. A first feature "under", "below" and "underneath" a second feature can mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is horizontally lower than the second feature.

[0042] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and should not be construed as indicating or implying relative importance or an indicated number of technical features. Thus, a feature defined with "first", "second" can explicitly or implicitly include at least one of the features. For example, a first joint can also be referred to as a second joint, and a second joint can also be referred to as a first joint. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically defined.

[0043] In the present application, unless specifically defined otherwise, the terms "connected", "connected", etc. should be interpreted broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be flexible connection, or rigid connection in at least one direction; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or directly connected while there is an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically defined. The terms "installation", "setting", "fixing", etc. can be interpreted broadly as connection. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0044] It should be noted that in the present application, the distal end and the proximal end are based on the operator, the end close to the operator is the proximal end or the proximal end part, and the end away from the operator is the distal end or the distal end part. The side facing the operator is the proximal side or the proximal side, and the side away from the operator is the distal side or the distal side. In addition, the distal direction and the proximal direction represent two directions; the distal-proximal direction is parallel to the distal direction and the proximal direction, and the distal-proximal direction does not specifically indicate the forward direction or the reverse direction.

[0045] Reference Figure 1 , Figure 1An endoscope system in the present application is shown. In an exemplary embodiment, the endoscope system 400 comprises an endoscope 300, a surgical instrument 200 and a liquid supply device 100. In some embodiments, the endoscope system 400 is configured with a liquid container 4 and a liquid delivery device 2, and the components of the endoscope system 400 can be assembled before use or during use. In other embodiments, the liquid container 4 and / or the liquid delivery device 2 can be integrated in the liquid supply device 100.

[0046] In combination Figure 2 As shown, the endoscope 300 is provided with a channel 310 extending to the distal end. A portion of the surgical instrument 200 can be inserted into the channel 310 to perform surgical actions such as cutting at the distal side of the endoscope 300; the handle of the surgical instrument 200 remains outside the endoscope 300. The surgical instrument 200 is provided with a liquid channel, which includes a liquid inlet 210, which can be provided near the handle.

[0047] As shown in FIG. 1, the present application provides a liquid supply device 100. The liquid supply device 100 comprises a liquid supply line 1 and a check valve 3. Figure 1 Figure 3 As shown in FIG. 1, the present application provides a liquid supply device 100. The liquid supply device 100 comprises a liquid supply line 1 and a check valve 3.

[0048] The liquid inlet end of the liquid supply line 1 is used to connect to the liquid container 4. The liquid supply line 1 can be detachably connected to the liquid container 4, and can extend below the liquid level. The liquid supply line 1 can also be fixed to the liquid container 4, for example, connected to the bottom of the liquid container 4. The liquid outlet end of the liquid supply line 1 is used to connect to the liquid inlet 210 of the surgical instrument 200, so that the liquid can be supplied to the surgical instrument 200. The liquid supply line 1 can be detachably connected to the surgical instrument 200.

[0049] A portion of the liquid supply line 1 is used to cooperate with the liquid delivery device 2, so that the liquid in the liquid supply line 1 can flow from the liquid inlet end to the liquid outlet end and be depressurized. In some embodiments, the liquid delivery device 2 comprises a pump that can both supply liquid and depressurize. In other embodiments, the liquid delivery device 2 can comprise two pumps connected in parallel, one for supplying liquid and one for depressurizing, and the working state of the two pumps can be controlled. The liquid delivery device 2 can drive the liquid in the liquid supply line 1 to supply liquid to the surgical instrument 200 in real time, and after the supply of liquid is completed, the liquid delivery device 2 can depressurize the liquid in the liquid supply line 1. The liquid supply line 1 can effectively supply liquid, and after the supply of liquid is completed, the excess liquid drops are reduced due to the depressurization.

[0050] ​The check valve 3 is arranged in the liquid supply pipeline 1. For example, the check valve 3 can be arranged between the peristaltic tube 14 of the liquid supply pipeline 1 and the surgical instrument 200 when the peristaltic tube 14 is used to cooperate with the liquid delivery device 2. The direction in which the liquid in the liquid supply pipeline 1 flows from the liquid inlet end to the liquid outlet end is the forward flow direction. The check valve 3 is used to prevent the liquid from flowing back, thereby avoiding the pollution of the liquid container 4. The check valve 3 can have an open state and a closed state. The check valve 3 in the open state can allow the forward flow of the liquid, and the check valve 3 in the closed state can prevent the backflow of the liquid.

[0051] In an embodiment, another part of the liquid supply pipeline 1 is a hose, and the check valve 3 can be a clamp. The clamp can clamp and close the hose to achieve the closed state in which the forward flow of the liquid is also cut off. Opening the clamp can achieve the open state.

[0052] The liquid supply device 100 is easy to operate, and further, the endoscope system 400 is easy to operate. When the doctor operates the endoscope 300 and the surgical instrument 200 with two hands respectively, the liquid supply device 100 can be used to supply liquid in real time, avoid stopping and then continuing to drain liquid, and further avoid backflow pollution. The operation burden of the user during the surgery is reduced, which is conducive to improving the accuracy of the surgical operation and improving the surgical effect.

[0053] In combination Figure 4 As shown, in some embodiments, the liquid supply device 100 further includes the liquid delivery device 2. The pump body 21 of the liquid delivery device 2 can be a peristaltic pump, such as a mechanical peristaltic pump or a magnetic peristaltic pump. A part of the liquid supply pipeline 1 is a peristaltic tube 14. The pump body 21 of the liquid delivery device 2 can drive the peristaltic tube 14 to drive the liquid in the peristaltic tube 14. The pump body 21 does not contact the liquid, and the liquid supply device 100 can reliably supply liquid. In another aspect, the peristaltic tube 14 can be regarded as a part of the liquid delivery device 2, or other types of pump bodies 21 are connected between the first connecting tube 11 and the second connecting tube 12 of the liquid supply pipeline 1.

[0054] The peristaltic pump can drive the liquid in the peristaltic tube 14 to flow forward when the peristaltic pump is operated in the forward direction, for example Figure 4 The liquid pressure on the left side of the pump body 21 increases, which can ensure effective liquid injection. The liquid pressure on the right side decreases to extract the liquid from the liquid container 4. The peristaltic pump can be easily operated in the reverse direction, and the liquid in the liquid supply pipeline 1 can be depressurized when the peristaltic pump is operated in the reverse direction.

[0055] The liquid delivery device 2 includes a rotating disc 211 and a plurality of rotors 212 arranged on the outer periphery of the rotating disc 211. The liquid delivery device 2 further includes a stopper 214. These parts of the liquid delivery device 2 can constitute the pump body 21. The stopper 214 pushes against one side of the peristaltic tube 14, and the rotors 212 are located on the other side of the peristaltic tube 14. Figure 4The distance between the uppermost rotor 212 and the stopper 214 is less than the natural state pipe diameter of the peristaltic tube 14. The corner area of the peristaltic tube 14 squeezed by the rotor 212 in the rotating disc 211 can be called the effective corner area. By designing the length of the peristaltic tube 14 wound on the rotating disc 211, the angle of the effective corner area can be adjusted. For example, it can be ensured that there is always at least one rotor 212 in the effective corner area.

[0056] Figure 4 In the M direction or counterclockwise direction, the rotating disc 211 rotates forward, and the rotor 212 in the effective corner area of the rotating disc 211 can crush the peristaltic tube 14 to push the liquid in the peristaltic tube 14 from the liquid inlet end to the liquid outlet end. When the rotating disc 211 reverses, the rotor 212 in the effective corner area of the rotating disc 211 can push the liquid in the peristaltic tube 14 from the liquid outlet end to the liquid inlet end. The liquid delivery device 2 has simple and effective structure and stable and reliable operation.

[0057] The rotor 212 is rotatably connected to the rotating disc 211 through the rotor shaft 213. Optionally, the rotor shaft 213 is fixed to the rotating disc 211 and rotatably connected to the rotor 212.

[0058] In some embodiments, the liquid delivery device 2 includes a pump body 21 for controlling the liquid in the liquid supply pipeline 1 and a control host 22 for driving the pump body 21 and also controlling the working mode of the pump body 21.

[0059] With reference to Figure 5 For example, the control host 22 includes a foot switch 221 for controlling the working mode of the pump body 21. The operator can use the foot switch 221 to control the working mode of the pump body 21, which can avoid using hands to control the working mode of the pump body 21 during operation.

[0060] The control host 22 can include a motor 222 for driving the rotating disc 211 to rotate. The control host 22 can include a processor 223 for controlling the motor 222 in response to the signal of the foot switch 221, for example, controlling the motor 222 to rotate forward when the foot switch 221 is stepped on, and after the foot switch 221 is released, the processor 223 can control the motor 222 to rotate back for a certain time to properly release pressure.

[0061] When the pump body 21 reverses for too short a time, the pressure in the liquid supply pipeline 1 is not completely released, and the terminal of the water supply pipe of the surgical instrument 200 still has liquid droplets leaking out, for example, after the foot switch 221 is released and the motor 222 rotates back for 0.1 s, the terminal of the water supply pipe does not immediately stop outputting and still has liquid droplets flowing out, and at the same time, there is no liquid backflow.

[0062] In some embodiments, the liquid delivery device 2 is configured such that the length of time for the rotating disc 211 to reverse is 0.15s to 0.5s. Tests show that when the length of time is set to 0.15s, no liquid beads flow out of the terminal end of the water supply pipe, and the length of backflow in the surgical instrument 200 is 30cm to 40cm; when the length of time is set to 0.3s and 0.5s, no liquid beads flow out of the terminal end of the water supply pipe, and the length of backflow is 40cm to 55cm. The results show that after the motor 222 rotates for 0.1s, the pressure in the liquid supply pipeline 1 has not completely dissipated, and when the motor 222 rotates for 0.15s or more, the pressure is completely dissipated, and is in different backflow length intervals.

[0063] Exemplarily, the maximum backflow length is 60cm, and 0.15s to 0.5s meets the requirements, which can effectively dissipate the pressure and control the liquid backflow distance, and effectively prevent the backflow from contaminating the liquid container 4. When the motor 222 rotates for 0.15s, the shortest backflow length is exhibited. The check valve 3 can further prevent liquid backflow, but when the length of time is too long, the liquid in the liquid supply pipeline 1 will be sucked back, and when the pressure is too low, an uncontrollable situation will occur.

[0064] Alternatively, the check valve 3 can be an electrically controlled valve, including a rotary ball valve, a plug valve, etc., and the conductive state and closed state of the check valve 3 can be controlled to switch. The electrically controlled valve can be controlled by, for example, the processor 223. Even if the liquid in the liquid supply pipeline 1 stops flowing, there is still a risk of diffusion of the impurities therein, and the check valve 3 helps to prevent liquid backflow and also helps to isolate the solutes in the liquid of the surgical instrument 200.

[0065] Reference Figure 6 In some embodiments, the check valve 3 includes a valve housing 31, a valve core 32, and an elastic member 33. The valve housing 31 is provided with a valve cavity 301 and liquid inlet holes 302 and liquid outlet holes 303 respectively communicating with the valve cavity 301. The valve core 32 is arranged in the valve cavity 301, and the elastic member 33 is used to drive the valve core 32 to block the liquid inlet holes 302. When the liquid delivery device 2 delivers liquid, the pressure at the liquid inlet holes 302 is large, and the liquid can push open the valve core 32, and then flow to the liquid outlet holes 303 through the valve cavity 301. When the liquid delivery device 2 operates in reverse, the pressure at the liquid inlet holes 302 is released, and then the elastic member 33 can push the valve core 32 to block the liquid inlet holes 302. The check valve 3 is a one-way valve and can automatically adjust.

[0066] Exemplarily, the check valve 3 is arranged between the liquid outlet end of the liquid supply pipeline 1 and the peristaltic tube 14 corresponding to the liquid delivery device 2. Figure 3 and Figure 6As shown, the liquid supply pipeline 1 can include a first connecting pipe 11 connected between the check valve 3 and the liquid delivery device 2, a first connector 51 arranged at the check valve 3, and a second connector 52 arranged at the first connecting pipe 11 and detachably connected to the first connector 51. Optionally, the first connector 51 is a female Luer connector, and the second connector 52 is a male Luer connector, so that the liquid supply pipeline 1 can be manufactured in parts and then assembled easily.

[0067] In some embodiments, the liquid supply device 100 further includes a liquid container 4. The liquid container 4 can be arranged centrally with the control host 22. The liquid supply device 100 is arranged in an integrated manner and can be directly applied to the surgical instrument 200. The liquid supply pipeline 1 includes a second connecting pipe 12 connected between the liquid delivery device 2 and the liquid container 4. In combination with Figure 4 As shown, the peristaltic pipe 14 has a sixth connector 56 and a seventh connector 57 arranged at two ends thereof respectively. The first connecting pipe 11 and the peristaltic pipe 14 are fixed and connected through the sixth connector 56, and the second connecting pipe 12 and the peristaltic pipe 14 are fixed and connected through the seventh connector 57.

[0068] Exemplarily, the liquid supply pipeline 1 includes a third connecting pipe 13 having a fourth connector 54 and a fifth connector 55 arranged at two ends thereof respectively. The check valve 3 has a third connector 53 arranged at the liquid outlet hole 303 thereof. The third connector 53 can be a male Luer connector and can be connected to the fourth connector 54 to connect the check valve 3 to the third connecting pipe 13. The liquid inlet 210 of the surgical instrument 200 can be provided with an eighth connector 58, for example, a female Luer connector, which can be connected to the fifth connector 55 to connect the liquid inlet 210 to the third connecting pipe 13. By arranging the third connecting pipe 13, the liquid supply pipeline 1 can be designed to be longer, facilitating the flexible movement of the surgical instrument 200, and the surgical instrument 200 has a larger space for finger movement.

[0069] Exemplarily, the third connecting pipe 13 is shorter than the first connecting pipe 11. For the check valve 3, referring to Figure 1 , along the liquid supply pipeline 1, the check valve 3 is arranged close to the liquid outlet end and away from the liquid delivery device 2. The check valve 3 is closed after pressure relief of the liquid supply pipeline 1, which helps to prevent the liquid in the surgical instrument 200, especially the liquid from the human body, from flowing back to the liquid supply pipeline 1, ensuring the cleanliness of the liquid supply pipeline 1.

[0070] In combination with Figure 7 , Figure 8 and Figure 9As shown, in some embodiments, the third joint 53 can be connected to the eighth joint 58. The third joint 53 and the eighth joint 58 are both luer joints, one of which is a male joint and the other is a female joint. The joints on both sides of the check valve 3 are configured as luer joints, which can achieve detachable connection, easy assembly and disassembly, and good sealing when connected. The liquid supply pipeline 1 is connected to the surgical instrument 200 through the check valve 3. The liquid supply pipeline 1 can be configured to be relatively short, and the liquid delivery device 2 has a fast response speed for liquid delivery and pressure relief. During the operation, the liquid supply device 100 can supply water and stop water supply in time, thereby improving the operation efficiency.

[0071] Reference Figure 10 In some embodiments, the first connecting pipe 11 is fixed to the check valve 3. The first connecting pipe 11 can be connected to the liquid inlet hole 302 or directly connected to the valve cavity 301 as the liquid inlet hole 302. The first connecting pipe 11 is configured in a fixed connection manner, so that the liquid supply device 100 has a simple structure.

[0072] Exemplarily, the liquid supply device 100 can include a third connecting pipe 13 fixed to the check valve 3. The third connecting pipe 13 can be connected to the liquid outlet hole 303 or directly connected to the valve cavity 301 as the liquid outlet hole 303.

[0073] The technical features of each of the above disclosed embodiments can be combined in any manner. In order to make the description concise, not all possible combinations of the technical features in the above described embodiments are described, however, as long as the combinations of the technical features do not contradict, they should be considered within the scope of the present disclosure.

[0074] In the above disclosed embodiments, unless otherwise explicitly specified and limited, the execution order of each step is not limited, for example, the steps can be executed in parallel, or in different orders. The sub-steps of each step can also be executed in an interleaved manner. The above described various forms of flow can be used, and the steps can be reordered, added or deleted, as long as the desired results of the technical solutions provided in the present application can be achieved, and the present application does not limit this.

[0075] The above disclosed embodiments only express several embodiments of the present application, which are described in detail and specifically, but should not be understood as limiting the patent protection scope of the present application. It should be noted that for those skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are all within the scope of the patent protection claimed by the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A liquid supply device, characterized in that, include: A liquid supply line, wherein the inlet end of the liquid supply line is used to connect to a liquid container, and the outlet end of the liquid supply line is used to connect to the inlet of a surgical instrument; a portion of the liquid supply line is used in conjunction with a liquid delivery device to allow the liquid in the liquid supply line to flow from the inlet end to the outlet end and to be depressurized. as well as A check valve is provided between the portion of the fluid supply line and the surgical instrument to prevent backflow of the fluid.

2. The liquid supply device according to claim 1, characterized in that, It also includes the liquid delivery device, wherein a portion of the liquid supply line is a peristaltic tube, and the liquid delivery device is capable of driving the peristaltic tube to drive the liquid within the peristaltic tube.

3. The liquid supply device according to claim 2, characterized in that, The liquid conveyor includes a turntable and a plurality of rotors disposed on the outer periphery of the turntable; When the turntable rotates forward, the rotor located in the effective rotation angle zone of the turntable can crush the peristaltic tube to push the liquid in the peristaltic tube from the inlet end to the outlet end; when the turntable rotates in reverse, the rotor located in the effective rotation angle zone of the turntable can push the liquid in the peristaltic tube from the outlet end to the inlet end.

4. The liquid supply device according to claim 3, characterized in that, The liquid conveyor is configured such that the turntable reverses for a period of 0.15s to 0.5s.

5. The liquid supply device according to claim 1, characterized in that, The liquid delivery device includes a pump body and a control unit. The pump body is used to control the liquid in the liquid supply pipeline, and the control unit drives the pump body. The control unit includes a foot switch to control the operating mode of the pump body.

6. The liquid supply device according to claim 1, characterized in that, The check valve includes a valve body, a valve core, and an elastic element. The valve body has a valve cavity and an inlet and an outlet respectively connected to the valve cavity. The valve core is disposed in the valve cavity, and the elastic element is used to drive the valve core to block the inlet.

7. The liquid supply device according to claim 1, characterized in that, The check valve is detachably connected to the Luer connector of the surgical instrument, allowing the fluid supply line to be connected to the surgical instrument via the check valve; or The check valve is located between the liquid outlet and the liquid conveyor, and the check valve is located near the liquid outlet relative to the liquid conveyor along the liquid supply line.

8. The liquid supply device according to claim 1, characterized in that, The liquid supply pipeline includes a first connecting pipe connecting the check valve and the liquid delivery device, a first connector disposed at the check valve, and a second connector disposed at the first connecting pipe and detachably connected to the first connector.

9. The liquid supply device according to any one of claims 1 to 8, characterized in that, It also includes the liquid container; The liquid supply line includes a second connecting pipe that connects the liquid conveyor and the liquid container.

10. An endoscope system, characterized in that, include: Endoscope; Surgical instruments are inserted into the forceps channel of the endoscope; as well as The liquid supply device as described in any one of claims 1 to 9.

Images