A foot-operated quantitative flushing operation device for a double-cavity oocyte retrieval needle

Abstract

The present application relates to the technical field of medical apparatus and instruments, in particular to a double-cavity oocyte extraction needle foot pedal quantitative flushing operation device, which comprises a quantitative liquid supply box, the quantitative liquid supply box is connected with a treading mechanism for foot treading control; the quantitative liquid supply box is provided with a placing cavity, the bottom end of the placing cavity is provided with a transfer assembly, the transfer assembly extends out of the quantitative liquid supply box and communicates with a flushing cavity, and the transfer assembly is connected with the treading mechanism in control; the transfer assembly comprises a liquid taking needle arranged at the bottom end of the placing cavity, the outlet of the liquid taking needle communicates with a transfer cavity arranged in the quantitative liquid supply box, the liquid taking needle is inserted into a liquid storage cylinder placed in the placing cavity, and the inlet of the liquid taking needle communicates with the inner cavity of the liquid storage cylinder. The device is compact in structure, closely connected between components and reasonable in design, reduces the operation pressure in the use process, improves the safety of the device, enables medical staff to easily start and quickly master the operation method, and is also convenient for daily maintenance and cleaning work.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, and particularly relates to a foot-operated quantitative flushing operation device for a double-cavity oocyte retrieval needle. BACKGROUND

[0002] In the existing assisted reproductive technology, the double-cavity oocyte retrieval needle is widely used in oocyte retrieval surgery. The existing double-cavity oocyte retrieval needle generally comprises two cavities, wherein the main cavity is connected with a negative pressure suction device, and is used for sucking follicular fluid and oocytes into a collection container, and the auxiliary cavity can be connected with flushing liquid, and is used for flushing the follicle during oocyte retrieval, helping to expose the oocytes and improving the recovery rate.

[0003] The traditional flushing method usually needs to use a manual syringe to inject the flushing liquid, which leads to complicated operation and time-consuming. During the surgery, the medical personnel need to interrupt the main operation to manually replace the syringe, which not only affects the efficiency of the surgery, but also causes the nurses on the table to be in a hurry sometimes, affects the safety of the oocyte retrieval process, and increases the risk of the surgery. In addition, the manual operation can also cause the inaccuracy of the amount of flushing liquid, thereby affecting the effect of the surgery. In addition, the flushing liquid storage and delivery device in the traditional flushing method is often not reasonably designed, so that the flushing liquid is easily contacted with the external environment during the delivery process, causing the fluctuation of the temperature of the flushing liquid. The non-constant temperature can adversely affect the effect of the surgery.

[0004] Therefore, the present application designs a foot-operated quantitative flushing operation device for a double-cavity oocyte retrieval needle to solve the above technical problems. SUMMARY

[0005] The purpose of the present application is to provide a foot-operated quantitative flushing operation device for a double-cavity oocyte retrieval needle to solve the problems existing in the prior art.

[0006] To achieve the above-mentioned purpose, the present application provides the following scheme: the present application provides a foot-operated quantitative flushing operation device for a double-cavity oocyte retrieval needle, comprising a quantitative liquid supply box, the quantitative liquid supply box is in communication with the flushing cavity of the double-cavity oocyte retrieval needle, and the quantitative liquid supply box is control-connected with a treading mechanism for foot control;

[0007] A placing cavity is arranged on the quantitative liquid supply box, a transfer assembly is arranged at the bottom end of the placing cavity, the transfer assembly extends out of the quantitative liquid supply box and is in communication with the flushing cavity, and the transfer assembly is control-connected with the treading mechanism.

[0008] The transfer assembly comprises a liquid taking needle arranged at the bottom end of the placing cavity, the outlet of the liquid taking needle is in communication with a transfer cavity arranged in the quantitative liquid supply box, the liquid taking needle is inserted into a liquid storage cylinder placed in the placing cavity, and the inlet of the liquid taking needle is in communication with the inner cavity of the liquid storage cylinder.

[0009] Preferably, the transfer cavity comprises a transfer channel formed in the liquid supply box, and a driving module is arranged on the transfer channel to drive the forward movement of the flushing liquid; the flushing liquid driven by the driving module pushes the outlet one-way valve arranged at the outlet end of the transfer channel and communicates with the flushing cavity.

[0010] Preferably, the driving module comprises a driving pipe communicated with the transfer channel, and driving pieces are respectively attached to the upper and lower sides of the driving pipe; the driving pieces away from the driving pipe abut against the elliptical driving cam in transmission; and the two driving cams rotate towards each other.

[0011] Preferably, the liquid taking needle comprises a needle body fixedly connected to the bottom end of the placement cavity, and a liquid taking channel is designed in the needle body and communicates with the transfer channel and the inner cavity of the liquid storage cylinder; and the liquid taking channel is provided with a liquid taking one-way valve which is unidirectionally opened to the transfer channel.

[0012] Preferably, the liquid taking one-way valve comprises a liquid taking fixed plate and a liquid taking movable plate fixedly connected to the liquid taking channel; a liquid taking guide rod is sealingly and slidably arranged on the liquid taking fixed plate, and the liquid taking guide rod is fixedly connected to the liquid taking movable plate; and a plurality of liquid taking sliding rods are fixedly connected to the liquid taking fixed plate and sealingly and slidably connected to the liquid taking movable plate.

[0013] Preferably, a plurality of liquid taking outlets corresponding to the liquid taking sliding rods are formed in the liquid taking fixed plate; a liquid taking hole communicating with the liquid taking outlet is formed in the liquid taking sliding rod; and a plurality of liquid taking inlets communicating with the liquid taking hole are formed in the liquid taking sliding rod, and the liquid taking inlets are shielded by the liquid taking movable plate when not subjected to external force.

[0014] Preferably, a flexible sealing plug is arranged at the bottom end of the liquid storage cylinder and corresponds to the needle body; after the liquid storage cylinder is placed in the placement cavity, the needle body pierces the sealing plug, and the inlet of the liquid taking channel communicates with the inner cavity of the liquid storage cylinder.

[0015] Preferably, a liquid supplementing pipe is arranged on the side wall of the liquid storage cylinder and extends out of the liquid supply box through a clearance groove formed in the liquid supply box; the flushing liquid in the liquid supplementing cylinder pushes the liquid supplementing one-way valve arranged in the liquid supplementing pipe to supplement the liquid in the liquid storage cylinder.

[0016] Preferably, the liquid supplementing one-way valve comprises a liquid supplementing sliding block slidingly connected in the liquid supplementing pipe and elastically connected with a liquid supplementing filter block arranged in the liquid supplementing pipe; and a liquid supplementing channel is formed in the liquid supplementing sliding block and communicates with the inner cavity of the liquid storage cylinder through a plurality of liquid supplementing inlets.

[0017] Preferably, the quantitative liquid supply box is provided with a driving motor connected with the control of the pedal mechanism, an output shaft of the driving motor is drivingly connected with a driving gear, the driving gear is drivingly connected with a driven gear, and the driving gear and the driven gear are drivingly connected with the driving cam respectively.

[0018] Compared with the prior art, the application has the following advantages and technical effects: the application discloses a foot-pedal quantitative flushing operation device for a double-cavity oocyte retrieval needle, integrates the storage, extraction and delivery processes of the flushing liquid together, and can complete the whole flushing process through simple foot-pedal operation, thereby greatly simplifying the operation process and solving the problems in the prior art, i.e., manual replacement of the syringe, complicated operation and possible influence on oocyte retrieval safety during the flushing process of the double-cavity oocyte retrieval needle. The quantitative liquid supply box is a core component of the device, is in communication with the flushing cavity of the double-cavity oocyte retrieval needle, is responsible for controlling and providing the flushing liquid, is internally provided with a transfer cavity for transferring and driving the extracted flushing liquid from the liquid storage cylinder, and is connected with the pedal mechanism for control, so that the delivery of the flushing liquid is driven through foot-pedal operation. The nurse can trigger the flushing without interrupting the main operation during the operation, thereby significantly reducing the operation steps, improving the efficiency, enabling the medical staff to conveniently control the supply of the flushing liquid without leaving the operating table, realizing the quantitative delivery of the flushing liquid, and enabling the medical staff to manually replace the syringe or adjust the amount of the flushing liquid during the operation, thereby reducing the operation steps and time, improving the operation efficiency, freeing the hands of the nurse, reducing the risk of confusion caused by frequent tube replacement or manual operation, reducing the interference on the oocyte retrieval process, and improving the operation safety. The transfer assembly is arranged at the bottom end of the placement cavity of the quantitative liquid supply box, extends out of the quantitative liquid supply box and is in communication with the flushing cavity, the inlet of the liquid taking needle of the transfer assembly is in communication with the inner cavity of the liquid storage cylinder placed in the placement cavity, and the outlet is in communication with the transfer cavity. When the pedal mechanism is operated, the liquid taking needle can extract the flushing liquid from the liquid storage cylinder and deliver it into the transfer cavity, and then into the flushing cavity of the double-cavity oocyte retrieval needle. The liquid storage cylinder is stored in the placement cavity, and the temperature of the flushing liquid can be kept constant during the whole delivery process due to the reduced contact with the external environment, which is beneficial to improving the operation effect.

[0019] The device of the application has compact structure, close connection between components and reasonable design, reduces the operation pressure during use, improves the safety of the device, enables the medical staff to easily start using and quickly master the operation method, and is also convenient for daily maintenance and cleaning work. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained from these drawings without creative effort. In the drawings:

[0021] Figure 1 It is a schematic diagram of the principle of the foot-operated quantitative flushing operation device for the double-cavity oocyte retrieval needle of the present application;

[0022] Figure 2 It is a shaft view of the foot-operating mechanism of the present application;

[0023] Figure 3 It is a shaft view of the quantitative liquid supply box of the present application;

[0024] Figure 4 It is a schematic diagram of the structure of the quantitative liquid supply box of the present application;

[0025] Figure 5 It is a partial enlarged view of A in the present application; Figure 4

[0026] Figure 6 It is a partial enlarged view of B in the present application; Figure 4

[0027] Figure 7 It is a partial enlarged view of C in the present application; Figure 4

[0028] Figure 8 It is a schematic diagram of the driving module of the present application;

[0029] ​​​In the figure: 1, quantitative liquid supply box; 2, liquid storage cylinder; 3, pedal mechanism; 4, liquid supplement cylinder; 5, flushing cavity; 102, placement cavity; 103, transfer cavity; 104, transfer channel; 105, driving module; 106, outlet check valve; 107, driving pipe; 108, driving piece; 109, driving cam; 110, driving spring; 111, needle body; 112, liquid taking channel; 113, liquid taking check valve; 114, liquid taking fixed plate; 115, liquid taking movable plate; 116, liquid taking guide rod; 117, liquid taking slide rod; 118, liquid taking outlet; 119, liquid taking hole; 120, liquid taking inlet; 121, liquid taking spring; 122, position giving groove; 123, driving motor; 124, driving gear; 125, driven gear; 126, box cover; 127, constant temperature layer; 128, liquid taking needle; 201, blocking plug; 202, liquid supplement pipe; 203, liquid supplement check valve; 204, liquid supplement slide block; 205, liquid supplement filter block; 206, liquid supplement spring; 207, liquid supplement channel; 208, liquid supplement port; 209, positioning block; 301, pedal plate; 302, adjusting knob; 303, bottom plate; 304, control line; 305, adjusting bolt. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0031] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0032] Reference Figures 1 to 8 As shown in the figure, the embodiment provides a pedal quantitative flushing operation device for a double-cavity oocyte retrieval needle, which comprises a quantitative liquid supply box 1, the quantitative liquid supply box 1 is communicated with a flushing cavity 5 of the double-cavity oocyte retrieval needle, and the quantitative liquid supply box 1 is control-connected with a pedal mechanism 3 for foot control;

[0033] The quantitative liquid supply box 1 is provided with a placement cavity 102, the bottom end of the placement cavity 102 is provided with a transfer assembly, the transfer assembly extends out of the quantitative liquid supply box 1 and is communicated with the flushing cavity 5, and the transfer assembly is control-connected with the pedal mechanism 3.

[0034] The transfer assembly comprises a liquid taking needle 128 arranged at the bottom end of the placement cavity 102, the outlet of the liquid taking needle 128 is communicated with a transfer cavity 103 arranged in the quantitative liquid supply box 1, the liquid taking needle 128 is inserted into a liquid storage cylinder 2 placed in the placement cavity 102, and the inlet of the liquid taking needle 128 is communicated with the inner cavity of the liquid storage cylinder 2.

[0035] The application discloses a pedal quantitative flushing operation device for a double-cavity oocyte retrieval needle, which integrates the storage, extraction and delivery processes of flushing liquid, and can complete the whole flushing process through simple foot stepping operation, greatly simplifies the operation process, and aims to solve the problems of manual replacement of a syringe, complicated operation and possible influence on oocyte retrieval safety in the flushing process of the double-cavity oocyte retrieval needle in the prior art. The quantitative liquid supply box 1 serves as a core component of the device, is in communication with the flushing cavity 5 of the double-cavity oocyte retrieval needle, is responsible for controlling and providing the flushing liquid, and is internally provided with a transfer cavity 103 for transferring and driving the extracted flushing liquid from the liquid storage cylinder 2. The stepping mechanism 3 is in control connection with the quantitative liquid supply box 1, and drives the delivery of the flushing liquid through foot stepping operation. The nurse can trigger the flushing without interrupting the main operation in the surgery, significantly reduces the operation steps, improves the efficiency, enables the medical staff to conveniently control the supply of the flushing liquid without leaving the operating table, realizes the quantitative delivery of the flushing liquid, and the medical staff does not need to manually replace the syringe or adjust the flushing liquid amount in the surgical process, thereby reducing the operation steps and time, improving the surgical efficiency, freeing the hands of the nurse, reducing the risk of confusion caused by frequent tube replacement or manual operation, reducing the interference on the oocyte retrieval process, and improving the surgical safety. The transfer assembly is arranged at the bottom end of the placement cavity 102 of the quantitative liquid supply box 1, extends out of the quantitative liquid supply box 1 and is in communication with the flushing cavity 5, the inlet of the liquid taking needle 128 of the transfer assembly is in communication with the inner cavity of the liquid storage cylinder 2 placed in the placement cavity 102, and the outlet is in communication with the transfer cavity 103. When the stepping mechanism 3 is operated, the liquid taking needle 128 can extract the flushing liquid from the liquid storage cylinder 2 and send it into the transfer cavity 103, and then supply it into the flushing cavity 5 of the double-cavity oocyte retrieval needle. The liquid storage cylinder 2 is stored in the placement cavity 102, and the contact with the external environment is reduced in the whole delivery process, so that the constant temperature of the flushing liquid can be better maintained, and the improvement of the surgical effect is facilitated. The device structure is compact, the components are closely connected and reasonably designed, the operation pressure in the use process is reduced, the device safety is improved, the medical staff can easily start and quickly master the operation method, and meanwhile, the daily maintenance and cleaning work is facilitated.

[0036] In an embodiment of the application, the stepping mechanism 3 comprises a bottom plate 303, a plurality of stepping plates 301 are arranged on the bottom plate 303, and the stepping plates 301 are connected with the driving assembly through control lines 304. When flushing is needed, the medical staff controls the driving assembly to start by stepping the stepping plates 301, so that quantitative flushing is realized.

[0037] In an embodiment of the application, an adjusting knob 302 is arranged on the bottom plate 303, and the driving mode of the driving module 105 and the supply amount of the flushing liquid can be adjusted.

[0038] In one embodiment of the present application, the pedal 301 can be adjusted in length by adjusting the bolt 305, so as to be suitable for different medical staff, and improve the comfort.

[0039] In one embodiment of the present application, the top end of the dosing box 1 is hingedly provided with a box cover 126.

[0040] In one embodiment of the present application, the dosing box 1 is provided with a constant temperature layer 127, which is arranged around the holding cavity 102, and maintains the temperature of the liquid storage cartridge 2 constant.

[0041] In one embodiment of the present application, the constant temperature layer 127 can maintain the temperature of the flushing liquid at 37℃.

[0042] Further optimization, the transfer cavity 103 comprises a transfer channel 104 formed in the dosing box 1, the transfer channel 104 is provided with a driving module 105 for driving the flushing liquid to advance, the flushing liquid driven by the driving module 105 pushes away the outlet one-way valve 106 arranged at the outlet end of the transfer channel 104 and communicates with the flushing cavity 5. The driving module 105 is used to drive the flushing liquid to advance, and push away the outlet one-way valve 106 arranged at the outlet end of the transfer channel 104, so that the flushing liquid communicates with the flushing cavity 5, which can more accurately control the delivery amount and delivery timing of the flushing liquid, and further improve the safety and efficiency of the operation.

[0043] Further optimization, the driving module 105 comprises a driving pipe 107 communicated with the transfer channel 104, driving pieces 108 are respectively pasted on the upper and lower sides of the driving pipe 107, and the sides of the driving pieces 108 away from the driving pipe 107 abut against the driving cams 109 in the form of ellipse, and the two driving cams 109 rotate towards each other. The driving pipe 107 is communicated with the transfer channel 104, the two sides of the driving pieces 108 abut against the driving cams 109 in the form of ellipse, and the two driving cams 109 rotate towards each other, so as to drive the flushing liquid to advance, and realize the quantitative delivery of the flushing liquid, and the structure is relatively simple, and easy to realize and maintain.

[0044] In one embodiment of the present application, the outer edge of the driving cam 109 is provided with a groove matched with the driving piece 108, which improves the uniformity of the force received by the driving pipe 107.

[0045] In one embodiment of the present application, a driving spring 110 in compression is arranged between the two driving pieces 108. When the long axis of the two driving cams 109 contacts the driving pieces 108, the driving pieces 108 compress the driving tube 107, and the flushing liquid in the driving tube 107 is squeezed to flow into the flushing cavity 5. When the long axis of the driving cam 109 rotates, the distance between the outer edges of the two driving cams 109 increases, and the pressure on the driving pieces 108 is lost. The driving spring 110 rebounds to relax the driving tube 107, and the flushing liquid in the liquid storage cylinder 2 is replenished into the driving tube 107, facilitating the next driving.

[0046] In one embodiment of the present application, the outlet of the transfer cavity 103 is connected with a flushing tube, which is used by the nurse to assist the patient in flushing.

[0047] In one embodiment of the present application, an anti-bubble device is arranged on the flushing tube to ensure that no air enters the flushing tube.

[0048] In one embodiment of the present application, the anti-bubble device on the pipeline is mainly used to eliminate or prevent the bubbles generated in the fluid conveying process of the pipeline, to ensure the stability, metering accuracy and system safety of the fluid conveying. The core principle is to block the conditions for generating bubbles or forcibly discharge the generated bubbles through physical blocking, active venting or fluid dynamics design.

[0049] Gravity sedimentation and venting structure

[0050] Principle: By taking advantage of the characteristic that the density of a bubble is much smaller than that of a fluid, the local cross-sectional area of the pipeline is expanded (such as by arranging an "expansion cavity") to reduce the flow rate, so that the bubbles rise to the top of the cavity under the action of gravity and are discharged through an automatic venting valve (such as a float type or diaphragm type).

[0051] Features: Simple structure, suitable for low flow rate and fluid containing no large amount of impurities (such as clean water and liquid medicine).

[0052] Centrifugal separation technology

[0053] Principle: A rotating impeller or spiral structure is arranged in the pipeline. When the fluid passes through, a centrifugal force is generated. The bubbles are thrown to the central area due to their small density, and are discharged through a special venting channel, while the fluid continues to be conveyed along the outer periphery.

[0054] Features: Suitable for high flow rate systems, and can efficiently separate small bubbles (such as emulsified bubbles in hydraulic systems).

[0055] Membrane separation and adsorption technology

[0056] Principle: A hydrophobic membrane (such as a polytetrafluoroethylene membrane) that is permeable to gas but impermeable to liquid is used. The bubbles in the pipeline can penetrate through the membrane to the outside atmosphere, while the liquid is blocked on the inside of the membrane due to surface tension. Some devices also combine activated carbon or air-philic materials to adsorb bubbles.

[0057] Features: Suitable for high-cleanliness applications (e.g. semiconductor wafer cleaning fluid delivery), but requires regular replacement of membrane components to prevent clogging.

[0058] Fluid disturbance suppression design

[0059] Principle: Reduce the likelihood of bubble generation from the source by optimizing pipe shape (e.g. avoid right-angle bends, use gradually changing pipe diameters), reducing valve throttling or pump cavitation. For example, set up a steady flow chamber at the suction end of the pump to avoid liquid boiling due to negative pressure.

[0060] Features: Belongs to preventive design, often used in combination with other degassing devices, suitable for high-pressure and high-flow rate systems.

[0061] Ultrasonic or vacuum degassing

[0062] Principle:

[0063] Ultrasonic: Break bubbles by high-frequency vibration and gather them into large bubbles for easy discharge;

[0064] Vacuum degassing: Place the pipeline in a vacuum environment locally, reduce the boiling point of the liquid, make the gas dissolved in the fluid escape, and then be pumped out by the vacuum pump.

[0065] Features: Suitable for fluids containing more dissolved gas (e.g. high-temperature water, organic solvents), high degassing efficiency but high energy consumption.

[0066] Key technical requirements

[0067] Sealing: The connection between the device and the pipeline needs to be strictly sealed to prevent external air from entering (e.g. use O-rings, welded joints).

[0068] Low flow resistance design: Avoid excessive pressure loss caused by device structure, which affects the stability of system flow.

[0069] Adaptability: Choose materials (e.g. stainless steel, fluoroplastic) and structures according to the properties of the fluid (viscosity, corrosiveness, solid content) to ensure long-term reliable operation.

[0070] Further optimization scheme, the liquid taking needle 128 includes the needle body 111 fixed at the bottom end of the placement cavity 102, the liquid taking channel 112 is designed in the needle body 111, the liquid taking channel 112 is communicated with the transfer channel 104 and the inner cavity of the liquid storage cylinder 2; the liquid taking channel 112 is provided with the liquid taking one-way valve 113 which is unidirectionally opened to the transfer channel 104.The liquid taking channel 112 is communicated with the transfer channel 104 and the inner cavity of the liquid storage cylinder 2, the liquid taking one-way valve 113 is arranged on the liquid taking channel 112, and is used to control the flow direction of the flushing liquid from the liquid storage cylinder 2 to the transfer channel 104; by increasing the liquid taking one-way valve 113, the backflow of the flushing liquid to the liquid storage cylinder 2 can be prevented, and the conveying direction and stability of the flushing liquid are ensured.

[0071] Further optimization scheme, the liquid taking one-way valve 113 includes the liquid taking fixed plate 114 and the liquid taking movable plate 115 fixed in the liquid taking channel 112, the liquid taking guide rod 116 is sealingly and slidably arranged on the liquid taking fixed plate 114, and the liquid taking guide rod 116 is fixedly connected with the liquid taking movable plate 115; a plurality of liquid taking sliding rods 117 are fixedly connected with the liquid taking movable plate 115 on the liquid taking fixed plate 114, and the liquid taking sliding rods 117 sealingly slide with the liquid taking movable plate 115.The liquid taking guide rod 116 and the liquid taking sliding rod 117 are used to realize the sealing sliding of the liquid taking movable plate 115 on the liquid taking fixed plate 114, so that the opening and closing of the liquid taking one-way valve 113 are controlled, the opening and closing of the liquid taking one-way valve 113 are controlled through the sliding of the liquid taking movable plate 115, the accurate control of the flushing liquid is realized, and the structure is relatively simple, easy to realize and maintain.

[0072] Further optimization scheme, a plurality of liquid taking outlets 118 corresponding to the liquid taking sliding rods 117 are formed in the liquid taking fixed plate 114, liquid taking holes 119 communicated with the liquid taking outlets 118 are formed in the liquid taking sliding rods 117, and a plurality of liquid taking inlets 120 communicated with the liquid taking holes 119 are formed in the liquid taking sliding rods 117; when not subjected to external force, the liquid taking inlets 120 are shielded by the liquid taking movable plate 115.When not subjected to external force, the liquid taking inlets 120 are shielded by the liquid taking movable plate 115, so that the backflow of the flushing liquid is prevented; when the flushing liquid in the driving pipe 107 is reduced, the liquid taking guide rod 116 is unbalanced, the liquid taking movable plate 115 slides to the liquid taking fixed plate 114, the liquid taking inlets 120 are exposed from the liquid taking movable plate 115, the liquid taking one-way valve 113 is opened, the flushing liquid in the liquid storage cylinder 2 is supplemented to the driving pipe 107, the unidirectional flow of the flushing liquid is realized, and the conveying stability and safety of the flushing liquid are further improved.

[0073] In an embodiment of the present application, the liquid taking spring 121 is arranged between the liquid taking fixed plate 114 and the liquid taking movable plate 115, and the liquid taking spring 121 is sleeved on the liquid taking guide rod 116, so as to realize the reset of the liquid taking movable plate 115.

[0074] Further optimization scheme, the bottom end of the liquid storage cylinder 2 is provided with a flexible sealing plug 201, the sealing plug 201 is correspondingly arranged with the needle body 111, after the liquid storage cylinder 2 is placed into the placing cavity 102, the needle body 111 pierces the sealing plug 201, and the inlet of the liquid taking channel 112 is communicated with the inner cavity of the liquid storage cylinder 2. In order to increase safety and reduce health protection pressure, each liquid storage cylinder 2 is used by a single person, by increasing the sealing plug 201, the device can prevent the flushing liquid in the liquid storage cylinder 2 from leaking out when not in use, and ensure the cleanliness and use effect of the flushing liquid; after the liquid storage cylinder 2 is placed into the placing cavity 102, the needle body 111 pierces the sealing plug 201, so that the inlet of the liquid taking channel 112 is communicated with the inner cavity of the liquid storage cylinder 2, facilitating liquid taking.

[0075] Further optimization scheme, the sidewall of the liquid storage cylinder 2 is provided with a liquid supplementing pipe 202, the liquid supplementing pipe 202 extends out of the quantitative liquid supply box 1 through the accommodating groove 122 arranged on the quantitative liquid supply box 1, and the flushing liquid in the liquid supplementing cylinder 4 pushes away the liquid supplementing one-way valve 203 arranged in the liquid supplementing pipe 202 to supplement the liquid into the liquid storage cylinder 2. The flushing liquid in the liquid supplementing cylinder 4 can push away the liquid supplementing one-way valve 203 to supplement the liquid into the liquid storage cylinder 2, so that the flushing liquid in the liquid storage cylinder 2 can be supplemented at any time during the operation, the situation that the operation is interrupted due to insufficient flushing liquid is avoided, and the continuity and safety of the operation are improved.

[0076] In an embodiment of the present application, the inlet of the liquid supplementing pipe 202 is communicated with an empty liquid storage bag, which is convenient for liquid supplementing by a nurse under the operating table.

[0077] Further optimization scheme, the liquid supplementing one-way valve 203 comprises a liquid supplementing sliding block 204 slidingly connected in the liquid supplementing pipe 202, the liquid supplementing sliding block 204 is elastically connected with a liquid supplementing filtering block 205 arranged in the liquid supplementing pipe 202; a liquid supplementing channel 207 is arranged in the liquid supplementing sliding block 204, and the liquid supplementing channel 207 is communicated with the inner cavity of the liquid storage cylinder 2 through a plurality of liquid supplementing openings 208. The liquid supplementing sliding block 204 and the liquid supplementing filtering block 205 are elastically connected through a plurality of liquid supplementing springs 206, and the liquid supplementing channel 207 is communicated with the inner cavity of the liquid storage cylinder 2 through the liquid supplementing openings 208. When the pressure of the flushing liquid in the liquid storage cylinder 2 is reduced, the flushing liquid in the liquid supplementing cylinder 4 pushes the liquid supplementing sliding block 204 to slide towards the liquid storage cylinder 2, the liquid supplementing openings 208 are exposed out of the liquid supplementing pipe 202, so that the two sides of the liquid supplementing one-way valve 203 are communicated, the pressure in the liquid supplementing cylinder 4 is constant, and the stability of the flushing liquid flowing in the flushing cavity 5 is indirectly increased; the device can prevent the flushing liquid from flowing back into the liquid supplementing cylinder 4, and ensure the cleanliness and purity of the supplemented flushing liquid, and the cooperation of the liquid supplementing channel 207 and the liquid supplementing openings 208 makes the liquid supplementing process more smooth and stable.

[0078] In an embodiment of the present application, one end of the liquid supplementing sliding block 204 towards the liquid storage cylinder 2 is fixedly connected with a positioning block 209, the diameter of the positioning block 209 is greater than that of the liquid supplementing pipe 202, so that the liquid supplementing sliding block 204 is positioned and the movement of the liquid supplementing sliding block 204 is avoided.

[0079] Further optimization scheme, quantitative liquid supply box 1 is provided with drive motor 123 connected with the control of the pedal mechanism 3, the output shaft of the drive motor 123 is drivingly connected with driving gear 124, the driving gear 124 is drivingly connected with driven gear 125, the driving gear 124 and the driven gear 125 are respectively drivingly connected with the drive cam 109. The driving gear 124 and the driven gear 125 are respectively drivingly connected with the drive cam 109, so that the rotation of the drive cam 109 is controlled through the pedal mechanism 3, so that the delivery amount and delivery speed of the flushing liquid are controlled. This electric control mode makes the operation more convenient and accurate, improves the safety and efficiency of the operation, and also reduces the labor intensity of the medical personnel.

[0080] In an embodiment of the present application, the adjusting knob 302 can adjust the rotating speed or other working mode of the drive motor 123, and the supply mode and supply flow of the flushing liquid can be flexibly adjusted.

[0081] In the description of the present application, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" 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 convenience of describing the present application, and do not indicate or imply 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 a limitation on the present application.

[0082] The above-described embodiments are only to describe the preferred modes of the present application, and not to limit the scope of the present application, and various modifications and improvements to the technical solutions of the present application made by those skilled in the art without departing from the design spirit of the present application shall fall within the protection scope determined by the claims of the present application.

Claims

1. A foot-operated quantitative flushing device for a double-chamber oocyte retrieval needle, characterized in that: It includes a quantitative liquid supply box (1), which is connected to the flushing chamber (5) of the double-lumen oocyte retrieval needle, and the quantitative liquid supply box (1) is controlled by a foot pedal mechanism (3). The quantitative liquid supply box (1) is provided with a placement cavity (102), and a transfer component is provided at the bottom of the placement cavity (102). The transfer component extends out of the quantitative liquid supply box (1) and communicates with the flushing cavity (5). The transfer component is controlled to be connected to the stepping mechanism (3). The transfer assembly includes a liquid-taking needle (128) disposed at the bottom of the placement cavity (102). The outlet of the liquid-taking needle (128) is connected to the transfer cavity (103) disposed in the quantitative liquid supply box (1). The liquid-taking needle (128) is inserted into the liquid storage cylinder (2) placed in the placement cavity (102). The inlet of the liquid-taking needle (128) is connected to the inner cavity of the liquid storage cylinder (2). The transfer chamber (103) includes a transfer channel (104) opened in the quantitative liquid supply box (1). A drive module (105) for driving the flushing liquid forward is provided on the transfer channel (104). The flushing liquid driven by the drive module (105) pushes open the outlet check valve (106) provided at the outlet end of the transfer channel (104) and communicates with the flushing chamber (5). The drive module (105) includes a drive tube (107) connected to the transfer channel (104). Drive plates (108) are attached to the upper and lower sides of the drive tube (107). An elliptical drive cam (109) is abutted on the side of the drive plate (108) away from the drive tube (107). The two drive cams (109) rotate towards each other. The quantitative liquid supply box (1) is equipped with a drive motor (123) that is controlled and connected to the pedal mechanism (3). The output shaft of the drive motor (123) is connected to a drive gear (124). The drive gear (124) meshes with a driven gear (125). The drive gear (124) and the driven gear (125) are respectively connected to the drive cam (109). The liquid-taking needle (128) includes a needle body (111) fixed to the bottom end of the placement cavity (102). The needle body (111) is designed with a liquid-taking channel (112), which connects the transfer channel (104) and the inner cavity of the liquid storage cylinder (2). The liquid-taking channel (112) is provided with a liquid-taking one-way valve (113) that opens to the transfer channel (104) in one direction. The liquid-collecting one-way valve (113) includes a liquid-collecting fixed plate (114) and a liquid-collecting movable plate (115) fixedly connected in the liquid-collecting channel (112). A liquid-collecting guide rod (116) is sealed and slidably mounted on the liquid-collecting fixed plate (114), and the liquid-collecting guide rod (116) is fixedly connected to the liquid-collecting movable plate (115). A plurality of liquid-collecting slide rods (117) are fixedly mounted on the liquid-collecting fixed plate (114), and the liquid-collecting slide rods (117) are sealed and slidably mounted with the liquid-collecting movable plate (115). The liquid collection fixing plate (114) is provided with a plurality of liquid collection outlets (118) corresponding to the liquid collection slide rod (117). The liquid collection slide rod (117) is provided with a liquid collection hole (119) communicating with the liquid collection outlet (118). The liquid collection slide rod (117) is provided with a plurality of liquid collection inlets (120) communicating with the liquid collection hole (119). When no external force is applied, the liquid collection inlet (120) is blocked by the liquid collection movable plate (115).

2. The foot-operated quantitative flushing device for the double-chamber oocyte retrieval needle according to claim 1, characterized in that: The bottom end of the liquid storage cylinder (2) is provided with a flexible sealing plug (201). The sealing plug (201) is correspondingly provided with the needle body (111). After the liquid storage cylinder (2) is placed into the placement cavity (102), the needle body (111) pierces the sealing plug (201). The inlet of the liquid extraction channel (112) is connected to the inner cavity of the liquid storage cylinder (2).

3. The foot-operated quantitative flushing device for the double-chamber oocyte retrieval needle according to claim 1, characterized in that: The side wall of the liquid storage cylinder (2) is provided with a replenishment pipe (202). The replenishment pipe (202) extends out of the quantitative liquid supply box (1) through the relief groove (122) opened on the quantitative liquid supply box (1). The flushing liquid in the replenishment cylinder (4) pushes open the replenishment check valve (203) set in the replenishment pipe (202) to replenish the liquid into the liquid storage cylinder (2).

4. The foot-operated quantitative flushing device for the double-chamber oocyte retrieval needle according to claim 3, characterized in that: The replenishment check valve (203) includes a replenishment slider (204) slidably connected in the replenishment tube (202), the replenishment slider (204) being elastically connected to a replenishment filter block (205) disposed in the replenishment tube (202); a replenishment channel (207) is provided in the replenishment slider (204), and the replenishment channel (207) is connected to the inner cavity of the liquid storage cylinder (2) through a plurality of replenishment ports (208).

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