Foam hardener preparation device and use method thereof

Abstract

The invention belongs to the technical field of medical apparatus and instruments, and particularly relates to a foam hardener preparation device and a using method thereof.The foam hardener preparation device comprises a bottom plate, and a three-way valve and two preparation devices are arranged on the bottom plate; the two preparation cylinders are communicated with the three-way valve through connectors; the sliding piece is slidably mounted on the bottom plate in the central axis direction of the corresponding preparation cylinder, and the sliding piece is connected with the free end of the plug rod; the power output end of the positive and negative rotation motor is in transmission connection with a screw rod, and the screw rod is in threaded connection with one sliding piece; the two triggers are both installed on the bottom plate and located on the movement paths of the two sliding pieces correspondingly. The control system is in signal connection with the forward and reverse rotation motor and the two triggers, when the corresponding pistons move to the bottom of the preparation cylinder, the corresponding triggers are triggered by the sliding pieces, the triggers send signals to the control system, and then the control system controls the rotation direction of the forward and reverse rotation motor to change. The invention aims to solve the problems of high labor intensity and low preparation efficiency caused by structural defects of the conventional preparation device.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically relating to a foam hardener preparation device and its usage method. Background Technology

[0002] Currently, foam sclerotherapy is increasingly used in clinical practice to treat skin and mucous membrane diseases such as varicose veins, telangiectasia, hemorrhoids, and skin hemangiomas. Foam sclerotherapy agents need to be prepared on-site by medical staff during the treatment.

[0003] When using foam hardener, it is generally prepared on-site. The preparation method is as follows: connect a three-way valve to a syringe containing hardener injection solution and a syringe containing air or carbon dioxide, and quickly inject the hardener injection solution in the syringe into each other more than 20 times until an emulsified foam hardener is obtained.

[0004] The preparation device consists of only two syringes and a three-way valve. Although the structure is simple, the preparation relies solely on manual operation, which results in high labor intensity and low preparation efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide a foam hardener preparation device and its usage method to solve the problems of high labor intensity and low preparation efficiency caused by structural defects in existing preparation devices.

[0006] To achieve the above-mentioned technical objectives, the technical solution adopted by the present invention is as follows:

[0007] A foam curing agent preparation apparatus, comprising:

[0008] A base plate, wherein a three-way valve and two preparation devices are provided on the base plate;

[0009] The preparation device includes a preparation cylinder, a piston, and a stopper rod;

[0010] The three-way valve includes three ports, and both preparation cylinders are connected to the three-way valve via the ports.

[0011] Two sliding members are slidably mounted on the base plate along the central axis of the corresponding preparation cylinder, and the sliding members are connected to the free end of the plug rod;

[0012] A forward and reverse reversing motor is mounted on a base plate. The power output end of the forward and reverse reversing motor is connected to a lead screw, which is screwed to one of the sliding parts.

[0013] Two triggers, both of which are mounted on the base plate and are respectively located on the movement paths of the two sliders;

[0014] The control system is connected to the forward and reverse motors and two trigger signals. When the corresponding piston moves to the bottom of the preparation cylinder, the corresponding trigger is triggered by the slider, and the trigger sends a signal to the control system, which then controls the rotation direction of the forward and reverse motors to change.

[0015] Furthermore, the thread helix angle of the external thread groove of the lead screw is greater than the equivalent friction angle.

[0016] This structural design, by limiting the thread helix angle of the lead screw's thread groove, prevents the lead screw and the sliding component from self-locking due to the threaded engagement. As a result, when the sliding component is manually slidable, the lead screw can drive the power output shaft of the non-working forward and reverse motor to rotate, making it more convenient to use.

[0017] Furthermore, the three-way valve and the two preparation cylinders can be detachably mounted on the base plate;

[0018] The slider is detachably connected to the stopper rod.

[0019] This structural design allows for the detachable installation of the three-way valve and two preparation cylinders on the base plate, and the detachable connection of the sliding component and the stopper rod. After the preparation device is used, the three-way valve, preparation cylinder, piston, and stopper rod can be replaced, avoiding the reuse of parts that come into direct contact with the foam hardener, which would not meet hospital infection control requirements. Other parts can be reused, reducing operating costs and making the design highly practical.

[0020] Further specified, the upper end face of the base plate has two placement slots for placing the preparation cylinder, and the end of the placement slot away from the three-way valve is connected to the end face of the base plate;

[0021] A first fixing mechanism is detachably installed on the base plate;

[0022] The first fixing mechanism is used to apply pressure to the preparation cylinder toward the three-way valve and the placement groove.

[0023] This structural design, through the placement groove connected to the end face of the base plate away from the three-way valve, in conjunction with the first fixing mechanism, completes the axial and radial limiting of the preparation cylinder. The structure is simple, easy to install, and highly practical.

[0024] Furthermore, the upper end surface of the base plate is provided with a secondary groove that communicates with the placement groove;

[0025] The first fixing mechanism includes a first main body, the lower end face of which has a groove that fits against the outer wall of the preparation cylinder, and a limiting block is fixed on the first main body. The limiting block is located in the secondary groove and abuts against the end of the preparation cylinder away from the three-way valve.

[0026] A first locking mechanism is installed between the first fixing mechanism and the base plate. The first locking mechanism is used to detachably install the first fixing mechanism on the base plate.

[0027] This structural design uses a first fixing mechanism consisting of a first main body, a groove, and a limiting block. The limiting block and the secondary groove work together to form an axial limiting on the preparation cylinder. The first locking mechanism completes the detachable installation between the first fixing mechanism and the base plate. The groove fits against the outer wall of the preparation cylinder and works with the placement groove to form a radial limiting on the preparation cylinder. The structure is simple, easy to install, and highly practical.

[0028] Further specifying, the sliding member includes a sliding block and a fixed block;

[0029] The sliding block is slidably mounted on the base plate and screwed to the lead screw;

[0030] The fixing block can be detachably mounted on the sliding block;

[0031] A pusher plate is fixedly provided at the end of the piston rod away from the piston;

[0032] The fixing block has a fixing groove that matches the push plate.

[0033] This structural design uses a sliding block and a fixed block to form a sliding component, and the sliding component is fixedly connected to the plug rod by the cooperation of the push plate and the fixed groove. The structure is simple, easy to install, and highly practical.

[0034] Further, the upper end face of the sliding block is provided with a mounting groove, and the sliding block is provided with guide grooves on both sides of the mounting groove;

[0035] The fixing block includes a second body and a limiting part fixedly connected to the second body;

[0036] The fixing groove is formed on the lower end face of the second body;

[0037] The width of the limiting part is greater than the width of the second body;

[0038] The fixing block is located in the mounting groove, and guide strips matching the guide groove are fixed at both ends of the fixing block along the height direction of the fixing block.

[0039] This structural design divides the sliding block into a second main body with different widths and a limiting part. The guide groove and guide strip work together to guide the second main body into the second mounting groove. The limiting part with a larger width provides a handle for assembling and disassembling the sliding block, making it more convenient to use and more practical.

[0040] Furthermore, the base plate is provided with a limiting groove that matches the three-way valve, and the three-way valve is vertically installed in the limiting groove;

[0041] The base plate is also provided with a through groove that communicates with the placement groove, and the interface of the three-way valve is located in the through groove.

[0042] This structural design, through the cooperation of the limiting groove and the three-way valve, allows the three-way valve to be vertically inserted into the limiting groove during use, thereby restricting the lateral movement of the three-way valve and preventing it from shifting laterally.

[0043] The connection between the interface of the three-way valve and the preparation cylinder fixed on the base plate enables the three-way valve to be fixed. The structure is simple, easy to disassemble and assemble, and highly practical.

[0044] Further, it also includes sealed bags with one end open;

[0045] The sealed bag has a sealing strip at its open end;

[0046] The sealed bag is provided with a connecting tube that penetrates the sealed bag, and the connecting tube is detachably connected to one interface of the three-way valve.

[0047] This structural design, which uses a sealed bag to load and seal the base plate, preparation device, three-way valve, sliding parts, and forward and reverse motors, and then connects the three-way valve through a connecting pipe, can prevent the components of the preparation device other than the sealed bag from coming into contact with the operating room environment, thereby avoiding pollution of the operating room environment. It is highly practical.

[0048] The present invention also discloses a method for using a foam hardener preparation device, comprising the following steps;

[0049] 1) Rotate the valve of the three-way valve to connect the first preparation cylinder with the outside world, and manipulate the first sliding member to drive the piston away from the three-way valve via the plug rod, so that a certain amount of hardening agent injection liquid is drawn into the first preparation cylinder;

[0050] 2) Then rotate the valve of the three-way valve to connect the second preparation cylinder with the outside world, and manipulate the second sliding member to drive the piston away from the three-way valve through the plug rod, so that the second preparation cylinder draws in a corresponding amount of air;

[0051] 3) Then rotate the three-way valve to connect the two preparation cylinders;

[0052] 4) Start the forward and reverse motor. The forward and reverse motor drives the corresponding sliding part to move closer to the corresponding trigger via the lead screw. By utilizing the connection between the two preparation cylinders, the piston in the other preparation cylinder moves away from the corresponding trigger under atmospheric pressure.

[0053] 5) Until the slider moves towards the corresponding trigger and abuts against the trigger, the trigger sends a signal to the control system, and the control system controls the rotation direction of the forward and reverse motor to change.

[0054] 6) After the rotation direction of the forward and reverse motor changes, the slider that moved away from the corresponding trigger in the previous step moves towards the corresponding trigger until the second trigger is triggered.

[0055] 7) Repeat steps 5)-6) multiple times until the foam hardener is manufactured.

[0056] The invention employing the above technical solution has the following advantages:

[0057] 1. The forward and reverse motor drives one of the sliding parts through the lead screw. The two preparation cylinders are connected by a three-way valve, which realizes the linkage of the pistons in the two preparation cylinders. The sliding part connected to the plug rod triggers two triggers, thereby controlling the rotation direction of the forward and reverse motor, thus completing the preparation of the hardener, reducing labor intensity and improving preparation efficiency.

[0058] 2. By using two sliding parts to trigger the corresponding trigger when the corresponding piston moves to the bottom of the preparation cylinder, the preparation ratio of air and hardener injection solution can be arbitrarily adjusted to adapt to different preparation requirements, thus having a wider range of applications. Attached Figure Description

[0059] The present invention can be further illustrated by the non-limiting embodiments given in the accompanying drawings;

[0060] Figure 1 This is a schematic diagram of the structure of an embodiment of a foam hardener preparation device and its usage method according to the present invention. Figure 1 ;

[0061] Figure 2 This is a cross-sectional structural schematic diagram of an embodiment of a foam hardener preparation device and its usage method according to the present invention;

[0062] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0063] Figure 4 This is a schematic diagram of the structure of an embodiment of a foam hardener preparation device and its usage method according to the present invention. Figure 2 ;

[0064] Figure 5 This is a schematic diagram of the first main body in an embodiment of a foam hardener preparation device and its usage method according to the present invention;

[0065] Figure 6 This is a schematic diagram of the structure of the fixing block in an embodiment of the foam hardener preparation device and its usage method of the present invention;

[0066] The symbols for the main components are explained below:

[0067] Base plate 1, trigger 10, placement slot 11, secondary slot 12, guide rod 13

[0068] Preparation cylinder 2, aileron 20, piston 21, stopcock 22,

[0069] Push plate 23, fixing groove 230

[0070] First main body 3, groove 30

[0071] Limiting block 31, first card slot 310, first card block 311, first card strip 3110,

[0072] 32, clearance groove

[0073] 4. Three-way valve

[0074] Sliding component 5, sliding block 51, mounting groove 511, guide groove 512

[0075] Fixing block 52, second slot 520, second block 521, second strip 5210

[0076] Second main body 522, limiting part 523, guide bar 5220

[0077] 6-speed forward and reverse motor, 60-speed lead screw. Detailed Implementation

[0078] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that similar or identical parts are referred to by the same reference numerals in the drawings or description. Implementations not shown or described in the drawings are forms known to those skilled in the art. In addition, directional terms mentioned in the embodiments, such as "up," "down," "top," "bottom," "left," "right," "front," and "back," are only for reference to the directions in the drawings and are not intended to limit the scope of protection of the present invention.

[0079] like Figures 1-6 As shown, a foam curing agent preparation apparatus of the present invention includes:

[0080] Base plate 1, on which a three-way valve 4 and two preparation devices are provided;

[0081] The preparation apparatus includes a preparation cylinder 2, a piston 21, and a stopper rod 22;

[0082] The three-way valve 4 includes three ports, and both preparation cylinders 2 are connected to the three-way valve 4 through the ports;

[0083] Two sliding members 5 are slidably mounted on the base plate 1 along the central axis of the corresponding preparation cylinder 2, and the sliding members 5 are connected to the free end of the plug rod 22;

[0084] A forward and reverse motor 6 is mounted on a base plate 1. The power output end of the forward and reverse motor 6 is connected to a lead screw 60, which is screwed to one of the sliding parts 5.

[0085] Two triggers 10 are mounted on the base plate 1 and are respectively located on the movement path of the two sliders 5; the triggers 10 are preferably contact limit switches or photoelectric triggers.

[0086] The control system is connected to the forward and reverse motor 6 and two triggers 10. When the corresponding piston 21 moves to the bottom of the preparation cylinder 2, the corresponding trigger 10 is triggered by the slider 5. The trigger 10 sends a signal to the control system, and the control system controls the rotation direction of the forward and reverse motor 6 to change.

[0087] A method of using a foam hardener preparation apparatus includes the following steps;

[0088] 1) Rotate the valve of the three-way valve 4 to connect the first preparation cylinder 2 with the outside world, and control the first sliding member 5 to drive the piston 21 to move away from the three-way valve 4 via the plug rod 22, so that a certain amount of hardener injection liquid is drawn into the first preparation cylinder 2.

[0089] 2) Then turn the valve of the three-way valve 4 to connect the second preparation cylinder 2 with the outside world, and control the second sliding member 5 to drive the piston 21 to move away from the three-way valve 4 via the plug rod 22, so that the second preparation cylinder 2 draws in the corresponding amount of air;

[0090] 3) Then rotate the three-way valve 4 to connect the two preparation cylinders 2.

[0091] 4) Start the forward and reverse motor 6. The forward and reverse motor 6 drives the corresponding sliding part 5 to move closer to the corresponding trigger 10 via the lead screw 60. And by utilizing the connection between the two preparation cylinders 2, the piston 21 in the other preparation cylinder 2 moves away from the corresponding trigger 10 under atmospheric pressure.

[0092] 5) Until the slider 5 moves towards the corresponding trigger 10 and abuts against the trigger 10, the trigger 10 sends a signal to the control system, and the control system controls the rotation direction of the forward and reverse motor 6 to change.

[0093] 6) After the rotation direction of the forward and reverse motor 6 changes, the slider 5, which moved away from the corresponding trigger 10 in the previous step, moves towards the corresponding trigger 10 until the second trigger 10 is triggered.

[0094] 7) Repeat steps 5)-6) multiple times until the foam hardener is manufactured.

[0095] The preparation cylinder 2 is made of transparent material, and the surface of the preparation cylinder 2 is marked with graduations.

[0096] In practice, depending on the actual situation, a scale can be set on the plunger 22. In this embodiment, the movement position of the piston in the preparation cylinder 2 is displayed through a transparent material and a scale, which can more clearly control the amount of substance absorbed in the preparation device and make it more convenient to use.

[0097] In practical use, a regular syringe can also be used as the preparation device, reducing procurement costs.

[0098] The three-way valve 4 in this application is prior art and has been widely used in the preparation of hardeners, so it will not be described in detail here.

[0099] The thread helix angle of the external thread groove of the lead screw 60 is greater than the equivalent friction angle.

[0100] In practice, depending on the actual situation, the thread helix angle of the external thread groove of the lead screw 60 can be set to be less than the equivalent friction angle. In use, the control system controls the forward and reverse motor 6, thereby causing the sliding member 5 to move. In this embodiment, by limiting the thread helix angle of the thread groove of the lead screw 60, the lead screw 60 and the sliding member 5 will not form a self-locking due to the thread engagement. Thus, when the sliding member 5 is manually slid, the power output shaft of the forward and reverse motor 6, which is not in operation, can be driven to rotate via the lead screw 60, making it more convenient to use.

[0101] The three-way valve 4 and the two preparation cylinders 2 can be detachably installed on the base plate 1;

[0102] The slider 5 is detachably connected to the stopper rod 22.

[0103] In practice, depending on the actual situation, the three-way valve 4 and the two preparation cylinders 2 can be fixedly installed on the base plate 1, and the sliding member 5 can be fixedly connected to the stopper rod 22. In this embodiment, the three-way valve 4 and the two preparation cylinders 2 can be detachably installed on the base plate 1, and the sliding member 5 can be detachably connected to the stopper rod 22. After the preparation device is used, the three-way valve 4, preparation cylinder 2, piston 21 and stopper rod 22 can be replaced, avoiding the problem of reusing parts that come into direct contact with the foam hardener, which does not meet the hospital infection control requirements. Other parts can be reused, reducing the cost of use and making it more practical.

[0104] Two placement slots 11 are provided on the upper end face of the base plate 1 for placing the preparation cylinder 2. The end of the placement slot 11 away from the three-way valve 4 is connected to the end face of the base plate 1.

[0105] A first fixing mechanism is detachably installed on the base plate 1;

[0106] The first fixing mechanism is used to apply pressure to the preparation cylinder 2 toward the three-way valve 4 and the placement groove 11.

[0107] In practice, depending on the actual situation, an external thread can be directly set on the preparation cylinder 2, so that the preparation cylinder 2 is screwed onto the base plate 1 through the external thread, thereby realizing the detachable installation between the preparation cylinder 2 and the base plate 1. In this embodiment, the placement groove 11, which is connected to the end face of the base plate 1 away from the three-way valve 4, works in conjunction with the first fixing mechanism to complete the axial and radial limiting of the preparation cylinder 2. The structure is simple, the installation is convenient, and the practicality is strong.

[0108] The upper end face of the base plate 1 is provided with a secondary groove 12 that communicates with the placement groove 11;

[0109] The first fixing mechanism includes a first main body 3. The lower end face of the first main body 3 is provided with a groove 30 that fits against the outer wall of the preparation cylinder 2. A limiting block 31 is fixed on the first main body 3. The limiting block 31 is located in the secondary groove 12 and abuts against the end of the preparation cylinder 2 away from the three-way valve 4.

[0110] A first locking mechanism is installed between the first fixing mechanism and the base plate 1. The first locking mechanism is used to detachably install the first fixing mechanism on the base plate 1.

[0111] In practice, depending on the actual situation, a bolt screwed onto the base plate 1 can be selected as the first fixing mechanism. The side wall of the fixing bolt abuts against the end face of the preparation cylinder 2, and the head of the fixing bolt presses against the outer wall of the preparation cylinder 2. This, in conjunction with the placement groove 11, completes the purpose of fixing the preparation cylinder 2 in the placement groove 11. In this embodiment, the first fixing mechanism is composed of the first main body 3, the groove 30, and the limiting block 31. The mutual cooperation between the limiting block 31 and the secondary groove 12 forms an axial limit on the preparation cylinder 2. Then, the first locking mechanism completes the detachable installation between the first fixing mechanism and the base plate 1. The groove 30 fits against the outer wall of the preparation cylinder 2, and in conjunction with the placement groove 11, forms a radial limit on the preparation cylinder 2. The structure is simple, easy to install, and highly practical.

[0112] The first locking mechanism consists of two parts, each located on the outer wall of a limiting block 31.

[0113] The first locking mechanism includes a first locking slot 310, a first locking block 311, and a first torsion spring;

[0114] The first slot 310 is formed on the side wall of the base plate 1 along the length of the base plate 1;

[0115] The first locking block 311 is hinged to the limiting block 31. The lower inner wall of the first locking block 311 is provided with a first locking strip 3110 that matches the first locking groove 310. The lower end surface of the first locking strip 3110 is inclined outward from top to bottom.

[0116] The first torsion spring is installed between the first locking block 311 and the limiting block 31, and is used to drive the lower end of the first locking block 311 to flip inward.

[0117] In practice, depending on the actual situation, the first locking mechanism can also be set as a fixing bolt that passes through the first main body 3 and is screwed onto the base plate 1. In this embodiment, the first locking mechanism is formed by the first locking groove 310, the first locking block 311 and the first torsion spring. The two locking mechanisms are respectively set on the outer wall of the limiting block 31. By utilizing the inclined setting of the lower end face of the first locking strip 3110, the first main body 3 can be directly inserted downward to realize the installation of the first fixing mechanism, which is more convenient to use.

[0118] A secondary wing 20 is fixedly provided on the outer wall of the end of the preparation cylinder 2 away from the three-way valve 4;

[0119] The aileron 20 is located inside the aileron slot 12 and rests against the side wall of the limiting block 31.

[0120] The auxiliary wing 20 of the preparation cylinder 2 is accommodated by the auxiliary groove 12, and the auxiliary wing 20 is abutted by the side wall of the limiting block 31, which further strengthens the fixing strength of the preparation cylinder 2 and has strong practicality.

[0121] The first main body 3 has a clearance slot 32 for accommodating the aileron 20.

[0122] In practice, depending on the actual situation, a protrusion that radially presses the preparation cylinder 2 can be separately set on the first main body 3 to complete the radial limiting of the preparation cylinder 2. In this embodiment, the abutment 20 is avoided by the avoidance groove 32 on the first main body 3, so that the first main body 3 can make a larger contact with the preparation cylinder 2 beyond the abutment 20, further improving the fixing strength of the preparation cylinder 2, which is more practical.

[0123] The sliding component 5 includes a sliding block 51 and a fixed block 52;

[0124] The sliding block 51 is slidably mounted on the base plate 1 and screwed to the lead screw 60;

[0125] The fixing block 52 can be detachably installed on the sliding block 51;

[0126] A pusher plate 23 is fixedly provided at the end of the piston rod 22 away from the piston 21;

[0127] The fixing block 52 has a fixing groove 230 that matches the push plate 23.

[0128] In practice, depending on the actual situation, an integrated sliding component 5 can be directly selected, and bolts can be threaded onto the sliding component 5 and screwed onto the stopper rod 22 to achieve a fixed connection between the sliding component 5 and the stopper rod 22. In this embodiment, the sliding component 5 is composed of a sliding block 51 and a fixing block 52, and the fixed connection between the sliding component 5 and the stopper rod 22 is completed by the mutual cooperation of the push plate 23 and the fixing groove 230. The structure is simple, easy to install, and highly practical.

[0129] The side of the push plate 23 away from the stop rod 22 is in contact with the end face of the sliding block 51.

[0130] In practice, depending on the actual situation, the end face can be left unrestricted and the positioning can be done manually. In this embodiment, by using the contact between the push plate 23 and the end face of the sliding block 51, when the sliding member 5 and the plug rod 22 are fixedly connected, the sliding block 51 can be pushed to contact with the push plate 23 first, and the push plate 23 can be used to position the sliding block 51. Then the fixing block 52 can be installed, which is more convenient to use and has strong practicality.

[0131] A second locking mechanism is provided between the sliding block 51 and the fixed block 52;

[0132] The second locking mechanism consists of two parts, located on both sides of the fixing block 52.

[0133] The second locking mechanism includes a second locking slot 520, a second locking block 521, and a second torsion spring;

[0134] The second slot 520 is formed on the side wall of the sliding block 51 along the length of the base plate 1;

[0135] The second locking block 521 is hinged to the fixed block 52. The lower inner wall of the second locking block 521 is provided with a second locking strip 5210 that matches the second locking groove 520. The lower end face of the second locking strip 5210 is inclined outward from top to bottom.

[0136] The second torsion spring is installed between the second locking block 521 and the fixing block 52, and is used to drive the lower end of the second locking block 521 to flip inward.

[0137] In practice, depending on the actual situation, the second locking mechanism can also be set as a fixing bolt that passes through the fixing block 52 and is screwed onto the fixing block 52. In this embodiment, the second locking mechanism is formed by the second locking groove 520, the second locking block 521, and the second torsion spring. The two locking mechanisms are respectively set on both sides of the fixing block 52. By utilizing the inclined setting of the lower end face of the second locking strip 5210, the fixing block 52 can be directly inserted downward to realize the installation of the second fixing mechanism, which is more convenient to use.

[0138] The upper end face of the sliding block 51 is provided with a mounting groove 511, and the sliding block 51 is provided with guide grooves 512 on both sides of the mounting groove 511.

[0139] The fixing block 52 includes a second body 522 and a limiting part 523 fixedly connected to the second body 522;

[0140] The fixing groove 230 is formed on the lower end face of the second body 522, and the second locking block 521 is installed on the end of the limiting part 523;

[0141] The width of the limiting part 523 is greater than the width of the second body 522;

[0142] The fixing block 52 is located in the mounting groove 511, and guide strips 5220 that match the guide groove 512 are fixedly provided at both ends of the fixing block 52 along the height direction of the fixing block 52.

[0143] In practice, depending on the actual situation, an installation groove 511 can be opened on the fixed block 52 to cover the sliding block 51, thereby realizing the connection between the sliding block 51 and the fixed block 52. In this embodiment, the sliding block 51 is divided into a second main body 522 and a limiting part 523 with different width dimensions. The guide groove 512 and the guide strip 5220 cooperate to guide the second main body 522 into the second installation groove 511. The limiting part 523 with a larger width dimension provides a handle for the installation and removal of the sliding block 51, which is more convenient to use and has strong practicality.

[0144] A limiting groove matching the three-way valve 4 is provided on the base plate 1, and the three-way valve 4 is vertically installed in the limiting groove;

[0145] The base plate 1 is also provided with a through groove that communicates with the placement groove 11, and the interface of the three-way valve 4 is located in the through groove.

[0146] In practice, depending on the actual situation, a method such as directly setting a rectangular internal thread post on the three-way valve 4 and screwing a bolt through the base plate 1 into the rectangular internal thread post of the three-way valve 4 can be used to achieve a detachable connection between the base plate 1 and the three-way valve 4. In this embodiment, through the mutual cooperation between the limiting groove and the three-way valve 4, when in use, the three-way valve 4 can be vertically inserted into the limiting groove to form a lateral restriction on the three-way valve 4 and prevent the three-way valve 4 from lateral displacement.

[0147] The connection between the interface of the three-way valve 4 and the preparation cylinder 2 fixed on the base plate 1 enables the fixation of the three-way valve 4. The structure is simple, easy to disassemble and assemble, and highly practical.

[0148] It also includes a sealed bag with one end open;

[0149] The sealed bag has a sealing strip at the open end;

[0150] The sealed bag is equipped with a connecting tube that passes through the sealed bag, and the connecting tube is detachably connected to one interface of the three-way valve 4.

[0151] In practice, depending on the actual situation, the preparation device can be sterilized directly without a sealing bag. In this embodiment, the base plate 1, the preparation device, the three-way valve 4, the sliding part 5 and the forward and reverse motor 6 are sealed by a sealing bag, and then connected to the three-way valve 4 by a connecting pipe. This can prevent the components of the preparation device other than the sealing bag from coming into contact with the operating room environment, thereby avoiding pollution of the operating room environment. This method is highly practical.

[0152] Base plate 1 includes two guide frames;

[0153] Each guide frame includes two guide rods 13. The sliding block 51 of the sliding member 5 has a guide hole, and the guide rod 13 passes through the guide hole.

[0154] In practice, depending on the actual situation, a dovetail groove can be set on the sliding block 51, and a dovetail block can be set on the base plate 1 and slidably installed in the dovetail groove to achieve sliding installation between the base plate 1 and the sliding member 5. In this embodiment, a guide frame is formed by two guide rods 13 to achieve the purpose of sliding the sliding member 5 on the base plate 1. The structure is simple and the stability is strong.

[0155] In this embodiment, during installation, the three-way valve 4 is first vertically inserted into the limiting groove of the base plate 1, and the two ports of the three-way valve 4 are respectively located in the through grooves communicating with the placement groove 11, with the empty ports facing outwards.

[0156] Then push the piston in the preparation device to the bottom, and then put the preparation cylinders 2 of the two preparation devices into the placement groove 11 from the end away from the three-way valve 4, so that the auxiliary wing 20 is located in the auxiliary groove 12. Then push the preparation device towards the three-way valve 4, so that the preparation cylinder 2 and the auxiliary wing 20 slide in the placement groove 11 and the auxiliary groove 12 respectively, until the preparation cylinder 2 is connected to the interface of the corresponding three-way valve 4. At this time, the front end of the preparation cylinder 2 abuts against the front end of the placement groove 11, and the auxiliary wing 20 abuts against the front side of the auxiliary groove 12.

[0157] Then, the limiting block 31 of the first main body 3 is aligned with the sub-groove 12, and the clearance groove 32 is aligned with the aileron 20. Then, the first main body 3 is pressed down, so that the limiting block 31 is inserted into the sub-groove 12 and the aileron 20 is inserted into the clearance groove 32, until the base plate 1 pushes the first locking block 311 to overcome the first torsion spring and flips outward, until the first locking strip 3110 is inserted into the first locking groove 310, thus completing the purpose of the first fixing mechanism to fix the preparation cylinder 2 on the base plate 1.

[0158] Then push the sliding block 51 towards the push plate 23 until the sliding block 51 abuts against the push plate 23. Then align the second body 522 of the fixing block 52 with the mounting groove 511 of the sliding block 51, align the guide strip 5220 with the guide groove 512, and push the fixing block 52 downward until the push plate 23 is inserted into the fixing groove 230.

[0159] Continue pressing down until the fixed block 52 is fixed on the sliding block 51 by the first locking block 311, thus completing the connection between the plug rod 22, the sliding block 51 and the fixed block 52.

[0160] Open the sealed bag and turn it over, turning the outside of the sealed bag to the inside. After inserting the bottom plate 1 with two preparation devices into the sealed bag, close the sealing strip of the sealed bag, and then connect the connecting pipe to the empty interface of the three-way valve 4.

[0161] When in use, turn the valve of the three-way valve 4 through the sealed bag to connect the first preparation cylinder 2 with the outside. Manually push the first sliding part 5 through the plug rod 22 to drive the piston 21 to move away from the three-way valve 4, so that the first preparation cylinder 2 draws in a certain amount of hardener injection liquid through the connecting tube.

[0162] Then turn the valve of the three-way valve 4 to connect the second preparation cylinder 2 with the outside world, and manually push the second sliding part 5 through the plug rod 22 to drive the piston 21 to move away from the three-way valve 4, so that the second preparation cylinder 2 draws in air through the connecting pipe in a number of times the amount of hardener injection liquid;

[0163] Then, rotate the valve of the three-way valve 4 to connect the two preparation cylinders 2.

[0164] Start the forward and reverse motor 6. The forward and reverse motor 6 drives the corresponding sliding part 5 to move closer to the corresponding trigger 10 via the lead screw 60. And by utilizing the connection between the two preparation cylinders 2, the piston 21 in the other preparation cylinder 2 moves away from the corresponding trigger 10 under atmospheric pressure.

[0165] Until the slider 5 moves towards the corresponding trigger 10 and abuts against the trigger 10, the trigger 10 sends a signal to the control system, and the control system controls the rotation direction of the forward and reverse motor 6 to change.

[0166] After the rotation direction of the forward and reverse motor 6 changes, the slider 5, which moved away from the corresponding trigger 10 in the previous step, moves towards the corresponding trigger 10 until the second trigger 10 is triggered.

[0167] Repeat the above steps multiple times until the foam hardener is manufactured. At this time, one of the triggers 10 is in the triggered state. The piston 21 in the corresponding preparation vessel of this trigger 10 is located at the bottom of the corresponding preparation cylinder 2. That is, there is no hardener in this preparation vessel, and all the prepared hardener is in another preparation vessel.

[0168] Turn the valve of the three-way valve 4 again to connect the preparation device containing the hardener with the connecting pipe, and then manually push the sliding part 5 of the preparation device to discharge the hardener through the connecting pipe.

[0169] For the second preparation, repeat the above steps, reabsorb the hardener injection solution and air, and then prepare the hardener.

[0170] After the surgery is completed, open the sealed bag, remove the preparation device and three-way valve 4 and discard them;

[0171] The remaining parts can be reused in the next surgery.

[0172] The foregoing has provided a detailed description of the foam hardener preparation apparatus and its usage method provided by the present invention. The specific embodiments described are merely for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A foam hardener preparation apparatus, characterized in that: include: A base plate (1) is provided with a three-way valve (4) and two preparation devices; The preparation device includes a preparation cylinder (2), a piston (21), and a stopper rod (22); The three-way valve (4) includes three ports, and both preparation cylinders (2) are connected to the three-way valve (4) through the ports; Two sliding members (5) are slidably mounted on the base plate (1) along the central axis of the corresponding preparation cylinder (2), and the sliding members (5) are connected to the free end of the plug rod (22); A forward and reverse motor (6) is mounted on a base plate (1). The power output end of the forward and reverse motor (6) is connected to a lead screw (60), and the lead screw (60) is screwed to one of the sliding parts (5). Two triggers (10) are mounted on the base plate (1) and located on the movement paths of the two sliders (5); The control system is connected to the forward and reverse motor (6) and two triggers (10). When the corresponding piston (21) moves to the bottom of the preparation cylinder (2), the corresponding trigger (10) is triggered by the slider (5). The trigger (10) sends a signal to the control system, and the control system controls the rotation direction of the forward and reverse motor (6) to change.

2. The foam curing agent preparation apparatus according to claim 1, characterized in that: The thread helix angle of the external thread groove of the lead screw (60) is greater than the equivalent friction angle.

3. The foam curing agent preparation apparatus according to claim 1, characterized in that: The three-way valve (4) and the two preparation cylinders (2) can be detachably installed on the base plate (1); The slider (5) is detachably connected to the stopper (22).

4. The foam curing agent preparation apparatus according to claim 3, characterized in that: The upper end face of the base plate (1) has two placement slots (11) for placing the preparation cylinder (2), and the end of the placement slot (11) away from the three-way valve (4) is connected to the end face of the base plate (1). A first fixing mechanism is detachably installed on the base plate (1); The first fixing mechanism is used to apply pressure to the preparation cylinder (2) toward the three-way valve (4) and the placement groove (11).

5. The foam hardener preparation apparatus according to claim 4, characterized in that: The upper end face of the base plate (1) is provided with a secondary groove (12) that communicates with the placement groove (11). The first fixing mechanism includes a first body (3), the lower end face of the first body (3) is provided with a groove (30) that fits against the outer wall of the preparation cylinder (2), and a limiting block (31) is fixed on the first body (3). The limiting block (31) is located in the sub-groove (12) and abuts against the end of the preparation cylinder (2) away from the three-way valve (4). A first locking mechanism is installed between the first fixing mechanism and the base plate (1). The first locking mechanism is used to detachably install the first fixing mechanism on the base plate (1).

6. The foam curing agent preparation apparatus according to claim 1, characterized in that: The sliding member (5) includes a sliding block (51) and a fixed block (52); The sliding block (51) is slidably mounted on the base plate (1) and screwed to the lead screw (60); The fixing block (52) is detachably mounted on the sliding block (51); The end of the piston rod (22) away from the piston (21) is fixedly provided with a pusher plate (23); The fixing block (52) is provided with a fixing groove (230) that matches the push plate (23).

7. The foam curing agent preparation apparatus according to claim 6, characterized in that: The upper end face of the sliding block (51) is provided with an installation groove (511), and the sliding block (51) is provided with guide grooves (512) on both sides of the installation groove (511). The fixing block (52) includes a second body (522) and a limiting part (523) fixedly connected to the second body (522); The fixing groove (230) is formed on the lower end face of the second body (522); The width of the limiting part (523) is greater than the width of the second body (522); The fixing block (52) is located in the mounting groove (511), and the two ends of the fixing block (52) are fixed with guide strips (5220) that match the guide groove (512) along the height direction of the fixing block (52).

8. The foam curing agent preparation apparatus according to claim 1, characterized in that: The base plate (1) is provided with a limiting groove that matches the three-way valve (4), and the three-way valve (4) is installed vertically in the limiting groove; The base plate (1) is also provided with a through groove that communicates with the placement groove (11), and the interface of the three-way valve (4) is located in the through groove.

9. The foam curing agent preparation apparatus according to claim 1, characterized in that: It also includes a sealed bag with one end open; The sealed bag has a sealing strip at its open end; The sealed bag is provided with a connecting pipe that penetrates the sealed bag, and the connecting pipe is detachably connected to one interface of the three-way valve (4).

10. A method of using a foam hardener preparation apparatus as described in any one of claims 1-9, characterized in that, Includes the following steps; 1) Rotate the valve of the three-way valve (4) to connect the first preparation cylinder (2) with the outside world, and control the first sliding member (5) to drive the piston (21) to move away from the three-way valve (4) via the plug rod (22), so that a certain amount of hardening agent injection liquid is drawn into the first preparation cylinder (2); 2) Then rotate the valve of the three-way valve (4) to connect the second preparation cylinder (2) with the outside world, and manipulate the second sliding member (5) to drive the piston (21) to move away from the three-way valve (4) through the plug rod (22), so that the second preparation cylinder (2) draws in a corresponding amount of air; 3) Then rotate the valve of the three-way valve (4) to connect the two preparation cylinders (2) to each other; 4) Start the forward and reverse motor (6). The forward and reverse motor (6) drives the corresponding sliding part (5) to move closer to the corresponding trigger (10) via the lead screw (60). By utilizing the connection between the two preparation cylinders (2), the piston (21) in the other preparation cylinder (2) moves away from the corresponding trigger (10) under atmospheric pressure. 5) Until the slider (5) moves towards the corresponding trigger (10) and abuts against the trigger (10), the trigger (10) sends a signal to the control system, and the control system controls the rotation direction of the forward and reverse motor (6) to change. 6) After the rotation direction of the forward and reverse motor (6) changes, the slider (5) that moved away from the corresponding trigger (10) in the previous step moves towards the corresponding trigger (10) until the second trigger (10) is triggered. 7) Repeat steps 5)-6) multiple times until the foam hardener is manufactured.

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