A new inflator

Abstract

This invention provides a novel inflation device, mainly used for inflating and deflating medical airbags. The device consists of an inflation bag and a valve assembly. The inflation bag is fixedly equipped with an inlet one-way valve and connected to a connector via a three-way regulating valve, a hose, and a valve assembly. The valve assembly includes a screw tube, a fixing component, and a sealing component. The sealing component consists of a pressing block, a spring, and a first sealing ring. During inflation, the connector and the screw tube are sealed together. Pushing the pressing block opens the square hole of the first sealing ring, allowing gas to enter the medical airbag through the valve assembly. After inflation, the connector is disassembled to separate the airbag. After surgery, pressing the pressing block opens the square hole of the first sealing ring, expelling the gas from the airbag. This invention uses a threaded structure to connect the inflation bag and the valve assembly, improving sealing and preventing damage to the medical airbag body, thus achieving rapid inflation and deflation.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to a novel inflation device. Background Technology

[0002] In the medical field, medical airbags are an important medical device widely used in various clinical scenarios, including but not limited to surgery, rehabilitation therapy, and daily care. Their main function is to provide support, compression, expansion, or isolation through inflation or fluid filling to meet different medical needs. Medical airbags require an inflation device for inflation. Most existing medical airbags use needle-type connections, which can easily damage the airbag itself and pose a safety hazard of needle puncture wounds. Utility Model Content

[0003] The purpose of this invention is to provide a novel inflation device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A novel inflation device, comprising an air bladder and a valve assembly. The air bladder is fixedly equipped with an air intake one-way valve. The air bladder is fixedly connected to a three-way regulating valve. The three-way regulating valve is fixedly connected to a flexible hose. The flexible hose is fixedly connected to a connector. The valve assembly includes a threaded tube, a fixing component, and a sealing component. The connector is sealed to the threaded tube via a threaded section. The threaded tube is fixedly connected to the fixing component. The fixing component has a square hole, which is sealed to the sealing component. The sealing component includes a pressing block, a spring, and a first sealing ring. The pressing block is elastically connected to the fixing component via the spring. The pressing block has a connecting rod, which is fixedly connected to the first sealing ring.

[0005] Preferably, the three-way regulating valve is provided with a mounting base, the mounting base is provided with a through hole, a valve plate is fixedly installed in the mounting base, and a knob is movably installed in the mounting base.

[0006] Preferably, the connector is fixedly equipped with a second sealing ring.

[0007] Preferably, the connector is made of polycarbonate or stainless steel.

[0008] Preferably, the connecting rod is provided with a screw hole, and the connecting rod is fixedly connected to the first sealing ring by bolts.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] This invention consists of two parts: an airbag and a valve assembly. The valve assembly is sealed to the medical airbag and includes a screw tube, a fixing component, and a sealing component. The sealing component includes a pressing block, a spring, and a first sealing ring. The airbag is fixedly connected to a three-way regulating valve, which is fixedly connected to a flexible tube. The flexible tube is fixedly connected to a connector. During inflation, the connector is screwed to the screw tube to seal the connector to the valve assembly. The connector pushes the pressing block, which in turn moves the connecting rod, causing the first sealing ring to open its square hole, allowing the airbag to communicate with the medical airbag. By repeatedly pressing the airbag, in conjunction with the one-way air inlet valve, airflow is introduced into the medical airbag to complete the inflation process. Then, the connector is unscrewed to separate the airbag and the valve assembly. This invention uses a threaded structure to connect the airbag and the valve assembly, improving the sealing performance and preventing damage to the medical airbag body during inflation.

[0011] When deflated, this invention allows the first sealing ring to open its square hole by pressing the pressing block, which in turn moves the connecting rod, thus quickly completing the deflation operation. Attached Figure Description

[0012] Figure 1 This is the first perspective structural view of this utility model.

[0013] Figure 2 This is the second perspective structural view of this utility model.

[0014] Figure 3 This is an exploded structural view of the inflatable component of this utility model.

[0015] Figure 4 This is a cross-sectional structural view of the present invention.

[0016] Figure 5 This is an exploded structural view of the valve assembly of this utility model.

[0017] The diagram shows: 1. Inflator bag; 2. Valve assembly; 3. Intake check valve; 4. Three-way regulating valve; 5. Hose; 6. Connector; 7. Screw; 8. Fixing component; 9. Sealing assembly; 10. Threaded section; 11. Square hole; 12. Pressing block; 13. Spring; 14. First sealing ring; 15. Connecting rod; 16. Mounting seat; 17. Through hole; 18. Valve plate; 19. Knob; 20. Second sealing ring; 21. Screw hole; 22. Bolt. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example 1:

[0020] This utility model provides a novel inflation device, comprising an air bladder 1 and a valve assembly 2. The air bladder 1 is fixedly equipped with an air intake one-way valve 3, and is fixedly connected to a three-way regulating valve 4. The three-way regulating valve 4 is fixedly connected to a hose 5, and the hose 5 is fixedly connected to a connector 6. The valve assembly 2 includes a threaded tube 7, a fixing member 8, and a sealing assembly 9. The connector 6 is sealed to the threaded tube 7 via a threaded section 10. The threaded tube 7 is fixedly connected to the fixing member 8. The fixing member 8 has a square hole 11, which is sealed to the sealing assembly 9. The sealing assembly 9 includes a pressing block 12, a spring 13, and a first sealing ring 14. The pressing block 12 is elastically connected to the fixing member 8 via the spring 13. The pressing block 12 has a connecting rod 15, which is fixedly connected to the first sealing ring 14. The three-way regulating valve 4 has a mounting seat 16, which has a through hole 17. A valve plate 18 is fixedly installed inside the mounting seat 16, and a knob 19 is movably installed on the mounting seat 16. The connector 6 is fixedly fitted with a second sealing ring 20. The connector 6 is made of polycarbonate or stainless steel. The connecting rod 15 is provided with a screw hole 21, and the connecting rod 15 is fixedly connected to the first sealing ring 14 by bolts 22.

[0021] Through the above technical solution, this utility model consists of two parts: an airbag 1 and a valve assembly 2. The valve assembly 2 is sealed to the medical airbag. The valve assembly 2 includes a screw tube 7, a fixing member 8, and a sealing component 9. The sealing component 9 includes a pressing block 12, a spring 13, and a first sealing ring 14. The airbag 1 is fixedly connected to a three-way regulating valve 4, which is fixedly connected to a hose 5. The hose 5 is fixedly connected to a connector 6. During inflation, the connector 6 is screwed and fixed to the screw tube 7, so that the connector 6 is connected to the valve assembly 2. The airtight connection is achieved by the connector 6 pushing the pressing block 12 and driving the connecting rod 15 to move, causing the first sealing ring 14 to open the square hole 11, allowing the airbag 1 to connect with the medical airbag. Then, by repeatedly pressing the airbag 1, in conjunction with the one-way air inlet valve 3, airflow is allowed to fill the medical airbag, completing the inflation process. Then, the connector 6 is unscrewed to separate the airbag 1 and the valve assembly 2. This utility model uses a threaded structure to connect the airbag 1 and the valve assembly 2, improving the connection sealing and preventing the inflation device from damaging the medical airbag body during inflation.

[0022] When deflation occurs, pressing the pressing block 12 causes the connecting rod 15 to move, which opens the square hole 11 of the first sealing ring 14, allowing the gas inside the medical airbag to be discharged through the square hole 11, thus quickly completing the deflation operation.

[0023] Example 2:

[0024] In this embodiment, the air inflator 1 is fixedly installed with an air intake one-way valve 3. The air inflator 1 is fixedly connected to a three-way regulating valve 4. The three-way regulating valve 4 is fixedly connected to a hose 5. The hose 5 is fixedly connected to a connector 6. The valve assembly 2 includes a screw tube 7, a fixing member 8, and a sealing assembly 9. The connector 6 is sealed to the screw tube 7 through a threaded section 10. The screw tube 7 is fixedly connected to the fixing member 8. The fixing member 8 has a square hole 11, which is sealed to the sealing assembly 9. The sealing assembly 9 includes a pressing block 12, a spring 13, and a first sealing ring 14. The pressing block 12 is elastically connected to the fixing member 8 through the spring 13. The pressing block 12 has a connecting rod 15, which is fixedly connected to the first sealing ring 14.

[0025] During the inflation process, the operator first screws the connector 6 to the threaded section 10 of the valve assembly 2 to ensure a reliable seal between them. As the connector 6 is gradually screwed into the threaded section 7, its end contacts the pressing block 12 of the sealing assembly 9. As the tightening continues, the connector 6 applies downward pressure to the pressing block 12, causing it to move downward against the spring force of the spring 13. This movement is transmitted to the first sealing ring 14 via the connecting rod 15, causing it to disengage from the square hole 11 of the fixing member 8. This opens the square hole 11, allowing the airbag 1 to connect with the internal passage of the valve assembly 2 through the hose 5 and the three-way regulating valve 4, and ultimately with the inside of the medical airbag. The operator then repeatedly presses the airbag 1, allowing air to enter through the one-way valve 3, then through the three-way regulating valve 4 and the hose 5, and finally inflating the medical airbag through the opened square hole 11. The one-way air inlet valve 3 ensures that the airflow can only flow in one direction, preventing gas backflow and ensuring inflation efficiency. After inflation is complete, the operator unscrews the connector 6 from the screw tube 7, releasing the pressure of the connector 6 on the pressing block 12. The elastic force of the spring 13 causes the pressing block 12 and the connecting rod 15 to return to their original positions, and the first sealing ring 14 re-seals the square hole 11 to prevent the medical airbag from leaking, thus separating the airbag 1 and the valve assembly 2.

[0026] During the deflation process, the operator does not need to connect the airbag 1, but instead manually presses the pressing block 12 on the valve assembly 2. When the pressing block 12 is subjected to downward pressure, it overcomes the elastic force of the spring 13 and moves, causing the first sealing ring 14 to disengage from the square hole 11 via the connecting rod 15, opening the square hole 11 to communicate with the external environment. The gas inside the medical airbag is then quickly released through the square hole 11, achieving deflation. After releasing the pressing block 12, the elastic force of the spring 13 causes the pressing block 12 and the connecting rod 15 to return to their original positions, and the first sealing ring 14 re-seals the square hole 11, ensuring the device returns to a sealed state.

[0027] This embodiment achieves a highly airtight connection between the airbag 1 and the valve assembly 2 through a threaded connection structure, avoiding the risk of damage or puncture to the medical airbag body that might occur with a needle-type connection. The threaded connection provides stable mechanical fixation, ensuring no gas leakage during inflation and simplifying the operation process. The spring 13 and the first sealing ring 14 in the sealing assembly 9 work together to automatically control the opening and closing of the square hole 11 during inflation and deflation, improving the reliability and safety of the device. The entire device has a compact structure and is suitable for various inflation needs in medical environments, such as surgical support, rehabilitation compression, or daily care scenarios.

[0028] Example 3:

[0029] In this embodiment, the airbag 1 is fixedly equipped with an air intake one-way valve 3. The airbag 1 is fixedly connected to a three-way regulating valve 4, which is fixedly connected to a hose 5. The hose 5 is fixedly connected to a connector 6. The valve assembly 2 includes a screw tube 7, a fixing member 8, and a sealing assembly 9. The connector 6 is sealed to the screw tube 7 via a threaded section 10. The screw tube 7 is fixedly connected to the fixing member 8. The fixing member 8 has a square hole 11, which is sealed to the sealing assembly 9. The sealing assembly 9 includes a pressing block 12, a spring 13, and a first sealing ring 14. The pressing block 12 is elastically connected to the fixing member 8 via the spring 13. The pressing block 12 has a connecting rod 15, which is fixedly connected to the first sealing ring 14. The three-way regulating valve 4 has a mounting seat 16 with a through hole 17. A valve plate 18 is fixedly installed inside the mounting seat 16, and a knob 19 is movably installed on the mounting seat 16. By rotating the knob 19, the gas inside the medical airbag is discharged, and the volume of the medical airbag is finely adjusted.

[0030] During inflation, connector 6 is screwed onto the threaded section 10 of valve assembly 2 to achieve a sealed connection. As connector 6 is screwed in, it pushes the pressing block 12, which in turn moves the connecting rod 15. The connecting rod 15 then moves the first sealing ring 14, opening the square hole 11 of the fixing member 8. At this point, the airbag 1 is connected to the medical airbag via the hose 5 and the three-way regulating valve 4. The user repeatedly presses the airbag 1, and airflow enters the airbag 1 through the one-way inlet valve 3, then flows into the medical airbag through the three-way regulating valve 4 and the hose 5, completing the inflation process. After inflation, connector 6 is unscrewed from the threaded section 7, separating the airbag 1 from the valve assembly 2. The pressing block 12 resets under the action of the spring 13, and the first sealing ring 14 re-seals the square hole 11, preventing air leakage from the medical airbag.

[0031] During deflation, the user fine-tunes the volume of the medical airbag by rotating the knob 19 of the three-way regulating valve 4. Rotation of the knob 19 drives the valve plate 18 within the mounting base 16 to move, changing the opening degree of the through-hole 17, thereby controlling the flow rate of gas discharged from the medical airbag through the hose 5 and the three-way regulating valve 4. This fine-tuning mechanism allows the user to precisely control the deflation rate, avoiding sudden changes in the volume of the medical airbag due to rapid deflation. It is suitable for medical scenarios requiring precise adjustments, such as compression support during surgery or gradual decompression in rehabilitation therapy. After the gas is discharged, the volume of the medical airbag decreases, achieving the desired fine-tuning effect.

[0032] The working principle of this embodiment is based on the precision structure of the three-way regulating valve 4 and the sealing mechanism of the valve assembly 2. The mounting seat 16 of the three-way regulating valve 4 provides an airflow channel through the through-hole 17. The fixed installation of the valve plate 18 ensures the stability of airflow control, while the movable installation of the knob 19 provides user convenience. When the knob 19 is rotated, the position of the valve plate 18 changes, adjusting the orifice diameter of the through-hole 17, thereby fine-tuning the gas flow rate and achieving a gradual change in the volume of the medical balloon. This design avoids the risk of puncture wounds and balloon damage associated with traditional needle-type connections, while improving overall sealing and safety through threaded connections and the sealing assembly 9. The fine-tuning function is particularly suitable for medical applications where precise pressure or volume requirements are needed, such as balloon expansion or catheter fixation in endoscopic surgery, ensuring a smooth and controllable operation.

[0033] Example 4:

[0034] In this embodiment, the air inflator 1 is fixedly equipped with an air intake one-way valve 3. The air inflator 1 is fixedly connected to a three-way regulating valve 4. The three-way regulating valve 4 is fixedly connected to a hose 5. The hose 5 is fixedly connected to a connector 6. The valve assembly 2 includes a screw tube 7, a fixing member 8, and a sealing assembly 9. The connector 6 is sealed to the screw tube 7 through a threaded section 10. The screw tube 7 is fixedly connected to the fixing member 8. The fixing member 8 has a square hole 11, which is sealed to the sealing assembly 9. The sealing assembly 9 includes a pressing block 12, a spring 13, and a first sealing ring 14. The pressing block 12 is elastically connected to the fixing member 8 through the spring 13. The pressing block 12 has a connecting rod 15, which is fixedly connected to the first sealing ring 14. The connector 6 is fixedly equipped with a second sealing ring 20, which improves the airtightness of the connection.

[0035] During the inflation process, the operator first screws the connector 6 to the screw tube 7 of the valve assembly 2 through the threaded section 10. As the connector 6 is screwed into the screw tube 7, its end gradually contacts and pushes the pressing block 12. The pressing block 12 is pushed by the connector 6 and moves backward against the elastic force of the spring 13. The movement of the pressing block 12 drives the connecting rod 15 to move synchronously. The connecting rod 15 drives the first sealing ring 14 away from the square hole 11 of the fixing part 8, thereby opening the square hole 11 and allowing the airbag 1 to communicate with the inside of the valve assembly 2 through the hose 5, the three-way regulating valve 4 and the connector 6, thus forming a passage with the medical airbag.

[0036] The operator then repeatedly presses the air bladder 1. During the pressing process, the air bladder 1 generates airflow. The airflow enters the interior of the air bladder 1 through the one-way valve 3, which ensures that the airflow can only flow into the air bladder 1 in one direction to prevent backflow. The airflow then passes through the three-way regulating valve 4, which can adjust the airflow direction and flow rate to ensure that the inflation process is controllable. The airflow is transmitted to the connector 6 through the hose 5. The connector 6 is tightly fixed to the screw tube 7 through a threaded connection. The second sealing ring 20 fixedly installed on the connector 6 forms an additional sealing layer at the threaded connection. The second sealing ring 20 is made of elastic material and can be compressed when the thread is tightened, filling the tiny gap between the connector 6 and the screw tube 7, effectively preventing gas leakage and improving the airtightness of the connection.

[0037] Airflow enters the valve assembly 2 through the connector 6 and then enters the medical airbag through the open square hole 11 to inflate it. During inflation, the second sealing ring 20 ensures that there is no leakage at the connection and that all airflow enters the medical airbag, preventing reduced inflation efficiency or operational failure due to leakage. After inflation, the operator unscrews the connector 6 from the screw tube 7. When the connector 6 is removed, the pressing block 12 resets under the elastic force of the spring 13, driving the connecting rod 15 and the first sealing ring 14 back to the position of the square hole 11, resealing the square hole 11 to prevent gas leakage from the medical airbag. The airbag 1 is then separated from the valve assembly 2, and the inflation device can be reused.

[0038] During the deflation operation, the operator does not need to connect the airbag 1, but directly presses the pressing block 12 of the valve assembly 2. When the pressing block 12 is pressed, it overcomes the elastic force of the spring 13 and drives the connecting rod 15 to move, causing the first sealing ring 14 to leave the square hole 11 and open the square hole 11. The gas inside the medical airbag is quickly discharged through the square hole 11, achieving rapid deflation. After releasing the pressing block 12, the spring 13 pushes the pressing block 12 to reset, and the first sealing ring 14 re-seals the square hole 11, ensuring that the medical airbag remains sealed in the non-deflation state.

[0039] In this embodiment, the installation of the second sealing ring 20 significantly enhances the airtightness of the connection between the connector 6 and the threaded tube 7. The second sealing ring 20 is located at the end of the connector 6 or at the root of the thread. During the tightening process, it forms a tight contact with the inner wall or end face of the threaded tube 7. The elastic deformation capability of the second sealing ring 20 enables it to adapt to different tightening forces and thread tolerances, ensuring effective sealing under various operating conditions, preventing gas leakage from the thread gap, and improving the reliability and safety of the inflation device.

[0040] The presence of the second sealing ring 20 also reduces the excessive reliance on thread tightening force during operation. Even if the threaded connection is not fully tightened, the second sealing ring 20 can provide a preliminary seal, reducing the difficulty of operation and improving the user experience. At the same time, the second sealing ring 20 works in conjunction with the first sealing ring 14. The first sealing ring 14 is responsible for the opening and closing sealing of the square hole 11, while the second sealing ring 20 is responsible for the static sealing of the threaded connection. The two have a clear division of labor and work together to ensure the integrity of the gas channel during the entire inflation process, avoiding leakage that could lead to insufficient inflation or unexpected deflation.

[0041] With the application of the second sealing ring 20, this inflation device can more stably complete inflation and deflation operations in medical environments, reducing repetitive operations or equipment adjustments caused by leakage, and improving the efficiency and safety of medical operations. It is especially suitable for applications requiring airtightness.

[0042] Example 5:

[0043] In this embodiment, the air bladder 1 is fixedly equipped with an air intake one-way valve 3. The air bladder 1 is fixedly connected to a three-way regulating valve 4, which is fixedly connected to a hose 5. The hose 5 is fixedly connected to a connector 6, which is made of polycarbonate. The valve assembly 2 includes a screw tube 7, a fixing member 8, and a sealing assembly 9. The connector 6 is sealed to the screw tube 7 via a threaded section 10. The screw tube 7 is fixedly connected to the fixing member 8. The fixing member 8 has a square hole 11, which is sealed to the sealing assembly 9. The sealing assembly 9 includes a pressing block 12, a spring 13, and a first sealing ring 14. The pressing block 12 is elastically connected to the fixing member 8 via the spring 13. The pressing block 12 has a connecting rod 15, which is fixedly connected to the first sealing ring 14. During the inflation operation, the operator first tightens the connector 6 to the screw tube 7 of the valve assembly 2 via a threaded connection to achieve a sealed connection between the connector 6 and the valve assembly 2. When connector 6 is fully screwed into the screw tube 7, the front end of connector 6 pushes the pressing block 12 in the sealing assembly 9. The pressing block 12, under pressure, compresses the spring 13, simultaneously causing the connecting rod 15 to move downwards. The first sealing ring 14, fixedly connected to the end of the connecting rod 15, moves accordingly, thereby opening the square hole 11 on the fixing member 8. At this time, the airbag 1 is connected to the valve assembly 2 via the hose 5, the three-way regulating valve 4, and connector 6, forming a complete airflow channel. The operator then repeatedly presses the airbag 1, and air enters the airbag 1 through the one-way inlet valve 3, then passes through the three-way regulating valve 4, the hose 5, and connector 6, finally filling the medical airbag through the opened square hole 11. The one-way inlet valve 3 prevents reverse airflow, ensuring unidirectional inflation. After the medical airbag is inflated to the required pressure or volume, the operator unscrews connector 6 from the screw tube 7, disconnecting the airbag 1 from the valve assembly 2. During the unscrewing of connector 6, since connector 6 no longer applies pressure to pressing block 12, spring 13 returns to its original state, pushing pressing block 12 and connecting rod 15 back to their original positions. First sealing ring 14 re-seals square hole 11, preventing gas leakage from inside the medical airbag. This embodiment achieves good mechanical strength and sealing performance by using connector 6 made of polycarbonate. Polycarbonate material has high impact resistance and dimensional stability, capable of withstanding repeated screwing operations without easily deforming or being damaged. Its smooth surface helps improve the sealing effect of the threaded connection, preventing gas leakage during inflation. The entire inflation process ensures a stable connection between airbag 1 and valve assembly 2 through a threaded connection, avoiding the potential puncture or damage to the medical airbag body that might occur with traditional needle-type connections, while also eliminating the safety hazard of needle puncture. This device has a reasonable structural design, is easy to operate, and has high inflation efficiency, making it suitable for airbag inflation needs in various medical scenarios.

[0044] This application provides another novel inflation device, which includes an air bladder 1 and a valve assembly 2. The air bladder 1 is fixedly equipped with an air intake one-way valve 3, and the air bladder 1 is fixedly connected to a three-way regulating valve 4. The three-way regulating valve 4 is fixedly connected to a hose 5, and the hose 5 is fixedly connected to a connector 6, which is made of stainless steel. The valve assembly 2 includes a screw tube 7, a fixing member 8, and a sealing assembly 9. The connector 6 is sealed to the screw tube 7 via a threaded section 10. The screw tube 7 is fixedly connected to the fixing member 8. The fixing member 8 has a square hole 11, which is sealed to the sealing assembly 9. The sealing assembly 9 includes a pressing block 12, a spring 13, and a first sealing ring 14. The pressing block 12 is elastically connected to the fixing member 8 via the spring 13. The pressing block 12 has a connecting rod 15, which is fixedly connected to the first sealing ring 14. During inflation, the operator tightens the stainless steel connector 6 to the threaded tube 7 of the valve assembly 2 using the threaded connection. Due to the high strength and corrosion resistance of stainless steel, connector 6 can withstand a large tightening torque, ensuring the sealing and reliability of the connection. When connector 6 is fully screwed in, its front end contacts and pushes the pressing block 12 of the sealing assembly 9. Under the thrust, the pressing block 12 compresses the spring 13, causing the connecting rod 15 to move downwards. The first sealing ring 14 at the end of the connecting rod 15 then displaces, opening the square hole 11 on the fixing component 8. At this time, the airbag 1 is connected to the inside of the valve assembly 2 through the hose 5, the three-way regulating valve 4, and connector 6, forming an inflation passage. The operator repeatedly presses the airbag 1, utilizing the one-way conduction characteristic of the air intake one-way valve 3 to force air into the medical airbag. After inflation, the operator unscrews connector 6, disengaging connector 6 from the pressing block 12. The spring 13 pushes the pressing block 12 and the connecting rod 15 back to their original positions, and the first sealing ring 14 re-closes the square hole 11.

[0045] Example 6:

[0046] In this embodiment, the air inflator 1 is fixedly installed with an air intake one-way valve 3. The air inflator 1 is fixedly connected to a three-way regulating valve 4. The three-way regulating valve 4 is fixedly connected to a hose 5. The hose 5 is fixedly connected to a connector 6. The valve assembly 2 includes a screw tube 7, a fixing member 8, and a sealing assembly 9. The connector 6 is sealed to the screw tube 7 through a threaded section 10. The screw tube 7 is fixedly connected to the fixing member 8. The fixing member 8 has a square hole 11, which is sealed to the sealing assembly 9. The sealing assembly 9 includes a pressing block 12, a spring 13, and a first sealing ring 14. The pressing block 12 is elastically connected to the fixing member 8 through the spring 13. The pressing block 12 has a connecting rod 15, which is fixedly connected to the first sealing ring 14. The connecting rod 15 has a screw hole 21, and the connecting rod 15 is fixedly connected to the first sealing ring 14 through a bolt 22, ensuring that the first sealing ring 14 is fixed on the connecting rod 15.

[0047] During the inflation process, the operator first screws the connector 6 and the threaded tube 7 together through the threaded section 10 to form a sealed connection between the connector 6 and the valve assembly 2. As the connector 6 is screwed in, it pushes the pressing block 12. The pressing block 12 is subjected to the axial pressure of the connector 6, compressing the spring 13 and causing the connecting rod 15 to move axially. The movement of the connecting rod 15 causes the first sealing ring 14 to move accordingly, thereby opening the square hole 11 on the fixing member 8. At this time, the air bladder 1 is inflated through the hose 5, the three-way regulating valve 4, and the connector 6. The valve assembly 2 is internally connected. By repeatedly pressing the airbag 1, in conjunction with the one-way air inlet valve 3, airflow is unidirectionally injected into the medical airbag to complete the inflation process. After inflation, the operator unscrews the connector 6 from the screw tube 7 to separate the airbag 1 from the valve assembly 2. After the connector 6 is removed, the pressing block 12 returns to its initial position under the elastic restoring force of the spring 13, driving the connecting rod 15 and the first sealing ring 14 to reset. The first sealing ring 14 re-seals the square hole 11 to prevent gas leakage inside the medical airbag.

[0048] During the deflation operation, the operator directly presses the pressing block 12. The pressing block 12 is subjected to external pressure, which compresses the spring 13 and drives the connecting rod 15 to move axially. The movement of the connecting rod 15 causes the first sealing ring 14 to move, thereby opening the square hole 11 on the fixing member 8. The gas inside the medical airbag is quickly discharged through the square hole 11, completing the deflation operation. After releasing the pressing block 12, the pressing block 12 returns to its initial position under the elastic restoring force of the spring 13, driving the connecting rod 15 and the first sealing ring 14 to reset. The first sealing ring 14 reseals the square hole 11.

[0049] The connecting rod 15 is provided with a screw hole 21. The connecting rod 15 is fixedly connected to the first sealing ring 14 by a bolt 22. The bolt 22 passes through the screw hole 21 and is screwed into the corresponding threaded hole on the first sealing ring 14 to form a mechanical fixed connection. This ensures that the first sealing ring 14 is firmly installed on the connecting rod 15, preventing the first sealing ring 14 from loosening or falling off due to airflow pressure or mechanical movement during inflation or deflation. This ensures the reliability and stability of the sealing assembly 9. The bolt 22 connection method facilitates the disassembly and replacement of the first sealing ring 14, improving the convenience of maintenance.

[0050] This embodiment achieves a sealed connection between the airbag 1 and the valve assembly 2 through a threaded connection structure, avoiding the safety hazards of damage to the medical airbag body and puncture wounds that may be caused by needle-type connections, thus improving the safety and reliability of operation. At the same time, the first sealing ring 14 is fixed by bolt 22, which enhances the structural stability of the sealing assembly 9 and ensures the smooth operation of the inflation and deflation process.

[0051] Example 7:

[0052] The inflation device in this embodiment consists of an airbag 1 and a valve assembly 2. The valve assembly 2 is sealed to the medical airbag. The valve assembly 2 includes a screw tube 7, a fixing member 8, and a sealing assembly 9. The sealing assembly 9 includes a pressing block 12, a spring 13, and a first sealing ring 14. The airbag 1 is fixedly connected to a three-way regulating valve 4. The three-way regulating valve 4 is fixedly connected to a hose 5. The hose 5 is fixedly connected to a connector 6. The valve assembly 2 is installed on the medical airbag. The operation steps include S1 to S5.

[0053] In step S1, the connector 6 and the screw tube 7 of the valve assembly 2 are sealed together by a threaded structure. As the connector 6 is screwed into the screw tube 7, it pushes the pressing block 12 to move inward. The pressing block 12 drives the connecting rod 15 to move. The movement of the connecting rod 15 overcomes the elastic force of the spring 13, causing the first sealing ring 14 to move away from the square hole 11, thereby opening the square hole 11. At this time, the airbag 1 forms a communication channel with the inside of the medical airbag through the hose 5, connector 6 and valve assembly 2, and gas can flow from the airbag 1 to the medical airbag. This step ensures that the device is firmly connected and sealed before inflation to avoid gas leakage. At the same time, the square hole 11 is automatically opened through mechanical linkage, simplifying the operation process.

[0054] In step S2, a medical balloon is placed at the patient's surgical site. The medical balloon adapts to the anatomical structure of the surgical area through its flexible material and preset shape, providing support or expansion, such as for joint expansion in orthopedic surgery or for urethral support in urological surgery. When placing the balloon, ensure that the position is accurate to avoid unnecessary pressure or damage to surrounding tissues. This step emphasizes the importance of balloon positioning and lays the foundation for subsequent inflation operations.

[0055] In step S3, the airbag 1 is manually and repeatedly squeezed. The gas inside the airbag 1 flows to the connector 6 through the hose 5 and the three-way regulating valve 4. After the gas enters the valve assembly 2, due to the action of the one-way valve, the gas can only flow into the medical airbag in one direction to prevent backflow. The gas fills the inside of the medical airbag through the open square hole 11, causing the medical airbag to gradually expand to the predetermined volume, such as providing stable support or expanding cavities during surgery. The operator controls the inflation volume by observing the degree of inflation of the airbag or using auxiliary measuring tools to ensure that the airbag does not over-inflate and cause tissue damage. This step utilizes manual operation and one-way valve design to achieve a controllable and safe inflation process.

[0056] In step S4, after the inflation operation is completed, the connector 6 is detached from the screw tube 7 of the valve assembly 2. By rotating the connector 6 in the reverse direction, it is separated from the screw tube 7. When the connector 6 is removed, the pressing block 12 is reset under the elastic force of the spring 13, which drives the connecting rod 15 to move, so that the first sealing ring 14 re-closes the square hole 11, thereby cutting off the connection between the airbag 1 and the medical airbag. The medical airbag remains inflated and independent of the inflation device. This step ensures that the airbag is stably inflated during the operation and avoids accidental deflation.

[0057] In step S5, after the surgical procedure is completed, the pressing element on the manual pressing valve assembly 2 pushes the pressing block 12 inward, which drives the connecting rod 15 to move, overcoming the elastic force of the spring 13, so that the first sealing ring 14 opens the square hole 11 again, and the gas inside the medical airbag is quickly discharged through the square hole 11. The airbag contracts, making it easy to remove from the patient's body or surgical site. This deflation operation is simple and quick, reducing patient discomfort and surgical time. After completion, the medical airbag is removed.

[0058] This embodiment improves the sealing and reliability of inflation and deflation operations through threaded connection and mechanical linkage mechanism, avoiding damage or safety hazards caused by traditional needle connection, and is suitable for a variety of medical scenarios.

[0059] Example 8:

[0060] In step S3 of this embodiment, the gas inside the medical airbag is expelled and its volume is finely adjusted by rotating knob 19. This embodiment describes in detail how the knob 19 structure is used for precise volume control during inflation, ensuring that the medical airbag achieves the required degree of inflation and pressure level in clinical applications, while improving the safety and convenience of operation.

[0061] First, in step S1, the operator seals the connector 6 to the threaded tube 7 of the valve assembly 2. As the connector 6 is screwed into the threaded tube 7, its end pushes the pressing block 12. The pressing block 12, through the connecting rod 15, moves the first sealing ring 14, thereby opening the square hole 11. This action creates a communication channel between the inflator 1 and the medical airbag, preparing for subsequent inflation. The entire connection process relies on the precise fit of the threaded structure to ensure airtightness, prevent gas leakage, and avoid damage to the medical airbag body, solving the problems of traditional needle-type connections that easily damage the airbag and pose a risk of puncture wounds.

[0062] In step S2, a medical balloon is placed at the patient's surgical site, for example, to temporarily occlude blood vessels in interventional vascular procedures, or to provide support and isolation in orthopedic surgery. Accurate balloon positioning is crucial to avoid unnecessary pressure on surrounding tissues or interference with the surgical process. The medical balloon is initially deflated or partially inflated for easy insertion and position adjustment.

[0063] Step S3 is the core operational phase. The operator manually squeezes the inflator bladder 1. Through repeated squeezing, gas enters the valve assembly 2 via a one-way valve inside the inflator bladder 1. The one-way valve prevents gas backflow, ensuring unidirectional airflow into the medical inflator bladder. During this process, gas fills the medical inflator bladder through the open square hole 11, causing it to gradually inflate. During inflation, the operator needs to monitor the bladder's volume and pressure, typically through visual observation or an auxiliary pressure sensor. When the bladder inflates to a certain volume, such as reaching a predetermined diameter in vascular occlusion applications or the required rigidity in support applications, the operation is paused to assess the effect.

[0064] Further operation of S3 involves the use of knob 19. Knob 19 is typically integrated into valve assembly 2 or connector 6 and adjusts the internal mechanism through rotation. Specifically, rotating knob 19 drives a fine-tuning mechanism, such as through a threaded pair or cam structure, to control the opening degree of square hole 11. When knob 19 is rotated clockwise, square hole 11 gradually narrows, restricting gas outflow and thus slowing down the deflation rate; when rotated counterclockwise, square hole 11 widens, accelerating gas expulsion. This design allows the operator to perform fine volume adjustments, such as slightly counter-rotating knob 19 in case of overinflation to expel a small amount of gas and reduce the balloon volume to the ideal state. During fine-tuning, gas is expelled from square hole 11 and escapes through the exhaust channel of valve assembly 2. The operator can adjust in real time through tactile or visual feedback to ensure that the balloon volume matches the surgical needs. For example, in microvascular surgery, it may be necessary to adjust the balloon volume to millimeter-level precision to avoid excessive tissue compression. The rotation angle of knob 19 is proportional to the amount of air released, providing predictable control and enhancing the accuracy and safety of operation.

[0065] After completing step S3, proceed to step S4, where the operator disassembles connector 6 from the screw tube 7. During disassembly, connector 6 is rotated in the opposite direction to gradually pull it out of the screw tube 7. During this process, pressing block 12 resets under the action of spring 13, causing the first sealing ring 14 to close the square hole 11, ensuring the medical balloon remains sealed and preventing accidental gas leakage. This step ensures the stability of the balloon during surgery and avoids interference with surgical procedures due to residual connecting parts.

[0066] Finally, in step S5, after the surgical procedure is completed, the operator directly presses the button on the valve assembly 2 to drive the linkage 15 mechanism, reopening the square hole 11 to quickly expel the air from inside the medical airbag. After expelling the air, the airbag contracts, facilitating its removal from the patient and reducing the risk of friction and injury during removal. This entire embodiment emphasizes the crucial role of the knob 19 in fine-tuning, achieving reliable gas control through a mechanical structure, thus improving the efficiency and safety of the medical procedure.

[0067] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0068] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A new type of inflator device comprising a gas bag and a valve assembly, the gas bag is fixedly installed with an air inlet one-way valve, characterized in that, The air bladder is fixedly connected to a three-way regulating valve, which is fixedly connected to a hose. The hose is fixedly connected to a connector. The valve assembly includes a threaded tube, a fixing component, and a sealing component. The connector is sealed to the threaded tube via a threaded section. The threaded tube is fixedly connected to the fixing component. The fixing component has a square hole, which is sealed to the sealing component. The sealing component includes a pressing block, a spring, and a first sealing ring. The pressing block is elastically connected to the fixing component via the spring. The pressing block has a connecting rod, which is fixedly connected to the first sealing ring.

2. A new inflator device according to claim 1, characterized in that, The three-way regulating valve is provided with a mounting base, the mounting base is provided with a through hole, a valve plate is fixedly installed in the mounting base, and a knob is movably installed in the mounting base.

3. A new inflator device according to claim 1, characterized in that, The connector is fixedly equipped with a second sealing ring.

4. A new inflator device according to claim 1, characterized by The connector is made of polycarbonate or stainless steel.

5. A new inflator device as claimed in claim 1, wherein, The connecting rod is provided with a screw hole, and the connecting rod is fixedly connected to the first sealing ring by bolts.

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