Boosting device and method for pushing fetal head in cesarean section

Abstract

The invention relates to the field of medical instruments, in particular to a boosting device and method for pushing a fetal head in a cesarean section. The device mainly comprises a push rod, a boosting component arranged at the top of the push rod and a pressurizing component arranged at the bottom of the push rod. The boosting component comprises a bowl-shaped boosting air bag and a deformation part capable of adjusting the diameter of the boosting air bag, and a pressure sensor is arranged on the contact surface of the air bag. The pressurizing component supplies air to the air bag through a pipeline and comprises a piston driving system and a linkage type displacement mechanism composed of a ratchet bar and a shifting piece. The device adapts to fetal heads of different sizes and shapes, large-area uniform contact is ensured, the pressure sensor monitors and displays thrust in real time, and the problems that cavities are generated due to poor contact in traditional operation, and fetal skull injuries or intracranial hemorrhage are easily caused by too large local pressure intensity are effectively solved. And the mechanical propelling mechanism converts the kneading action of a doctor into stable and progressive forward thrust, so that the controllability of the upward pushing process is realized, and the safety of an operation is remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of medical devices, specifically to a pushing device for pushing the fetal head upward during a cesarean section. Background Technology

[0002] Cesarean section is a crucial technique in obstetrics for ensuring maternal and infant safety. The delivery of the fetal head, especially in challenging situations such as a high-floating fetal head, hinges on the ability to safely and quickly deliver the head. Currently, the traditional manual fetal head-pushing method is widely used clinically. This involves an assistant applying downward force from above the fundus of the uterus on the mother's abdominal wall, working in conjunction with the surgeon to complete the delivery. However, this method has significant limitations. Its effectiveness is highly dependent on the assistant's experience and physical strength; the control of force is difficult to standardize. Insufficient force may lead to delivery failure, prolonging the operation and increasing the risk of fetal asphyxia; while excessive force or directional deviation may potentially cause uterine incision dehiscence, internal organ damage, or unnecessary mechanical stress on the fetal head. Despite these inherent drawbacks of manual manipulation, there has long been a lack of specialized instruments that can effectively replace this procedure.

[0003] It is worth noting that truly meaningful and widely adopted dedicated head-pushing devices for cesarean section are extremely rare in the market and in publicly available literature. Existing instrument solutions, such as the fetal head-pushing device with patent number CN219613995U, include an elastic element and a retractable, expandable pushing frame. The elastic element is located at the front end of the pushing frame, which includes a pushing rod, an adjusting rod, and an adjusting mechanism. The adjusting mechanism includes an adjusting block and a connecting rod. The adjusting rod is located at the front end of the pushing rod, and its bottom end is hinged to the edge of the adjusting block. The connecting rod is fixedly located below the adjusting block. This invention can solve the problem of the inconvenience of manually pushing the fetal head during vaginal delivery to cesarean section. However, it still has a fundamental common defect: it cannot achieve precise quantification and control of the pushing force. While the device provides a mechanical lever or support structure to transmit force, its design often focuses on providing a fulcrum or changing the direction of force application, but generally lacks an integrated force sensing and feedback system. This means that when using such devices, the operator, similar to manual operation, still relies primarily on subjective feel to estimate the magnitude of the applied force, unable to objectively know the specific value in real time. Therefore, it is difficult to ensure that each push is within an ideal range of force that is both effective and safe. This "blind" mechanical assistance, while potentially saving some physical effort, does not fundamentally solve the problem of precise force control. It may even apply excessive and potentially harmful force due to the leverage effect of the machinery, failing to substantially improve safety and failing to meet the high standards of controllability and safety required in clinical practice. Furthermore, because its elastic components cannot fully conform to the infant's head during pushing, there is a high probability of uneven force distribution or slippage on the infant's head, endangering the lives of both the infant and the mother. Summary of the Invention

[0004] The purpose of this invention is to overcome and solve the problems of uncontrollable force, limited contact area and lack of buffering mechanism in manual operation.

[0005] To achieve the above objectives, the technical approach adopted by the present invention to solve its technical problems is as follows: The adjustable head cover at the front of the device is connected to a sliding rod via a linkage mechanism. Rotating the knob drives the linkage to change the curvature and diameter of the silicone cover, adapting it to different tire head sizes, thereby achieving individualized shape matching and pressure distribution, and avoiding excessive local pressure.

[0006] The adjustable headgear integrates a flexible airbag, which is connected via tubing to a piston chamber inside the handle. When medical personnel squeeze the rear lever, they push the piston to compress the chamber, delivering a measured amount of gas into the airbag, causing it to expand in a controlled manner. This process converts the medical personnel's mechanical input into pneumatic output, and through the elastic deformation of the airbag, it achieves a gentle thrust on the fetal head.

[0007] The propulsion process is controlled by a mechanical linkage mechanism. A ratchet structure is located in the middle of the push rod, engaging with a gear lever. When the push rod is squeezed, the ratchet drives the gear to rotate, which in turn propels the main body of the device forward axially via a transmission mechanism. This design ensures synchronization between the airbag inflation thrust and the overall forward movement of the device, allowing the tire head to move smoothly and gradually upward.

[0008] To ensure operational safety, a built-in mechanical limiting structure is incorporated. The piston stroke is strictly limited by physical stops, thereby limiting the maximum gas delivery volume for each squeezing action. This design mechanistically constrains the upper limit of the airbag's expansion force, ensuring that the output thrust remains within a preset safety threshold, thus achieving passive force control protection.

[0009] To achieve the above objectives, the technical solution adopted by the present invention to solve its technical problem is as follows: Design a device to push the fetal head upward during a cesarean section, the specific scheme of which is as follows: A pushing device for pushing the fetal head during a cesarean section includes a push rod, characterized in that the top of the push rod is provided with a pushing component that acts on the fetal head, and the bottom of the push rod is provided with a pressurizing component. The booster components include: The booster airbag is used to wrap around the tire head. A pressure sensor is installed on the contact surface between the booster airbag and the tire head to detect the pressure on the tire head. The deformation section, located on the outer periphery of the booster airbag, is used to adjust the diameter of the booster airbag to accommodate tire heads of different sizes. The pressurization component is connected to the booster airbag via tubing and is used to change the inflation depth of the booster airbag by adjusting the inflation volume, thereby allowing the booster airbag to adapt to different tire head shapes.

[0010] Furthermore, the deformed part includes: The linkage transmission mechanism, located at the end of the push rod, consists of multiple sets of hinged linkages. The elastic cover is fitted onto the outside of the linkage transmission mechanism, with one end connected to the edge of the booster airbag. The linkage transmission mechanism causes the elastic cover to deform by extending and retracting the linkage, which in turn causes the booster airbag to increase or decrease in size.

[0011] Furthermore, the linkage transmission mechanism includes multiple sets of linkages, including support rods and spreading rods. The support rods have an X-shaped hinge structure, with their bottom movable end hinged to the end of the slide rod slidably mounted on the push rod, and their fixed end connected to the end of the push rod. The top of the support rod is slidably connected to the groove at the bottom of the expansion rod via a slider; The side of the support rod is fixedly connected to the inner wall of the elastic cover.

[0012] Furthermore, the slide rod is slidably sleeved on the end of the push rod, and the slide rod slides up and down along the push rod, thereby driving the linkage transmission mechanism to move.

[0013] Furthermore, the pressure sensor is wrapped with a medical-grade silicone pad and electrically connected to a display screen located at the bottom of the push rod.

[0014] Furthermore, the pressurizing component includes a handle, a pressurizing chamber disposed inside the handle, a piston drive assembly, and a linkage displacement mechanism; The piston drive assembly includes a piston and a rod for compressing gas in the pressurized chamber and delivering it to the booster airbag through pipelines; The linkage displacement mechanism includes a ratchet rack mounted on the push rod and a paddle hinged to the hand handle, used to convert the linear motion of the pinched lever into the progressive forward movement of the push rod.

[0015] Furthermore, the piston drive assembly also includes a return spring disposed between the pull rod and the hand handle; The paddle is equipped with a one-way damper to limit its one-way rotation and prevent the device from moving backward.

[0016] Furthermore, it also includes a sterile protective sleeve for covering the booster components and part of the pressurizing components, with an elastic tightening ring at one end of the sterile protective sleeve.

[0017] The beneficial effects of this invention are: 1. By combining a mechanically adjustable deformable part with an inflatable bowl-shaped booster bladder, this device can actively adapt to different fetal head circumferences and contours in both diameter and depth. This ensures a large-area, uniform, and close contact between the booster surface and the fetal head, fundamentally avoiding the problems of cavities caused by insufficient contact or excessive local pressure due to point-like forces. This significantly reduces the risk of fetal scalp abrasions, skull compression, or even intracranial hemorrhage that may occur during the procedure.

[0018] 2. The pressure sensor integrated into the airbag contact surface continuously and accurately detects the thrust applied to the fetal head and provides real-time feedback of the force value information to the doctor via the display screen. This function transforms the operation, which was originally based on experience and intuition, into visual and quantifiable data, providing the doctor with precise operational guidance. This allows the doctor to strictly control the thrust within a safe range, greatly improving the controllability and safety of the surgical procedure and avoiding iatrogenic injuries caused by uncontrolled thrust.

[0019] 3. The unique linkage displacement mechanism automatically converts the surgeon's pinching motion into a continuous, progressive linear forward movement of the device. Each pinch is simultaneously accompanied by two actions: the inflation of the airbag generating upward thrust and the locking of the mechanism, which then advances a short distance. Upon release, the device automatically resets and does not retract. This design organically combines flexible pneumatic thrust with rigid mechanical propulsion, making operation not only effortless and intuitive but also ensuring a smooth and controllable upward push, greatly improving the efficiency and reliability of surgical procedures. Attached Figure Description

[0020] Figure 1 This is a front view structural diagram of the present invention; Figure 2 This is a side view of the structure of the present invention; Figure 3 for Figure 2 Schematic diagram of part A in the middle; Figure 4 This is a top view of the structure of the present invention; Figure 5 This is a schematic diagram of the cross-sectional structure of the present invention; Figure 6 for Figure 5 Structural diagram of section B; Figure 7 for Figure 5 Schematic diagram of the structure of part C; Figure 8 This is a schematic diagram of the structure of the present invention without the elastic shield; Figure 9 This is a schematic diagram of the disassembled mechanism of the push rod, knob, and slide rod in this invention; Figure 10 This is a schematic diagram of the structure of the present invention from a bottom view; Figure 11This is a schematic diagram of the connecting rod structure of the present invention.

[0021] The above figures include the following reference numerals: 1. Adjustable headgear; 11. Boost airbag; 12. Deformation section; 13. Linkage mechanism; 131. Support rod; 132. Spreading rod; 14. Pressure sensor; 140. Display screen; 2. Push rod; 20. Air tube; 21. Slide rod; 22. Knob; 3. Hand handle; 31. Pressure chamber; 32. Piston; 33. Pull rod; 34. Return spring; 4. Ratchet; 41. Paddle. Detailed Implementation

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments, and not all embodiments.

[0023] In the description of this invention, it should be understood that the terms "front", "rear", "left", "right", "upper", "lower", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0024] refer to Figure 1-11 This invention provides a pushing device for pushing the fetal head upward during a cesarean section, comprising a pushing component and a pressurizing component, which are connected and work together through pipelines. The pushing component acts directly on the fetal head, undertaking the functions of fitting, fixing, and applying pushing force; the pressurizing component provides power to the pushing component and realizes precise movement control of the device. The two work together to complete the operation of pushing the fetal head upward.

[0025] In practice, the booster components mainly consist of an adjustable headgear 1 and a push rod 2.

[0026] The adjustable head cover 1 is made of medical-grade silicone material, which can ensure comfort when in contact with the fetal head and avoid abrasion or pressure damage to the fetal scalp, while also deforming within a certain range to adapt to the contours of different fetal heads.

[0027] The adjustable head cover 1 includes a bowl-shaped booster airbag 11 at its top and a deformable part 12 on the outside of the booster airbag. An elastic cover integrally formed with the edge of the booster airbag 11 is fitted over the deformable part 12. A linkage mechanism 13 is installed inside the elastic cover. The deformation of the linkage mechanism 13 causes the elastic cover to deform, simultaneously pulling the edge of the booster airbag 11 outwards, thus increasing the diameter of the booster airbag 11. Inflating the booster airbag 11 allows for changes in its depth, thus adapting to fetuses with different head shapes, especially suitable for fetuses that have been trapped in the pelvic cavity for a long time and whose heads may have already deformed.

[0028] A pressure sensor 14 is located at the center of the contact surface between the bowl-shaped propulsion airbag 11 and the infant's head. This pressure sensor 14 uses a high-precision miniature piezoresistive pressure sensing chip, which can accurately sense the thrust force on the fetal head in real time. The pressure sensor 14 is encapsulated with biocompatible medical-grade epoxy resin to ensure no adverse reactions when in contact with human tissue. To prevent the sensor from scratching the fetal head, it is wrapped with a layer of medical-grade silicone pad. The silicone pad has a smooth surface and a certain degree of elasticity, which can both provide cushioning protection and not affect the transmission of pressure signals. The display device is integrated into the bottom of the push rod 2 and uses a small OLED display screen 140 to display the thrust force value detected by the pressure sensor 14 in real time, allowing doctors to intuitively grasp the operating force.

[0029] The bottom of the booster airbag 11 is fixedly connected to the top of the push rod 2, and the connection is sealed with medical-grade adhesive to ensure no gas leakage. The booster airbag 11 has an internal gas chamber, which is connected to a pressurizing unit located at the bottom of the push rod via an air tube 20 located within the push rod 2. During use, the pressurizing unit inflates the gas chamber inside the booster airbag 11 to change its depth. The greater the inflation volume, the deeper the booster airbag 11, and the better the fit with the tire head.

[0030] The linkage mechanism consists of multiple sets of interconnected metal links, evenly distributed around the circumference of the booster airbag 11 to ensure force balance. Each set of links includes a support rod 131 and a spreading rod 132. The support rod 131 consists of two rods hinged at the middle to form an X-shaped structure. The spreading rod 132 has a groove at its bottom, and the tops of the two rods of the support rod 131 are slidably engaged with the groove by sliders, ensuring that the tops of the support rod 131 can slide smoothly along the groove. The bottoms of the two rods of the support rod 131 are respectively hinged to the end of the push rod 2 and the end of the slide rod 21 slidably mounted on the push rod 2, allowing the bottoms of the two rods of the support rod 131 to slide flexibly along the length of the spreading rod 132. The side of the spreading rod 132 is fixedly connected to the inner wall of the elastic cover, and the two ends of the spreading rod 132 are respectively connected to the edge of the booster airbag 11 and the bottom of the elastic cover, forming a linkage structure.

[0031] In specific operation, when the sliding rod 21 is pushed so that its end is close to the end of the push rod 2, the included angle between the two rods of the support rod 131 decreases, thereby pushing the expansion rod 132 upward, simultaneously causing the elastic cover to expand outward, and at the same time pulling the edge of the booster airbag 11 outward, thus increasing the diameter of the booster airbag 11; when the sliding rod 21 is pulled in the opposite direction so that its end is far from the end of the push rod 2, the included angle between the two rods of the support rod 131 increases, the expansion rod 132 contracts under the elastic action of the elastic cover itself, and the edge of the booster airbag 11 closes inward, reducing its diameter.

[0032] This adjustment mechanism allows the head cover to adapt to the size and curvature of different fetal heads, achieving a close fit whether it is a small premature infant's head or a large full-term infant's head. This effectively increases the contact area and evenly distributes the thrust to the surface of the fetal head, avoiding the risk of skull injury or intracranial hemorrhage caused by excessive local pressure. The pressure sensor 14 ensures that the point of force application of the fetal head is in close contact with the middle of the booster airbag 11, preventing the formation of cavities and excessive thrust that would affect the thrust transmission effect.

[0033] In specific implementation, a slide rod 21 is sleeved at the end of the push rod 2. The bottom of the slide rod 21 is rotatably connected to the knob 22. The knob 22 is threadedly connected to the push rod 2. By rotating the knob 22, the slide rod 21 is driven to slide up and down on the push rod 2, providing driving force for the deformation part 12.

[0034] The bottom of the push rod 2 is also equipped with a pressurizing component, which is responsible for providing stable air pressure thrust to the booster component and realizing the synchronous forward movement of the device. It mainly includes a hand handle, a pressurizing chamber, a piston drive assembly, a linkage displacement mechanism, a valve assembly, and a control unit.

[0035] In practice, the hand handle 3 is the gripping part of the doctor's operating device. It is located at the bottom of the push rod 2 and is integrally formed with the push rod 2. The hand handle 3 is made of high-strength medical plastic, which has sufficient structural strength to withstand various forces applied during operation. At the same time, it is lightweight and easy to operate flexibly.

[0036] The handle 3 is curved to match the natural curvature of the human hand. Its length and diameter have been determined through extensive ergonomic experiments, making it suitable for most adult hand shapes. The outer surface of the handle 3 is treated with a non-slip coating. By incorporating finely textured raised dots, the friction between the hand and the handle is increased, preventing the device from slipping due to sweaty hands or other reasons during surgical procedures, thus ensuring operational stability and safety.

[0037] The inside of the hand handle 3 is hollow, forming a space for installing core components such as the pressure chamber, piston, and gear shifter.

[0038] The pressurization chamber 31 is located at the front of the handle 3. The pressurization chamber 31 has a cylindrical chamber structure with smooth inner walls to reduce friction when the piston moves within it and ensure smooth piston movement. One side of the pressurization chamber 31 has an opening, and the other side is connected to the air pipe 20 located inside the push rod 2. The volume of the pressurization chamber 31 has been designed and calculated to meet the gas volume required for the full inflation of the booster airbag 11.

[0039] The piston drive assembly consists of a piston 32, a pull rod 33, and a return spring 34. It is responsible for converting the mechanical energy applied by the doctor into the pressure energy of the gas, providing inflation power for the booster airbag 11. The outer diameter of the piston 32 matches the inner diameter of the pressurization chamber 31, and it is slidably mounted at the opening end of the pressurization chamber 31. A lip-shaped sealing ring is provided around the edge of the piston 32. The sealing ring is made of a highly elastic material, which can tightly fit against the inner wall of the pressurization chamber 31 during piston movement, ensuring a good sealing effect and preventing gas leakage.

[0040] The pull rod 33 is a T-shaped rod structure, located above the handle 3, and is made of high-strength medical-grade stainless steel. The bottom of the vertical rod of the pull rod 33 is fixedly connected to the center of the piston 32; the crossbar has a through hole in the middle and is sleeved on the push rod 2. The pull rod 33 and the push rod 2 are keyed together, so that the pull rod 33 can only slide along the length of the push rod 2 and cannot rotate to affect the operation. The pull rod 33 and the handle 3 cooperate to form an operating end that can be gripped by the doctor.

[0041] A return spring 34 is provided between the two ends of the crossbar and the handle 3. When the doctor squeezes the lever 33 to move the piston 32 backward to compress the gas, the return spring 34 is compressed and stores elastic potential energy. When the doctor releases the push rod, the return spring 34 releases the elastic potential energy and pushes the piston 32 forward to reset, preparing for the next squeezing operation.

[0042] In practice, the booster mechanism consists of a ratchet 4 set on the outer wall of the push rod 2 and a paddle 41 installed on the outer side of the handle 3. Its function is to convert the linear motion of the doctor squeezing the lever 33 into the power for the push rod 2 to move forward, so as to achieve the synergistic effect of the flexible push of the booster airbag 11 and the rigid push of the push rod 2.

[0043] The ratchet 4 is a row of continuous teeth machined on the outer wall of the push rod 2. The tooth shape is designed to be unidirectional, that is, one side of the tooth surface is a vertical surface and the other side is an inclined surface. This design allows the paddle 41 to drive the device forward only when the push rod moves backward, and will not drive the device backward when the push rod returns to its original position.

[0044] The paddle 41 is mounted on the inner wall of the handle 3 via a rotating shaft, allowing it to rotate freely around the shaft. The teeth of the paddle 41 mesh with the teeth of the ratchet rack 4, and the shape of the paddle teeth matches the tooth profile of the ratchet rack 4, ensuring smooth meshing and transmission. A one-way damper, consisting of a ratchet and a pawl, is installed on the rotating shaft of the paddle 41. Its function is to restrict the paddle 41 to rotate freely in only one direction (i.e., the direction that drives the device forward), while generating a larger damping force when rotating in the opposite direction, thereby preventing the device from moving backward when the push rod 2 is reset.

[0045] When the doctor squeezes the push rod 2 backward, the ratchet 4 on the push rod 2 moves backward, causing the gear pawl 41 meshing with it to rotate clockwise around the rotation axis (viewed from the front of the device backward). The rotation of the gear pawl 41 is transmitted to the booster component through a set of linkage mechanisms, pushing the entire booster component forward a short distance. When the doctor releases the push rod 2, the push rod 2 and piston 32 return to their original positions under the action of the return spring 34. At this time, the ratchet 4 moves forward, causing the gear pawl 41 to rotate counterclockwise. However, due to the action of the one-way damper, the counterclockwise rotation of the gear pawl is hindered, and it cannot drive the device to move backward, thus realizing the one-way progressive forward movement of the device.

[0046] In practice, the control unit consists of a microprocessor, signal processing circuitry, and a power supply, all integrated inside the handgrip. The microprocessor is a low-power, high-performance medical-grade microcontroller capable of real-time processing and analysis of the pressure signals transmitted by the pressure sensing components.

[0047] The power supply uses a small rechargeable lithium battery to power the control unit and pressure sensing components; the battery capacity is sufficient for multiple surgical procedures. A charging port is provided on the handle 3 for easy recharging after use.

[0048] In practice, a sterile protective structure is used.

[0049] To meet the aseptic requirements of the surgery, the device is equipped with a dedicated sterile disposable sheath. The sheath is made of medical-grade polyethylene material, which is thin, transparent, flexible, non-toxic, and has good biocompatibility. The design of the sheath fully considers the structural characteristics of the device, and can completely cover all parts of the propulsion component that come into contact with the human body, as well as the front end of the hand handle 3 of the pressure component.

[0050] One end of the sheath is designed with an elastic tightening ring made of medical-grade rubber material, which has good elasticity and can be tightly fitted at the connection between the front end of the hand handle 3 and the pusher component to ensure a seal at this part and prevent bacteria from entering. The other end of the sheath is an open end. When in use, after completely wrapping the pusher component, the open end is tightened and fixed by a special fixing strap to further ensure the sterility effect.

[0051] The thickness of the diaphragm has been optimized to ensure sufficient strength without affecting the flexibility and operability of the device, or interfering with pressure transmission and sensor detection accuracy. The diaphragm is a single-use product and must be replaced after each surgery, avoiding the inconvenience of repeated sterilization of the device and reducing the risk of cross-infection.

[0052] The working process of this invention is as follows: During a cesarean section, when it is necessary to push the fetal head upward, the doctor first places a sterile disposable diaphragm over the front end of the device's pushing and pressurizing components, ensuring that the diaphragm is correctly installed and well-sealed. Then, based on the preoperative estimate of the fetal head size, the diameter of the adjustable head cover 1 is adjusted by rotating the knob 22 to move the slide bar 21, making it initially adaptable to the size of the fetal head.

[0053] Next, the doctor, holding the handle 3, gently inserts the booster into the mother's body, allowing the adjustable headgear 1 to slowly approach and wrap around the fetal head. During this process, the doctor can fine-tune the size of the headgear based on feedback from the pressure sensor 14 to ensure a tight fit between the adjustable headgear 1 and the fetal head. Then, the doctor begins to squeeze the operating end. When the lever 3 is squeezed, it moves the piston 32 backward, compressing the gas in the pressurization chamber 31. The gas enters the booster airbag 11 through the trachea 20 and the one-way valve, causing the booster airbag 11 to inflate and generate an upward force to lift the fetal head. Simultaneously, the ratchet 4 on the push rod 2 rotates the lever 41, pushing the booster forward a short distance, achieving a coordinated push and advance.

[0054] During the pushing process, the display screen 140 on the hand handle 3 shows the pressure in real time, and the doctor can appropriately reduce the squeezing force according to the prompts. When the doctor releases the lever 33, the piston 32 moves forward to reset under the action of the return spring 34. At this time, due to the action of the one-way damper, the paddle 41 cannot drive the device backward in the opposite direction, and the booster component remains in the current position.

[0055] The doctor repeatedly squeezes and releases lever 33, and the device gradually pushes the fetal head upward. During each squeeze, the maximum movement distance of piston 32 is limited by a mechanical stop inside the pressurization chamber 31 (the mechanical stop is a protruding structure fixedly installed on the inner wall of the pressurization chamber 31, which can prevent piston 32 from moving excessively backward), ensuring that the amount of gas injected into the airbag remains constant each time. This ensures that the maximum thrust is strictly controlled within a safe range, avoiding damage to the fetus due to uncontrolled operating force.

[0056] Finally, the doctor, holding the handle, slowly and steadily removes the entire device from the mother's body, completing the procedure of pushing the fetal head upward. After removal, the used sterile disposable sheath is peeled off the device and disposed of as medical waste. The main body of the device is cleaned and disinfected for future use (if it is a reusable model).

[0057] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A boosting device for pushing the fetal head in a caesarean section operation, comprising a pushing rod (2), characterized in that, The top of the push rod (2) is provided with a boosting component acting on the fetal head, and the bottom of the push rod (2) is provided with a pressurizing component; The boosting component comprises: A boosting air bag (11) for wrapping the fetal head, the boosting air bag (11) is provided with a pressure sensor (14) on the contact surface with the fetal head for detecting the pressure borne by the fetal head; A deformation part (12) is arranged on the outer periphery of the boosting air bag (11) for adjusting the diameter of the boosting air bag (11) to adapt to different sizes of the fetal head; The pressurizing component is connected with the boosting air bag (11) through a pipeline for changing the inflation depth of the boosting air bag (11) by adjusting the inflation amount of the boosting air bag (11), so that the boosting air bag (11) adapts to different shapes of the fetal head.

2. A booster device for pushing the fetal head upward during a cesarean section operation according to claim 1, wherein The deformation part (12) comprises: A connecting rod transmission mechanism (13) is arranged at the end of the push rod (2) and is composed of multiple groups of connecting rods hingedly connected with each other, A spring cover is sleeved outside the connecting rod transmission mechanism (13) and is connected with the edge of the boosting air bag (11) at one end; The connecting rod transmission mechanism (13) drives the spring cover to deform by unfolding and folding the connecting rods, and drives the boosting air bag (11) to increase or decrease.

3. A booster device for pushing the fetal head upward during a cesarean section operation according to claim 2, wherein The connecting rod transmission mechanism (13) comprises multiple groups of connecting rods including a support rod (131) and a spreading rod (132), the support rod (131) is an X-shaped hinged structure, the bottom movable end thereof is hingedly connected with the end of a sliding rod (21) slidingly arranged on the push rod (2), and the fixed end is connected with the end of the push rod (2); The top of the support rod (131) is slidingly connected with the sliding groove at the bottom of the spreading rod (132) through a sliding block; The side edge of the spreading rod (132) is fixedly connected with the inner wall of the spring cover.

4. A booster device for pushing the fetal head upward during a cesarean section operation according to claim 3, wherein The sliding rod (21) is slidingly sleeved at the end of the push rod (2), and slides up and down along the push rod (2) to drive the connecting rod transmission mechanism (13) to act.

5. The booster device for pushing the fetal head upward during cesarean section surgery according to claim 1, wherein The pressure sensor (14) is wrapped with a medical silica gel pad on the outside and is electrically connected with a display screen (140) arranged at the bottom of the push rod (2).

6. The booster device for pushing the fetal head upward during cesarean section surgery according to claim 1, wherein The pressurizing component comprises a hand-held handle (3), a pressurizing chamber (31) arranged in the hand-held handle (3), a piston driving assembly, and a linkage displacement mechanism; The piston driving assembly comprises a piston (32) and a pull rod (33) for compressing the gas in the pressurizing chamber (31) and delivering it to the boosting air bag (11) through a pipeline; The linkage displacement mechanism comprises a ratchet bar (4) arranged on the push rod (2) and a tab (41) hingedly connected with the hand-held handle (3) for converting the linear motion of the pull rod (33) into the progressive forward movement of the push rod (2).

7. A booster device for pushing the fetal head upward in a cesarean section operation according to claim 6, wherein The piston driving assembly further comprises a return spring (34) arranged between the pull rod (33) and the hand-held handle (3); The tab (41) is provided with a one-way damper for limiting its one-way rotation to prevent the device from retreating.

8. The booster device for pushing the fetal head upward in a cesarean section operation according to claim 1, wherein It also comprises a sterile protective sleeve film for covering the boosting component and part of the pressurizing component, one end of the sterile protective sleeve film is provided with an elastic tightening ring.

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