Obstetrical midwifery device

Abstract

The invention belongs to the technical field of medical instruments, and particularly discloses an obstetrical midwifery device which comprises a traction tube, a main suction cup head is fixedly arranged at the front end of the traction tube in a communicating mode, a left pull rod is fixedly arranged on the left side, close to the rear end, of the traction tube in a horizontally communicating mode, and a right pull rod is fixedly arranged on the right side, right facing the left pull rod, of the traction tube in a horizontally communicating mode. The left pull rod and the right pull rod are both of a hollow columnar structure, a self-locking speed control air pressure adjusting mechanism is arranged at the open end of the right pull rod, an arm-wearing type negative pressure tactile feedback mechanism is arranged on the upper side, close to the rear end, of the traction pipe, the rear end of the traction pipe is fixedly provided with a negative pressure main pipe in a communicated mode, and one end of the left pull rod is fixedly provided with an air pressure meter in a communicated mode. A safety valve is fixedly communicated with the lower side close to the rear end of the traction pipe. Negative pressure capable of being adjusted in real time according to actual conditions can be continuously provided, the negative pressure can be sensed at any time through the negative pressure feedback mechanism, real-time rapid adjustment can be achieved on the premise that traction is not affected by a single person according to feedback, and damage to newborns is reduced to the maximum extent.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and specifically refers to an obstetric midwifery device. Background Art

[0002] Childbirth is a natural process of human reproduction. In some cases, due to insufficient labor, abnormal birth canal, fetal distress and other reasons, natural childbirth may become difficult or even dangerous. At this time, medical intervention is needed to assist childbirth to ensure the safety of mother and baby. This is the necessity of midwifery. Common midwifery methods include: artificial rupture of membranes, use of oxytocin, forceps delivery, and vacuum extraction.

[0003] As a commonly used obstetric surgery, vacuum extraction is relatively simple to operate compared to other methods of delivery. The suction cup of vacuum extraction is usually made of soft materials such as silicone, which causes less damage to the birth canal and can reduce the risk of birth canal tearing and postpartum hemorrhage. Vacuum extraction is suitable for a variety of difficult births, such as malposition of the fetus, fetal distress, and maternal weakness. The traditional vacuum extraction device is mainly composed of a suction cup, a connecting tube, and a negative pressure device. The doctor places the sterilized suction cup on the head of the fetus and connects it to the negative pressure device through a connecting tube. The negative pressure device is activated to attach the suction cup to the head of the fetus. Then, based on the situation of uterine contractions and while ensuring safety, the doctor uses the pull rod and connecting tube to pull the suction cup to assist in the delivery of the fetus.

[0004] Despite the advantages of vacuum extraction, existing vacuum extraction devices and technologies still have some shortcomings: (1) Traditional vacuum extraction devices usually use fixed negative pressure. In actual operation, it is difficult to finely adjust the suction force according to the specific conditions of the mother and the fetus. If emergency release or adjustment of the suction force is required, the response speed is slow, delaying precious rescue time. At the same time, there will inevitably be amniotic fluid, blood and other liquids in the birth canal. These liquids may affect the sealing between the suction cup and the fetal head, causing the suction cup to fall off after leakage. The fixed negative pressure cannot be adjusted in time, and the suction can only be increased after it falls off, which wastes time; (2) Some vacuum extraction devices use closed vacuum to form negative pressure. If the suction cup falls off, it needs to be vacuumed again to form a specified negative pressure before it can continue to be used, which wastes time; (3) In order to solve the problems caused by closed negative pressure, some new vacuum extraction devices use continuous negative pressure devices with air inlets to continuously form negative pressure. However, due to structural reasons, the negative pressure stability of this type of device is poor, and it is difficult for medical staff to accurately perceive changes in air pressure. They cannot always be distracted to check the pressure gauge to make judgments, so they cannot adjust the negative pressure in time, which poses a safety hazard to the baby. (4) Existing vacuum cleaners usually require the cooperation of multiple people to operate, with one person responsible for holding the vacuum cleaner and pulling it, and another person responsible for the air pressure device. This multi-person operation method has problems such as poor communication and lack of tacit cooperation. Especially in emergency situations, it is difficult to make timely adjustments, which poses a safety risk. Summary of the invention

[0005] In view of the above situation, the present invention provides an obstetric delivery device, which can continuously provide negative pressure that can be adjusted in real time according to actual conditions, and can always sense the size of the negative pressure through a negative pressure feedback mechanism, and based on the feedback, a single person can make real-time and rapid adjustments without affecting traction, thereby minimizing damage to the newborn and achieving safer and more efficient vacuum extraction.

[0006] The technical solution adopted by the present invention is as follows: The present invention proposes an obstetric midwifery device, including a traction tube, a main suction cup head is fixedly provided at the front end of the traction tube, a left pull rod is horizontally connected and fixedly provided at the left side of the traction tube near the rear end, and a right pull rod is horizontally connected and fixedly provided at the right side of the traction tube opposite to the left pull rod, so as to facilitate the traction of the traction tube, the left pull rod and the right pull rod are both hollow columnar structures, and a self-locking speed-control air pressure regulating mechanism is provided at the open end of the right pull rod, an arm-worn negative pressure tactile feedback mechanism is provided at the upper side of the traction tube near the rear end, a negative pressure main pipe is fixedly provided at the rear end of the traction tube, which can actively provide continuous and stable negative pressure, an air pressure gauge is fixedly provided at one end of the left pull rod, which can display the air pressure inside the device in real time, and a safety valve is fixedly provided at the lower side of the traction tube near the rear end, which can automatically open to relieve pressure when the air pressure is too low.

[0007] Furthermore, the self-locking speed-controlled air pressure regulating mechanism includes a negative pressure regulating mechanism, an electromagnetic trigger mechanism and a magnetic self-locking mechanism. One end of the negative pressure regulating mechanism is tightly slidably arranged in the right pull rod, the electromagnetic trigger mechanism is arranged on the outside of the other end of the negative pressure regulating mechanism, and the magnetic self-locking mechanism is arranged at the intersection of the negative pressure regulating mechanism and the right pull rod.

[0008] Furthermore, the negative pressure regulating mechanism includes a fixed iron core and a limit groove, the fixed iron core is coaxially arranged on the outside of the right pull rod, and a sliding rod is vertically and symmetrically fixedly arranged on the edge of one end of the fixed iron core toward the right pull rod, the outer side surface of the sliding rod is tightly attached to the inner side of the right pull rod, and a fixing ring is fixedly arranged on the end of the sliding rod toward the right pull rod, and the fixing ring is tightly attached to the inner side of the right pull rod, and a limit head is symmetrically fixedly arranged on the outer side of the fixed ring, the limit groove is symmetrically opened on the inner surface of the right pull rod along the length direction, and the two ends of the limit groove are closed, and the limit head slides tightly in the limit groove to limit the travel range of the limit head and prevent the relative rotation of the sliding rod, and a depression is opened on the surface of one side of the fixed iron core, and the depression is open at the end facing away from the sliding rod.

[0009] Furthermore, the electromagnetic trigger mechanism includes a fixed cover, a T-shaped slider and a wire, one end of the fixed cover is fixedly sleeved on the outside of the fixed iron core, the other end of the fixed cover is fixedly provided with a battery, one side of the side wall of the fixed cover is provided with a press opening between the fixed iron core and the battery, the press opening faces the rear end of the traction tube and can quickly accommodate the passage of the thumb, a slide rail is vertically fixed inside the other side of the side wall of the fixed cover, the T-shaped slider is arranged in the fixed cover, one end of the middle vertical section of the T-shaped slider is tightly slidably arranged in the slide rail, a pre-stressed spring is tightly provided inside the slide rail, and both ends of the pre-stressed spring are respectively fixedly connected to the T-shaped slider and the slide rail, The wire is spirally wound around the outside of the fixed core between the fixed cover and the fixed core, one end of the wire is electrically connected to the battery, and the other end of the wire is fixed to one end of the fixed core after passing through the recess, and the fixed end of the wire, the inner side of the battery and both ends of the transverse section of the T-shaped slider are respectively fixed with wiring terminals, the transverse section length of the T-shaped slider is greater than the pressing hole length, so that the thumb will not touch the wiring terminals on the wire and the battery, and when the pre-stressing spring is reset, the wiring terminals on the T-shaped slider are respectively blocked by the wiring terminals on the wire and the battery at the same time, and when the pre-stressing spring is reset, the T-shaped slider is close to the pressing hole position, so that the thumb can quickly press the T-shaped slider.

[0010] Furthermore, the magnetic self-locking mechanism includes a sharp ridge and a slot, the sharp ridge is symmetrically fixed on the upper and lower sides of one of the sliding rods, the sharp ridges on each side are arranged in an array along the length direction of the sliding rod, the vertical surface of the sharp ridge faces the fixing ring, the inclined surface of the sharp ridge faces away from the fixing ring, the slot is symmetrically opened on the inner side of one end of the right pull rod, the slot is directly opposite to the sharp ridge, a clamping strip is tightly and slidingly provided in the slot, a pre-tensioning spring is provided in the slot, two ends of the pre-tensioning spring are respectively fixedly connected to the clamping strip and the right pull rod, the tip of the clamping strip faces the sharp ridge, the inclined surface of the tip of the clamping strip faces the fixing ring and is parallel to the inclined surface of the sharp ridge, and the vertical surface of the clamping strip faces away from the fixing ring.

[0011] Furthermore, the arm-worn negative pressure tactile feedback mechanism includes a negative pressure branch pipe, one end of the negative pressure branch pipe is connected and fixedly arranged on the upper side of the traction tube near the rear end, and the other end of the negative pressure branch pipe is connected and fixedly arranged with a secondary suction cup head. The negative pressure branch pipe is respectively fixedly provided with fixing straps on both sides near the secondary suction cup head, and the surfaces of the fixing straps are respectively provided with Velcro layers, which can be quickly fixed on the arm.

[0012] Furthermore, the inside of the wire and the wiring terminals are both made of conductive materials, the two wiring terminals on the T-shaped slider are electrically connected inside the T-shaped slider, and the remaining wiring terminals are electrically connected to the wire and the battery respectively.

[0013] Furthermore, the fixed iron core, the slide rod, the sharp ribs and the clamping strip are all made of soft magnetic materials. The soft magnetic materials have low coercive force and high magnetic permeability, can achieve a larger magnetization intensity under a smaller magnetic field and can be demagnetized quickly.

[0014] Furthermore, the negative pressure main pipe and the negative pressure branch pipe can be bent and the pipe diameters are not affected by the air pressure.

[0015] Furthermore, one of the slide bars is marked with an air pressure scale value, and the air pressure scale value corresponding to one end of the right pull rod on the slide bar is identical to the air pressure value of the barometer in real time, so that the air pressure can be accurately controlled and adjusted.

[0016] The beneficial effects achieved by the present invention using the above structure are as follows: (1) The medical staff separates the fingers of their right hand from the traction tube and grasps the left and right pull rods respectively. The right thumb is inserted into the button and the position of the slide rod is adjusted by swinging the thumb tip, thereby changing the size of the air intake space formed by the slide rod and the right pull rod, and then changing the air pressure inside the device to achieve real-time adjustment of the negative pressure of the device. The operation is more flexible and the adjustment is more timely, avoiding the adverse effects of fixed negative pressure. At the same time, the negative pressure is continuous and stable, avoiding the defects of the closed negative pressure extraction scheme.

[0017] (2) Under negative pressure, the main suction cup head will suck the baby's head, while the auxiliary suction cup head will suck the medical staff's arm, and the negative pressure of the two is the same. Therefore, the medical staff can always feel the change in pressure to evaluate the suction force of the main suction cup head on the baby's head. There is no need to always observe the changes in the barometer or require another person to monitor the air pressure. As a result, they can respond quickly and adjust the negative pressure, minimizing the adverse factors caused by operation delays. The medical staff's perception of air pressure can be empathized with the baby, so the operation will be more focused and precise, and the adjustment of air pressure will be more cautious.

[0018] (3) The medical staff inserts the thumb of his right hand into the button, disconnecting the closed circuit, eliminating the electromagnetic induction generated by the wire on the fixed iron core, eliminating the attraction of the sharp edge on the card strip, and causing the card strip to move away from the sharp edge under the tension of the pre-tension spring, so that the locking of the card strip on the sharp edge disappears. The medical staff takes out the thumb. At this time, after the T-shaped slider is reset, the electromagnetic induction of the wire on the fixed iron core is generated again, and then the card strip is attracted to contact with the sharp edge. Due to the position setting of the inclined surface and the vertical surface on the card strip and the sharp edge, the movement of the slide bar toward the right pull rod is restricted. In addition, due to the existence of negative pressure, the negative pressure always attracts the slide bar and the fixed cover toward the right pull rod, so that the slide bar will not move outward by itself, thereby realizing the self-locking of the slide bar. Through the above settings, the thumb can be taken out directly after each operation is completed, which not only frees the thumb, but also avoids the involuntary movement of the thumb in the button to affect the air pressure stability.

[0019] (4) This device is improved on the basis of the existing traditional pull rod structure, so it is more in line with the operating habits of medical staff. While controlling the left and right pull rods with one hand, the thumb can quickly reach into the button to adjust the air pressure, which is more in line with the hand's force. Therefore, it can not affect the traction action, thus realizing the function of personal traction, air pressure perception, and air pressure adjustment, and avoiding problems such as poor communication and lack of tacit cooperation among multiple people.

[0020] (5) Stick the auxiliary suction cup head to the inner side of the right arm, and close the open end of the main suction cup head with a tool. The change in the air intake space formed by the sliding rod and the right pull rod causes the pressure gauge to change. At the same time, the corresponding air pressure scale value on the sliding rod at one end of the right pull rod also changes. Check whether the two values ​​are the same after the air pressure stabilizes to detect whether the device is leaking. The detection process is simple and accurate, and can effectively avoid accidental leakage when the device is in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The present invention is a schematic diagram of the three-dimensional structure of an obstetric midwifery device.

[0022] Figure 2 The figure is a schematic diagram of the explosion structure of an obstetric midwifery device proposed by the present invention.

[0023] Figure 3 for Figure 2 Enlarged view of part A.

[0024] Figure 4 The present invention is a front view of an obstetric midwifery device.

[0025] Figure 5 for Figure 4 Enlarged view of part B.

[0026] Figure 6 This is a front view of an electromagnetic trigger mechanism of an obstetric midwifery device proposed by the present invention.

[0027] Figure 7 for Figure 6 Middle CC section view.

[0028] Figure 8 This is a structural schematic diagram of a negative pressure regulating mechanism of an obstetric midwifery device proposed by the present invention.

[0029] Fig. 9 This is a schematic structural diagram of a guide wire of an obstetric midwifery device proposed by the present invention.

[0030] Fig.10 This is a structural schematic diagram of the positional relationship between a T-shaped slider and a slide rail of an obstetric midwifery device proposed by the present invention.

[0031] Among them, 1. traction tube, 2. main suction cup head, 3. left pull rod, 4. right pull rod, 5. self-locking speed-controlled air pressure adjustment mechanism, 51. negative pressure adjustment mechanism, 511. fixed iron core, 512. slide rod, 513. depression, 514. fixed ring, 515. limit head, 516. limit groove, 52. electromagnetic trigger mechanism, 521. fixed cover, 522. button, 523. slide rail, 524. T-type slider, 525. terminal block, 526. preload spring, 527. battery, 528. wire, 53. magnetic self-locking mechanism, 531. sharp ridge, 532. card strip, 533. preload spring, 534. card slot, 6. arm-worn negative pressure tactile feedback mechanism, 61. negative pressure branch pipe, 62. auxiliary suction cup head, 63. fixed belt, 7. negative pressure main pipe, 8. air pressure gauge, 9. safety valve.

[0032] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0035] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10As shown, the present invention proposes an obstetric midwifery device, including a traction tube 1, a main suction cup head 2 is connected and fixed at the front end of the traction tube 1, a left pull rod 3 is horizontally connected and fixed at the left side of the traction tube 1 near the rear end, a right pull rod 4 is horizontally connected and fixed at the right side of the traction tube 1 opposite to the left pull rod 3, the left pull rod 3 and the right pull rod 4 are both hollow columnar structures, a self-locking speed-controlled air pressure regulating mechanism 5 is provided at the open end of the right pull rod 4, an arm-worn negative pressure tactile feedback mechanism 6 is provided on the upper side of the traction tube 1 near the rear end, and the rear end of the traction tube 1 A negative pressure main pipe 7 is fixedly provided at one end, an air pressure gauge 8 is fixedly provided at one end of the left pull rod 3, a safety valve 9 is fixedly provided at the lower side of the traction tube 1 near the rear end, and a self-locking speed-controlled air pressure regulating mechanism 5 comprises a negative pressure regulating mechanism 51, an electromagnetic trigger mechanism 52 and a magnetic self-locking mechanism 53. One end of the negative pressure regulating mechanism 51 is tightly slidably provided in the right pull rod 4, the electromagnetic trigger mechanism 52 is provided on the outside of the other end of the negative pressure regulating mechanism 51, and the magnetic self-locking mechanism 53 is provided at the intersection of the negative pressure regulating mechanism 51 and the right pull rod 4.

[0036] Among them, the negative pressure adjustment mechanism 51 includes a fixed iron core 511 and a limiting groove 516, the fixed iron core 511 is coaxially arranged on the outside of the right pull rod 4, and a sliding rod 512 is vertically and symmetrically fixed to the edge of one end of the fixed iron core 511 facing the right pull rod 4, and the outer side of the sliding rod 512 is tightly attached to the inner side of the right pull rod 4, and a fixing ring 514 is fixed to the end of the sliding rod 512 facing the right pull rod 4, and the fixing ring 514 is tightly attached to the inner side of the right pull rod 4, and a limiting head 515 is symmetrically fixed to the outer side of the fixed ring 514, and the limiting groove 516 is symmetrically opened on the inner surface of the right pull rod 4 along the length direction, and the two ends of the limiting groove 516 are closed, and the limiting head 515 slides tightly in the limiting groove 516, and a recess 513 is opened on the surface of one side of the fixed iron core 511, and the recess 513 is open at the end facing away from the sliding rod 512.

[0037] The electromagnetic trigger mechanism 52 includes a fixed cover 521, a T-shaped slider 524 and a wire 528. One end of the fixed cover 521 is fixedly sleeved on the outside of the fixed iron core 511, and a battery 527 is fixedly arranged inside the other end of the fixed cover 521. A pressing opening 522 is opened on one side of the side wall of the fixed cover 521 between the fixed iron core 511 and the battery 527. The pressing opening 522 faces the rear end of the traction tube 1. A slide rail 523 is vertically fixed inside the other side of the side wall of the fixed cover 521. The T-shaped slider 524 is arranged in the fixed cover 521. One end of the middle vertical section of the T-shaped slider 524 is tightly slidably arranged in the slide rail 523. A pre-compression spring 526 is tightly arranged inside the slide rail 523. The two ends of the pre-compression spring 526 are respectively connected to the T-shaped slider 524 and the slide rail 523. 3 is fixedly connected, the wire 528 is spirally wound around the outside of the fixed iron core 511 between the fixed cover 521 and the fixed iron core 511, one end of the wire 528 is electrically connected to the battery 527, and the other end of the wire 528 is fixed to one end of the fixed iron core 511 after passing through the recess 513, and the fixed end of the wire 528, the inner side of the battery 527 and the two ends of the transverse section of the T-shaped slider 524 are respectively fixed with wiring terminals 525, the transverse section length of the T-shaped slider 524 is greater than the length of the pressing opening 522, and when the pre-compression spring 526 is reset, the wiring terminals 525 on the T-shaped slider 524 are respectively blocked by the wiring terminals 525 on the wire 528 and the battery 527, and when the pre-compression spring 526 is reset, the T-shaped slider 524 is close to the pressing opening 522.

[0038] The magnetic self-locking mechanism 53 includes a sharp rib 531 and a slot 534. The sharp rib 531 is symmetrically fixed on the upper and lower sides of one of the slide bars 512. The sharp ribs 531 on each side are arranged in an array along the length direction of the slide bar 512. The vertical surface of the sharp rib 531 faces the fixing ring 514, and the inclined surface of the sharp rib 531 faces away from the fixing ring 514. The slot 534 is symmetrically opened on the inner side of one end of the right pull rod 4. The slot 534 faces the sharp rib 531. A clip strip 532 is tightly slidably arranged in the clip strip 534. A pre-tension spring 533 is arranged in the clip strip 534. The two ends of the pre-tension spring 533 are respectively connected to the clip strip 532. 2 is fixedly connected to the right pull rod 4, the tip of the clamping strip 532 faces the sharp ridge 531, the inclined surface of the tip of the clamping strip 532 faces the fixing ring 514 and is parallel to the inclined surface of the sharp ridge 531, and the vertical surface of the clamping strip 532 faces away from the fixing ring 514. The arm-worn negative pressure tactile feedback mechanism 6 includes a negative pressure branch pipe 61, one end of the negative pressure branch pipe 61 is connected and fixedly arranged on the upper side near the rear end of the traction tube 1, and the other end of the negative pressure branch pipe 61 is connected and fixedly arranged with an auxiliary suction cup head 62, and fixing belts 63 are respectively fixedly arranged on both sides of the negative pressure branch pipe 61 near the auxiliary suction cup head 62, and the surfaces of the fixing belts 63 are respectively provided with Velcro layers.

[0039] Among them, the inside of the wire 528 and the terminal 525 are both made of conductive materials, the two terminal 525 on the T-shaped slider 524 are electrically connected inside the T-shaped slider 524, and the remaining terminal 525 is electrically connected to the wire 528 and the battery 527 respectively, the fixed iron core 511, the slide bar 512, the sharp rib 531 and the clamping strip 532 are all made of soft magnetic materials, the negative pressure main pipe 7 and the negative pressure branch pipe 61 can be bent and the pipe diameter size is not affected by the air pressure, one of the slide bars 512 is marked with an air pressure scale value, and the air pressure scale value corresponding to one end of the right pull rod 4 on the slide bar 512 is the same as the air pressure value of the barometer 8 in real time.

[0040] When in use, the device needs to be tested first to check whether there is any leakage, etc. The medical staff separates the fingers of the right hand from the traction tube 1 and grasps the left pull rod 3 and the right pull rod 4 respectively, sticks the auxiliary suction cup head 62 to the inner side of the right arm, fixes the auxiliary suction cup head 62 on the arm through the fixing belt 63, closes the open end of the main suction cup head 2 with a tool, and then turns on the negative pressure device to drive the negative pressure main pipe 7 to draw air. At this time, the auxiliary suction cup head 62 will be adsorbed on the medical staff's arm, and the gas can only enter and be drawn out from the open space formed by the sliding rod 512 and the right pull rod 4. Due to the suction of the negative pressure device The amount of air entering the right pull rod 4 is greater than the amount of air entering the right pull rod 4, thereby forming air pressure inside the device. At this time, the barometer 8 will display the air pressure inside the device in real time. The thumb of the medical staff's right hand is inserted into the button 522 to push the T-shaped slider 524 to overcome the pressure of the preload spring 526 and move forward, thereby disconnecting the closed circuit previously formed by the wire 528, the terminal 525 on the wire 528, the two terminal 525 on the T-shaped slider 524, the terminal 525 of the battery 527, the battery 527 and the wire 528, so that the electromagnetic induction generated by the wire 528 on the fixed iron core 511 is eliminated. The fixed iron core 511, the slide bar 512 and the spike 531 are demagnetized, so that the attraction of the spike 531 to the clamping strip 532 disappears, and the clamping strip 532 moves away from the spike 531 under the pulling force of the pre-tension spring 533, so that the locking of the clamping strip 532 to the spike 531 disappears, so that the slide bar 512 can slide freely in the right pull rod 4, and then the movement of the thumb tip of the right hand can change the relative position of the slide bar 512 in the right pull rod 4. When the thumb controls the slide bar 512 to go deeper into the right pull rod 4, the open space formed by the slide bar 512 and the right pull rod 4 becomes smaller, and the air intake becomes smaller, resulting in The air pressure inside the device decreases, the barometer 8 changes, and at the same time, the corresponding air pressure scale value on the slide bar 512 at one end of the right pull rod 4 also changes. Check whether the two values ​​are the same after the air pressure stabilizes, and move the position of the slide bar 512 several more times to continue checking and comparing. When the values ​​are the same, it proves that there is no air leakage inside the device, which is the same as the initial working condition, and the detection is completed. If they are different, it means that there is an air leakage, because if there is an air leakage, there must be other air inlets, resulting in the air pressure value actually measured by the barometer 8 being different from the air pressure scale value preset on the slide bar 512.

[0041] After the detection is completed, the main suction cup head 2 is opened and aimed at the baby's head, the right thumb is pressed into the button 522, and the right hand clenched the left pull rod 3 and the right pull rod 4 to drive the main suction cup head 2 to the baby's head through the traction tube 1. Under negative pressure, the main suction cup head 2 will suck the baby's head, and at the same time, the auxiliary suction cup head 62 will suck the medical staff's arm, and the negative pressure of the two is the same, so the medical staff can always feel the change in pressure, so as to evaluate the suction force of the main suction cup head 2 on the baby's head, and there is no need to always observe the changes in the barometer 8 or require another person to monitor the air pressure. The air pressure can be adjusted to a reasonable range in real time by swinging the thumb tip. When the appropriate air pressure is reached, the medical staff removes the thumb. At this time, after the T-shaped slider 524 is reset, the electromagnetic induction of the wire 528 to the fixed iron core 511 is generated again, and then the card strip 532 is attracted to contact with the sharp ridge 531. The position setting of the inclined surface and the vertical surface on 532 and the sharp edge 531 makes it possible for the plane of the sharp edge 531 to be blocked by the plane of the clamping strip 532 when the slide bar 512 moves deep into the right pull rod 4, thereby limiting the movement of the slide bar 512 toward the right pull rod 4, and due to the existence of negative pressure, the negative pressure always attracts the slide bar 512 and the fixed cover 521 toward the right pull rod 4, so that the slide bar 512 will not move outward on its own, thereby achieving self-locking of the slide bar 512. Since the thumb is freed, the medical staff can hold the left pull rod 3 and the right pull rod 4 with their right hand to pull the traction tube 1 to pull the baby, while ensuring the stability of the air pressure. During the traction process, the arm always senses the change in suction and is ready to move the slide bar 512 again to adjust the negative pressure. If an accident occurs and the negative pressure in the device suddenly increases to a safety threshold and there is no time to adjust it, the safety valve 9 opens to release the negative pressure to avoid harm to the baby.

[0042] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0043] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

[0044] The present invention and its embodiments are described above, which is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention, they should all fall within the protection scope of the present invention.

Claims

1. An obstetric midwifery device, comprising a traction tube (1), characterized in that: The front end of the traction tube (1) is connected to and fixed with a main suction cup head (2); the left side of the traction tube (1) is horizontally connected to and fixed with a left pull rod (3); the right side of the traction tube (1) is horizontally connected to and fixed with a right pull rod (4); both the left pull rod (3) and the right pull rod (4) are hollow columnar structures; the open end of the right pull rod (4) is provided with a self-locking speed-controlled air pressure regulating mechanism (5); the upper side of the traction tube (1) is provided with an arm-worn negative pressure tactile feedback mechanism (6); the rear end of the traction tube (1) is connected to and fixed with a negative pressure main pipe (7); one end of the left pull rod (3) is connected to and fixed with a pressure gauge (8); and the lower side of the traction tube (1) is connected to and fixed with a safety valve (9); The self-locking speed-controlled air pressure regulating mechanism (5) comprises a negative pressure regulating mechanism (51), an electromagnetic trigger mechanism (52) and a magnetic self-locking mechanism (53); one end of the negative pressure regulating mechanism (51) is tightly slidably arranged inside the right pull rod (4); the electromagnetic trigger mechanism (52) is arranged outside the other end of the negative pressure regulating mechanism (51); and the magnetic self-locking mechanism (53) is arranged at the intersection of the negative pressure regulating mechanism (51) and the right pull rod (4).

2. An obstetrical delivery device according to claim 1, characterized in that: The negative pressure regulating mechanism (51) comprises a fixed iron core (511) and a limiting groove (516); the fixed iron core (511) is coaxially arranged on the outside of the right pull rod (4); a sliding rod (512) is vertically and symmetrically fixedly arranged on the edge of one end of the fixed iron core (511) facing the right pull rod (4); the outer side surface of the sliding rod (512) is tightly attached to the inner side of the right pull rod (4); a fixing ring (514) is fixedly arranged on the end of the sliding rod (512) facing the right pull rod (4); the fixing ring (514) Closely attached to the inner side of the right pull rod (4), a limit head (515) is symmetrically fixed on the outer side of the fixing ring (514), the limit groove (516) is symmetrically opened on the inner surface of the right pull rod (4) along the length direction, the two ends of the limit groove (516) are closed, the limit head (515) slides closely in the limit groove (516), and a depression (513) is opened on one side surface of the fixed iron core (511), and the depression (513) is open at the end facing away from the slide rod (512).

3. An obstetrical delivery device according to claim 2, characterized in that: The electromagnetic trigger mechanism (52) comprises a fixed cover (521), a T-shaped slider (524) and a wire (528); one end of the fixed cover (521) is fixedly sleeved on the outside of the fixed iron core (511); the other end of the fixed cover (521) has a battery (527) fixedly arranged inside; a pressing opening (522) is provided on one side of a side wall of the fixed cover (521) between the fixed iron core (511) and the battery (527); the pressing opening (522) faces Towards the rear end of the traction tube (1), a slide rail (523) is vertically fixed inside the other side of the side wall of the fixed cover (521), the T-shaped slider (524) is arranged in the fixed cover (521), one end of the middle vertical section of the T-shaped slider (524) is tightly slidably arranged in the slide rail (523), and a pre-compression spring (526) is tightly arranged inside the slide rail (523), and the two ends of the pre-compression spring (526) are respectively connected to the T-shaped slider (524) and the slide rail ( The battery (527) is fixedly connected to the battery (527) by a fixing cover (521), the wire (528) is spirally wound around the outside of the fixing core (511) between the fixing cover (521) and the fixing core (511), one end of the wire (528) is electrically connected to the battery (527), and the other end of the wire (528) is fixed to one end of the fixing core (511) after passing through the recess (513), and the fixing end of the wire (528), the inner side of the battery (527) and the two ends of the transverse section of the T-shaped slider (524) are respectively fixedly provided with connecting terminals (525), the transverse section length of the T-shaped slider (524) is greater than the length of the pressing opening (522), and when the pre-compression spring (526) is reset, the connecting terminals (525) on the T-shaped slider (524) are respectively blocked by the connecting terminals (525) on the wire (528) and the battery (527), and when the pre-compression spring (526) is reset, the T-shaped slider (524) is close to the pressing opening (522).

4. An obstetrical delivery device according to claim 3, characterized in that: The magnetic self-locking mechanism (53) comprises a sharp rib (531) and a slot (534), wherein the sharp rib (531) is symmetrically fixed on the upper and lower sides of one of the slide bars (512), and the sharp ribs (531) on each side are arranged in an array along the length direction of the slide bar (512), the vertical surface of the sharp rib (531) faces the fixing ring (514), and the inclined surface of the sharp rib (531) faces away from the fixing ring (514), and the slot (534) is symmetrically opened on the inner side of one end of the right pull rod (4), and the slot (534) is directly opposite to the sharp rib. A clamping strip (532) is provided in the clamping slot (534) so ​​as to slide tightly therewith. A pre-tensioning spring (533) is provided in the clamping slot (534). Two ends of the pre-tensioning spring (533) are respectively fixedly connected to the clamping strip (532) and the right pull rod (4). The tip of the clamping strip (532) faces the sharp rib (531). The inclined surface of the tip of the clamping strip (532) faces the fixing ring (514) and is parallel to the inclined surface of the sharp rib (531). The vertical surface of the clamping strip (532) faces away from the fixing ring (514).

5. An obstetrical delivery device according to claim 4, characterized in that: The arm-worn negative pressure tactile feedback mechanism (6) comprises a negative pressure branch pipe (61), one end of the negative pressure branch pipe (61) being connected and fixedly arranged on the upper side of the traction tube (1) near the rear end, the other end of the negative pressure branch pipe (61) being connected and fixedly arranged with an auxiliary suction cup head (62), and fixing belts (63) being respectively fixedly arranged on both sides of the negative pressure branch pipe (61) near the auxiliary suction cup head (62), and the surfaces of the fixing belts (63) being respectively provided with a hook and loop layer.

6. An obstetrical delivery device according to claim 5, characterized in that: The interior of the wire (528) and the wiring terminals (525) are both made of conductive materials; two wiring terminals (525) on the T-shaped slider (524) are electrically connected inside the T-shaped slider (524); and the remaining wiring terminals (525) are electrically connected to the wire (528) and the battery (527), respectively.

7. An obstetrical delivery device according to claim 6, characterized in that: The fixed iron core (511), the sliding rod (512), the sharp ridges (531) and the clamping strip (532) are all made of soft magnetic material.

8. An obstetrical delivery device according to claim 7, characterized in that: The negative pressure main pipe (7) and the negative pressure branch pipe (61) are bendable and the pipe diameters are not affected by air pressure.

9. An obstetrical delivery device according to claim 8, characterized in that: One of the slide bars (512) is marked with an air pressure scale value, and the air pressure scale value corresponding to one end of the right pull rod (4) on the slide bar (512) is identical to the air pressure value of the barometer (8) in real time.

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