Obstetric nursing membrane rupture assistive device with negative pressure balancing function

Abstract

This invention relates to the field of obstetric nursing technology, and in particular to an obstetric nursing device for ruptured membranes with a negative pressure balancing function. The device includes an insertion tube, an endoscope fixedly mounted on the upper rear end of the insertion tube, and a membrane rupture assembly located at the rear end of the insertion tube. The membrane rupture assembly includes a baffle plate fixed to the rear end of the insertion tube, with multiple guide membrane holes inside the baffle plate. A blade groove is formed on the rear end face of the baffle plate, and a membrane rupture blade is movably mounted inside the blade groove. The baffle plate of this invention effectively blocks the fetus inside the amniotic sac, allowing the soft outer wall of the amniotic sac to enter the guide membrane holes, thus preventing damage to the fetus during membrane rupture. Simultaneously, the membrane rupture blade is located inside the insertion tube, ensuring that neither the fetus nor the mother is harmed during membrane rupture.

Description

Technical Field

[0001] This invention relates to the field of obstetric nursing technology, and in particular to an obstetric nursing device for ruptured membranes with a function of balancing negative pressure. Background Technology

[0002] Artificial rupture of membranes (IPM), commonly referred to as induced rupture of membranes, is a tool or method used in obstetric care. It involves a doctor artificially tearing the amniotic sac into a small opening during an internal examination, allowing amniotic fluid to flow out. The main purpose of this procedure is to strengthen uterine contractions and thus accelerate labor.

[0003] Traditional artificial rupture of membranes involves a doctor or midwife using specific instruments, such as forceps or a special hook, to manually tear the amniotic sac during an internal examination, allowing the amniotic fluid to flow out. This method is relatively simple, but requires extensive experience and skill from the doctor or midwife to ensure safety and effectiveness. When using forceps to rupture the membranes, an internal examination of the cervix is ​​performed first to assess the condition of the amniotic sac. If the amniotic sac is found to be intact or delivery is obstructed, the doctor will gently place and clamp one side of the amniotic sac with the forceps, then carefully cut the sac to allow the amniotic fluid to flow out, thus facilitating the baby's birth.

[0004] In existing technical solutions, membrane rupture is mostly performed using membrane rupture forceps or special membrane rupture hooks. During internal examination, the amniotic membrane is artificially torn into a small opening to allow amniotic fluid to flow out. Although the use of membrane rupture forceps and membrane rupture hooks is relatively safe, there are still certain potential risks. During the operation, because the membrane rupture forceps and membrane rupture hooks can penetrate deep into the cervix, improper operation may cause damage to the fetus or the mother. Summary of the Invention

[0005] The purpose of this invention is to provide a ruptured membrane delivery device for obstetric care with a negative pressure balancing function. The baffle plate can block the fetus inside the amniotic sac, allowing the soft outer wall of the amniotic sac to enter the guiding membrane hole. Thus, during membrane rupture, the fetus inside the amniotic sac will not be damaged. At the same time, the ruptured membrane blade is located inside the insertion tube, so during membrane rupture, the ruptured membrane blade will not harm either the fetus or the mother, thereby solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a membrane rupture assisted delivery device for obstetric care with a negative pressure balancing function, comprising an insertion tube, an endoscope fixedly installed at the upper part of the inner rear end of the insertion tube, a membrane rupture assembly provided at the inner rear end of the insertion tube, the membrane rupture assembly including a baffle plate fixed at the inner rear end of the insertion tube, a guide membrane hole provided inside the baffle plate, the number of guide membrane holes being multiple, a blade groove provided on the rear end face of the baffle plate, and a membrane rupture blade movably installed inside the blade groove.

[0007] Preferably, a top bucket is fixedly installed at the rear end of the plug-in cylinder, and an expansion and extrusion assembly is provided together with the top bucket and the inner and outer sides of the plug-in cylinder. The expansion and extrusion assembly includes an electric heating wire embedded in the outer wall of the plug-in cylinder.

[0008] Preferably, the expansion and compression assembly further includes a compression bladder fixedly installed on the outer end face of the plug-in cylinder, and the inner end face of the compression bladder is fixedly connected to a pressure relief valve pipe that passes through the inside of the plug-in cylinder.

[0009] Preferably, a limiting bladder groove is formed inside the top bucket, and an expansion bladder is movably installed inside the limiting bladder groove. A connecting air tube runs through the inner wall of the top bucket, and the compression bladder is interconnected with the expansion bladder through the connecting air tube.

[0010] Preferably, a drainage negative pressure assembly is provided both inside the insert tube and at the bottom of the front end. The drainage negative pressure assembly includes a negative pressure drainage groove opened inside the insert tube, and the negative pressure drainage groove is interconnected with the compression bladder through a pressure relief valve pipe.

[0011] Preferably, the drainage negative pressure assembly further includes a drainage tube fixed to the front end of the bottom of the insertion tube, a control valve is fixedly installed in the middle of the drainage tube, a vacuum negative pressure bag is fixedly connected to the bottom end of the drainage tube, and the negative pressure drainage groove is interconnected with the vacuum negative pressure bag through the drainage tube.

[0012] Preferably, a film breaking auxiliary control component is provided in front of the film breaking component. The film breaking auxiliary control component includes a positioning ring frame fixedly installed in the inner wall of the insertion tube. A first insertion hole is opened in the middle of the positioning ring frame, and an auxiliary control rod is inserted into the inside of the first insertion hole.

[0013] Preferably, the rear end face of the positioning ring frame is provided with an assembly groove, and a lever is movably installed inside the assembly groove. The lever has an L-shaped structure and is fixedly connected to the outer wall of the auxiliary control rod.

[0014] Preferably, a positioning guide ring is slidably installed at the edge of the rear end face of the positioning ring frame, and a film-breaking knife seat is fixedly installed at the rear end face of the positioning guide ring. A second insertion hole matching the auxiliary control rod is opened at the middle position of the film-breaking knife seat, and a film-breaking guide groove is opened inside the film-breaking knife seat.

[0015] Preferably, a spring and a top bladder are fixedly installed inside the membrane breaking guide groove. The number of springs is three, and the top bladder is located between adjacent springs. An air guide tube that penetrates the inside of the insertion tube is fixedly installed inside the membrane breaking knife seat. The top bladder is interconnected with the squeezing bladder through the air guide tube.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The baffle plate in this invention can block the fetus inside the amniotic membrane, allowing the soft outer wall of the amniotic membrane to enter the guiding membrane opening. Therefore, during membrane rupture, the fetus inside the amniotic membrane will not be damaged. Simultaneously, the membrane rupture blade is located inside the insertion tube, ensuring that neither the fetus nor the mother will be harmed during membrane rupture. The baffle plate and membrane rupture blade fully consider the safety of both the fetus and the mother. The baffle plate blocks the fetus inside the amniotic membrane, preventing it from being affected by negative pressure suction; while the membrane rupture blade, located inside the insertion tube, avoids direct harm to the fetus and mother during the membrane rupture process.

[0018] 2. In this invention, the outer wall of the amniotic membrane protrudes into the negative pressure drainage channel through the guide membrane hole of the baffle plate. The negative pressure generated by the vacuum negative pressure bag can quickly act on the outer wall of the amniotic membrane, making it easier for the outer wall of the amniotic membrane to protrude into the negative pressure drainage channel through suction. This process accelerates the membrane rupture process and reduces the time and difficulty of manual operation by doctors. By adjusting the control valve, doctors can precisely control the negative pressure in the negative pressure drainage channel. This controllability allows doctors to adjust the negative pressure intensity as needed during the membrane rupture process, thereby more accurately controlling the membrane rupture process. At the same time, the body fluid collected by the vacuum negative pressure bag can facilitate medical staff to observe the amount of amniotic fluid discharged.

[0019] 3. This invention, through the insertion of the top cup and the expansion of the dilating bladder, ensures close contact with the amniotic membrane and compresses it. Simultaneously, the compression of the dilating bladder forces the soft amniotic membrane into the funnel-shaped top cup, providing support for further membrane rupture and negative pressure drainage. The combined expansion of the dilating and compression bladders provides auxiliary dilation of the pregnant woman's lower body. The expansion of both bladders provides a gentle yet sustained dilating force to the cervix, promoting cervical ripening and dilation. This is particularly important for pregnant women requiring induction of labor or planning delivery but with immature cervical conditions.

[0020] 4. In this invention, the amniotic sac expands itself, thereby overcoming the resistance of the spring and pushing the amniotic sac rupture blade in the rupture guide groove to move outward. This allows the rupture blade to cut the portion of the amniotic membrane wall that protrudes into the negative pressure drainage groove through the guide membrane hole of the baffle. At the same time, the contraction and expansion of the pregnant woman's lower body will squeeze the compression sac back and forth, and with the contraction of the spring, it can achieve a cyclic cutting effect on the amniotic membrane, thus achieving the purpose of rupture.

[0021] 5. The top of the auxiliary control rod of this invention abuts against the membrane-breaking blade, thereby enabling better cutting of the outer wall of the amniotic membrane. When the cutting effect is unsatisfactory, the auxiliary control rod can be further squeezed. The lever on the auxiliary control rod extends from inside the assembly slot. At this time, the operator rotates the auxiliary control rod, which drives the L-shaped lever to rotate as well. When the L-shaped lever rotates, it squeezes the membrane-breaking blade holder on one side, thus pushing the membrane-breaking blade holder to rotate as well, thereby driving the membrane-breaking blade on the membrane-breaking blade holder to rotate. This achieves rotational cutting of the portion of the amniotic membrane wall that protrudes into the negative pressure drainage groove through the guide membrane hole of the baffle, thereby further improving the membrane-breaking effect. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is an overall structural view of the present invention;

[0024] Figure 2 This is a schematic diagram of the outer end face structure of the plug-in cylinder of the present invention;

[0025] Figure 3 This is a schematic diagram of the internal structure of the plug-in cylinder of the present invention;

[0026] Figure 4 This is a schematic diagram of the internal top surface structure of the plug-in tube of the present invention;

[0027] Figure 5 This is a schematic diagram of the bottom structure of the top bucket of the present invention;

[0028] Figure 6 This is a schematic diagram of the internal cross-sectional structure of the top bucket of the present invention;

[0029] Figure 7 This is a schematic diagram of the membrane breaking component structure of the present invention;

[0030] Figure 8 For the present invention Figure 7 A magnified view of the structure at point A in the middle;

[0031] Figure 9 This is a schematic diagram of the structure where the top of the auxiliary control rod abuts against the membrane-breaking blade of the present invention.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Insert sleeve; 2. Expansion and compression assembly; 201. Compression bladder; 202. Connecting air tube; 203. Expansion bladder; 204. Limiting bladder groove; 205. Pressure relief valve tube; 206. Heating wire; 3. Top bucket; 4. Drainage negative pressure assembly; 401. Negative pressure drainage groove; 402. Drainage tube; 403. Control valve; 404. Vacuum negative pressure bag; 5. Membrane rupture auxiliary control assembly; 501. Auxiliary control rod; 50 2. Positioning ring holder; 503. Assembly slot; 504. Toggle lever; 505. First insertion hole; 6. Membrane breaking assembly; 601. Membrane breaking knife holder; 602. Membrane breaking blade; 603. Membrane breaking guide groove; 604. Spring; 605. Top bladder; 606. Air duct; 607. Baffle plate; 608. Guide membrane hole; 609. Knife groove; 610. Second insertion hole; 611. Positioning guide ring; 7. Endoscope. Detailed Implementation

[0034] The technical solutions of 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 of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] This invention provides a technical solution:

[0036] Please see Figures 1 to 4 A diaphragmatic rupture delivery device for obstetric care with a negative pressure balancing function includes an insertion tube 1. A top bucket 3 is fixedly installed at the rear end of the insertion tube 1. An expansion and compression assembly 2 is provided both inside and outside the top bucket 3 and the insertion tube 1. The expansion and compression assembly 2 includes an electric heating wire 206 embedded in the outer wall of the insertion tube 1. The expansion and compression assembly 2 also includes a compression bladder 201 fixedly installed on the outer end face of the insertion tube 1. A pressure relief valve pipe 205 passing through the inside of the insertion tube 1 is fixedly connected to the inner end face of the compression bladder 201. A limiting bladder groove 204 is opened inside the top bucket 3. An expansion bladder 203 is movably installed inside the limiting bladder groove 204. A connecting air tube 202 passes through the inner wall of the top bucket 3. The compression bladder 201 is interconnected with the expansion bladder 203 through the connecting air tube 202.

[0037] By adopting the above technical solution, the membrane rupture operation is usually performed during the interval between uterine contractions to reduce the impact on the fetus. The insertion tube 1 and the top tube 3 are inserted into the pregnant woman's lower body. During use, the device requires an external power source and an air pump. The external power source provides electricity to the heating wire 206, and the external air pump provides gas to the compression chamber 201. Before insertion, the heating wire 206 needs to be energized to preheat the insertion tube 1 itself and the air pumped into the compression chamber 201, ensuring that the device's temperature is the same as the pregnant woman's body temperature. The device will not irritate the pregnant woman during use. When air is pumped into the compression bladder 201, the air is guided to the expansion bladder 203 through the connecting air tube 202. When there is air in the expansion bladder 203, the expansion bladder 203 will expand, allowing it to extend out of the limiting bladder groove 204 of the top container 3. It should be noted that when the top container 3 is inserted into the lower body, it needs to be in close contact with the amnion in the pregnant woman's lower body. This ensures that the expansion bladder 203 can make close contact with the outer wall of the amnion when it expands. Therefore, the insertion of the top container 3 and the expansion of the expansion bladder 203 work together to achieve the desired effect. This ensures close contact with the amniotic membrane and compresses it. Simultaneously, the compression of the dilating bladder 203 forces the soft amniotic membrane into the funnel-shaped top hopper 3, providing support for further membrane rupture and negative pressure drainage. The combined expansion of the dilating bladder 203 and the compression bladder 201 provides auxiliary dilation to the pregnant woman's lower body. The expansion of both bladders provides a gentle yet sustained dilating force to the cervix, promoting cervical ripening and dilation. This is beneficial for pregnant women requiring induction of labor or planned delivery but with immature cervical conditions. This is especially important; the inflation of the balloon simulates the pressure of the fetal head on the soft birth canal, which conforms to the laws of natural childbirth. This simulation helps to encourage the mother to involuntarily make downward breathing movements, which is conducive to the delivery of the presenting part of the fetus. At the same time, the expansion of the balloon can also reduce the resistance of the presenting part of the fetus to descend, making the delivery process smoother. The expansion of the dilation balloon 203 and the compression balloon 201 can gradually dilate the soft birth canal, making the delivery process easier and reducing the mother's pain. The balloon-assisted delivery technique helps the fetus pass through the birth canal more quickly by dilating the soft birth canal, thereby shortening the labor process.

[0038] Specifically, such as Figure 1 , Figure 5 and Figure 7As shown, a negative pressure drainage assembly 4 is provided both inside the insert tube 1 and at its front bottom. The negative pressure drainage assembly 4 includes a negative pressure drainage channel 401 formed inside the insert tube 1. The negative pressure drainage channel 401 is interconnected with the compression bladder 201 through a pressure relief valve pipe 205. The negative pressure drainage assembly 4 also includes a drainage pipe 402 fixed to the front bottom of the insert tube 1. A control valve 403 is fixedly installed in the middle of the drainage pipe 402. A vacuum negative pressure bag 404 is fixedly connected to the bottom end of the drainage pipe 402. 401 is interconnected with the vacuum negative pressure bag 404 through the drainage tube 402; an endoscope 7 is fixedly installed on the upper part of the inner rear end of the insert tube 1, and a membrane breaking assembly 6 is provided at the inner rear end of the insert tube 1. The membrane breaking assembly 6 includes a baffle 607 fixed at the inner rear end of the insert tube 1. A guide membrane hole 608 is opened inside the baffle 607. The number of guide membrane holes 608 is set to multiple. A knife groove 609 is opened on the rear end face of the baffle 607. A membrane breaking blade 602 is movably installed inside the knife groove 609.

[0039] By adopting the above technical solution, during use, the vacuum negative pressure bag 404 is connected to the drainage tube 402, and the control valve 403 is opened. This allows the vacuum negative pressure bag 404 to create sufficient negative pressure within the negative pressure drainage channel 401. Since the top bucket 3 and the expanding bladder 203 are both in close contact with the outer wall of the amniotic membrane, the negative pressure inside the negative pressure drainage channel 401 further pulls on the outer wall of the amniotic membrane, allowing the outer wall of the amniotic membrane to protrude through the guide membrane hole 608 of the baffle plate 607 into the negative pressure drainage channel. In the drainage channel 401, the negative pressure generated by the vacuum bag 404 can quickly act on the outer wall of the amniotic membrane. Through suction, the outer wall of the amniotic membrane is more easily protruded into the negative pressure drainage channel 401. This process accelerates the membrane rupture and reduces the time and difficulty of manual operation by the doctor. By adjusting the control valve 403, the doctor can precisely control the negative pressure in the negative pressure drainage channel 401. This controllability allows the doctor to adjust the negative pressure intensity as needed during the membrane rupture process, thereby more accurately controlling the membrane rupture process. The design of the negative pressure drainage channel 401 and the vacuum bag 404 helps reduce the risk of contamination and infection during the operation. They can quickly remove contaminants such as blood and exudate from the surgical area, keeping the surgical area clean and sterile. At the same time, the body fluid collected by the vacuum bag 404 can be easily observed by medical staff to observe the amount and characteristics of amniotic fluid and facilitate testing. The baffle 607 can block the fetus inside the amniotic membrane, allowing the soft outer wall of the amniotic membrane to enter the guide membrane hole 608, thus facilitating the membrane rupture. During rupture, the fetus inside the amniotic sac will not be harmed. The rupture blade 602 is located inside the insertion tube 1, ensuring that it will not injure either the fetus or the mother. The baffle 607 and the rupture blade 602 are designed with the safety of both the fetus and the mother in mind. The baffle 607 blocks the fetus from the amniotic sac, preventing it from being affected by negative pressure suction. The rupture blade 602, located inside the insertion tube 1, avoids direct harm to the fetus and mother during rupture. When the negative pressure inside the negative pressure drainage channel 401 becomes too high, the pressure relief valve 205 can open, allowing gas from the compression bladder 201 to be introduced into the negative pressure drainage channel 401. This ensures the stability of the negative pressure inside the channel, guaranteeing a balanced negative pressure during use and preventing significant pressure fluctuations that could affect the mother's delivery.

[0040] Specifically, such as Figures 5 to 9As shown, a film breaking auxiliary control component 5 is provided in front of the film breaking component 6. The film breaking auxiliary control component 5 includes a positioning ring frame 502 fixedly installed in the inner wall of the insertion cylinder 1. A first insertion hole 505 is opened in the middle of the positioning ring frame 502, and an auxiliary control rod 501 is inserted inside the first insertion hole 505. An assembly groove 503 is opened on the rear end face of the positioning ring frame 502. A lever 504 is movably installed inside the assembly groove 503. The lever 504 has an L-shaped structure and is fixedly connected to the outer wall of the auxiliary control rod 501. A positioning guide ring 611 is slidably installed at the edge of the rear end face of the positioning ring frame 502. A film-breaking knife seat 601 is fixedly installed on the rear end face of the positioning guide ring 611. A second insertion hole 610 matching the auxiliary control rod 501 is opened in the middle position of the film-breaking knife seat 601. A film-breaking guide groove 603 is opened inside the film-breaking guide groove 603. A spring 604 and a top bladder 605 are fixedly installed inside the film-breaking guide groove 603. There are three springs 604. The top bladder 605 is located between adjacent springs 604. A duct 606 that penetrates the inside of the insertion tube 1 is fixedly installed inside the film-breaking knife seat 601. The top bladder 605 is connected to the compression bladder 201 through the duct 606.

[0041] By adopting the above technical solution, during use, the endoscope 7 can be used to observe the internal condition of the insertion tube 1. When the outer wall of the amniotic membrane is relatively thin, the gas inside the compression bladder 201 will enter the top bladder 605 through the air guide tube 606. When the top bladder 605 is filled with gas, the top bladder 605 itself expands, thereby overcoming the resistance of the spring 604 and pushing the membrane rupture blade 602 in the membrane rupture guide groove 603 to move outward. This pushes the membrane rupture blade 602 to protrude through the guide membrane hole 608 of the baffle plate 607 into the outer wall of the amniotic membrane. The amniotic membrane is partially cut in the negative pressure drainage channel 401. Simultaneously, the contraction and expansion of the pregnant woman's lower body squeezes the compression bladder 201 back and forth, and with the contraction of the spring 604, the amniotic membrane is cut in a cyclical manner, thus achieving the purpose of rupture. This method helps to ensure the thoroughness of rupture while reducing the force of a single cut, thereby reducing the impact on the pregnant woman and the fetus. Traditional artificial rupture methods may increase the risk of umbilical cord prolapse, while this device can reduce this risk by precisely cutting the outer wall of the amniotic membrane.

[0042] When the outer wall of the amniotic membrane is relatively thick, the auxiliary control rod 501 can be pushed. The auxiliary control rod 501 is squeezed and will perform telescopic movement in the first jack 505 of the positioning ring frame 502 and the second jack 610 of the membrane-breaking knife seat 601. When the auxiliary control rod 501 extends, it can squeeze the membrane-breaking blade 602 in the membrane-breaking knife seat 601 to further extend. The top of the auxiliary control rod 501 abuts against the membrane-breaking blade 602, so as to better cut the outer wall of the amniotic membrane. At the same time, when the cutting effect is not good, the auxiliary control rod 501 can be further squeezed. The dial rod 504 on the auxiliary control rod 501 extends out from the inside of the assembly groove 503. At this time, the operator rotates the auxiliary control rod 501, and the auxiliary control rod 501 can带动 the L-shaped dial rod 504 to rotate together. When the L-shaped dial rod 504 rotates, it will squeeze the membrane-breaking knife seat 601 on one side, so as to推动 the membrane-breaking knife seat 601 to rotate together, and then带动 the membrane-breaking blade 602 on the membrane-breaking knife seat 601 to rotate, so as to实现 the rotational cutting treatment of the partial wall membrane of the guiding membrane hole 608 penetrating the partition baffle 607 on the outer wall of the amniotic membrane into the negative pressure drainage groove 401, thereby further improving the membrane-breaking effect; it should be noted that the set membrane-breaking blade 602 can be a special structure, such as a cross-shaped structure or a丰字形 structure. When the membrane-breaking blade 602 rotates, the membrane-breaking blade 602 can实现 the transverse cutting of the outer wall of the amniotic membrane. The rotation angle of the membrane-breaking blade 602 is 0-45°. When the membrane-breaking blade 602 rotates forward and backward, the length of the air guide tube 606 can adapt to the rotational movement range of the membrane-breaking knife seat 601, so as to ensure the stable operation of the rotational cutting. When the membrane-breaking is completed, the membrane-breaking blade 602 on the membrane-breaking knife seat 601 can be rotated to the position of the knife groove 609 by rotation, so that the membrane-breaking blade 602 is卡入 into the knife groove 609 and collected.

[0043] It should be noted that there is an unclear "丰字形 structure" in the original text. It might be a misspelling or a very specialized term that is not commonly known. I've translated it as it is for the purpose of following the translation rules. If it's a known error, it may need to be corrected in the original text for a more accurate translation.Working Principle: When using this device, the membrane rupture operation is usually performed during the interval between uterine contractions to minimize impact on the fetus. The insertion tube 1 and the top tube 3 are inserted into the pregnant woman's lower body. During use, the device requires an external power source and an air pump. The external power source provides electricity to the heating wire 206, and the external air pump provides gas to the compression bladder 201. Before insertion, the heating wire 206 needs to be energized to preheat the insertion tube 1 itself and the air pumped into the compression bladder 201. When air is pumped into the compression bladder 201, the gas is guided to the expansion bladder 203 through the connecting air tube 202. When the expansion bladder 203... When there is gas in 3, the expanding sac 203 will expand, allowing it to extend out of the limiting sac groove 204 of the top sac 3. It should be noted that when the top sac 3 is inserted into the lower body, it needs to be in close contact with the amnion in the pregnant woman's lower body. This allows the expanding sac 203 to be in close contact with the outer wall of the amnion when it expands. Therefore, with the insertion of the top sac 3 and the expansion of the expanding sac 203, it can ensure close contact with the amnion and compress the amnion. At the same time, under the compression of the expanding sac 203, the soft part of the amnion can be squeezed into the funnel-shaped top sac 3, thus providing compression assistance for further rupture of the membrane and negative pressure drainage.

[0044] The vacuum negative pressure bag 404 is connected to the drainage tube 402, and the control valve 403 is opened. This allows the vacuum negative pressure bag 404 to create sufficient negative pressure within the negative pressure drainage channel 401. Since the top bucket 3 and the expanding bladder 203 are both in contact with the outer wall of the amniotic membrane, the negative pressure within the drainage channel 401 further pulls on the outer wall of the amniotic membrane, causing it to protrude through the guide membrane hole 608 of the baffle 607 into the negative pressure drainage channel 401. The baffle 607 acts as a barrier to the fetus inside the amniotic membrane, allowing the soft outer wall of the amniotic membrane to enter the guide membrane hole 608. This prevents damage to the fetus during membrane rupture. Simultaneously, the membrane rupture blade 602 is located inside the insertion tube 1. When the negative pressure inside the drainage channel 401 becomes too high, the pressure relief valve 205 opens, allowing the pressure inside the squeezing bladder 201 to be released. Gas is introduced into the negative pressure drainage channel 401 to ensure the stability of the negative pressure inside the negative pressure drainage channel 401. The endoscope 7 can observe the condition inside the insertion tube 1. When the outer wall of the amniotic membrane is relatively thin, the gas inside the compression bladder 201 will enter the top bladder 605 through the air guide tube 606. When the top bladder 605 is filled with gas, the top bladder 605 expands itself, thereby overcoming the resistance of the spring 604 and pushing the membrane rupture blade 602 in the membrane rupture guide channel 603 to move outward. This pushes the membrane rupture blade 602 to cut the part of the amniotic membrane wall that protrudes into the negative pressure drainage channel 401 through the guide membrane hole 608 of the baffle 607. At the same time, under the action of contraction and expansion of the pregnant woman's lower body, the compression bladder 201 will be squeezed back and forth, and with the contraction action of the spring 604, the amniotic membrane can be cut in a cyclic manner, thus achieving the purpose of membrane rupture.

[0045] When the outer wall of the amniotic membrane is relatively thick, the auxiliary control rod 501 can be pushed. The auxiliary control rod 501 is squeezed and will perform telescopic movement in the first jack 505 of the positioning ring frame 502 and the second jack 610 of the amniotic membrane rupture knife seat 601. When the auxiliary control rod 501 extends, it can squeeze the amniotic membrane rupture blade 602 in the amniotic membrane rupture knife seat 601 to further extend. The top end of the auxiliary control rod 501 abuts against the amniotic membrane rupture blade 602, so as to better cut the outer wall of the amniotic membrane. At the same time, when the cutting effect is not good, the auxiliary control rod 501 can be further squeezed. The lever 504 on the auxiliary control rod 501 extends out from the inside of the assembly groove 503. At this time, the operator rotates the auxiliary control rod 501, and the auxiliary control rod 501 can带动 the lever 504 with an L-shaped structure to rotate together. When the lever 504 with an L-shaped structure rotates, it will squeeze the amniotic membrane rupture knife seat 601 on one side, so as to推动 the amniotic membrane rupture knife seat 601 to rotate together, and then带动 the amniotic membrane rupture blade 602 on the amniotic membrane rupture knife seat 601 to rotate, so as to实现 the rotational cutting treatment of the partial wall membrane of the guiding membrane hole 608 penetrating through the partition plate 60 to protrude into the negative pressure drainage groove 401 on the outer wall of the amniotic membrane, thereby further improving the amniotic membrane rupture effect; it should be noted that the set amniotic membrane rupture blade 602 can be a special structure, such as a cross-shaped structure or a rich-shaped structure. When the amniotic membrane rupture blade 602 rotates, the amniotic membrane rupture blade 602 can实现 the transverse cutting of the outer wall of the amniotic membrane. The rotation angle of the amniotic membrane rupture blade 602 is 0-45°. When the amniotic membrane rupture blade 602 rotates forward and backward, the length of the air guide tube 606 can adapt to the rotation and movement range of the amniotic membrane rupture knife seat 601, so as to ensure the stable operation of the rotational cutting. When the amniotic membrane rupture is completed, the amniotic membrane rupture blade 602 on the amniotic membrane rupture knife seat 601 can be rotated to the position of the knife groove 609 by rotation, so that the amniotic membrane rupture blade 602 is clamped into the knife groove 60 to be collected.

[0046] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An obstetric nursing device for ruptured membranes with a negative pressure balancing function, comprising an insertion tube (1), characterized in that: An endoscope (7) is fixedly installed on the upper part of the inner rear end of the plug tube (1). A membrane breaking assembly (6) is provided at the inner rear end of the plug tube (1). The membrane breaking assembly (6) includes a baffle plate (607) fixed at the inner rear end of the plug tube (1). A guide membrane hole (608) is opened inside the baffle plate (607). The number of guide membrane holes (608) is multiple. A knife groove (609) is opened on the rear end face of the baffle plate (607). A membrane breaking blade (602) is movably installed inside the knife groove (609). The plug tube (1) is fixedly installed with a top bucket (3) at its rear end. The top bucket (3) and the plug tube (1) are provided with an expansion and compression assembly (2) on their inner and outer sides. The expansion and compression assembly (2) also includes a compression bladder (201) fixedly installed on the outer end face of the insertion tube (1); A film breaking auxiliary control component (5) is provided in front of the film breaking component (6), and the film breaking auxiliary control component (5) includes a positioning ring frame (502) fixedly installed in the inner wall of the insertion tube (1); A positioning guide ring (611) is slidably installed at the edge of the rear end face of the positioning ring frame (502). A film-breaking knife seat (601) is fixedly installed on the rear end face of the positioning guide ring (611). A second insertion hole (610) matching the auxiliary control rod (501) is opened at the middle position of the film-breaking knife seat (601). A film-breaking guide groove (603) is opened inside the film-breaking knife seat (601). The membrane breaking guide groove (603) is fixedly installed with a spring (604) and a top bladder (605). There are three springs (604). The top bladder (605) is located between adjacent springs (604). The membrane breaking knife seat (601) is fixedly installed with an air guide tube (606) that penetrates the inside of the insert tube (1). The top bladder (605) is connected to the squeezing bladder (201) through the air guide tube (606).

2. The obstetric nursing device for ruptured membranes with a negative pressure balancing function according to claim 1, characterized in that: The expansion and extrusion assembly (2) includes a heating wire (206) embedded in the outer wall of the plug tube (1).

3. The obstetric nursing device for ruptured membranes with a negative pressure balancing function according to claim 2, characterized in that: The inner end face of the compression bladder (201) is fixedly connected to a pressure relief valve pipe (205) that passes through the inside of the plug-in cylinder (1).

4. The obstetric nursing membrane rupture and delivery device with balanced negative pressure function according to claim 3, characterized in that: The top bucket (3) has a limiting bladder groove (204) inside, and an expansion bladder (203) is movably installed inside the limiting bladder groove (204). A connecting air tube (202) runs through the inner wall of the top bucket (3), and the compression bladder (201) is connected to the expansion bladder (203) through the connecting air tube (202).

5. The obstetric nursing membrane rupture and delivery device with balanced negative pressure function according to claim 4, characterized in that: The insertion tube (1) is provided with a drainage negative pressure assembly (4) at its interior and front bottom. The drainage negative pressure assembly (4) includes a negative pressure drainage groove (401) opened inside the insertion tube (1). The negative pressure drainage groove (401) is connected to the compression bladder (201) through a pressure relief valve pipe (205).

6. The obstetric nursing membrane rupture and delivery device with balanced negative pressure function according to claim 5, characterized in that: The drainage negative pressure assembly (4) also includes a drainage tube (402) fixed at the bottom front end of the plug tube (1). A control valve (403) is fixedly installed in the middle of the drainage tube (402). A vacuum negative pressure bag (404) is fixedly connected to the bottom end of the drainage tube (402). The negative pressure drainage groove (401) is interconnected with the vacuum negative pressure bag (404) through the drainage tube (402).

7. The obstetric nursing membrane rupture and delivery device with balanced negative pressure function according to claim 6, characterized in that: The positioning ring frame (502) has a first insertion hole (505) in the middle position, and an auxiliary control rod (501) is inserted inside the first insertion hole (505).

8. The obstetric nursing device for ruptured membranes with a negative pressure balancing function according to claim 7, characterized in that: The positioning ring frame (502) has an assembly groove (503) on its rear end face. A lever (504) is movably installed inside the assembly groove (503). The lever (504) has an L-shaped structure and is fixedly connected to the outer wall of the auxiliary control lever (501).

Images