Uterine cavity filling device for extrauterine surgery during delivery

Abstract

The present invention belongs to the field of medical devices, and specifically relates to a uterine cavity filling device for extrauterine surgery during delivery, including an infusion tube, a balloon and a one-way pressure valve connected to the front end of the infusion tube, and a constant temperature liquid delivery component connected to the rear end of the infusion tube for delivering constant temperature liquid to the balloon and the one-way pressure valve. The front end of the infusion tube is provided with at least two liquid outlet ports, and the balloon and the one-way pressure valve are respectively connected to one liquid outlet port. The present application adopts a set of devices to achieve long-term and effective filling of the uterine cavity with the balloon, and the physiological saline is not easy to be lost excessively. At the same time, it can ensure the simulated amniotic fluid filling state in the uterine cavity. The set of devices realizes multi-faceted support for the uterus. Compared with simply directly filling the uterine cavity with physiological saline, the present application is not only reliable and efficient, but also the amount of physiological saline used and the amount of loss can be greatly reduced.

Description

Technical Field

[0001] The invention belongs to the field of medical devices, and in particular relates to a uterine cavity filling device for extrauterine surgery during delivery. Background Art

[0002] Extrauterine surgery refers to surgery performed directly on a newborn baby outside the mother's body before the baby's umbilical cord is cut, while the umbilical cord supplies blood and oxygen. This can maintain stable blood circulation and improve the success rate of the operation. The umbilical cord is cut after the operation is completed. However, the problem faced by extrauterine surgery is that after the fetus is delivered from the uterus, the uterine pressure decreases, and a series of changes such as uterine contraction and placental detachment will occur. Once the placenta is detached, the umbilical cord must be cut. To achieve extrauterine surgery, it is necessary to maintain uterine cavity pressure to prevent placental detachment. However, there is currently no better way to maintain uterine cavity pressure in order to better achieve extrauterine surgery. When the fetus is delivered, the lower segment of the uterus needs to be incised about 10-12 cm long, and the amniotic fluid comes out immediately. It is also easy to flow out if the uterine cavity is simply and directly filled with liquid, and it is impossible to maintain and support the uterine cavity and ensure uterine cavity pressure normally. Summary of the invention

[0003] The object of the present invention is to provide a uterine cavity filling device for extrauterine surgery during delivery in view of the above problems.

[0004] The above technical objectives of the present invention are achieved through the following technical solutions:

[0005] A uterine cavity filling device for extrauterine surgery during delivery comprises an infusion tube, a balloon and a one-way pressure valve connected to the front end of the infusion tube, and a constant temperature liquid delivery component connected to the rear end of the infusion tube for delivering constant temperature liquid to the balloon and the one-way pressure valve. The front end of the infusion tube is provided with at least two liquid outlet ports, and the balloon and the one-way pressure valve are respectively connected to one liquid outlet port.

[0006] Before the extrauterine surgery, a small incision is made in the uterus, and the balloon is inserted into the uterus first. Then, the constant temperature liquid delivery component delivers constant temperature saline to the balloon to fill it. When the balloon is filled to a certain degree to support the uterus, the fetus is delivered for extrauterine surgery. After the fetus is delivered, the constant temperature liquid delivery component continues to deliver the fluid. During the balloon filling process, when the pressure of the one-way pressure valve exceeds the set value, the one-way pressure valve opens and directly injects constant temperature saline into the uterine cavity to further fill the uterus, so as to achieve the best environment for simulating amniotic fluid. In this way, the uterine cavity is fully supported and the pressure of the uterine cavity is maintained, providing strong protection for extrauterine surgery.

[0007] Preferably, the front end of the infusion tube is connected to three output branches for forming three liquid outlet ports, wherein two output branches are arranged opposite to each other and are respectively connected to a balloon, and one output branch is connected to a one-way pressure valve.

[0008] Since the shape of the uterus is similar to that of a heart, the present application uses two balloons to fill the uterus so that the balloons are more in line with the shape of the uterus after filling, thereby providing a more conformable support to the uterus, reducing the space in the uterine cavity, and preventing the liquid in the balloons from being lost, thereby ensuring that the uterine cavity is effectively supported for a long time. However, the uterus is only a heart-shaped shape and is not completely regular, and the balloons cannot excessively support the uterine cavity and damage it, so the balloons only fill most of the uterine cavity content and cannot completely fill the uterus. The remaining gaps in the uterus are filled with physiological saline sent out by a one-way pressure valve, thereby filling the remaining gaps in the uterus and simulating the amniotic fluid environment so that the uterus maintains a better natural physiological state for extrauterine surgery, ensuring safety during the operation.

[0009] Preferably, the liquid outlet port comprises a central liquid outlet coaxial with the infusion tube and side punching ports respectively located on both sides of the central liquid outlet, a one-way pressure valve is provided on the central liquid outlet, and a balloon is sealed and connected to the side punching ports.

[0010] The design of the above structure is conducive to the balloon filling the uterine cavity symmetrically and evenly, and is also conducive to the one-way pressure valve to spread from the center to the surroundings when filling the uterine cavity with physiological saline to better fill the gaps in the uterine cavity.

[0011] Preferably, the distance from the front end of the central liquid outlet to the front end of the infusion tube is smaller than the distance from the front end of the side punching port to the front end of the infusion tube, and the angle between the axis of the central liquid outlet and the axis of the side punching port is greater than 15 degrees and less than 45 degrees.

[0012] The design of the above structure allows the balloon to be filled in a way that it is expanded to both sides, the uterine cavity is effectively supported, and the balloons will not be overcrowded and block the outlet of the one-way pressure valve, so as to ensure the effective outlet of the one-way pressure valve. The above angle should not be too large to prevent the balloon from not matching the shape of the uterus after filling, which will not only fail to achieve a good filling effect but also over-press the uterus. The above angle should not be too small to prevent the balloons from being squeezed together, which will not only block the one-way pressure valve but also prevent the outer side of the balloon from fully expanding to fill the uterine cavity.

[0013] Preferably, the balloon comprises a gradually narrowing port section near the balloon opening and a spherical section connected to the front end of the narrowing port section, and the front end of the central liquid outlet corresponds to the narrowing port section.

[0014] Preferably, the balloon is a conical balloon with a narrowed balloon opening.

[0015] The shape of the balloon ensures that it better conforms to the shape of the uterine cavity and can effectively prevent the one-way pressure valve from being blocked and discharging fluid after the balloon is filled.

[0016] Preferably, an anti-blocking cover is provided on the valve port of the one-way pressure valve, a plurality of liquid outlet holes are opened on the anti-blocking cover, the anti-blocking cover is connected to the valve port by a plurality of connecting strips, and liquid outlet gaps are provided between adjacent connecting strips.

[0017] The design of the anti-blocking cover and the connecting strip allows liquid to be discharged from the side even if the liquid discharge from the one-way pressure valve port is not smooth.

[0018] Preferably, the anti-blocking cover is an arc-shaped cover which is concave in the direction of the one-way pressure valve, the outer edge of the arc-shaped cover extends in the direction of the one-way pressure valve to form a protective edge, and the front end of the connecting strip is located on the inner side of the protective edge.

[0019] Even if the balloon hits the one-way pressure valve, it will not be able to deform too much to completely block the anti-blocking cover due to its own tension, and the size of the balloon itself does not need to completely fill the uterine cavity. There is still a gap in the uterine cavity. The arc cover design of the above structure ensures that the liquid outlet hole on the arc cover is not easily blocked, and the liquid can be discharged smoothly. The design of the protective edge makes the device safer when used and is not easy to damage body tissues or operators.

[0020] Preferably, the constant temperature liquid delivery assembly comprises a pressure air pump, a physiological saline container and a constant temperature heater connected in sequence through a pipeline, and the constant temperature heater is connected to the infusion tube. The physiological saline container can be a disposable physiological saline bag or physiological saline bottle commonly used in hospitals, and the physiological saline bag or physiological saline bottle containing physiological saline itself is connected to a pressure air pump with adjustable pressure and a constant temperature heater respectively, and the physiological saline is delivered to the constant temperature heater by the pressure air pump, and then delivered to the balloon and the one-way pressure valve through the infusion tube after being heated by the constant temperature heater, and when the balloon is filled to a certain extent and the pressure measured by the one-way pressure valve exceeds the set value, the physiological saline that continues to be delivered is output from the one-way pressure valve to fill the uterine cavity.

[0021] Preferably, the balloon is a low-tension airbag. The low-tension airbag is not easy to be overfilled, and can ensure that the one-way pressure valve starts to discharge fluid in time, and is not easy to block the one-way pressure valve. At the same time, the low-tension airbag allows enough space in the uterine cavity to facilitate the discharge of fluid from the one-way pressure valve to form a better simulated amniotic fluid environment. The low-tension airbag can be made of silicone material.

[0022] The present application uses a set of devices to achieve long-term effective filling of the uterine cavity with a balloon, and prevent excessive loss of saline solution, while ensuring that the uterine cavity is filled with simulated amniotic fluid. The device supports the uterus in many ways. Compared with simply filling the uterine cavity with saline solution, the present application is not only reliable and efficient, but also can greatly reduce the amount of saline used and lost.

[0023] In summary, the present invention has the following beneficial effects:

[0024] 1. Before the extrauterine surgery, a small incision is made in the uterus, and the balloon is inserted into the uterus first. Then, the constant temperature liquid delivery component is used to deliver constant temperature saline to the balloon to fill the balloon. When the balloon is filled to a certain degree to support the uterus, the fetus is delivered for extrauterine surgery. After the fetus is delivered, the constant temperature liquid delivery component continues to deliver the fluid. During the balloon filling process, when the pressure of the one-way pressure valve exceeds the set value, the one-way pressure valve will open and directly inject constant temperature saline into the uterine cavity to further fill the uterus, so as to achieve the best environment for simulating amniotic fluid. In this way, the uterine cavity is fully supported and the pressure of the uterine cavity is maintained, providing strong protection for extrauterine surgery.

[0025] 2. This application uses a set of devices to achieve long-term effective filling of the uterine cavity with a balloon, and prevents excessive loss of saline. At the same time, it can ensure the simulated amniotic fluid filling state in the uterine cavity, which is conducive to the good supply of the umbilical cord to the fetus during extrauterine surgery. A set of devices can support the uterus in many aspects. Compared with simply filling the uterine cavity with saline directly, this application is not only reliable and efficient, but also can greatly reduce the amount of saline used and lost.

[0026] 3. This application has a simple structure, low cost, and operation plan, making intraoperative operation safer and more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of this application.

[0028] Figure 2 It is a schematic diagram of the one-way pressure valve structure. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0030] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

[0031] Embodiment 1:

[0032] A uterine cavity filling device for extrauterine surgery during delivery comprises an infusion tube 1, a balloon 2 and a one-way pressure valve 3 connected to the front end of the infusion tube, and a constant temperature liquid delivery component connected to the rear end of the infusion tube for delivering constant temperature liquid to the balloon and the one-way pressure valve. The front end of the infusion tube is provided with at least two liquid outlet ports 11, and the balloon and the one-way pressure valve are respectively connected to one liquid outlet port.

[0033] Before the extrauterine surgery, a small incision is made in the uterus, and the balloon is inserted into the uterus first. Then, the constant temperature liquid delivery component delivers constant temperature saline to the balloon to fill it. When the balloon is filled to a certain degree to support the uterus, the fetus is delivered for extrauterine surgery. After the fetus is delivered, the constant temperature liquid delivery component continues to deliver the fluid. During the balloon filling process, when the pressure of the one-way pressure valve exceeds the set value, the one-way pressure valve opens and directly injects constant temperature saline into the uterine cavity to further fill the uterus, so as to achieve the best environment for simulating amniotic fluid. In this way, the uterine cavity is fully supported and the pressure of the uterine cavity is maintained, providing strong protection for extrauterine surgery.

[0034] Embodiment 2:

[0035] The difference from the above embodiment is that the front end of the infusion tube is connected with three output branches 12 for forming three liquid outlet ports, two of which are arranged opposite to each other and are respectively connected to a balloon, and one output branch is connected to a one-way pressure valve.

[0036] Since the shape of the uterus is similar to that of a heart, the present application uses two balloons to fill the uterus so that the balloons are more in line with the shape of the uterus after filling, thereby providing a more conformable support to the uterus, reducing the space in the uterine cavity, and preventing the liquid in the balloons from being lost, thereby ensuring that the uterine cavity is effectively supported for a long time. However, the uterus is only a heart-shaped shape and is not completely regular, and the balloons cannot excessively support the uterine cavity and damage it, so the balloons only fill most of the uterine cavity content and cannot completely fill the uterus. The remaining gaps in the uterus are filled with physiological saline sent out by a one-way pressure valve, thereby filling the remaining gaps in the uterus and simulating the amniotic fluid environment so that the uterus maintains a better natural physiological state for extrauterine surgery, ensuring safety during the operation.

[0037] Embodiment three:

[0038] The difference from the above embodiment is that the liquid outlet port includes a central liquid outlet 111 coaxial with the infusion tube and side punching ports 112 located on both sides of the central liquid outlet, a one-way pressure valve is provided on the central liquid outlet, and a balloon is sealed and connected to the side punching ports.

[0039] The design of the above structure is conducive to the balloon filling the uterine cavity symmetrically and evenly, and is also conducive to the one-way pressure valve to spread from the center to the surroundings when filling the uterine cavity with physiological saline to better fill the gaps in the uterine cavity.

[0040] Embodiment 4:

[0041] The difference from the above embodiment is that the distance from the front end of the central liquid outlet to the front end of the infusion tube is smaller than the distance from the front end of the side punching bag port to the front end of the infusion tube, and the angle between the axis of the central liquid outlet and the axis of the side punching bag port is greater than 15 degrees and less than 45 degrees.

[0042] The design of the above structure allows the balloon to be filled in a way that it is expanded to both sides, the uterine cavity is effectively supported, and the balloons will not be overcrowded and block the outlet of the one-way pressure valve, so as to ensure the effective outlet of the one-way pressure valve. The above angle should not be too large to prevent the balloon from not matching the shape of the uterus after filling, which will not only fail to achieve a good filling effect but also over-press the uterus. The above angle should not be too small to prevent the balloons from being squeezed together, which will not only block the one-way pressure valve but also prevent the outer side of the balloon from fully expanding to fill the uterine cavity.

[0043] Embodiment five:

[0044] The difference from the above embodiment is that the balloon includes a gradually narrowing narrowing port section 21 near the balloon opening and a spherical section 22 connected to the front end of the narrowing port section, and the front end of the central liquid outlet corresponds to the narrowing port section. The shape of the above balloon ensures that it is more in line with the shape of the uterine cavity and can effectively prevent the balloon from blocking the one-way pressure valve from discharging liquid after being filled.

[0045] Embodiment six:

[0046] The difference from the above-mentioned embodiment is that the balloon is a cone-shaped balloon with a narrowed balloon opening.

[0047] The shape of the balloon ensures that it better conforms to the shape of the uterine cavity and can effectively prevent the one-way pressure valve from being blocked and discharging fluid after the balloon is filled.

[0048] Embodiment seven:

[0049] The difference from the above embodiment is that an anti-blocking cover 4 is provided on the valve port of the one-way pressure valve, a plurality of liquid outlet holes are opened on the anti-blocking cover, the anti-blocking cover is connected to the valve port by a plurality of connecting strips 41, and liquid outlet gaps are provided between adjacent connecting strips.

[0050] The design of the anti-blocking cover and the connecting strip allows liquid to be discharged from the side even if the liquid discharge from the one-way pressure valve port is not smooth.

[0051] Embodiment eight:

[0052] The difference from the above embodiment is that the anti-blocking cover is an arc-shaped cover concave in the direction of the one-way pressure valve, the outer edge of the arc-shaped cover extends in the direction of the one-way pressure valve to form a protective edge, and the front end of the connecting strip is located on the inner side of the protective edge.

[0053] Even if the balloon hits the one-way pressure valve, it will not be able to deform too much to completely block the anti-blocking cover due to its own tension, and the size of the balloon itself does not need to completely fill the uterine cavity. There is still a gap in the uterine cavity. The arc cover design of the above structure ensures that the liquid outlet hole on the arc cover is not easily blocked, and the liquid can be discharged smoothly. The design of the protective edge makes the device safer when used and is not easy to damage body tissues or operators.

[0054] Embodiment nine:

[0055] The difference from the above embodiment is that the constant temperature liquid delivery component includes a pressure air pump 5, a physiological saline container 6 and a constant temperature heater 7 which are sequentially connected through a pipeline, and the constant temperature heater is connected to the infusion tube. The physiological saline container can be a disposable physiological saline bag or a physiological saline bottle commonly used in hospitals. The physiological saline bag or the physiological saline bottle containing physiological saline is connected to a pressure air pump with adjustable pressure and a constant temperature heater respectively. The physiological saline is delivered to the constant temperature heater by the pressure air pump, and after being heated by the constant temperature heater, it is delivered to the balloon and the one-way pressure valve through the infusion tube. When the balloon is filled to a certain extent and the pressure measured by the one-way pressure valve exceeds the set value, the physiological saline that continues to be delivered is output from the one-way pressure valve to fill the uterine cavity.

[0056] Embodiment ten:

[0057] The difference from the above embodiment is that the balloon is a low-tension airbag. The low-tension airbag is not easy to be overfilled, and can ensure that the one-way pressure valve starts to discharge fluid in time, and is not easy to block the one-way pressure valve. At the same time, the low-tension airbag allows enough space in the uterine cavity to facilitate the discharge of fluid from the one-way pressure valve to form a better simulated amniotic fluid environment. The low-tension airbag can be made of silicone material.

[0058] The pressure at the venous end of the capillaries is generally 10 mmHg. In actual applications, the pressure of the one-way pressure valve can be set at 10 mmHg. When 500-1000 ml of saline is filled into the balloon, the pressure inside the balloon should be lower than 10 mmHg. When the pressure inside the balloon exceeds the set value of 10 mmHg, the one-way pressure valve opens to discharge the saline in the tube directly and continuously into the uterine cavity. This application, in conjunction with an adjustable pressure pressure pump, can effectively keep the pressure inside the uterine cavity lower than the pressure at the venous end of the capillaries, thereby ensuring that the uterine placental circulation is continuous and effective.

[0059] The present application uses a set of devices to achieve long-term effective filling of the uterine cavity with a balloon, and prevent excessive loss of saline solution, while ensuring that the uterine cavity is filled with simulated amniotic fluid. The device supports the uterus in many ways. Compared with simply filling the uterine cavity with saline solution, the present application is not only reliable and efficient, but also can greatly reduce the amount of saline used and lost.

Claims

1. A uterine cavity filling device for extrauterine surgery during delivery, characterized in that: The invention comprises an infusion tube (1), a balloon (2) and a one-way pressure valve (3) connected to the front end of the infusion tube, and a constant temperature liquid delivery component connected to the rear end of the infusion tube for delivering constant temperature liquid to the balloon and the one-way pressure valve, wherein the front end of the infusion tube is provided with at least two liquid outlet ports (11), and the balloon and the one-way pressure valve are respectively connected to one liquid outlet port; The valve port of the one-way pressure valve is provided with an anti-blocking cover (4), the anti-blocking cover is provided with a plurality of liquid outlet holes, the anti-blocking cover is connected to the valve port via a plurality of connecting strips (41), and liquid outlet gaps are provided between adjacent connecting strips; The front end of the infusion tube is connected to three output branch pipes (12) for forming three liquid outlet ports, wherein two output branch pipes are arranged opposite to each other and are respectively connected to a balloon, and one output branch pipe is connected to a one-way pressure valve; The balloon is a cone-shaped balloon with a narrowed balloon opening.

2. The uterine cavity filling device for extrauterine surgery during delivery according to claim 1, characterized in that: The liquid outlet port comprises a central liquid outlet (111) coaxial with the infusion tube and side sac openings (112) respectively located on both sides of the central liquid outlet, a one-way pressure valve is provided on the central liquid outlet, and a balloon is sealed and connected to the side sac openings.

3. A uterine cavity filling device for extrauterine surgery during delivery according to claim 2, characterized in that: The distance from the front end of the central liquid outlet to the front end of the infusion tube is smaller than the distance from the front end of the side punching port to the front end of the infusion tube, and the angle between the axis of the central liquid outlet and the axis of the side punching port is greater than 15 degrees and less than 45 degrees.

4. The uterine cavity filling device for extrauterine surgery during delivery according to claim 2, characterized in that: The balloon comprises a gradually narrowing port section (21) near the balloon opening and a spherical section (22) connected to the front end of the narrowing port section, and the front end of the central liquid outlet corresponds to the narrowing port section.

5. The uterine cavity filling device for extrauterine surgery during delivery according to claim 1, characterized in that: The anti-blocking cover is an arc-shaped cover which is concave in the direction of the one-way pressure valve. The outer edge of the arc-shaped cover extends in the direction of the one-way pressure valve to form a protective edge. The front end of the connecting strip is located inside the protective edge.

6. The uterine cavity filling device for extrauterine surgery during delivery according to claim 1, characterized in that: The constant temperature liquid delivery component comprises a pressure air pump (5), a physiological saline container (6) and a constant temperature heater (7) which are sequentially connected via pipelines, and the constant temperature heater is connected to the liquid infusion tube.

7. A uterine cavity filling device for extrauterine surgery during delivery according to any one of claims 2 to 6, characterized in that: The balloon is a low-tension air balloon.

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