阅读说明：本技术 一种基于负压原理的产科胎头吸引装置 (Obstetrical fetal head suction device based on negative pressure principle ) 是由 袁超 于 2021-08-23 设计创作，主要内容包括：本发明公开了一种基于负压原理的产科胎头吸引装置,涉及医疗器械技术领域；为了解决无法有效的对胎儿的头部进行均匀的负压吸引,容易导致婴儿头部产生淤血的问题；本装置具体包括安装框,所述安装框外壁滑动连接有滑动板,滑动板一侧外壁固定有第一气囊,第一气囊一侧外壁固定有连接板。本发明通过设置第二气囊、滑动板和三通电控气阀,当婴儿的头部整体还未移动出孕妇的下体时,工作人员可通过第二接触板吸附住婴儿头顶部分探出的部位,同时一手扶住安装框,另一只手将拉杆向外拉动,让第二接触板将婴儿的头部向外拉动,随着第二接触板不断向安装框内部移动,第二接触板会对安装框内部的第二气囊进行挤压。(The invention discloses an obstetrical fetal head suction device based on a negative pressure principle, and relates to the technical field of medical instruments; the problem that the head of a baby is easy to generate blood stasis because the head of the baby cannot be uniformly and negatively sucked effectively is solved; the device specifically comprises a mounting frame, wherein the outer wall of the mounting frame is connected with a sliding plate in a sliding mode, a first air bag is fixed on the outer wall of one side of the sliding plate, and a connecting plate is fixed on the outer wall of one side of the first air bag. According to the invention, by arranging the second air bag, the sliding plate and the three-way electric control air valve, when the whole head of the baby does not move out of the lower body of the pregnant woman, a worker can adsorb the position extending out of the top part of the baby head through the second contact plate, meanwhile, hold the mounting frame with one hand, pull the pull rod outwards with the other hand, so that the second contact plate pulls the head of the baby outwards, and the second contact plate can extrude the second air bag in the mounting frame along with the continuous movement of the second contact plate towards the inside of the mounting frame.)

1. An obstetrical fetal head suction device based on a negative pressure principle comprises a mounting frame (1) and is characterized in that a sliding plate (24) is connected to the outer wall of the mounting frame (1) in a sliding mode, a first air bag (15) is fixed to the outer wall of one side of the sliding plate (24), a connecting plate (29) is fixed to the outer wall of one side of the first air bag (15), the outer wall of the bottom of the connecting plate (29) is fixed to the outer wall of the top of the mounting frame (1), an air inlet pipe (14) is fixed to the outer wall of one side of the connecting plate (29), a three-way electric control air valve (13) is fixed to the outer wall of one side of the air inlet pipe (14), the three-way electric control air valve (13) penetrates through the outer wall of one side of the mounting frame (1), an elastic telescopic rod (28) is fixed to the outer wall of one side of the sliding plate (24), a first contact plate (17) is fixed to the outer wall of the top of the elastic telescopic rod (28), the outer wall of one side of the mounting frame (1) is provided with a rectangular through hole, the inner wall of the rectangular through hole is connected with a pull rod (21) in a sliding manner, the outer wall of one side of the pull rod (21), the mounting frame (1) and the elastic telescopic rod (28) is provided with an air exhaust mechanism, the outer wall of one side of the pull rod (21) is fixed with a second contact plate (19), the outer wall of one side of the pull rod (21) is fixed with a pull plate (6), the outer wall of one side of the second contact plate (19) is fixed with a second air bag (18), the outer wall of one side of the second air bag (18) is fixed with a connecting block (32), the outer wall of one side of the connecting block (32) is fixed on the inner wall of one side of the mounting frame (1), the outer wall of one side of the connecting block (32) is provided with an air injection pipe (33), the outer wall of one side of the air injection pipe (33) is fixed on the outer wall of the bottom of the three-way electric control air valve (13), and the second contact plate (19), the outer walls of one sides of the arc-shaped abutting plate (16) and the first contact plate (17) are respectively provided with an air suction hole (30).

2. The obstetrical fetal head suction device based on the negative pressure principle as claimed in claim 1, wherein a control panel (10) is fixed on the outer wall of the top of the mounting frame (1), and the three-way electric control air valve (13) is electrically connected with the control panel (10).

3. The obstetrical fetal head suction device based on the negative pressure principle as claimed in claim 2, wherein the air suction mechanism comprises a first air guide hose (22), a second air guide hose (25) and an air guide pipe connector (11), the first air guide hose (22) is arranged on the outer wall of the top of the pull rod (21), the outer wall of one side of the first air guide hose (22) is arranged on the outer wall of one side of the mounting frame (1), the air guide pipe connector (11) is arranged on the outer wall of the top of the mounting frame (1), the second air guide hose (25) is arranged on the outer wall of one side of the elastic telescopic rod (28), and the outer wall of one side of the second air guide hose (25) is arranged on the outer wall of the top of the mounting frame (1).

4. The obstetrical fetal head suction device based on the negative pressure principle as claimed in claim 3, wherein a mounting block (23) is fixed on the outer wall of the top of the elastic telescopic rod (28), a pressure sensor (27) is fixed on the outer wall of one side of the mounting block (23), a push rod (26) is fixed on the outer wall of one side of the arc-shaped abutting plate (16), and the pressure sensor (27) is electrically connected with the control panel (10).

5. The obstetrical fetal head suction device based on the negative pressure principle as claimed in claim 4, wherein the outer wall of the mounting frame (1) is provided with a guide sliding groove (34), and the sliding plate (24) is slidably connected to the inner wall of the guide sliding groove (34).

6. Obstetrical fetal head suction apparatus according to the negative pressure principle of claim 5, characterized in that the outer walls of the arc-shaped abutting plate (16), the first contact plate (17) and the second contact plate (19) are respectively provided with a sponge pad (31).

7. The obstetrical fetal head suction device based on the negative pressure principle as claimed in claim 6, wherein an air suction pipe (12) is arranged on the outer wall of one side of the three-way electric control air valve (13).

8. The obstetrical fetal head suction device based on the negative pressure principle as claimed in claim 7, wherein the outer wall of the mounting frame (1) is rotatably connected with a lantern ring (8), the outer wall of one side of the lantern ring (8) is fixed with a fixing plate (7), the outer wall of the bottom of the fixing plate (7) is fixed with a sliding sheet (20), the outer wall of the bottom of the sliding sheet (20) is slidably connected with a mounting plate (5), and the outer walls of the support plate (2) and the fixing plate (7) are respectively provided with a threaded through hole.

9. The obstetrical fetal head suction device based on the negative pressure principle as claimed in claim 8, wherein a support column (4) is fixed to the outer wall of the bottom of the mounting plate (5), the sucking disc (3) is fixed to the outer wall of the bottom of the support column (4), a guide block (35) is fixed to the outer wall of the top of the mounting plate (5), the sliding sheet (20) is slidably connected to the outer wall of one side of the guide block (35), an indicator lamp (9) is fixed to the outer wall of the lantern ring (8), and the indicator lamp (9) is electrically connected with the control panel (10).

Technical Field

The invention relates to the technical field of medical instruments, in particular to an obstetrical fetal head suction device based on a negative pressure principle.

Background

The delivery assistance means a series of measures taken before and during labor for enabling a fetus to be delivered out of a maternal birth canal smoothly, and mainly comprises the steps of caring a puerpera, carefully observing the labor course and guiding the fetus to be correctly matched with the labor course progress and delivery, wherein the fetal head suction delivery assistance device in obstetrics and gynecology department is a fetal head suction device, when the puerpera is in the process of delivery and is required to deliver the fetus but not deliver the fetus but can not carry out cesarean section operation in time, the fetal head suction delivery assistance device is urgently needed to be used for delivering the delivery assistance, and the delivery assistance of the puerpera is helped to deliver work

Through the retrieval, chinese patent application number is CN 202010432118.7's patent, discloses a child head attracts practise midwifery device for gynaecology and obstetrics's practise midwifery, including the base, the top of base is provided with the shell, attracts case fixed connection through the negative pressure between the bottom left end of shell and the base, through backup pad fixed connection between the bottom right-hand member of shell and the base, and the left end that the negative pressure attracted the case is fixed to be provided with attracts the hose, but above-mentioned technical scheme still exists and can't effectually carry out even negative pressure suction to the head of foetus owing to not setting up corresponding mechanism that can carry out even attraction to each position of baby's head, leads to the problem that baby's head produced extravasated blood easily.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides an obstetrical fetal head suction device based on a negative pressure principle.

In order to achieve the purpose, the invention adopts the following technical scheme:

an obstetrical fetal head suction device based on a negative pressure principle comprises a mounting frame, wherein the outer wall of the mounting frame is connected with a sliding plate in a sliding manner, a first air bag is fixed on the outer wall of one side of the sliding plate, a connecting plate is fixed on the outer wall of one side of the first air bag, the outer wall of the bottom of the connecting plate is fixed on the outer wall of the top of the mounting frame, an air inlet pipe is fixed on the outer wall of one side of the air inlet pipe, a three-way electric control air valve is fixed on the outer wall of one side of the air inlet pipe and penetrates through the outer wall of one side of the mounting frame, an elastic telescopic rod is fixed on the outer wall of one side of the sliding plate, a first contact plate is fixed on the outer wall of one side of the elastic telescopic rod, an arc-shaped abutting plate is fixed on the outer wall of the top of the first contact plate, a rectangular through hole is formed in the outer wall of one side of the mounting frame, a pull rod is connected with the inner wall of the rectangular through hole in a sliding manner, an air exhaust mechanism is arranged on the outer walls of one side of the pull rod, a second contact plate is fixed on the outer wall of the pull rod, the outer wall of one side of the second contact plate is fixed with a second air bag, the outer wall of one side of the second air bag is fixed with a connecting block, the outer wall of one side of the connecting block is fixed on the inner wall of one side of the mounting frame, the outer wall of one side of the air injection pipe is fixed on the outer wall of the bottom of the three-way electric control air valve, and the outer wall of one side of the second contact plate, the arc-shaped support plate and the outer wall of one side of the first contact plate are respectively provided with an air exhaust hole.

Preferably: the outer wall of the top of the mounting frame is fixed with a control panel, and the three-way electric control air valve is electrically connected with the control panel.

Further: the air exhaust mechanism comprises a first air guide hose, a second air guide hose and an air guide pipe interface, the first air guide hose is arranged on the outer wall of the top of the pull rod, the outer wall of one side of the first air guide hose is arranged on the outer wall of one side of the installation frame, the air guide pipe interface is arranged on the outer wall of the top of the installation frame, the second air guide hose is arranged on the outer wall of one side of the elastic telescopic rod, and the outer wall of one side of the second air guide hose is arranged on the outer wall of the top of the installation frame.

Further preferred is: the outer wall of the top of the elastic telescopic rod is fixed with an installation block, the outer wall of one side of the installation block is fixed with a pressure sensor, the outer wall of one side of the arc-shaped abutting plate is fixed with an ejector rod, and the pressure sensor is electrically connected with the control panel.

As a preferable aspect of the present invention: the outer wall of the mounting frame is provided with a guide sliding chute, and the sliding plate is connected to the inner wall of the guide sliding chute in a sliding manner.

Further preferred as the invention: sponge cushions are respectively arranged on the outer walls of one sides of the arc-shaped abutting plate, the first contact plate and the second contact plate.

As a still further scheme of the invention: and an exhaust pipe is arranged on the outer wall of one side of the three-way electric control air valve.

On the basis of the scheme: the mounting frame outer wall rotates and is connected with the lantern ring, and lantern ring one side outer wall is fixed with the fixed plate, and fixed plate bottom outer wall is fixed with the slide, and slide bottom outer wall sliding connection has the mounting panel, and threaded through-hole has been opened respectively to backup pad and fixed plate one side outer wall.

On the basis of the foregoing scheme, it is preferable that: the mounting panel bottom outer wall is fixed with the support column, and support column bottom outer wall is fixed with the sucking disc, and mounting panel top outer wall is fixed with the guide block, and slider sliding connection is on one side outer wall of guide block, and lantern ring outer wall is fixed with the pilot lamp, pilot lamp and control panel electric connection.

The invention has the beneficial effects that:

1. by arranging the second air bag, the sliding plate and the three-way electric control air valve, when the whole head of the baby does not move out of the lower body of the pregnant woman, a worker can adsorb the position extending out of the top of the baby head through the second contact plate, hold the mounting frame by one hand, pull the pull rod outwards by the other hand, pull the head of the baby outwards through the second contact plate, along with the continuous movement of the second contact plate towards the inside of the mounting frame, the second contact plate can extrude the second air bag in the mounting frame, the gas in the second air bag enters the three-way electric control air valve through the gas injection pipe, at the moment, the control panel controls one side of the three-way electric control air valve to be opened by connecting one end of the gas inlet pipe, the gas is filled into the first air bag through the gas inlet pipe, the first air bag can push the sliding plate to move forwards after expanding, so that the arc-shaped abutting plate fixed on one side of the sliding plate and the first contact plate can be attached to the top of the baby head completely pulled out by the second contact plate, after the arc-shaped abutting plate and the first contact plate are attached to the top of the head of the baby which is completely pulled out, the control panel can control the three-way electric control air valve to be closed, the first air bag and the second air bag are in a relatively sealed state at the moment, a worker can directly pull the mounting frame backwards to help pull out the whole baby from the lower body of the pregnant woman, and the arc-shaped abutting plate and the first contact plate can be matched with the second contact plate to pull the head of the baby, so that the stress on the head of the baby is dispersed, and the head of the baby is prevented from being injured.

2. Through setting up elastic telescopic rod and pressure sensor, when arc is supported board and first contact plate one side outer wall and infant's head contact, the arc is supported the board and can be extruded pressure sensor through the ejector pin, control panel chance control tee bend automatically controlled pneumatic valve is closed when pressure reachs the setting value, the staff just can hardly be at the pulling pull rod after tee bend automatically controlled pneumatic valve closes, arc is supported board and first contact plate can not continue to move forward yet, second gasbag and first gasbag itself have fine buffering effect simultaneously, can cooperate elastic telescopic rod to avoid the arc to support the board, first contact plate and second contact plate and infant's head emergence hard collision, the holistic security of device has been improved.

3. By arranging the exhaust pipe, when the second air bag and the first air bag are required to be restored to the initial state of expansion and compression so as to continue using the device next time, a worker firstly pushes the second contact plate to reset the second contact plate, at the moment, the second air bag can suck the gas filled into the first air bag into the second air bag, when the first air bag is drained when the second contact plate is not reset, the worker can close one end of the three-way electric control air valve connected with the air inlet pipe through the control panel and open one end connected with the exhaust pipe, at the moment, the second air bag can fully fill the gas in the air inlet pipe through the exhaust pipe, so that the second contact plate can be reset smoothly, when the first air bag is not completely compressed and the second contact plate is reset, the worker can close one end connected with the air injection pipe through the control panel to control the three-way electric control air valve, meanwhile, one end connected with the exhaust tube is opened, and then the first air bag is squeezed by hands, so that the sliding plate can be smoothly reset.

4. Through setting up the lantern ring, fixed plate and backup pad, thereby staff's accessible lantern ring rotates the installing frame and lets the device can be better pull the head of foetus, and the accessible backup pad comes the height adjustment to the lantern ring, uses the screw to fix the fixed plate in the backup pad afterwards, and the backup pad can slide on the mounting panel simultaneously, lets the position of installing frame can be by convenient adjustment.

5. Through setting up support column and pilot lamp, the support column can cooperate the sucking disc to carry out effectual support and fixed to the mounting panel to let the whole stability more of device, when not needing the mounting panel to support the installing frame, the staff can twist the screw that is used for fixed plate, wholly takes off the lantern ring from the backup pad, avoids the mounting panel to hinder and connects the work, and when pressure that pressure sensor received exceeded the setting value, control panel also can control the pilot lamp and light.

Drawings

Fig. 1 is a schematic structural view of a maternity fetal head suction device based on the negative pressure principle, which is provided by the invention;

FIG. 2 is a schematic side view of the obstetrical fetal head suction apparatus based on the negative pressure principle according to the present invention;

FIG. 3 is a schematic structural view of a sliding plate of the obstetrical fetal head suction apparatus based on the negative pressure principle;

FIG. 4 is a schematic structural view of a mounting frame of the obstetrical fetal head suction device based on the negative pressure principle;

FIG. 5 is a schematic view of the internal structure of a mounting frame of the obstetrical fetal head suction apparatus based on the negative pressure principle;

FIG. 6 is a schematic view of a pull rod structure of the obstetrical fetal head suction apparatus based on the negative pressure principle;

fig. 7 is a schematic circuit flow diagram of an obstetrical fetal head suction device based on the negative pressure principle.

In the figure: the device comprises a mounting frame 1, a supporting plate 2, a sucking disc 3, a supporting column 4, a mounting plate 5, a pulling plate 6, a fixing plate 7, a lantern ring 8, an indicator lamp 9, a control panel 10, an air duct interface 11, an air exhaust tube 12, an electric control air valve 13 in a three-way mode, an air inlet tube 14, a first air bag 15, an arc-shaped abutting plate 16, a first contact plate 17, a second air bag 18, a second contact plate 19, a sliding plate 20, a pulling rod 21, a first air guide hose 22, a mounting block 23, a sliding plate 24, a second air guide hose 25, a push rod 26, a pressure sensor 27, an elastic telescopic rod 28, a connecting plate 29, an air exhaust hole 30, a sponge cushion 31, a connecting block 32, an air exhaust tube 33, a guide chute 34 and a guide block 35.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

Example 1:

an obstetrical fetal head suction device based on a negative pressure principle is disclosed, as shown in figures 1-7, and comprises a mounting frame 1, wherein the outer wall of the mounting frame 1 is slidably connected with a sliding plate 24, the outer wall of one side of the sliding plate 24 is fixed with a first air bag 15 through screws, the outer wall of one side of the first air bag 15 is fixed with a connecting plate 29 through screws, the outer wall of the bottom of the connecting plate 29 is fixed on the outer wall of the top of the mounting frame 1 through screws, the outer wall of one side of the connecting plate 29 is fixed with an air inlet pipe 14 through a flange, the outer wall of one side of the air inlet pipe 14 is fixed with a three-way electric control air valve 13 through a flange, the three-way electric control air valve 13 penetrates through the outer wall of one side of the mounting frame 1, the outer wall of one side of the sliding plate 24 is fixed with an elastic telescopic rod 28 through screws, the outer wall of one side of the elastic telescopic rod 28 is fixed with a first contact plate 17 through screws, the outer wall of the top of the first contact plate 17 is fixed with an arc-shaped abutting plate 16 through screws, and the outer wall of one side of the mounting frame 1 is provided with a rectangular through hole, the inner wall of the rectangular through hole is connected with a pull rod 21 in a sliding manner, the outer wall of one side of the pull rod 21, the mounting frame 1 and the elastic telescopic rod 28 is provided with an air exhaust mechanism, the outer wall of one side of the pull rod 21 is fixed with a second contact plate 19 through screws, the outer wall of one side of the pull rod 21 is fixed with a pull plate 6 through screws, the outer wall of one side of the second contact plate 19 is fixed with a second air bag 18 through screws, the outer wall of one side of the second air bag 18 is fixed with a connecting block 32 through screws, the outer wall of one side of the connecting block 32 is fixed on the inner wall of one side of the mounting frame 1 through screws, the outer wall of one side of the connecting block 32 is connected with an air injection pipe 33 through a flange, the outer wall of one side of the air injection pipe 33 is fixed on the outer wall of the bottom of the three-way electric control air valve 13 through a flange, the second contact plate 19, the outer walls of one sides of the arc-shaped abutting plate 16 and the first contact plate 17 are respectively provided with an air suction hole 30, the outer wall of the top of the mounting frame 1 is fixed with a control panel 10 through screws, and the three-way electric control air valve 13 is electrically connected with the control panel 10.

When the head of the baby does not move out of the lower body of the pregnant woman, the worker can adsorb the position, which is protruded from the top of the baby head, through the second contact plate 19, hold the mounting frame 1 with one hand, pull the pull rod 21 outwards with the other hand, so that the head of the baby is pulled outwards by the second contact plate 19, as the second contact plate 19 continuously moves towards the inside of the mounting frame 1, the second contact plate 19 can extrude the second air bag 18 inside the mounting frame 1, the gas inside the second air bag 18 enters the three-way electric control air valve 13 through the gas injection pipe 33, at this time, the control panel 10 controls one side of the three-way electric control air valve 13 to be opened, the gas is filled into the first air bag 15 through the gas inlet pipe 14, the first air bag 15 expands to push the sliding plate 24 to move forwards, so that the arc-shaped abutting plate 16 and the first contact plate 17 fixed on one side of the sliding plate 24 can be attached to the top of the baby head completely pulled out by the second contact plate 19, after the arc-shaped abutting plate 16 and the first contact plate 17 are attached to the top of the head of the baby which is completely pulled out, the control panel 10 can control the three-way electric control air valve 13 to be closed, at the moment, the first air bag 15 and the second air bag 18 are in a relatively sealed state, a worker can directly pull the mounting frame 1 backwards to help pull the whole baby out of the lower body of the pregnant woman, and the arc-shaped abutting plate 16 and the first contact plate 17 can be matched with the second contact plate 19 to pull the head of the baby, so that the stress on the head of the baby is dispersed, and the head of the baby is prevented from being injured.

In order to allow the suction holes 30 to suck the head of the infant; as shown in fig. 2 and 3, the air exhaust mechanism includes a first air guide hose 22, a second air guide hose 25 and an air guide tube connector 11, the first air guide hose 22 is inserted on the outer wall of the top of the pull rod 21, the outer wall of one side of the first air guide hose 22 is inserted on the outer wall of one side of the mounting frame 1, the air guide tube connector 11 is inserted on the outer wall of the top of the mounting frame 1, the second air guide hose 25 is inserted on the outer wall of one side of the elastic telescopic rod 28, and the outer wall of one side of the second air guide hose 25 is inserted on the outer wall of the top of the mounting frame 1; through setting up air duct interface 11, second air duct hose 25 and first air duct hose 22, the staff is connected air duct interface 11 and outside vacuum air exhaust mechanism through the trachea, and second air duct hose 25 and first air duct hose 22 are connected with air duct interface 11 through the trachea of installing frame 1 internally mounted respectively to can let outside vacuum air exhaust mechanism attract the head of baby through aspirating hole 30.

To avoid the first contact plate 17 and the arc-shaped abutment plate 16 from excessively squeezing the head of the infant; as shown in fig. 3, the outer wall of the top of the elastic telescopic rod 28 is fixed with a mounting block 23 through a screw, the outer wall of one side of the mounting block 23 is fixed with a pressure sensor 27 through a screw, the outer wall of one side of the arc-shaped abutting plate 16 is fixed with a top rod 26 through a screw, the pressure sensor 27 is electrically connected with the control panel 10, and the model of the pressure sensor 27 is MPX 4115A; through the arrangement of the elastic telescopic rod 28 and the pressure sensor 27, when the outer walls of one sides of the arc-shaped abutting plate 16 and the first contact plate 17 are in contact with the head of an infant, the arc-shaped abutting plate 16 can extrude the pressure sensor 27 through the ejector rod 26, when the pressure reaches a set value, the control panel 10 can control the three-way electric control air valve 13 to be closed, after the three-way electric control air valve 13 is closed, a worker can hardly pull the pull rod 21, the arc-shaped abutting plate 16 and the first contact plate 17 can not move forwards continuously, meanwhile, the second air bag 18 and the first air bag 15 have good buffering effect, the elastic telescopic rod 28 can be matched to avoid hard collision between the arc-shaped abutting plate 16, the first contact plate 17 and the second contact plate 19 and the head of the infant, and the overall safety of the device is improved.

In order to improve the stability of the slide plate 24 when sliding; as shown in fig. 3 and 4, the outer wall of the mounting frame 1 is provided with a guide chute 34, and the sliding plate 24 is slidably connected to the inner wall of the guide chute 34; by providing the guide runner 34, the guide runner 34 can guide the movement of the slide plate 24, and the overall stability of the slide plate 24 during movement is improved.

In order to improve the overall comfort of the arc-shaped abutting plate 16, the first contact plate 17 and the second contact plate 19; as shown in fig. 4, sponge pads 31 are respectively adhered to the outer walls of the arc-shaped abutting plate 16, the first contact plate 17 and the second contact plate 19; by arranging the sponge cushion 31, the comfort level of the arc-shaped abutting plate 16, the first contact plate 17 and the second contact plate 19 when contacting with the head of the infant can be improved, and the head of the infant can be prevented from being bruised by the arc-shaped abutting plate 16, the first contact plate 17 and the second contact plate 19.

In order to smoothly return both the second balloon 18 and the first balloon 15 to the initial state of inflation and compression; as shown in fig. 3 and 4, the outer wall of one side of the three-way electric control air valve 13 is connected with an air extraction pipe 12 through a flange; by arranging the air exhaust pipe 12, when the second air bag 18 and the first air bag 15 need to be restored to the initial state of expansion and compression for continuing to use the device next time, the worker firstly pushes the second contact plate 19 to restore the second contact plate 19, at this time, the second air bag 18 can suck the gas filled in the first air bag 15 into the second air bag 18, when the first air bag 15 is drained when the second contact plate 19 is not restored, the worker can control the three-way electric control air valve 13 to close the end connected with the air inlet pipe 14 through the control panel 10, and simultaneously open the end connected with the air exhaust pipe 12, at this time, the second air bag 18 can fill the internal gas through the air exhaust pipe 12, so that the second contact plate 19 can be restored smoothly, when the first air bag 15 is not compressed completely and the second contact plate 19 is restored, the worker can control the three-way electric control air valve 13 to close the end connected with the air injection pipe 33 through the control panel 10, while opening the end connected to the suction tube 12 and then manually pressing the first air cell 15, thereby allowing the sliding plate 24 to be smoothly restored.

In the use of the embodiment, a worker firstly aligns the second contact plate 19 of the mounting frame 1 with the head of an infant who just extends out of the lower body of the pregnant woman, then places the second contact plate 19 on one side of the head of the infant, and controls the operation of the air pumping mechanism through the control panel 10, when the air pumping mechanism operates, the arc-shaped abutting plate 16, the first contact plate 17 and the air pumping hole 30 on one side of the second contact plate 19 form negative pressure, so that the air pumping hole 30 on one side of the second contact plate 19 sucks the head of the infant, when the whole head of the infant does not move out of the lower body of the pregnant woman, the worker can suck the part extending out of the head of the infant through the second contact plate 19, meanwhile hold the mounting frame 1 with one hand, pull the pull rod 21 outwards with the other hand, so that the head of the infant is pulled outwards by the second contact plate 19, and the second contact plate 19 continuously moves towards the inside of the mounting frame 1, the second contact plate 19 can squeeze the second air bag 18 in the mounting frame 1, the air in the second air bag 18 enters the three-way electric control air valve 13 through the air injection pipe 33, at this time, the control panel 10 controls one end of one side of the three-way electric control air valve 13, which is connected with the air inlet pipe 14, to be opened, the air is filled into the first air bag 15 through the air inlet pipe 14, the first air bag 15 can push the sliding plate 24 to move forward after being expanded, so that the arc-shaped abutting plate 16 and the first contact plate 17 fixed on one side of the sliding plate 24 can be attached to the top of the head of the baby completely pulled out by the second contact plate 19, after the arc-shaped abutting plate 16 and the first contact plate 17 are attached to the top of the head of the baby completely pulled out, the control panel 10 can control the three-way electric control air valve 13 to be closed, at this time, the first air bag 15 and the second air bag 18 are in a relatively sealed state, a worker can directly pull the mounting frame 1 backwards to help pull out the whole baby from the lower torso of a pregnant woman, the arc-shaped abutting plate 16 and the first contact plate 17 can be matched with the second contact plate 19 to pull the head of the infant, so that the stress on the head of the infant is dispersed, and the head of the infant is prevented from being injured.

The staff connects the air duct interface 11 with the external vacuum air suction mechanism through the air duct, the second air duct hose 25 and the first air duct hose 22 are respectively connected with the air duct interface 11 through the air duct installed inside the installation frame 1, when the outer walls of one sides of the arc-shaped abutting plate 16 and the first contact plate 17 contact with the head of the baby, the arc-shaped abutting plate 16 can extrude the pressure sensor 27 through the ejector rod 26, when the pressure reaches a set value, the control panel 10 can control the three-way electric control air valve 13 to close, the staff can hardly pull the pull rod 21 after the three-way electric control air valve 13 is closed, the arc-shaped abutting plate 16 and the first contact plate 17 can not continue to move forwards, the second air bag 18 and the first air bag 15 have good buffer effect, and can be matched with the elastic telescopic rod 28 to avoid the hard collision of the arc-shaped abutting plate 16, the first contact plate 17 and the second contact plate 19 with the head of the baby, when the second air bag 18 and the first air bag 15 need to be restored to the initial state of expansion and compression for the next time to continue using the device, the worker firstly pushes the second contact plate 19 to restore the second contact plate 19, at this time, the second air bag 18 will withdraw the air previously filled in the first air bag 15 into the second air bag 18, when the first air bag 15 is drained when the second contact plate 19 is not restored, the worker can control the end of the three-way electric control air valve 13 connected with the air inlet pipe 14 to close through the control panel 10, and simultaneously open the end connected with the air exhaust pipe 12, at this time, the second air bag 18 can fill the air in through the air exhaust pipe 12, so that the second contact plate 19 can be restored smoothly, when the first air bag 15 is not compressed completely and the second contact plate 19 is restored, the worker can control the three-way electric control air valve 13 to close the end connected with the air injection pipe 33 through the control panel 10, while opening the end connected to the suction tube 12 and then manually pressing the first air cell 15, thereby allowing the sliding plate 24 to be smoothly restored.

Example 2:

an obstetrical fetal head suction device based on the negative pressure principle is disclosed, as shown in fig. 1 and 2, in order to enable a mounting frame 1 to rotate; the present embodiment is modified from embodiment 1 as follows: the outer wall of the mounting frame 1 is rotatably connected with a lantern ring 8, the outer wall of one side of the lantern ring 8 is fixedly provided with a fixing plate 7 through screws, the outer wall of the bottom of the fixing plate 7 is fixedly provided with a sliding sheet 20 through screws, the outer wall of the bottom of the sliding sheet 20 is slidably connected with a mounting plate 5, and the outer walls of the supporting plate 2 and one side of the fixing plate 7 are respectively provided with a threaded through hole; through setting up the lantern ring 8, fixed plate 7 and backup pad 2, thereby staff's accessible lantern ring 8 rotates the installing frame 1 and lets the device can be better pull the head of foetus, and accessible backup pad 2 comes the height adjustment to the lantern ring 8, uses the screw to fix fixed plate 7 on backup pad 2 afterwards, and backup pad 2 can slide on mounting panel 5 simultaneously, lets the position of installing frame 1 can be by convenient adjustment.

In order to improve the stability of the whole device; as shown in fig. 1, 2 and 4, a support column 4 is fixed on the outer wall of the bottom of the mounting plate 5 through a screw, a suction cup 3 is fixed on the outer wall of the bottom of the support column 4 through a screw, a guide block 35 is fixed on the outer wall of the top of the mounting plate 5 through a screw, a sliding sheet 20 is connected to the outer wall of one side of the guide block 35 in a sliding manner, an indicator light 9 is fixed on the outer wall of the lantern ring 8 through a screw, and the indicator light 9 is electrically connected with a control panel 10; through setting up support column 4 and pilot lamp 9, support column 4 can cooperate sucking disc 3 to carry out effectual support and fixed to mounting panel 5, thereby let the whole stability more of device, when not needing mounting panel 5 to support mounting frame 1, the screw that is used for fixed plate 7 can be twisted off to the staff, take off lantern ring 8 is whole from backup pad 2, avoid mounting panel 5 to hinder the work of delivering from birth, when the pressure that pressure sensor 27 received surpassed the setting value, control panel 10 also can control pilot lamp 9 and light.

This embodiment is when using, thereby staff's accessible lantern ring 8 rotates mounting frame 1 and lets the device can be better pull the head of foetus, accessible backup pad 2 comes the height adjustment to lantern ring 8, support column 4 can cooperate sucking disc 3 to carry out effectual support and fixed to mounting panel 5, thereby let the whole stability more of device, when not needing mounting panel 5 to support mounting frame 1, the screw that is used for fixed plate 7 can be twisted off to the staff, wholly take off lantern ring 8 from backup pad 2, when the pressure that pressure sensor 27 received exceeds the setting value, control panel 10 also can control pilot lamp 9 and light.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.