CN108478264A - A kind of portable midwifery device - Google Patents
A kind of portable midwifery device Download PDFInfo
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- CN108478264A CN108478264A CN201810110449.1A CN201810110449A CN108478264A CN 108478264 A CN108478264 A CN 108478264A CN 201810110449 A CN201810110449 A CN 201810110449A CN 108478264 A CN108478264 A CN 108478264A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/42—Gynaecological or obstetrical instruments or methods
- A61B17/44—Obstetrical forceps
- A61B17/442—Obstetrical forceps without pivotal connections, e.g. using vacuum
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Abstract
The invention discloses a kind of portable midwifery devices, belong to medical instruments field, it is characterised in that：Including suction nozzle device, conduit and negative pressure device；The both ends of the conduit are connected on suction nozzle device and negative pressure device, make the contact air between suction nozzle device and negative pressure device；The negative pressure device includes the tank body of cylinder, and partition board and piston are equipped in tank body；The partition board is fixed on the centre position of tank body, and tank interior is divided into two cavitys, i.e. epicoele and cavity of resorption up and down；The conduit is connected on cavity of resorption；The piston is located at upper intracavitary, and piston periphery is connect with tank inner surface air-tightness, and piston upper surface is fixedly connected with piston rod；Intracavitary is equipped with air outlet valve under tank body, and air outlet valve is connected to cavity of resorption and epicoele.Has the characteristics that adjustable constant negative pressure compared with prior art.
Description
Technical field
The present invention relates to a kind of medical instrument, especially a kind of portable midwifery device being suitable for for parturient childbirth.
Background technology
At present obstetrics to puerpera carry out newborn deliver a child without it is smooth when, medical worker often require to use midwifery dress
Help delivery of baby is set, midwifery device includes suction nozzle device and negative pressure device, so that suction nozzle device part is formed negative pressure by negative pressure device,
Fetus head is pulled by the suction function of suction nozzle device, to assist fetus output.In actual use according to puerpera and fetus
Actual conditions need to select different negative pressure values, such as the low available 40kpa negative pressure of fetal head position, fetal head position is higher or fetus
Larger, estimation childbirth difficulty person can use 60kpa negative pressure, ordinary circumstance that 50kpa negative pressure can be selected.
Negative pressure device includes Electric negative pressure attractor and the manual exhauster similar to syringe construction.It is wherein electronic negative
Press the complicated cost of attractor higher, and since it is desired that configuration power supply, is also not suitable for equipping when portable medical.And it takes out manually
Device of air can not accurately control the negative pressure value of suction nozzle device.In addition for manual exhauster, if excessively high easy pair of vacuum degree
Fetus damages, during midwifery, due to the effect of fetus hair can make to generate between suction nozzle device and fetal scalp it is small
Gap, air or amniotic fluid can be made to enter in suction nozzle device to make the negative pressure value in suction nozzle device drop by the effect in these gaps
It is low to fall off with fetal scalp so as to cause suction nozzle device, it needs to think highly of suction nozzle in new attraction fetus head, easy pair of multi-pass operation
Fetus head damages.
Invention content
The technical assignment of the present invention is to be directed to the above the deficiencies in the prior art, provides a kind of portable midwifery device.
The present invention the technical solution to solve the technical problem is that：A kind of portable midwifery device, it is characterised in that：Including inhaling
Head device, conduit and negative pressure device；The both ends of the conduit are connected on suction nozzle device and negative pressure device, are made suction nozzle device and are born
Contact air between pressure device；The negative pressure device includes the tank body of cylinder, and partition board and piston are equipped in tank body；Institute
The partition board stated is fixed on the centre position of tank body, and tank interior is divided into two cavitys, i.e. epicoele and cavity of resorption up and down；Described leads
Pipe is connected on cavity of resorption；The piston is located at upper intracavitary, and piston periphery is connect with tank inner surface air-tightness, piston upper surface
It is fixedly connected with piston rod, the tank body upper wall is equipped with piston mouth, and the piston rod is stretched out out of piston mouth, piston rod
Upper end is fixedly connected with piston handle；Intracavitary is equipped with air outlet valve under tank body, and air outlet valve is connected to cavity of resorption and epicoele；The air outlet valve packet
Include No. two holes, No. three springs, No. four springs, No. three cylinders and No. four cylinders；No. two holes are horizontal stepped holes, including
Inner segment, stage casing and outer segment, the wherein internal diameter of middle section are less than the internal diameter at inner segment and outer segment；The inner end in No. two holes is equipped with No. two
Bolt is equipped with axle center hole at described No. two bolt axle center, for ventilating；No. three springs be located at No. two holes close to interior
The position at end, described No. three cylinders include successively from inside to outside interior end cap, thin segment, thick section and outer end cap, wherein No. three cylinders
Thick section part is located at the middle section in No. two holes, and No. three cylinder thin segments and interior end cap are distinguished at the inner segment in No. two holes, and outer end cap is located at
At the outer segment in No. two holes, the both ends of No. three springs are withstood on respectively on No. two bolts and No. three cylinders, and the middle section in No. two holes is equipped with
The upper and lower ends of vertical venthole, the venthole are respectively communicated with epicoele and No. two holes, and No. two holes middle section is located at ventilation
The position at the inside and outside both ends of hole under shed is respectively equipped with sealing ring, wherein the distance between the two described sealing rings are more than No. three
The length of cylinder thin segment；The interior end cap of No. three cylinders and the diameter of outer end cap are more than the internal diameter of No. two holes stage casing part,
To prevent No. three cylinder shift positions excessive；No. four springs are located at the outside of No. three cylinders, wherein No. three springs
Elastic force is more than the elastic force of No. four springs；No. four cylinders are located at the outside of No. four springs, and the both ends of No. four springs withstand on No. three respectively
On cylinder and No. four cylinders, the outer end of No. four cylinders is stretched out from No. two holes；The outer end of the air outlet valve is equipped with knob, described
Knob includes knob wall, joystick knob and rotary knob rod, and the inner end portion of the knob is columnar knob wall construction, described
Knob wall inner face in cylindrical screw it is linear, the outer end of No. four cylinders is withstood on the inner face of knob wall；Knob
At the axle center of wall be equipped with rotary knob rod, the tank body be equipped with rotary knob rod be adapted knob hole, the rotary knob rod it is interior
End is inserted into knob hole, and knob spring is cased on rotary knob rod；The outer end of knob is joystick knob structure；The knob wall position
In in the structure of indent on tank body, which forms a cavity；End cover structure is equipped at knob；Hole is equipped at end cap, it should
The diameter in hole is less than the diameter of knob wall, and the end cap is located at the outside of knob wall, and joystick knob is stretched out out of ending cover hole；Institute
The piston rod periphery stated is equipped with one or more spring leafs, and the upper end of the spring leaf is fixedly connected with the upper end of piston rod,
The lower end of spring leaf tilts outward；The diameter of the piston mouth of tank body upper wall is more than the diameter of piston rod, in piston mouth and work
A gap is formed between stopper rod, the width in the gap is more than the thickness of spring leaf, is less than the distance that spring leaf lower end tilts.
Compared with prior art, the present invention has advantageous effect following prominent：
1, different vacuum degrees can be set so as to the different puerperas preferably adapted to；
2, epicoele and air outlet valve have collectively constituted vacuum compensation mechanism, the air for entering lower intracavitary can be discharged to epicoele
It is interior, it ensure that the vacuum degree of lower intracavitary is constant；
It 3, being capable of its position of automatic locking when piston is moved to upper end.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention.
Fig. 2 is the negative pressure device internal structure schematic diagram in the embodiment of the present invention 1.
Fig. 3 is knob structure schematic diagram of the present invention.
Fig. 4 is close-up schematic view in Fig. 2.
Fig. 5 is the negative pressure device internal structure schematic diagram in the embodiment of the present invention 2.
Fig. 6 is close-up schematic view in Fig. 5.
Specific implementation mode
The present invention is further described with specific implementation mode with reference to the accompanying drawings of the specification.For ease of narration, it is set in
It is outer end close to one end of knob 14, opposite direction is interior in air outlet valve 15.
In embodiment 1, as shown in Figure 1, the present invention includes suction nozzle device 5, conduit 4 and negative pressure device.The two of the conduit 4
End is connected on suction nozzle device 5 and negative pressure device, makes the contact air between suction nozzle device 5 and negative pressure device.
As shown in Figure 2,4, the negative pressure device includes cylindrical tank body 17, and partition board 10 and piston are equipped in tank body 17
8.The partition board 10 is fixed on the centre position of tank body 17, and two cavitys, i.e. 9 He of epicoele up and down will be divided into inside tank body 17
Cavity of resorption 11.The conduit 4 is connected on cavity of resorption.The piston 8 is located in epicoele 9,8 periphery of piston and 17 inner surface of tank body
Air-tightness connects, and 8 upper surface of piston is fixedly connected with piston rod 2, and 17 upper wall of tank body is equipped with piston mouth 6, the work
Stopper rod 2 is stretched out out of piston mouth 6, and the upper end of piston rod 2 is fixedly connected with piston handle 1.Piston is pushed by about 1 piston handle
8 can change the air pressure of 17 intracavitary of tank body.
Air outlet valve 15 is equipped in tank body cavity of resorption 11, air outlet valve 15 is connected to cavity of resorption 11 and epicoele 9, and its role is to make cavity of resorption 11
Interior air flows in epicoele 9, and the air pressure in cavity of resorption 11 is made to reduce.
As shown in figure 4, the air outlet valve 15 includes No. two cylinders 39 of spring 32, three of spring 27, four of hole 40, three
With No. four cylinders 33.No. two holes 40 are horizontal stepped hole, including inner segment, stage casing and outer segment, and wherein middle section is interior
Diameter is less than the internal diameter at inner segment and outer segment.The inner end in No. two holes 40 is equipped with No. two bolts 26, described No. two 26 axle center of bolt
Place is equipped with axle center hole, for ventilating.No. three springs 27 are located at the position of the close inner end in No. two holes 40, described No. three
Cylinder 39 includes successively from inside to outside interior end cap 28, thin segment 29, thick section 30 and outer end cap 31, wherein thick 30 part of section of No. three cylinders
Middle section positioned at No. two holes 40, No. three cylinder thin segments 29 and interior end cap 28 are distinguished at the inner segment in No. two holes 40, outer end cap 31
At the outer segment in No. two holes 40, the both ends of No. three springs 27 are withstood on respectively on No. two bolts 26 and No. three cylinders 39, No. two holes 40
Middle section be equipped with vertical venthole 16, the upper and lower ends of the venthole 16 are respectively communicated with epicoele 9 and No. two holes 40, two
The position at the inside and outside both ends that number 40 middle section of hole is located at 16 under shed of venthole is respectively equipped with sealing ring 34, wherein described two
The distance between sealing ring 34 is more than the length of No. three cylinder thin segments 29, passes through No. three cylinders 39, sealing ring 34 and piston 8
Epicoele 9 is fully sealed collective effect.The interior end cap 28 of No. three cylinders 39 and the diameter of outer end cap 31 are more than No. two
The internal diameter of 40 stage casing part of hole, to prevent No. three 39 shift positions of cylinder excessive.No. four springs 32 are located at No. three
The outside of cylinder 39, wherein the elastic force of No. three springs 27 is more than the elastic force of No. four springs 32.No. four cylinders 33 are located at No. four springs
The both ends in 32 outside, No. four springs 32 are withstood on respectively on No. three cylinders 39 and No. four cylinders 33, the outer ends of No. four cylinders 33 from
No. two holes 40 are stretched out.
Assuming that the elastic force of 27, No. four springs 32 of No. three springs is F3, F4 respectively, the section face at the thick section of No. three cylinders 30
Product S2.When nature, No. three springs 27 are more than elastic force of No. four springs 32 to No. three cylinders 39 to the elastic force of No. three cylinders 39,
Therefore end cap 28 withstands on the junction between No. two 40 inner segments of hole and stage casing in No. three cylinders 39；At this time due to No. three cylinder thin segments
29 are located at the stage casing in No. two holes 40, and No. three cylinders 39 can not form sealing to the middle section in No. two holes 40, so outlet at this time
Valve 15 is in the open state, can be connected to by air outlet valve 15 between epicoele 9 and cavity of resorption 11, the air between epicoele 9 and cavity of resorption 11
It can free dealing.After air pressure reduces in cavity of resorption 11, since the air pressure that No. three 39 inner ends of cylinder are subject to is less than what outer end was subject to
Air pressure, after air pressure is less than certain value in cavity of resorption 11, atmospheric pressure overcomes the elastic force of spring to push No. three cylinders 39 inwardly,
The thick section of No. three cylinders 30 is fully located at the middle section in No. two holes 40, by No. three cylinders thick section 30 that the stage casing in No. two holes 40 is complete
It is hermetically sealed live, air outlet valve 15 is closed at this time, and the air between epicoele 9 and cavity of resorption 11 has been blocked to flow.Actually make
It is less than the air pressure of cavity of resorption 11 with the air pressure of epicoele 9 in the process, therefore air outlet valve 15 is played the role of being the gas in cavity of resorption 11
Pressure is more than the opening of air outlet valve 15 after certain value, and the air in cavity of resorption 11 enters in epicoele 9, when the air pressure in cavity of resorption 11 is less than
After the value, air outlet valve 15 is closed.The atmospheric pressure value in cavity of resorption 11 is P2=P0- (F3-F4)/S2 at this time, that is, passes through air outlet valve 15
Effect makes the air pressure in cavity of resorption 11 be consistently less than P2.
As shown in Figure 2,3, 4, the outer end of the air outlet valve 15 be equipped with knob 14, the knob include knob wall 35,
The inner end portion of joystick knob 36 and rotary knob rod 37, the knob 14 is columnar 35 structure of knob wall, the knob
The inner face of wall 35 is linear in cylindrical screw, and the outer end of No. four cylinders 33 is withstood on the inner face of knob wall 35, rotation
Knob 14 so as to adjust the position of No. four cylinders 33, and then can adjust the decrement of No. four springs 32；Knob wall 35
Axle center at be equipped with rotary knob rod 37, the tank body 17 be equipped with rotary knob rod 37 be adapted knob hole (do not show in attached drawing
Go out), the inner end of the rotary knob rod 37 is inserted into knob hole, and knob spring 38 is cased on rotary knob rod 37, passes through knob spring
38 effect knob 14 pushes up outward.The outer end of knob 14 is 36 structure of joystick knob, is used for turn knob 14.The knob wall
35 are located on tank body 17 in the structure of indent, which forms a cavity.13 structure of end cap is equipped at knob 14, it is described
End cap 13 is connected by screw thread, screw or other connection types commonly used in the prior art with tank body 17, and tank body 17 is equipped with
The connection structures such as screw thread, the screw hole adaptable with it.Hole is equipped at end cap 13, the diameter in the hole is less than the straight of knob wall 35
Diameter, the end cap 13 are located at the outside of knob wall 35, and joystick knob 36 is stretched out out of ending cover hole.Limitation is played by end cap 13
The effect of 14 position of knob, prevents knob 14 from being ejected outward by spring.The end cap 13 is marked with scale, the knob hand
Handle 36 is equipped with the label for being directed toward scale.Turn knob handle 36, the scale corresponding to label by joystick knob 36
The numerical value of air pressure set in tank body cavity of resorption 11 can be read.
No. four cylinders 33 can be made to move inwardly or outward by the effect of knob 14, and then No. four springs can be made
32 compressions or release, so as to change the elastic force that No. four springs 32 generate corresponding cylinder, the i.e. size of F4, due to P2=
P0- (F3-F4)/S2, therefore after knob 14 makes No. four springs 32 discharge along a direction rotation, the value of F4 reduces, by upper
It states formula and can be seen that the value of P2 also reduces therewith, therefore knob 14 is played the role of being the air pressure reduced in cavity of resorption 11；When
When knob 14 rotates in opposite direction, the value of F4 increases, and P2 values are consequently increased, thus knob 14 played the role of be
Increase the air pressure in cavity of resorption 11.So can play the role of adjusting air pressure in cavity of resorption 11 by knob 14.
As shown in Figure 1, 2,2 periphery of piston rod is equipped with one or more spring leafs 3, the spring leaf 3 it is upper
End is fixedly connected with the upper end of piston rod 2, and the lower end of spring leaf 3 tilts outward.The diameter of the piston mouth 6 of 17 upper wall of tank body is more than
The diameter of piston rod 2, to form a gap between piston mouth 6 and piston rod 2, the width in the gap is more than spring leaf 3
Thickness is less than the distance that 3 lower end of spring leaf tilts, to which after depressing spring leaf 3, piston rod 2 and spring leaf 3 can be suitable
Profit discrepancy piston mouth 6, after pulling out piston rod 2 fully upward, 3 lower end of spring leaf tilts outward, thus will by spring leaf 3
Piston rod 2 blocks.
Piston rod 2 is pulled out upwards by piston handle 1 when use, while spring leaf 3 being pulled out out of tank body 17, is drawn
Go out rear spring leaf 3 to tilt outward, so as to block the position of piston rod 2；Spring leaf 3 is pressed with hand after use, together
When push down on piston handle 1, so as to promote in tank body 17 piston rod 2 and spring leaf 3 out of piston mouth 6, realize multiple
Position.
Working principle of the invention is as follows：Piston 8 is pushed down on to bottommost first when use, by suction nozzle device of the present invention
5 are placed on the head of fetus, pull piston 8 then up, 9 part of epicoele below piston 8 can form negative pressure.Just start
When, air outlet valve 15 is opened, and the air in suction nozzle device 5 is entered by cavity of resorption 11 in epicoele 9, and the air pressure then in suction nozzle device 5 is gradual
It reduces, after atmospheric pressure value is less than P2, air outlet valve 15 is closed.Medical staff can be according to the concrete condition knob 14 of fetus and puerpera
The atmospheric pressure value in suction nozzle device 5 is adjusted, when atmospheric pressure value to be turned up, the elastic force F2 of No. two springs 25 increases, and P1 values increase therewith, when
After P1 values are more than the actual pressure value in cavity of resorption 11, intake valve 12 automatically opens, and external air is entered by intake valve 12
In cavity of resorption 11 and suction nozzle device 5, the atmospheric pressure value in suction nozzle device 5 increases, and intake valve 12 is automatically closed after being more than P1.By one section
After time, if suction nozzle device 5 occurs a little gas leakage or leakage amniotic fluid and the air pressure in suction nozzle device 5 can be caused to increase, when the atmospheric pressure value is more than
After P2, air outlet valve 15 automatically opens, and the air pressure in epicoele 9 at this time is less than the air pressure in cavity of resorption 11, and the air in cavity of resorption 11 enters
Into epicoele 9, the air pressure in cavity of resorption 11 reduces, and after being less than P2, air outlet valve 15 is automatically closed.
Different vacuum degrees can be set through the invention so as to the different situations preferably adapted to puerpera and tire
Youngster.Epicoele 9 and air outlet valve 15 have collectively constituted vacuum compensation mechanism, can either adjust the negative pressure value of suction nozzle device 5 and can keep again
Negative pressure value is constant.Piston 8 when being moved to upper end can its position of automatic locking, prevent it from moving down and air pressure in epicoele 9 caused to increase.
In embodiment 2, as shown in Figure 5,6, the present embodiment is in addition to including in embodiment 1 and other than technical characteristic, further including
Intake valve 12.It for ease of narration, is set in intake valve 12, is outer end close to one end of knob 14, opposite direction is interior.
The intake valve 12 is located in tank body cavity of resorption 11 close to the position of air outlet valve 15.Intake valve 12 is connected to cavity of resorption 11
Outside tank body 17, its role is to make extraneous air enter in cavity of resorption 11 air pressure in cavity of resorption 11 is made to increase.
As shown in fig. 6, the intake valve 12 includes No.1 hole 21, No.1 spring 20, No. two springs 24, No.1 cylinders 22
With No. two cylinders 25.The No.1 hole 21 is interior thick outer thin horizontal steps hole, and the inner end in No.1 hole 21 is equipped with No.1 spiral shell
Bolt 19 is equipped with axle center hole at 19 axle center of No.1 bolt, for ventilating.The No.1 spring 20 is located at No.1 hole 21
Position close to inner end, No.1 cylinder 22 are located at the outside of No.1 spring 20, and the both ends of No.1 spring 20 withstand on No.1 spiral shell respectively
On bolt 19 and No.1 cylinder 22, the diameter of No.1 cylinder 22 is more than the diameter at 21 outside thin segment of No.1 hole, to No.1 cylinder
22 outer ends withstand on the junction between 21 thick section of No.1 hole and thin segment, and the outer end face of No.1 cylinder 22 is equipped with sealing ring 23, to
The thin segment in No.1 hole 21 can be sealed up by No.1 cylinder 22.No. two springs 24 are located at the outer of No.1 cylinder 22
Side, the wherein elastic force of No.1 spring 20 are more than the elastic force of No. two springs 24, and No. two cylinders 25 are located at the outside of No. two springs 24,
The both ends of No. two springs 24 are withstood on respectively on No.1 cylinder 22 and No. two cylinders 25, and the outer end of No. two cylinders 25 is out of No.1 hole 21
It stretches out, the diameter of No. two cylinders 25 is less than the diameter at 21 outside thin segment of No.1 hole, in order to ventilate.
No. two 25 outer ends of cylinder and the outer end of described No. four cylinders 33 are withstood on the inner face of knob wall 35 simultaneously, are rotated
Knob 14, so as to adjust the position of No. two cylinders 25 and No. four cylinders 33, so as to adjust No. two springs 24 and No. four
The decrement of spring 32.
Assuming that the elastic force of 20, No. two springs 24 of No.1 spring is F1, F2 respectively, the area of section S1 of 21 thin segment of No.1 hole,
Atmospheric pressure is P0.When nature, No.1 spring 20 is more than No. two springs 24 to No.1 cylinder to the elastic force of No.1 cylinder 22
22 elastic force, therefore 22 outer end of No.1 cylinder withstands on the junction between 21 thick section of No.1 hole and thin segment, at this time at intake valve 12
In closed state；After air pressure reduces in cavity of resorption 11, since the air pressure that 22 inner end of No.1 cylinder is subject to is less than the gas that outer end is subject to
Pressure, after air pressure is less than certain value in cavity of resorption 11, atmospheric pressure overcomes the elastic force of spring to push No.1 cylinder 22 inwardly,
Intake valve 12 is in the open state at this time, to make air enter in cavity of resorption 11 from intake valve 12, makes the air pressure liter in cavity of resorption 11
Height prevents from damaging fetus since vacuum degree is excessively high in cavity of resorption 11.The atmospheric pressure value in cavity of resorption 11 is P1=P0- (F1- at this time
F2)/S1 makes the air pressure in cavity of resorption 11 be consistently greater than P1 by the effect of intake valve 12.
So that the air pressure in cavity of resorption 11 is more than P1 by the effect of intake valve 12, is made in cavity of resorption 11 by the effect of air outlet valve 15
Air pressure be less than P2, it is therefore necessary to meet P1<P2, i.e. P0- (F1-F2)/S1<P0- (F3-F4)/S2, after inequality simplifies
It is exactly (F1-F2)/S1 ＞ (F3-F4)/S2.
It can make No. two cylinders 25 and No. four cylinders 33 by the effect of knob 14 while move inwardly or outward, into
And No. two springs 24 and No. four compressions of spring 32 or release can be made, it is right so as to change No. two springs 24 and No. four springs 32
The elastic force that corresponding cylinder generates, i.e. the size of F2 and F4, due to P1=P0- (F1-F2)/S1, P2=P0- (F3-F4)/S2, because
After knob 14 makes No. two springs 24 and No. four springs 32 discharge along a direction rotation, the value of F2 and F4 reduce, by upper for this
It states two formula and can be seen that the value of P1 and P2 also reduces therewith, therefore knob 14 played the role of being reduced in cavity of resorption 11
Air pressure；When knob 14 rotates in opposite direction, the value of F2 and F4 increase, P1 and P2 values are consequently increased, therefore knob 14
Played the role of being the air pressure increased in cavity of resorption 11.So the work for adjusting air pressure in suction nozzle device 5 can be played by knob 14
With.
In use, medical staff can pass through the air pressure in the setting suction nozzle of knob 14 device 5 according to the situation of puerpera and fetus
Value, when atmospheric pressure value to be turned up, the elastic force F2 of No. two springs 24 increases, and P1 values increase therewith, when P1 values are more than in cavity of resorption 11
After actual pressure value, intake valve 12 automatically opens, and external air is entered by intake valve 12 in cavity of resorption 11, in cavity of resorption 11
Atmospheric pressure value increases, and intake valve 12 is automatically closed after being more than P1.After fetal birth, knob 14 is inwardly pushed, passes through two
Number cylinder 25 inwardly pushes No. two springs 24, and the decrement of No. two springs 24 increases, and elastic force also increases therewith, passes through No. two
The elastic force effect of spring 24 pushes No.1 cylinder 22 inwardly, and intake valve 12 is opened, and extraneous air enters in cavity of resorption 11, directly
It is balanced to the air pressure in lower suction nozzle device 5 with atmospheric pressure, you can remove suction nozzle device 5 from newborn's head.
It can be directed to different puerperas through the invention, suitable negative pressure value is set.Epicoele 9 and air outlet valve 15 collectively constitute
Vacuum compensation mechanism, ensure that the vacuum degree in suction nozzle device 5 is constant, so as to prevent suction nozzle device 5 from falling off from fetus head.
Piston 8 when being moved to upper end can its position of automatic locking, prevent it from moving down and air pressure in epicoele 9 caused to increase.
It should be noted that the present invention particular embodiment to the present invention have been described in detail, for ability
For the technical staff in domain, its various of progress is obviously changed without departing from the spirit and scope of the present invention
Become all within protection scope of the present invention.
Claims (1)
1. a kind of portable midwifery device, it is characterised in that：Including suction nozzle device, conduit and negative pressure device；The two of the conduit
End is connected on suction nozzle device and negative pressure device, makes the contact air between suction nozzle device and negative pressure device；The negative pressure
Device includes the tank body of cylinder, and partition board and piston are equipped in tank body；The partition board is fixed on the centre position of tank body, by tank
Internal body portion is at upper and lower two cavitys, i.e. epicoele and cavity of resorption；The conduit is connected on cavity of resorption；The piston is located at epicoele
Interior, piston periphery is connect with tank inner surface air-tightness, and piston upper surface is fixedly connected with piston rod, is set on the tank body upper wall
There are piston mouth, the piston rod to be stretched out out of piston mouth, the upper end of piston rod is fixedly connected with piston handle；Intracavitary is set under tank body
There are air outlet valve, air outlet valve to be connected to cavity of resorption and epicoele；The air outlet valve includes No. two holes, No. three springs, No. four springs, No. three columns
Body and No. four cylinders；No. two holes are horizontal stepped hole, including inner segment, stage casing and outer segment, the wherein internal diameter of middle section
Less than the internal diameter at inner segment and outer segment；The inner end in No. two holes is equipped with No. two bolts, and axis is equipped at described No. two bolt axle center
Heart hole, for ventilating；No. three springs are located at the position of the close inner end in No. two holes, and described No. three cylinders are from inside to outside
Include interior end cap, thin segment, thick section and outer end cap successively, wherein the thick section part of No. three cylinders is located at the middle section in No. two holes, No. three
Cylinder thin segment and interior end cap are distinguished at the inner segment in No. two holes, and outer end cap is located at the outer segment in No. two holes, the both ends point of No. three springs
Do not withstand on No. two bolts and No. three cylinders, the middle section in No. two holes is equipped with vertical venthole, the venthole up and down
Both ends are respectively communicated with epicoele and No. two holes, and the position that No. two holes middle section is located at the inside and outside both ends of venthole under shed is respectively equipped with
Sealing ring, wherein the distance between the two described sealing rings are more than the length of No. three cylinder thin segments；No. three cylinders
The diameter of interior end cap and outer end cap is more than the internal diameter of No. two hole stage casings part, to prevent No. three cylinder shift positions excessive；Institute
No. four springs stated are located at the outside of No. three cylinders, wherein the elastic force of No. three springs is more than the elastic force of No. four springs；No. four cylinders
Positioned at the outside of No. four springs, the both ends of No. four springs are withstood on respectively on No. three cylinders and No. four cylinders, the outer end of No. four cylinders
It is stretched out from No. two holes；The outer end of the air outlet valve is equipped with knob, and the knob includes knob wall, joystick knob and knob
The inner end portion of bar, the knob is columnar knob wall construction, and the inner face of the knob wall is in circular helix
The outer end of shape, described No. four cylinders is withstood on the inner face of knob wall；Rotary knob rod, the tank are equipped at the axle center of knob wall
Body is equipped with the knob hole being adapted with rotary knob rod, and the inner end of the rotary knob rod is inserted into knob hole, is cased on rotary knob rod
Knob spring；The outer end of knob is joystick knob structure；The knob wall is located on tank body in the structure of indent, the indent knot
It is configured to a cavity；End cover structure is equipped at knob；Hole is equipped at end cap, the diameter in the hole is less than the diameter of knob wall, described
End cap be located at the outside of knob wall, joystick knob is stretched out out of ending cover hole；The piston rod periphery is equipped with one or more
Spring leaf, the upper end of the spring leaf are fixedly connected with the upper end of piston rod, and the lower end of spring leaf tilts outward；Tank body upper wall
The diameter of piston mouth be more than the diameter of piston rod, to forming a gap, the width in the gap between piston mouth and piston rod
Degree is less than the distance that spring leaf lower end tilts more than the thickness of spring leaf.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810110449.1A CN108478264B (en) | 2018-02-05 | 2018-02-05 | Portable midwifery device |
| CN202010739932.3A CN111920498B (en) | 2018-02-05 | 2018-02-05 | Pressure-adjustable obstetric apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810110449.1A CN108478264B (en) | 2018-02-05 | 2018-02-05 | Portable midwifery device |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010739932.3A Division CN111920498B (en) | 2018-02-05 | 2018-02-05 | Pressure-adjustable obstetric apparatus |
Publications (2)
| Publication Number | Publication Date |
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| CN108478264A true CN108478264A (en) | 2018-09-04 |
| CN108478264B CN108478264B (en) | 2020-09-25 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010739932.3A Active CN111920498B (en) | 2018-02-05 | 2018-02-05 | Pressure-adjustable obstetric apparatus |
| CN201810110449.1A Expired - Fee Related CN108478264B (en) | 2018-02-05 | 2018-02-05 | Portable midwifery device |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010739932.3A Active CN111920498B (en) | 2018-02-05 | 2018-02-05 | Pressure-adjustable obstetric apparatus |
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| Country | Link |
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| CN (2) | CN111920498B (en) |
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| CN206534697U (en) * | 2016-11-25 | 2017-10-03 | 郭鹏 | Midwifery fetal head suction device |
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| CN2064234U (en) * | 1990-04-06 | 1990-10-24 | 成都科技大学 | Pocket infusion device having stable pressure and automitic cut-off function |
| US8512301B2 (en) * | 2005-02-08 | 2013-08-20 | Feng Ma | Canned vacuum |
| CN100582533C (en) * | 2007-12-29 | 2010-01-20 | 北京谊安医疗系统股份有限公司 | Pneumatic control proportioning time-delay change valve |
| JP6087573B2 (en) * | 2012-10-23 | 2017-03-01 | キヤノン株式会社 | Processing apparatus and article manufacturing method using the same |
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- 2018-02-05 CN CN202010739932.3A patent/CN111920498B/en active Active
- 2018-02-05 CN CN201810110449.1A patent/CN108478264B/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0198708A2 (en) * | 1985-04-15 | 1986-10-22 | Nippon Tansan Gas Co., Ltd. | Portable oxygen inhaler |
| CN102428235A (en) * | 2009-04-03 | 2012-04-25 | 株式会社酉岛制作所 | Control device for vacuum valve |
| CN201439836U (en) * | 2009-06-05 | 2010-04-21 | 佛山市肯富来安德里兹泵有限公司 | Vacuum regulating valve capable of automatically regulating opening of valve |
| CN203341804U (en) * | 2013-07-16 | 2013-12-18 | 江苏康诺医疗器械有限公司 | Obstetric apparatus |
| CN203770088U (en) * | 2014-01-02 | 2014-08-13 | 干平 | Pneumatic energy-saving gas inlet valve |
| CN106051245A (en) * | 2016-06-30 | 2016-10-26 | 江苏金荣森制冷科技有限公司 | Adjustable piston type bidirectional pressure relief valve |
| CN206534697U (en) * | 2016-11-25 | 2017-10-03 | 郭鹏 | Midwifery fetal head suction device |
| CN106618693A (en) * | 2016-11-28 | 2017-05-10 | 天津代双科技有限公司 | Obstetric device used for mechatronical delivery |
| CN206641700U (en) * | 2017-01-04 | 2017-11-17 | 项巧英 | Squash type vacuum extractor |
| CN107049446A (en) * | 2017-06-20 | 2017-08-18 | 柳荣华 | Vacuum extractor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111920498A (en) | 2020-11-13 |
| CN111920498B (en) | 2021-07-02 |
| CN108478264B (en) | 2020-09-25 |
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Inventor after: Liu Yajun Inventor after: Wang Miaomiao Inventor after: Li Wenting Inventor after: Miao Hailong Inventor after: Zhao Zicheng Inventor after: Song Yan Inventor after: Zhou Xu Inventor before: Miao Hailong Inventor before: Zhao Zicheng Inventor before: Song Yan Inventor before: Zhou Xu |
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Effective date of registration: 20200828 Address after: 266000 Huangdao, Qingdao Province, No. five mountain road, No. 1677, No. Applicant after: THE AFFILIATED HOSPITAL OF QINGDAO University Address before: 276826 Yantai Road, Donggang District, Rizhao City, Shandong Province, No. 169 Applicant before: RIZHAO XUANYI INFORMATION TECHNOLOGY Co.,Ltd. |
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Granted publication date: 20200925 Termination date: 20210205 |