阅读说明：本技术 一体式宫口和胎头位置测量装置 (Integrated uterine orifice and fetal head position measuring device ) 是由 谢倩 于 2021-01-15 设计创作，主要内容包括：本发明公开了一种一体式宫口和胎头位置测量装置,包括窥阴器组件,该窥阴器组件包括相互配合的两个叶片,两个叶片的尾端之间相互铰接以形成卵圆孔,卵圆孔内可拆卸地设有测量杆座,测量杆座上滑动设置有进深尺,测量杆座上还滑动设置有光源调节棒,在该光源调节棒上设置有宫口测量光源,该宫口测量光源发出的光束中心线与所述卵圆孔的中心线重合,该宫口测量光源发出的光束沿着固定的出射角射出,进深尺上设有第一进深刻度,光源调节棒上设有第二进深刻度。本发明的有益效果：能够同时测量胎头位置和宫口大小,由于采用非撑开的方式测量宫颈口自然大小,测得的宫颈开口数据更为真实可靠,并降低测量不适。(The invention discloses an integrated uterine orifice and fetal head position measuring device which comprises a vaginal speculum assembly, wherein the vaginal speculum assembly comprises two blades which are matched with each other, the tail ends of the two blades are hinged with each other to form an oval hole, a measuring rod seat is detachably arranged in the oval hole, a depth scale is arranged on the measuring rod seat in a sliding manner, a light source adjusting rod is further arranged on the measuring rod seat in a sliding manner, a uterine orifice measuring light source is arranged on the light source adjusting rod, the central line of a light beam emitted by the uterine orifice measuring light source is overlapped with the central line of the oval hole, the light beam emitted by the uterine orifice measuring light source is emitted along a fixed emergent angle, a first depth scale is arranged on the depth scale, and a second depth scale is arranged on the light source adjusting rod. The invention has the beneficial effects that: the fetal head position and the cervical orifice size can be measured simultaneously, and the cervical opening data measured by the method of non-opening is more real and reliable and the measurement discomfort is reduced due to the fact that the natural size of the cervical orifice is measured in a non-opening mode.)

1. The utility model provides an integral type palace mouth and fetal head position measuring device, is including peeping the female ware subassembly, should peep the female ware subassembly and include two blades of mutually supporting, be fixed blade (41) and rotating vane (42) respectively, hinge each other between the tail end of two blades in order to form the oval hole, the tail end of two blades is connected with handle (43) respectively, the front end of two blades is equipped with duckbilled, its characterized in that respectively:

a measuring rod seat is detachably arranged in the oval hole, and an observation hole is reserved between the measuring rod seat and the inner wall of the oval hole;

a rod-shaped depth scale (31) is arranged on the measuring rod seat in a sliding manner, the depth scale (31) is arranged along the extending direction of the fixed blade (41), and the depth scale (31) deviates from the fixed blade (41);

a light source adjusting rod (21) is further arranged on the measuring rod seat in a sliding mode, the light source adjusting rod (21) is arranged in parallel to the depth ruler (31), a palace mouth measuring light source (22) is arranged on the light source adjusting rod (21), the central line of a light beam emitted by the palace mouth measuring light source (22) is overlapped with the central line of the oval hole, the light beam emitted by the palace mouth measuring light source (22) is emitted along a fixed emergent angle, and the emergent angle is an acute angle;

a first depth scale is arranged on the depth scale (31), and a second depth scale is arranged on the light source adjusting rod (21);

the end part of the duckbilled is provided with abdication gaps corresponding to the depth ruler (31) and the uterine opening measuring light source (22).

2. The integrated uterine orifice and fetal head position measuring device of claim 1, wherein: the front end of the depth gauge (31) is fixedly provided with an elastic abutting gasket (32).

3. The integrated uterine orifice and fetal head position measuring device of claim 1, wherein: the light emergence angle of the uterine opening measuring light source (22) is 40-90 degrees.

4. The integrated uterine orifice and fetal head position measuring device of claim 3, wherein: the light exit angle of the uterine opening measuring light source (22) is 60 degrees.

5. The integrated ostium and fetal head position measurement device of claim 1, 3, or 4, wherein: the diameter of the exit point of the light beam emitted by the uterine opening measuring light source (22) is 4-6 mm.

6. The integrated ostium and fetal head position measurement device of claim 1, 3, or 4, wherein: the uterine opening measuring light source (22) is an LED light source with a convex lens.

7. The integrated ostium and fetal head position measurement device of claim 1, 3, or 4, wherein: the uterine orifice measuring light source (22) comprises an LED lamp, a conical light guide cylinder is arranged outside the LED lamp, the LED is positioned in the small-diameter end of the light guide cylinder, and the large-diameter end of the light guide cylinder faces the duckbill direction.

8. The integrated uterine orifice and fetal head position measuring device of claim 1, wherein: the section of the fixed blade (41) is arc-shaped groove-shaped;

the measuring rod seat comprises two supports (10) which are respectively a first support and a second support, and the first support and the second support are arranged along the length direction of the fixed blade (41) and are fixedly connected through a connecting plate (12);

each support (10) is provided with a support ring sleeve (14), the two support ring sleeves (14) are arranged on the same center line, and the same depth ruler (31) is arranged in the two support ring sleeves (14) in a sliding and penetrating mode;

each support (10) is further provided with a supporting slide block (16), and the two supporting slide blocks (16) are provided with the same light source adjusting rod (21) in a sliding manner.

9. The integrated uterine orifice and fetal head position measuring device of claim 8, wherein: the support (10) comprises an arc-shaped plate (11) matched with the inner wall of the fixed blade (41), the support ring sleeve (14) is arranged in the arc-shaped plate (11), and at least two support columns (15) arranged in the radial direction are fixedly connected between the support ring sleeve (14) and the inner wall of the arc-shaped plate (11);

the arc-shaped plates (11) of the two supports (10) are fixedly connected through a connecting plate (12);

each supporting ring sleeve (14) is further fixedly provided with a supporting slide block (16), the supporting slide blocks (16) are located on the outer walls, back to the fixed blades (41), of the supporting ring sleeves (14), and sliding grooves are formed in the light source adjusting rods (21) corresponding to the supporting slide blocks (16).

10. The integrated uterine orifice and fetal head position measuring device of claim 8, wherein: and a limit stop (13) is arranged on the first support corresponding to the tail end of the fixed blade (41).

Technical Field

The invention belongs to the field of medical instruments of obstetrics and gynecology department, and particularly relates to an integrated uterine orifice and fetal head position measuring device.

Background

In the process of the pregnant woman, along with the progress of the labor process, the cervical orifice is gradually opened, the head of the fetus gradually descends, and the doctor and the midwife judge the production process according to the gradual opening. For observing the size of the uterine orifice and the position of the fetal head, the most widely used method in clinic is rough judgment by a palpation method. The doctor or midwife puts fingers into the birth canal, can hold several fingers according to the uterine orifice, and uses several finger widths as the division standard of the size of the uterine orifice. The fetal head position is determined by taking the position of the ischial tuberosity as a determination reference and roughly determining the descending degree of the fetal head according to the length of fingers between the fetal head and the ischial tuberosity. However, the above method is not highly accurate because: firstly, the method for judging according to the finger width or the knuckle length is very rough; secondly, the uterine neck tissue mainly depends on personal experience of doctors or midwives, however, the elasticity of the uterine neck tissue is large, the size of the stretched uterine neck is often measured by finger stretching detection, and the size of the uterine neck in a natural state is difficult to measure, so that the size deviation of the uterine neck obtained by different people is large. These all affect the judgment of the birth process and the medical decision of the doctor, and are very inconvenient and the comfort of the pregnant woman is poor.

Aiming at the problem of inaccurate finger detection, Chinese patent No. CN201811635706.X discloses a cervical dilation size measuring instrument, wherein two dilation pieces controlled by a push rod form a measuring device, and the two dilation pieces extend into the inner wall of a cervical orifice for measurement. Chinese patent documents CN201822273853.9 and cn201811635706.x also use open devices to measure the opening size of the cervical orifice based on similar principles. Although the accuracy of the measured value is improved by the devices, the problem that the measured uterine opening size deviates from the natural opening size still exists due to the adoption of the open type measuring method similar to finger detection. Chinese patent document CN201910149623.8 discloses a device and a method for detecting the degree of cervical orifice dilation in labor process, which are based on image acquisition, identification and data processing methods, and are used for measuring images of the cervical orifice, fetal presenting images and anatomical site images of ischial spine, and then processing the images by using software to obtain the data of the size of the uterine orifice and the position of fetal head.

Disclosure of Invention

In view of the above, the present invention provides an integrated uterine orifice and fetal head position measuring device.

The technical scheme is as follows:

an integrated uterine orifice and fetal head position measuring device comprises a vaginal speculum assembly, the vaginal speculum assembly comprises two blades which are matched with each other, namely a fixed blade and a rotating blade, the tail ends of the two blades are hinged with each other to form an oval hole, the tail ends of the two blades are connected with handles respectively, the front ends of the two blades are provided with duckbills respectively, the key is that,

a measuring rod seat is detachably arranged in the oval hole, and an observation hole is reserved between the measuring rod seat and the inner wall of the oval hole;

a rod-shaped depth scale is arranged on the measuring rod seat in a sliding mode, the depth scale is arranged along the extending direction of the fixed blade, and the depth scale deviates towards the fixed blade;

a light source adjusting rod is also arranged on the measuring rod seat in a sliding manner, the light source adjusting rod is parallel to the depth ruler, a palace mouth measuring light source is arranged on the light source adjusting rod, the central line of a light beam emitted by the palace mouth measuring light source is overlapped with the central line of the oval hole, the light beam emitted by the palace mouth measuring light source is emitted along a fixed emergent angle, and the emergent angle is an acute angle;

the depth scale is provided with a first depth scale, and the light source adjusting rod is provided with a second depth scale;

the tip of duckbilled corresponds the notch of stepping down has been seted up to the depth-of-depth chi.

Design more than adopting, through the gauge length measurement fetal head position height, on this basis, the facula that makes its light beam of sending throw on the cervical orifice through the position of adjusting the palace mouth measurement light source just covers the cervical orifice, can calculate cervical opening size in view of the above, because adopt non-distraction's mode to measure cervical orifice natural size, the cervical opening data of surveying is more true and reliable to reduce and measure the discomfort.

As the preferred technical scheme, the front end of the depth gauge is fixedly provided with an elastic abutting gasket.

By adopting the design, the damage or discomfort to the fetus or the pregnant woman is prevented

As a preferred technical scheme, the light emergence angle of the uterine opening measuring light source is 40-90 degrees.

By adopting the design, when the uterine orifice measuring light source is at a proper distance from the uterine orifice, the projected light spot can cover the cervical orifice.

Preferably, the light exit angle of the uterine cavity measuring light source is 60 °.

By adopting the design, the measuring distance between the uterine orifice measuring light source and the uterine orifice is further optimized.

As a preferred technical scheme, the diameter of the exit point of the light beam emitted by the uterine orifice measuring light source is 4-6 mm.

By adopting the design, the light beam propagation diffusion effect is not obvious.

As a preferred technical scheme, the uterine opening measuring light source is an LED light source with a convex lens.

By adopting the design, the device is a mature device, so that the device is convenient to use and replace.

According to a preferable technical scheme, the uterine opening measuring light source comprises an LED lamp, a conical light guide cylinder is arranged outside the LED lamp, the LED is located in the small-diameter end of the light guide cylinder, and the large-diameter end of the light guide cylinder faces the duckbill direction.

By adopting the design, the light guide cylinder restrains the propagation angle of the light beam.

Preferably, the cross section of the fixed blade is arc-shaped groove-shaped;

the measuring rod seat comprises two supports, namely a first support and a second support, wherein the first support and the second support are arranged along the length direction of the fixed blade and are fixedly connected through a connecting plate;

each support is provided with a support ring sleeve, the two support ring sleeves are arranged on the same center line, and the same depth ruler is slidably arranged in the two support ring sleeves in a penetrating manner;

each support is further provided with a supporting slide block, and the two supporting slide blocks are provided with the same light source adjusting rod in a sliding mode.

By adopting the design, the depth gauge and the light source adjusting rod are convenient to move.

As a preferred technical scheme, the support comprises an arc-shaped plate matched with the inner wall of the fixed blade, the support ring sleeve is arranged in the arc-shaped plate, and at least two support columns which are arranged in the radial direction are fixedly connected between the support ring sleeve and the inner wall of the arc-shaped plate;

the arc plates of the two supports are fixedly connected through a connecting plate;

each support ring sleeve is further fixedly provided with the support sliding block, the support sliding block is located on the outer wall, back to the fixed blades, of the support ring sleeve, and a sliding groove is formed in the light source adjusting rod corresponding to the support sliding block.

By adopting the design, the arc-shaped plate can be embedded into the inner cavity of the fixed blade, the measuring rod seat is convenient to install in the inner cavity of the fixed blade in an interference manner and is convenient to take out, and the supporting ring sleeve and the supporting sliding block are simple in structure and convenient to install the depth scale and the light source adjusting rod.

As the preferred technical scheme, the first support is provided with a limit stop corresponding to the tail end of the fixed blade.

By adopting the design, the measuring rod seat is conveniently positioned at the tail end of the fixed blade.

Compared with the prior art, the invention has the beneficial effects that: the fetal head position and the uterine opening size can be measured simultaneously, the light beam emitted by the uterine opening measuring light source is enabled to be projected to the light spot on the uterine opening by adjusting the position of the uterine opening measuring light source, so that the uterine opening is just covered, the cervical opening size is calculated accordingly, the measured cervical opening data is more real and reliable due to the fact that the natural size of the uterine opening is measured in a non-opening mode, and measuring discomfort is reduced.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a left side view of FIG. 1;

FIG. 3 is a schematic structural view of a measurement assembly;

FIG. 4 is a schematic view of a measuring stick base;

FIG. 5 is a schematic view of the present invention in an operational state, wherein two blades of the vaginal speculum assembly are open;

fig. 6 is a diagram of the measuring and calculating principle of the uterine orifice.

Detailed Description

The present invention will be further described with reference to the following examples and the accompanying drawings.

As shown in fig. 1, 2 and 5, an integrated uterine orifice and fetal head position measuring device comprises a vaginal speculum assembly, which comprises two mutually matched blades, namely a fixed blade 41 and a rotating blade 42. The cross sections of the fixed blade 41 and the rotating blade 42 are arc-shaped groove-shaped, and the notches of the fixed blade and the rotating blade are opposite. The tail ends of the two blades are hinged to form an oval hole, the tail ends of the two blades are connected with handles 43 respectively, and the front ends of the two blades are provided with duckbills respectively.

Detachably is equipped with measuring component in the oval hole, and this measuring component includes the measuring rod seat, this measuring rod seat with leave the observation hole between the inner wall of oval hole. As shown in fig. 2 and 3, a rod-shaped depth scale 31 is slidably provided on the measuring rod base, the depth scale 31 is provided along the extending direction of the fixed blade 41, and the depth scale 31 is offset to the fixed blade 41.

The measuring rod seat is also provided with a light source adjusting rod 21 in a sliding manner, the light source adjusting rod 21 is arranged in parallel to the depth ruler 31, the light source adjusting rod 21 is provided with a uterine opening measuring light source 22, the central line of a light beam emitted by the uterine opening measuring light source 22 is overlapped with the central line of the oval hole, the light beam emitted by the uterine opening measuring light source 22 is emitted along a fixed emergent angle, and the emergent angle is an acute angle.

The depth scale 31 is provided with a first depth scale, and the light source adjusting rod 21 is provided with a second depth scale.

As shown in fig. 2, the end of the duckbill is provided with an abdicating notch corresponding to the depth ruler 31 and the uterine cavity measuring light source 22, so as to allow the depth ruler 31 to pass through and allow the light emitted by the uterine cavity measuring light source 22 to pass through. The front end of the depth gauge 31 is fixedly provided with an elastic abutting pad 32.

As shown in fig. 4, the measuring rod base includes two supports 10, namely a first support and a second support, which are arranged along the length direction of the fixed blade 41 and fixedly connected by a connecting plate 12. The first of which is located at the rear end of the fixed vane 41.

The support 10 comprises an arc-shaped plate 11 adapted to the inner wall of the fixed vane 41. The arc plates 11 of the two supports 10 are fixedly connected through a connecting plate 12. Each arc plate 11 is internally provided with a supporting ring sleeve 14, and at least two supporting columns 15 which are arranged in the radial direction are fixedly connected between the supporting ring sleeve 14 and the inner wall of the arc plate 11. The two supporting ring sleeves 14 are arranged on the same center line, and the same depth gauge 31 is arranged in the two supporting ring sleeves 14 in a sliding and penetrating mode.

Each of the support ring sleeves 14 is further fixedly provided with the support slider 16, and the support slider 16 is located on an outer wall of the support ring sleeve 14 facing away from the fixed blade 41. The light source adjusting rod 21 is provided with a sliding groove corresponding to the supporting sliding block 16, and the two supporting sliding blocks 16 extend into the sliding groove to allow the light source adjusting rod 21 to slide along the connecting line direction of the two supporting sliding blocks 16.

The first support is provided with a limit stop 13 corresponding to the tail end of the fixed blade 41 to prevent the measuring rod from sliding towards the front end of the fixed blade 41.

The light emergence angle of the uterine opening measuring light source 22 is 40-90 degrees, and preferably 60 degrees. The diameter of the exit point of the light beam emitted by the uterine opening measuring light source 22 is 4-6 mm.

In one embodiment, the ostium measurement light source 22 is a LED light source with a convex lens. The convex lens has a function of converging light emitted by the LED lamp and enables the light beam to be emitted at a fixed emergent angle. The LED lamp with the lens is an existing mature product.

In another embodiment, the light source 22 comprises an LED lamp with a tapered light pipe disposed outside the LED lamp, the LED is located in the small diameter end of the light pipe, and the large diameter end of the light pipe faces the duckbill direction. The conical light guide cylinder plays a role in restraining light rays emitted by the LED lamp, so that the light rays are emitted at a fixed emergent angle.

The use mode of the device is as follows: the measuring assembly is arranged on the vaginal speculum assembly, the abutting gasket 32 at the front end of the depth ruler 31 is located between the two blades, the blades of the vaginal speculum assembly extend into the vagina, the tail end of the fixed blade 41 is located at the vaginal opening, the first support corresponds to the handle 43 of the fixed blade 41, namely the vaginal opening, and serves as a measuring datum point, and the fetal head position is the distance between the fetal presenting fluid and the vaginal opening.

The two blades are opened to open the vagina, the depth ruler 31 is pushed to enable the abutting gasket 32 to be slightly abutted against the fetus to expose the fetus head, and the distance d between the fetus head and the vaginal opening is determined according to the reading of the depth ruler 31 corresponding to the first support₁To determine the position of the fetal head, when the fetal head is in the vagina, d₁Is negative.

The light source adjusting rod 21 is moved to adjust the position of the uterine opening measuring light source 22, so that a projection light spot formed by the light beam emitted by the uterine opening measuring light source 22 at the uterine opening basically covers the uterine neck opening, the reading of the second depth scale corresponding to the first support at the moment is read, and the distance d between the light emitting opening of the uterine opening measuring light source 22 and the vaginal opening is determined according to the reading₂Wherein the light exit opening of the uterine orifice measuring light source 22 is negative when located inside the vagina and positive when located outside the vagina. For convenient use, the position of the uterine orifice measuring light source 22 on the light source adjusting rod 21 can be adjusted, after the position of the uterine orifice measuring light source 22 on the light source adjusting rod 21 is changed, d is determined according to two readings at the light source adjusting rod 21 corresponding to the uterine orifice measuring light source 22 and the first support respectively₂The numerical value of (c).

Because the propagation distance is short, the light diffusion phenomenon is not obvious, and the diffusion phenomenon in the light propagation process is not considered. Referring to fig. 6, it is noted that the exit angle of light from the light source 22 is θ, and the diameter of the exit point of the light beam from the light source 22 is D₁Opening diameter of cervix D₂Based on the straight-line propagation property of light and the Pythagorean theorem, D is calculated according to the following equations (1) and (2)₂：

D₂＝D₁+2×Δd×tan(θ/2) (1)

Δd＝|d₁-d₂| (2)。

In actual use, due to D₁Smaller, in calculating D₂This term may be ignored. For further convenience of use, a query table for the uterine orifice measurement can be formed in advance according to the calculation result, and the measurement is carried outThe quantity look-up table being produced as a look-up tag, which is assigned to each measuring device in order to be dependent on the measured d₁And d₂The approximate range of the cervical opening size can be conveniently inquired by a doctor or a midwife directly. At theta 60 DEG and D₁For example, 4mm, D₂And d₁And d₂The table of the comparison of (A) and (B) is shown in Table 1.

TABLE 1 cervical orifice query table (Unit: cm)

Finally, it should be noted that the above-mentioned description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and scope of the present invention.