JPH048447Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a childbirth assistance training device.

(B) Prior art During delivery, the fetus is usually delivered from the mother's body while changing its posture (orientation) as follows. In other words, as shown in Figure 5, fetus B normally initially faces the left side of its body downward (toward the dorsal side of mother M), but as its head descends down the birth canal, the fetus turns counterclockwise. The baby changes its position and turns face down (b, c); the back of the head emerges from the mother's body (d); the head is completely expelled (e)
Then, the fetus turns again in the opposite direction (to the right) and is delivered from the shoulder (now facing sideways with its left side down). Appropriate assistance is required at each stage of childbirth.

Conventionally, as a teaching device for how to assist in fetal delivery, a fetal model is placed inside a model modeled on the lower abdomen of a female body, and the instructor moves the fetal model with his/her hands to teach the process of childbirth and how to assist. was.

(c) Problems that the invention aims to solve With such a device, the instructor must simultaneously perform the fetal movements during delivery and the assistance movements using his/her own hands, so it is difficult to accurately control the fetal movements. It is extremely difficult to appropriately demonstrate assistance movements according to the progress of childbirth, and the inconvenience of requiring an assistant.

The present invention proposes a delivery assistance training device that solves the above problems.

(d) Means and action for solving the problems The device of the present invention has a base that imitates the lower abdomen of a female body, which has at least a recess that imitates the pelvic cavity and a hole that imitates the vaginal opening, and a fetus model having a portion that imitates at least the head and shoulders of a fetus, and a rotating shaft provided at one end with means for removably supporting the fetus model; It is placed in relation to the location and guided so that it can move forward and backward in the axial direction. In the retracted position of this rotary shaft, the fetal model supported by the support means at the tip is positioned in a recess simulating the pelvic cavity, and in the forward position of the rotary shaft, the fetal model is moved from the recess simulating the pelvic cavity into the vagina. It protrudes to the outside of the base through a hole that resembles a mouth, and after the head comes out, the rotating shaft is rotated by a certain angle (approximately 90 degrees) in synchronization with the advancing movement of this rotating shaft. The model's shoulders are rotated (changed in direction) to emerge from a hole that resembles the vaginal opening, thereby simulating the movements of a fetus being delivered.

(e) Embodiments Embodiments will be described in detail below with reference to FIGS. 1 to 4.

In the figure, reference numeral 1 denotes a base that imitates the mother's lower abdomen, and has a raised part 2 that imitates the pelvis and a recess 3 that imitates the pelvic cavity formed on the upper surface, and a pair that imitates both thighs. Projections 4 and 5 are attached.

Reference numeral 6 refers to a hole provided between both thighs 4 and 5 on one side of the base 1, which communicates with the pelvic cavity. Reference numeral 7 refers to a membrane made of an elastic material such as rubber stretched over this hole 6, and reference numeral 8 refers to this hole. This is an opening made in the membrane body 7 and imitating the vaginal opening.

Reference numeral 9 denotes a fetal model drive unit attached to the base 1 on the side opposite to the vaginal opening 8, and in the illustrated example, it has the following configuration. That is, reference numeral 10 is a support frame fixed to the side surface of the base 1, movably supports the fetal model carriage 11 on the upper surface, and is provided with a drive mechanism for the carriage 11 and a control electric circuit.

Reference numeral 12 designates a motor for moving the carriage 11, and its output shaft 13 rotates a sprocket wheel 14, causing a chain 16 that is wound between the sprocket wheels 14 and 15 to travel.

The carriage 11 has a movable plate 17, and rollers 18 attached to the lower surface of the movable plate 17 rollably sandwich both edges of a guide plate 19 on the upper surface of the support frame 10. 20 is a hanging leg attached to the movable plate of the carriage 11, and is fixed to the chain 16 of the carriage drive mechanism. Therefore, when the chain 16 is run, the carriage 11 also moves linearly back and forth along the guide plate 19. Reference numeral 21 denotes a switch operating arm attached to the movable plate 17 of the carriage, and a control micro switch S1 attached to the side surface of the support frame 10.
S2, S3, S4, and S5 are opened and closed in response to the above-mentioned movement of the carriage 11.

22 is a bracket fixed on the movable plate 17;
23 is a rotary shaft rotatably supported by the bracket 22; 24 is a motor for driving the rotation of the rotary shaft 23;
Reference numeral 5 indicates a fetal model attachment attached to the tip of the rotating shaft 23, and reference numeral 26 indicates a fetal model.

The fetal model drive unit 9 and the carriage 11 are arranged so that when the fetal model 26 attached to the tip of the rotating shaft 23 is at the delivery operation start position, the fetal model head 27 is placed inside the vaginal opening 8 in the pelvic cavity 3, and the delivery starts. It is arranged relative to the base 1 so that at least the head and shoulders of the fetus can pass through the vaginal opening and emerge to the outside. S6, S7, and S8 are micro switches for controlling the rotation of the rotary shaft 23 provided on the bracket 22, and the rotary shaft 23 is stopped at positions rotated by 90 degrees in opposite directions (left and right sides) from the illustrated position. Reference numeral 28 denotes a switch actuation projection fixed to the large diameter portion 23a of the rotating shaft 23. S9 is a start switch, S10 is a rotation direction changeover switch, and S11 is a return switch.

A control circuit (not shown) is provided in the base 1 and is configured as appropriate to control the motors 12 and 24 based on the opening and closing of the switches S1 to S11 to cause the device to perform the following operations. There is.

In the above configuration, the fetal model 26 is attached to the rotating shaft 2
Attach the head 27 to the tip fitting 25 of No. 3 with the head 27 facing downward. When the carriage 11 is in the most retracted position shown in FIGS. 2 and 3, the head 27 of the fetal model 26 is
is located within the pelvic cavity 3. When the start switch S9 is pressed in this state, the motor 12 rotates at normal speed, the carriage 11 moves forward along the guide plate 19, and when the switch operating arm 20 operates the switch S2, the motor 12 is stopped. At this time, a part of the head of the fetal model protrudes outside from the opening (vaginal opening) 8 of the elastic membrane 7. Then, the position of the protruding model's head is corrected to the correct position (corresponding to FIG. 5 c to d). Next, when the start switch S9 is pressed again, the motor 12 is restarted and the carriage 11 moves forward again, but in this case the forward speed is low, for example, 1/2 of the normal speed. When the head 27 has completely exited the vaginal opening 8 (corresponding to FIG. 5e), the actuating arm 20 of the carriage 11 actuates the switch S3. The actuation of this switch S3 starts the motor 24 and rotates the rotating shaft 23, for example, counterclockwise in FIG. 4. During this time, the carriage 11 continues to move forward, so that the fetus (and therefore its head) slowly turns from facing downwards to the right (left shoulder downwards), and both shoulders appear outside the vaginal opening (corresponding to Figure 5 f). . The protrusion 28 then activates the switch S7 to stop the motor 24.

When the actuating arm 20 operates the switch S4 as the carriage 11 moves forward, the motor 12 returns from low speed to normal speed, the carriage (therefore the fetus) further moves forward, and the fetal model appears outside the maternal model up to the chest area. At this time, the operating arm 20 is switched to switch S.
5 to stop the motor 12 and thus stop the carriage 11 from moving forward.

The instructor provides appropriate assistance and explanations at each stage of the fetal model movement described above.

After taking out the fetal model, return switch S
When 11 is pressed, the motor 12 is reversed, and the motor 12 is stopped when the carriage 11 is moved backward at normal speed and the actuation arm 20 actuates the switch S1. During this time, the motor 24 and therefore the rotating shaft 23 also rotate in the opposite direction to the previous direction, and when the protrusion 28 rotates 90 degrees and activates the switch S6, the motor 24 and the rotating shaft 23 rotate.
stops.

(f) Effects As described above, according to the present invention, the movements of the fetus, especially the head and shoulders, during delivery can be automatically simulated, allowing instructors to effectively use both hands to provide assistance at each stage of delivery. can be taught in detail.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an embodiment of the present invention, Fig. 2 is a front view of the fetal model carriage and its drive mechanism, Fig. 3 is a left side view, and Fig. 4 is a rear view of the base. A diagram showing the state in which the part and fetal model are attached,
FIG. 5 is an explanatory diagram showing the movement of the fetus during delivery. 7... Membrane body, 9... Drive section, 10... Support frame,
11... Carriage, 12, 24... Motor, 1
3... Output shaft, 16... Chain, 17... Movable plate, 18... Roller, 19... Guide plate, 22...
Bracket, 23... Rotating shaft, S1 to S8... Micro switch.

Claims (1)

[Scope of claim for utility model registration] A base that imitates the lower abdomen of a female body, having at least a recess that imitates the pelvic cavity and a hole that imitates the vaginal opening, and at least the head and shoulders of a fetus during normal delivery. a fetus model having a modeled portion; a rotating shaft provided at one end with means for removably supporting the fetus model; and supporting the rotating shaft so as to be movable in the axial direction in relation to the recess of the base. and the fetal model supported by the support means is disposed in the recess at the retracted position of the rotating shaft, and the fetal model protrudes from within the recess through the hole at the position of the rotating shaft. A childbirth assistance training device comprising: a means for guiding the rotation shaft; and a means for rotating the rotary shaft by a predetermined angle in synchronization with its advancing movement.