JP2023173106A - Muscular strength display device - Google Patents

Abstract

To improve the usability of a muscular strength display device which displays the muscular strength of the pelvic floor muscle.SOLUTION: A muscular strength display device comprises: a resistance generation part (coil spring 50) which generates the resistance to the external force of an insertion part 20 that is detachably inserted to the interior of the vagina and receives the external force following the contraction of the pelvic floor muscle; and a display part 40 which displays a value of the external force as the muscular strength of the pelvic floor muscle. The insertion part 20 comprises: a first piece 21; and a second piece 22 which is opposed to the first piece 21 with an interval and is coupled to the first piece 21 such that the interval can be changed. The resistance generation part generates the resistance when the external force in the direction of narrowing the interval acts on the first piece 21 and the second piece 22. The display part 40 displays the value of the external force on the basis of the interval in the time of contraction of the pelvic floor muscle, and can display the value of the external force after the insertion part 20 is extracted from the vagina.SELECTED DRAWING: Figure 3

Description

The present invention relates to a muscle strength display device that displays the muscle strength of pelvic floor muscles.

Pelvic floor muscles are hammock-shaped muscles located at the bottom of the pelvis, and are responsible for supporting internal organs and controlling excretion. By increasing the strength of the pelvic floor muscles, it is possible to prevent visceral drooping and urinary incontinence. Approximately 40% of adult women experience urinary incontinence, and in severe cases, it can significantly impair quality of life.
As a training for increasing the strength of the pelvic floor muscles, for example, "pelvic floor muscle exercises"("Kegelexercises") in which the pelvic floor muscles are voluntarily contracted are known.

On the other hand, various devices have also been proposed to increase the strength of the pelvic floor muscles.
For example, the exercise device described in Patent Document 1 is manufactured by folding an elastic band plate into a substantially V-shape at the middle in the longitudinal direction. The exercise device of Patent Document 1 includes a first part and a second part with a folded part as a boundary, and the distance between the first part and the second part gradually increases as the distance from the folded part increases. There is.
The exercise device of Patent Document 1 is used by inserting the first part and the second part into the vagina with the folded part at the beginning. Since the folded portion of this exercise device has elasticity, an external force greater than the elastic force of the folded portion is required to narrow the distance between the first portion and the second portion.
Therefore, when the pelvic floor muscles are contracted with the first portion and the second portion inserted into the vagina, the elastic force (resistance) of the folded portion acts on the pelvic floor muscles, thereby increasing the muscle strength.

Patent Document 2 discloses a training device that includes a round bar-shaped measurement section equipped with a pressure-sensitive sensor and a processing display section electrically connected to the measurement section via a connection section (communication cord). has been done.
In order to train the pelvic floor muscles using the training device of Patent Document 2, the measuring section is inserted into the rectum through the anus, and an action is performed to contract the pelvic floor muscles in a manner similar to tightening the anus. When the pelvic floor muscles are contracted, the resistance from the measuring section acts on the pelvic floor muscles, increasing muscle strength.
The processing and display unit extracts and displays information representing movement components of the pelvic floor muscles based on the signal obtained from the pressure-sensitive sensor during training. Therefore, with the training device of Patent Document 2, it is possible to objectively evaluate the training based on the movement of the pelvic floor muscles.

Patent Document 3 discloses a training device that includes an elongated cylindrical tube made of an elastic body and a pressure gauge communicated with the tube through a flexible tube.
In order to train the pelvic floor muscles using the training device of Patent Document 3, the tube is inserted into the vagina, and the pelvic floor muscles are contracted in a manner that reduces the diameter of the tube inside the vagina. When the pelvic floor muscles are contracted, the elastic force (resistance) of the tube body acts on the pelvic floor muscles, increasing muscle strength.
The pressure gauge displays the air pressure inside the tube as muscle force during training. Therefore, with the training device of Patent Document 3, it is possible to objectively evaluate the training (muscle strength of the pelvic floor muscles) based on the air pressure inside the tube.

Patent No. 4477807 Patent No. 3472551 Japanese Unexamined Patent Publication No. 52-144190

Although the device of Patent Document 1 can increase the muscle strength of the pelvic floor muscles, it is difficult to objectively evaluate the muscle strength of the pelvic floor muscles. Although the device disclosed in Patent Document 2 can objectively evaluate the muscle strength of the pelvic floor muscles, the user may feel uneasy because electronic components (pressure-sensitive sensors, etc.) are attached to the measurement section that is inserted into the rectum. There is a fear. In addition, it is difficult to insert a rod-shaped measuring part inside the rectum. The device of Patent Document 3 can objectively evaluate the muscle strength of the pelvic floor muscles, but since the tubular body and the pressure gauge are communicated through a flexible tube, the tube and pressure gauge may get in the way during use. Become.
The present invention has been made in view of these circumstances, and its purpose is to improve the usability of a muscle strength display device that displays the muscle strength of pelvic floor muscles.

In order to solve the above problems, a muscle strength display device according to the present invention includes an insertion portion that is detachably inserted into the vagina and receives an external force as the pelvic floor muscles contract, and a drag force that generates a resistance against the external force. a generating section; and a display section that displays the value of the external force as the muscle strength of the pelvic floor muscles; a second piece coupled to the first piece such that the spacing can be freely changed; the display section displays the value of the external force based on the interval during contraction of the pelvic floor muscles, and the display section displays the value of the external force based on the interval when the pelvic floor muscle is contracted; It is characterized by having a configuration capable of displaying the value of external force.

According to the muscle strength display device according to the present invention, it is possible to improve the usability of the muscle strength display device that displays the muscle strength of the pelvic floor muscles.

FIG. 1 is a perspective view of a muscle strength display device according to a first embodiment. FIG. 1 is a front view of the muscle strength display device according to the first embodiment. FIG. 1 is a sectional view of a muscle strength display device according to a first embodiment. It is a figure explaining the exchange work of a 1st display part and a 2nd display part. FIG. 3 is a diagram showing a state before insertion of the muscle strength display device according to the first embodiment into the vagina. FIG. 2 is a diagram showing a state in which the muscle strength display device according to the first embodiment is inserted into the vagina. FIG. 3 is a diagram showing the state of the pelvic floor muscles when they are contracted. FIG. 3 is a diagram showing a state in which the muscle strength display device according to the first embodiment is pulled out of the vagina. FIG. 3 is a diagram illustrating the movement of the indicator body, in which (a) shows the state before insertion of the muscle strength display device, (b) shows the state where the distance between the first piece and the second piece is narrowed, and (c) shows the state before the muscle strength display device is inserted. This figure shows the state after the muscle strength display device is removed from the vagina. It is a figure explaining the muscular strength display device concerning the modification of a 1st embodiment, (a) is a perspective view, and (b) is a sectional view. (a) is a perspective view of the muscle strength display device according to the second embodiment, and (b) is an enlarged view of the display section. FIG. 7 is a perspective view of a muscle strength display device according to a modification of the second embodiment. It is a figure explaining the muscle strength display device concerning 3rd Embodiment, (a) is a perspective view of one side, (b) is a perspective view of the other side. FIG. 7 is a perspective view of a muscle strength display device according to a modification of the third embodiment.

<Overview and features of the muscle strength display device>
Embodiments of the present invention will be described below with reference to the drawings. However, unless there is a specific description, the components, types, combinations, shapes, relative arrangements thereof, etc. described in this embodiment are merely illustrative examples and do not limit the scope of this invention. .
First, the outline and characteristics of the muscle strength display device 1 will be explained. 1 to 3 are a perspective view, a front view, and a sectional view of a muscle strength display device 1 according to a first embodiment.

As shown in FIGS. 1 to 3, the muscle strength display device 1 includes an insertion section 20 that is removably inserted into the vagina VG (see FIG. 5, etc.), and a pelvic floor muscle MS (see FIG. 5, etc.). The device includes a display section 40 that displays the muscle strength of the patient, and a mounting section 30 for attaching the display section 40 to the insertion section 20.
The insertion portion 20 includes a first piece 21 made of a narrow band-shaped plate material, and a second piece 21 made of a narrow band-shaped plate material and arranged opposite to the first piece 21 in a substantially V-shape with a space therebetween. It includes a piece 22 and a connecting piece 23 that connects the ends of the first piece 21 and the second piece 22 on the narrower side (tip side).
A first mounting piece 31 constituting the mounting portion 30 is integrally provided on the rear end side of the first piece 21, and a second mounting piece 32 constituting the mounting portion 30 is integrally provided on the rear end side of the second piece 22. It is set in. The first mounting piece 31 and the second mounting piece 32 extend continuously and curved outward from the rear end portions of the first piece 21 and the second piece 22, respectively. The first attachment piece 31 and the second attachment piece 32 are located outside the vagina VG with the insertion portion 20 inserted into the vagina VG, and are grasped by the user when attaching and detaching the muscle strength display device 1. .

The display section 40 is attached across the first attachment piece 31 and the second attachment piece 32, and displays the value of the external force received by the insertion section 20 due to the contraction of the pelvic floor muscles MS as the muscle strength of the pelvic floor muscles MS. Display as .
The illustrated display unit 40 includes a cylindrical tube portion 41 with one longitudinal end closed, a round bar-shaped shaft portion 42 inserted into the interior from the other end opening of the tube portion 41, and a ring-shaped (circular) tube portion 41. The indicator body 43 has an annular shape. The cylindrical portion 41 is attached to the first attachment piece 31 by fitting the first engagement protrusion 33, and the other end 41a (opening) in the longitudinal direction is directed toward the second attachment piece 32 side. It is extending. The shaft portion 42 is attached to the second mounting piece 32 by fitting the second engagement protrusion 34, and one longitudinal end of the shaft portion 42 is inserted into the inner cavity 41c of the cylindrical portion 41 so as to be freely retractable. are doing. Note that the cylindrical portion 41 may be attached to the second attachment piece 32 and the shaft portion 42 may be attached to the first attachment piece 31.
As shown in FIG. 3, the index body 43 is inserted through the shaft so that it is supported by the outer circumferential surface of the shaft 42 so as to be able to move forward and backward in the axial direction, and extends along the longitudinal direction of the shaft 42. It is relatively movable. A coil spring 50 (drag generating portion) is disposed within the inner cavity 41c of the cylindrical portion 41, and an end surface 50a of the coil spring 50 and an end surface of the shaft portion 42 (end surface 42d of the shaft body 42a) are in contact with each other. The shaft portion 42 is biased in a direction away from the cylindrical portion 41 by the coil spring 50 .
Note that the drag generating section is not limited to the coil spring 50, and various elastic bodies such as rubber and plate springs can be used.

Next, an outline of how to use the muscle strength display device 1 will be explained.
FIG. 7 is a diagram showing the state when the pelvic floor muscles are contracted, FIG. 9(a) is a diagram showing the state before insertion of the muscle strength display device, and FIG. 9(b) is a diagram showing the state when the pelvic floor muscles are contracted. FIG. 9(c) is a diagram showing the narrowed state, and is a diagram showing the state after the muscle strength display device has been pulled out of the vagina.
As shown in FIG. 9A, the indicator body 43 is manually placed at a position (initial position) in contact with the other end 41a of the cylindrical portion 41 prior to use of the muscle strength display device 1. When using the muscle strength display device 1, the user inserts the insertion portion 20 into the vagina VG from the connecting piece 23 side (folded portion side) while holding the indicator body 43 at the initial position.
As shown in FIG. 7, when the user contracts the pelvic floor muscles MS with the entire insertion section 20 inserted into the vagina VG, the first piece 21 and An external force F acts on the second piece 22 in the direction of narrowing the distance between the first piece 21 and the second piece 22, and the shaft part 42 of the display part 40 is pushed into the inner cavity 41c of the cylindrical part 41. At this time, the coil spring 50 disposed between the cylindrical portion 41 and the shaft portion 42 generates a drag force. When the external force F (contraction force of the pelvic floor muscles MS) overcomes the resistance of the coil spring 50, the distance between the first piece 21 and the second piece 22 is narrowed, and the shaft portion 42 enters the inner space 41c of the cylindrical portion 41. do.

Since the index body 43 is in contact with the other end 41a of the cylindrical portion 41, it relatively moves along the longitudinal direction of the shaft portion 42 as it enters the inner space 41c of the shaft portion 42. Therefore, the position of the index body 43 on the shaft 42 (the amount of movement of the index body 43 on the shaft 42) depends on the distance between the first piece 21 and the second piece 22 when the pelvic floor muscles MS contract. It is determined.
Then, the shaft portion 42 stops entering the inner space 41c when the external force F and the drag force of the coil spring 50 are balanced.

When the user relaxes the pelvic floor muscles MS and the insertion section 20 is removed from the vagina VG, the distance between the first piece 21 and the second piece 22 increases due to the elastic force of the connecting piece 23 and the restoring force of the coil spring 50. . When the distance between the first piece 21 and the second piece 22 increases, the shaft portion 42 of the display portion 40 moves in the opposite direction (direction away from the cylindrical portion 41). At this time, the index body 43 moves together with the shaft portion 42 while maintaining the position at the time of contraction due to friction between the inner circumferential surface of the index body 43 and the outer circumferential surface of the shaft portion 42 . That is, the frictional resistance between the inner circumferential surface of the indicator body 43 and the outer circumferential surface of the shaft portion 42 is appropriately set so as to enable the above-described operation.
When the insertion section 20 is removed from the vagina VG, the position of the index body 43 on the shaft section 42 is determined by the value of the external force F received by the insertion section 20 due to contraction of the pelvic floor muscles MS (muscle strength of the pelvic floor muscles MS). shows. Therefore, the user can know the muscle strength of the pelvic floor muscles MS based on the position of the index body 43 on the shaft portion 42.
According to the muscle strength display device 1 having the above configuration, the insertion section 20 does not include any electronic components, and the display section 40 does not include a tube or a pressure gauge, so that usability can be improved.

<Details of the muscle strength display device 1 according to the first embodiment>
The muscle strength display device 1 according to the first embodiment will be described in detail below. As shown in FIGS. 1 to 3, the muscle strength display device 1 includes an insertion section 20, a mounting section 30, and a display section 40.
The insertion portion 20 is made of elastic resin and is formed integrally with the attachment portion 30. For convenience, the combination of the insertion section 20 and the attachment section 30 is also referred to as the main body section 10. The insertion portion 20 includes a first piece 21 and a second piece 22 that are connected in a substantially V-shape by a connecting piece 23 . Therefore, the distance between the first piece 21 and the second piece 22 is narrowest on the connecting piece 23 side, and gradually widens as it moves away from the connecting piece 23.

The first piece 21 and the second piece 22 are narrow strip-shaped plates, and as shown in the enlarged cross-sectional view in FIG. The outer surface is curved to make it thinner. Similarly, the outer surface of the connecting piece 23 is also curved into an arc shape. By curving the outer surface of the first piece 21, the outer surface of the second piece 22, and the outer surface of the connecting piece 23, it is difficult to irritate the user when inserting the insertion section 20 into the vagina VG. are doing.
The width of the first piece 21 and the second piece 22 is, for example, 15 mm to 30 mm, and the length of the insertion part 20 including the connecting piece 23 is 85 mm to 120 mm, but it is important that there is no difficulty in inserting it into the vagina VG. However, the size is not limited. Further, the intersecting angle (inner angle) between the first piece 21 and the second piece 22 is 15 degrees to 25 degrees, but the intersecting angle is not limited as long as it does not hinder insertion into the vagina VG.

As shown in FIG. 3, the main body part 10 (a set of the insertion part 20 and the attachment part 30) mainly consists of a first resin RS1 that forms the outer surface of the main body part 10, and a center part of the main body part 10. and a second resin RS2 forming the inner surface. In this embodiment, the main body portion 10 is manufactured by insert molding.
Since the first resin RS1 is a part that comes into direct contact with the user's vagina VG, it is made of a flexible resin that has less surface friction than the second resin RS2. In this embodiment, the surface of the first resin RS1 is textured.
The second resin RS2 functions as a core material in the main body portion 10, and is made of a resin having a rigidity capable of resisting the force generated by the coil spring 50.
The types of the first resin RS1 and the second resin RS2 are not particularly limited as long as they satisfy these conditions. Note that the main body portion 10 may be made of one type of resin that has both the characteristics of the first resin RS1 and the characteristics of the second resin RS2.

The mounting portion 30 includes a first mounting piece 31 that is continuously provided from the rear end of the first piece 21 (an end opposite to the connecting piece 23), and a rear end of the second piece 22 (the end opposite to the connecting piece 23). a second attachment piece 32 provided continuously from the opposite end); a first engagement protrusion 33 protruding from the surface of the first attachment piece 31 opposite to the surface on the insertion portion 20 side; A second engagement protrusion 34 is provided to protrude from the surface of the second attachment piece 32 on the side opposite to the surface on the insertion portion 20 side.
The first mounting piece 31 extends outward from the rear end of the first piece 21, and the second mounting piece 32 extends from the rear end of the second piece 22 in the direction in which the V-shape expands. There is. In this embodiment, the length of the first attachment piece 31 is longer than the length of the second attachment piece 32. An end portion of the first attachment piece 31 that extends outward beyond the first engagement protrusion 33 is a grip portion 35 that is gripped by the user's fingers.
The first engagement protrusion 33 is a spherical protrusion, and is provided integrally with the first attachment piece 31. The second engagement protrusion 34 is also a spherical protrusion, and is provided integrally with the second attachment piece 32.

Next, the display section 40 will be explained. As shown in FIGS. 2 and 3, the display section 40 includes a cylinder section 41, a shaft section 42, and an indicator body 43.
The cylindrical portion 41 has a cylindrical shape with one longitudinal end closed and the other end 41a open. The end surface on the one end side of the cylindrical portion 41 has a hemispherical shape, and a spherical first engagement recess 41b is provided on the outer peripheral surface of the one end side portion. The first engagement protrusion 33 of the first attachment piece 31 is removably fitted into the first engagement recess 41b. Further, a coil spring 50 (drag force generating section) is arranged in the inner cavity 41c of the cylindrical section 41.

The shaft portion 42 includes a cylindrical shaft body 42a and a shaft base portion 42b provided integrally with the shaft body 42a at the other end of the shaft body 42a. The shaft body 42a is made to have a diameter that allows it to be inserted into the inner cavity 41c of the cylindrical portion 41. For example, the diameter of the shaft body 42a is set to be the same as the inner diameter of the cylindrical portion 41 (diameter of the inner cavity 41c), or smaller than the inner diameter of the cylindrical portion 41 by an amount of clearance.
The shaft base 42b has a diameter that is one size larger than the diameter of the shaft main body 42a, and the end surface opposite to the shaft main body 42a has a hemispherical shape. A spherical second engagement recess 42c is provided on the outer peripheral surface of the shaft base 42b. The second engagement protrusion 34 of the second attachment piece 32 is removably fitted into the second engagement recess 42c.

As shown in FIG. 3, when the display section 40 is attached to the mounting section 30, one end of the shaft body 42a is inserted into the inner cavity 41c of the cylindrical section 41, and the end surface 42d of the shaft body 42a is connected to the coil spring 50. It is in contact with the end surface 50a of.
Therefore, when the external force F acts on the insertion portion 20 and the connecting piece 23 is deformed to narrow the distance between the first piece 21 and the second piece 22, the shaft body 42a is moved into the inner cavity 41c of the cylindrical portion 41. the coil spring 50. The shaft body 42a enters into the inner cavity 41c of the cylindrical portion 41 in a state where the external force F is greater than the resultant force of the coil spring 50 and the connecting piece 23. Further, the shaft body 42a stops entering the inner cavity 41c in a state where the resultant force of the coil spring 50 and the connecting piece 23 and the external force F are balanced.

The indicator body 43 has a circular ring shape, and the shaft body 42a is inserted into the inner cavity 41c of the indicator body 43.
The inner diameter of the indicator body 43 is the same as the outer diameter of the shaft body 42a, or larger than the outer diameter of the shaft body 42a by the amount of clearance, and smaller than the outer diameter of the cylindrical portion 41 and the shaft base 42b. Therefore, the indicator body 43 is relatively movable along the longitudinal direction on the shaft body 42a.
The indicator body 43 and the shaft body 42a are configured to generate friction to the extent that the indicator body 43 does not move due to its own weight when the muscle strength display device 1 is tilted. For example, the indicator body 43 and the shaft body 42a may be made of a resin material that provides the necessary frictional force, or the surface roughness of the inner circumferential surface of the indicator body 43 and the outer circumferential surface of the shaft body 42a may be adjusted to obtain the necessary frictional force. It is finished to a roughness that can be used.

Therefore, when the distance between the first piece 21 and the second piece 22 is narrowed with the indicator body 43 in contact with the cylindrical part 41, the shaft body 42a enters the inner space 41c of the cylindrical part 41, and the indicator The body 43 relatively moves on the shaft body 42a toward the shaft base 42b. After that, when the distance between the first piece 21 and the second piece 22 is widened, the shaft main body 42a moves in a direction away from the cylindrical part 41, but the indicator body 43 moves in the direction away from the cylindrical part 41 together with the shaft main body 42a. do.
In this way, the position of the index body 43 on the shaft body 42a is determined by the distance between the first piece 21 and the second piece 22 when they are close to each other (when the pelvic floor muscles MS are contracted). It is determined based on.
Since the distance between the first piece 21 and the second piece 22 when they are close to each other changes depending on the muscle strength of the pelvic floor muscles MS, the position of the index body 43 on the shaft body 42a is Shows muscle strength.

In this embodiment, the display section 40 is configured to be detachable from the main body section 10 (the set of the insertion section 20 and the attachment section 30). Therefore, by removing the display section 40 from the main body section 10 before and after using the muscle strength display device 1, the main body section 10 can be washed alone (eg, washed with water). This prevents inconveniences such as water entering the display section 40 and causing the coil spring 50 to rust.

FIG. 4 is a diagram illustrating the replacement work of the first display section 40X and the second display section 40Y. FIG. 4 shows a first display section 40X that accommodates a first coil spring 50X (first drag generating section) that generates a standard drag force when compressed; A second display section 40Y that accommodates a second coil spring 50Y (second drag generating section) having different values is shown.
The first display section 40X and the second display section 40Y have the same structure except for the coil springs 50X and 50Y, that is, the structure of the cylinder section 41, the shaft section 42, and the index body 43. Therefore, the first display section 40X and the second display section 40Y are attached to the main body section 10 (attachment section 30) so that they can be replaced.

The muscle strength display device 1 in which the second display portion 40Y is attached to the main body portion 10 is different from the muscle strength display device 1 in which the first display portion 40X is attached to the main body portion 10. The external force F required to narrow the distance between the two is different.
For example, if the second coil spring 50Y has a larger resistance during compression than the first coil spring 50X, the external force F required to narrow the distance between the first piece 21 and the second piece 22 is (The strength of the pelvic floor muscles MS) also increases. Therefore, by selectively attaching and using the first display section 40X and the second display section 40Y to the main body section 10, it is possible to expand the measurement range of muscle strength. Further, when the second display section 40Y is attached to the main body section 10 and used, the effect of increasing the muscle strength of the pelvic floor muscles MS can be expected to be greater than when the first display section 40X is attached to the main body section 10 and used.
In addition, although two types of display parts 40X and 40Y were illustrated in the example of FIG. 4, it is not limited to this structure. For example, it is also possible to use three or more types of display sections 40 having coil springs 50 that have different resistance forces when compressed.

<How to use the muscle strength display device 1>
Next, how to use the muscle strength display device 1 will be explained. FIG. 5 is a diagram showing the state of the muscle strength display device 1 before insertion into the vagina VG, FIG. 6 is a diagram showing the state of the muscle strength display device 1 inserted into the vagina VG, and FIG. 8 is a diagram showing the state of the muscle strength display device 1 being inserted outside the vagina VG. It is a figure which shows the state pulled out.
As shown in FIG. 9(a), before the muscle strength display device 1 is used, the indicator body 43 moves along the shaft body 42a until it comes into contact with the other end 41a of the cylindrical portion 41. As shown in FIG. After completing the positioning of the index body 43, the insertion section 20 is inserted into the vagina VG. At this time, as shown in FIG. 5, the connecting piece 23 (folded part) of the insertion section 20 is positioned in front of the vaginal opening (vaginal vestibule) VO, and the insertion section 20 is slowly inserted into the vagina VG. In the muscle strength display device 1 according to the first embodiment, the outer surface of the connecting piece 23 is curved in an arc shape, and the outer surfaces of the first piece 21 and the second piece 22 are also curved, so that the insertion portion The stimulation given to the user during the insertion process into the vagina VG of 20 can be reduced.

As shown in FIG. 6, the insertion section 20 is inserted into the vagina VG until the attachment section 30 (each attachment piece 31, 32) hits the vaginal opening VO. In this inserted state, the connecting piece 23 is estimated to be located deeper inside the vagina VG than the pelvic floor muscles MS. Thereafter, the pelvic floor muscles MS are contracted as shown in FIG. As the pelvic floor muscles MS contract, an external force F acts, and the distance between the pieces 21 and 22 narrows as shown in FIG. 9(b).
When the distance between the two pieces 21 and 22 is narrowed, the shaft main body 42a enters the inner space 41c of the cylindrical portion 41 in the display section 40, and the position of the indicator body 43 on the shaft main body 42a moves. That is, the longitudinal position of the indicator body 43 in the shaft body 42a is determined according to the insertion depth of the shaft body 42a into the inner cavity 41c, and the deeper the insertion depth, the closer the position is to the shaft base 42b.

After sufficiently contracting the pelvic floor muscles MS, the user relaxes the pelvic floor muscles MS and withdraws the insertion section 20 from the vagina VG as shown in FIG. As shown in FIG. 9(c), since the external force F is not acting on the muscle force display device 1 removed from the vagina VG, both pieces 21 and 22 are affected by the elastic force of the connecting piece 23 and the restoring force of the coil spring 50. The gap between them becomes wider.
The shaft body 42a moves away from the cylindrical portion 41 as the distance between the two pieces 21 and 22 widens, and the index body 43 maintains its position when contracted due to friction between the shaft portion 42 and the shaft. 42.
That is, the position of the indicator body 43 on the shaft body 42a does not change even if the distance between the two pieces 21 and 22 increases. Therefore, when the distance between the two pieces 21 and 22 is widened, the position of the index body 43 on the shaft body 42a is determined by the value of the external force F received by the insertion section 20 due to the contraction of the pelvic floor muscles MS, that is, the pelvic floor The muscle strength of muscle MS is shown.
Therefore, the user can know the muscle strength of the pelvic floor muscles MS based on the position of the index body 43 on the shaft portion 42.

<Strength display device 1 according to other embodiments>
The muscle strength display device 1 according to the present invention is not limited to the muscle strength display device 1 according to the first embodiment described above. Muscle strength display devices 1', 1A, 1B, 1C, and 1D according to other embodiments will be described below. Note that the configuration of the muscle strength display devices 1, 1', 1A, 1B, 1C, and 1D according to one embodiment may be the same as the muscle strength display devices 1, 1', 1A, 1B, and 1C according to another embodiment unless there is a problem. , 1D.
FIG. 10(a) is a perspective view illustrating a muscle strength display device 1' according to a modification of the first embodiment, FIG. 10(b) is a sectional view of the muscle strength display device 1', and FIG. 11(a) is a second embodiment. Fig. 11(b) is an enlarged view of the display section included in the muscle strength display device 1A, and Fig. 12 is a perspective view of the muscle strength display device 1B according to a modification of the second embodiment. 13(a) is a perspective view of one side of the muscle strength display device 1C according to the third embodiment, FIG. 13(b) is a perspective view of the other side of the muscle strength display device 1C, and FIG. 14 is a modification of the third embodiment. FIG. 2 is a perspective view of a muscle strength display device 1D according to the present invention.

<Strength display device 1' according to a modification of the first embodiment>
Similarly to the muscle strength display device 1 according to the first embodiment, the muscle strength display device 1′ according to the modification of the first embodiment shown in FIG. , a display section 40' detachably attached to the insertion section 20', and a coil spring 50' disposed in an inner cavity 41c' of a cylindrical section 41' included in the display section 40'.
In particular, the muscle strength display device 1' according to the modified example has the first piece 21' and the second piece 22' arranged in parallel to each other, and the curvature of the connecting piece 23' is greater than that of the connecting piece 23 according to the first embodiment. This is different from the muscle strength display device 1 according to the first embodiment in that the muscle strength display device 1 is also larger. Further, the fact that the shaft body 42a' of the shaft portion 42' is thinner than the shaft body 42a according to the first embodiment, and the index body 43' is constituted by a C-shaped plate is also advantageous. This is different from display device 1.
In the muscle strength display device 1' having the above configuration, the first piece 21' and the second piece 22' are arranged parallel to each other, so that the insertion portion 20' is inserted into the vagina VG when an external force F is applied. It has the advantage that it is difficult to come off, and because the curvature of the connecting piece 23' is large, the inner circumferential surface of the connecting piece 23' can be easily cleaned.

<Strength display device 1A according to second embodiment>
A muscle strength display device 1A according to the second embodiment shown in FIG. 11 includes a main body portion 10A configured similarly to the muscle strength display device 1′ of FIG. 10, and a display portion 40A has a ratchet structure. , which is different from the muscle strength display device 1 of the first embodiment.
In the muscle strength display device 1A according to the second embodiment, the connecting piece 23A of the insertion section 20A corresponds to a drag generation section and generates a drag force against the external force F. The display section 40A includes a claw portion 41A that protrudes toward the second piece 22A on the inner surface of the first piece 21A, and a groove portion 42A that protrudes toward the first piece 21A on the inner surface of the second piece 22A. (serrations).

The claw portion 41A includes a prismatic claw main body 411A and a substantially triangular prism-shaped claw 412A that projects downward at the tip of the claw main body 411A. The claw portion 41A is made of resin, and in this embodiment is molded integrally with the first piece 21A.
The groove portion 42A includes a prismatic groove main body 421A and a plurality of saw blade-shaped grooves 422A formed on the upper surface of the groove main body 421A. Each groove 422A has a shape in which the claw 412A can fit, and has a slope 423A (first surface) that allows the claw 412A to move toward the second piece 22A side, and a slope 423A (first surface) that allows the claw 412A to move toward the second piece 22A side, and a slope 423A (first surface) that allows the claw 412A to move toward the second piece 22A side. It is formed by a hanging surface 424A (second surface) that prevents movement. The groove portion 42A is made of resin, and in this embodiment is molded integrally with the second piece 22A.

In the muscle strength display device 1A according to the second embodiment, when the user contracts the pelvic floor muscles MS with the entire insertion portion 20A inserted into the vagina VG, the first piece 21A and the second piece 22A An external force F acts in a direction that narrows the distance between them, and the connecting piece 23A (drag generation section) generates a drag force.
When the external force F is larger than the drag force, the distance between the two pieces 21A and 22A is narrowed, and the claw portion 41A moves on the groove portion 42A toward the second piece 22A side. At this time, the claws 412A of the claw portion 41A move over each groove 422A provided on the upper surface of the groove main body 421A.

When the user relaxes the pelvic floor muscles MS and the insertion section 20A is removed from the vagina VG, the restoring force of the connecting piece 23A acts on the first piece 21A and the second piece 22A, but the claw 412A gets caught in the groove 422A. Therefore, the distance between the two pieces 21A and 22A remains narrow.
Therefore, the position of the claw 412A (the groove 422A in which the claw 412A is caught) indicates the value of the external force F (muscle strength of the pelvic floor muscle MS) that the insertion portion 20A receives due to the contraction of the pelvic floor muscle MS. Then, the user can know the muscle strength of the pelvic floor muscles MS based on the position of the nail 412A.

<Muscle strength display device 1B according to a modification of the second embodiment>
A muscle strength display device 1B according to a modification of the second embodiment shown in FIG. 12 is different from the muscle strength display devices 1, 1', and 1A described above particularly in the configurations of an insertion section 20B and a display section 40B.
For example, the insertion portion 20B is different in that the first piece 21B and the second piece 22B are connected by a hinge mechanism 23B and can be opened and closed around the hinge mechanism 23B. Regarding the display section 40B, the shaft section 41B includes a plurality of large diameter sections 411B and a plurality of small diameter sections 412B alternately provided along the axial direction, and an insertion hole 421B into which the shaft section 41B is inserted and elastically deformed. The difference is that the hole 42B is provided with a hole 42B.

In the muscle strength display device 1B according to the modification of the second embodiment, the display section 40B also functions as a drag generation section. For example, when an external force F acts on the first piece 21B and the second piece 22B in the direction of narrowing the distance between them due to contraction of the pelvic floor muscles MS, the large diameter portion 411B and the insertion hole 421B come into contact with each other to generate a drag force. When the external force F overcomes the drag and the insertion hole 421B passes through the large diameter section 411B, the insertion hole 421B moves to the adjacent small diameter section 412B and comes into contact with the next large diameter section 411B. Thereafter, the insertion hole 421B passes through the large diameter portion 411B in order until the above-mentioned external force F and the drag force are balanced.

Even if the user relaxes the pelvic floor muscles MS, the positional relationship between the insertion hole 421B and the shaft portion 41B maintains a state in which the distance between the first piece 21B and the second piece 22B is narrowed. Therefore, the position of the hole 42B (insertion hole 421B) on the shaft portion 41B indicates the value of the external force F (muscle strength of the pelvic floor muscle MS) that the insertion portion 20B receives due to contraction of the pelvic floor muscle MS. Therefore, the user can know the muscle strength of the pelvic floor muscles MS based on the longitudinal position of the hole 42B on the shaft 41B.
In addition, in the muscle strength display device 1B, by adjusting the position of the insertion hole 421B on the shaft portion 41B before insertion into the vagina VG, the interval between each piece 21B and 22B can be determined to be an interval suitable for the user. I can do it.

<Muscle strength display device 1C according to third embodiment>
A muscle strength display device 1C according to the third embodiment shown in FIG. 13 is different from the muscle strength display devices 1, 1', 1A, and 1B described above in that it includes a pointer-type display section 40C.
In the muscle strength display device 1C according to the third embodiment, the insertion portion 20C connects the first piece 21C and the second piece 22C so as to be openable and closable by a hinge mechanism 23C, and has a space between the first piece 21C and the second piece 22C. A coil spring 50C is attached as a drag generating member. The coil spring 50C is attached so that the distance from the distal end portion (the portion on the hinge mechanism 23C side) of the insertion portion 20C can be changed in multiple stages. With this configuration, in the muscle force display device 1C, the magnitude of the drag force can be changed depending on the attachment position of the coil spring 50C (distance from the distal end of the insertion portion 20C).
A first handle 31C is provided extending laterally on the side surface on the rear end side of the first piece 21C, and a second handle 32C is provided extending laterally on the side surface on the rear end side of the second piece 22C. These first handle 31C and second handle 32C are parts that are held by the user, and are located outside the vagina VG when the insertion section 20C is inserted into the vagina VG.

The display section 40C includes a rack gear 41C provided at the rear end of the first piece 21C (an end opposite to the insertion end) and a rear end of the second piece 22C (an end opposite to the insertion end). ), a drive needle 43C that is rotationally driven in both forward and reverse directions by the pinion gear 42C, and a drive needle 43C that is rotated in the forward direction by the drive needle 43C when the drive needle 43C rotates forward; It includes a driven needle 44C that is not rotated during reverse rotation, a guide groove 451C that guides the driving needle 43C and the driven needle 44C, and a fan-shaped panel 45C on which a scale 452C is formed.
The guide groove 451C provided in the panel 45C is formed in an arc shape along the outer edge, into which the tip of the drive needle 43C and the tip of the driven needle 44C are fitted. In this embodiment, a handle 46C that is gripped by the user's fingers is provided at the tip of the drive needle 43C. Additionally, saw blade-shaped unevenness is formed on the inner peripheral edge of the guide groove portion 451C. The saw blade-shaped unevenness is provided because it is easy to move each needle 43C, 44C in the forward direction, and human operation is required to move each needle 43C, 44C in the opposite direction.

In the muscle strength display device 1C according to the third embodiment, the coil spring 50C generates a resistance force when an external force F is applied in a direction to narrow the distance between the two pieces 21C and 22C due to contraction of the pelvic floor muscles MS. When the external force F exceeds the drag force, the distance between the pieces 21C and 22C is narrowed, and the movement of the rack gear 41C causes the pinion gear 42C to rotate in the forward direction. As the pinion gear 42C rotates, the driving needle 43C and the driven needle 44C rotate in the forward direction. Then, when the external force F and the drag force are balanced, the driving needle 43C and the driven needle 44C stop rotating in the forward direction.
When the user relaxes the pelvic floor muscles MS, the restoring force of the coil spring 50C widens the gap between the two pieces 21C and 22C, and the movement of the rack gear 41C causes the pinion gear 42C to rotate in the opposite direction. As the pinion gear 42C rotates, the drive needle 43C rotates in the opposite direction, but the driven needle 44C fits into the guide groove 451C and does not rotate.
Therefore, the angle of the driven needle 44C indicates the value of the external force F (muscle strength of the pelvic floor muscles MS) that the insertion section 20C receives due to the contraction of the pelvic floor muscles MS.
Therefore, the user can know the muscle strength of the pelvic floor muscles MS based on the angle of the driven needle 44C.

<Muscle strength display device 1D according to a modification of the third embodiment>
The muscle strength display device 1D according to the modification shown in FIG. 14 includes a pointer-type display section 40D, and functions as a drag generation section between the first piece 21D and the second piece 22D of the insertion section 20D. It is the same as the muscle strength display device 1C in FIG. 13 in that it includes a coil spring 50D.
In the muscle strength display device 1D according to the modification, the rack gear 41D is provided laterally from the rear end of the first piece 21D, and the prismatic guide shaft 46D is integrally formed with the rack gear 41D and extends along the longitudinal direction of the rack gear 41D. A plurality of engagement recesses 461D are provided at a predetermined pitch on the side surface of the guide shaft 46D. In this embodiment, the engagement recess 461D is a shallow curved concave surface.
On the other hand, at the rear end of the second piece 22D, there is a rectangular guide tube portion 47D through which a guide shaft 46D is inserted, a pinion gear 42D that rotates as the rack gear 41D moves, and a pointer 43D that is rotationally driven by the pinion gear 42D. and a fan-shaped panel 45D on which a scale 452D is formed.
Further, the guide tube portion 47D is provided with an engagement protrusion 471D that can be freely fitted into the engagement recess 461D. In this embodiment, the engagement protrusion 471D has a hemispherical shape. Therefore, the engagement protrusion 471D repeatedly engages and disengages from the engagement recess 461D as the guide shaft 46D moves in the longitudinal direction.

In the muscle strength display device 1D according to the modified example, when an external force F is applied in a direction to narrow the distance between the pieces 21D and 22D due to contraction of the pelvic floor muscles MS, the coil spring 50D generates a resistance force. Further, a drag force is also generated by the engagement protrusion 471D fitting into the engagement recess 461D.
When the external force F overcomes the drag force, the distance between the pieces 21D and 22D is narrowed, the rack gear 41D moves, and the engagement protrusion 471D moves away from the engagement recess 461D and fits into the adjacent engagement protrusion 471D. As the rack gear 41D moves, the pinion gear 42D rotates in the forward direction, and the pointer 43D also rotates in the forward direction. Then, when the external force F and the drag force are balanced, the pointer 43D stops rotating in the forward direction.

When the user relaxes the pelvic floor muscles MS, the restoring force of the coil spring 50D acts on the first piece 21D and the second piece 22D, but because the engagement protrusion 471D is fitted into the engagement recess 461D. , the distance between the first piece 21D and the second piece 22D remains narrow.
Therefore, the angle of the pointer 43D indicates the value of the external force F (muscle strength of the pelvic floor muscles MS) that the insertion portion 20C receives due to the contraction of the pelvic floor muscles MS.
Therefore, the user can know the muscle strength of the pelvic floor muscles MS based on the angle of the driven needle 44C.

[Summary of embodiments, actions, and effects of the present invention]
<First embodiment>
The muscle strength display devices 1, 1', 1A, 1B, 1C, and 1D according to the present embodiment are inserted into the vagina VG in a detachable manner, and have insertion portions 20, 20 that receive external force F as the pelvic floor muscles MS contract. ', 20A, 20B, 20C, 20D, and a drag generating section (coil springs 50, 50', 50C, 50D, 50X, 50Y, connecting pieces 23, 23', 23A, 40A, 40B) that generates a drag against external force F, The insertion section includes display sections 40, 40', 40A, 40B, 40C, and 40D that display the value of the external force F as the muscle strength of the pelvic floor muscles MS, and the insertion section includes a first piece (21, 21', 21A, 21B, 21C, 21D), and a second piece (22, 22', 22A, 22B, 22C, 22D) that faces the first piece with a space therebetween and is coupled to the first piece so that the space can be freely changed. , the drag generation unit generates a drag force when an external force (external force F) in the direction of narrowing the interval acts on the first piece 21 and the second piece 22, and the display unit generates a drag force on the first piece 21 and the second piece 22. The present invention is characterized by having a configuration in which the value of the external force F is displayed based on the interval during contraction of the vagina VG, and the value of the external force F can be displayed even after the insertion portion 20C is removed from the vagina VG.
According to the muscle strength display device according to this embodiment, the value of the external force F displayed on the display section (the position of the indicator body 43, 43' on the shaft part 42, 42', the position of the groove 422A in which the claw 412A is caught, The muscle strength of the pelvic floor muscles MS can be determined by the longitudinal position of the hole 42B on the shaft 41B, the angle of the driven needle 44C, and the pointer 43D. Furthermore, since no electronic parts are provided in the insertion section, the user is less likely to feel uneasy, and there is no need for a tube, a pressure gauge, or the like. Therefore, it is possible to improve the usability of the muscle strength display device.

<Second embodiment>
The muscle strength display device 1 according to this embodiment includes a first mounting piece 31 that is provided on the first piece 21 and is located outside the vagina VG with the insertion portion 20 inserted into the vagina VG, and a second piece. 22 and located outside the vagina VG with the insertion section 20 inserted into the vagina VG. The cylinder part 41 attached to one of the two mounting pieces 32, the rod-shaped shaft part 42 attached to the other of the first mounting piece 31 and the second mounting piece 32, and the shaft part 42 with respect to the shaft part 42. An indicator body 43 is attached so as to be relatively movable along the longitudinal direction, and the shaft part 42 is inserted into the inner cavity 41c of the cylinder part 41, and the insertion depth of the shaft part 42 into the inner cavity 41c is The narrower the distance between the first attachment piece 31 and the second attachment piece 32, the larger the distance between the first attachment piece 31 and the second attachment piece 32, and the indicator body 43 comes into contact with the end 41a of the cylindrical part 41 as it enters the inner space 41c of the shaft part 42, and the indicator body The longitudinal position of the shaft portion 43 is determined according to the insertion depth of the shaft portion 42.
According to the muscle strength display device 1 according to this embodiment, the display section 40 is configured by the cylinder section 41, the shaft section 42, and the indicator body 43, and the position of the indicator body 43 on the shaft section 42 is determined by the insertion depth of the shaft section 42. The configuration of the display section 40 can be simplified.

<Third embodiment>
In the muscle strength display device 1 according to this embodiment, the indicator body 43 has a ring shape into which the shaft portion 42 is inserted, and the longitudinal position of the shaft portion 42 of the indicator body 43 is determined between the inner circumferential surface of the indicator body 43 and the axis. It is characterized in that the insertion part 20C is maintained even after being removed from the vagina VG due to friction between the part 42 and the outer circumferential surface.
According to the muscle strength display device 1 according to this embodiment, the position of the indicator body 43 is maintained by friction, so that the configuration of the display section 40 can be simplified.

<Fourth embodiment>
The muscle force display device 1 according to this aspect is characterized in that the drag generating section is a coil spring 50 that is provided in the inner cavity 41c of the cylindrical part 41 and is compressed by the shaft part 42 that has entered the inner cavity 41c. do.
According to the muscle force display device 1 according to this embodiment, the drag generating section is constituted by the coil spring 50, and the coil spring 50 is provided in the inner cavity 41c of the cylindrical portion 41, so that the device can be miniaturized.

<Fifth embodiment>
The muscle strength display device 1 according to this aspect is characterized in that the display section 40 is detachably attached to the first attachment piece 31 and the second attachment piece 32.
According to the muscle strength display device 1 according to this embodiment, the display section 40 can be separated from the main body section 10 when cleaning the main body section 10 (each attachment piece 31, 32 and the insertion section 20). Therefore, cleaning of the main body portion 10 is easy.

<Sixth embodiment>
In the muscle strength display device 1 according to this embodiment, the display section 40 has a first display section 40X in which the first coil spring 50X is provided in the inner space 41c, and the first display section 40X has a different resistance force during compression from the first coil spring 50X. A second display section 40Y includes a second coil spring 50Y provided in an inner cavity 41c, and the first display section 40X and the second display section 40Y are connected to a first mounting piece 31 and a second display section 40Y. It is characterized in that it can be attached to the attachment piece 32 in a replaceable manner.
According to the muscle strength display device 1 according to this embodiment, by selectively attaching the first display section 40X and the second display section 40Y, the external force F required to narrow the distance between the two pieces 21 and 22, In other words, the load applied to the pelvic floor muscles MS can be changed.

DESCRIPTION OF SYMBOLS 1... Force display device, 10... Main body part (insertion part, attachment part), 20... Insertion part, 21... First piece, 22... Second piece, 23... Connection piece, 30... Mounting part, 31... First attachment piece, 32...second mounting piece, 33...first engagement protrusion, 34...second engagement protrusion, 35...gripping part, 40...display part, 40X...first display part, 40Y...second display part , 41...cylindrical part, 41a...other end of the cylinder part, 41b...first engagement recess, 41c...inner cavity of the cylinder part, 42...shaft part, 42a...shaft body, 42b...shaft base, 42c...th 2 engagement recess, 42d... end face of shaft body, 43... index body, 50... coil spring, 50X... first coil spring, 50Y... second coil spring, 50a... end face of coil spring, 1'... of the first embodiment Muscle strength display device according to a modified example, 10'... Main body part, 20'... Insertion part, 21'... First piece, 22'... Second piece, 23'... Connection piece, 30'... Mounting part, 40'... Display part, 41'...cylindrical part, 42'...shaft part, 42a'...shaft body, 43'...indicator body, 41c'...inner cavity of cylinder part, 50'...coil spring, 1A...muscle force according to the second embodiment Display device, 10A... Main body part, 20A... Insertion part, 21A... First piece, 22A... Second piece, 23A... Connection piece, 40A... Display part, 41A... Claw part, 411A... Claw part main body, 412A... Claw, 42A...Groove portion, 421A...Groove body, 422A...Groove, 423A...Slope, 424A...Descent surface, 1B...Muscle force display device according to the modification of the second embodiment, 20B...Insertion part, 21B...First piece, 22B... Second piece, 23B...hinge mechanism, 40B...display section, 41B...shaft section, 411B...large diameter section, 412B...small diameter section, 42B...hole, 421B...insertion hole, 1C...muscle force display according to the third embodiment Device, 20C...insertion part, 21C...first piece, 22C...second piece, 23C...hinge mechanism, 31C...first handle, 40C...display part, 41C...rack gear, 42C...pinion gear, 43C...drive needle, 44C ...Followed needle, 45C...Panel, 451C...Guide groove, 452C...Scale, 46C...Handle, 50C...Coil spring, 1D...Muscle force display device according to the modification of the third embodiment, 20D...Insertion part, 21D...First piece , 22D...Second piece, 40D...Display part, 41D...Rack gear, 42D...Pinion gear, 43D...Pointer, 45D...Panel, 452D...Scale, 47D...Guiding cylinder part, 471D...Engaging protrusion, 50D...Coil spring, VG ...vagina, VO...vaginal opening (vaginal vestibule), MS...pelvic floor muscles, RS1...first resin, RS2...second resin, F...external force

In order to solve the above problems, a muscle strength display device according to the present invention includes a first piece, which is arranged facing each other so that the distance between the tips is equal to or less than the distance between the rear ends, and the tips are connected to each other; an insertion section that is detachably inserted into the vagina from the distal end side and receives external force due to contraction of the pelvic floor muscles , thereby narrowing the distance between the first and second pieces ; a drag generating unit that generates a drag force when the external force acts on the first piece and the second piece ; a display unit that displays the value of the external force as the muscle strength of the pelvic floor muscles; and a rear part of the first piece. an end, and a first attachment piece and a second attachment piece provided at the rear end of the second piece and located outside the vagina with the insertion portion inserted into the inside of the vagina, The display unit is attached across the first attachment piece and the second attachment piece, and is configured to adjust the external force based on the distance between the first piece and the second piece when the pelvic floor muscle contracts. The device is characterized by having a configuration in which the value of the external force is displayed, and the value of the external force can be displayed even after the insertion portion is removed from the vagina.

Claims (6)

an insertion section that is removably inserted into the vagina and receives external force as the pelvic floor muscles contract;
a drag generating section that generates a drag force against the external force;
a display unit that displays the value of the external force as the muscle strength of the pelvic floor muscles;
Equipped with
The insertion portion includes a first piece, and a second piece that faces the first piece with a space therebetween and is coupled to the first piece so that the space can be freely changed,
The drag generating unit generates the drag when the external force in the direction of narrowing the distance acts on the first piece and the second piece,
The display section has a configuration that displays the value of the external force based on the interval when the pelvic floor muscles contract, and is capable of displaying the value of the external force even after the insertion section is removed from the vagina. A muscle strength display device characterized by: a first attachment piece provided on the first piece and located outside the vagina with the insertion portion inserted into the vagina;
a second attachment piece provided on the second piece and located outside the vagina with the insertion portion inserted into the vagina;
Equipped with
The display section is
a cylindrical portion attached to one of the first mounting piece and the second mounting piece;
a rod-shaped shaft portion attached to the other of the first attachment piece and the second attachment piece;
an indicator body attached to the shaft part so as to be relatively movable along the longitudinal direction of the shaft part,
The shaft portion is inserted into the inner cavity of the cylindrical portion, and the insertion depth of the shaft portion into the inner cavity is greater as the interval is narrower;
The indicator body comes into contact with an end of the cylindrical part as the shaft part enters the inner cavity,
The muscle strength display device according to claim 1, wherein the position of the shaft portion of the indicator body in the longitudinal direction is determined according to the insertion depth of the shaft portion. The indicator body has a ring shape into which the shaft portion is inserted,
The position of the indicator body is maintained even after the insertion portion is removed from the vagina due to friction between the inner circumferential surface of the indicator body and the outer circumferential surface of the shaft portion. The muscle strength display device according to 2. The muscular strength display device according to claim 2 or 3, wherein the drag generating section is a spring that is provided in the inner cavity and is compressed by the shaft section that has entered the inner cavity. The muscle strength display device according to claim 2 or 3, wherein the display section is detachably attached to the first attachment piece and the second attachment piece. The display unit includes a first display unit in which a first spring is provided in the inner cavity, and a second spring in which the resistance force when compressed is different from that of the first spring is provided in the inner cavity. a second display section,
The muscle strength display device according to claim 4, wherein the first display section and the second display section are replaceably attached to the first attachment piece and the second attachment piece. .

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