Muscle strength display device

Abstract

The invention relates to a muscle strength display device, and aims to improve usability of the muscle strength display device for displaying the muscle strength of pelvic floor muscles. The device is provided with: an insertion part (20) which is detachably inserted into the vagina and receives an external force in accordance with the contraction of the pelvic floor muscle; a resistance generation part (coil spring (50)) which generates resistance against the external force; and a display part (40) which displays the value of the external force as the muscular strength of the pelvic floor muscle. The insertion part (20) is provided with a first sheet (21) and a second sheet (22), the second sheet (22) and the first sheet (21) are oppositely arranged at an interval, and the interval of the second sheet (22) and the first sheet (21) can be freely changed; the resistance generating part generates resistance when an external force in the direction of narrowing the interval acts on the first sheet (21) and the second sheet (22). The display unit (40) is configured so as to display the value of the external force on the basis of the interval when the pelvic floor muscle contracts, and so as to be able to display the value of the external force even after the insertion unit (20) is pulled out of the vagina.

Description

Technical Field

[0001] The invention relates to a muscle strength display device for displaying the muscle strength of pelvic floor muscles. Background Art

[0002] The pelvic floor muscles are the hanging mesh muscles at the bottom of the pelvis, responsible for supporting the internal organs and controlling excretion. By strengthening the pelvic floor muscles, it is possible to prevent sagging of the internal organs and prevent urinary incontinence. About 40% of adult women have experienced urinary incontinence, and severe cases can seriously affect the quality of life. As a training for improving the muscle strength of the pelvic floor muscles, for example, "pelvic floor muscle exercises" ("Kegel exercises") in which the pelvic floor muscles are voluntarily contracted are well known.

[0003] On the other hand, various devices for enhancing the muscle strength of the pelvic floor muscles have been proposed. For example, the motion device described in Patent Document 1 is produced by folding an elastic strip plate in the middle of the length direction into a substantially V-shape. The motion device of Patent Document 1 includes a first portion and a second portion with the folded portion as a boundary, and the interval between the first portion and the second portion gradually increases as the distance from the folded portion increases. 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 as the leading part. Since the folded part of the exercise device has elasticity, an external force greater than the elastic force of the folded part is required to reduce the interval between the first part and the second part. Therefore, when the pelvic floor muscles are contracted with the first and second parts inserted into the vagina, the elastic force (resistance) of the folded portion acts on the pelvic floor muscles, thereby increasing the strength of the muscles.

[0004] The training device disclosed in Patent Document 2 includes a round bar-shaped measuring unit with a pressure-sensitive sensor, and a processing and display unit electrically connected to the measuring unit via a connecting unit (communication line). In order to train the pelvic floor muscles using the training device of Patent Document 2, the measuring part is inserted into the rectum from the anus, and the pelvic floor muscles are contracted by tightening the anus. When the pelvic floor muscles are contracted, the resistance from the measuring part acts on the pelvic floor muscles, thereby increasing muscle strength. During training, the processing and display unit extracts and displays information indicating the movement component of the pelvic floor muscles based on the signal obtained from the pressure-sensitive sensor. Therefore, in the training device of Patent Document 2, training is objectively evaluated based on the movement of the pelvic floor muscles.

[0005] The training device disclosed in Patent Document 3 includes a long and thin cylindrical tube body made of elastic body and a pressure gauge connected to the tube body via a bendable tube. In order to train the pelvic floor muscles using the training device of Patent Document 3, the tube is inserted into the vagina to contract the pelvic floor muscles by shrinking the diameter of the tube in the vagina. When the pelvic floor muscles are contracted, the elastic force (resistance) of the tube acts on the pelvic floor muscles, thereby increasing the strength of the muscles. During training, the pressure gauge indicates the air pressure in the tube as muscle strength. Therefore, in the training device of Patent Document 3, the training (muscle strength of the pelvic floor muscles) is objectively evaluated based on the air pressure in the tube. Prior art literature Patent Literature

[0006] Patent Document 1: Japanese Patent No. 4477807 Patent Document 2: Japanese Patent No. 3472551 Patent Document 3: Japanese Patent Application Laid-Open No. 52-144190 Summary of the invention Problems to be solved by the invention

[0007] In the device of patent document 1, although the muscle strength of the pelvic floor muscles can be improved, it is difficult to objectively evaluate the muscle strength of the pelvic floor muscles. In the device of patent document 2, the muscle strength of the pelvic floor muscles can be objectively evaluated, but since electronic components (pressure-sensitive sensors, etc.) are installed in the measuring part inserted into the rectum, the user may feel uneasy. In addition, it is difficult to insert the rod-shaped measuring part into the rectum. In the device of patent document 3, the muscle strength of the pelvic floor muscles can be objectively evaluated, but since the tube body and the pressure gauge are connected by a bendable tube, the tube and the pressure gauge will become obstacles during use. The present invention has been proposed in view of the above circumstances, and an object of the present invention is to improve the usability of a muscle strength display device for displaying the muscle strength of the pelvic floor muscles. Means for solving problems

[0008] In order to solve the above-mentioned problems, the present invention provides a muscle strength display device, characterized in that it comprises: an insertion part that can be freely loaded and detached inserted into the vagina and is subjected to external force as the pelvic floor muscles contract, a resistance generating part that generates resistance against the external force, and a display part that displays the value of the external force as the muscle strength of the pelvic floor muscles, the insertion part comprises a first piece and a second piece that is opposite to the first piece at a distance and is connected to the first piece so that the distance can be freely changed, when the external force in the direction of reducing the distance acts on the first piece and the second piece, the resistance generating part generates the resistance, and the display part has the following structure: the value of the external force is displayed according to the distance when the pelvic floor muscles contract, and the value of the external force can also be displayed after the insertion part is pulled out of the vagina. Effects of the Invention

[0009] According to the muscle strength display device of the present invention, it is possible to improve the usability of the muscle strength display device for displaying the muscle strength of the pelvic floor muscles. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a perspective view of the muscle strength display device according to the first embodiment. Figure 2 It is a front view of the muscle strength display device according to the first embodiment. Figure 3 It is a cross-sectional view of the muscle strength display device according to the first embodiment. Figure 4 It is an explanatory diagram of the swapping operation of the first display unit and the second display unit. Figure 5 This is a diagram showing a state before the muscle strength display device according to the first embodiment is inserted into the vagina. Figure 6 This is a diagram showing a state in which the muscle strength display device according to the first embodiment is inserted into the vagina. Figure 7 It is a diagram showing the state of the pelvic floor muscles when they are contracted. Figure 8 This is a diagram showing a state where the muscle strength display device according to the first embodiment is pulled out of the vagina. Fig. 9 This is a diagram illustrating the movement of the indicator body. Fig. 9 (a) shows the state before the muscle strength display device is inserted. Fig. 9 (b) shows a state where the interval between the first sheet and the second sheet is narrowed. Fig. 9 (c) shows the state after the muscle strength display device is pulled out of the vagina. Fig.10 is an explanatory diagram of a muscle strength display device according to a modified example of the first embodiment, Fig.10 (a) in the figure is a stereogram. Fig.10 (b) is a cross-sectional view. Fig.11 (a) is a perspective view of a muscle strength display device according to a second embodiment. Fig.11 (b) is an enlarged view of the display portion. Fig.12 It is a perspective view of a muscle strength display device according to a modified example of the second embodiment. Fig.13 is an explanatory diagram of a muscle strength display device according to a third embodiment. Fig.13 (a) is a stereogram from one side. Fig.13 (b) is a stereoscopic view of the other side. Fig.14 It is a perspective view of a muscle strength display device according to a modified example of the third embodiment. DETAILED DESCRIPTION

[0011] <Overview and Features of Muscle Strength Display Device> Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. However, the components, types, combinations, shapes, relative arrangements, etc. described in the embodiments are not intended to limit the scope of the present invention unless otherwise specified, and are merely illustrative examples. First, the overview and features of the muscle strength display device 1 will be described. Figures 1 to 3 It is a perspective view, a front view, and a cross-sectional view of the muscle strength display device 1 according to the first embodiment.

[0012] like Figure 1 to Figure 3 As shown, the muscle strength display device 1 includes: a freely removable insertable vagina VG (refer to Figure 5 etc.) and the insertion portion 20 inside, indicating the pelvic floor muscle MS (refer to Figure 5 The display unit 40 for displaying muscle strength (such as muscle strength of the ... The insertion portion 20 includes: a first piece 21 composed of a narrow strip-shaped plate material, a second piece 22 composed of a narrow strip-shaped plate material and arranged opposite to the first piece 21 in a roughly V-shape with a gap therebetween, and a connecting piece 23 connecting the ends of the side (the front end side) where the gap between the first piece 21 and the second piece 22 is narrower. 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. The first mounting piece 31 and the second mounting piece 32 are respectively bent and extended continuously outward from the rear end portions of the first piece 21 and the second piece 22. When the insertion portion 20 is inserted into the vagina VG, the first mounting piece 31 and the second mounting piece 32 are located outside the vagina VG, and the user can hold the first mounting piece 31 and the second mounting piece 32 when installing and removing the muscle strength display device 1.

[0013] The display unit 40 is mounted astride the first mounting piece 31 and the second mounting piece 32 , and displays the value of the external force applied to the insertion portion 20 by the contraction of the pelvic floor muscles MS as the muscle strength of the pelvic floor muscles MS. The illustrated display unit 40 includes: a cylindrical barrel 41 with one end in the longitudinal direction closed, a round rod-shaped shaft 42 inserted into the inside from the opening at the other end of the barrel 41, and a ring-shaped (circular ring-shaped) indicator body 43. The barrel 41 is mounted on the first mounting piece 31 by being engaged with the first engaging protrusion 33, and the other end 41a (opening) in the longitudinal direction thereof extends toward the second mounting piece 32. The shaft 42 is mounted on the second mounting piece 32 by being engaged with the second engaging protrusion 34, and one end in the longitudinal direction thereof can be freely inserted into the inner cavity 41c of the barrel 41. In addition, the barrel 41 can be mounted on the second mounting piece 32, and the shaft 42 can be mounted on the first mounting piece 31. like Figure 3 As shown, the indicator body 43 is inserted through the shaft portion in a state where it is supported by the outer peripheral surface of the shaft portion 42 so as to be freely supported in the axial direction and can move relatively freely along the length direction of the shaft portion 42. A coil spring 50 (resistance generating part) is arranged in the inner cavity 41c of the cylinder portion 41, and the end face 50a of the coil spring 50 abuts against the end face of the shaft portion 42 (the end face 42d of the shaft body 42a). The shaft portion 42 is urged by the coil spring 50 in a direction away from the cylinder portion 41. In addition, the resistance generating portion is not limited to the coil spring 50, and various elastic bodies such as rubber and leaf springs can be used.

[0014] Next, an outline of how to use the muscle strength display device 1 will be described. Figure 7 is a diagram showing the state of the pelvic floor muscles when they are contracted. Fig. 9 (a) is a diagram showing a state before the muscle strength display device is inserted, Fig. 9 (b) is a diagram showing that the interval between the first sheet and the second sheet is narrowed, Fig. 9 (c) is a diagram showing a state where the muscle strength display device is pulled out of the vagina. like Fig. 9 As shown in (a), before using the muscle strength display device 1, the indicator body 43 is manually placed at a position (initial position) in contact with the other end 41a of the tube 41. When using the muscle strength display device 1, the user inserts the insertion part 20 into the vagina VG from the connecting piece 23 side (the folded part side) while keeping the indicator body 43 at the initial position. like Figure 7 As shown in FIG. 1 , when the entire insertion portion 20 is inserted into the vagina VG, when the user contracts the pelvic floor muscle MS, as shown in FIG. Fig. 9As shown in (b), an external force F in a direction of narrowing the gap between the first sheet 21 and the second sheet 22 acts on the first sheet 21 and the second sheet 22, and the shaft portion 42 of the display portion 40 is pushed into the inner cavity 41c of the cylinder portion 41. At this time, the coil spring 50 disposed between the cylinder portion 41 and the shaft portion 42 generates resistance. When the external force F (the contraction force of the pelvic floor muscle MS) is stronger than the resistance of the coil spring 50, the gap between the first sheet 21 and the second sheet 22 is reduced, and the shaft portion 42 enters the inner cavity 41c of the cylinder portion 41.

[0015] Since the indicator body 43 is in contact with the other end 41a of the tube 41, as the shaft 42 enters the inner cavity 41c, the indicator body 43 moves relatively along the length direction of the shaft 42. Therefore, the position of the indicator body 43 on the shaft 42 (the amount of movement of the indicator body 43 on the shaft 42) is determined by the interval between the first sheet 21 and the second sheet 22 when the pelvic floor muscle MS contracts. Then, the entry of the shaft portion 42 into the inner cavity 41 c stops due to the balance between the external force F and the resistance of the coil spring 50 .

[0016] When the user relaxes the pelvic floor muscle MS and pulls the insertion part 20 out of the vagina VG, the interval between the first sheet 21 and the second sheet 22 is expanded by the elastic force of the connecting sheet 23 and the restoring force of the coil spring 50. When the interval between the first sheet 21 and the second sheet 22 is expanded, the shaft portion 42 of the display portion 40 moves in the opposite direction (the direction away from the cylinder portion 41). At this time, due to the friction between the inner circumferential surface of the indicator body 43 and the outer circumferential surface of the shaft portion 42, the indicator body 43 moves together with the shaft portion 42 while maintaining the position when contracted. That is, the friction 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 that the above operation can be achieved. When the insertion part 20 is pulled out of the vagina VG, the position of the indicator body 43 on the shaft 42 indicates the value of the external force F (muscle strength of the pelvic floor muscles MS) applied to the insertion part 20 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 position of the indicator body 43 on the shaft 42. According to the muscle strength display device 1 having the above-described structure, since the insertion portion 20 does not include electronic components and the display portion 40 does not include a tube or a pressure gauge, the usability can be improved.

[0017] <Detailed Description of Muscle Strength Display Device 1 of First Embodiment> Hereinafter, the muscle strength display device 1 in the first embodiment will be described in detail. Figure 1 to Figure 3 As shown, the muscle strength display device 1 includes an insertion portion 20 , a mounting portion 30 , and a display portion 40 . The insertion portion 20 is made of a resin having elasticity and is formed integrally with the mounting portion 30. For convenience, the combination of the insertion portion 20 and the mounting portion 30 is also referred to as the main body 10. The insertion portion 20 includes a first piece 21 and a second piece 22 connected in a substantially V-shape by a connecting piece 23. Therefore, the interval between the first piece 21 and the second piece 22 is the narrowest on the connecting piece 23 side and gradually widens as it moves away from the connecting piece 23.

[0018] The first sheet 21 and the second sheet 22 are narrow strip-shaped plates, such as Figure 1 As shown in the enlarged cross-sectional view in FIG. 1 , the outer surface is curved so that the center in the width direction is the thickest and the thickness gradually decreases toward the two ends in the width direction. Similarly, the outer surface of the connecting piece 23 is also curved in 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 for the user to be irritated when the insertion part 20 is inserted into the vagina VG. The width of the first sheet 21 and the second sheet 22 is, for example, 15 mm to 30 mm, and the length of the insertion portion 20 including the connecting sheet 23 is 85 mm to 120 mm, but the size is not limited as long as it does not hinder insertion into the vagina VG. In addition, the intersection angle (inner angle) between the first sheet 21 and the second sheet 22 is 15 degrees to 25 degrees, but the intersection angle is not limited as long as it does not hinder insertion into the vagina VG.

[0019] like Figure 3 As shown, the main body 10 (a group of the insertion part 20 and the mounting part 30) is formed by a first resin RS1 that mainly forms the surface of the outer side of the main body 10, and a second resin RS2 that mainly forms the central part and the inner surface of the main body 10. In the present embodiment, the main body 10 is manufactured by insert molding. Since the first resin RS1 is a portion that directly contacts the vagina VG of the user, the first resin RS1 has less surface friction than the second resin RS2 and is made of a soft resin. In this embodiment, the surface of the first resin RS1 is wrinkled. The second resin RS2 functions as a core material of the main body 10 , and is made of a resin having rigidity that can resist 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. In addition, the main body 10 may be made of a single resin having both the properties of the first resin RS1 and the properties of the second resin RS2.

[0020] The mounting portion 30 includes: a first mounting piece 31 continuously arranged from the rear end of the first piece 21 (the end on the opposite side of the connecting piece 23); a second mounting piece 32 continuously arranged from the rear end of the second piece 22 (the end on the opposite side of the connecting piece 23); a first snap-fitting protrusion 33 protruding from the surface of the first mounting piece 31 on the opposite side of the surface on the insertion portion 20 side; and a second snap-fitting protrusion 34 protruding from the surface of the second mounting piece 32 on the opposite side of the surface on the insertion portion 20 side. The first mounting piece 31 extends outwardly from the rear end of the first piece 21, and the second mounting piece 32 extends in the V-shaped expansion direction from the rear end of the second piece 22. In this embodiment, the length of the first mounting piece 31 is longer than the length of the second mounting piece 32. The end of the first mounting piece 31 extending outwardly from the first engaging protrusion 33 is a gripping portion 35 that can be gripped by the user's fingers. The first engaging protrusion 33 is a spherical protrusion, and is formed integrally with the first mounting piece 31. The second engaging protrusion 34 is also a spherical protrusion, and is formed integrally with the second mounting piece 32.

[0021] Next, the display unit 40 will be described. Figure 2 and Figure 3 As shown, the display unit 40 includes a cylinder portion 41 , a shaft portion 42 , and an indicator body 43 . The barrel 41 has a cylindrical shape with one end in the longitudinal direction closed and the other end 41a open. The end surface of one end side of the barrel 41 is hemispherical, and a spherical first engaging groove 41b is provided on the outer peripheral surface of the one end side portion. The first engaging protrusion 33 of the first mounting piece 31 can be freely assembled and detached in the first engaging groove 41b. In addition, a coil spring 50 (resistance generating portion) is arranged in the inner cavity 41c of the barrel 41.

[0022] The shaft portion 42 includes a cylindrical shaft body 42a and a shaft base 42b integrally provided with the shaft body 42a at the other end of the shaft body 42a. The diameter of the shaft body 42a is made to be a diameter that can be inserted into the inner cavity 41c of the cylinder 41. For example, the diameter of the shaft body 42a is the same as the inner diameter of the cylinder 41 (the diameter of the inner cavity 41c) or is smaller than the inner diameter of the cylinder 41 by the amount of clearance. The shaft base 42b has a diameter that is one circle larger than the diameter of the shaft body 42a, and the end surface on the opposite side of the shaft body 42a is hemispherical. A spherical second engaging groove 42c is provided on the outer peripheral surface of the shaft base 42b. The second engaging protrusion 34 of the second mounting piece 32 can be freely assembled and detached in the second engaging groove 42c.

[0023] like Figure 3As shown, when the display unit 40 is mounted on the mounting unit 30 , one end of the shaft body 42 a is inserted into the inner cavity 41 c of the cylinder 41 , and the end surface 42 d of the shaft body 42 a contacts the end surface 50 a of the coil spring 50 . Therefore, when the external force F acts on the insertion portion 20 and the connecting piece 23 is deformed to narrow the interval between the first piece 21 and the second piece 22, the shaft body 42a enters the inner cavity 41c of the barrel 41 and compresses the coil spring 50. When the external force F is greater than the combined force of the coil spring 50 and the connecting piece 23, the shaft body 42a enters the inner cavity 41c of the barrel 41 in the depth direction. In addition, when the combined force of the coil spring 50 and the connecting piece 23 and the external force F are balanced with each other, the shaft body 42a stops entering the inner cavity 41c.

[0024] The indicator body 43 has a circular ring shape, and the shaft body 42 a is inserted into an inner cavity 41 c of the indicator body 43 . The inner diameter of the indicator body 43 is the same as or larger than the outer diameter of the shaft body 42a by a clearance, and smaller than the outer diameter of the cylinder 41 or the shaft base 42b. Therefore, the indicator body 43 is relatively free to move on the shaft body 42a in the longitudinal direction. The indicator body 43 and the shaft body 42a are configured such that when the muscle strength display device 1 is tilted, friction is generated to such an extent that the indicator body 43 does not move due to its own weight. For example, the indicator body 43 and the shaft body 42a are made of a resin material that can obtain the necessary frictional force, or the surface roughness of the inner peripheral surface of the indicator body 43 and the outer peripheral surface of the shaft body 42a is made to be rough enough to obtain the necessary frictional force.

[0025] Therefore, when the gap between the first sheet 21 and the second sheet 22 is narrowed while the indicator body 43 is in contact with the cylinder 41, the shaft body 42a enters the inner cavity 41c of the cylinder 41, and the indicator body 43 moves relatively toward the shaft base 42b on the shaft body 42a. Then, when the gap between the first sheet 21 and the second sheet 22 is widened, the shaft body 42a moves in a direction away from the cylinder 41, but the indicator body 43 moves in a direction away from the cylinder 41 together with the shaft body 42a. In this way, the position of the indicator 43 on the shaft body 42a is determined based on the interval between the first piece 21 and the second piece 22 when the first piece 21 and the second piece 22 are close to each other (when the pelvic floor muscle MS is contracted). Since the interval between the first sheet 21 and the second sheet 22 changes according to the muscle strength of the pelvic floor muscles MS when the first sheet 21 and the second sheet 22 approach each other, the position of the indicator 43 on the shaft body 42 a indicates the muscle strength of the pelvic floor muscles MS.

[0026] In this embodiment, the display unit 40 is configured to be freely attachable and detachable to the main body 10 (a group of the insertion unit 20 and the mounting unit 30). Therefore, before and after use of the muscle strength display device 1, the display unit 40 can be removed from the main body 10, and the main body 10 can be cleaned (for example, washed with water) alone. This prevents water from entering the interior of the display unit 40, which may cause the coil spring 50 to rust.

[0027] Figure 4 It is an explanatory diagram of the replacement operation of the first display unit 40X and the second display unit 40Y. Figure 4 The first display unit 40X and the second display unit 40Y are shown in the figure. The first display unit 40X accommodates a first coil spring 50X (first resistance generating unit) that generates a standard resistance when compressed, and the second display unit 40Y accommodates a second coil spring 50Y (second resistance generating unit) that generates a resistance different from that of the first coil spring 50X when compressed. The first display unit 40X and the second display unit 40Y have the same structure except for the coil springs 50X and 50Y, that is, the structure of the cylinder 41, the shaft 42 and the indicator 43. Therefore, the first display unit 40X and the second display unit 40Y are interchangeably mounted on the main body 10 (mounting unit 30).

[0028] The muscle strength display device 1 in which the second display unit 40Y is attached to the main body 10 is compared with the muscle strength display device 1 in which the first display unit 40X is attached to the main body 10 , and the external force F required to reduce the interval between the first sheet 21 and the second sheet 22 is different. For example, if the second coil spring 50Y having a greater resistance during compression than the first coil spring 50X is used, the external force F (muscle strength of the pelvic floor muscle MS) required to reduce the interval between the first sheet 21 and the second sheet 22 will also increase. Therefore, by selectively installing the first display unit 40X and the second display unit 40Y on the main body 10, the measurement range of the muscle strength can be expanded. If the second display unit 40Y is installed on the main body 10 for use, it is expected that the effect of enhancing the muscle strength of the pelvic floor muscle MS is compared with the case where the first display unit 40X is installed on the main body 10 for use. in addition, Figure 4 Although two types of display units 40X and 40Y are exemplified in the figure, the present invention is not limited to this structure. For example, three or more types of display units 40 having coil springs 50 having different resistances when compressed may be used.

[0029] <How to use the muscle strength display device 1> Next, a method of using the muscle strength display device 1 will be described. Figure 5 1 is a diagram showing a state before the muscle strength display device 1 is inserted into the vagina VG. Figure 61 is a diagram showing a state in which the muscle strength display device 1 is inserted into the vagina VG. Figure 8 This is a diagram showing a state where the muscle strength display device 1 is pulled out of the vagina VG. like Fig. 9 As shown in FIG. 1 , before using the muscle strength display device 1, the indicator body 43 moves along the shaft body 42a until it abuts against the other end 41a of the cylinder 41. After the positioning of the indicator body 43 is completed, the insertion part 20 is inserted into the vagina VG. At this time, as shown in FIG. Figure 5 As shown, the connecting piece 23 (returned part) of the insertion part 20 is placed in front of the vaginal opening (vaginal vestibule) VO, and the insertion part 20 is slowly inserted into the vagina VG. In the muscle strength display device 1 of the first embodiment, the outer surface of the connecting piece 23 is curved into an arc shape, and the outer surfaces of the first piece 21 and the second piece 22 are also curved, so that during the insertion of the insertion part 20 into the vagina VG, the stimulation to the user can be reduced.

[0030] like Figure 6 As shown in FIG. 1 , the insertion portion 20 is inserted into the vagina VG until the mounting portion 30 (the first mounting piece 31 and the second mounting piece 32) contacts the vaginal opening VO. In this inserted state, the connector 23 is estimated to be located at a position closer to the deep side of the vagina VG than the pelvic floor muscle MS. Then, as shown in FIG. Figure 7 As shown, the pelvic floor muscle MS contracts. As the pelvic floor muscle MS contracts, an external force F acts, as shown in FIG. Fig. 9 As shown in (b), the interval between the first sheet 21 and the second sheet 22 is reduced. When the interval between the first sheet 21 and the second sheet 22 is reduced, the shaft body 42a enters the inner cavity 41c of the cylinder 41 in the display unit 40, and the position of the indicator body 43 on the shaft body 42a moves. That is, the position of the indicator body 43 in the longitudinal direction on the shaft body 42a is determined according to the insertion depth of the shaft body 42a into the inner cavity 41c, and the position is closer to the shaft base 42b as the insertion depth increases.

[0031] After the user fully contracts the pelvic floor muscles MS, relax the pelvic floor muscles MS, such as Figure 8 As shown, the insertion part 20 is pulled out from the vagina VG. Fig. 9 As shown in (c), the muscle strength display device 1 pulled out of the vagina VG is not acted upon by the external force F, so the interval between the first piece 21 and the second piece 22 is expanded due to the elastic force of the connecting piece 23 and the restoring force of the coil spring 50. As the interval between the first piece 21 and the second piece 22 increases and the shaft main body 42 a moves in a direction away from the tube portion 41 , the indicator body 43 maintains its position during contraction due to friction with the shaft portion 42 and moves together with the shaft portion 42 . That is, even if the interval between the first sheet 21 and the second sheet 22 is enlarged, the position of the indicator body 43 on the shaft body 42a will not change. Therefore, when the interval between the first sheet 21 and the second sheet 22 is enlarged, the position of the indicator body 43 on the shaft body 42a indicates the value of the external force F applied to the insertion portion 20 due to the contraction of the pelvic floor muscles MS, that is, the muscle strength of the pelvic floor muscles MS. Therefore, the user can know the muscle strength of the pelvic floor muscle MS based on the position of the indicator body 43 on the shaft portion 42 .

[0032] <Other Embodiments of the Muscle Strength Display Device 1> The muscle strength display device 1 of the present invention is not limited to the muscle strength display device 1 of the first embodiment described above. The muscle strength display devices 1', 1A, 1B, 1C, 1D of other embodiments are introduced below. As long as there is no obstacle, the structure of the muscle strength display device 1, 1', 1A, 1B, 1C, 1D of one embodiment can be applied to the muscle strength display device 1, 1', 1A, 1B, 1C, 1D of another embodiment. Fig.10 (a) is a perspective view of a muscle strength display device 1' according to a modified example of the first embodiment. Fig.10 (b) is a cross-sectional view of the muscle strength display device 1', Fig.11 (a) is a perspective view of a muscle strength display device 1A according to the second embodiment. Fig.11 (b) is an enlarged view of a display unit provided in the muscle strength display device 1A. Fig.12 is a perspective view of a muscle strength display device 1B according to a modified example of the second embodiment. Fig.13 (a) is a perspective view of one side of a 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. Fig.14 It is a perspective view of a muscle strength display device 1D according to a modified example of the third embodiment.

[0033] <Muscle Strength Display Device 1′ According to Modification of First Embodiment> Fig.10 The muscle strength display device 1' of the modified example of the first embodiment shown in the figure similarly includes: a main body 10' (insertion part 20', mounting part 30'); a display part 40' which can be freely loaded and unloaded on the insertion part 20'; and a coil spring 50' arranged in the inner cavity 41c' of the cylinder 41' possessed by the display part 40'. In the modified example of muscle strength display device 1', in particular, the first sheet 21' and the second sheet 22' are arranged in parallel with each other, and the curvature of the connecting sheet 23' is larger than that of the connecting sheet 23 of the first embodiment, which is different from the muscle strength display device 1 of the first embodiment. In addition, the shaft body 42a' of the shaft portion 42' is thinner than the shaft body 42a of the first embodiment, and the indicator body 43' is composed of a C-shaped plate, which is also different from the muscle strength display device 1 of the first embodiment. In the muscle strength display device 1' having the above structure, since the first sheet 21' and the second sheet 22' are arranged parallel to each other, it is difficult for the insertion portion 20' to be pulled out of the vagina VG even when an external force F is applied, and since the curvature of the connecting sheet 23' is large, it is easy to clean the inner circumferential surface of the connecting sheet 23'.

[0034] <Muscle Strength Display Device 1A of Second Embodiment> Fig.11 The muscle strength display device 1A of the second embodiment shown in the figure has Fig.10 The muscle strength display device 1 ′ of the present invention has a main body portion 10A configured in the same manner as the main body portion 10A, but is different from the muscle strength display device 1 of the first embodiment in that a display portion 40A has a ratchet structure. In the muscle strength display device 1A of the second embodiment, the connection piece 23A of the insertion part 20A corresponds to the resistance generating part, and generates resistance against the external force F. The display part 40A includes a claw part 41A protruding from the inner surface of the first piece 21A toward the second piece 22A, and a groove part 42A (serration) protruding from the inner surface of the second piece 22A toward the first piece 21A.

[0035] The claw 41A includes a prism-shaped claw body 411A and a substantially triangular prism-shaped claw 412A protruding downward from the front end of the claw body 411A. The claw 41A is made of resin and is integrally molded with the first sheet 21A in this embodiment. The groove portion 42A has a prism-shaped groove portion body 421A and a plurality of sawtooth-shaped grooves 422A formed on the upper surface of the groove portion body 421A. Each groove 422A is shaped to be engaged with the claw 412A, and is formed by an inclined surface 423A (first surface) that allows the claw 412A to move toward the second piece 22A side and a drooping surface 424A (second surface) that prevents the claw 412A from moving to the opposite side (the first piece 21A side). The groove portion 42A is made of resin and, in this embodiment, is integrally molded with the second piece 22A.

[0036] In the muscle strength display device 1A of the second embodiment, when the user contracts the pelvic floor muscles MS with the entire insertion portion 20A inserted into the vagina VG, an external force F acts on the first sheet 21A and the second sheet 22A in a direction of reducing the distance between them, and the connecting sheet 23A (resistance generating portion) generates resistance. When the external force F is greater than the resistance, the gap between the first sheet 21A and the second sheet 22A is reduced, and the claw 41A moves toward the second sheet 22A on the groove 42A. At this time, the claw 412A of the claw 41A moves simultaneously across the grooves 422A provided on the upper surface of the groove body 421A.

[0037] When the user relaxes the pelvic floor muscle MS and pulls the insertion part 20A out of the vagina VG, although the restoring force of the connecting piece 23A acts on the first piece 21A and the second piece 22A, the claw 412A is hooked on the groove 422A, so the interval between the first piece 21A and the second piece 22A remains reduced. Therefore, the position of the claw 412A (the claw 412A hooked in the groove 422A) indicates the value of the external force F (the muscle strength of the pelvic floor muscles MS) applied to the insertion portion 20A due to the contraction of the pelvic floor muscles MS. Thus, the user can know the muscle strength of the pelvic floor muscles MS based on the position of the claw 412A.

[0038] <Muscle Strength Display Device 1B According to Modification of Second Embodiment> Fig.12 The muscle strength display device 1B according to the modified example of the second embodiment shown is different from the above-mentioned muscle strength display devices 1 , 1 ′, and 1A in the configurations of, in particular, an insertion portion 20B and a display portion 40B. For example, the difference of the insertion part 20B is that the first piece 21B and the second piece 22B are connected by a hinge mechanism 23B, and can be freely opened and closed with the hinge mechanism 23B as the center. In addition, the difference of the display part 40B is that it has a shaft part 41B and a hole part 42B, and the shaft part 41B is alternately provided with a plurality of large diameter parts 411B and a plurality of small diameter parts 412B along the axial direction, and the hole part 42B is provided with an insertion hole 421B for the shaft part 41B to be inserted and elastically deformed.

[0039] In the muscle strength display device 1B of the modified example of the second embodiment, the display unit 40B also functions as a resistance generating unit. For example, due to the contraction of the pelvic floor muscle MS, an external force F in a direction in which the interval between the first sheet 21B and the second sheet 22B is reduced acts, and the large diameter portion 411B and the insertion hole 421B abut against each other and generate resistance. In addition, when the external force F exceeds the resistance and the insertion hole 421B passes through the large diameter portion 411B, the insertion hole 421B moves to the adjacent small diameter portion 412B and abuts against the large diameter portion 411B of the next stage. Thereafter, the insertion hole 421B passes through the large diameter portion 411B in sequence until the external force F and the resistance are balanced.

[0040] Even if the user relaxes the pelvic floor muscle MS, the positional relationship between the insertion hole 421B and the shaft portion 41B is maintained in a state where the interval between the first sheet 21B and the second sheet 22B is reduced. Therefore, the position of the hole portion 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) applied to the insertion portion 20B due to the contraction of the pelvic floor muscle MS. Thus, the user can know the muscle strength of the pelvic floor muscle MS based on the position of the hole portion 42B in the longitudinal direction on the shaft portion 41B. In the muscle strength display device 1B, the position of the insertion hole 421B on the shaft portion 41B is adjusted before insertion into the vagina VG, thereby enabling the interval between each of the first sheet 21B and the second sheet 22B to be set to an interval suitable for the user.

[0041] <Muscle Strength Display Device 1C of the Third Embodiment> Fig.13 The muscle strength display device 1C of the third embodiment shown is different from the above-mentioned muscle strength display devices 1, 1', 1A, and 1B in that it has a pointer-type display unit 40C. In the muscle strength display device 1C of the third embodiment, for the insertion portion 20C, the first piece 21C and the second piece 22C are connected by a hinge mechanism 23C so as to be freely openable and closable, and a coil spring 50C as a resistance generating member is installed between the first piece 21C and the second piece 22C. The coil spring 50C is installed in a manner that the distance from the front end portion (the portion on the hinge mechanism 23C side) of the insertion portion 20C can be changed in multiple stages. With this structure, in the muscle strength display device 1C, the magnitude of the resistance can be changed according to the installation position of the coil spring 50C (the distance from the front end portion of the insertion portion 20C). The first handle 31C is provided on the rear end side of the first sheet 21C so as to extend laterally, and the second handle 32C is provided on the rear end side of the second sheet 22C so as to extend laterally. The first handle 31C and the second handle 32C are portions that the user holds, and when the insertion portion 20C is inserted into the vagina VG, the first handle 31C and the second handle 32C are located outside the vagina VG.

[0042] The display portion 40C includes: a rack 41C arranged at the rear end portion of the first piece 21C (the end portion on the opposite side to the insertion end); a pinion 42C arranged at the rear end portion of the second piece 22C (the end portion on the opposite side to the insertion end); a driving needle 43C that is driven to rotate in both the forward direction and the reverse direction by the pinion 42C; a driven needle 44C that rotates forward with the aid of the driving needle 43C when the driving needle 43C rotates forward, and does not transmit the rotation when the driving needle 43C rotates reversely; a guide groove portion 451C that guides the driving needle 43C and the driven needle 44C; and a fan-shaped panel 45C formed with a scale 452C. The guide groove portion 451C provided on the panel 45C is formed in an arc shape along the outer edge and is engaged with the front end portion of the driving needle 43C and the front end portion of the driven needle 44C. In the present embodiment, a handle 46C for the user's fingers to hold is provided at the front end portion of the driving needle 43C. In addition, a sawtooth-shaped concave-convex is formed on the inner peripheral edge of the guide groove portion 451C. The sawtooth-shaped concave-convex is provided to facilitate the movement of the driving needle 43C and the driven needle 44C in the positive direction, while the movement of the driving needle 43C and the driven needle 44C in the reverse direction requires manual operation.

[0043] In the muscle strength display device 1C of the third embodiment, when an external force F acts in a direction that reduces the gap between the first sheet 21C and the second sheet 22C by contraction of the pelvic floor muscle MS, the coil spring 50C generates resistance. When the external force F is greater than the resistance, the gap between the first sheet 21C and the second sheet 22C is reduced, and the pinion 42C rotates in the positive direction by the movement of the rack 41C. As the pinion 42C rotates, the driving needle 43C and the driven needle 44C rotate in the positive direction. Moreover, when the external force F and the resistance are balanced, the driving needle 43C and the driven needle 44C stop rotating in the positive direction. When the user relaxes the pelvic floor muscle MS, the interval between the first piece 21C and the second piece 22C is expanded by the restoring force of the coil spring 50, and the pinion 42C rotates in the reverse direction by the movement of the rack 41C. As the pinion 42C rotates, the driving needle 43C rotates in the reverse direction, but the driven needle 44C is engaged with the guide groove 451C and does not rotate. Therefore, the angle of the movable needle 44C indicates the value of the external force F (muscle strength of the pelvic floor muscles MS) applied to the insertion portion 20B due to the contraction of the pelvic floor muscles MS. Thus, the user can know the muscle strength of the pelvic floor muscle MS based on the angle of the driven needle 44C.

[0044] <Muscle Strength Display Device 1D According to Modification of Third Embodiment> Fig.14 The muscle strength display device 1D of the modified example shown has a pointer-type display unit 40D and a coil spring 50D as a resistance generating member between the first piece 21D and the second piece 22D of the insertion part 20D. Fig.13 The muscle strength display device 1C is the same. In the muscle strength display device 1D of the modified example, the rack 41D is provided from the rear end of the first sheet 21D toward the side, a guide shaft 46D in the shape of a prism is provided integrally with the rack 41D and along the length direction of the rack 41D, and a plurality of engaging grooves 461D are provided at a predetermined interval on the side surface of the guide shaft 46D. In the present embodiment, the engaging grooves 461D are shallow curved concave surfaces. On the other hand, at the rear end of the second piece 22D, there are provided a square cylindrical guide cylinder portion 47D for the guide shaft 46D to be inserted, a pinion 42D that rotates with the movement of the rack 41D, a pointer 43D that is driven by the pinion 42D, and a fan-shaped panel 45D that forms a scale 452D. In addition, the guide cylinder 47D is provided with an engagement protrusion 471D that freely engages with the engagement groove 461D. In the present embodiment, the engagement protrusion 471D is hemispherical. Therefore, as the guide shaft 46D moves in the longitudinal direction, the engagement protrusion 471D repeatedly engages with and disengages from the engagement groove 461D.

[0045] In the muscle strength display device 1D of the modified example, when the external force F acts in a direction that reduces the distance between the first sheet 21D and the second sheet 22D due to the contraction of the pelvic floor muscle MS, the coil spring 50D generates resistance. In addition, the engagement projection 471D is fitted into the engagement groove 461D to generate resistance. When the external force F is greater than the resistance, the interval between the first piece 21C and the second piece 22C is reduced, the rack 41D moves, and the engaging protrusion 471D leaves the engaging groove 461D and fits into the adjacent engaging protrusion 471D. Through the movement of the rack 41D, the pinion 42D rotates in the positive direction, and the pointer 43D also rotates in the positive direction. Moreover, when the external force F and the resistance are balanced, the pointer 43D stops rotating in the positive direction.

[0046] When the user relaxes the pelvic floor muscle MS, although the restoring force of the coil spring 50D acts on the first piece 21D and the second piece 22D, the interval between the first piece 21D and the second piece 22D remains reduced because the engaging protrusion 471D is engaged with the engaging groove 461D. Therefore, the angle of the pointer 43D indicates the value of the external force F (muscle strength of the pelvic floor muscles MS) applied to the insertion portion 20B due to the contraction of the pelvic floor muscles MS. Thus, the user can know the muscle strength of the pelvic floor muscle MS based on the angle of the pointer 43D.

[0047] [Summarization of the embodiments, functions and effects of the present invention] <First Embodiment> The muscle strength display device 1, 1', 1A, 1B, 1C, 1D of the present embodiment is characterized by comprising: an insertion portion 20, 20', 20A, 20B, 20C, 20D which can be freely inserted into the vagina VG and is subjected to an external force F as the pelvic floor muscle MS contracts; a resistance generating portion (coil springs 50, 50', 50C, 50D, 50X, 50Y, connecting pieces 23, 23', 23A, 40A, 40B) which generates resistance to the external force F; a display portion 40, 40', 40A, 40B, 40C, 40D which displays the value of the external force F as the muscle strength of the pelvic floor muscle MS; The inserting portion comprises: a first sheet (21, 21', 21A, 21B, 21C, 21D); a second sheet (22, 22', 22A, 22B, 22C, 22D) which is opposed to the first sheet at a distance and connected to the first sheet at a freely changeable distance; When an external force (external force F) in a direction of reducing the interval acts on the first sheet 21 and the second sheet 22, the resistance generating portion generates resistance; The display unit has a configuration that displays the value of the external force F according to the interval when the pelvic floor muscle MS contracts, and can display the value of the external force F even after the insertion portion 20C is pulled out of the vagina VG. According to the muscle strength display device of this embodiment, the muscle strength of the pelvic floor muscle MS can be known by the value of the external force F displayed on the display part (the position of the indicator body 43, 43' on the shaft part 42, 42', the position of the claw 412A hooked on the groove 422A, the length direction position of the hole part 42B on the shaft part 41B, the angle of the driven needle 44C and the pointer 43D). In addition, since no electronic components are provided in the insertion part, it is not easy to cause anxiety to the user, and no tube, pressure gauge, etc. are required. Therefore, the usability of the muscle strength display device can be improved.

[0048] <Second Embodiment> The muscle strength display device 1 of this embodiment is characterized by comprising: a first mounting piece 31 provided on the first piece 21 and located outside the vagina VG when the insertion portion 20 is inserted into the vagina VG; a second mounting piece 32 provided on the second piece 22 and located outside the vagina VG when the insertion portion 20 is inserted into the vagina VG; The display portion 40 comprises: a barrel portion 41 mounted on one of the first mounting piece 31 and the second mounting piece 32; a rod-shaped shaft portion 42 mounted on the other of the first mounting piece 31 and the second mounting piece 32; an indicator body 43 mounted on the shaft portion 42 so as to be relatively freely movable along the length direction of the shaft portion 42; the shaft portion 42 is inserted into the inner cavity 41c of the barrel portion 41, and the insertion depth of the shaft portion 42 into the inner cavity 41c increases as the interval between the first mounting piece 31 and the second mounting piece 32 becomes narrower; the indicator body 43 abuts against the end portion 41a of the barrel portion 41 as the shaft portion 42 enters the inner cavity 41c, and the position of the indicator body 43 in the length direction of the shaft portion 42 is determined according to the insertion depth of the shaft portion 42. According to the muscle strength display device 1 of this embodiment, the display unit 40 is composed of a cylinder 41, a shaft 42, and an indicator body 43, and the position of the indicator body 43 on the shaft 42 is determined according to the insertion depth of the shaft 42, thereby simplifying the structure of the display unit 40.

[0049] <Third Embodiment> In the muscle strength display device 1 of the present embodiment, it is characterized in that the indicator body 43 is annular in shape for the shaft portion 42 to be inserted, and through the friction between the inner peripheral surface of the indicator body 43 and the outer peripheral surface of the shaft portion 42, the position of the indicator body 43 in the length direction of the shaft portion 42 is also maintained after the insertion portion 20C is pulled out of the vagina VG. According to the muscle strength display device 1 of the present embodiment, the position of the indicator 43 is maintained by friction, so that the structure of the display unit 40 can be simplified.

[0050] <Fourth Embodiment> The muscle strength display device 1 of the present embodiment is characterized in that the resistance generating portion is a coil spring 50 provided in the inner cavity 41 c of the cylinder 41 and compressed by the shaft 42 entering the inner cavity 41 c. According to the muscle strength display device 1 of the present embodiment, the resistance generating unit is formed of the coil spring 50 , and the coil spring 50 is provided in the inner cavity 41 c of the cylinder 41 , thereby achieving a compact structure.

[0051] <Fifth Embodiment> The muscle strength display device 1 of the present embodiment is characterized in that the display unit 40 is detachably mounted on the first mounting piece 31 and the second mounting piece 32 . According to the muscle strength display device 1 of this embodiment, when cleaning the main body 10 (the mounting pieces 31 and 32 and the insertion part 20), the display part 40 can be separated from the main body 10. Therefore, the main body 10 can be easily cleaned.

[0052] <Sixth Implementation Method> In the muscle strength display device 1 of this embodiment, it is characterized in that the display unit 40 includes: a first display unit 40X in which a first coil spring 50X is set in an inner cavity 41c; a second display unit 40Y in which a second coil spring 50Y having a resistance different from that of the first coil spring 50X during compression is set in the inner cavity 41c; and the first display unit 40X and the second display unit 40Y are freely interchangeably mounted on the first mounting piece 31 and the second mounting piece 32. According to the muscle strength display device 1 of this embodiment, by selectively installing the first display unit 40X and the second display unit 40Y, the external force F required to reduce the interval between the first piece 21 and the second piece 22 can be changed. In other words, the load applied to the pelvic floor muscle MS can be changed. Description of Reference Numerals

[0053] 1: Muscle strength display device, 10: Main body (insertion part, mounting part), 20: Insertion part, 21: First piece, 22: Second piece, 23: Connecting piece, 30: Mounting part, 31: First mounting piece, 32: Second mounting piece, 33: First engaging protrusion, 34: Second engaging protrusion, 35: Holding part, 40: Display part, 40X: First display part, 40Y: Second display part, 41: Cylinder, 41a: The other end of the cylinder, 41b: First engaging groove, 41c: Inner cavity of the cylinder, 42: Shaft, 42a: Shaft body, 42b: Shaft base, 42c: Second engaging groove, 42d: End face of the shaft body, 43: Indicator, 50: Coil spring, 50X : first coil spring, 50Y: second coil spring, 50a: end face of coil spring, 1': muscle strength display device of modified example of first embodiment, 10': main body, 20': insertion part, 21': first piece, 22': second piece, 23': connecting piece, 30': mounting part, 40': display part, 41': cylinder, 42': shaft, 42a': shaft body, 43': indicator body, 41c': inner cavity of cylinder, 50': coil spring, 1A: muscle strength display device of second embodiment, 10A: main body, 20A: insertion part, 21A: first piece, 22A: second piece, 23A: connecting piece, 40A: display part, 41A: claw, 411A: claw body, 412A: claw, 42A: groove, 421A: groove body, 422A: groove, 423A: inclined surface, 424A: hanging surface, 1B: muscle strength display device of a modified example of the second embodiment, 20B: insertion portion, 21B: first piece, 22B: second piece, 23B: hinge mechanism, 40B: display portion, 41B: shaft portion, 411B: large diameter portion, 412B: small diameter portion, 42B: hole portion, 421B: insertion hole, 1C: muscle strength display device of the third embodiment, 20C: insertion portion, 21C: first piece, 22C: second piece, 23C: hinge mechanism, 31C: first handle, 40C: display portion, 41C: teeth bar, 42C: pinion, 43C: driving needle, 44C: driven needle, 45C: panel, 451C: guide groove portion, 452C: scale, 46C: handle, 50C: coil spring, 1D: muscle strength display device of a modified example of the third embodiment, 20D: insertion portion, 21D: first sheet, 22D: second sheet, 40D: display portion, 41D: rack, 42D: pinion, 43D: pointer, 45D: panel, 452D: scale, 47D: guide cylinder portion, 471D: engaging protrusion, 50D: coil spring, VG: vagina, VO: vaginal opening (vaginal vestibule), MS: pelvic floor muscle, RS1: first resin, RS2: second resin, F: external force.

Claims

1. A muscle strength display device, characterized in that: include: The insertion part is detachably inserted into the vagina and receives external force as the pelvic floor muscles contract; a resistance generating unit, generating a resistance against the external force; a display unit, which displays the value of the external force as the muscle strength of the pelvic floor muscle; The insertion portion includes a first sheet and a second sheet, the second sheet being opposed to the first sheet with a gap therebetween and being coupled to the first sheet with the gap freely changeable; The resistance generating portion generates the resistance when the external force in the direction of reducing the interval acts on the first sheet and the second sheet; The display unit is configured to display the value of the external force according to the interval when the pelvic floor muscle contracts, and to be able to display the value of the external force even after the insertion unit is pulled out of the vagina.

2. The muscle strength display device according to claim 1, characterized in that: have: a first mounting piece, which is provided on the first piece and is located outside the vagina when the insertion portion is inserted into the vagina; a second mounting piece, which is provided on the second piece and is located outside the vagina when the insertion portion is inserted into the vagina; The display unit comprises: A barrel portion, mounted on one of the first mounting piece and the second mounting piece; A rod-shaped shaft portion mounted on the other of the first mounting piece and the second mounting piece; An indicator body is mounted on the shaft portion so as to be relatively free to move along the length direction of the shaft portion; The shaft portion is inserted into the inner cavity of the cylinder portion, and as the interval becomes narrower, the insertion depth of the shaft portion into the inner cavity becomes greater; The indicator body abuts against the end of the cylinder portion as the shaft portion enters the inner cavity; The position of the indicator in the longitudinal direction of the shaft portion is determined according to the insertion depth of the shaft portion.

3. The muscle strength display device according to claim 2, characterized in that: The indicator body is in an annular shape for the shaft portion to pass through; The position of the indicator body is maintained even after the insertion portion is pulled out of the vagina, due to the friction between the inner peripheral surface of the indicator body and the outer peripheral surface of the shaft portion.

4. The muscle strength display device according to claim 2 or 3, characterized in that: The resistance generating portion is a spring provided in the inner cavity and compressed by the shaft portion entering the inner cavity.

5. The muscle strength display device according to claim 2 or 3, characterized in that: The display unit is detachably mounted on the first mounting piece and the second mounting piece.

6. The muscle strength display device according to claim 4, characterized in that: The display unit comprises: A first display portion, wherein a first spring is disposed in the inner cavity; and The second display part has a second spring disposed in the inner cavity, and the resistance of the second spring when compressed is different from the resistance of the first spring when compressed. The first display unit and the second display unit are interchangeably mounted on the first mounting piece and the second mounting piece.

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