JP6560113B2 - How to evaluate the difficulty of wearing pants-type disposable diapers - Google Patents

Description

  The present invention relates to a method for evaluating the difficulty of wearing a pants-type disposable diaper. The evaluation method of the present invention is useful for developing easy-to-wear pants-type disposable diapers.

  The center-of-gravity shaker is a measuring device that displays the movement of the center of gravity while the subject is moving as a trajectory. The center-of-gravity sway meter is mainly used for objective evaluation and lesion diagnosis of vertigo and balance disorder in otolaryngology. As another application example of the center of gravity shake meter, Patent Document 1 describes the center of gravity swing area, the total trajectory length, the effective value area, the center of gravity movement speed, and the center of gravity, which are indexes related to the balance function obtained from the center of gravity shake measurement meter. A method is described in which the physical condition is evaluated using two or more of a plurality of indices such as the frequency characteristics of the fluctuation locus.

  Patent Document 2 also describes an application example of the sway meter. This document describes a method of measuring the wearer's center of gravity swing during a pull-up operation of a pant-type diaper using a center-of-gravity sway meter and evaluating the ease of putting on the diaper based on the degree. According to this document, this method is capable of objectively evaluating the ease of wearing a pant-type diaper.

JP 2004-180792 A JP 2008-200277 A

  The evaluation method described in Patent Document 2 helps to develop a pants-type disposable diaper that is easy to wear. However, the ease of wearing a pants-type disposable diaper is not only determined by the operability during the lifting operation of the diaper, but it is realistic to evaluate the operability in a series of operations. . However, in the case of an elderly person who is the main wearer of a pants-type disposable diaper, it was not easy to evaluate the difficulty of wearing the diaper as a series of movements and to evaluate the ease of wearing in the series of movements. .

  Accordingly, an object of the present invention is to improve the evaluation method of the difficulty of wearing a pants-type disposable diaper, and more specifically, an evaluation method of ease of wearing that is more realistic than the conventional evaluation method. It is to provide.

The present invention relates to a center of gravity shake meter of a wearer when the wearer is in a sitting posture and the leg is passed through the leg opening of the pants-type disposable diaper while sitting from the posture. It is a method for evaluating the difficulty of wearing a pants-type disposable diaper based on the measured degree of center of gravity fluctuation,
The sensor is divided into a first sensor and a second sensor, the first sensor is installed under the wearer's buttocks in a sitting posture, the second sensor is installed under the sole, and measurement results obtained by each sensor Thus, a continuous center of gravity sway during the operation is obtained, and a method for evaluating the difficulty of wearing a pants-type disposable diaper based on the degree of the continuous sway of the center of gravity is provided.

  ADVANTAGE OF THE INVENTION According to this invention, the evaluation method of the difficulty of the ease of putting on of the underpants type disposable diaper according to the actual condition is provided rather than the conventional evaluation method.

FIG. 1 is a perspective view showing a part of a center-of-gravity fluctuation measuring device used in the evaluation method of the present invention. FIG. 2 is a perspective view showing a state in which a subject is placed on the measuring apparatus shown in FIG. FIG. 3A to FIG. 3I are schematic views sequentially showing the operation of the subject wearing and removing the pants-type disposable diaper. FIG. 4 is a diagram illustrating an example of the result of the center of gravity fluctuation measurement. FIG. 5 is an explanatory diagram showing a part of a procedure for calculating various parameters from the measurement result of the center of gravity fluctuation. FIG. 6 is a diagram illustrating another example of the result of the gravity center fluctuation measurement. FIG. 7 is a graph showing the results of sensory evaluation performed in the examples. FIG. 8 is a graph showing the relationship between the total trajectory length obtained from the measurement result of the center of gravity fluctuation performed in the example and each operation. FIG. 9 is a graph showing the relationship between the outer peripheral area obtained from the measurement result of the center of gravity fluctuation performed in the example and each operation. FIG. 10 is a graph showing the relationship between the length of the front and rear trajectory obtained from the measurement result of the center of gravity fluctuation performed in the example and each operation. FIG. 11 is a graph showing the relationship between the left and right trajectory lengths obtained from the measurement results of the center-of-gravity fluctuation performed in the example and each operation. FIG. 12A is a graph showing the relationship between the trajectory length and sensory evaluation in a series of attachment / detachment operations obtained from the measurement result of the center of gravity oscillation performed in the example, and FIG. It is a graph which shows the relationship between the locus | trajectory length at the time of the obtained leg insertion, and sensory evaluation.

  The present invention will be described below based on preferred embodiments with reference to the drawings. FIG. 1 shows a part of the center-of-gravity fluctuation measuring apparatus used in the evaluation method of the present invention. FIG. 2 is a diagram illustrating a state in which a subject is placed on the measurement apparatus illustrated in FIG. 1. As shown in FIGS. 1 and 2, the measuring apparatus 10 includes a chair 12 having a seating surface 11. A rotation handle 13 is attached to the chair 12, and the seat surface 11 can be raised and lowered by rotating the handle 13. For example, a screw-type jack mechanism can be used to raise and lower the seat surface 11. As described above, the measurement apparatus 10 shown in FIGS. 1 and 2 measures the center of gravity fluctuation when starting the operation from the initial posture, with the posture of the subject 1, that is, the wearer of the diaper 2 sitting as the initial posture. Is.

  In this evaluation method, the subject's center-of-gravity fluctuation is measured using a sensor of the center-of-gravity sway meter. This sensor has a function of detecting a vertical pressure acting on the sensing surface of the sensor and outputting the detected fluctuation of the center of the vertical pressure as an electric signal change. In this evaluation method, the sensor is divided into two sensors, a first sensor and a second sensor. As shown in FIGS. 1 and 2, the first sensor 21 is placed on the seat surface 11 of the chair 12. On the other hand, the second sensor 22 is placed at a position corresponding to the sole of the subject 1 sitting in the apparatus 10. Each sensor 21, 22 is placed so that its sensing surface coincides with the horizontal plane.

  Cables 21 a and 22 a are drawn out from the sensors 21 and 22. Cables 21a and 22a connect the sensors 21 and 22 to a data processing device (not shown), and send an electrical signal corresponding to the position of the center of gravity detected by the sensors 21 and 22 to the data processing device (see FIG. (Not shown). In the data processing device, the signals from the two sensors 21 and 22 in the divided state are combined, and processing is performed as if the signals were obtained from a single sensor. As the data processing device, for example, an electronic calculation processing device such as a personal computer is used. The center-of-gravity fluctuation data obtained by the data processing device is displayed on, for example, terminal display means (not shown) connected to the data processing device, or printing means (not shown) connected to the data processing device. Or stored in a storage device (not shown) built in or connected to the data processing device.

  The underpants type diaper which is the object of the evaluation method of the present invention broadly includes underpants-shaped diapers having a waist opening and a pair of leg openings. The pants mentioned here include various shapes such as briefs, shorts, trunks and the like. A pants-type diaper generally has a waist elastic member arranged in the width direction of the diaper along the waist opening and a leg elastic member arranged along the leg opening. Furthermore, the pants-type diaper may have a waistline elastic member disposed in the width direction of the diaper at the waistline located between the waist opening and the leg opening.

  The pants-type diaper has a top sheet facing the wearer's skin, a back sheet facing the garment, and a liquid-retaining absorbent core interposed between the sheets. The top sheet is composed of a liquid permeable sheet. As such a sheet, for example, a non-woven fabric or a sheet having a large number of apertures formed by perforating a film is used. The back sheet is composed of a liquid-impermeable or water-repellent sheet. As such a sheet, for example, a film, a spunbond-meltblown-spunbond nonwoven fabric or the like is used. This film may have moisture permeability. The absorbent core is made of a water-absorbing fiber material such as pulp or a mixture of the fiber material and a superabsorbent polymer. The pants-type diaper may have a member for improving various performances of the diaper as necessary in addition to the above members. As such a member, for example, a pair of leak-proof cuffs provided on both right and left side portions of the diaper skin facing surface can be cited.

  3 (a) to 3 (i) sequentially show operations of attaching and removing the pants-type disposable diaper 2. Among these figures, FIG. 3A is the same as the state shown in FIG. FIG. 3A shows a state in which the subject 1 is sitting on the chair 12. In the state shown in the figure, the first sensor 21 is installed under the wearer's buttocks in the sitting position, and the second sensor 22 is installed under the soles of both feet. The subject 1 has a pants-type disposable diaper 2 to be worn on his thigh. From this state, the center of gravity is measured.

  FIG. 3B shows an operation in which the subject 1 raises one leg while sitting down from the posture shown in FIG. 3A and passes the leg through one leg opening of the diaper 2. Repeat this for the other leg. In this case, the both sides of the diaper 2 are held to widen the waist opening of the diaper 2. Next, the legs are put in order into the leg openings of the diaper 2 in the spread state. The order of left and right legs is not important. Thereby, the diaper 2 is in a state in which each leg of the subject passes through each leg opening. In this state, subject 1 is rested for 60 seconds while sitting on the chair. Thereafter, the subject 1 is slowly raised from the chair 12 to the posture shown in FIG. In this posture, the diaper 2 is at a position near the knee of the subject 1 or in the vicinity thereof. Further, signals from the first sensor 21 and the second sensor 22 are detected until this posture, and only signals from the second sensor 22 are detected after this posture. The detection of only the signal from the second sensor 22 continues until the operation shown in FIG.

  FIG. 3D shows an operation of pulling up the diaper 2 to the waist position by slightly bending the subject forward from the upright standing posture shown in FIG. In this case, the diaper 2 is pulled up by holding both sides of the diaper 2. When the diaper 2 is completely pulled up and the wearing state is completed, the subject 1 is made to stand upright as shown in FIG. Then, the subject 1 is rested for 20 seconds in this state to adjust the breathing. Thereafter, the subject 1 is caused to perform the operations shown in FIGS. The operations shown in FIGS. 3 (f) to 3 (i) are operations from the wearing state of the diaper 2 until the diaper 2 is completely removed. A series of these operations will be described below.

  First, as shown in FIG. 3 (f), the subject 1 is brought into a slightly forward bent posture shown in FIG. 3 (f) from the upright standing posture shown in FIG. 3 (e). Then, hold the diaper 2 on both sides and pull down the diaper 2. When the diaper 2 is pulled down to the position of the subject's knee or the vicinity thereof, the subject 1 is seated on the chair 12 as shown in FIG. After this posture, signals from the first sensor 21 and the second sensor 22 are detected. Subsequently, as shown in FIG. 3 (h), the leg of the subject is pulled out from the diaper 2 one by one through the leg opening of the diaper 2. The order of the left and right legs does not matter. Finally, as shown in FIG. 3I, the removed diaper 2 is placed on the thigh of the subject while the subject 1 is sitting on the chair 12.

  In the series of operations described above, the posture shown in FIG. 3B is performed from the posture shown in FIG. 3A, and the posture of the subject 1 with each leg passing through each leg opening of the diaper 2 is obtained. The center-of-gravity sway of the subject 1 is measured when performing the motion up to. An example of the measurement result is shown in FIG. In the figure, the position of coordinate 0 on the vertical axis coincides with the midline of subject 1. In the same figure, the locus of center of gravity fluctuation is indicated by L. In the drawing, the right half area A1 toward the paper surface is a measurement result based on a signal from the first sensor 21, and the left half area A2 is a measurement result based on a signal from the second sensor 22. Thus, in this evaluation method, based on the measurement results obtained by the sensors 21 and 22, the operation shown in FIG. 3 (b) is performed from the posture shown in FIG. 3 (a), and each leg opening of the diaper 2 is performed. Thus, continuous swaying of the center of gravity during the movement until the posture of the subject 1 is passed is obtained. That is, the center of gravity of the wearer is calculated when the wearer is in a sitting posture and the leg is passed through the leg opening of the diaper 2 while sitting from the posture. As is apparent from the measurement results shown in FIG. 4, at the start of measurement, the center of gravity of the subject 1 is on the seating surface 11 of the chair 12, which is the region A <b> 1, that is, the region detected by the first sensor 21.

  In the measurement of the center of gravity, the operation shown in FIG. 3 (b) is performed from the posture shown in FIG. 3 (a) until each leg of the subject 1 passes through each leg opening of the diaper 2. It is preferable to continuously obtain the center-of-gravity fluctuation at all times while performing the operation. However, such a measurement mode is not limited to this, and the center-of-gravity sway of a part of the operation during the operation of passing each leg through each leg opening of the diaper 2 while sitting is obtained. Also good. For example, the continuous center-of-gravity sway is calculated while performing the operation from the posture shown in FIG. 3A until the posture in which only one leg of the subject 1 passes through one leg opening of the diaper 2. Also good.

  3B is performed from the posture shown in FIG. 3A, and the motion of the center of gravity is measured by performing the operation until each leg of the subject 1 passes through each leg opening of the diaper 2. When it is, it is preferable to shoot a moving image of the operation and to link the measurement result of the sway of gravity and the captured moving image. As a result, the measurement result of the center of gravity fluctuation can be accurately associated with the movement of the subject 1, and a more accurate evaluation can be performed.

  In this evaluation method, the diaper is based on the degree of swaying of the center of gravity shown in FIG. 4, that is, when the subject 1 in a sitting posture moves his / her leg through the leg opening of the diaper 2. The difficulty of 2 is easy to evaluate. Specific parameters relating to the center of gravity fluctuation include (a) total trajectory length, (b) outer circumference area, (c) front and rear trajectory length, (d) left and right trajectory length, (e) front and rear maximum amplitude, and (f) left and right maximum amplitude. Etc. are raised. Hereinafter, each of these parameters will be described.

(A) Total locus length As shown in FIG. 5, when the position of the center of gravity at a certain time T _i is P _i , the time after the minute time has elapsed is T _{i + 1} , and the position of the center of gravity at that time is P _{i + 1} . The instantaneous fluctuation length ΔL _i is calculated by the following equation (a1). By integrating this over the measurement time, the total trajectory length is obtained as shown in equation (a2). In the formula (a2), n represents the number of samples (the same applies to the following (c1) and (d1)). Further, the x direction in FIG. 5 matches the left-right direction in FIG. 4, and the y direction in FIG. 5 matches the front-back direction in FIG.

(B) Outer peripheral area The outer peripheral area is an inner area surrounded by the outermost part of the locus of gravity center fluctuation, that is, a comprehensive area.

(C) Front and rear trajectory length and (d) Left and right trajectory length The front and rear trajectory length is an amount obtained by integrating the instantaneous movement distance y _i along the y direction in FIG. 5 over the measurement time. is there. The integration formula is as shown in (c1) below. On the other hand, the left and right track length is the amount calculated by the left-right direction of the center of gravity, i.e. the instantaneous movement distance x _i along the x direction in FIG. 5, is integrated over the measurement time. The integration formula is as shown in (d1) below.

(E) Maximum front-rear amplitude and (f) Maximum left-right amplitude The front-rear maximum amplitude is the distance between the front and rear ends of the center-of-gravity fluctuation, that is, the y-direction in FIG. On the other hand, the left and right maximum amplitude is a distance between the rightmost part and the leftmost part along the x direction in FIG.

  At least one of the parameters (a) to (f) described above is adopted, and the difficulty of putting on the diaper 2 is evaluated based on the value of the parameter. For example, when the total trajectory length of (a) is adopted as a parameter, the shorter the value of this parameter, the more the diaper 2 is evaluated as a diaper that is easy to wear. Conversely, the longer the value of the parameter is, the more likely that the diaper 2 is a diaper that is difficult to wear.

  When the outer peripheral area of (b) is adopted as a parameter, the smaller the value of the parameter, the more the diaper 2 is evaluated as a diaper that is easy to wear. Conversely, the larger the parameter value, the more the diaper 2 is evaluated as a diaper that is difficult to wear.

  When the front and back trajectory length of (c) or the left and right trajectory length of (d) is adopted as a parameter, the shorter the value of those parameters, the more the diaper 2 is evaluated to be an easy-to-wear diaper. . Conversely, the longer the value of the parameter, the more the diaper 2 is evaluated as a diaper that is difficult to wear.

  When the maximum amplitude before and after (e) or the maximum left and right amplitude of (f) is adopted as a parameter, the shorter the value of those parameters, the more the diaper 2 is evaluated as a diaper that is easy to wear. . Conversely, the longer the value of the parameter is, the more likely that the diaper 2 is a diaper that is difficult to wear.

  In this evaluation method, at least one of the parameters (a) to (f) described above is adopted, and the difficulty of putting on the diaper 2 can be evaluated using that as an index. Alternatively, a combination of two or more of the parameters (a) to (f) described above is adopted, and the difficulty of putting on the diaper 2 can be evaluated using the combination as an index. Examples of combinations include a combination of (a) and (b), a combination of (a) and (d), a combination of (a) and (f), and the like. When evaluating the difficulty of putting on the diaper 2 based on these combinations, the weighting of the two parameters may be 1: 1, and 1: x (x represents a real number exceeding 0. However, 1 is excluded. .)

  In this evaluation method, in addition to the degree of center-of-gravity shaking of the subject 1 when the leg is passed through the leg opening of the diaper 2, the subject 1 is seated with the diaper 2 lowered to the knee or the vicinity thereof. The difficulty of putting on the diaper 2 may be evaluated based on the degree of center-of-gravity fluctuation of the subject 1 when performing the operation from the sitting state to taking off the diaper 2. That is, even if the degree of center of gravity fluctuation of the subject 1 when performing the series of operations shown in FIGS. 3 (g) to 3 (i) described above is weighted, the difficulty of putting on the diaper 2 is evaluated. Good. The degree of center-of-gravity fluctuation can be evaluated based on any one or any combination of two or more of the parameters (a) to (f) described above. In this case, the degree of center-of-gravity swing of the subject 1 when performing the operation of passing the leg opening leg of the diaper 2 and the degree of center-of-gravity swing of the subject 1 when performing the operation from the state where the diaper 2 is pulled down until the leg is pulled out. May be evaluated with a weight of 1: 1, or may be evaluated with a weight of 1: x (x represents a real number greater than 0, except 1).

  Furthermore, in this evaluation method, each leg of the subject 1 is placed on each leg of the diaper 2 in addition to the degree of the center of gravity of the subject 1 when the leg is passed through the leg opening of the diaper 2 while sitting. From the posture through the opening, the subject 1 stands up, and until the diaper 2 is pulled up to the wearing state, that is, based on the degree of the sway of the center of gravity of the subject 1 during the lifting operation of the diaper 2, Ease of difficulty may be evaluated. That is, even if the degree of center of gravity fluctuation of the subject 1 when performing the series of operations shown in FIG. 3 (c) to FIG. 3 (e) described above is weighted, the difficulty of putting on the diaper 2 is evaluated. Good. FIG. 6 shows an example of the measurement result of the center of gravity fluctuation when the series of operations shown in FIG. 3C to FIG. 3E is performed.

  In FIG. 6, the position of the coordinate 0 on the vertical axis coincides with the midline of the subject 1. In the same figure, the locus of center of gravity fluctuation is indicated by L. In the drawing, the right half area A1 toward the paper surface is a measurement result based on a signal from the first sensor 21, and the left half area A2 is a measurement result based on a signal from the second sensor 22. As is clear from the results shown in the figure, when the series of operations shown in FIGS. 3C to 3E is performed, the center of gravity moves on a straight line substantially along the midline. The degree of sway of the center of gravity of the subject 1 when performing the series of operations shown in FIGS. 3C to 3E is also any one of the parameters (a) to (f) described above or Evaluation can be based on any combination of two or more. Further, when evaluating the difficulty of putting on the diaper 2 based on the two combinations, the weighting of the two parameters may be 1: 1, and 1: x (x represents a real number exceeding 0. However, 1 May be excluded).

  Furthermore, in this evaluation method, in addition to the degree of center of gravity fluctuation of the subject 1 when the leg is passed through the leg opening of the diaper 2 while sitting, the lowering operation of the diaper 2, that is, the diaper 2 is performed. The difficulty of putting on the diaper 2 may be evaluated based on the degree of center of gravity fluctuation of the subject 1 during the movement from the wearing state to the knee or a position near the knee in a standing state. That is, even if the degree of center of gravity fluctuation of the subject 1 when performing the series of operations shown in FIGS. 3 (e) to 3 (g) described above is weighted, the difficulty of putting on the diaper 2 is evaluated. Good. The degree of sway of the center of gravity of the subject 1 when performing the series of operations shown in FIGS. 3 (e) to 3 (g) is any one of the parameters (a) to (f) described above or Evaluation can be based on any combination of two or more. The same applies to the weighting in the case of evaluating the difficulty of putting on the diaper 2 based on the two combinations.

  In this evaluation method, (i) the degree of sway of the center of gravity of the subject 1 when the leg is moved through the leg opening of the diaper 2 (leg insertion), and (ii) each leg is placed in the leg opening of the diaper 2 The degree of the subject's center of gravity swinging during the lifting operation (lifting) after passing, (iii) The degree of the subject's center of gravity swinging during the lowering operation (lowering) of the diaper 2, and (iv) the diaper 2 at the knee or The diaper 2 is based on the degree of center-of-gravity fluctuation of the subject 1 during the operation (extraction of the leg) from the state in which the leg is pulled out to the position near the position and the diaper 2 is removed. You may evaluate the difficulty of wearing.

  As described above, in this evaluation method, the leg of the subject 1 is passed through the diaper 2, the diaper 2 is pulled up to complete the wearing state, then the diaper 2 is pulled down from the wearing state, and the diaper 2 is further pulled out. Since the center of gravity fluctuation of the subject 1 during the attaching / detaching operation can be continuously measured, and the difficulty of putting on the diaper 2 is evaluated based on the continuously measured center of gravity fluctuation, it is described in Patent Document 2. It is possible to make evaluations that are more in line with the actual situation than conventional technologies. In this respect, the evaluation can be performed with higher accuracy than in the prior art. Furthermore, by taking a series of motion pictures and associating them with the measurement of the center of gravity, the parameters (a) to (f) are disassembled for each operation, that is, leg insertion, lifting, lowering, and leg removal. Can be evaluated. This also makes it possible to evaluate with higher accuracy than in the prior art.

  Hereinafter, the present invention will be described in more detail with reference to examples. However, the scope of the present invention is not limited to such examples.

  Commercially available underwear (100% cotton smooth rose (M size), product name Shimax, Shimamura Co., Ltd.) and two commercially available pants-type disposable diapers (product A and product B) from different manufacturers were used as samples. Underwear and diapers were put on 15 subjects in the 60s and 70s in accordance with the operations shown in FIGS. 3 (a) to 3 (i), and the difficulty of wearing at that time was sensorially evaluated. All subjects selected those who did not normally wear diapers. The sensory evaluation was performed by VAS (visual Analogue Scale). In the VAS, “difficult to put on diapers” was set to 0, “easy to put on diapers” was set to 5, and the interval between them was set in increments to select the ease of putting on the diaper felt by the subject by numerical values. The result was as shown in FIG.

  Next, using the measuring apparatus 10 shown in FIG. 1, the subject was subjected to the same operation as that performed when the sensory evaluation was performed, and the center-of-gravity fluctuation was measured. At this time, a series of movements of the subject's attachment and detachment motions are video-recorded, and the video is linked to the measurement results of the center of gravity fluctuation, and the center-of-gravity fluctuations are separated for each of the subject's leg insertion, diaper pulling, diaper lowering, and leg removal operations. It was. And about each operation | movement, the correspondence with (a) total locus | trajectory length, (b) outer periphery area, (c) front-and-back locus | trajectory length, and (d) right-and-left locus | trajectory length was calculated | required. The results are shown in FIGS. Also, FIGS. 12A and 12B show the relationship between the total trajectory length of a series of attachment / detachment operations and the total trajectory length of the separated subject's leg insertion motion and sensory evaluation.

As is apparent from the results shown in FIGS. 8 to 11, according to this evaluation method, it is understood that the measurement result of the center of gravity fluctuation correlates with the difficulty of wearing the diaper.
In particular, as shown in FIG. 8, it can be seen that the pulling operation has a larger difference in trajectory length than the leg pulling operation and the pulling operation. Further, it can be seen that the difference in the trajectory length is larger in the leg insertion operation than in the pulling operation. This means that the leg insertion operation is more effective for evaluating the difficulty of putting on the diaper than the pulling operation. Further, it can be seen that the leg insertion operation has a longer total trajectory length than other operations, and the subject fluctuates. Therefore, it can be seen that the evaluation in conformity with the actual situation can be performed by performing the evaluation while paying attention to the leg insertion operation.

  Further, as apparent from the comparison between FIG. 12 (a) and FIG. 12 (b), the series of attaching / detaching operations of the diaper shown in FIG. 12 (a) is only the leg putting operation shown in FIG. 12 (b). It can be seen that the evaluation can be performed with higher accuracy than that.

DESCRIPTION OF SYMBOLS 1 Test subject 2 Underpants type disposable diaper 10 Center of gravity fluctuation measuring device 11 Seat surface 12 Chair 13 Rotating handle 21 First sensor 22 Second sensor

Claims (7)

Using the sensor of the center of gravity sway meter, when the wearer is placed in a sitting position and the leg is passed through the leg opening of the pants-type disposable diaper while sitting from that position And evaluating the difficulty of wearing a pants-type disposable diaper based on the degree of center of gravity fluctuation measured,
The sensor is divided into a first sensor and a second sensor, the first sensor is placed under the wearer's buttocks in a sitting posture, the second sensor is placed under the sole, and measurements obtained by each sensor A method of obtaining a continuous sway of the center of gravity while performing the operation and evaluating the difficulty of wearing a pants-type disposable diaper based on the degree of the continuous sway of the center of gravity.   In addition to the degree of swing of the center of gravity of the wearer when the leg is passed through the leg opening of the pants-type disposable diaper while sitting, each leg is placed on each leg opening of the pants-type disposable diaper. A request for evaluating the difficulty of wearing a pants-type disposable diaper based on the degree of swinging of the center of gravity of the wearer while the wearer stands up from the passed position and the diaper is pulled up to the wearing state. Item 2. The method according to Item 1.   The method according to claim 1 or 2, wherein a total trajectory length in center of gravity fluctuation is obtained, and the difficulty of wearing a pants-type disposable diaper is evaluated based on the total trajectory length.   The method of Claim 1 or 2 which calculates | requires the outer periphery area in center-of-gravity shaking, and evaluates the difficulty of a pants type disposable diaper's ease of wearing based on this outer periphery area.   The method according to claim 1 or 2, wherein the front-rear trajectory length or the left-right trajectory length in center-of-gravity fluctuation is obtained, and the difficulty of wearing a pants-type disposable diaper is evaluated based on the front-rear trajectory length or the left-right trajectory length.   The method according to claim 1 or 2, wherein a maximum front-rear amplitude or a left-right maximum amplitude in center-of-gravity shaking is obtained, and the difficulty of wearing a pants-type disposable diaper is evaluated based on the front-rear maximum amplitude or the left-right maximum amplitude. The motion of the wearer when measuring the center of gravity shake is recorded as a video, and the motion of the center of gravity when the wearer performs a series of motions by linking the captured video with the measurement result of the center of gravity shake. From the results, the measurement result of the center-of-gravity fluctuation in the operation of passing the leg through the leg opening of the pant-type disposable diaper while sitting is separated, and the difficulty of putting on the pant-type disposable diaper is evaluated. 7. A method according to any one of claims 1-6.