CN108205943A - massage manipulation training device and method - Google Patents

Abstract

The embodiment of the invention discloses a massage manipulation training device and method. The device includes a silica gel plate, at least one pressure sensor unit and a processing unit embedded in the silica gel plate, the silica gel plate is used to simulate the structure of human skin; the pressure sensor unit includes a unit body with a set shape and a thin film pressure sensor arranged inside it, each The thin-film pressure sensors are used to respectively detect the massage force applied by the massager on the unit body, and send the detection results to the processing unit; the processing unit is used to determine the characteristic parameters of massage according to the detection results of the thin-film pressure sensors corresponding to the target pressure sensor unit , the characteristic parameters of massage include: the magnitude, direction and frequency of massage force. The above-mentioned device can make an objective evaluation on the massage technique of the massager, so that doctors, especially novice doctors who lack clinical experience, can quickly master the massage techniques of traditional Chinese medicine.

Description

Massage manipulation training device and method

technical field

The embodiments of the present invention relate to the technical field of medical teaching, in particular to a massage manipulation training device and method.

Background technique

Traditional Chinese medicine treatment is mainly based on traditional Chinese medicine treatment and massage treatment. Diarrhea in infants and young children is one of the dominant diseases of traditional Chinese medicine. The treatment of diarrhea in infants and young children by TCM massage has a long history, definite curative effect, and is simple and easy to implement. The method of massage to treat diarrhea acts on the body, can regulate the autoimmunity of children, and can effectively regulate their gastrointestinal motility and improve gastrointestinal blood circulation to achieve the purpose of treatment. The method neither brings pain to the children nor has side effects, and solves the problems of difficulty in taking medicine and fear of injections in infants and young children. Therefore, massage is easily accepted by children and parents, and it is worth promoting.

However, TCM massage techniques are easy to resemble in form but not in spirit, and are not easy to master. At present, the teaching methods of traditional Chinese medicine massage are outdated and the teaching methods are backward. Most of the teaching modes are still sandbag exercises or human body exercises, which are classroom-centered and teacher-centered. The teaching of postgraduates is basically the form of masters leading apprentices, and there is a serious lack of active participation mechanisms for students. Therefore, the field of TCM massage is faced with problems such as insufficient manpower of experienced physicians, too long standard training time for newcomers, and no objective evaluation system. There is an urgent need for a training model to help doctors, especially novice doctors who lack clinical experience, quickly master TCM massage techniques .

Contents of the invention

Embodiments of the present invention provide a massage manipulation training device and method to help doctors, especially novice doctors who lack clinical experience, quickly master Chinese medicine massage manipulation.

In the first aspect, the embodiment of the present invention provides a massage manipulation training device, including:

A silica gel plate, at least one pressure sensor unit embedded in the silica gel plate, and a processing unit, wherein,

The silica gel plate is used to simulate the skin structure of the human body;

The pressure sensor unit includes a unit body with a set shape, and at least three thin-film pressure sensors arranged inside the unit body, each of the thin-film pressure sensors is used to detect whether the massager is applied to the body through the silicone plate. massage force on the unit body, and send the detection result to the processing unit;

The processing unit is configured to determine, according to the detection results of each of the thin-film pressure sensors corresponding to the target pressure sensor unit, the massage characteristic parameters of the massager acting on the target pressure sensor, wherein the massage characteristic parameters Including: the magnitude of the massage force, the direction of the massage force and the frequency of massage.

In the second aspect, the embodiment of the present invention also provides a massage manipulation training method, which is implemented by using the massage manipulation training device described in any embodiment of the present invention, and the method includes:

Obtain the detection results of the corresponding thin film pressure sensors when the massager is massaging through the target pressure sensor unit;

According to the detection results of the various thin-film pressure sensors, the massage characteristic parameters of the massager acting on the target pressure sensor unit are determined, wherein the massage characteristic parameters include: the magnitude of the massage force, the direction of the massage force, and the massage force frequency.

The embodiment of the present invention provides a massage technique training device and method, through which the massage technique training device can make an objective evaluation of the massage technique of the massager, so that doctors, especially novice doctors who lack clinical experience, can quickly master the traditional Chinese medicine massage technique. During the training process, by determining the magnitude of the massage force, the direction of the massage force, and the massage frequency that the massager acts on the target pressure sensor, the massager can objectively recognize their own shortcomings according to these massage characteristic parameters, and further strengthen the training to improve Massage technique.

Description of drawings

Fig. 1 is a schematic structural view of a massage manipulation training device in Embodiment 1 of the present invention;

FIG. 2 is a schematic structural diagram of a pressure sensor unit in Embodiment 1 of the present invention;

Fig. 3 is an example diagram of the arrangement of a pressure sensor unit group in Embodiment 1 of the present invention;

4 is a schematic structural view of a pressure sensor unit in Embodiment 1 of the present invention;

5 is a schematic structural diagram of a pressure sensor unit in Embodiment 1 of the present invention;

6 is a schematic structural diagram of a pressure sensor unit in Embodiment 1 of the present invention;

Fig. 7 is a schematic structural diagram of a pressure sensor unit in Embodiment 1 of the present invention;

Fig. 8 is a schematic structural diagram of a pressure sensor unit in Embodiment 1 of the present invention;

Fig. 9 is a schematic diagram of a human-imitating massage manipulation training device in Embodiment 1 of the present invention;

Fig. 10 is a flow chart of a massage manipulation training method in Embodiment 2 of the present invention.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.

In addition, it should be noted that, for the convenience of description, only parts related to the present invention are shown in the drawings but not all content. Before discussing the exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although the flowcharts describe various operations (or steps) as sequential processing, many of the operations may be performed in parallel, concurrently, or simultaneously. In addition, the order of operations can be rearranged. The process may be terminated when its operations are complete, but may also have additional steps not included in the figure. The processing may correspond to a method, function, procedure, subroutine, subroutine, or the like.

Embodiment one

This embodiment provides a massage manipulation training device, which is suitable for doctors, especially novice doctors who lack clinical experience, to practice traditional Chinese medicine massage manipulation. As shown in FIG. 1 , the massage manipulation training device includes a silica gel plate 110, at least one pressure sensor unit 120 embedded in the silica gel plate, and a processing unit 130, wherein,

The silica gel plate 110 is used to simulate the skin structure of the human body;

The pressure sensor unit 120 includes a unit body 121 with a set shape, and at least three thin-film pressure sensors 122 arranged inside the unit body 121. Each thin-film pressure sensor 122 is used to detect whether the massager is applied to the unit body 121 through the silicone plate 110. massage force on the body, and send the detection result to the processing unit 130;

The processing unit 130 is configured to determine the massage characteristic parameters of the massager acting on the target pressure sensor unit according to the detection results of each thin film pressure sensor 122 corresponding to the target pressure sensor unit, wherein the massage characteristic parameters include: the size of the massage force, The direction of massage force and the frequency of massage.

As a specific embodiment, the shape of the unit body 121 of the pressure sensor unit 120 is an isosceles triangle. In the unit body 121, at least four thin-film pressure sensors 122 are arranged in a herringbone shape, and the shape of the thin-film pressure sensors 122 is a circle. shape, as shown in Figure 2.

In this embodiment, the silica gel plate 110 may be a three-layer silica gel plate for simulating the skin structure of a human body, and the thickness ratio of the three-dimensional structure and the texture of the silica gel are similar to those of a real human body.

The pressure sensor unit 120 sends the detected data to the processing unit 130 by detecting the pressure applied by the doctor through the silicone plate 110, and the processing unit 130 analyzes and determines the characteristic parameters of the massage that the doctor acts on the pressure sensor unit 120, including The magnitude of the massage force, the direction of the massage force and the frequency of massage.

The two lead-out ends on each membrane pressure sensor 122 in the pressure sensor unit 120 send the detected pressure value to the processing unit 130, and an A/D conversion module can also be added to convert the pressure value into a voltage value for display, wherein each The voltage value of each membrane pressure sensor 122 has a certain functional relationship with the pressure value detected by it.

There are many kinds of massage techniques in traditional Chinese medicine, and the kneading method during massage needs to be quantitatively described in three aspects: the direction, magnitude and frequency of the force.

A single sensor cannot distinguish the direction of the doctor's manipulation, but this problem can be well solved by using a pressure sensor unit 120 to determine the direction of the massage force. "Shun is for nourishment, reverse is for venting", which means that if it is for health care, the direction of massage should be clockwise, if it is for treating diarrhea and abdominal pain, it should be counterclockwise. Different membrane pressure sensors 122 correspond to different channels. By checking which of the four channels has a signal first, find the first force-bearing membrane pressure sensor 122, and then find the second force-bearing membrane pressure sensor according to this method 122, you can judge whether it is clockwise or counterclockwise.

The effect of the massage technique largely depends on the magnitude of the massage force. Tuina doctors with clinical experience will give different strengths during massage according to the different physiological characteristics of the patients. The direction of the force in the massage manipulation can be decomposed into horizontal and vertical component forces, but what works is the vertical component force, which can be detected by the membrane pressure sensor 122 .

Massage frequency also plays a vital role in the effect of massage techniques, and massage effects of different frequencies are also different. The doctor’s finger pulp or palm cannot leave the skin surface during massage. Therefore, a single sensor cannot measure the doctor’s massage frequency, and it is impossible to judge whether the massage practitioner’s massage frequency is correct. The massage frequency of the massager can be determined by the number of pressure values detected by each membrane pressure sensor 122 in the pressure sensor unit 120 within a unit time period.

The processing unit 130 acquires the pressure values detected by each thin film pressure sensor 122 in the pressure sensor unit 120, and determines the characteristic parameters of the massage performed by the massager on the target pressure sensor. For example, the pressure average value of each membrane pressure sensor 122 can be used as the magnitude of the massage force, and the direction of the massage force can be determined according to the order in which each membrane pressure sensor 122 detects the pressure value, and the pressure detected by each membrane pressure sensor 122 per unit time can be The number of values is used as the massage frequency.

Most of the acupuncture points can be covered by the pulp of a finger, and a pressure sensor unit 120 can be used to collect the complete force data of the acupuncture points. However, for some special acupuncture points, such as Guwei point, spleen meridian, etc., the pressure sensor unit 120 cannot collect the complete force data of the acupuncture point, because the area to which these acupuncture points belong is relatively wide. At this time, multiple pressure sensor units 120 are needed, and the number of sensor units required should be determined according to the arrangement and range of the actual acupuncture points of the human body, so as to collect the complete force data of the acupuncture points. Figure 3 shows multiple pressure sensor units An example of the arrangement of the pressure sensor unit group composed of 120. Correspondingly, the processing unit is specifically configured to determine, according to the detection results of the thin film pressure sensors 122 corresponding to the target pressure sensor unit group, the massaging characteristic parameters of the massager acting on the target pressure sensor unit group, the pressure sensor unit group including at least A pressure sensor unit 120 .

As another specific embodiment, the shape of the unit body 121 of the pressure sensor unit 120 is a rectangle, and in the unit body 121, at least three thin-film pressure sensors 122 are arranged in an arc shape or a circle, wherein the thin-film pressure sensor 122 is fan-shaped or trapezoidal in shape. FIG. 4 to FIG. 7 are corresponding example diagrams, and the number of membrane pressure sensors 122 in each diagram is just an example, and is not specifically limited in this embodiment. For specific human acupoints, different pressure sensor units 120 can be selected. The size of the pressure sensor unit 120 matches the coverage area of the human acupoints. Among them, in order to correctly collect the massage characteristic parameters applied by the doctor on the corresponding acupoints, the shape is fan-shaped Or the trapezoidal thin-film pressure sensor 122 may be custom-made.

For example, for the Shenque acupoint at the navel, you can use the pressure sensor unit 120 as shown in Figure 4, and use your fingertips to knead counterclockwise 100 to 300 times; for the Tianshu acupoints on the left and right sides of the navel, you can use the For the pressure sensor unit 120, press and knead the left Tianshu point counterclockwise for 100-150 times, and press and rub the right Tianshu point clockwise for 100-150 times; for the Dantian point at the lower part of the navel, you can choose For the pressure sensor unit 120 described in 4, use the palm or finger pulp to rub clockwise 100 to 300 times; for the Banmen acupoint at the root of the thumb, you can choose the pressure sensor unit 120 as shown in Figure 5, and use the finger pulp to rub clockwise 100 times. ~ 300 times; for the Nei Bagua acupoint on the center of the palm, you can use the pressure sensor unit 120 shown in Figure 6, and use your thumb to move the Nei Bagua 100 to 300 times clockwise or counterclockwise; for the Zhongwan point on the upper part of the navel, you can use For the pressure sensor unit 120 shown in FIG. 7 , press and knead clockwise 100 to 300 times with the palm.

As yet another specific embodiment, the shape of the unit body 121 of the pressure sensor unit 120 is a rectangle. In the unit body 121, at least three thin-film pressure sensors 122 are arranged in a straight line, as shown in FIG. 8 , wherein the thin-film The shape of the pressure sensor 122 is a rectangle or a square.

For example, for the spleen meridian at the thumb, you can choose the pressure sensor unit 120 as shown in Figure 8, and push straight along the radial edge of the thumb to the root of the palm to invigorate the spleen meridian, and push straight from the finger end to the root of the finger to clear the spleen The two are collectively referred to as the Tui Spleen Meridian.

Further, the silica gel plate 110 can be set in a shape imitating a human body, and at least one pressure sensor unit 120 is correspondingly embedded at a position in the silica gel plate 110 corresponding to at least one acupuncture point of the human body.

As shown in Figure 9, the silica gel plate 110 can be made into an infant-like shape, and at least one pressure sensor unit 120 can be correspondingly embedded in the position corresponding to each acupuncture point of the human body, and the stress state of each pressure sensor unit 120 can be used as a corresponding The force state of the acupoints is used to simulate the real human acupoint massage.

As shown in Figure 9, the above-mentioned massage manipulation training device also includes: a myoelectric signal detection unit 140, which is connected to the processing unit, and is used to detect the muscle contraction change state when the massager is massaging, and sends the detection result to the processing unit; the processing unit It is also used for: correspondingly storing the combination of the detection result of the myoelectric signal detection unit and the associated massage characteristic parameters as massage manipulation data.

The processing unit acquires the myoelectric signal collected by the myoelectric signal detection unit 140, combined with the massage characteristic parameters determined by the pressure value detected by the pressure sensor unit 120, it can more accurately determine the massager's massage technique, especially the massager's massage Posture, such as the angle between the arm and the massage point. By analyzing the posture of the massager during massage, the problem of the massager can be more accurately determined, so that the massage technique can be standardized as soon as possible.

Specifically, the above-mentioned massage manipulation training device further includes: a data storage unit, connected to the processing unit, for storing the massage manipulation data and each standard massage manipulation data, wherein each standard massage manipulation data is composed of acupoints and patient Determination of physical symptoms;

The processing unit is further configured to: compare and analyze the massage manipulation data and the matched standard massage manipulation data, so as to make an objective evaluation on the massager.

According to the different physiological diseases of the patients, experienced doctors will adopt different massage techniques to treat the symptoms. Various standard massage manipulation data can be stored in the data storage unit. Each standard massage manipulation data is the massage manipulation data acquired by the processing unit through the pressure sensor unit and the electromyography signal detection unit when an experienced doctor performs simulated treatment through the above massage manipulation training device according to the different physiological diseases of the patient. The massage trainer can perform massage exercises for the physiological diseases corresponding to the standard massage manipulation data prestored in the data storage unit.

The processing unit compares and analyzes the massage trainer's massage manipulation data and the matching standard massage manipulation data, which may be to compare the data obtained by the pressure sensor unit and the myoelectric signal detection unit with each data in the matching standard massage manipulation data. Comparing respectively, it is also possible to set and fit the data obtained by the pressure sensor unit and the myoelectric signal detection unit before performing comparative analysis, so as to make an objective evaluation of the training of the massager, such as the size of the massage force. Within the standard range, the direction of the massage force is incorrect, the massage frequency is too fast or too slow, and the massage posture is incorrect, etc.

Through the massage technique training device provided in this embodiment, it is possible to make an objective evaluation of the massage technique of the massage trainer, so that doctors, especially novice doctors who lack clinical experience, can quickly master the massage technique of traditional Chinese medicine. During the training process, the massaging posture is determined by determining the magnitude of the massaging force, the direction of the massaging force, and the massaging frequency of the massaging person acting on the target pressure sensor group, and the muscle changes of the massaging person detected by the myoelectric signal detection unit. Comparing the data of standard massage manipulations that match the disease enables the massager to objectively recognize their own shortcomings based on the analysis results, and further strengthen training to improve their massage skills.

Embodiment two

This embodiment provides a massage manipulation training method, which is implemented by using the massage manipulation training device provided by any embodiment of the present invention, and is suitable for doctors, especially novice doctors who lack clinical experience, to practice traditional Chinese medicine massage manipulation. As shown in Figure 10, the massage manipulation training method specifically includes:

S210. Obtain the detection results of the corresponding thin film pressure sensors during massage by the massager through the target pressure sensor unit.

When a massage trainer uses the massage manipulation training device to practice for a certain physiological disease, when the massage force is applied to the target pressure sensor unit through the silica gel plate, each thin film pressure sensor in the target pressure sensor unit will detect the existence of pressure successively.

S220. According to the detection results of the thin film pressure sensors, determine the massage characteristic parameters of the massager acting on the target pressure sensor unit, wherein the massage characteristic parameters include: the magnitude of the massage force and the direction of the massage force and massage frequency.

According to the pressure value detected by each membrane pressure sensor, the time sequence of the detected pressure value, and the number of pressures detected by each membrane pressure sensor per unit time, combined with the arrangement position of each membrane pressure sensor, the massage force can be determined respectively The size, direction of massage force and frequency of massage.

The massage manipulation training method provided in this embodiment is implemented by using the massage manipulation training device provided in any embodiment of the present invention, and the target pressure sensor unit is used to obtain the detection results of the corresponding thin film pressure sensors during massage by the massager. According to the The detection results of each thin-film pressure sensor determine the technical means of the massage characteristic parameters of the massager acting on the target pressure sensor unit. Three key parameters of the massage technique can be determined, namely the size of the massage force, the direction of the massage force and the massage frequency. These three massage manipulation parameters can directly determine whether the massager can relieve the patient's symptoms.

Specifically, the above-mentioned massage manipulation training method, after determining the massage characteristic parameters that the massager acts on the target pressure sensor unit, further includes:

The detection result of the muscle contraction change state of the massager during massage is acquired by the electromyographic signal detection unit, so as to determine the massage posture of the massager acting on the target pressure sensor unit.

Combined with the muscle contraction changes of the massager's arm during massage obtained by the EMG signal detection unit, the massage technique of the massager, especially the massage posture, can be more accurately determined. The correctness of the massage posture also directly affects the massage effect.

As an optional implementation of this embodiment, the combination of the detection result of the myoelectric signal detection unit and the associated massage feature parameters can be stored as massage manipulation data, and the massage manipulation data and the matching pre-stored standard The massage manipulation data is comparatively analyzed to make an objective evaluation of the massagers.

The combination of the detection results of the EMG signal detection unit and the associated massage feature parameters is stored as massage manipulation data, either locally or in a specific data storage unit, so as to establish a personal database for massage training for massagers. The problem of the massage technique can be determined by analyzing the data of its multiple massage techniques.

Each standard massage manipulation data is the massage manipulation data acquired by the processing unit through the pressure sensor unit and the electromyography signal detection unit when an experienced doctor performs simulated treatment through the above massage manipulation training device according to the different physiological diseases of the patient.

Specifically, the detection result of the myoelectric signal detection unit in the massage manipulation data and the associated massage feature parameters can be respectively matched with the standard detection result of the myoelectric signal detection unit in the pre-stored standard massage manipulation data and the associated The standard massage feature parameters are compared and analyzed to determine whether the massaging force, the direction of the massaging force, the frequency of massaging and the massaging posture of the masseur are correct.

If it is determined that the size of the massage force, and/or the direction of the massage force, and/or the massage frequency, and/or the massage posture is wrong, then according to the comparative analysis results, a training guidance suggestion is proposed for the massager, for example, it can be massage force If the size of the massage force is not within the standard range, please adjust the size of the massage force, or the direction of the massage force is incorrect. If it is too fast or too slow, or if the massage posture is incorrect, please adjust it, etc.

Note that the above are only preferred embodiments of the present invention and applied technical principles. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and can also include more other equivalent embodiments without departing from the concept of the present invention, and the present invention The scope is determined by the scope of the appended claims.

Claims (10)

1. A massage manipulation training device, comprising: a silica gel plate, at least one pressure sensor unit and a processing unit embedded in the silica gel plate, wherein, The silica gel plate is used to simulate the skin structure of the human body; The pressure sensor unit includes a unit body with a set shape, and at least three thin-film pressure sensors arranged inside the unit body, each of the thin-film pressure sensors is used to detect whether the massager is applied to the body through the silicone plate. massage force on the unit body, and send the detection result to the processing unit; The processing unit is configured to determine, according to the detection results of each of the thin film pressure sensors corresponding to the target pressure sensor unit, the characteristic parameters of the massage performed by the massager on the target pressure sensor unit, wherein the massage characteristic The parameters include: the magnitude of the massage force, the direction of the massage force and the massage frequency. 2. The device according to claim 1, characterized in that, the shape of the unit body of the pressure sensor unit is a rectangle, and in the unit body, at least three thin-film pressure sensors are arranged in an arc shape or a circle . 3. The device according to claim 1 or 2, wherein the silica gel plate is shaped like a human body, and at least one of the pressure points is correspondingly embedded in the silica gel plate at a position corresponding to at least one acupuncture point of the human body. sensor unit. 4. The device according to claim 1, further comprising: a myoelectric signal detection unit, connected to the processing unit, for detecting the state of muscle contraction change when the massager is massaging, and sending the detection result to said processing unit; The processing unit is further configured to: correspondingly store the combination of the detection result of the myoelectric signal detection unit and the associated massage characteristic parameters as massage manipulation data. 5. The device according to claim 4, further comprising: a data storage unit, connected to the processing unit, for storing the massage manipulation data and each standard massage manipulation data, wherein each of the standard massage manipulation data The massage manipulation data is determined by the acupuncture points and the patient's physiological symptoms; The processing unit is further configured to: compare and analyze the massage manipulation data and the matched standard massage manipulation data, so as to make an objective evaluation on the massager. 6. A massage manipulation training method, characterized in that, it is performed by using the massage manipulation training device described in any one of claims 1-5, said method comprising: Obtain the detection results of the corresponding thin film pressure sensors when the massager is massaging through the target pressure sensor unit; According to the detection results of the various thin-film pressure sensors, the massage characteristic parameters of the massager acting on the target pressure sensor unit are determined, wherein the massage characteristic parameters include: the magnitude of the massage force, the direction of the massage force, and the massage force frequency. 7. The method according to claim 6, further comprising: The detection result of the muscle contraction change state of the massager during massage is acquired by the electromyographic signal detection unit, so as to determine the massage posture of the massager acting on the target pressure sensor unit. 8. The method according to claim 7, characterized in that, after the detection result of the muscular contraction state of the massager during the massage is obtained by the electromyographic signal detection unit, further comprising: The combination of the detection result of the myoelectric signal detection unit and the associated massage characteristic parameters is correspondingly stored as massage manipulation data; The massage manipulation data and the matching pre-stored standard massage manipulation data are compared and analyzed to make an objective evaluation of the massager. 9. The method according to claim 8, wherein said comparing and analyzing said massage manipulation data with matched pre-stored standard massage manipulation data comprises: The detection results of the myoelectric signal detection unit and the associated massage characteristic parameters in the massage manipulation data are respectively matched with the standard detection results of the myoelectric signal detection unit and the associated standard massage characteristic parameters in the pre-stored standard massage manipulation data Carry out comparative analysis to determine whether the size of the massage force, the direction of the massage force, the frequency of massage and the massage posture of the massager are correct. 10. The method according to claim 9, characterized in that, after determining whether the massaging force, the direction of the massaging force, the frequency of massaging and the massaging posture of the massaging person are correct, it further comprises: If it is determined that the magnitude of the massage force, and/or the direction of the massage force, and/or the massage frequency, and/or the massage posture is wrong, then according to the comparison and analysis results, a training instruction suggestion is proposed for the massager.