KR102327171B1 - Device for diagnosing edema - Google Patents

Abstract

Provided is an edema diagnosis device which simultaneously measures the perimeter and impedance of an edema site to perform precise diagnosis. According to the present invention, the edema diagnosis device comprises: an inner rotor formed to be surrounded at a predetermined distance by the circumferential surface of a subject having a predetermined length; at least two rolling members formed along the inner circumferential surface of the inner rotor, including a conductive material, and fixed to come in rolling contact with the circumferential surface of the subject; an elastic member having one side fixed to the inner rotor and allowing the other side to elastically support each of the rolling members on the other side; and an outer rotor disposed to surround the outer circumferential surface of the inner rotor at an interval and rotating integrally with the inner rotor. Accordingly, displacement of the rolling member reciprocating while being elastically supported by the elastic member is measured, and at the same time, the impedance of the subject is measured by applying a current between the rolling members.

Description

DEVICE FOR DIAGNOSING EDEMA

The present invention relates to a device for diagnosing edema, and more particularly, to a device for diagnosing edema capable of accurate diagnosis by measuring the circumference of a limb and bioimpedance.

In general, edema is a symptom of swelling of the body, which develops due to disturbance of blood or lymph circulation in any part or all of the body.

In particular, among edema, lymphedema refers to a phenomenon in which a lymphatic vessel is damaged or blocked, lymph fluid accumulates under the skin, and the arm or leg swells. Therefore, lymphedema is an abnormal accumulation of extracellular fluid at the site of disease.

Lymphedema as described above is diagnosed by judging the degree of swelling of the body by measuring the circumference or volume of the arms and legs. For accurate diagnosis of edema, it can be determined by periodically measuring the same area at the same time, and can be diagnosed by comparing the swollen side with the non-swollen side.

Conventionally, edema is diagnosed by measuring the volume of the body. This method of diagnosing edema by measuring the volume of the body simply determines the degree of edema according to the measured volume of the arms and legs. There are cases, and if edema is progressing, but there is no change in the volume of the arm or leg due to muscle atrophy, there is a problem that may lead to inaccurate diagnosis of edema.

Laid-Open Patent Publication No. 10-2017-0129511, 2017.11.27. open

An object of the present invention is to provide an edema diagnosis apparatus capable of accurate diagnosis by simultaneously measuring the perimeter and impedance of the edema site.

The problems to be solved by the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

An apparatus for diagnosing edema according to an embodiment of the present invention for solving the above problems is an inner rotor formed to be spaced apart from a circumferential surface of a subject having a predetermined length and wrapped around the inner rotor, the inner rotor being formed along the inner circumferential surface of the inner rotor, At least two rolling members comprising a conductive material and fixed to be in rolling contact with the circumferential surface of the subject, an elastic member having one side fixed to the inner rotor and the other side elastically supporting each of the rolling members, and the It includes an outer rotor that is disposed to surround and spaced apart from the outer circumferential surface of the inner rotor and rotates integrally with the inner rotor, and the displacement of the rolling member reciprocating while being elastically supported by the elastic member is measured and at the same time, the The impedance of the subject may be measured by applying a current between the rolling members.

A cross-sectional shape of the inner rotor may include a track circle centered on a central point of the inner rotor, and each of the rolling members may be disposed along the track circle.

Each of the rolling members may be disposed on an imaginary line passing through the center of rotation of the inner rotor and connecting the centers of rotation of each of the rolling members.

Each of the elastic members may be elastically supported so as to reciprocate on the virtual line formed toward the central point of the inner rotor for each of the respective rolling members.

A rolling member including a non-conductive material may be further included between each of the adjacent rolling members along the orbital circle.

At least two rolling members may be respectively disposed in a plurality of orbit circles disposed at different positions from the orbit circle along the longitudinal direction of the inner rotor.

The impedance of the subject can be measured using the current applied between the rolling member of any one conductive material located in the orbital circle and the rolling member of any one conductive material located in the orbital circle other than the orbital circle. .

The total number of the rolling elements arranged along the orbital circle may be an even number.

The edema diagnosis apparatus according to an embodiment of the present invention includes an inner rotor formed to be spaced apart from a circumferential surface of a subject having a predetermined length and wrapped around an outer circumferential surface of the inner rotor, and the inner rotor and An integrally rotated outer rotor, a plurality of orbital circles centered on the central point of the inner rotor along the rotational axis of the inner rotor, are disposed on each of the orbital circles, are formed along the inner circumferential surface of the inner rotor, and include a conductive material and at least two rolling members fixed to the circumferential surface of the subject so as to be in rolling contact, one side of each of which is fixed to the inner rotor, and an elastic member for elastically supporting each of the rolling members at the other end, Displacements reciprocating on each imaginary line formed toward the center point of the inner rotor in a state in which each pair of rolling members of the plurality of orbit circles are elastically supported by the respective elastic members are measured, and at the same time, the rolling The impedance of the subject may be measured by applying a current between the members.

Calculate the circumference of the subject by substituting the maximum and minimum values among the values obtained by subtracting the sum of the maximum travel distances of a pair of rolling members disposed on any one virtual line from the diameter of the outer rotor into the approximate formula of the circumference of the ellipse. can

A plurality of image pickup members may be provided on the inner circumferential surface of the inner rotor other than where the rolling member is disposed, and external information of the subject may be input by using the image pickup member.

The impedance of the subject may be measured using a current value applied between any one conductive rolling member of any one of the plurality of orbital circles and any one of the conductive rolling members of the other orbital circle.

The edema diagnosis apparatus may simultaneously measure the circumference and impedance of the subject for diagnosing lymphedema.

Other specific details of the invention are included in the detailed description and drawings.

According to the apparatus for diagnosing edema according to an embodiment of the present invention, it is possible to simultaneously measure the circumference of a limb and measure the bioimpedance for determining the composition of a body material.

In addition, it is possible to diagnose lymphedema at home or portable.

In addition, for continuous and effective observation of patients, it is possible to transmit information through diagnosis directly to a medical institution by being linked to a mobile terminal.

Effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the following description.

1 illustrates a state in which an edema diagnosis apparatus according to an embodiment of the present invention is worn on a subject.
2 is a cross-sectional view of an edema diagnosis apparatus according to an embodiment of the present invention.
3 is a diagram showing the measurement values for measuring the circumference of the subject of the edema diagnosis apparatus according to an embodiment of the present invention.
FIG. 4 shows the major axis and the minor axis of the subject of FIG. 1 .
FIG. 5 shows a state in which the electric circuit for measuring the impedance of FIG. 2 is connected.
6 illustrates a state in which the edema diagnosis apparatus according to an embodiment of the present invention transmits and receives measurement values using wireless communication.

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only these embodiments allow the disclosure of the present invention to be complete, and those of ordinary skill in the art to which the present invention pertains. It is provided to fully understand the scope of the present invention to those skilled in the art, and the present invention is only defined by the scope of the claims.

The terminology used herein is for the purpose of describing the embodiments and is not intended to limit the present invention. As used herein, the singular also includes the plural unless specifically stated otherwise in the phrase. As used herein, “comprises” and/or “comprising” does not exclude the presence or addition of one or more other components in addition to the stated components. Like reference numerals refer to like elements throughout, and "and/or" includes each and every combination of one or more of the recited elements. Although "first", "second", etc. are used to describe various elements, these elements are not limited by these terms, of course. These terms are only used to distinguish one component from another. Accordingly, it goes without saying that the first component mentioned below may be the second component within the spirit of the present invention.

Unless otherwise defined, all terms (including technical and scientific terms) used herein will have the meaning commonly understood by those of ordinary skill in the art to which this invention belongs. In addition, terms defined in a commonly used dictionary are not to be interpreted ideally or excessively unless specifically defined explicitly.

Spatially relative terms "below", "beneath", "lower", "above", "upper", etc. It can be used to easily describe the correlation between a component and other components. A spatially relative term should be understood as a term that includes different directions of components during use or operation in addition to the directions shown in the drawings. For example, when a component shown in the drawing is turned over, a component described as “beneath” or “beneath” of another component may be placed “above” of the other component. can Accordingly, the exemplary term “below” may include both directions below and above. Components may also be oriented in other orientations, and thus spatially relative terms may be interpreted according to orientation.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 shows a state in which the edema diagnosis apparatus according to an embodiment of the present invention is worn on a subject, FIG. 2 is a cross-sectional view of the edema diagnosis apparatus according to an embodiment of the present invention, and FIG. 3 is an embodiment of the present invention The measurement values for measuring the circumference of the subject of the edema diagnosis apparatus according to the embodiment are indicated to appear, FIG. 4 is the long axis and the short axis of the subject of FIG. 1, and FIG. 5 is the impedance of FIG. 2 It shows the state in which the electric circuit for measurement is connected.

First, referring to FIGS. 1 and 2 , the edema diagnosis apparatus according to an embodiment of the present invention may include an inner rotor 100 , a rolling member 110 , an elastic member 120 , and an outer rotor 200 . .

The inner rotor 100 may be formed so as to be spaced apart from the circumferential surface of the subject 1 of the subject (not shown) by a predetermined distance to surround it. Here, the subject 1 of the subject may be any one of the extremities. In other words, it may refer to either the arm or the leg of the subject.

The inner rotor 100 may be provided to rotate integrally with the outer rotor 200 as will be described later. In order for the inner rotor 100 and the outer rotor 200 to rotate integrally, both ends along the longitudinal direction of the inner rotor 100 are combined with the outer rotor 200 and rotate integrally, or the outer peripheral surface of the inner rotor 100 and Since a connection member (not shown) such as at least one rib structure is coupled between the inner circumferential surfaces of the outer rotor 200 , it may be implemented in various ways, such as integral rotation between the inner rotor 100 and the outer rotor 200 . The coupling structure for is not limited thereto.

When the shape of any one of the subject's arms or legs is divided into a plurality of cross sections of a predetermined unit along the length direction, the cross section shape of the subject 1 can be viewed as an approximately elliptical shape as shown in FIG. 4 , and the inner rotor (100) may be arranged to rotate around any one of the continuous objects of such a cross-sectional shape.

That is, the inner rotor 100 may be rotatably disposed around the cross-sectional shape of any one point of the subject 1 and may be rotatably formed with respect to the center of any one of the cross-sections of the subject 1 . have. In this case, the cross-sectional shape of the inner rotor 100 may be formed as a circle including a circular orbital circle G1.

The inner rotor 100 may include a plurality of rolling members 110 rotatably disposed about the center point C of the orbit circle G1. Here, each of the rolling members 110 is provided with at least two, and each rolling member 110 rotates while in contact with the circumferential surface of the subject 1 and simultaneously rotates the center of rotation of the inner rotor 100 . It can be arranged in a state where it can revolve around the center.

In other words, when each of the rolling members 110 is provided at least as a pair facing each other, it is fixed to the inner rotor 100, and as the inner rotor 100 rotates, it rotates (orbits) about the central point C. ), but may be formed to rotate (rotate) while maintaining a state (contact with clouds) in contact with the circumferential surface of the subject 1 .

In addition, each center of each rolling member 110 is via the center point C of the orbital circle G1 and may be disposed on an imaginary line PL connecting the rotation center of each rolling member 110, respectively. have.

The elastic member 120 has one side of the elastic member 120 fixed to the inner rotor 100 or the outer rotor 200 , and the other side of the elastic member 120 is in contact with the rolling member 110 to elastically support each rolling member 110 . do.

That is, in the process in which the rolling member 110 reciprocates along the direction in which the contact surface in contact with the subject 1 is compressed or expanded along the irregular curved surface of the outer edge of the subject 1 in the process of rotating the inner rotor 100, the rolling process By elastically supporting the opposite side of the contact surface of the member 110 , the rolling member 110 reciprocates elastically along the virtual line PL to maintain contact with the subject 1 .

In addition, the elastic member 120 may be coupled to be integrally rotated according to the rotation of the inner rotor 100 which is integrally rotated with the outer rotor 200 while being fixed to the inner rotor 100 . Here, the elastic member 120 is fixed to the outer rotor 200 by a separate support member 121 and integrally rotated according to the rotation of the inner rotor 100 and the outer rotor 200 bar, subject to be tested. If the contact between (1) and the rolling member 110 can be maintained, various fixing structures of the elastic member 120 are possible, so the fixing position of the elastic member 120 is not limited thereto.

Here, the rolling member 110 performs a rotation (rotation) motion while in contact with the surface of the subject 1, and a separate disinfection device (not shown) to prevent bacterial infection from the subject 1 city) may be provided. As an example, the disinfecting device that scatters, sprays, or sprays the disinfectant toward the surface of the rolling member 110 in the course of the rolling motion of the rolling member 110 is installed inside the rolling member housing (not shown), so that the rolling member ( The function of disinfecting the surface of the rolling member 110 during the rotational movement of 110 may be performed simultaneously. The disinfection device is a configuration for disinfecting the surface of the rolling member 110 in contact with the surface of the subject 1, and a disinfectant may be provided from the inner rotor 100 or the outer rotor 200 in addition to the rolling member housing. A structure such as a separate hose (not shown) or a tubular body (not shown) may be applied so that the present invention is not limited thereto.

Meanwhile, although not shown, a separate detection unit and a marker may be formed to limit the rotation range of the inner rotor 100 and the outer rotor 200 to a predetermined range. That is, when the detection unit is formed on the inner circumferential surface of the inner rotor 100 , and the marker is formed at a predetermined position of the subject 1 before rotation of the inner rotor 100 , the rotation of the inner rotor 100 starts. The initial position is set by detecting the position of the marker by the detection unit at the time, and when the position of the marker is reached again during the rotation of the inner rotor 100, it is recognized as one rotation or at the position of the marker additionally formed at another position. As it arrives, it is also possible to set a rotation range such as one rotation or a half rotation as described above.

Here, the marker may include a fluorescent sticker or a specific fluorescent material applied, and the detection unit may be a color sensor including a photodiode to detect the position of the marker whenever it reaches the position of the marker.

Referring to FIG. 3 together with FIG. 4 , since the major axis length d1 of the subject 1 is longer than the minor axis length d2, the cloud reciprocating along the major axis length d1 of the subject 1 The movement displacement of the member 110 may be greater than the movement displacement of the rolling member 110 reciprocating along the minor axis length d2.

As described above, the elliptical shape of the subject 1 may be estimated according to the major axis movement displacement values (a, c) or the minor axis movement displacement values (b, d) measured from the rolling member 110 .

Any pair of rolling members 110 formed on the inner rotor 100 may include a conductive material. Here, the pair of rolling member 110 may be formed of a material having conductivity, respectively, but is not limited thereto because the surface of each rolling member 110 may be coated with a conductive material.

In particular, as shown in FIG. 5 , the electrical circuit 300 is electrically connected to a pair of conductive rolling members 110 , but any one of the pair of rolling members 110 provides the polarity of the anode, By providing the polarity of the negative electrode to the other rolling member 110 , the body fluid and tissue of the subject 1 perform the function of a medium for energization, so that the other rolling member 110 from any one rolling member 110 . ), the current flows.

The electric circuit 300 is a means for applying a current to the limbs via the rolling member 110 , and is electrically connected to each of the rolling members 110 . That is, the electric circuit 300 applies a current into the body through the rolling member 110 with the provided electrode.

In this way, it is possible to measure the impedance of the subject by using the current application between the pair of facing the rolling member (110).

Although various methods can be applied to impedance measurement, in particular, bioelectric impedance measurements (BIM) is a representative term for various existing and new non-invasive procedures and technologies using electric current.

When the electric vibration generated from the rolling member 110 having one conductivity is generated, a small amount of current is activated and detected through the rolling member 110 having the other conductivity.

When such currents pass and pass rapidly through physiological parts of the body with various characteristics, a voltage drop occurs. Currents acquire impedances or resistances inherent in body fluids and tissues that pass through cellular spaces, lymphatic systems, and regions of varying characteristics in the bloodstream. This voltage drop provides indirect information about the physical properties of the part through which the current is passed.

For example, when the conductive rolling member 110 is provided as a pair, a current of a certain magnitude (eg, 50 kHz, 800 mA) is applied through the human body between them, and the bio-impedance can be measured.

On the other hand, the rolling member 110 formed of a non-conductive material between each of the rolling members 110 along the orbital circle G1 along the rotation axis of the inner rotor 100 may be further included. At this time, the total number of the rolling member 110 arranged along the orbital circle (G1) may be an even number. Here, the rolling member 110 formed of a non-conductive material may include a non-conductive material or mean that a non-conductive material is coated on the surface.

The rolling member 110 disposed along the orbital circle G1 is alternately made of a conductive material and a non-conductive material, so that each of the conductive material rolling members 110 has a relatively small diameter in the case of a child's limb. This is to prevent current flow in an unintended direction due to energization between adjacent rolling members when measuring a subject made of the limbs.

A plurality of orbital circles G2 and G3 disposed at positions different from the orbital circle G1 in the longitudinal direction of the inner rotor 100 may be disposed. Although three orbital circles G1, G2, and G3 are shown in the accompanying drawings, three or more orbital circles may also be formed along the longitudinal direction of the subject 1 or the longitudinal direction of the inner rotor 100, of course. am. At least two rolling members may be respectively disposed in the plurality of orbital circles G1, G2, and G3, and conductively disposed along each orbital circle G2, G3 similarly to the configuration of the previously-described orbital circle G1 Of course, a rolling member made of a non-conductive material may be disposed between the rolling members of the material.

The plurality of orbital circles G1 , G2 , G3 may be provided with at least one pair of rolling members 110 , and may be positioned at least at three locations along the longitudinal direction of the subject 1 .

As a driving source of the outer rotor 200 , a separate driving motor (not shown) may be included. The drive motor provides an external force capable of rotating the outer rotor 200 , and a user can rotate the outer rotor 200 by directly providing the rotational force by hand, but it is difficult for the user to directly provide the rotational force by hand. In this case, the outer rotor 200 may be rotated by operating the driving motor.

Meanwhile, a plurality of imaging members (not shown) may be provided on the inner circumferential surface of the inner rotor 100 in areas other than those in which the rolling member 110 is disposed. The imaging member may receive external shape information of the subject 1 . Accordingly, the external shape of the subject 1 can be restored to a three-dimensional shape and output.

The apparatus for diagnosing edema according to an embodiment of the present invention can be used at home because a patient can directly mount it on a limb.

To operate this, biometric information (extremity circumference, tissue hardness, bioimpedance) is measured.

When the circumference is measured on at least three orbital circles (G1, G2, G3) of the subject 1, the difference in circumference between the upper extremities or both lower extremities is the average value of the measured values of the three orbital circles (G1, G2, G3) Lymphedema can be suspected if each is greater than 1 cm.

That is, as a diagnostic method, the diagnosis may be performed based on the patient's history and clinical examination. Because changes in volume or tissue are the basics, by measuring the circumference of the limbs, if the difference between the circumferences of the limbs is 1 cm or more, it is diagnosed as mild or more lymphedema.

Non-invasive diagnostic tests such as Lymphoscintigraphy to investigate the regeneration and current functional status of the lymphatic system can be of great help in not only the diagnosis, but also the judgment of treatment results and future prognosis.

In the diagnosis of lymphedema, it is important to exclude congenital vascular malformations, venous diseases, malignant diseases, and systemic diseases, and if necessary, computed tomography, magnetic resonance imaging, ultrasonography, and lymphangiography are performed.

In addition, if the difference in impedance between the two sides in the average of the measured values from the three orbital sources (G1, G2, G3) is 3σ or more, lymphedema may be suspected.

6 is a diagram illustrating a state in which the edema diagnosis apparatus according to an embodiment of the present invention transmits and receives measurement values using wireless communication. can be sent to a medical institution. Here, a separate member 310 for amplifying the microcurrent signal transmitted from the electrical circuit 300 is interposed, and the amplified signal is transmitted between the medical institution and the patient through the wired communication device 320 or the wireless communication device 330 . Measurement information may be transmitted and received.

Medical institutions can diagnose lymphedema prognosis based on the bioinformation data transmitted with the consent of the patient, confirm the prognosis of lymphedema, and determine the treatment method to be followed by follow-up.

In other words, the measured information is transmitted to a mobile device, and the transmitted information is transmitted to a medical institution again, making it possible to diagnose lymphedema.

By measuring the degree of protrusion of each rotatable rolling member 110 in contact with the patient's extremity by the extremity circumference and tissue hardness measurement method, it is assumed that the cross-sectional shape of the extremity is an ellipse, and the approximation of the elliptical circumference shown in [Equation 2] The circumference of the subject 1 can be estimated using the formula.

The edema can be determined by using the displacement of the pair of rolling members 110 to calculate the circumference of the subject using the following [Equation 1] and [Equation 2].

_{Here, as described above, the diameter (l b1)} calculated by [Equation 1] and estimated as d1 using the major axis movement displacement values (a, c), which are the maximum values among the movement displacement values measured from the rolling member 110 . _{) is obtained, and the diameter (l b2} ) estimated as d2 calculated by [Equation 1] using the minor axis movement displacement values (b, d), which is the minimum value among the movement displacement values measured from the rolling member 110, is The elliptical shape of the subject 1 can be estimated by [Equation 2] by obtaining the largest and smallest values of each of l _{b1 and} l _{b2, respectively.}

(Here, l _b1 and l _b2 are the cross-sectional diameters of the subject, l _c is the diameter of the outer rotor, a and c are the respective movement distances of a pair of opposing rolling members, and b and d are the other is the travel distance of each of the pair of opposing rolling members.)

(Here, α is the largest diameter among the measured diameters, β is the smallest diameter among the measured diameters, and P is an approximate solution of the circumference of the subject.)

The rotation of the outer rotor 200 is manually operated by the patient when there is no separate driving source, and information about the entire extremity can be obtained with one rotation.

At this time, the rolling member 110 pushed from the surface of the subject 1 can also measure the hardness of the extremity tissue at the same time through the pressure sensor.

Several measurement positions in the form including the rolling member 110 are arranged at regular intervals on the device to obtain information about each section.

As described above for the bioimpedance measurement method, two rolling members 110 facing each other among the rolling members 110 used to measure the circumference of the subject 1 are coated with a conductive material and used as an electrode for impedance can be measured.

It is measured simultaneously when measuring the circumference of the subject 1, and similarly, each section (for example, a measurement value between any one orbital circle G1 and the other one orbital circle G2, the one orbital circle G1 ) and the measured value between the other orbital circle G3 or the measured value between the other orbital circle G2 and the another orbital circle G3) can be simultaneously obtained.

Based on this information, as a diagnostic criterion for diagnosing lymphedema, if there is a difference of 1 cm or more between the normal and abnormal regions in circumference, it is diagnosed as suspected of lymphedema of mild or higher, and the tissue hardness and bioimpedance through the pressure sensor are normal values. A difference of 3 standard deviations or more can be diagnosed as suspected lymphedema.

The bioimpedance of each part is measured by measuring the electrical resistance according to the flow of the current applied by the electric circuit 300 in the body. The bioimpedance is preferably measured using multiple frequencies, and the bioimpedance can be measured according to a resistance value that is measured differently depending on the frequency and the size.

The body composition can be analyzed according to the impedance measurement value. That is, by analyzing the current flow in the body according to each frequency, the total amount of water, the amount of extracellular fluid, the amount of intracellular fluid, and the amount of fat for each part of the body are analyzed.

The total amount of water in the body may be determined, and the total amount of water in the body may be determined based on the resistance value measured based on the amount of current corresponding to the frequency for determining the amount of water.

Continuous observation and management of lymphedema is of utmost importance. Since a patient outside a medical institution cannot sustain such observation using an objective measurement method, the edema diagnosis device according to an embodiment of the present invention is individually carried or provided by the patient. In addition to periodically transmitting relatively objective patient information to a mobile device, the transmitted information is transmitted to the medical institution again, and by accumulating the patient's measurement data to track the status change after cancer surgery, it is possible to predict lymphedema. becomes Based on this information, medical institutions can follow up and diagnose lymphedema more effectively.

Therefore, according to the apparatus for diagnosing edema according to an embodiment of the present invention, it is possible to simultaneously measure the circumference of a limb and measure the bioimpedance for determining the composition of a body material, as well as to diagnose lymphedema at home or portable.

In addition, for continuous and effective observation of patients, it is possible to transmit information through diagnosis directly to a medical institution by being linked to a mobile terminal.

As mentioned above, although embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art to which the present invention pertains can realize that the present invention can be embodied in other specific forms without changing its technical spirit or essential features. you will be able to understand Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive.

1: Subject
100: inner rotor
110: no cloud
120: elastic member
200: outer rotor
G1, G2, G3: multiple orbital circles

Claims (13)

an inner rotor formed to be surrounded by a predetermined distance from the circumferential surface of the subject having a predetermined length;
at least two rolling members formed along the inner circumferential surface of the inner rotor, comprising a conductive material, and fixed to a circumferential surface of the subject to be in rolling contact;
an elastic member having one side fixed to the inner rotor and the other side elastically supporting each of the rolling members; and
and an outer rotor disposed to surround and spaced apart from the outer circumferential surface of the inner rotor and rotated integrally with the inner rotor,
Displacement of the rolling member reciprocating while being elastically supported by the elastic member is measured, and at the same time, the impedance of the subject is measured by applying a current between the rolling members. According to claim 1,
The cross-sectional shape of the inner rotor is formed to include an orbital circle centered on a central point of the inner rotor, and each of the rolling members is disposed along the orbital circle. 3. The method of claim 2,
Each of the rolling members,
Via the center of rotation of the inner rotor and disposed on an imaginary line connecting the centers of rotation of each of the rolling members, the edema diagnosis device. 4. The method of claim 3,
Each of the elastic members is elastically supported so as to reciprocate on the virtual line formed toward the central point of the inner rotor for each of the respective rolling members. 3. The method of claim 2,
A rolling member comprising a non-conductive material between each of the adjacent rolling members along the orbital circle is further included, edema diagnosis device. 3. The method of claim 2,
At least two rolling members are respectively disposed in a plurality of orbit circles disposed at different positions from the orbit circle along the longitudinal direction of the inner rotor, respectively. 7. The method of claim 6,
Measuring the impedance of the subject by using the current applied between the rolling member of any one conductive material located in the orbit circle and the rolling member of any one conductive material located in the orbit circle other than the orbit circle, edema diagnostic device. 6. The method of claim 5,
The total number of the rolling elements arranged along the orbital circle is an even number. an inner rotor formed to be surrounded by a predetermined distance from the circumferential surface of the subject having a predetermined length;
an outer rotor disposed to surround and spaced apart from an outer circumferential surface of the inner rotor and rotated integrally with the inner rotor;
a plurality of orbital circles centered on a central point of the inner rotor along the rotational axis of the inner rotor;
at least two rolling members disposed on each of the orbital circles, formed along the inner circumferential surface of the inner rotor, comprising a conductive material, and fixed to a circumferential surface of the subject to be in rolling contact; and
Each one side is fixed to the inner rotor, and the other side includes an elastic member for elastically supporting each of the rolling members,
Displacements reciprocating on each imaginary line formed toward the center point of the inner rotor in a state in which each pair of rolling members of the plurality of orbit circles are elastically supported by the respective elastic members are measured, and at the same time, the rolling An edema diagnosis apparatus for measuring the impedance of the subject through the application of current between the members. 10. The method of any one of claims 1 or 9,
Calculate the circumference of the subject by substituting the maximum and minimum values among the values obtained by subtracting the sum of the maximum travel distances of a pair of rolling members disposed on any one virtual line from the diameter of the outer rotor into the approximate formula of the ellipse circumference , edema diagnostic device. 10. The method of any one of claims 1 or 9,
A plurality of imaging members are provided on the inner circumferential surface of the inner rotor other than where the rolling member is disposed, and the external shape information of the subject is input by using the imaging member. 10. The method of claim 9,
Diagnosis of edema, which measures the impedance of the subject by using the current value applied between any one conductive rolling member of any one of the plurality of orbital circles and any one of the conductive rolling members of the other orbital circle Device. The edema diagnosis apparatus of any one of claims 1 or 9, wherein the edema diagnosis apparatus simultaneously measures the circumference and impedance of a subject for diagnosing lymphedema.

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