JPS63229303A - Novel body motion detection type sensor element - Google Patents

Abstract

PURPOSE:To safely and certainly detect the body motion covering wide range displacement by eliminating erroneous detection due to external force, by mounting an electrode to the appropriate place of an extensible conductive sheet changing in its electric resistance by extension and providing a fixing means, which fixes the electrode to an object to be examined, to said electrode. CONSTITUTION:The electrode 2 provided to an extensible conductive sheet 1 consists of a base film 20 composed of a material having bendability and the conductive layer 21 printed thereon and an electrical insulating resin layer 24 made of polyvinyl chloride is laminated to an intermediate electrode part 4 and an electrode terminal part 3 on the side of an element has a conductive resin and is electrically connected to the sheet. The electrode terminal part 5 on a detection side has the metal plate 22 thermally fused to the conductive layer 21. The electrode 2 is adhered to a surgical tape 26 at the area 6 shown by a drawing (the adhered part of the electrode and an object to be examined) by a heat-fusible film 25. As mentioned above, when the intermediate electrode part is freely bendable, the stress from the outside other than body motion is further relaxed by the intermediate electrode part. By this method, the detection of body motion ranging from minute deformation to large deformation can be easily and certainly performed without obstructing the body motion of the object to be examined.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a body motion detection type sensor element. More specifically, the present invention relates to a sensor element that is easy to attach to a subject and safely detects body movements without hindering the subject's movements.

[Conventional technology]

There are cases, mainly in the medical field, where it is necessary to detect body movements that involve small to sometimes large deformations, such as large elongation deformations due to bending of the human body's elbows and knees, and movements of the abdomen due to breathing. However, to date, there are almost no means for detecting body movements, and they have only been used to detect slight movements of the abdomen associated with breathing, although some problems remain. In this case, breathing detection methods include a differential pressure method in which a belt with an airbag is wrapped around the waist and the air flow is detected using a strain gauge or piezoelectric element, and a method in which electrodes are attached directly to the body and a weak high-frequency current is passed through the belt. Examples include impedance measurement methods. The former has the disadvantage that wearing the belt creates a feeling of pressure on the human body and tends to inhibit body movements associated with breathing.

In addition, in the latter impedance measurement method, electrodes are glued to the body surface and a high-frequency current, albeit a weak current, is passed through the human body, so there is a risk of accidentally overcurrent flowing from electrical equipment, and there is a risk of the influence of heartbeat. However, there is a drawback that accurate body movement detection cannot be performed. As described above, the current situation is that no body motion detection sensor has yet been developed that can safely and easily detect body movements that involve small to sometimes large deformations without interfering with body movements. On the other hand, when detecting body movements that involve large displacements of bending parts such as elbows and knees of the human body, there are two methods: using a material whose electrical resistance value decreases when it is stretched and deformed, and a method using a material whose electrical resistance value increases when it is stretched and deformed. It is conceivable to adopt either of the following.

5 However, until now, there is no known material whose electrical resistance value decreases due to elongation deformation. Therefore, by detecting the decrease in electrical resistance value caused by elongation deformation, the object to be inspected, that is, the object to be inspected. Elements capable of detecting the presence or absence of expansion, the amount of expansion, and the frequency of expansion/compression had also not been developed.

Therefore, it is conceivable to detect the elongated deformation using an element that utilizes the property that the electric resistance value increases due to elongated deformation, such as a strain gauge. In other words, when a thin metal wire such as Constance, Advance, or Nichrome is pulled, its electrical resistance increases, so strain gauges are made by utilizing these properties. However, since the elongation rate of this type of metal wire is extremely small (1% or less), the strain gauge described above can only handle minute deformations of the test object; It cannot be used to detect deformation.

On the other hand, piezoelectric elements and elements using pressure-sensitive conductive rubber are known as elements for detecting deformation of a test object.

However, piezoelectric elements detect mechanical strain and deformation as voltage changes, but like strain gauges, they are only suitable for applications involving minute deformations. In addition, the latter pressure-sensitive conductive rubber has an electrical resistance value that decreases when subjected to compressive deformation, but does not cause a decrease in electrical resistance value when subjected to elongated deformation.

As mentioned above, conventionally known elements can only be used for minute extensional deformations or only for compressive deformations. Therefore, in conventionally known elements, elongation,
It is not possible to detect the amount of body movement of a subject that undergoes bending deformation, particularly considerable elongation or bending deformation, and therefore there is no body movement detection type sensor element that can detect such displacement.

[Problem that the invention seeks to solve]

As mentioned above, by using conventionally known elements, the movement of the subject can be measured from minute deformations to large deformations without hindering the movement of the subject.
It is not possible to realize a body motion detection sensor element that can safely and easily detect body motion.

Therefore, the same applicant as the present applicant has proposed a sheet-like material that can be used to electrically detect deformation behavior ranging from minute deformation to considerable deformation behavior.

For example, the first sheet was released on September 27, 1982.
This is a sheet described in Japanese Patent Application No. 59-200577 filed under the name of "Deformed Conductive Polymer Elastomer" in 1999, which is an insulating polymer elastomer with a conductive filler in the form of flakes. This sheet improves conductivity in the stretching direction when stretched in a direction parallel to the filler surface. The second sheet-like material was created in 1985.
A sheet-like material described in Japanese Patent Application No. 60-41024 filed on March 4, 2006 under the name of "Deformed Conductive Knitted Fabric," which consists of intertwined portions of yarns and A deformable conductive knitted fabric whose electrical resistance value changes when stretched in any direction because the electrical conductivity or electrical insulation between the intertwined parts is formed to satisfy the following conditions. .

■ Among all intertwined parts in a given area of knitted fabric,
The number of intertwined parts that are electrically insulated! , and when the number of electrically conductive intertwined parts is 12, the ratio 1+/lzO value is Ippei.

The measured value per square inch is 1/9 or more;■ An intertwined part that is electrically insulated between a plurality of adjacent intertwined parts in a constant length in the longitudinal direction of each yarn constituting the knitted fabric. The number of m.

Where m2 is the number of intertwined parts that are electrically conductive, the value of the ratio m 1 / mz shall be 1/9 or more as measured value per inch.

If electrodes are attached to any two points on a sheet-like object as described above and the sheet-like object is stretched between the electrodes, the electrical resistance between the electrodes of the sheet-like object will decrease, so it is possible to determine whether the electrical resistance decreases and the extent of the decrease. By measuring between two electrodes, it is possible to determine whether or not the specimen is elongated and the degree of elongation. In addition, since these sheet-like materials, especially the latter deformable conductive knitted materials, can undergo a considerable amount of elongation deformation, the elongation-bending behavior of the specimen that undergoes minute to considerable deformation, that is, the presence or absence of elongation-bending, can be investigated. , the amount of extension and bending, the frequency of compression accompanied by extension and bending, etc. can be detected.

In the following description, the sheet-like material is referred to as an elongated conductive sheet, and an element in which electrodes are attached to the elongated conductive sheet is referred to as an elongated conductive element.

However, the elongated conductive element configured in this way is
When attached to a subject and used, there are the following problems. That is, when connecting the detection circuit terminal to the electrode of the elongated conductive element attached to the subject, an external force other than body movement may be applied to the elongated conductive sheet, resulting in erroneous detection. The present invention solves the problems of attaching the elongated conductive element previously proposed by the applicant of the present invention to a subject to detect body movements, and makes it easy to attach the elongated conductive element to the subject. An object of the present invention is to provide a body movement detection sensor element that can safely and reliably detect body movements ranging from minute displacements to large displacements without hindering the movement of a subject.

[Means for solving problems]

An object of the present invention is to provide an elongated conductive element in which electrodes are attached to appropriate locations on an elongated conductive sheet whose electrical resistance value changes with elongation, and at least a portion of the electrode is provided with means for fixing it to a subject. This is achieved using a body motion detection sensor element.

The present inventors applied the above-mentioned stretched conductive sheet, which has unprecedented characteristics, as a body movement detection type sensor element, and as a result, they were able to detect body movement with high sensitivity. It was found that noise was generated when external stress other than body movement was directly transmitted to the stretched conductive sheet through the lead wire. As a result of intensive studies to solve this problem, the present invention was achieved.

That is, the first feature of the present invention is that the electrode has means for adhering to the subject.

In terms of function, the electrode referred to here is generally divided into three constituent parts. That is, an electrode end portion located at one end of the electrode and having means electrically connectable to the elongated conductive sheet (hereinafter referred to as the element side electrode end portion), and a detection circuit located at the other end of the electrode. An electrode end portion (hereinafter abbreviated as the detection side electrode end portion) having means that can be electrically connected to a terminal of the device, an element side electrode end portion and a detection side electrode end portion located between the two ends. It consists of an electrode part (hereinafter referred to as an intermediate electrode part) that electrically connects the electrode parts, but these parts are divided in terms of function, and in terms of length, the boundaries between each part may be unclear. For example, there is a case where there is no intermediate electrode part and the distinction between the element side electrode end part and the detection side electrode end part is unclear. (See FIG. 7, which will be described later.) Next, the adhesion means that the electrode has means means for physically adhering the entire or part of the electrode to the subject, directly or indirectly. Here, the means for directly adhering refers to means for directly adhering the electrode to the subject using an insulating adhesive or the like. In addition, indirect adhesion means is a means of indirectly fixing the electrode to the subject by bonding the electrode to a fixing means (for example, surgical tape, etc.) for fixing the elongated conductive element to the subject. means. Furthermore, the entire electrode that is bonded to the subject means that the entire surface of the electrode facing the subject side is bonded to the subject. In addition, the part of the electrode that adheres to the subject means that a part of the surface of the electrode facing the subject side adheres to the subject, and in this case, the part to which the electrode is fixed is the aforementioned element. It may belong to any of the side electrode end, the detection side electrode end, or the intermediate electrode, or it may be fixed to the subject across two or more constituent parts.

As a specific example of these adhesive means, when the electrode is directly adhered to the subject, it may be possible to apply an adhesive to the electrode. In addition, when the electrode is indirectly attached to the subject, adhesive films, adhesives, magnets, snap buttons, suction cups, etc., or combinations thereof can be used to bond the electrode and the above-mentioned fixing means. However, an adhesive or the like may be used to bond the fixing means and the subject. However, it must have sufficient adhesion strength to allow the subject to absorb stress other than body movements applied directly or indirectly from the lead wire side, and must not cause harm to the subject such as pain or inflammation. The material is not limited to these, as long as it does not interfere with body movement.

Next, the adhesive means will be explained in more detail with reference to the drawings.

FIG. 1 is an example in which electrodes are indirectly adhered to a subject.

In the figure, ■ is an elongated conductive sheet, 2 is an electrode, 3 is an element side electrode end, 4 is an intermediate electrode part, 5 is a detection side electrode end, and 6 is an adhesive part between the electrode and the subject.

The electrode in FIG. 1 consists of a base film 20 made of a flexible material and a conductive IJ 21 printed on it.
A polyvinyl chloride-based electrically insulating resin layer (for example, a polyvinyl chloride layer) 24 is laminated on the intermediate electrode portion 4, and the element side electrode end portion 3, which is one end of the electrode, has a conductive resin layer 23. It is electrically connected to the elongated conductive sheet 1. Also,
The detection side electrode end 5, which is the other end, has a metal plate 22 that is thermally bonded to a conductive layer (the thermal bonding layer is omitted from the figure).

The electrode 2 is connected by a heat-sealing film 25 at a position 6.
It is adhered to surgical tape 26.

It is more preferable that the intermediate electrode section is freely bendable in this way, since external stress other than body movement is further alleviated at the intermediate electrode section.

FIG. 2 shows an example in which the electrodes are directly adhered to the subject.

In the electrode shown in FIG. 2, the intermediate electrode part 4 and the detection side electrode end part 5 have the same structure as in FIG.
A conductive layer 27 is printed on one side and an adhesive 29 is laminated on the other side, and a heat-sealing film 2 is attached to the stretched conductive sheet 1.
5, with the conductive resin layer 23 interposed therebetween.
The stretched conductive sheet 1 and the conductive layer 27 are electrically connected. Then, the electrode is adhered to the subject using the adhesive 29 at the end of the electrode on the element side. Note that since the adhesive 29 not only adheres the electrode to the subject but also fixes the elongated conductive sheet, no other fixing means such as surgical tape is required, and the sensor element can be made compact.

Examples of the body motion detection type sensor element of the present invention are shown in FIGS. 3 to 8 below.

FIG. 3 shows an example in which the entire surface of the electrode has means for indirectly adhering to the subject. That is, the entire surface of the electrode facing the subject is adhered to surgical tape 33, which is a means for fixing the elongated conductive sheet to the subject, by means of a thermal adhesive film 37.

4 to 6 show examples in which part of the electrode has means for indirectly adhering to the subject. FIG. 4 shows an example of bonding the element-side electrode end, FIG. 5 the detection-side electrode end, and FIG. 6 an example of bonding the intermediate electrode.
Alternatively, it is adhered to the surgical tapes 43 , 53 , 63 by Cu mefuki taffeta 40 .

In the electrode shown in FIG. 7, the distinction between the element side electrode end and the detection side electrode end is unclear, there is no intermediate electrode part, and the conductive resin 7
5 and Cu-plated taffeta 70,
It is adhered to surgical tape 74 with a thermal adhesive film 73. That is, this is an example in which the entire electrode has means for indirectly adhering to the subject.

FIG. 8 is an example in which a part of the electrode is directly adhered to the subject. That is, the electrode is directly adhered to the subject using the adhesive 80j that the element-side electrode end portion 3 has.

In the figure, 31, 41, 51, 61, 7
1, 81 is the action elongation setting sheet; 32, 42
, 52 , 62 , 72 , 82 are insulating paper; 33
, 43 , 53 , 63 , 73 are surgical tapes, 34 , 44 , 54 , 64 , 74 are release paper, 35 , 45 .

55, 65, 75, 85 are conductive resin; 36
, 46.56, 66°86 are flexible printed circuits; 37, 57, 67 are heat-adhesive films;
38, 58 are conductive rubber sheets; 39, 59 are plastic magnet sheets; 30° 40, 50
, 70 are Cu-plated taffeta; 40', 60'.

80' is Cut7i; 80h is a conductive resin layer; 801
80j represents a polyester film; 80j represents an adhesive.

As described above, when a body movement detection type sensor element consisting of an electrode having adhesive means to the subject is attached to the subject and body movement is measured, the body movement is transmitted through the lead wire coming out from the detection circuit terminal. External stress other than body movement is absorbed by the subject at the bond between the electrode and the subject, and the accuracy of detecting body movement is significantly improved.

Hereinafter, the electrodes used in the present invention will be explained in more detail.

First, the end portion of the element-side electrode will be described.

Means that can be electrically connected to the elongated conductive sheet of the element-side electrode end 3 include a method that is fixed to the elongated conductive sheet (hereinafter referred to as the fixed method) and a method that is detachable (hereinafter referred to as the detachable method). There is.

The end of the electrode on the element side of the fixing method is made of metal eyelets made of brass or copper, snap buttons, crimping with rivet crimp terminals, adhesion with a conductive resin layer, sewing with metal wire, etc. to extend the electrode to a conductive sheet. The device is attached to the device to realize electrical continuity, but is not limited to this as long as it can be fixed. The conductive resin layer mentioned here refers to commonly used eboshiki, acrylic, or
Base materials include plastic adhesives such as ester-based adhesives, urethane-based adhesives, latex-based adhesives, or hot-melt polymers such as polyester-based and polyamide-based resins, and are usually in the range of 5 to 50% by volume. This is a layer made of conductive resin mixed with an appropriate amount of conductive filler. The conductive filler herein is made of metals such as nickel, copper, iron, aluminum, gold, silver, alloys thereof, or conductive carbon, and is in the form of powder or short fibers. In particular, if the base material resin exhibits rubber-like elasticity, it will flexibly follow the deformation of the stretched conductive sheet without cracking, preventing poor electrical contact, or causing a foreign body sensation or discomfort to the human body. Very preferable.

In addition, as the element-side electrode end 3 of the detachable type, there are those that utilize the magnetic force of stone and stone, clamping with a spring such as an alligator clip, pressure difference, adhesive force of adhesive, and entanglement of fibers such as a woven fastener. .

Next, the means which can be connected to the detection circuit device that the detection side electrode end has has a shape that matches the style of the terminal of the detection circuit device. That is, when the terminals of the detection circuit are of a clamping type such as an alligator clip, it is preferable that a metal plate such as a copper plate or a brass plate is connected to the above-mentioned intermediate electrode portion by means such as soldering. In addition, all the methods described in the above-mentioned method for attaching and detaching the element-side electrode portion are applicable. Also, a connector commonly used for connecting electric wires may be used.

Next, since the intermediate electrode part electrically connects the end part of the element-side electrode and the end part of the detection-side electrode, the shape, size, etc. are not particularly limited as long as the material is conductive.

The conductivity required for the intermediate electrode section is the conductivity that sufficiently transmits information on the resistance change of the stretched conductive sheet to the detection circuit device, and the conductivity between the end of the element side electrode and the end of the detection side electrode is sufficient. The electrical resistance value must be 105Ω or less, and 103Ω
It is preferably at most 10Ω, more preferably at most 10Ω.

Next, the elongated conductive sheet referred to in the present invention is what was previously described in [Problems to be Solved by the Invention], and the elongated conductive sheet is partially or completely covered with an insulating reinforcing material having extensibility. It may be constructed by being buried or bonded. If the elongated conductive sheet reinforced in this manner is used as a sensor element, the reduction in conductive performance and physical damage after repeated elongation can be significantly improved.

In addition, the electrode that detects the electrical resistance value of the stretched conductive sheet is
It is sufficient if they are provided at intervals, and the interval, position,
The number, shape, etc. may be appropriately selected depending on the purpose and method of use.

In addition, in order to set the range in which the resistance value of the elongated conductive element changes, it has an action elongation setting mechanism filed by the present applicant under the name of "action elongation setting type elongated conductive element."It's okay. It may also be an elongated conductive element in which at least one side is insulated, which has been filed by the present applicant under the name of "extended conductive element insulated from specimen."

Hereinafter, a more detailed explanation will be given using examples, but it is clear that the body motion detection type sensor element of the present invention is not limited to these examples or what is shown in the previous drawings.

〔Example〕

Taffeta made of polyester fiber yarn manufactured by Asahi Kasei Corporation (warp 5Qd/24f, weft 75d/36f")
) in sodium hydroxide aqueous solution (80g/j2), 100
Weight loss processing at ℃ (weight loss rate 20%), 5nCj! z: Sensitized in a bath with hydrochloric acid in a weight ratio of 3:10, washed with water and dehydrated,
PdC1i: Activated in a bath with hydrochloric acid at a weight ratio of 1:15, washed with water and dehydrated to produce NiC1z' 6HzO1NaHPO
z, sodium citrate, NH4C4, and aqueous ammonia in a bath with a weight ratio of 1:1:3:2:2 at 90°C for 2 minutes.
In this way, Ni-plated ester taffeta was produced. This is 1
A pear sample with a size of 0 cm x 10 cm + a was placed in a double cylindrical laminar flow generator (inner cylinder rotates at high speed, outer cylinder inner diameter 25 aa, inner cylinder outer diameter 10 cm) together with water,
A stretched conductive fabric was obtained by processing for 300 minutes at an inner cylinder rotation speed of 200 rpm.

Next, commercially available urethane elastomer resin (solvent DMF,
100'eX3min after coating release paper with 90μm and 300μm gauges (solid content 10wt/%)
After drying and in a half-dry state, thermal adhesive transfer was carried out on both sides of this sheet-like elongated conductive sheet at 110° C. under a pressure of 4 kg/aa, and dried at 100° C. for 30 minutes to obtain an elongated conductive sheet.

Next, the stretched conductive sheet was cut in the bias direction to 1 cm width x 5 cm length, and 1 cm length from both ends was sandwiched between copper plates and stretched by 20%.The electrical resistance value was measured. The resistance value changed from 4.5×10'Ω to 60Ω.

Next, carbon-based conductive resin is applied to the lcra from both ends of the stretched conductive sheet, and a commercially available flexible printed circuit (polyester base film 35 μm thick, Ag-based conductive element, surface heat-sealable polymer lamination) is attached to the lam width x 6 cIl length. I glued the cut pieces together. Furthermore, a folded piece of Cu-plated taffeta with a width of lam and a length of 2 cm is glued to the other end of the flexible printed circuit, and on top of that, two conductive rubber sheets are placed with conductive adhesive, and a thinner plastic magnet sheet is placed between them. Glue and dry.

Two sheets of insulating paper (overlapping parts sprayed with silicone resin) were glued to this to prevent electrical leakage. Next, the surgical tape was adhered with heat adhesive tape. Furthermore, two sheets of paraffin paper bonded with an adhesive were placed over the ends of the two element-side electrodes, and the length of the stretched conductive sheet was adjusted so that the resistance value of the stretched conductive sheet could be set just before lXl0'Ω. A temperature setting sheet was adhered to produce a body motion detection type sensor element of the present invention, sample sensor 1, shown in FIG. In addition, sample 11h
As lead wires with terminals for 1 and 3 (to be described later), the above-mentioned flexible printed circuit was pressed and glued to a width of 1C11, and a Cu plate was attached to the heat-sealing tape side 1 cm from one end, and a plastic magnet was attached to the other side. I made something.

Next, both ends 1al of the elongated 4-conductor sheet were heat-sealed to one end of the 3cI11-long Cu-plated taffeta, and carbon-based conductive resin was applied across the elongated conductive sheet and the Cu-plated taffeta, and dried at 60°C for 10 minutes. Ta. On the other hand, a Cu plate was heat-sealed to one end of the flexible printed circuit, and the other end was heat-sealed to the Cu-plated taffeta. Furthermore, surgical tape was adhered to the Cu-plated taffeta by heat fusion. In addition, the insulating paper used in Sample Case 1 and the sheet for setting the action elongation were adhered to produce Sample Floor 2 of the present invention shown in FIG. 4.

Next, as shown in Figure 5, lengthen the insulating paper and apply surgical tape to the end using its own adhesive strength, and then
The lower part of the detection-side electrode end 5 was adhered to surgical tape with a heat-sealing film to produce a sample 11h3 of the present invention.

Next, as shown in FIG. 6, a Cu plate was heat-sealed to one end of the flexible printed circuit, and a part of the intermediate electrode portion 4 was also bonded to surgical tape with a heat-seal film. was created.

Next, as shown in Figure 7, from both ends of the stretched conductive sheet,
cm, a 3 cna length of Cu plated taffeta was bonded with a heat-sealing film, a carbon-based conductive resin was applied across the stretched conductive sheet and the Cu plated taffeta, and 1 cm was heated at 60°C.
Dry for 0 minutes. Furthermore, surgical tape and an insulating paper action elongation setting sheet were pasted together, and sample IIk of the present invention was prepared.
L5 was produced. In addition, as a lead wire with a terminal for sample 5, a ring shown at 78 in FIG. 7 was attached to the constriction of a commercially available electrocardiogram suction cup electrode, and one end of the lead wire was soldered to this ring. .

Next, a polyester film with a carbon-based conductive layer printed on one side and an adhesive laminated on the other side (electrode material ■) is cut into 1 cm width x 3c+++ length, and this is used as a stretched conductive sheet. Both ends were adhered to Jll with a heat-sealing film.Furthermore, a carbon-based conductive resin was applied across the stretched conductive sheet and the electrode material.Furthermore, a Cu plate was heat-sealed to one end of the flexible printed circuit described above. Sample 11 of the present invention was prepared by heat-sealing the other end of the attached material to the electrode material L, and laminating insulating paper and a sheet for setting the action elongation.
h6 was produced.

These body motion detection sensor element samples 1 to 6 are attached to the abdomen of the subject and connected to a known resistance/voltage conversion circuit.
As a result of observing the waveforms with a storage scope, we were able to detect body movements associated with breathing, ranging from minute deformations to large deformations, without interfering with the subject's free movement. Moreover, it is easy and safe to install, and even if the lead wire of the conversion circuit is accidentally touched, no noise is generated, and highly accurate rhythm detection can be achieved without picking up noise due to external stress other than body movement.

For Samples 5 and 6, a comparative example was fabricated with the same material and structure as 5 and 6 without bonding the electrodes and surgical tape, and was attached to the subject to measure body movements. Detection was performed, but when the connected lead wire was touched, noise was introduced and the detection accuracy decreased.

〔Effect of the invention〕

Since the body motion detection sensor element according to the present invention is configured as described above, it is possible to detect body motions ranging from minute deformations to large deformations, which cannot be performed using conventionally known sensor elements. This can be done safely, easily, and reliably without interfering with the process. As a result, the sensor element of the present invention can be used as an NMR-CT sensor for detecting the respiration cycle.
, Respiratory gated sensor for CT such as X-ray CT, and pulmonary function testing device [Respiratory management for neonatal apnea, especially premature infants, or recording respiratory waveforms to calculate vital capacity, flow velocity (calculated from the slope of the waveform) It can be used as a medical sensor for applications such as testing peripheral lung function) and testing lung function. In addition, it can be used as a pedometer to detect the number of steps taken by attaching it to your elbow or knee, and it also detects the level of the number of times you use various training devices (involving bending and stretching) and the degree of flexion used to strengthen your muscles and improve your shape. It can be used as a sensor for sports training, or as a finger switch that can be attached to the fingers of a glove to directly respond to finger movements. Furthermore, it has a wide range of applications, such as being used in rehabilitation equipment that detects the degree of elongation and flexion for the purpose of restoring the functions of joints and other parts of the human body.

[Brief explanation of drawings]

FIG. 1.2 shows a cross-sectional view of an example of an electrode having means for adhering to a subject according to the invention. Moreover, FIGS. 3 to 8 show schematic diagrams of the body motion detection type sensor element of the present invention. DESCRIPTION OF SYMBOLS 1... Elongated conductive sheet, 2... Electrode, 3... Element side electrode end, 4... Intermediate electrode part, 5... Detection side electrode end, 31, 41, 51, 61, 71, 81...
Action elongation setting sheets 32, 42, 52, 62, 72, 82...
Insulating paper, 33, 43, 53, 63, 73...
Surgical tape, 34, 44, 54, 64,
74...Release paper, 35, 45, 55, 65,
75, 85... conductive resin, 36, 46, 56
, 66 , 86...Flexible printed circuit, 37, 57, 67... Heat fusion film, 38,
58... Conductive rubber sheet, 39, 59... Plastic magnet sheet, 30, 40, 50,
70...Cu plated taffeta, 40', 60',
80'...Cu plate, 80h...conductive resin layer, 80i...polyester film, 80j...adhesive.

Claims (1)

[Scope of Claims] 1. An elongated conductive element comprising electrodes attached to appropriate locations on an elongated conductive sheet whose electrical resistance value changes with elongation, and at least a portion of the electrode being provided with means for fixing the subject to the subject. body motion detection sensor element. 2. The body motion detection type sensor element according to claim 1, wherein the fixing means is provided over the entire electrode. 3. The body motion detection type sensor element according to claim 1, wherein the fixing means is provided at the element side end of the electrode. 4. Claim 1, wherein the fixing means is provided at the end of the electrode on the side to be connected to the detection circuit device.
The body motion detection type sensor element described in . 5. The body motion detection type according to claim 1, wherein the fixing means is provided at an intermediate portion between an end of the electrode on the element side and an end on the side to be connected to the detection circuit device. sensor element.