WO2006109521A1 - 血圧測定装置 - Google Patents
血圧測定装置 Download PDFInfo
- Publication number
- WO2006109521A1 WO2006109521A1 PCT/JP2006/305953 JP2006305953W WO2006109521A1 WO 2006109521 A1 WO2006109521 A1 WO 2006109521A1 JP 2006305953 W JP2006305953 W JP 2006305953W WO 2006109521 A1 WO2006109521 A1 WO 2006109521A1
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- WO
- WIPO (PCT)
- Prior art keywords
- cuff
- blood pressure
- inner cuff
- pressure measurement
- holding
- Prior art date
Links
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/683—Means for maintaining contact with the body
- A61B5/6838—Clamps or clips
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/021—Measuring pressure in heart or blood vessels
- A61B5/022—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers
- A61B5/02225—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers using the oscillometric method
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/021—Measuring pressure in heart or blood vessels
- A61B5/022—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers
- A61B5/02233—Occluders specially adapted therefor
- A61B5/02241—Occluders specially adapted therefor of small dimensions, e.g. adapted to fingers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/6813—Specially adapted to be attached to a specific body part
- A61B5/6814—Head
- A61B5/6815—Ear
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
- A61B2562/02—Details of sensors specially adapted for in-vivo measurements
- A61B2562/0233—Special features of optical sensors or probes classified in A61B5/00
Definitions
- the present invention relates to a blood pressure measurement device, and more particularly to a technique in which an outer ear and its peripheral part are measured parts.
- the blood pressure is measured by wrapping a cuff around the upper arm of the person being measured. In this case, it is necessary to wear on the body a large-size cuff that covers the upper arm and the main body of the blood pressure measurement device connected to the cuff.
- the subject wears a cuff on the upper arm and wears a body of the blood pressure measurement device connected to the cuff on the body. It is necessary to live daily life in a state, but this is a major obstacle to daily life. In addition, the subject may be burdened by the pain of the upper arm being pressed each time pressure is measured.
- Patent Document 1 there is a method of measuring a pulse wave by attaching a cuff to the earlobe and pressing the earlobe (Patent Document 1).
- the cuff and the main body can be made smaller than the sphygmomanometer that measures the blood pressure by wearing the cuff on the upper arm, and the burden on the subject can be reduced.
- Patent Document 1 Japanese Patent Laid-Open No. 2005-6906
- blood pressure which is relatively close to the upper arm, can be stably measured by attaching a cuff to a tragus with a larger blood vessel than the earlobe and measuring blood pressure or the like.
- the earlobe is soft and relatively large and exposed, and the cuff is easy to wear.
- the tragus is relatively hard and varies greatly from person to person, the cuff for wearing an ear tab disclosed in Patent Document 1 is used.
- This structure cannot be used for tragus as it is. That is, even if the structure of the mounting portion disclosed in Patent Document 1 is used, it is difficult to stably output the blood pressure measurement result in the tragus. Also, if you try to wear it forcibly, there is a risk of increasing the degree of invasiveness to the subject!
- the present invention has been made in view of such circumstances, and provides a blood pressure measurement device having a cuff attachment structure capable of measuring blood pressure while stably suppressing the degree of invasiveness in the tragus. To do.
- a blood pressure measurement device includes an inner cuff inserted into an ear hole, an outer cuff positioned outside the tragus, the inner cuff, and the outer cuff.
- a pressure increasing / decreasing unit that pressurizes and depressurizes the inner cuff and the outer cuff with a fluid, and a connection between the inner cuff and the outer cuff and the pressure increasing / decreasing unit for feeding the fluid.
- One end of the holding means is open In the holding means, the end portions where the inner cuff and the outer cuff are disposed are substantially parallel to each other, the inner cuff and the outer cuff are opposed to each other, and the holding means has a measurement subject's subject.
- Auxiliary members are attached to a predetermined position of the ear and for enhancing the mounting stability of the inner cuff and the outer cuff on the tragus.
- the auxiliary member protrudes from the holding means and has a length protruding from the holding means. Is adjustable by a protrusion length adjusting mechanism.
- the ear hook part is provided.
- the ear hook and the holding means are independent members except that they are integrated with each other via the pipe.
- the ear hook has at least a shape portion for suppressing the opposite ring of the subject's ear.
- the pipe is attached with a stagger member for regulating the length pulled in a predetermined direction.
- a plurality of the pipe holding parts are provided in the ear hooking part, and the stagger member is attached to a position of the pipe holding part closest to the holding means.
- the holding means includes a first holding member that holds the outer cuff and a second holding member that holds the inner cuff, and the first holding member is the second holding member. And the first holding member and the inner cuff are arranged in the holding means when the first holding member is in a steady position without rotating.
- the end portions of the second holding member are substantially parallel to each other, and the inner cuff and the outer force cuff face each other.
- the blood pressure apparatus includes a clamping width adjusting mechanism for adjusting a clamping width between the outer cuff and the inner cuff.
- At least one of the outer cuff and the inner cuff is attached to the holding means by a swing mechanism.
- the side surfaces of the outer cuff and the inner cuff other than the contact surface that directly contacts the tragus are configured in a bellows shape, and the number of bellows of the outer cuff and the inner cuff is the same. Has been.
- the outer cuff and the inner cuff have different cross-sectional shapes.
- the cross-sectional shape of the outer cuff is substantially circular
- the cross-sectional shape of the inner cuff is substantially elliptical or oval.
- an inner cuff inserted into the ear hole, an outer cuff positioned outside the tragus, holding means for holding the inner cuff and the outer cuff, and the inner cuff or the outer cuff.
- a pulse wave detection means that detects a pulse wave signal generated by blood force light flowing through a blood vessel, and is inserted into at least one of the inner cuff and the outer cuff, and then the inner cuff and the outer cuff.
- Pressurizing and depressurizing means for pressurizing and depressurizing with a fluid; piping connected between the inner and outer cuffs and the pressurizing and depressurizing means for sending the fluid; and the inner cuff connected to the piping; A pressure detection means for detecting the pressure of the outer cuff; and a blood pressure measurement control means for measuring a blood pressure value from the pulse wave signal, the inner cuff and the outer cuff being opposed to each other and receiving the light
- This cuff is provided with a light shielding layer to prevent ambient light.
- a pulse wave detection means that detects a pulse wave signal generated by blood force light flowing through a blood vessel and is held in at least one side, and after holding the tragus between the inner cuff and the outer cuff, the inner cuff and the outer cuff.
- Pressurizing and depressurizing means for pressurizing and depressurizing with a fluid; piping connected between the inner and outer cuffs and the pressurizing and depressurizing means for sending the fluid; and the inner cuff connected to the piping; A pressure detecting means for detecting the pressure of the outer cuff, and a blood pressure measurement control means for measuring a blood pressure value from the pulse wave signal, wherein the inner cuff and the outer cuff are opposed to each other, and the inner cuff and the outer cuff are opposed to each other.
- Cuff lid Make the thickness of the part larger than the thickness of the tube part.
- the stability of cuff attachment can be improved.
- the cuff can be evenly contacted with the inner and outer surfaces of the tragus in a flat state, and the cuff performs accurate blood pressure measurement while maintaining a position sufficiently corresponding to individual differences in the shape of the tragus. be able to.
- FIG. 1 is a diagram showing the structure of an ear.
- FIG. 2 is a diagram showing an external configuration of a blood pressure measurement device according to the present invention.
- FIG. 3 is an external perspective view showing a state in which the blood pressure measurement device according to the present invention is in use for the auricle.
- FIG. 4 is a diagram for explaining the shape of the ear hook 51.
- FIG. 5 is a view showing a basic configuration (A in FIG. 5) and a swinging state (B in FIG. 5) of the mounting portion 3.
- FIG. 6 is a view showing a state in which the outer cuff is opened (A in FIG. 6) and a state in which the outer cuff is slid (B in FIG. 6) in the mounting portion 3.
- FIG. 7 is a view for explaining the structure of a cuff assembly.
- FIG. 8 is a diagram for explaining a swinging structure of an outer cuff.
- FIG. 9 is a diagram for explaining a swinging structure of an inner cuff.
- FIG. 10 is a diagram showing a case where a swing structure is realized with a ball bearing.
- FIG. 11A is a plan view of the cuff bag body 22
- B is a front view of the cuff bag body
- C is a bottom view of the cuff bag body.
- FIG. 12 is a cross-sectional view taken along line XX in FIG.
- FIG. 13A is a plan view of the cuff bag body 23
- B is a front view of the cuff bag body
- C is a right side view of the cuff bag body
- D is a bottom view of the cuff bag body.
- FIG. 14A is a cross-sectional view taken along the line X-X of FIG. 13A
- B is a cross-sectional view taken along the line Y-Y of FIG.
- FIG. 15 is a printing process diagram for forming a light shielding layer inside the cuff bag body 22, and is a printing process diagram shown with a central sectional view of the cuff bag body 22.
- FIG. 16 is a cross-sectional view of an essential part of a force assembly provided with a degree of freedom at an end of a brushing bush of a direction moving member.
- FIG. 17 is an external perspective view showing a state where wiring and piping are integrated.
- FIG. 18 is a diagram showing a structure of a coupling part 300.
- FIG. 19 is a diagram for explaining a state of attachment of the coupling portion 300.
- 20 is a block diagram illustrating a configuration example of the blood pressure measurement device in FIG. 1.
- FIG. 21 is an entity layout diagram of the apparatus main body 2 of FIG.
- FIG. 22A is a flowchart for explaining the operation of the blood pressure measurement device.
- FIG. 22B is a flowchart for explaining the operation of the blood pressure measurement device.
- FIG. 23 is a waveform diagram of blood pressure measurement.
- FIG. 24 is a block diagram illustrating a configuration example of a blood pressure measurement device according to another embodiment.
- FIG. 25 is a waveform diagram showing a blood pressure measurement result by simultaneous measurement of inner and outer cuffs.
- the tragus is used as a measurement site as an appropriate place for the auricle.
- the structure of the pinna will be clarified.
- FIG. 1 is a diagram showing names of respective parts of the auricle (ear).
- auricle 220 shown in Fig. 1 221 ⁇ or rosary, 222 ⁇ or pearl, 223 ⁇ or concha, 224 or mat, 225 or mat, 226 or leg, 227 or concha, 230 Is the ear hole.
- a pair of mounting portions (described later, which also has the same force as the inner cuff assembly 6 and the outer cuff assembly 7) are mounted so as to sandwich the tragus 221.
- FIG. 2 is a diagram showing an overall appearance of the blood pressure measurement device according to the present embodiment.
- the blood pressure measuring device generally includes a main body 2 that executes blood pressure measurement calculation, a mounting portion 3 that is mounted on the tragus 221 of the subject's pinna, and an ear hooking portion that stabilizes the mounting of the mounting portion 3. 51, and a coupling part 300 for coupling the main body 2, the pipe 4, and the wiring 5 to each other. Since each configuration will be described later, only a brief description will be given here.
- the mounting portion 3 includes a holding member 10, an inner cuff assembly 6 and an outer cuff assembly 7 attached thereto, and a clamping width adjusting screw 11 for adjusting a clamping width of the inner cuff and the outer cuff.
- a mounting stabilizing member 80 is
- the ear hook 51 has the same shape as the ear hook of the eyeglass frame, for example.
- a plurality of pipe holding parts 52a and a shape part 51b for passing the pipe 4 and the wiring 5 covered with the covering member 9 are provided.
- An ear hook stabilizing member 51c is provided at the tip of the shape portion 51b.
- the coupling unit 300 is for coupling the pipe 4 and the wiring 5 to the main body 2, and is configured to be detachable. Insert the coupling part 300 into the main body 2 until the locking part 322 of the coupling part 300 is locked into the locking hole 320 of the main body 2. Then, the female connector 305 of the coupling part 300 is fitted into the male connector 318 of the main body 2, and the pipe plug 304 of the coupling part 300 is fitted into the pipe plug hole 319 of the main body 2. Then, by depressing the attaching / detaching button 303 to release the locking portion 322 from the locking hole 320 and pulling the coupling portion 300 out of the main body 2, the coupling portion 300 can be detached from the main body 2.
- the pipe 4 and the wiring 5 are covered with the covering member 9, and the covered pipes 4 and 5 are passed through the pipe holding part 51 a of the ear hook part 51.
- the length by which the pipe 4 and the wiring 5 are pulled toward the main body 2 side is regulated by the stopper member 81.
- the stopper member 81 On the other hand, in the present embodiment, there is no restriction on the length that can be pulled toward the mounting portion 3 side.
- the length of the pipe 4 from the ear hook 51 to the mounting part 3 may be regulated by providing a stagger member on both sides of the last pipe holder 51a provided in the ear hook 51.
- the pipe 4 is separated into two forks near the mounting portion, and one is connected to the inner cuff assembly 6 together with the wiring 5 and the other is connected to the outer cuff assembly 7.
- FIG. 3 is a diagram showing a state when the mounting part 3 of the blood pressure measurement device according to the present embodiment is mounted on the tragus 221.
- An inner cuff assembly 6 and an outer cuff assembly 3 are attached to the upper and lower ends of the “U” -shaped holding member 10, respectively. Therefore, the inner cuff assembly 6 and the outer cuff assembly 7 are arranged to face each other. Then, the width between the inner cuff assembly 6 and the outer cuff assembly 7 can be adjusted by the clamping width adjusting screw 11, so when attaching the attachment part 3 to the tragus 221 the width of both cuffs is set. Slightly wider than the thickness of the tragus 221 and squeeze the inner cuff assembly 6 into the concha cavity 227, and tighten the clamping width adjustment screw 11 to secure the mounting part 3 to the tragus 221. To.
- the mounting portion 3 is provided with a mounting stabilizing member 80.
- the distal end portion of the mounting stabilization member 80 has, for example, a spherical shape, and the stability is improved when the mounting portion 3 is mounted on the tragus 221 with the distal end portion contacting the opposite wheel.
- This mounting stabilizing member 80 has a thread, and the length of the protrusion can be adjusted by screwing it into the screw hole (not shown) of the holding member 10, so that it corresponds to individual differences for each subject. And the mounting part 3 can be mounted more stably.
- the ear hook 51 is attached to the ear as shown in FIG.
- the shape 51b extends from the opposite leg 226 of FIG.
- the tip 51c of the shape 51b is the opposite wheel 224, and is arranged in the vicinity of the attachment stabilizing member 80 of the attachment 3 being arranged.
- the pipe 4 and the wiring 5 covered with the covering member 9 are held by the pipe holding part 51a, pass through the back of the ear, and are connected to the main body 2.
- blood pressure measurement can be performed comfortably without being bothered by the piping 4 and the wiring 5 when the subject is wearing.
- the mounting stabilizing member 80 may be selected from a plurality of members having different sizes (sizes). Since the holding member 10 is small and light and has a relatively thin shape and needs strength such as impact resistance, for example, polyphenylene sulfide (PPS) resin is preferably used.
- PPS polyphenylene sulfide
- the structure of the ear hook 51 is shown in FIG. As shown in FIG. 4A and as described above, the ear hook 51 has, for example, a shape similar to the ear hook of a spectacle frame. Further, the ear hooking portion 51 includes a pipe holding portion 51a, a shape portion 51b, and a tip portion 51c provided at the tip of the shape portion 51b to stabilize the mounting of the ear hook portion.
- a view of the ear hook 51 seen in the VI direction is B in FIG. 4, and a view from the V2 direction is C in FIG.
- the feature of the ear hook 51 that is, the shape of the shape portion 5 lb is well represented.
- the shape part 51b is curved so that the P1 point force of the ear hook part 51 is cut to the ear side up to the P2 point.
- the P2 point curve is curved so that the ear strength is also reduced up to the P3 point (tip 51c). Since the shape portion 51b has such a shape, the curved portion on the ear side of the shape portion 51b exactly matches the shape of the curved ear from the wheel leg 226 to the wheel 224 in FIG. It has become. By taking the shape of such a shape part 51b, A feeling of fitting can be felt by the person being measured.
- the ear hooking part is curved so that the P1 point force of the ear hook part 51 is cut to the ear side up to the P2 point.
- the P2 point curve is curved so that the ear strength is also reduced up to the P3 point (tip 51c). Since the shape portion 51b has such a shape
- the mounting portion 3 mounted in this way is connected to the apparatus main body 2 via the pipe 4 and the wiring 5.
- Piping 4 is used to send air when the cuff is pressurized or exhaust air inside the cuff when the pressure is reduced.
- the wiring 5 is a signal line for performing transmission / reception of signals for executing various controls for photoelectric pulse wave blood pressure measurement, which will be described later, between a light emitting and receiving element, which will be described later, and the apparatus body 2.
- the apparatus main body 2 may be stored in the chest pocket of the person to be measured, or may be stored in a storage portion provided on the waist.
- FIG. 5 shows the external configuration of the mounting portion 3.
- the mounting portion 3 generally includes a holding member 10, an inner cuff assembly 6, an outer cuff assembly 7, and a clamping width adjusting screw 11 (a clamping width adjusting mechanism).
- the holding member 10 has an overall "U” shape, and the first holding member 13 and the inner cuff assembly to which the outer cuff assembly 7 is attached. And a second holding member 14 to which 6 is attached.
- the “U” shape means that only one end of the holding member 10 is an open end, and the first holding member 13 and the second holding member 14 in the normal setting shown by A in FIG. This means that the portions where the solid 6 is disposed (the upper end portion and the lower end portion of the holding member 10) are substantially parallel to each other.
- a screw hole for the clamping width adjusting screw 11 is provided near the end of the first holding member to which the outer cuff assembly 7 is attached.
- the outer cuff assembly 7 is attached to the tip of the clamping width adjusting screw 11.
- the first holding member 13 is provided with a mounting stabilizing member 80.
- the mounting stabilizing member 80 is screwed into the screw hole (not shown) of the first holding member 13 and the length is adjusted by tightening or loosening the mounting stabilizing member 80.
- the tip of the mounting stabilizing member 80 is made of a relatively soft material such as polyurethane, for example, the area around the ear wheel 224 and Z or the concha 223 is compressed. Can reduce the physical and psychological burden on the user.
- the mounting stability member 80 is detachable, and it is possible to replace the mounting stability member made of a different material with a different sphere at the tip (such as a small one for children).
- the mounting portion 3 is more flexible in adapting to various shapes of the tragus 221 than the outer cuff assembly 7 is fixed and always faces the inner cuff assembly 6. Therefore, as shown in FIG. 5B, the outer cuff assembly 7 is swung by attaching the outer cuff assembly 7 to the clamping width adjusting screw 11 using the swing mechanism. . Similarly, the inner cuff assembly 6 is also installed at the end of the first holding member 13 using a swing mechanism. As described above, both the cuff assemblies can be freely adapted to the shape of the tragus 221. Note that. This swing mechanism will be described later.
- the mounting portion 3 is configured such that when the adjustment screw 83 at the holding member joint portion is loosened, the second holding member 14 is rotated around the screw 83 as a fulcrum. Yes. Accordingly, by tightening the adjusting screw 83 with the second holding member at an angle desired by the user, the outer cuff assembly 7 faces the inner cuff assembly 6 directly in front (the neck of the outer cuff assembly 7 Can be changed to non-facing state. Then, coupled with the swinging structure of the outer cuff assembly 7 (see A in FIG. 6), the positional relationship between the two cuff assemblies 6 and 7 can be subtly changed according to the user's preference. Can cope with individual differences. That is, since the cuff can be properly applied to the tragus 221 having various shapes, more appropriate blood pressure measurement can be performed.
- the mounting portion 3 can slide the second holding member 14 in addition to the above-described rotation operation by loosening the adjusting screw 83 of the holding member joint portion. And the relative positional relationship between the inner cuff assembly 6 and the outer cuff assembly 7 in the lateral direction can be changed.
- This sliding operation is realized by providing the second holding member 14 with an oval screw receiver 84 for receiving the adjustment screw 83.
- the adjustment screw 83 when the adjustment screw 83 is loosened, the head of the adjustment screw 83 can be slid left and right within the screw receiver 84, and the adjustment screw 83 can be tightened. It is fixed at the tightened position.
- the end of the open end of the second holding member 14 on which the inner cuff assembly 6 is disposed can be expanded and contracted by a predetermined width by a similar slide mechanism or another slide mechanism (for example, using a rail or the like). It may be.
- the force can be offset when the opposing position of the inner force cuff assembly 6 and the outer cuff assembly 7 is facing directly in front (state A in FIG. 5)! / ,.
- B in FIG. 6 shows a state in which the second holding member 14 is the shortest (the dotted line shows the normal state in A in FIG. 5).
- the inner cuff assembly 6 can be inserted deeper into the ear hole than in the normal state. Therefore, in a normal lateral state (for example, the state of A in FIG. 5), even when the mounting part 3 is not stable and comfortable to wear, the person to be measured (for example, a patient) and the person to be measured (for example, The user can easily determine the wearing state according to the doctor's preference.
- the holding member 10 includes the swinging structure, the rotating structure, and the sliding structure of the outer cuff assembly 7, so that it is more suitable for blood pressure measurement and is measured. A more comfortable wearing state of the wearing part 3 can be realized.
- the contact surface 25 of the outer cuff assembly 7 has a substantially circular shape.
- the cuff part (cuff bag body 22) constituting a part of the outer cuff assembly 7 has a substantially circular shape when viewed from above, and the side surface has, for example, a two-stage bellows structure (see FIG. 10). have.
- the contact surface 25 of the inner cuff assembly 6 has a substantially elliptical shape. That is, the cuff portion (cuff bag body 23) constituting a part of the inner cuff assembly 6 is substantially elliptical when viewed from the upper surface force, and the side surface is connected to the cuff bag body 22 of the outer cuff assembly. Similarly, for example, it has a two-stage bellows structure (see Fig. 12). In addition, the direction of the major axis (major axis) of the ellipse of the abutment surface 25 and the direction of insertion into the concha cavity 227 coincide.
- the inner cuff portion is elongated along the insertion direction and can be smoothly inserted into the concha cavity 227.
- the shape of the tragus 221 varies greatly from person to person, such a configuration for facilitating insertion is very important.
- the side surface of the cuff bag body 23 has a bellows structure (for example, a two-stage bellows), but it is desirable that the number of steps of the outer cuff bag body 22 and the number of steps of the inner cuff bag body 23 are aligned. .
- the cuff cross-sectional shape is an ellipse. Besides, it may be oval.
- FIG. 7A is a view showing a cross section of the inner cuff assembly 6 after assembly is completed
- FIG. 7B is a cross section of the inner cuff assembly 6 when the force in the V3 direction of A in FIG. 7 is also viewed.
- FIG. 7A is a view showing a cross section of the inner cuff assembly 6 after assembly is completed
- FIG. 7B is a cross section of the inner cuff assembly 6 when the force in the V3 direction of A in FIG. 7 is also viewed.
- an LED 20 as a light emitting element for detecting a pulse signal at a predetermined position (see A in Fig. 7) in the cuff base 140 and a phototransistor as a light receiving element.
- Star 21 is installed.
- the cuff bag body 23 is placed on the cuff base 140, and the cuff bag body 23 covered with the O-ring is fixed in accordance with the position of the base recess 140a.
- the cuff bag body 23 may be bonded to the base recess 140a with an adhesive and the force may be fixed with an O-ring.
- a phototransistor may be provided in the outer cuff assembly 7 to detect a pulse wave signal in a transmission manner.
- the pipe 4 and the wiring 5 are inserted into the cuff assembly 6 from the insertion portion 142.
- the insertion portion 142 has, for example, two insertion ports 143 and 144.
- the pipe 4 is connected to the one inlet 143, and the wiring 5 is inserted into the other inlet 145.
- the wiring 5 is connected to the LED 20 and the phototransistor 21 described above.
- the inner cuff assembly 6 is covered with a sealing member (not shown). A sealed state is created.
- the insertion port 142 may be closed with a chemical material that adheres to the air, such as an adhesive.
- the contact surface 25 of the inner cuff assembly 6 including the phototransistor of the light receiving element has an elliptical shape or an elliptical shape, and the insertion portion 142 is on the long axis (major axis) side of the elliptical shape. It may be provided on the short diameter side.
- the abutment surface 25 of the inner cuff assembly 6 is oval or oval because the inner cuff assembly 6 is inserted into the concha cavity 227, so that it can be easily inserted. It is.
- the configuration of the outer cuff assembly 7 is the same in that the cuff base is covered with a cuff bag and fixed with an O-ring.
- the LED 20 and the phototransistor 21 are not installed in the outer cuff assembly 7.
- only one soot inlet 152 is provided for the pipe 4.
- the LED 20 and the phototransistor 21 may be installed in the outer cuff assembly 7, but in that case, as in the inner cuff assembly 6, two insertion ports may be provided.
- FIG. 8 is a view for explaining the swing mechanism of the outer cuff assembly 7.
- the outer cuff base 150 has a press-fitting hole 151 into which the press-fitting member 160 is press-fitted and an insertion port 152 to which the pipe 4 is connected.
- the press-fitting member 160 has a cylindrical shape, the upper surface 160a of the member is opened, and an opening 160b that is open to the extent that the screw 161 can pass is provided near the center of the bottom surface.
- the press-fitting member 160 is fixed to the clamping width adjusting screw 11 having the screw hole 11a with the screw 161. Since the length of the screw 161 is set to be longer than the depth of the screw hole 11a, a certain clearance can be secured between the screw head 161a of the screw 161 and the bottom surface of the press-fitting member 160.
- the press-fitting member 160 is attached to the clamping width adjusting screw 11 as described above, the press-fitting member 160 is press-fitted into the press-fitting hole 151 of the outer cuff assembly 6. Then, because of the above-described clearance, the outer cuff assembly 7 can swing as shown in FIG. 8B.
- the swing mechanism of the inner cuff assembly 6 has a structure as shown in FIG. In B of FIG. 9, the press-fitting member 170 has a cylindrical shape, like the press-fitting member 160 of FIG.
- the press-fitting pin 171 is passed through the opening of the press-fitting member 170 and press-fitted into a press-fitting hole 141 provided in the inner cuff base 140. Thereby, the press-fitting member 170 is fixed to the inner cuff base 140. Further, the press-fitting member 170 is press-fitted with its completely opened surface down into the recess 172 provided at the end of the first holding member 13 constituting the holding member 10. As above Therefore, the inner cuff assembly 6 can be attached to the first holding member.
- the length of the press-fit pin 171 is longer than the depth of the press-fit hole 141. It is possible to move.
- the swing structure of the mounting portion 3 is realized by pivoting the outer cuff assembly 7 to the clamping width adjusting screw 11 with the ball bearing portion 1 la. ! /
- the swinging structure of the inner cuff assembly 6 can also be constituted by a similar ball bearing.
- FIG. 11A is a plan view of the cuff bag body 22 constituting a part of the outer cuff assembly 7, B in FIG. 11 is a front view of the cuff bag body 22, and C in FIG. 11 is a bottom view of the cuff bag body 22. is there.
- FIG. 12 is a cross-sectional view taken along line XX in FIG.
- a cuff bag body 22 includes a cylindrical portion 22b that is elastically deformed between a pressurized state and a reduced pressure state, and a flat contact that extends from the cylindrical portion 22b and contacts the tragus. It is integrally formed as a cap shape having a lid portion 22a to be a contact surface 25. Further, the edge of the opening 28 is integrally formed as a flange 26. Further, by setting the first dimension tl of the thickness of the lid part 22a to be larger than the second dimension t2 of the thickness of the cylinder part 22b, the contact surface 25 is always flat with respect to the tragus. It is configured to allow contact.
- the lid portion 22a is formed in a circular, elliptical or oval shape.
- the cylindrical portion 22b is also formed in a circular cylindrical body, an elliptical cylindrical body or an elliptical cylindrical body. It is formed in a shape that matches the tube.
- the cylindrical portion 22b is formed as a bellows body 27 having one or more desirably two stepped portions, and when the lid portion is circular, the diameter dimension is preferably in the range of 15 to 5 mm.
- the first dimension tl is in the range of 0.4 to Lmm, preferably about 0.6 mm, and the second dimension t2 is 0.1 to 0.8 mm, preferably about 0.8 mm. It should be set to 3mm.
- a in FIG. 13 is a plan view of the cuff bag body 23, B in FIG. 13 is a front view of the cuff bag body, C in FIG. 11 is a right side view of the cuff bag body, and D in FIG. It is a bottom view of a bag.
- 14A is a cross-sectional view taken along line XX in FIG. 13A
- B in FIG. 14 is a cross-sectional view taken along line YY in FIG.
- the major axis dimension is in the range of 15 to 5 mm, preferably about 10 mm
- the minor axis dimension is 10 mm. It is in the range of ⁇ 4mm, preferably about 8mm.
- the first dimension tl is 0.4 to: Lmm, preferably about 0.6 mm, and the second dimension t2 is 0.1 to 0.8 mm, preferably Is set to about 0.3 mm.
- the cuff bag bodies 22, 23 are integrally formed of an elastic material bag having a Shore hardness of 30 to 60, preferably about 50, including silicon rubber, natural rubber, and a predetermined synthetic resin.
- the contact surface 25 can move to the pressurization position while maintaining the flat state during pressurization. Further, the contact surface 25 can move to the decompression position while maintaining the flat state even during decompression. Further, by forming the cylindrical portion of the cuff bag body into a bellows body (bellows structure) 27, the contact surface 25 can be moved substantially in parallel.
- the contact surface 25 of the cuff bag bodies 22 and 23 swells in a dome shape due to air pressure when the cuff is subjected to a caloric pressure.
- air pressure unnecessary to uniformly compress the tragus 221 is absorbed by the bellows, and the contact surface 25 can be kept flat.
- the LED element 20 that detects the pulse wave optically and the phototransistor 21 are built in the cuff as described above, when the inner and outer cuffs are attached to the tragus, a part of the cuff is removed. It will be exposed to the outside. For this reason, it is difficult to measure blood pressure accurately under the condition of being exposed to sunlight including ultraviolet rays, even if it is not a problem indoors.
- FIG. 15 is a printing process diagram for forming a light shielding layer inside the cuff bag body 22, and is shown together with a central sectional view of the cuff bag body 22.
- the cuff bags 22 and 23 are made of a transparent or light-transmitting silicone rubber, natural rubber, and elastic material force of about 30 to 50, preferably about 50, including a predetermined synthetic resin. It is.
- the cuff bag bodies 22 and 23 are provided in an airtight state with respect to the cuff member, and the contact surface 25 is elastically deformed between a pressurized state and a decompressed state.
- the disturbance light L enters the inside. For this reason, when using a sensor highly sensitive to sunlight, it is affected by sunlight and accurate blood pressure measurement cannot be performed.
- a light shielding layer 45 for optically shielding other than the opening 46 is formed, and this light shielding layer 45 is further formed.
- the shading layer 45 can be prevented from wearing during use by being formed inside as shown in the figure, but it goes without saying that it may be formed outside if abrasion resistance can be ensured. .
- the light shielding layer is provided in the outer cuff assembly 7.
- the shape of the opening 46 of the light shielding layer 45 is formed as a small circle having a similar shape.
- the contact surface 25 is formed in an elliptical shape or an oval shape as described with reference to FIG. 13, the opening 46 of the light shielding layer 45 is a small or elliptical or circular shape. Or it should be oval.
- the abutment surface 25 is a circle having a diameter (D1) in the range of 15 to 5 mm, preferably about 8 mm, the diameter of the opening 46 is in the range of 2 to 8 mm, preferably about It will be set to 5mm. Also, the abutment surface 25 force The major axis dimension (D2) is in the range of 15-5mm, preferably about 10mm, and the minor axis dimension (D3) is in the range of 10-4mm, preferably about 8mm. Or, if the shape is oval, the diameter of the opening 46 is set in the range of 2 to 8 mm, preferably about 5 mm, or a circle, oval or oval with an opening area equivalent to this circle Is done.
- the light shielding layer 45 provided with the opening 46 can be formed by, for example, a two-color injection molding method.
- step S1 a cuff bag formed by a rubber molding device and deburred.
- the body 22 is visually inspected, defective products are removed and non-defective products are selected, and then set on a painting tray (not shown).
- step S2 after degreasing, it is confirmed that no foreign matter is mixed in, and a masking sheet 70 having a shape and area corresponding to the opening 46 and having an adhesive surface with a light adhesive force is attached to the cuff bag body 22. Affix to the center of the back of the lid. At this time, a jig should be used for positioning.
- the light-shielding layer 45 shown by the broken line is formed by applying the above-mentioned binder paint with a brush or a spray gun.
- the next step S4 room temperature drying process, leave it for about 1 hour, and after accelerating the drying, remove the masking 70 using a tool such as tweezers.
- step S5 the dried cuff bag body is placed in the oven apparatus, and the oven treatment for baking coating is performed at about 200 ° C for about 10 to 15 minutes. Afterwards, the oven tray paint tray is taken out, and the appearance inspection is performed in the finishing inspection process of Step S6 to detect foreign matter, paint sticking out of the opening 46, coating unevenness, etc. We will sort out good products and finish.
- the above is an example of a process for forming a light shielding layer on the inner side of the cuff bag body, but substantially the same process may be performed when the light shielding layer is formed on the outer side of the cuff bag body. Furthermore, the above two-color injection molding method eliminates the need for the above-mentioned coating process, but since the molding die is complicated and expensive, it is determined which method should be adopted in view of the quantity of cuff production. It will be.
- the clamping width adjusting screw 11 is, for example, screwed into the female screw hole formed in the second holding member 14 with the male screw portion formed on the outer peripheral surface of the main body of the adjusting screw 11 as illustrated.
- the outer cuff assembly provided with the cuff bag body 23 can be arbitrarily moved by rotating the adjustment screw 11 in the forward and reverse directions, and can be freely swung (see FIGS. 8 to 10).
- the brushing bush 49 which is a one-way moving member that enables the outer cuff assembly to move to a desired position at once, regardless of the moving stroke of the outer cuff assembly, can be used in place of the adjusting screw 11.
- a brushing bush 49 which is a one-way moving member, has a plurality of elastically deformable flange portions 49b on its outer peripheral surface, and a ball bearing portion 49a at the end portion of a nylon-based predetermined rod. It is integrally formed from a fat material as shown in the figure.
- the diameter of the flange 49b is set to be larger than the inner diameter of the hole 15a formed at the other end of the third holding member 15.
- the outer force assembly can be held.
- the stopper portion (not shown) is configured to be brought into contact with the edge portion of the hole portion 15a and pulled out to the original position by pulling with a larger force than that at the time of insertion.
- the brushing bush 49 is close to a product called a so-called one-touch fastener and has a structure.
- pipe 4 and wiring 5 are provided separately. This is inconvenient because they are entangled with each other in use.
- the pipe 4 has a hollow portion that is a flow path for fluid containing air along the longitudinal direction, the wiring 5 is not exposed to the outside by passing the wiring 5 through the hollow portion. Can be configured.
- the force that requires a seal part to secure the airtightness is needed at the site where the wiring 5 is pulled out of the piping 4, and it is difficult to ensure the sealing performance because the piping 4 can be bent freely. This leaves a problem with long-term durability. In addition, the assembly work will be hindered.
- the wiring 5 connected to the light emitting element and the light receiving element, respectively is a stranded wire 5a, 5b connected to the light emitting element and the light receiving element, respectively, and the pipe 4 is made of silicon rubber,
- the cover member 9 is formed into a mesh shape from a fibrous body having a predetermined count, and is formed into a hollow shape as shown in the figure using an elastic material containing natural rubber and a predetermined synthetic resin. Further, the covering member 9 is subjected to a metal coating treatment for improving noise resistance and further covered with a cover (not shown).
- the pipe 4 and the wiring 5 are integrated as described above, for example, when one of them is gripped in FIG. 17, it can be freely bent within an arc indicated by a one-dot chain line. Further, since the wiring 5 can be directly drawn out from the outer peripheral surface of the pipe 4 as shown in FIG. 17, no seal member is required. Further, when the covering member 9 is subjected to metal treatment, the noise resistance can be further improved. Even if the covering member 9 is simply made of cloth, the pipe 4 and the wiring 5 are protected from the outside, and the pipe and the wiring are hardly damaged.
- pressurized air is sent to each cuff by a battery-driven pressure pump.
- a pressure pump driven by a battery When a pressure pump driven by a battery is used, the battery is consumed very much, so that measurement over a long period of time becomes impossible. Therefore, a manual pressure pump may be used.
- the fluid medium to be pressurized includes various fluids. In the case of a gas, there is air, and in the case of a liquid, there are water, fats and oils including silicon oil, alcohol, etc., which are appropriately selected.
- FIG. 18 is a diagram illustrating a configuration of the coupling unit 300 in FIG.
- the coupling portion 300 includes an upper lid member 301 and a housing member 302.
- the accommodating member 302 accommodates the pipe 4 and the wiring 5.
- a pipe plug 304 is attached to the end of pipe 4, and the end of wiring 5 is
- a female connector 305 is attached.
- the female connector 305 is disposed in the connector housing portion 309. Further, the pipe plug 304 is installed in the plug installation section 311 and is fixed to the place by the upper force E-ring 30 7. When the pipe plug 304 is installed, a predetermined length at the tip of the pipe plug 304 protrudes from the plug protrusion hole 308.
- the upper cover member 301 is also covered with an upper force. Then, the upper lid engaging portions 313a and b are engaged with the accommodating portion engaging holes 315a and b, respectively. In a state where the locking portion 313 and the locking hole 315 are locked, the tension force, the upper lid member 301 and the housing member 302 are fixed using the screw 306.
- FIG. 19 is a diagram showing a state when coupling unit 300 is coupled to main body 2.
- the coupling portion 300 represents only the upper lid member 301 before coupling and a part of the housing member 302 after coupling.
- the push button 303 is attached to the upper lid member 301 via the panel 321.
- the push button 303 is pressed, and the width between the locking parts 322 is slightly reduced.
- the coupling portion 300 is inserted into the coupling recess of the main body 2
- the female connector 305 is fitted with the male connector 318 of the main body 2
- the piping plug 304 is fitted into the piping plug hole 319.
- the locking portion 322 is locked in a locking hole 322 provided in the main body 2.
- the coupling portion 300 and the main body 2 are fixed with a tense force.
- the push button 303 can be pressed to remove the locking portion 322 from the locking hole 320 and pull out the coupling portion 300 from the coupling recess.
- the force engaging portion 322 is attached to the main body 2 because the locking portion 322 is a plate spring, so there is a certain degree of elasticity, and the main body can be obtained without pressing the push button 303 to shorten the distance between the engaging portions. Can be connected by pushing into the 2 connecting holes.
- the connecting part 300 in order to connect the connecting part 300 to the main body 2 more smoothly and safely, it is better to reduce the distance between the engaging parts.
- FIG. 20 is a block diagram showing a configuration of the operation circuit 100 in the apparatus main body 2 when the blood pressure measurement apparatus is configured as a photoelectric volume pulse wave sphygmomanometer.
- the inside cuff (assembly) 6 of the mounting portion 3 to be attached to the tragus 221 has a photoelectric cell.
- LED 20 that is a light emitting element constituting a sensor (pulse wave sensor) and a phototransistor 21 that is a light receiving element are included.
- the piping 4 is a rubber tube (air tube) and forms a flow path of air into the inner cuff 6.
- the pressure pump 108 uses an electric small motor as a drive source, sends compressed air into the condenser tank 107, and sends pressure air into the inner cuff assembly 6 after rectification.
- the quick exhaust valve 104 branched from the pipe 4 is provided with a solenoid valve mechanism (not shown), which rapidly reduces the pressure in the inner cuff assembly 6.
- the fine exhaust valve 105 connected in a branched manner reduces the pressure in the inner cuff assembly 6 at a constant speed (for example, 2 to 3 mmHgZsec).
- the pressure sensor 106 branched from the pipe 4 changes the electrical parameter according to the pressure in the force 6.
- a pressure detection amplifier (AMP) 107 connected to the pressure sensor 106 detects an electrical parameter of the pressure sensor 106, converts it into an electrical signal, amplifies it, and outputs an analog cuff pressure signal P. .
- AMP pressure detection amplifier
- the LED 20 irradiates light to the pulsating vascular blood flow, and the phototransistor 21 detects reflected light from the vascular blood flow.
- a filter AMP109 connected via the wiring 5 is a pulse wave detection amplifier, which amplifies the output signal of the phototransistor 21 and outputs an analog pulse wave signal M.
- the LED 20 is connected with a light amount control unit 118 that automatically changes the light amount via the wiring 5, while the pulse wave detection amplifier 109 has a gain control unit 119a that automatically changes the gain,
- a pulse wave detection filter is connected to a time constant control unit 119b that changes a time constant of a filter amplifier (not shown) constituting the amplifier 109.
- the AZD conversion (AZD) 110 connected as shown in the figure converts the analog signals M and P into digital data D.
- the control unit (CPU) 111 performs main control of the photoelectric volume pulse wave sphygmomanometer.
- the CPU 111 has an adjustment pressure register 111a for storing the adjustment pressure. Details of this control will be described later according to the flowcharts of FIGS. 22A and 22B and the operation waveform diagram of FIG.
- ROM 112 stores a control program to be described later that is executed by CPU 111.
- the RAMI 13 includes a data memory, an image memory, and the like.
- a liquid crystal display (LCD) 114 displays the contents of the image memory.
- the operation unit 116 is used when a measurement start command or an adjustment pressure value is set by a user operation.
- the buzzer 115 informs the user that the device has sensed that the key in the operation unit 116 has been pressed, the end of the measurement, or the like.
- An adjustment pressure storage unit may be provided in the force RAMI 13 in which the adjustment pressure register 11 la is provided in the CPU 111.
- the LCD display panel 114 uses a dot matrix type display panel, and therefore can display a variety of information (for example, characters, figures, signal waveforms, etc.).
- the operation unit 116 has keys for inputting a measurement start switch (ST), a cuff pressure value, and the like.
- a power supply unit 121 in which the knotter is replaceable and a power supply switch (not shown) are further provided.
- the device body 2 is provided with a connector (not shown) or an external communication unit connected to a mobile phone.
- a connector not shown
- an external communication unit connected to a mobile phone.
- FIG. 21 is a diagram showing the actual arrangement of the apparatus main body 2 of FIG. 2, with the lid removed.
- the main body 2 has a vertical dimension of about 120 mm, a width dimension of about 80 mm, and a thickness dimension of 27 mm.
- the weight is 180 grams. In this way, by making it as small and lightweight as possible, even if it is always carried, it will not interfere with daily life.
- the electronic component that controls each of the above controls is mounted on a substrate 140 having a mounting area that occupies the internal space.
- the pressure pump 108, the condenser tank 107, the fine exhaust valve 105, and the quick exhaust valve 104 are connected to the integrally formed pipe 4 as described above, and have a mutual arrangement relationship as shown in the figure. It can be installed together with a power supply unit 121 of four AAA batteries, which can be exchanged. In this way, the limited internal space can be used effectively.
- rechargeable rechargeable batteries that can be used repeatedly and commercially available AAA batteries can be easily replaced by opening and closing the lid (not shown).
- 22A and 22B are flowcharts for explaining the measurement processing of the blood pressure measurement device (photoelectric volume pulse wave sphygmomanometer).
- the self-initial diagnosis process (not shown) is performed first.
- the device is initialized. After that, the process is started by pressing the measurement start switch.
- step S101 the cuff pressure P is read.
- step S102 it is determined whether or not the residual pressure of cuff 1 is within a specified value. If the residual pressure exceeds the specified value, “residual pressure error” is displayed on the LCD 114 in step S123. If the residual pressure is within the specified value, the cuff pressure value (for example, a value greater than the maximum blood pressure value of 120 to 210 mmHg) is set using the operation unit 118 in step S103, and the light intensity and gain are set in step S104. Is set to a predetermined value.
- step S107 driving of the pressure pump 3 is started and pressurization (pressure increase) is started. This is the start of the measurement process during pressurization, and the cuff pressure starts increasing at a constant speed (for example, 2 to 3 mmHgZsec).
- step S108 data processing by each functional block is performed in step S108, and the minimum blood pressure and the maximum blood pressure are measured.
- the drive of the pressurizing pump 103 is stopped in step S112.
- step S110 it is determined whether or not the cuff pressure is higher than the pressurization value U set in S103.
- step S 113 it is determined whether or not the signal level of the pulse wave signal obtained at the time of pressurization is within a range of a predetermined level that enables high-precision blood pressure measurement. If it is determined that it is within the predetermined range, the measured maximum blood pressure value and minimum blood pressure value are displayed on the LCD 114 in step S120, and a tone signal is sent to the buzzer 115 in step S121.
- step S114 the light amount and gain are adjusted based on the signal level of the pulse wave signal in step S114.
- step S114 for example, the following processing is performed. If the pulse wave carrier is below the standard value (20 to 40% of the full scale of the AZD converter 110), check whether the step light quantity is the maximum or not, and if not, control the light quantity control unit 118. Increase the amount of light, and increase the gain when the amount of light is maximum. On the other hand, if the carrier level is equal to or higher than the standard value, it is checked whether or not the gain is minimum. If not, the gain control unit 119a performs feedback control to lower the gain. Most If it is small, reduce the amount of light.
- step S115 This is the start of the measurement process during pressure reduction (pressure reduction), and the cuff pressure starts decreasing at a constant speed (for example, 2 to 3 mmHgZsec).
- step S116 data processing by each functional block is performed in step S116, and the systolic blood pressure and the diastolic blood pressure are measured.
- step S117 it is determined whether or not a minimum blood pressure value is detected during decompression. If not detected, continue measurement.
- step S118 it is determined whether or not the cuff pressure is lower than a predetermined value L (for example, 40 mmHg).
- step S116 If P ⁇ L, it is still in the normal measurement range, and the flow returns to step S116. On the other hand, when P ⁇ L, the cuff pressure is already lower than the normal measurement range, so “measurement error” is displayed on the LCD 114 in step S119. If necessary, display detailed information such as “signal anomaly during decompression”.
- step S117 When the measurement is completed in step S117, the measurement process is completed in the normal measurement range.
- step S120 the highest blood pressure value and the lowest blood pressure value measured on LCD 14 are displayed. Send tone signal to. Preferably, different tone signals are sent after normal termination and abnormal termination.
- step S122 the remaining air of the cuff 6 is quickly exhausted and the next measurement is started.
- FIG. 23 is a diagram showing the correlation between the cuff pressure and the pulse wave signal.
- the starting force of measurement during pressurization (step S108) and the waveform in the time until the end of measurement during depressurization (step S116) are shown.
- blood pressure measurement is roughly performed as follows.
- the cuff pressure at the point (a) where the change in the magnitude of the pulse wave signal has started is the minimum blood pressure
- the cuff pressure at the point of disappearance of the pulse wave signal (b) is the maximum blood pressure.
- the blood pressure measurement during decompression is the opposite of the blood pressure measurement during pressurization, and the cuff pressure at the present time (c) of the pulse wave signal is changed to the maximum blood pressure and the change in the magnitude of the pulse wave signal ( The cuff pressure in d) is the minimum blood pressure.
- the photoelectric volume pulse wave sphygmomanometer of the present embodiment makes it possible to adjust the signal level so that the signal level of the pulse wave signal is within a predetermined standard range. It is possible to provide a photoelectric volume pulse wave sphygmomanometer that makes it possible to reduce the physical burden on the user due to cuff pressure by making it possible to reduce blood pressure measurement time. . Since the tragus and its surroundings are insensitive to pain, it also has the effect of reducing pain due to cuff pressure, and this also makes it easier to apply to continuous blood pressure measurement. to be born.
- the blood pressure measurement device described above detects a pulse wave using the light emitting element 20 and the light receiving element 21, it includes a cuff that compresses pressure on the tragus, and the pulsation caused by blood vessels on the surface of the living body is detected.
- the pulse wave can also be detected by capturing it as a pressure change.
- the pulsation obtained by vitality with the cuff that has been marked with pressure is converted into a change in the pressure in the cuff, and the pressure change in the cuff is detected by the pressure detection device. Even with such a configuration, the pulse wave of a living body can be detected.
- a small microphone is installed in the cuff that touches the living body, and Korotkoff sounds generated when a part of the living body is pressed with the cuff are detected, and blood pressure is determined based on the occurrence or disappearance of the Korotkoff sounds above a predetermined level. Even if you measure it
- FIG. 24 is a block diagram illustrating a configuration example of a blood pressure measurement device as a photoelectric volume pulse wave sphygmomanometer of a blood pressure measurement device according to another embodiment.
- the same reference numerals are given to the components or parts that have already been described, and the description is omitted.
- Both the inner cuff assembly 6 and the outer assembly 7 for sandwiching the tragus 221 are provided with a light irradiation unit.
- LEDs 20a and 20b, and phototransistors 21a and 21b, which serve as a light receiving portion for detecting reflected light, are incorporated.
- a sensor may be provided on the inner and outer cuffs so that blood pressure on the back side and front side of the tragus can be measured simultaneously.
- the cuff on one side compresses the blood vessels (arterioles) on the back side of the outer ear and its peripheral part, and the cuff on the other side superficial temporal artery on the front side of the outer ear and its peripheral part.
- the branch vessel can be compressed.
- FIG. 25 is a diagram showing a blood pressure measurement result by simultaneous measurement of the inner and outer cuffs. As shown in the figure, the pulse wave signal K1 of the inner cuff 6 changes and the pulse wave signal K2 of the outer cuff 7 changes as the caloric pressure curve W1 decreases.
- the amplitude of the pulse wave signal K1 starts to change greatly at an earlier time point than the waveform of the pulse wave signal K2.
- the blood pressure in the outer ear and its peripheral part (more specifically, the tragus and the peripheral part) is measured for the following reason.
- the photoelectric volume pulse wave sphygmomanometer of the present embodiment makes it possible to adjust the signal level so that the signal level of the pulse wave signal falls within a predetermined standard range, and it is possible to measure blood pressure with high accuracy in the outer ear periphery. At the same time, by making it possible to shorten the blood pressure measurement time, it is possible to reduce the physical burden on the user due to the cuff pressure.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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EP06729901.6A EP1867278A4 (en) | 2005-04-08 | 2006-03-24 | SPHYGMOMANOMETRY INSTRUMENT |
CN2006800098516A CN101150978B (zh) | 2005-04-08 | 2006-03-24 | 血压测定装置 |
US11/902,350 US7572227B2 (en) | 2005-04-08 | 2007-09-20 | Blood pressure measuring apparatus |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005112578A JP4559281B2 (ja) | 2005-04-08 | 2005-04-08 | 血圧測定装置 |
JP2005-112578 | 2005-04-08 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/902,350 Continuation US7572227B2 (en) | 2005-04-08 | 2007-09-20 | Blood pressure measuring apparatus |
Publications (1)
Publication Number | Publication Date |
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WO2006109521A1 true WO2006109521A1 (ja) | 2006-10-19 |
Family
ID=37086807
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/305953 WO2006109521A1 (ja) | 2005-04-08 | 2006-03-24 | 血圧測定装置 |
Country Status (6)
Country | Link |
---|---|
US (1) | US7572227B2 (ja) |
EP (1) | EP1867278A4 (ja) |
JP (1) | JP4559281B2 (ja) |
CN (1) | CN101150978B (ja) |
TW (1) | TWI306756B (ja) |
WO (1) | WO2006109521A1 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP4460414B2 (ja) * | 2004-10-06 | 2010-05-12 | 日本電信電話株式会社 | 血圧計 |
JP6287894B2 (ja) * | 2015-02-27 | 2018-03-07 | オムロンヘルスケア株式会社 | 血圧測定用カフおよび血圧計 |
WO2017064837A1 (ja) * | 2015-10-14 | 2017-04-20 | 京セラ株式会社 | 測定装置及び測定方法 |
JP7445998B2 (ja) * | 2019-04-19 | 2024-03-08 | 42 ヘルス センサー ホールディングス リミテッド | 心臓血管監視デバイス、及びウェアラブル心臓血管監視デバイスを含むシステムの動作方法 |
Citations (2)
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JPH0417651B2 (ja) * | 1981-08-21 | 1992-03-26 | Nat Res Dev | |
WO2005034742A1 (ja) * | 2003-10-09 | 2005-04-21 | Nippon Telegraph And Telephone Corporation | 生体情報検出装置及び血圧計 |
Family Cites Families (12)
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US3051165A (en) * | 1959-10-14 | 1962-08-28 | Honeywell Regulator Co | Apparatus for automatically measuring blood pressure and pulse rate |
US3227155A (en) * | 1961-07-10 | 1966-01-04 | Honeywell Inc | Sphygmomanometric measuring apparatus |
US3412729A (en) * | 1965-08-30 | 1968-11-26 | Nasa Usa | Method and apparatus for continuously monitoring blood oxygenation, blood pressure, pulse rate and the pressure pulse curve utilizing an ear oximeter as transducer |
US3815583A (en) * | 1972-01-19 | 1974-06-11 | T Scheidt | Pulse monitoring system |
US6699199B2 (en) * | 2000-04-18 | 2004-03-02 | Massachusetts Institute Of Technology | Photoplethysmograph signal-to-noise line enhancement |
US6575912B1 (en) * | 2001-10-16 | 2003-06-10 | Pacesetter, Inc. | Assessing heart failure status using morphology of a signal representative of arterial pulse pressure |
JP2005528134A (ja) * | 2002-01-31 | 2005-09-22 | ビーティージー・インターナショナル・リミテッド | 静脈の酸素測定法、静脈の脈動酸素測定法 |
US7341559B2 (en) * | 2002-09-14 | 2008-03-11 | Masimo Corporation | Pulse oximetry ear sensor |
JP2005006906A (ja) | 2003-06-19 | 2005-01-13 | Mitsuba Corp | 耳装着型の体調測定装置 |
US20050049468A1 (en) * | 2003-09-03 | 2005-03-03 | Sven-Erik Carlson | Increasing the performance of an optical pulsoximeter |
US20050141729A1 (en) * | 2003-12-26 | 2005-06-30 | Casio Computer Co., Ltd. | Ear-attaching type electronic device and biological information measuring method in ear-attaching type electronic device |
JP4017651B2 (ja) | 2006-05-22 | 2007-12-05 | 沖電気工業株式会社 | 紙幣収納装置 |
-
2005
- 2005-04-08 JP JP2005112578A patent/JP4559281B2/ja active Active
-
2006
- 2006-03-24 WO PCT/JP2006/305953 patent/WO2006109521A1/ja active Application Filing
- 2006-03-24 EP EP06729901.6A patent/EP1867278A4/en not_active Withdrawn
- 2006-03-24 CN CN2006800098516A patent/CN101150978B/zh not_active Expired - Fee Related
- 2006-03-28 TW TW095110706A patent/TWI306756B/zh not_active IP Right Cessation
-
2007
- 2007-09-20 US US11/902,350 patent/US7572227B2/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0417651B2 (ja) * | 1981-08-21 | 1992-03-26 | Nat Res Dev | |
WO2005034742A1 (ja) * | 2003-10-09 | 2005-04-21 | Nippon Telegraph And Telephone Corporation | 生体情報検出装置及び血圧計 |
Non-Patent Citations (1)
Title |
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See also references of EP1867278A4 * |
Also Published As
Publication number | Publication date |
---|---|
US20080091112A1 (en) | 2008-04-17 |
JP4559281B2 (ja) | 2010-10-06 |
CN101150978B (zh) | 2010-11-17 |
JP2006288644A (ja) | 2006-10-26 |
EP1867278A4 (en) | 2014-07-09 |
EP1867278A1 (en) | 2007-12-19 |
US7572227B2 (en) | 2009-08-11 |
TW200640414A (en) | 2006-12-01 |
CN101150978A (zh) | 2008-03-26 |
TWI306756B (en) | 2009-03-01 |
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