JP5486202B2 - Blood pressure monitor and manufacturing method thereof - Google Patents

Description

  The present invention relates to a sphygmomanometer having a cylindrical housing, an air bag that is provided in the housing and presses the upper arm of a measurement subject, and a pressurizing means for supplying air to the air bag. And a manufacturing method thereof.

  Home blood pressure monitors are becoming popular so that blood pressure can be measured on a daily basis for health management. It is desirable that a home sphygmomanometer not only accurately measures blood pressure but also has a simple operation method, is inexpensive, and is compact.

  An arm-in sphygmomanometer (for example, Patent Document 1) is suitable for home use because blood pressure can be automatically measured simply by inserting the upper arm and operating a predetermined button.

  The basic components of an arm-in type sphygmomanometer are a cylindrical housing, an air bag that is provided in the housing and presses the upper arm of the person to be measured, and air is supplied to the air bag. There is a pressurizing means for supplying air.

Japanese Patent No. 4186839

  For arm-in sphygmomanometers (ie, methods that do not require air bags to be wrapped around the upper arm to measure blood pressure), the cylindrical housing is set to a reasonably large diameter so that it can be measured even with a thick upper arm Has been. On the other hand, the internal air bag is configured to be sufficiently inflated toward the inner diameter side so that measurement can be performed even for a thin upper arm.

  However, in order to enable sufficient expansion as described above, it is necessary to increase the capacity of the air bag, and random folding (including wrinkles and the like) is likely to occur. When the air bag is pressurized by the pressurizing means, the folding existing in the initial state remains as it is, and there is a concern that the air bag expands in an unnatural shape. If it does so, an internal upper arm cannot be compressed appropriately, for example, it is possible that only one surface of an upper arm is pressed or the direction of an upper arm becomes diagonal.

  In such a state, blood pressure measurement accuracy decreases in both the Korotkoff method and the oscillometric method.

  The present invention has been made in view of such problems, and an object of the present invention is to provide a sphygmomanometer capable of appropriately pressing the upper arm with an air bag in an arm-in sphygmomanometer and a method for manufacturing the same. .

A sphygmomanometer according to the present invention includes a cylindrical housing into which an upper arm of a person to be measured is inserted, and an armband provided in the housing and provided with an air bag that compresses the upper arm of the person to be measured inserted therein. , and a pressurizing means for supply air to the air bag, the air bag is to have a plurality of folds extending in a longitudinal direction in which the upper arm is inserted into the inner circumferential surface, further, wherein provided on the inner peripheral surface of the air bag, located therebetween a plurality of said folds, characterized Rukoto to have a microphone to detect the Korotkoff sounds.

By having such a fold, the location where the air bag folds is specified, and the bulging portion is formed at an appropriate position as a fold, so that the upper arm can be appropriately compressed. If a sensor such as a microphone is provided at this portion, the measurement accuracy is improved because the sensor is in close contact with the upper arm. The fold is a simple structure and has no structural influence on the housing. In addition, the microphone can easily come into close contact with the upper arm, and Korotkoff sound can be detected accurately.

  Here, the fold is intentionally formed at a specified position from the manufacturing stage of the air bag, and has a different meaning from that naturally formed after the air bag is attached to the armband. The cylindrical shape here may be a shape having a hole part into which the upper arm can be inserted, and includes, for example, a shape on which a table can be placed.

  Four folds may be provided at substantially equal intervals on the inner peripheral surface of the air bag. Thereby, the upper arm can be stably pressed from four directions (for example, up, down, left, and right).

  The crease may have a thin wall structure as compared with other portions. In a thin structure, it becomes a simple structure rather than making it thick compared with other parts.

  The air bag may be a bag formed by welding the periphery of a resin sheet, and the fold may be formed by heating the resin sheet. A fold can be easily formed by heating.

  You may have a cushioning material provided in the inner peripheral surface of the said air bag, and it is located between several said crease | folds, and is provided with the inclined surface which becomes thin toward the exit direction of the said test subject's upper arm. By providing an inclined surface on the cushion material, it becomes easier to insert or remove the upper arm. Further, when a microphone is provided at this position, the microphone is more easily adhered to the upper arm.

  A calculation unit that calculates the blood pressure of the measurement subject; a display unit that displays the blood pressure calculated by the calculation unit; and a tube that connects the housing and the pressurizing unit to allow air to flow therethrough. The pressure unit, the calculation unit, and the display unit may be provided in a main body unit separate from the armband via the tube. As a result, the measurement subject can measure blood pressure in a free posture not restricted by the position of the main body, and the measurement accuracy is improved. There is no need to wrap the armband like a hook-and-loop type, and it is only necessary to insert the upper arm. Moreover, it becomes compact as a whole.

  You may have the reinforcing material provided in the outer peripheral side of the said air bag, located in the location corresponding to the said crease | fold, and extended in the vertical direction. According to such a reinforcing material, it is easy to fix the air bag to the housing, and the air bag is stabilized.

  You may have the reinforcing material which is provided in the outer peripheral side of the said air bag, is located in the entrance side of the upper arm of the said to-be-measured person, and extends in the circumferential direction. According to such a reinforcing material, the air bag is stabilized even when the upper arm is pulled out from the housing.

A method of manufacturing a sphygmomanometer according to the present invention includes a cylindrical housing into which an upper arm of a person to be measured is inserted, and an air bag that is provided in the housing and compresses the upper arm of the person to be measured inserted therein. A sphygmomanometer manufacturing method comprising an armband and a pressurizing means for supplying air to the air bag, wherein the resin sheet is heated and a plurality of folds are formed in a vertical direction which is a direction of insertion. A step of forming, a step of providing a cushion material having an inclined surface that becomes thinner toward the exit direction of the upper arm of the person to be measured at a position between the plurality of folds, and a bending position in the lateral direction of the resin sheet A step of forming the air bag by bending and welding the periphery to form a bag. A fold can be formed easily and inexpensively by heating. A step of providing a pocket for a microphone between the plurality of folds on the inner peripheral surface of the air bag may be provided.

  According to the sphygmomanometer and the method for manufacturing the same according to the present invention, the folding direction of the air bag is specified by providing the folding line in an appropriate direction in advance, and the bulging part is located at an appropriate position as the folding line. Once formed, the upper arm can be properly compressed. Moreover, the housing outer diameter of the armband in which the air bag is stored can be reduced, and the weight can be reduced.

It is a perspective view of the sphygmomanometer according to the present embodiment. It is a disassembled perspective view of an arm band. It is a perspective view of the air bag of the developed state. It is a disassembled perspective view of the air bag of the expand | deployed state. It is a partially-omission perspective view which shows arrangement | positioning of the components in an arm band. It is a front view of an arm band. It is a figure which shows a mode that a blood pressure is measured with the blood pressure meter which concerns on this Embodiment. It is a flowchart of the manufacturing method of the blood pressure meter which concerns on this Embodiment. It is a figure which shows the formation process of the fold by a high frequency welding machine. It is sectional drawing of a fold. It is a figure which shows the process bent by the resin sheet bending line.

  Hereinafter, embodiments of the sphygmomanometer and the manufacturing method thereof according to the present invention will be described with reference to FIGS.

  As shown in FIG. 1, the sphygmomanometer 10 according to the present embodiment is a so-called arm-in type, and includes an arm band (also referred to as a cuff or a manchette) 12 into which the upper arm of the measurement subject is inserted, and a tube 14. A main body 16 connected to the armband 12 and placed on a table or the like. The arm band 12 is freely movable within the length of the tube 14, and the measurement subject can measure blood pressure in a relaxed arbitrary posture. The sphygmomanometer 10 is driven by a commercial AC power supply or a battery (including a secondary battery).

  The main body 16 includes a pressurizing unit 18 that supplies and exhausts air to and from the armband 12, a calculation unit 20 that measures the blood pressure of the measurement subject, and a display unit 22 that displays the blood pressure obtained by the calculation unit 20. And an operation button 24. The pressurizing means 18 includes a pressurizing pump 18a, an exhaust valve 18b, a pressure sensor 18c, and the like.

  As shown in FIG. 2, the armband 12 is a cylindrical and rigid housing 30 and an air bag (also referred to as an airbag or a bladder) that is provided in the housing 30 and presses the upper arm of the measurement subject inserted therein. 32), two microphones 34 provided in the air bag 32, a noise sensor 35, and a flexible cloth cover 36 that covers the air bag 32 so that the air bag 32 is not exposed. The cloth cover 36 is formed of a stretch material that can expand and contract in the axial direction and the circumferential direction. The microphone 34 detects Korotkoff sound (hereinafter referred to as K sound) and supplies the signal to the arithmetic unit 20. When noise other than blood flow (for example, ambient noise or vibration when touching the main body 16) is detected with respect to the microphone 34, the noise sensor 35 can cancel the detection signal and accurately K sound can be detected from the measurement point of the upper arm.

  The housing 30 is provided with a handle 38 at the top so that the housing 30 is easy to hold and the vertical orientation is defined. The housing 30 has, for example, a weight of about 350 g, an outer diameter of about 140 mm, and an inner diameter of about 135 mm. Since the housing 30 is lightweight, it feels less uncomfortable when attached to the upper arm as compared to a wrist band wound around the upper arm. The housing 30 and the handle 38 are made of resin. The air bag 32 is connected to the pressurizing means 18 by the tube 14, is supplied and exhausted, and has an annular shape so as to press the upper arm of the measurement subject inserted therein. The air bag 32 is unfolded as shown in FIG. 3 before being incorporated into the housing 30 at the manufacturing stage.

  In the following description of the armband 12 and its components, the vertical direction in which the upper arm is inserted is the X direction, and the direction along the circumference of the housing 30 is the Y direction. When the person to be measured inserts the upper arm in the armband 12, the side close to the elbow is set to the X1 side, and the side close to the shoulder is set to the X2 side. In order to make it easier to understand the insertion direction of the upper arm of the armband 12, for example, the X1 direction side may be slightly narrowed.

  As shown in FIGS. 3 and 4, the air bag 32 includes a resin sheet 40, three sponges (cushion materials) 42, four X bell poles (reinforcing materials) 44 a, and one Y bell pole 44 b It has two pockets 46. The resin sheet 40 is a transparent urethane sheet having a width of about 120 mm and a length of about 420 mm, for example. The sponge 42 is, for example, a flexible urethane foam having a weight of about 0.8 g. The X bell pole 44a and the Y bell pole 44b are, for example, foamed polyethylene thin plates. The weight of the X bell pole 44a is about 2 g, for example, and the weight of the Y bell pole 44b is about 10 g, for example.

  The resin sheet 40 is folded in half along the Y-direction bend line 48 at the center, and the periphery is welded into a bag shape to form a base body of the air bag 32. The resin sheet 40 includes a nozzle 50 provided at an end portion, and four folds 52a, 52b, 52c, and 52d extending in the X direction. The nozzle 50 is, for example, urethane vinyl chloride, and is connected to the tube 14. In the resin sheet 40, the inner peripheral portion (X1 side from the bent line 48 in FIG. 4) is the inner peripheral surface 40a, and the outer peripheral portion (X2 side from the bent line 48 in FIG. 4) is the outer peripheral surface. 40b. At the end of the inner peripheral surface 40a, a folding allowance 40c that is folded back with respect to the outer peripheral surface 40b is provided.

  The folds 52a to 52d are thin portions provided at substantially equal intervals over the entire length in the X direction on the inner peripheral surface 40a and the outer peripheral surface 40b. As will be described later, the folds 52a to 52d are formed at specified positions by being heated by a high-frequency dielectric action by the high-frequency welder 100 (see FIG. 9) in the manufacturing stage. Such folds 52 a to 52 d are easily bent when assembled to the housing 30. This has been actually confirmed by the inventor of the present application, and the principle is considered to be that the folds 52a to 52d are soft as much as they are thinner than the other portions. In order to cause the bending to occur at a desired position and orientation, the folds 52a to 52d may be configured to have different thicknesses and / or hardnesses from other portions.

  The folds 52a and 52d have a width of about 20 mm in the Y direction, and the folds 52b and 52c have a width of about 10 mm in the Y direction, and are easily bent.

  Note that the widths of the folds 52a and 52d and the folds 52b and 52c may be the same, but in this embodiment, when the folds 52a and 52d are installed in the housing 30 in consideration of the load due to the weight of the upper arm, The widths of the folds 52a and 52d are larger than those of the folds 52b and 52c located on the upper side, and are more easily bent.

  Here, the folds 52a to 52d are intentionally formed at specified positions from the manufacturing stage of the air bag 32, and of course, they are not naturally formed after the air bag 32 is attached to the armband 12. It is.

  On the inner peripheral surface 40a of the air bag 32, the microphones 34 are provided in the pockets 46 between the plurality of folds 52a and the folds 52b and between the folds 52c and the folds 52d, respectively.

  The three sponges 42 are provided between the folds 52a to 52d. The Y direction (width) is about 40 mm, the X direction (length) is about 65 mm, and the height is about 25 mm. It has the inclined surface 42a which becomes thin toward it. A pocket 46 is disposed on the inside of the three sponges 42 where two sides are provided, and the microphone 34 is disposed on the inclined surface 42 a of the sponge 42. According to such an arrangement, the microphone 34 can be easily adhered to the upper arm by the sponge 42, and the K sound can be detected accurately. Further, by providing the sponge 42, a dead space in the air bag 32 is secured, the shape in the initial state is appropriately maintained, and the amount of air supplied to the air bag 32 can be reduced.

  Since the inclined surface 42a is formed so as to become thinner in the X1 direction, the armband is measured even if there is some residual pressure in the air bag 32 after measuring the blood pressure by pressing the upper arm with the air bag 32. It is easy to remove the upper arm from 12. The sponge 42 may be provided with an inclined surface that becomes thinner in the X2 direction so that the upper arm can be easily inserted into the arm band 12.

  The X bell pole 44a and the Y bell pole 44b are reinforcing materials, and are fixed to the air bag 32 by fusion or adhesive. The four X bell poles 44a are fixed so as to extend in the X direction along the folds 52a to 52d on the outer peripheral surface 40b, and the Y bell poles 44b are located in the vicinity of the bending line 48 on the outermost surface 40b closest to the X1 direction. It is fixed so as to extend in the Y direction.

  The air bag 32 is fixed to the inner peripheral surface of the housing 30 with a double-sided tape (not shown) or the like at a place where the X bell pole 44a and the Y bell pole 44b are provided. Accordingly, the portion of the folds 52a to 52d on the outer peripheral surface 40b that is substantially half of the folds 52a to 52d does not act as a fold, but serves as a mark for positioning the X bell pole 44a when the air bag 32 is manufactured and assembled. Can be used.

  According to the four X-bell poles 44a and the double-sided tape fixed at that portion, the X-bell bells 44a and the double-sided tape fixed at that portion can be stably and stably fixed to the housing 30 at substantially equal intervals.

  By the way, when the upper arm is withdrawn after the upper arm is compressed with the air bag 32 and the blood pressure is measured, the air bag 32 has some residual pressure and generates a force to be pulled in the X2 direction together with the upper arm. On the other hand, according to the Y bell pole 44b and the double-sided tape fixed at that portion, the air bag 32 is shifted in the X2 direction because it is provided in the vicinity of the end in the X1 direction with respect to the inner peripheral surface of the housing 30. Can be prevented. The Y bell pole 44b and the double-sided tape for fixing it may be provided at the end in the X2 direction in order to stabilize the air bag 32 when the upper arm is inserted into the armband 12.

  FIG. 5 shows some parts of the armband 12, and the outer housing 30 is shown in phantom lines, and the air bag 32 and the cloth cover 36 are omitted so that the positional relationship of these parts can be easily understood. . Here, the two microphones 34 are arranged at symmetrical positions.

  As shown in FIG. 6, in the armband 12, the outer peripheral surface 40b of the air bladder 32 is fixed to the inner peripheral surface of the housing 30 (as described above, the inner diameter is about 135 mm) and does not spread further outward. The inner peripheral surface 40a of the air bag 32 is moved inward by being pressurized from the pressure pump 18a, and the diameter of the air bag 32 is reduced. When air is supplied to the air bag 32, the air bag 32 can be appropriately pressurized and expanded toward the inner diameter side to compress the periphery of the upper arm. This applied pressure is controlled based on a signal from the pressure sensor 18c (see FIG. 1).

  Unlike the method in which the armband 12 of the sphygmomanometer 10 is wound around the upper arm with a hook-and-loop fastener, it is not necessary to wrap the measurement band around the upper arm, and it is only necessary to insert the upper arm into the armband 12. On the other hand, since the thickness of the upper arm varies considerably depending on the person to be measured, the inflation amount of the air bag 32 for pressing the upper arm must be sufficiently secured. However, when the capacity and the amount of expansion of the air bag 32 are large, folding (including wrinkles and the like) is likely to occur before expansion.

  If there are no special measures, the folds occur randomly and the position and orientation are not specified. Once the crease has occurred, the position and orientation are maintained as they are even if the air bag 32 is inflated by supplying air, so that the upper arm is improperly and non-uniformly pressed, and the microphone 34 is well applied to the upper arm. The blood pressure measurement becomes inaccurate due to lack of contact.

  In the sphygmomanometer 10 according to the present embodiment, since the folds 52a to 52d are provided on the inner peripheral surface 40a of the air bag 32, the folds 52a to 52d are from the initial state assembled to the housing 30 at the manufacturing stage. Bending occurs, and the portion substantially contacts the inner peripheral surface of the housing 30. And the other part in the internal peripheral surface 40a is formed as the bulging parts 56a-56e arrange | positioned with sufficient balance from the initial state.

  When the air bag 32 is inflated by supplying air, the folds 52a to 52d are maintained in the bent state as they are and are substantially in contact with the inner peripheral surface of the housing 30 or in the vicinity thereof. 56e expands toward the inner diameter direction.

  Therefore, regardless of the thickness, the upper arm is appropriately compressed by the bulging portions 56a to 56e in the same manner every time. Further, since the sponges 42 are provided between the folds 52a to 52d, the bulging portions 56b, 56c, and 56d can be easily formed. That is, the bulging portions 56 a to 56 e are formed at appropriate positions by the mutual effect of the folds 52 a to 52 d and the sponge 42.

  Further, the folds 52 a to 52 d are formed on the inner peripheral surface 40 a of the air bag 32, and there are no restrictions on assembly to the housing 30. Therefore, not only the air bag 32 but also the housing 30 can be configured to be simple and lightweight, the outer diameter can be reduced, and there is a degree of freedom in layout and design. In FIG. 6, the cloth cover 36 is omitted so that the shape of the air bag 32 can be seen.

  The folds 52a to 52d can form the bulging portions 56a to 56e by bonding the inner peripheral surface 40a and the outer peripheral surface 40b at the corresponding portions instead of as the folds. There is a concern that an excessive force is applied to the bonded portion. Moreover, the manufacture of the air bag 32 becomes complicated.

  Next, the operation of the sphygmomanometer 10 configured as described above will be described. The person to be measured inserts the upper arm into the arm band 12 as shown in FIG. In the sphygmomanometer 10, since the armband 12 has a separate structure from the main body 16, the measurement subject can perform measurement in a relaxed posture without bending forward, and the armband 12 is provided with a pressurizing pump 18a or the like. Since there is no lightweight configuration, it is not a burden on the person to be measured, blood pressure does not increase, and accurate blood pressure can be measured.

  In the sphygmomanometer 10, the calculation unit 20 performs overall control. The arithmetic unit 20 starts measuring blood pressure based on the operation of the operation button 24 after a predetermined power switch is turned on. In the measurement of blood pressure, first, air is supplied to the air bag 32 to be inflated under the action of the pressurizing pump 18a, and the circumference of the upper arm is compressed. At this time, as described above, since the air bag 32 is provided with the folds 52a to 52d, the bulging portions 56a to 56e divided into the folds 52a to 52d bulge toward the inner diameter direction to Can be properly squeezed.

  The computing unit 20 measures blood pressure by the Korotkoff method. The blood pressure measurement by the Korotkoff method will be schematically described. The air bag 32 is pressurized until the blood flow in the artery disappears while monitoring the pressure signal of the pressure sensor 18c. Next, the exhaust valve 18b is operated to reduce the pressure in the air bladder 32. Eventually, the blood flow in the artery is restarted and the K sound is generated by the microphone 34, and the pressure at this time is stored as the maximum blood pressure. Since the microphone 34 is provided at a symmetrical position, the K sound can be measured regardless of whether the measurement upper arm is the right hand or the left hand. When the signals from the two microphones 34 are handled as, for example, added values, the processing becomes easy. Of course, you may process as an individual signal. The noise of the signal from the microphone 34 is canceled by the noise sensor 35 to improve the measurement accuracy.

  If the pressure in the air bag 32 is further reduced at about 2 mmHg / sec, the K sound will eventually disappear, and the pressure at this time is stored as the minimum blood pressure. The measured maximum blood pressure and minimum blood pressure are displayed on the display unit 22 in units of mmHg or Pa. The display unit 22 may display additional information such as a pulse and a pulse pressure.

  When the measurement of the minimum blood pressure is completed, the exhaust valve 18b is fully opened and the pressure of the air bag 32 is released. However, it takes some time until the pressure in the air bag 32 becomes zero. The measurement subject may try to remove the upper arm from the armband 12 before the pressure in the air bag 32 becomes completely zero, and the residual pressure generates a force for the air bag 32 to be pulled in the X2 direction by the upper arm. . At this time, in the sphygmomanometer 10, since the inclined surface 42a is provided on the sponge 42, it is easy to remove the upper arm. Further, since the Y bell pole 44b is provided on the most X1 side in the air bag 32, the air bag 32 can be prevented from being caught in the X2 direction while adhering to the upper arm.

  As described above, according to the sphygmomanometer 10 according to the present embodiment, the inner circumferential surface 40a of the air bladder 32 extends in the vertical direction (X direction) in which the upper arm is inserted, and has a thickness other than that. Since the four folds 52a to 52d having different (or hardness) are included, the location where the inner peripheral surface 40a is folded is specified. With the folds 52a to 52d as sections, the bulging portions 56a to 56e are formed at appropriate positions so that the upper arm can be appropriately pressed. If a sensor such as the microphone 34 is provided in this portion, the measurement accuracy is improved because the sensor is in close contact with the upper arm. The folds 52 a to 52 d have a simple configuration and have no structural influence on the housing 30.

  Further, the outer diameter of the housing 30 in which the air bag 32 is accommodated can be reduced, and the weight can be reduced.

  The folds 52a to 52d are thin and have a simple configuration as compared with other portions. However, the creases 52a to 52d may be thicker than other portions depending on the design conditions. The folds 52a to 52d are four, and the upper arm can be stably pressed from four directions (for example, up, down, left, and right).

  The number of folds is four corresponding to the three sponges 42, but is not limited to four and may be three or five or more. In this case, it is preferable that the air bag 32 is installed so that the bulging portion is located in a portion directly below where the load due to the weight of the upper arm is the most when installed in the housing 30.

  Since the sponge 42 is provided at the location where the microphone 34 is provided inside the air bag 32, the microphone 34 is more easily adhered to the upper arm. Since the sponge 42 is provided with the inclined surface 42a which becomes thinner outward along the X direction, the upper arm can be easily pulled out. If the inclined surface 42a is also provided on the opposite side, it is easy to insert the upper arm.

  Further, the pressurizing unit 18, the calculation unit 20, and the display unit 22 are provided in the main body 16 provided separately from the housing 30 via the tube 14. Therefore, the measurement subject can measure blood pressure in a free posture not restricted by the position of the main body 16, and the measurement accuracy is improved, and the armband 12 is lightweight and compact and easy to handle. Moreover, it is not necessary to wrap around an upper arm like a hook-and-loop type, and it is only necessary to insert the upper arm. Since the armband 12 is separated from the table on which the main body 16 is placed, the measurement accuracy is improved without being affected by vibration of the table.

  A conventional table-mounted arm-in sphygmomanometer needs to have a high-strength configuration in consideration of putting weight on the armband when the upper arm is inserted. On the other hand, no weight is applied, and it is not necessary to unnecessarily increase the strength of the armband 12.

  The sphygmomanometer 10 is a Korotkoff method, but may be an oscillometric method that is a blood pressure measurement method based on pulse wave vibration without using the microphone 34.

  Next, regarding the manufacturing method of the sphygmomanometer 10, a manufacturing method of the air bag 32 will be described in particular.

  First, in step S1 of FIG. 8, a portion that becomes the resin sheet 40 is cut out from the urethane sheet.

  In step S <b> 2, as shown in FIG. 9, the resin sheet 40 is heated by the high-frequency welder 100 to form four thin folds 52 a to 52 d in the X direction. In the high frequency welding machine 100, the high frequency heating coil 102 is vibrated by a predetermined vibration source to pressurize the resin sheet 40 placed on the cradle 104. Thereby, the resin sheet 40 is heated and thermally deformed to become thin. When the high-frequency heating coil 102 is removed, as shown in FIG. 10, the resin sheet 40 is formed with a fold line 52a that is slightly thinner than other portions. Similarly, the folds 52b to 52d are simply formed by the high-frequency welder 100.

  In step S3, the X bell pole 44a, the Y bell pole 44b, the three sponges 42 and the nozzle 50 are attached to the resin sheet 40 at predetermined positions (see FIG. 4).

  In step S <b> 4, the pocket 46 is formed using the high frequency welder 100.

  In step S5, as shown in FIG. 11, the resin sheet 40 is bent along a bending line 48 which is a bending position in the Y direction. The part of the folding margin 40c is also folded back.

  In step S <b> 6, high-frequency welding is performed on the periphery of the resin sheet 40 other than the bending line 48 using the high-frequency welding machine 100 to form a bag shape. The obtained air bag 32 is rolled in the Y direction and assembled to the housing 30 in a predetermined assembly process.

  Thus, according to the manufacturing method of the sphygmomanometer 10 according to the present embodiment, the air bag 32 can be obtained simply and inexpensively. In particular, the formation process of the folds 52a to 52d in step S3 and the surrounding welding process in step S6 are high frequency weldings, respectively, and can be performed by a single factory or one worker. If step S3 and step S6 are performed by the single high-frequency welding machine 100, the procedure is simplified and the facility cost can be suppressed. The obtained air bag 32 can be folded at an appropriate position by the folds 52a to 52d.

  The sphygmomanometer and the manufacturing method thereof according to the present invention are not limited to the above-described embodiments, and various configurations can be adopted without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 10 ... Blood pressure monitor 12 ... Arm band 14 ... Tube 16 ... Main body 18 ... Pressurizing means 18a ... Pressurizing pump 18b ... Exhaust valve 18c ... Pressure sensor 30 ... Housing 32 ... Air bag 34 ... Microphone 40 ... Resin sheet 40a ... Inner circumference Surface 40b ... outer peripheral surface 42 ... sponge 42a ... inclined surface 44a ... X bell polen 44b ... Y bell polen 52a-52d ... fold 56a-56e ... bulge part 100 ... high frequency welder

Claims (10)

A cylindrical housing into which the upper arm of the person to be measured is inserted, and an armband provided in the housing and provided with an air bag for compressing the upper arm of the person to be measured inserted therein;
Pressurizing means for supplying air to the air bag;
Have
The bladder may have a plurality of folds extending in a longitudinal direction in which the upper arm is inserted into the inner circumferential surface,
Further, provided on the inner peripheral surface of the air bag, located therebetween a plurality of said folds, sphygmomanometer according to claim Rukoto to have a microphone to detect the Korotkoff sounds. The sphygmomanometer according to claim 1,
The sphygmomanometer, wherein four folds are provided at substantially equal intervals on the inner peripheral surface of the air bag. The sphygmomanometer according to claim 1 or 2,
A sphygmomanometer characterized in that the fold has a thin wall structure as compared with other portions. The blood pressure monitor according to any one of claims 1 to 3,
The air bag is a bag formed by welding around the resin sheet,
The sphygmomanometer, wherein the fold is formed by heating the resin sheet. The sphygmomanometer according to any one of claims 1 to 4 ,
A blood pressure comprising a cushioning material provided on an inner peripheral surface of the air bag, and having an inclined surface that is positioned between the plurality of folds and becomes thinner toward the exit direction of the upper arm of the subject. Total. The sphygmomanometer according to any one of claims 1 to 5 ,
A calculation unit for obtaining the blood pressure of the measurement subject;
A display unit for displaying the blood pressure obtained by the calculation unit;
A tube connecting the housing and the pressurizing means, and through which air flows;
Have
The sphygmomanometer, wherein the pressurizing means, the calculation unit, and the display unit are provided in a main body unit that is separate from the armband via the tube. The sphygmomanometer according to any one of claims 1 to 6 ,
A sphygmomanometer, comprising a reinforcing member that is provided on an outer peripheral side of the air bag, is located at a position corresponding to the fold, and extends in a vertical direction. In the sphygmomanometer according to any one of claims 1 to 7 ,
A sphygmomanometer, comprising a reinforcing member that is provided on the outer peripheral side of the air bag, is located on the inlet side of the upper arm of the person to be measured, and extends in the circumferential direction. A cylindrical housing into which the upper arm of the person to be measured is inserted, and an armband provided in the housing and provided with an air bag for compressing the upper arm of the person to be measured inserted therein;
Pressurizing means for supplying air to the air bag;
A method of manufacturing a sphygmomanometer having
Heating the resin sheet and forming a plurality of folds in the longitudinal direction, which is the direction of insertion;
A step of providing a cushion material having an inclined surface that becomes thinner toward the exit direction of the upper arm of the person to be measured at a position between the plurality of folds;
Forming the air bag by bending the resin sheet at a lateral bending position and welding the periphery into a bag shape;
A method of manufacturing a sphygmomanometer, comprising: In the manufacturing method of the blood pressure meter according to claim 9,
A method of manufacturing a sphygmomanometer, comprising a step of providing a pocket for a microphone between the plurality of folds on the inner circumferential surface side of the air bag.

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