JP2006271405A - Hemadynamometer provided with cuff belt winding mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hemadynamometer provided with a cuff belt winding mechanism, capable of keeping the diameter of an insertion hole in an initial state large, smoothly winding a cuff belt around an arm or the like, being simply constituted and made into a product at a low cost, eliminating the risk of damaging the cuff belt and facilitating handling. <P>SOLUTION: The hemadynamometer provided with the cuff belt winding mechanism comprises: a drum 2 having an arm insertion hole 5; a cuff spring 120 with elastic restoration force in a diameter-enlarging direction, whose proximal end is fixed to the drum as a fixed end A and distal end is made movable along the inner periphery of the drum as a movable end B, and which is to be reduced in the diameter as a whole by moving the movable end from an initial diameter-enlarged state; a bladder 130 at the inner periphery of the cuff spring; and the cuff belt 110 for reducing the diameter of the cuff spring by pulling the movable end of the cuff spring toward a position close to the fixed end. In the cuff spring, spring power is changed from the fixed end to the movable end such that the spring power at a part near the fixed end is weak and the spring power at a part near the movable end is strong. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a so-called arm-in type sphygmomanometer equipped with a cuff belt winding mechanism.

  Conventionally, when a subject passes the arm around a cuff band wound in a cylindrical shape and presses the switch, the cuff band automatically wraps around the arm and blood pressure measurement starts (an arm-in sphygmomanometer) )It has been known.

  As a type of sphygmomanometer equipped with this type of automatic cuff band winding mechanism, the cuff band is reduced in diameter by moving both ends of a cylindrically wound cuff band and wound around an arm (for example, see Patent Document 1) ) And a cuff band wound in a cylindrical shape by fixing one end and moving the other end to reduce the diameter of the cuff band and wind it around the arm (for example, see Patent Document 2).

  In the former type, both ends of the cuff belt are pulled and moved simultaneously, so that the cuff belt can be wound in a short time, but the power load at the time of winding is large. On the other hand, in the latter type, since the power load is small, there is little risk of malfunction such as the load being too large and stopping halfway.

JP 2004-254882 A JP 2000-107140 A

  By the way, the conventional latter type of blood pressure monitor (a type in which one end of the cuff belt is fixed and the other end is moved and wound around the arm) employs a system in which the end portion of the cuff belt is directly wound by a winding roller. As a result, the length of the cuff belt becomes longer, and the winding portion becomes larger, which is an obstacle to downsizing. In addition, winding may not be performed smoothly, and problems such as stopping on the way may occur. In addition, although the initial diameter expansion state is secured by returning the cuff spring built in the cuff belt, the diameter of the insertion hole for inserting the arm does not increase, and it may be impossible to use a person with a thick arm there were. Further, there is a case where a cover for protecting the cuff belt is provided, but even in that case, it is merely a cover, and there is a possibility that the cuff belt may be damaged when carrying it.

  In consideration of the above circumstances, the present invention can keep the diameter of the insertion hole in the initial state large, can smoothly wrap the cuff belt around the arm, etc., and can be commercialized at a low cost with a simple configuration. Another object of the present invention is to provide a sphygmomanometer equipped with a cuff band winding mechanism that is easy to handle without fear of damage to the cuff band.

  The invention of claim 1 comprises a cylindrical drum having a rigid structure having an insertion hole for inserting a measurement site such as an arm, and a hard sheet material having flexibility, along the inner periphery of the drum. And has an elastic restoring force in the diameter increasing direction, is fixed at one point in the circumferential direction of the drum as a fixed end, and has a distal end at the inner periphery of the drum as a movable end. The cuff spring is arranged on the inner periphery of the cuff spring and the cuff spring whose diameter is reduced as a whole by moving the movable end along the inner periphery of the drum from the initial diameter-expanded state. A bladder wound around a measurement site such as the arm by the diameter of the spring; and a retracting member for reducing the diameter of the cuff spring by pulling the movable end of the cuff spring toward a position close to the fixed end. The And wherein the Rukoto.

  The invention of claim 2 is a sphygmomanometer equipped with the cuff band winding mechanism according to claim 1, wherein the cuff spring has a weak spring force closer to the fixed end and closer to the movable end. The spring force is changed from the fixed end to the movable end so that the spring force becomes stronger.

  The invention of claim 3 is a sphygmomanometer comprising the cuff belt winding mechanism according to claim 2, wherein the cuff spring is made of a single resin sheet having a hole formed in the surface, and the surface The spring force is varied by making the distribution of the punched holes formed therein or the size of the punched holes different between the side close to the fixed end and the side close to the movable end.

  The invention of claim 4 is a sphygmomanometer comprising the cuff band winding mechanism according to any one of claims 1 to 3, wherein the retracting member has a tip portion close to a fixed end of the cuff spring. It is drawn out of the drum through a drawing outlet provided in the hood, and a platform for placing a measurement site such as an arm is provided so as to cover the upper side of the drawing outlet.

  The invention of claim 5 is a sphygmomanometer comprising the cuff wrapping mechanism according to claim 4, wherein the sphygmomanometer is positioned on the inner periphery of the drum on the inner periphery side of the bladder and is made of a flexible material such as cloth. A cylindrical cuff cover is provided, and an insertion hole for inserting a measurement site such as the arm is secured in the cuff cover, and the measurement site such as an arm on the platform is provided on the lower surface of the cuff cover. A thin plastic sheet material that is harder and more flexible than the cuff cover is attached to prevent the measurement site from hanging down or the cuff cover itself from hanging down. .

  A sixth aspect of the present invention is a sphygmomanometer including the cuff band winding mechanism according to any one of the first to fifth aspects, wherein the retracting member is disposed on an outer periphery of the cuff spring, and has a base end portion. Is fixed together with the fixed end of the cuff spring, the intermediate part is engaged with the movable end of the cuff spring, and the tip part is pulled out of the drum through the outlet provided near the fixed end of the cuff spring. It consists of a cuff belt made of a soft film.

  A seventh aspect of the present invention is a sphygmomanometer having the cuff belt winding mechanism according to the sixth aspect, wherein the cuff belt is engaged with the movable end of the cuff spring and is slid on the inner periphery of the drum. Protruding pieces that receive a guide action when in contact with each other are provided.

  The invention of claim 8 is a sphygmomanometer comprising the cuff band winding mechanism according to claim 6 or 7, wherein the base end portion of the bladder together with the fixed end of the cuff spring and the base end portion of the cuff belt. In addition to being fixed, a first engagement slit is provided at the distal end of the bladder, while an insertion tongue with a second engagement slit is provided at the movable end of the cuff spring. The leading end of the bladder is inserted by inserting the leading end of the cuff belt through the second engaging slit of the insertion tongue piece from the joint slit to the base engaging portion, and then the second engaging slit of the inserting tongue piece. In addition to being engaged with the movable end of the cuff spring, the middle portion of the cuff belt is engaged with the movable end of the cuff spring.

  The invention of claim 9 is a sphygmomanometer comprising the cuff band winding mechanism according to any one of claims 6 to 8, wherein the tip of the cuff belt drawn out of the drum from the outlet is the sphygmomanometer. It is wound around a winding roller provided outside the drum, and a cuff spring is driven via a cuff belt by the rotation of the winding roller.

  A tenth aspect of the present invention is a sphygmomanometer including the cuff band winding mechanism according to any one of the first to ninth aspects, wherein the drum is provided with a slit along the moving direction of the movable end of the cuff spring. Through the slit, an air tube is connected to the connection port of the bladder from the outside of the drum, and a friction reducing sleeve is provided on the outer periphery of the air tube to reduce friction with the opening edge of the slit. It is characterized by.

  The invention of claim 11 is a sphygmomanometer including the cuff wrapping mechanism according to any one of claims 1 to 10, wherein the drum is a front surface as a complete thin-walled cylindrical structure having a continuous entire circumference. The sphygmomanometer is attached to the inner side of a substantially L-shaped sphygmomanometer body, and the side part opposite to the sphygmomanometer body is exposed to the outside as it is.

  The invention of claim 12 is a sphygmomanometer including the cuff belt winding mechanism according to claim 11, wherein the drum is formed into a cylindrical shape by combining the same half-cylinder drum halves. It is characterized by being.

  According to the first aspect of the present invention, the cuff spring arranged along the inner periphery of the cylindrical drum is always urged in the diameter-expanding direction by its own restoring force. In the following, the diameter of the insertion hole for inserting the arm) will be kept large, and even a person with a large arm can easily insert it. In addition, since the movable end of the cuff spring can be moved while using the inner periphery of the cylindrical drum as a guide, the cuff spring can be smoothly reduced in diameter and expanded, and the load for driving it is small. I'll do it. Further, since the cuff spring can be smoothly reduced in diameter, the cuff spring and the bladder (these portions may be referred to as “cuff belt” in the following) can be smoothly wound around the arm. Further, since the bladder is wound by a combination of the cylindrical drum and the cuff spring, the configuration is simple and compact, and the cost can be reduced. Also, since the drum covers the cuff spring and bladder, there is no risk of damaging them when carrying them.

  According to the invention of claim 2, the cuff spring is difficult to bend on the side close to the movable end and is easily bent on the side close to the fixed end. Will be reduced in diameter. Therefore, the diameter of the cuff spring is reduced so as to envelop the arm greatly, and the cuff belt (cuff spring and bladder) can be smoothly wound around the arm.

  By the way, when the spring force setting is reversed (the side near the movable end is easy to bend and the side close to the fixed end is difficult to bend), the soft movable end is bent first and the movable end becomes the arm. It will move in the form that hits. For this reason, the diameter reduction is not smooth, smooth winding cannot be performed, and the winding load may increase.

  A good example of the winding action is that the cuff spring's movable end moves and winds around the arm while being guided by the inner surface of the drum. Become. Also, it will not pinch the flesh of the arm. In such a point, it can be said that the effect of the invention of claim 2 is great.

  According to the invention of claim 3, the spring force of the cuff spring can be adjusted with almost no cost since the spring force can be changed simply by determining how to provide the hole. .

  According to the invention of claim 4, since the platform is provided so as to cover the top of the pull-out port, the arm meat is sandwiched by the pull-out member, or the sleeve is pulled into the pull-out port together with the pull-in member. Can be prevented, and smooth cuff wrapping can be performed.

  According to the invention of claim 5, a hard thin sheet is attached to the cuff cover to prevent the arm flesh from hanging down and the cuff cover itself from drooping. Therefore, when the cuff belt is wound, the movable end of the cuff spring holds the arm flesh. Even if it comes close to the sandwiching position, it can be avoided. That is, when the movable end of the cuff spring hits the portion to which the sheet is attached, the cuff spring moves along the sheet and does not sandwich meat or the like. Accordingly, the cuff belt can be smoothly wound.

  Incidentally, if the width of the platform is increased, it is possible to avoid the situation of sandwiching the meat of the arm, etc. However, if the width of the platform is increased, the range of wrapping the arm with the bladder is reduced accordingly, so the condition is not good. Accordingly, in the invention of claim 5, the cuff cover is provided with a soft thin sheet to the extent that the compression performance by the bladder is not affected while the width of the platform is minimized and the bladder is wound around the entire circumference of the arm as much as possible. By doing so, the performance is improved. When a sheet is provided on the cuff cover, there is a method of sticking with an adhesive or the like, but it is preferable to insert it with a pocket.

  According to the sixth aspect of the present invention, the cuff spring is pulled in by the cuff belt having the base end portion fixed together with the fixed end of the cuff spring. And the strength of the cuff belt can be increased. In addition, since the cuff belt covers the outer periphery of the cuff spring, the cuff spring is flexibly bent and the cuff belt moves smoothly when wound.

  According to the invention of claim 6, since the projecting piece provided on the cuff belt made of a soft film is guided in sliding contact with the inner periphery of the drum, the portion made of this soft film will serve as a cushion, The movable end of the cuff spring is moved smoothly.

  According to the invention of claim 8, the engagement of the bladder, the cuff spring, and the cuff belt can be easily performed by simply adopting a method of inserting the insertion tongue piece and the belt into the slit in order, and the assemblability is good. The configuration can be simplified.

  According to the ninth aspect of the present invention, the cuff band can be wound only by rotating the winding roller, so that a compact configuration can be achieved.

  According to the invention of claim 10, the movement of the air tube accompanying the movement of the bladder can be made smooth, and the operation load can be reduced. It can also protect the air tube.

  According to the eleventh aspect of the invention, since the drum is configured as a complete cylindrical structure having a continuous entire circumference, it is possible to reduce the thickness while having high strength. Moreover, since the thinned drum is exposed as it is on the opposite side to the main body of the sphygmomanometer, only a thin portion is present in front of the subject's eyes at the time of measurement, and an extra space can be created. That is, at the time of measurement, since the thickness of the drum portion is small, there is an advantage that it does not get in the way. Further, by reducing the thickness, the diameter of the drum can be increased with respect to the size of the sphygmomanometer body, and a person with a thicker arm can be inspected. In addition, since a dimensional margin is created by thinning, the degree of freedom in design is also increased.

  According to the twelfth aspect of the present invention, since the cylindrical drums are formed by combining the drum halves having the same shape, the cost can be reduced. In addition, since the drum has a half structure, it is easy to assemble, and it is possible to fix the cuff belt with the fixed end sandwiched between the mating parts, which eliminates the need for another fixing means and further improves the assemblability. Can be planned.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 is a schematic perspective view showing the appearance of a blood pressure monitor of the embodiment, FIG. 2 is a view showing the principle of winding a cuff band, FIG. 3 is a front view of a simplified blood pressure monitor, and FIG. FIG. 5 is a perspective view showing the main part configuration with the exterior covers removed, and FIG. 6 is a perspective view showing the main part configuration viewed from another direction. 7 is a perspective view showing an assembled state of a drum that is a component of the blood pressure monitor of the embodiment, FIG. 8 is an exploded perspective view of the drum, and FIG. 9 is a cuff belt assembly that is a component of the blood pressure monitor of the embodiment. FIG. 10 is a plan view of the cuff belt constituting the cuff belt, FIG. 11 is a plan view of the cuff spring, FIG. 12 is a perspective view showing the construction of the cuff belt, the cuff spring and the bladder constituting the cuff belt, and FIG. FIG. 14 is an explanatory view of the spring force of the cuff spring, FIG. 15 is an operation explanatory view when winding the cuff belt, FIG. 16 is a configuration diagram of the cuff cover, and FIG. 17 is a cuff cover when winding around the arm. The figure which shows the relationship of a cuff spring, FIG. 18 is a perspective view of the insertion part of an air tube.

  As shown in FIGS. 1 to 3, the sphygmomanometer 1 includes a rigid cylindrical plastic drum 2 having an insertion hole 5 for inserting an arm M, and a flexible hard sheet material. It is arranged in a curved state along the inner periphery 2a of the drum 2, has an elastic restoring force in the diameter increasing direction, and has a base end as a fixed end A at one point in the circumferential direction of the drum 2 (lower end portion) ), The tip is movable as the movable end B along the inner circumference of the drum 2, and the movable end B is moved along the inner circumference of the drum 11 from the initial diameter-expanded state, The cuff spring 120 to be reduced in diameter, the bladder (air bag) 130 disposed around the inner periphery of the cuff spring 120 and wound around the arm M by the reduced diameter of the cuff spring 120, and the movable end B of the cuff spring 120 to the fixed end A Pull toward the position close to The Rukoto, and a Kafuberuto 110 as pulling member reduced in diameter the cuff spring 120.

  The drum 2 is attached to the inside of the sphygmomanometer body 3 having a substantially L-shape when viewed from the front as a complete thin-walled cylindrical structure having a continuous entire circumference, and the side opposite to the sphygmomanometer body 3 is left outside. Exposed. As shown in FIG. 8, the drum 2 is formed in a cylindrical shape by combining the half cylinders 2 </ b> A and 2 </ b> A having the same shape.

  Each drum half 2A includes a semi-cylindrical peripheral wall 21, reinforcing ribs 22 on the outer periphery thereof, flanges 23 formed at both ends in the circumferential direction, an outlet 24 for pulling out the cuff belt 120, an air tube A fixing groove 27 for sandwiching the attachment end 119 of the cuff belt 110, the attachment end 129 of the cuff spring 120, and the attachment end 139 of the bladder 130 between the insertion slit 25 and the flange 23 when combined, and the cuff cover 170 And a decorative cover 29 that covers the outer periphery of the exposed drum half 2A. The flanges 23 of these drum halves 2A are aligned with each other. The cylindrical drum 2 is configured by coupling with screws.

  As shown in FIGS. 1, 5, and 6, the sphygmomanometer body 3 having an L shape in front view includes a resin body housing 3 </ b> A, a resin cover 301 attached to the outside thereof, and an upper portion of the cover 301. An equipped operation panel 302, an operation switch 303 equipped on the operation panel 302, a display 304, and the like are provided. The blood pressure monitor main body 3 is equipped with an air pump 70, an air tank 71, a pressure sensor 72, an exhaust control valve, and the like. In addition, a base 7 capable of adjusting the inclination of the sphygmomanometer 1 is provided at the bottom of the sphygmomanometer body 3.

  The drum 2 is attached to the inner side of the sphygmomanometer body 3 with the axis line oriented in the horizontal direction, and the outlet 24 is located at the inner bottom of the drum 2. A resin arm mount 40 is provided so as to cover the outlet 24, and a cushion material 41 is attached to the upper surface of the arm mount 40.

  As shown in FIGS. 7 and 8, a cuff belt assembly 100 is disposed on the inner periphery of the drum 2. The cuff belt assembly 100 includes a cuff belt 110, a cuff spring 120, and a bladder 130. Each of the mounting ends 119, 129, and 139 (see FIG. 12) is sandwiched between flanges 23 and 23 and screwed. By tightening the flanges 23 and 23, the base end portion is fixed to one point on the circumference of the drum 2.

  The cuff belt 110 shown in FIGS. 10 and 12 corresponds to a pull-in member that draws the movable end B of the cuff spring 120, is made of a soft resin film, and has a wide substrate portion 111 with a base end portion serving as a mounting end 119. At the front end of the tape, an elongated retracting tape portion 112 is provided. In addition, small blade-shaped projecting pieces 113 are directed toward the front end through the grooves 114 on both sides of the front end of the substrate portion 111 (the portion positioned at the movable end A of the cuff spring 120) located in the middle of the entire length. It is extended. These protrusions 113 are portions that receive a guide action by slidingly contacting the inner periphery 2 a of the drum 2. Further, slight concave portions 116 are provided on both side edges of the intermediate portion in the length direction of the substrate portion 111. This portion is a portion into which a band 136 of a bladder 130 described later fits. In addition, an opening 115 for exposing the connection port 135 of the bladder 130 is opened at a predetermined portion of the substrate unit 111.

  The cuff spring 120 shown in FIGS. 11 and 12 is made of a resin sheet that is harder and more flexible than the cuff belt 110, and has a rectangular substrate portion 121 with a base end portion serving as a mounting end 129, and a leading edge thereof. And an insertion tongue piece 122 having a second engagement slit 123 that is set narrower than the width of the substrate portion 121. The cuff spring 120 is made of a sheet having a certain thickness, and is difficult to bend with a small curvature. Therefore, a slit 129s for facilitating bending is provided at the base portion of the attachment end 129. Further, on both side edges of the intermediate portion in the length direction of the substrate portion 121, concave portions 126 having the same role as in the case of the cuff belt 110 are provided. In addition, an opening 125 for exposing the connection port 135 of the bladder 130 is opened at a predetermined portion of the substrate unit 121.

  In addition, the cuff spring 120 has a plurality of punched holes 128a to 128c as characteristic elements. These punched holes 128a to 128c are provided to impart a distribution of spring force to the cuff spring 120 made of one sheet material. In this case, as shown in FIG. 14, the punch holes 128a to 128c have a weak spring force near the fixed end A (attachment end 129) (soft) and a strong spring force near the movable end B (rigid). ) So that their distribution and size are different.

  Specifically, on the fixed end A side, three rectangular holes 128c are arranged side by side so as to increase the total area. On the movable end B side, two elongated slit-shaped holes 128a and 128b are arranged side by side. It is desirable to set the dimensions such as the width and length of the holes 128a to 128c in consideration of the overall balance.

  A bladder 130 shown in FIG. 12 has an air reservoir space 138 formed in a rectangular bag 131 made of resin or rubber having a base end portion serving as a mounting end 139, and has a first engagement slit at the tip. An engaging projection 132 with 133 is provided. In addition, the connection port 135 is provided on the outer peripheral surface when being mounted, and the band 136 is provided in the middle portion in the length direction.

  In order to configure the cuff belt assembly 100 by combining the cuff belt 110, the cuff spring 120, and the bladder 230, first, as shown by an arrow A-1 in the drawing, the band 136 of the bladder 130 is attached to the cuff spring 120 and the cuff belt. The substrate portions 121 and 111 of 110 are submerged, and the substrate portions 121 and 111 of the cuff spring 120 and the cuff belt 110 are overlapped on the bladder 130 in this order.

Next, as shown by an arrow A-2, the insertion tongue piece 122 at the tip of the cuff spring 120 is inserted into the first engagement slit 133 of the bladder 130 from the second engagement slit 123 to the root portion, Then, as indicated by an arrow A-3, the tip of the retractable tape portion 112 of the cuff belt 110 is inserted through the second engagement slit 123 of the insertion tongue piece 122.
As a result, as shown in FIG. 13, the distal end portion of the bladder 130 is engaged with the movable end B of the cuff spring 120, and the intermediate portion of the cuff belt 110 is engaged with the movable end B of the cuff spring 120.

  In the subsequent step, the tip of the air tube 80 is connected to the connection port 135 of the bladder 130 through the openings 115 and 125 of the cuff belts 110 and 120 as indicated by an arrow A-4. Note that the tip of the insertion tongue piece 122 of the cuff spring 120 is bounced as it is, so it is preferable that the cuff spring 120 is attached to the surface of the cuff belt 110 with a protective tape 140 as necessary.

  When the cuff belt assembly 100 assembled in this way is attached to the drum 2, the cuff belt 110 is assembled on the outer periphery of the cuff spring 120 and the bladder 130 is positioned on the inner peripheral side of the cuff spring 120. In this state, the cuff belt 110 has a proximal end mounting end 119 fixed to the drum 2 together with the fixed end B of the cuff spring 120, an intermediate portion engaged with the movable end B of the cuff spring 120, and a distal end portion of the cuff belt 110. The spring 120 is drawn out of the drum 2 through a drawing outlet 24 provided near the fixed end A of the spring 120.

  As shown in FIG. 2, the tip end portion of the cuff belt 110 drawn out of the drum 2 is wound around a winding roller 90 provided outside the drum 2, and the cuff belt 90 is rotated by the rotation of the winding roller 90. The movable end B of the cuff spring 120 can be driven via 110. Note that a motor (not shown) is connected to the winding roller 90 via a speed reduction means such as a gear.

  By the way, the arm mounting base 40 described above is provided so as to cover the upper side of the outlet 24, and the lower surface of the arm M is held at a position higher than the outlet 24.

  FIG. 16 shows the configuration of the cuff cover 170. The cuff cover 170 has a cylindrical shape made of a flexible material such as cloth, and is disposed on the inner periphery of the drum 2 so as to be positioned on the inner periphery of the bladder 130. The cuff cover 170 has a cylindrical portion 171 that secures the insertion hole 5 for inserting an arm, and flanges 172 with flexible cores provided at both ends thereof. A slit 173 for inserting the mounting table 40 is provided. In addition, a pocket 174 is provided in a part on the outer peripheral side of the cylindrical portion 171 (a portion on the lower side of the arm when set), and a thin plastic sheet 175 that is somewhat rigid and flexible is accommodated therein. Yes. As shown in FIG. 17A, the sheet 175 has a case where a part Mn of the meat of the arm M may sag when the arm M is placed on the arm mount 40. This is to prevent the portion from hanging down and the cuff cover 170 itself from hanging down.

  Further, after the drum 2 is assembled and assembled to the blood pressure monitor main body 3, the air tube 80 is connected to the connection port 135 of the bladder 130 through the slit 25 of the drum 2. At this time, as shown in FIG. A friction reducing sleeve 81 for reducing friction with the opening edge of the slit 25 is provided on the outer periphery of the tube 80.

  Then, the bladder 130 is connected to the air pump 70, the pressure sensor 71, the exhaust control valve, and the like built in the sphygmomanometer body 3 through the air tube 80. The sphygmomanometer body 3 has a built-in control arithmetic circuit, and the blood pressure is measured by controlling the air pump or the like with this control arithmetic circuit.

Next, the operation will be described with reference to FIGS.
When the arm M is inserted into the insertion hole 5 and the operation switch 303 is operated, a motor (not shown) is activated, and the winding roller 90 rotates in the direction of arrow F1, as shown in FIG. Taken. As a result, the movable end B of the cuff spring 120 moves and the diameter of the cuff spring 120 is reduced, whereby the cuff spring 120 and the bladder 130 are wound around the arm M.

During this operation, the movable end B of the cuff spring 120 is guided along the inner periphery of the drum 2, so that the cuff spring 120 is smoothly reduced in diameter and wound around the arm M.
In particular, in the sphygmomanometer 1, the cuff spring 120 is less likely to bend on the side close to the movable end B and is more likely to bend on the side closer to the fixed end A. The cuff spring 120 is reduced in diameter. Therefore, the diameter of the cuff spring 120 is reduced so as to wrap the arm M greatly, and the winding of the cuff band (the cuff spring 120 and the bladder 130) around the arm M is performed smoothly.

  Incidentally, when the setting of the spring force of the cuff spring 120 is reversed (the side close to the movable end B is easy to bend and the side close to the fixed end A is difficult to bend), the soft movable end B is bent first. As a result, the movable end B moves in such a way as to hit the arm M. For this reason, the diameter reduction is not smooth, smooth winding cannot be performed, and the winding load may increase.

  However, in this sphygmomanometer 1, as a good example of the winding operation, the movable end B of the cuff spring 120 moves and winds around the arm M while being guided by the inner surface 2 a of the drum 2. You can make it. Therefore, the load is small, the winding can be performed smoothly, and the meat of the arm M is not pinched.

  Further, in the case of the cuff spring 120, the spring force can be easily changed by simply determining how to form the holes 128a to 128c, so that the spring force of the cuff spring 120 can be reduced with little cost. Adjustments can be made.

  Further, in the sphygmomanometer 1, since the platform 40 with the cushion 41 is provided so as to cover the top of the outlet 24, it is possible to prevent the meat and cuffs of the arm M from being drawn into the outlet 24. In addition, since a hard thin sheet 175 is attached to the cuff cover 170 to prevent the arm M from sagging and the cuff cover 170 itself from sagging, as shown by the two-dot chain line in FIG. Even when the movable end B of the cuff spring 120 approaches the position sandwiching the slack portion Mn of the meat of the arm M at the time of winding, it can be avoided as shown in (b). That is, when the movable end B of the cuff spring 120 hits the portion to which the sheet 175 is attached, the cuff spring 120 moves along the sheet 175 and does not sandwich meat or the like. Accordingly, the cuff belt can be smoothly wound.

  Incidentally, if the width of the mounting base 40 is increased, the situation where the meat of the arm M is sandwiched can be avoided. However, if the width of the mounting base 40 is increased, the range of wrapping the arm M by the bladder 130 is reduced accordingly. not good. Therefore, in the sphygmomanometer 1, the width of the mounting base 40 is minimized, and the thin sheet 175 that is so soft as not to affect the compression performance by the bladder 130 is provided while the bladder 130 is wound around the entire circumference of the arm M as much as possible. By providing the cuff cover 170, the performance is improved.

  Further, in the sphygmomanometer 1, a protruding piece 113 is provided at an intermediate portion of the soft film-made cuff belt 110, and the protruding piece 113 is guided in sliding contact with the inner periphery 2a of the drum 2. The portion made of the soft film serves as a cushion, and the movement of the movable end B of the cuff spring 120 can be made smoother.

  Further, in the sphygmomanometer 1, since the cuff spring 120 arranged along the inner periphery of the cylindrical drum 2 is always urged in the diameter increasing direction by its own restoring force, the arm M is inserted. The diameter of the insertion hole 5 can be kept large, and even a person with thick arms can easily insert it. Further, since the bladder 130 is wound by the combination of the cylindrical drum 2 and the cuff spring 120, the configuration is simple and compact, and the cost can be reduced. Further, since the drum 2 covers the cuff spring 120 and the bladder 130, there is no possibility of damaging them when being carried.

  Further, since the cuff spring 120 is pulled in by the cuff belt 110 having the base end portion fixed together with the fixed end A of the cuff spring 120, assembly and mounting are easy, and the movable end B of the cuff spring 120 The bonding strength with the cuff belt 110 is also increased. In addition, since the cuff belt 110 covers the outer periphery of the cuff spring 120, the cuff spring 120 is flexibly bent and the cuff belt is smoothly wound.

  In the cuff belt assembly 100, the bladder 130, the cuff spring 120, and the cuff belt 110 are simply engaged by simply inserting the insertion tongue piece 122 and the tape portion 112 into the slit. Therefore, it is easy to assemble and the structure can be simplified.

  Moreover, since the cuff belt can be wound only by rotating the winding roller 90, a compact configuration can be achieved.

  Further, since the friction reduction sleeve 81 of the air tube 80 is covered, the movement of the air tube 80 accompanying the movement of the bladder 130 can be facilitated, the operation load can be reduced, and the air tube 80 can be protected. .

  Further, in the sphygmomanometer 1, since the drum 2 is configured as a complete cylindrical structure with the entire circumference being continuous, the thickness can be reduced while having high strength. Further, since the thinned drum 2 is exposed as it is on the opposite side to the sphygmomanometer body 3, as shown in FIG. 4, only a thin portion exists in front of the subject at the time of measurement, The spare space Sp can be created. That is, at the time of measurement, since the thickness of the drum 2 portion is small, there is an advantage that it does not get in the way. Further, by reducing the thickness, the diameter of the drum 2 can be increased with respect to the size of the sphygmomanometer body 3, and a person with a thicker arm can be inspected. In addition, since a dimensional margin is created by thinning, the degree of freedom in design is also increased.

  Moreover, since the cylindrical drum 2 is constituted by combining the drum halves 2A having the same shape, the cost can be reduced. In addition, since the drum 2 has a half structure, the assemblability is good, and the attachment end of the cuff band can be sandwiched and fixed to the mating portion. Improvement can be achieved.

It is a schematic perspective view which shows the external appearance of the blood pressure meter of embodiment of this invention. It is a figure which shows the winding principle of a cuff belt. It is a front view of the simplified blood pressure monitor. It is a top view which shows the state which the test subject is measuring blood pressure. It is a perspective view which shows the principal part structure which removed the exterior covers. It is a perspective view which shows the principal part structure seen from another direction. It is a perspective view which shows the assembly state of the drum which is a component of the blood pressure meter of embodiment of this invention. It is a disassembled perspective view of a drum. It is a perspective view of the cuff belt assembly which is a component of the sphygmomanometer of the embodiment of the present invention. It is a top view of the cuff belt which comprises a cuff belt. It is a top view of a cuff spring. It is a perspective view which shows the structure of the cuff belt which comprises a cuff belt, a cuff spring, and a bladder. It is explanatory drawing of the engaging part of a cuff belt, a cuff spring, and a bladder. It is explanatory drawing of the spring force of a cuff spring. It is operation | movement explanatory drawing at the time of winding a cuff belt. It is a block diagram of a cuff cover. It is a figure which shows the relationship between the cuff cover and cuff spring at the time of winding around an arm. It is a perspective view of the insertion part of an air tube.

Explanation of symbols

M arm A fixed end B movable end 1 sphygmomanometer 2 drum 2a inner circumference 2A drum half 3 sphygmomanometer body 5 insertion hole 24 outlet 25 slit 40 arm rest 80 air tube 81 friction reduction sleeve 90 take-up roller 110 cuff belt 113 Projection piece 120 Cuff spring 122 Inserting tongue piece 123 Second engagement slit 128a to 128c Punching hole 130 Bladder 133 First engagement slit 170 Cuff cover 175 Plastic sheet material

Claims (12)

A rigid cylindrical drum having an insertion hole for inserting a measurement site such as an arm;
It is made of a flexible hard sheet material, is arranged in a curved state along the inner periphery of the drum, has an elastic restoring force in the diameter expanding direction, and has a base end as a fixed end and a circle of the drum Fixed to one point in the circumferential direction, the tip is movable as the movable end along the inner circumference of the drum, and the movable end is moved along the inner circumference of the drum from the initial diameter-expanded state. A cuff spring whose diameter is reduced,
A bladder that is arranged on the inner periphery of the cuff spring and is wound around the measurement site such as the arm by the diameter of the cuff spring;
A sphygmomanometer comprising a cuff band winding mechanism, comprising: a pulling member that reduces the diameter of the cuff spring by pulling the movable end of the cuff spring toward a position close to the fixed end. A sphygmomanometer comprising the cuff wrapping mechanism according to claim 1,
The cuff spring has a change in spring force from the fixed end to the movable end so that the spring force near the fixed end is weak and the spring force near the movable end is strong. A sphygmomanometer equipped with a cuff wrapping mechanism. A sphygmomanometer comprising the cuff wrapping mechanism according to claim 2,
The cuff spring is made of a single resin sheet having a hole formed in the surface, and the distribution of the holes formed in the surface or the size of the hole is determined on the side closer to the fixed end and the side closer to the movable end. A sphygmomanometer provided with a cuff wrapping mechanism characterized in that the spring force is changed by differentiating the spring force. A sphygmomanometer comprising the cuff wrapping mechanism according to any one of claims 1 to 3,
The pull-in member is pulled out of the drum through a pull-out port provided at a position close to the fixed end of the cuff spring, and a portion to be measured such as an arm is covered so as to cover the upper side of the pull-out port. A sphygmomanometer provided with a cuff belt winding mechanism, characterized in that a platform for mounting is provided. A sphygmomanometer comprising the cuff wrapping mechanism according to claim 4,
A cylindrical cuff cover made of a flexible material such as a cloth is disposed on the inner periphery of the drum on the inner periphery of the drum, and an insertion for inserting a measurement site such as the arm into the cuff cover. A hole is secured, and when a measured part such as an arm is placed on the mounting base on the lower surface of the cuff cover, it prevents the measured part from hanging down or the cuff cover itself from hanging down. A sphygmomanometer equipped with a cuff wrapping mechanism, characterized in that a thin plastic sheet material that is harder and more flexible than the cuff cover is attached. A sphygmomanometer comprising the cuff wrapping mechanism according to claim 1,
The retracting member is disposed on an outer periphery of the cuff spring, a base end portion is fixed together with a fixed end of the cuff spring, an intermediate portion is engaged with a movable end of the cuff spring, and a distal end portion is connected to the cuff spring. A sphygmomanometer equipped with a cuff belt winding mechanism comprising a cuff belt made of a soft film drawn out of the drum through an outlet provided near a fixed end. A sphygmomanometer comprising the cuff wrapping mechanism according to claim 6,
A sphygmomanometer comprising a cuff wrapping mechanism, characterized in that a projecting piece that receives a guide action by slidingly contacting the inner periphery of the drum is provided at an intermediate portion of the cuff belt that engages with the movable end of the cuff spring. . A sphygmomanometer comprising the cuff wrapping mechanism according to claim 6 or 7,
The base end portion of the bladder is fixed together with the fixed end of the cuff spring and the base end portion of the cuff belt, and a first engagement slit is provided at the distal end portion of the bladder,
On the other hand, an insertion tongue piece with a second engagement slit is provided at the movable end of the cuff spring,
The insertion tongue piece is inserted into the first engagement slit of the bladder from the second engagement slit to the base portion, and then the tip end portion of the cuff belt is inserted into the second engagement slit of the insertion tongue piece. so,
A sphygmomanometer comprising a cuff belt winding mechanism, wherein the front end portion of the bladder is engaged with the movable end of the cuff spring, and the middle portion of the cuff belt is engaged with the movable end of the cuff spring. A sphygmomanometer comprising the cuff wrapping mechanism according to any one of claims 6 to 8,
The tip of the cuff belt drawn out of the drum from the outlet is wound around a winding roller provided outside the drum, and the cuff spring is driven via the cuff belt by the rotation of the winding roller. A sphygmomanometer equipped with a cuff wrapping mechanism. A sphygmomanometer comprising the cuff wrapping mechanism according to any one of claims 1 to 9,
The drum is provided with a slit along the moving direction of the movable end of the cuff spring,
Through the slit, an air tube is connected to the connecting port of the bladder from the outside of the drum,
A sphygmomanometer comprising a cuff wrapping mechanism, wherein a friction reducing sleeve for reducing friction with an opening edge of the slit is provided on an outer periphery of the air tube. A sphygmomanometer comprising the cuff wrapping mechanism according to any one of claims 1 to 10,
The drum is attached to the inner side of a sphygmomanometer body having a substantially L-shape in front view as a complete thin-walled cylindrical structure having a continuous entire circumference, and the side part opposite to the sphygmomanometer body is exposed to the outside. A sphygmomanometer equipped with a cuff wrapping mechanism. A sphygmomanometer comprising the cuff wrapping mechanism according to claim 11,
The sphygmomanometer provided with a cuff belt winding mechanism, wherein the drum is formed into a cylindrical shape by combining semi-cylindrical drum halves having the same shape.

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