JPH05164Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field The present invention relates to a portable blood pressure monitor of the type in which pressurized gas is supplied from a cylinder to a pneumatic control circuit for blood pressure measurement.

BACKGROUND ART As a type of portable blood pressure monitor, a long cylinder having a threaded connection part at one end and a semispherical shape at the other end is screwed into a housing hole formed in a housing. There is a known type of device in which the cylinder is inserted from the combination connection side and the screw connection part is screwed together to be accommodated in a housing, and pressurized gas is supplied from the cylinder to the pneumatic control circuit for blood pressure measurement. . In this type of portable blood pressure monitor, in order to protect the cylinder from damage caused by external shocks, it is desirable that the entire cylinder be housed within the housing when the cylinder is attached to the blood pressure monitor.

Problems to be solved by the invention However, with the above-mentioned conventional portable blood pressure monitor,
The cylinder is designed to be installed by directly screwing its threaded connection part into the connection part inside the housing, so if you try to house the entire cylinder inside the housing, it will be difficult to install the cylinder inside the housing or remove the cylinder from the housing. When removing the cylinder from the body, the cylinder must be rotated around its axis by grasping the slightly exposed hemispherical end that is difficult to grasp from within the housing, making it easier to attach and detach the cylinder to the connecting part. There will be an inconvenience in not being able to do so.

The present invention was developed against the background of the above-mentioned circumstances, and its purpose is to create a system in which there is extremely little risk of damage to the cylinder due to external impact when it is attached, and also to facilitate the work of attaching and removing the cylinder to the blood pressure monitor. The purpose of the present invention is to provide a portable blood pressure monitor that can be used.

Means for Solving the Problems The gist of the present invention for achieving the above object is to provide a longitudinal cylinder having a threaded connection at one end and a hemispherical end at the other end. A portable blood pressure monitor of the type that is housed in the housing by being inserted into the housing hole formed in the housing from the screw type connection side, and pressurized gas is supplied from the cylinder to the pneumatic control circuit for blood pressure measurement. (a) a moving block having a threaded portion into which the threaded connection portion of the cylinder is screwed; (b) the moving block is positioned within the housing at a first position close to the receiving hole; (c) a guide means for directly guiding the cylinder to a second position in which the cylinder is substantially housed in the housing with the threaded connection part screwed into the threaded part; When the movable block is placed in the first position, the supply of pressurized gas from the cylinder to the pneumatic pressure control circuit for the blood pressure monitor is cut off, and when the moving block is placed in the second position, the pneumatic pressure control circuit for the blood pressure monitor is cut off from the cylinder. and a switching valve device that allows supply of pressurized gas to the control circuit.

Function and Effect of the Invention By doing this, when installing the cylinder into the housing, the receiving hole is first approached, and the supply of pressure gas from the cylinder to the pneumatic control circuit for the blood pressure monitor is cut off by the switching valve device. By screwing the threaded connection part into the threaded part of the moving block in the first position, and then moving the moving block to the second position, the pressure from the cylinder to the pneumatic control circuit for the blood pressure monitor is transferred by the switching valve device. The supply of gas is allowed, and the cylinder can be substantially housed within the housing. In addition, when taking out a cylinder from the housing, the moving block located at the second position is moved to the first position close to the storage hole to make the cylinder stick out from inside the housing, and then the cylinder is applied with a rotational force. can be added to remove the threaded connection.

Therefore, according to the pressure supply device of the present invention, when the cylinder is attached to the blood pressure monitor, almost the entire cylinder is housed in the housing at the second position of the moving block, so that external shocks are avoided. There is very little risk of damage to the cylinder. Furthermore, when installing and removing the cylinder, the cylinder can be securely gripped and rotated around its axis in the first position of the moving block with the other end protruding outward from the accommodation hole. This makes it easier to attach and detach the cylinder.

Embodiment Hereinafter, an embodiment of the present invention will be described in detail based on the drawings.

FIG. 1 is a diagram showing the main parts of a portable blood pressure monitor 8 which is an embodiment of the present invention, and 10 is a casing. A long plate-like member 14 having a pair of guide grooves 12 formed therein over substantially the entire length is fixed inside the casing 10 on both sides in the width direction. 16 are formed. Inside the chamber 16 is a moving member 18 that is guided by the guide groove 12 and the inner wall surface 17 of the casing 10 and is moved in the longitudinal direction of the chamber 16.
and a longitudinal pressure cylinder 19 connected to the moving member 18.

At one end of the cylinder body 21 of the pressure cylinder 19, there is a connection port 2 having a male thread machined on the outer peripheral surface.
3 is formed and is open, and a cylindrical grip member 25 made of resin is fitted into the other end portion which is formed in a hemispherical shape. One end of the gripping member 25 is a large-diameter portion 27 formed to have a larger diameter than the other portion, and as shown in the figure, the cylinder body 21 is connected to the moving member 18 and the casing 10 is
The large diameter portion 27 is located outside the casing 10 when it is completely accommodated within the casing 10 .
Further, the outer circumferential surface of the large diameter portion 27 is knurled as shown in FIG. 2 to make it easier to grip.

The pressure cylinder 19 configured in this manner is accommodated through an accommodation hole 29 formed on the opposite side of the casing 10 to the side on which the moving member 18 is disposed. The accommodation hole 29 has a diameter that is slightly larger than the grip member 25 and has a diameter that allows the grip member 25 to fit therein, and is formed to have a somewhat smaller diameter than the large diameter portion 27 of the grip member 25, as shown in FIG. When the cylinder main body 21 is accommodated in the casing 10 as shown in FIG.

The moving member 18 corresponds to the moving block of the present invention, and has three pressure chambers 2 inside.
0, 22 and 24 are formed, and the pressure chamber 2
A diaphragm 26 is provided between 0 and 22, and a spring 28 is provided within the pressure chamber 20 to constantly bias the diaphragm 26 toward the pressure chamber 22. A valve 30 is provided between the pressure chambers 22 and 24 and is driven by the diaphragm 26 to control opening and closing between the two pressure chambers 22 and 24. Based on the operation of the valve 30, the inside of the pressure chamber 22 is is reduced to a predetermined pressure. The moving member 18 also includes a pressure chamber 22.
An injection port 32 that opens toward the plate-like member 14 from
is formed, and a stepped hole 40 consisting of a small diameter portion 34 and a female threaded hole 36 having a larger diameter is also formed. This small diameter portion 34 is opened to the pressure chamber 24 and has a female screw hole 36 into which the connection port 23 of the pressure cylinder 19 is screwed. A protrusion (not shown) is formed on the stepped portion of the stepped hole 40 and on the periphery of the small diameter portion 34, and when the connection port 23 of the pressure cylinder 19 is screwed into the female threaded hole 36, the connection is made by the protrusion. Mouth 2
An on-off valve (not shown) provided in 3 is in an open state.

An O-ring 44 is provided on the outer periphery of the opening of the injection port 32 on the side of the plate member 14, and a pair of leaf springs 46 are fixed to the side of the movable member 18 opposite to the side where the injection port 32 is formed. has been done. Then, the leaf spring 46 is pressed by the casing 10 and the movable member 18 is biased toward the plate-like member 14, so that the O-ring 44 is moved to a predetermined position by the movable member 18 and the plate-like member 14. It is constantly pressed by the pressing force. Further, inside the movable member 18 on the plate-like member 14 side, a ball 48 and a spring 50 that biases the ball 48 toward the plate-like member 14 are arranged. A pair of recesses 5 located a predetermined distance apart.
2,54 are formed. As a result, when the moving member 18 is moved in the vertical direction in FIG. 1 along the guide groove 12 and the ball 48 is fitted into the recess 52 or 54, the moving member 18
8 is maintained in the use position shown by the solid line or the detachment position shown by the dashed line. In addition,
In FIG. 1, the ball 48, spring 50, and recess 52 are shown for ease of understanding.
54 and the like are shown shifted by a predetermined distance in the width direction of the plate member 14. Also, 55
is a stopper that prevents the moving member 18 from moving beyond a certain limit. In this embodiment, the attachment/detachment position is at the first position close to the housing hole 29, and the usage position is at which the cylinder body 21 is approximately housed in the casing 10 with the connection port 23 screwed into the female threaded hole 36. The plate member 14, the inner wall surface 17, and the stopper 55 constitute a guide means for linearly guiding the movable member 18 to the first position and the second position. are doing.

The movable member 1 is located near the recess 54 of the plate member 14.
Exhaust means 56 are provided for allowing exhaust pressure in the pressure cylinder 19 when the pressure cylinder 8 is in the unloading position. The exhaust means 56 includes a communication hole 58 that communicates with the injection port 32 of the moving member 18 and a valve 60 that controls opening and closing of communication between the communication hole 58 and the atmosphere. By pressing the tip 61 of the valve element 60 exposed to the outside, the communication hole 58 is opened to the atmosphere, and the residual gas in the pressure cylinder 19 is discharged from the ejection port 32. on the other hand,
A movable member 18 is located near the recess 52 of the plate member 14.
A pressure line passage 64 that communicates with the injection port 32 when the cylinder is in the use position and connects the pressure cylinder 19 to a cuff 62 or the like wrapped around the upper arm of the human body via a blood pressure measurement pneumatic control circuit 63. is provided.

In the portable blood pressure monitor 8 configured as described above, the connection port 23 of the pressure cylinder 19 is accommodated in the female threaded hole 36 of the movable member 18 positioned at the attachment/detachment position as shown by the dashed line in FIG. The pressure cylinder 19 is attached by screwing through the hole 29. As a result, the on-off valve of the pressure cylinder 19 is opened, and the pressure gas is reduced from the pressure chamber 24 to a predetermined pressure by the valve 30, and is transferred to the pressure chamber 22 and the injection port 3.
2. In this state, the injection port 3
2 is communicated with a communication hole 58 of the exhaust means 56, but since the communication hole 58 is not open to the atmosphere, no pressurized gas is released from the injection port 32 to the atmosphere.

Next, while holding the gripping member 25, press the pressure cylinder 1.
9 towards the connection port 23 side and press the moving member 1.
8, the moving member 18 moves to the first position.
When placed in the use position as shown by the solid line in the figure, the injection port 32 and the pressure line passage 64 are brought into communication, allowing pressure gas to flow into the pressure line passage 64. Then, after the pressure gas supplied from the pressure cylinder 19 through the pressure line passage 64 increases the pressure inside the cuff 62 to a target cuff pressure (for example, about 180 mmHg) that is sufficiently higher than the systolic blood pressure, the cuff pressure is lowered. In the process, systolic blood pressure, diastolic blood pressure, etc. are measured by a measuring circuit (not shown) based on the generation and disappearance of Korotkoff sounds or changes in the magnitude of cuff pressure vibrations (pulse waves). In this embodiment, the injection port 32
and pressure line passage 64 constitute switching valve means.

When replacing the pressure cylinder 19 with a new cylinder after the above operations, first, the casing 1
By gripping and pulling out the gripping member 25 protruding to the outside of 0, the movable member 18 is moved to the detachment position. FIG. 2 is a diagram showing this state. Next, as shown by the arrow in FIG. 2, by rotating the gripping member 25 around the axis, the cylinder body 2 with the gripping member 25 fitted
1 is also rotated, and the cylinder body 21 is removed from the female threaded hole 36 of the moving member 18. After that, the gripping member 2 of the new pressure cylinder 19 is
5 and engage the connection port 23 of the cylinder body 21 with the female screw hole 36 of the moving member 18, and then further rotate the gripping member 25 to attach a new pressure cylinder 19 to the moving member 18. is completed. From this state, by pressing the pressure cylinder 19 toward the movable member 18 while grasping the gripping member 25, the movable member 18 is moved to its use position as described above. Note that the pressure cylinder 19 is attached and detached after the residual gas in the pressure cylinder 19 is exhausted by the exhaust means 56 as necessary.

As described above, according to the portable blood pressure monitor 8 of this embodiment, when the cylinder body 21 is attached to the portable blood pressure monitor 8, the entire cylinder body 21 is moved inside the casing 10 at the second position of the movable member 18. Since the cylinder is housed in the cylinder, there is very little risk of damage to the cylinder due to external impact. In addition, when attaching and detaching the cylinder body 21, the movable member 1
At the first position of 8, the cylinder body 21 can be securely gripped and rotated around the axis with the other end protruding outward from the accommodation hole, making it easy to attach and detach the cylinder body 21. It becomes.

Furthermore, in this embodiment, the gripping member 25 closes the accommodation hole 29 when the cylinder body 21 is housed in the casing 10 and holds the hemispherical end of the cylinder body 21 in a state that protrudes slightly from the casing 10. Since the cylinder body 21 is fitted in the cylinder body 21, damage to the cylinder body 21 is better prevented, and the gripping member 25 can be grasped and pulled out when the cylinder body 21 is attached and detached, so that the work of attaching and detaching the cylinder body 21 is further facilitated. It can be done efficiently.

Furthermore, in the portable blood pressure monitor 8 to which the pressure cylinder 19 of this embodiment is applied, FIGS.
As shown in the bottom view of FIG. 3a, when the cylinder body 21 is completely housed in the casing 10, the gripping member 25 has a cylindrical shape, and the end surface and the valve of the exhaust means 56 are in a cylindrical shape. Since the tip surfaces of the pressure cylinders 60 are smooth and at the same height, it is easier to support the device when placed on a tabletop or the like, compared to a case where the other end of the pressure cylinder 19 slightly protrudes from the accommodation hole 29. This provides the advantage that the legs can be

The above-mentioned embodiment is merely an embodiment of the present invention, and various changes may be made to the present invention without departing from the spirit thereof.

[Brief explanation of the drawing]

FIG. 1 is a front view showing a portable blood pressure monitor according to an embodiment of the present invention with the front side of the casing removed. Second
The figure shows a state in which the moving member shown in FIG. 1 has been moved to the attachment/detachment position. Figure 3 a and b
2 are front and bottom views of the portable blood pressure monitor shown in FIG. 1, respectively. 8... Portable blood pressure monitor, 10... Casing (housing), 14... Plate member, 17... Inner wall surface} (guiding means), 18... Moving member (moving block), 21
...Cylinder body (cylinder), 23...Connection port (threaded connection part), 29...Accommodation hole, 32...Injection port (switching valve device), 36...Female screw hole (threaded part), 5
5... Stopper (guiding means), 63... Pneumatic control circuit for blood pressure measurement, 64... Pressure line passage (switching valve device).

Claims (1)

[Claims for Utility Model Registration] A long cylinder having a threaded connection at one end and a hemispherical end at the other end is inserted into a housing hole formed in the housing on the side of the threaded connection. A portable blood pressure monitor of a type that is housed in the housing by being inserted from the cylinder, and pressurized gas is supplied from the cylinder to a pneumatic control circuit for blood pressure measurement, wherein the screw-type connection part of the cylinder is screwed together. a moving block having a threaded portion, the moving block being positioned within the housing at a first position close to the receiving hole, and when the cylinder is in a state in which the threaded connection portion is threadedly engaged with the threaded portion; a guide means for linearly guiding the cylinder to a second position where the moving block is substantially housed in the housing; and a guide means for guiding the cylinder to the blood pressure monitor pneumatic control circuit when the moving block is positioned at the first position. a switching valve device that cuts off the supply of pressurized gas from the cylinder and allows the supply of pressurized gas from the cylinder to the pneumatic control circuit for the blood pressure monitor when the moving block is located at the second position. A portable blood pressure monitor characterized by: