JPH0336350Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a cardiac massage device that compresses the sternum of a patient suffering from cardiac arrest and performs cardiac massage.

<Conventional technology> Conventional cardiac massage methods generally employ manual chest compression cardiac surgery (hereinafter referred to as manual cardiac surgery) in which the operator presses the patient's sternum with the palm of his hand while applying his body weight. ing.

<Problems to be solved by the invention> For example, it is extremely difficult to perform manual chest compressions while walking along the side of a patient being transported on a stretcher. The weight on your hands cannot be ignored either. Furthermore, in recent years, houses and modern living spaces have been trending toward higher-rise buildings, but elevators large enough to accommodate stretchers are not necessarily widely available in these buildings. For this reason, patients suffering from myocardial infarction or the like who have suffered a myocardial infarction at these locations are transported up the stairs on a stretcher, but it is nearly impossible to perform manual musculosurgery during this transport.

By the way, for patients who have suffered cardiac arrest due to myocardial infarction or the like, it is necessary to start cardiac massage as soon as possible and continue cardiac massage until the heartbeat resumes. Therefore, it is necessary to continue cardiac massage on the patient while being transported on a stretcher (same as during transport in an ambulance), but manual cardiac surgery is difficult as mentioned above (especially when being transported on a stretcher), and This method of careful pine surgery has the problem that it requires labor and cannot be continued for a long period of time.

In addition, in patients on beds with thick mattresses or elastic mattresses, compressing the sternum causes the trunk to collapse, reducing the effectiveness of cardiac massage. It is not easy to lower a patient undergoing cardiac arrest onto a hard surface or place a wide board under his or her body.

The present invention was devised with the above-mentioned in mind, and one of the main purposes of the present invention is to provide a cardiac massage device that can perform cardiac massage smoothly and satisfactorily even on patients being transported on a stretcher. .

Another main object of the present invention is to provide a cardiac muscle surgery device that can perform cardiac muscle surgery without increasing the weight burden on the person carrying the stretcher.

Another main object of the present invention is to provide a cardiac massage device that can be easily and quickly set up and used even on a patient on a stretcher.

Another main object of the present invention is to provide a cardiac massage device that does not reduce the chest compression effect even when a patient is on a soft mattress.

Another main objective of the present invention is to provide a cardiac massage device that can be continued for a long time with relatively little effort.

<Means for Solving the Problems> The structure of the present invention for achieving the above object will be explained using FIGS. 1 to 5, which correspond to the embodiments. and a flat plate 3 made of a hard material of an appropriate length in the center, and one fastener piece 4a of a velvet fastener 4 on one or both sides of both ends, and the patient's chest wall. A tightening belt 1 that can be wrapped around and attached to A, (b) made of a hard material of appropriate width and length,
A fixed holding plate 6, which is provided with the other fastener piece 4b of the velvet type fastener 4 on the upper surface and removably engages and fixes both ends of the tightening belt 1;
(iv) a single-acting piston type pressure cylinder 8 in which a cylinder 9 is erected and fixed at the center of the upper surface of the retaining plate 6, and the lower end of the piston rod 10a is inserted through the retaining plate 6; (e) a pressure body 15 for chest compression fixed to the lower end of the piston rod 10a; (e) a piston pump 16 provided with the pressure inlet/outlet 20 connected to the pressure inlet/outlet 12 of the pressure cylinder 8 via a transport pipe 22; (f) an operating device 23 that is provided in conjunction with the piston pump 16 and that extends and contracts the operating rod 19 of the piston pump, and by operating the operating rod 19 of the piston pump 16 with the operating device 23, the pressure cylinder 8
This is characterized in that the pressing body 15 is configured to move in the vertical direction via the piston 10.

<Operation of the invention> Next, the operation of the invention will be explained. Operator 23
When the piston head 18 is moved forward by operating the operating rod 19 of the piston pump 16, the pump 16
The pressure medium B in the cylinder 17 is discharged from the inlet/outlet 20 and introduced into the cylinder 9 from the inlet/outlet 12 of the pressure cylinder 8 through the transport pipe, so that the piston 10 is pushed downward by this pressure. Then, the pressing body 15 moves downward. and,
When the operating rod 19 is pulled back, the pressure medium B in the pressure cylinder 8 is sucked and discharged from the inlet/outlet 12.
Since it is introduced into the cylinder 17 of the pump 16 through the transport pipe 22, the cylinder 9 on the pressure cylinder 8 side
There will be negative pressure inside. Therefore, since the piston 10 is attracted and moved upward, the pressing body 15 also moves upward together. In this way, by operating the operating rod 19 of the piston pump and reciprocating the piston head, the pressing body 15 is moved in the vertical direction, so that the pressing body 15 can perform cardiac massage on the patient.

<Example> Hereinafter, an example of the present invention will be described with reference to the drawings. FIGS. 1 to 5 show a cardiac massage device showing one embodiment of the present invention. In these figures, reference numeral 1 denotes a flat plate made of a hard material of an appropriate length, which is located at the center of a belt body 2 which has an appropriate width and is long enough to be wrapped around the patient's chest wall A (see Figure 5). 3, and a velvet type fastener 4 (product name Maji), which is composed of a hook-like fastener piece and a loop-like fastener piece that is detachably attached to the hook-like fastener piece on both sides of both ends of the belt body 2. One fastener piece 4a of Tsukufu Fastener (registered trademark)
is attached by sewing etc. As in the embodiment, when the fastener piece 4a is attached to both sides of the belt body 2, the belt body 2 can be used both on the front and back, but when the fastener piece 4a is attached only to one side (front or back side) of the belt body 2. It's a good thing.
In addition, in the embodiment, a storage bag 5 is provided in the center of the belt body 2.
The flat plate 3 is housed in the bag 5. As the material of this flat plate 3, for example, aluminum alloy or other desired hard material can be appropriately adopted.

The flat plate 3 is used to keep the portion of the belt body 2 that contacts the patient's back surface flat when the belt 1 is wound around the patient's chest wall, and the length of the flat plate 3 is, for example, It should be formed to the same width as the target person's back.

Reference numeral 6 denotes a fixed holding plate made of a hard material having an appropriate width and length, and the other fastener piece 4b of the above-mentioned velvet type fastener 4 is attached to the upper surface of the holding plate 6. Both ends of the belt 1 are detachably engaged and fixed to the fixed holding plate 6 by the fastener pieces 4a. The fixed holding plate 6 of the embodiment is made of aluminum alloy or the like, and has a cross-section approximately the same width as the belt body 2 and approximately the same length as the flat plate 3. A fastener piece 4b is fixed to the upper surface of this holding plate 6 by adhesive or the like. When the holding plate 6 is formed as in the embodiment, a recess 7 for accommodating a pressing body, which will be described later, is formed in the center of the lower surface of the holding plate 6. in this case,
A cylindrical portion may be formed at the center of the upper surface of the holding plate 6, and the accommodating recess 7 may be configured by this cylindrical portion.

The holding plate 6 and the flat plate 3 allow the tightening belt 1
When the belt body 2 is tightly wound around the patient's chest wall, the back surface and the distal end side of the belt body 2 can be held flat (flat). This tension can prevent the entire chest wall of the patient from tightening and the cross section of the chest cavity becoming circular. In this case, if both plates 3 and 6 were not present, the entire chest would be tightened by the tension of the belt body 2 due to the lowering of the pressing body, the cross section of the chest cavity would approach a circular shape, and the internal volume of the chest cavity would expand. This goes against the purpose of cardiac thoracic surgery, which increases intrathoracic pressure while decreasing internal volume through applanation.

A piston 10 is slidably accommodated in a cylinder 9, and the piston 10 is moved by the pressure of the pressure medium B (liquid or gas) introduced into the pressure chamber 11a from a pressure inlet/outlet 12 formed in the pressure chamber 11a of the cylinder 9.
The pressure cylinder 8 has a cylinder 9 erected and fixed at the center of the upper surface of the fixed holding plate 6, and the lower end of the piston rod 10a of the piston 10 is connected to the holding plate. It is disposed so as to penetrate through a hole 13 provided in 6. Reference numeral 14 denotes an air circulation hole formed in the holding plate 6 to communicate with the air chamber 11b formed in the cylinder 9 with the piston 10 as a boundary, and the hole 14 is provided to communicate the air chamber 11b with the outside. It is.

As described above, the pressure cylinder 8 of the embodiment is configured to push (advance) the piston 10 by the pressure of the pressure medium B introduced into the pressure chamber 11a, and also to move the piston 10 backward. is configured so that the piston 10 is sucked and retracted by the negative pressure inside the pressure chamber 11a generated by discharging the pressure inside the pressure chamber 11a to the outside. In this case, when air or other pressure gas is used as the pressure medium B, a return spring is provided in the air chamber 11b of the cylinder 9 so that the piston 10 is always kept in the pressure chamber 11b.
It may be configured such that it is biased towards the 1a side and this spring promotes the return movement of the piston.

Reference numeral 15 denotes a pressing body for chest compression formed to a size that can be accommodated in the accommodation recess 7. The pressing body 15 is fixedly provided at the lower end of the piston rod 10a. The lower surface side of the pressing body 15 is made of an elastic material such as rubber.

Reference numeral 16 indicates a piston pump, and the pump 16 has a cylinder 17 of an appropriate volume, a piston head 18 that slides inside the cylinder 17, and one end fixed to the piston head 18 while the other end is movable to the outside of the cylinder 17. Projected piston operating rod 1
9, a pressure inlet/outlet 20 is formed at the tip of the cylinder 17, and an air circulation hole 21 is formed at the rear end. And pump 1
The pressure inlet/outlet 20 of the pressure cylinder 6 and the pressure inlet/outlet 12 of the pressure cylinder 8 are connected by a flexible, pressure-resistant transport pipe 22 of an appropriate length. As a result, when the piston head 18 moves forward, the pressure medium B in the cylinder 17 is discharged from the inlet/outlet 20 and the transport pipe 2
2 into the pressure chamber 11a from the inlet/outlet 12 of the pressure cylinder 8, and this pressure is transferred to the piston 10.
When the piston head 18 is moved backward, the pressure medium B in the pressure chamber 11a is sucked into the cylinder 17 of the pump 16, so that the pressure inside the pressure chamber 11a becomes negative. As a result, the piston 10 is moved backward.

Although not shown, a pressure medium replenishment part is provided at an appropriate part of the cylinder 17 (or 9),
It is configured such that pressure medium B can be replenished into the cylinder 17 (or 9). Further, an adjustment mechanism for regulating the sliding range (especially on the forward side) of the piston 10 is provided at an appropriate portion of the pressure cylinder 8, and the piston 10 is
It is preferable to configure so as to limit the zero stroke and, by extension, the reciprocating distance of the pressing body 15, and thereby,
Excessive compression of the sternum can be prevented. Also,
When a liquid is used as the pressure medium B, water, antifreeze, or any other desired liquid may be used.

Reference numeral 23 denotes an operating device that extends and retracts (reciprocates) the operating rod 19 of the piston pump 16.
It is made up of a pivot joint. and,
A piston pump 16 is attached to the tip of one operating rod 23a.
The rear side of the cylinder 17 is rotatably fixed 25, and an operating rod 19 is attached to the tip of the other operating rod 23b.
The rear end is rotatably fixed 26. As a result, when the base ends of the operating rods 23a, 23b are opened outward, the distal ends of the operating rods 23a, 23b approach each other, so the operating rod 19 contracts, and the piston head 18 moves forward, and conversely, when the base ends of the operating rods 23a, 23b are pressed inwardly, the distal ends of the operating rods 23a, 23b separate (open) from each other, so the operating rod 19 extends. However, the piston head 18 will therefore be retracted.

The cardiac massage device of this embodiment is constructed as described above, and the method of use and operation thereof will now be explained. First, the tightening belt 1 is placed on the patient's back surface so that the center portion of the belt body 2, that is, the flat plate 3 portion comes into contact with the patient's back surface. When placing the belt 1, the patient's upper body may be slightly raised, or a thin and long plastic plate (not shown) may be used as a guide.
The base end of this plastic plate is removably locked to one end of the belt 1, and the plastic plate is passed through the back of the patient and brought out to the other side until the flat plate 3 of the belt body 2 is at the back position. Pull out the belt body 2. Then, a state in which the base end side of the operating device 23 is closed (a state in which the pressing body 15 is accommodated in the accommodation recess 7)
Then, the pressing body 15 is positioned so as to hit the lower half of the patient's sternum, and the fixed holding plate 6 is placed on the anterior chest, and both ends of the belt body 2 are overlapped with the holding plate 6 from above, and the belt 1 is placed on the patient's body. Tightly wrap around chest A (5th
(see figure). Therefore, in this state, when the operating rods 23a, 23b of the operating device 23 are operated in the direction of opening the proximal ends, the piston 10 moves downward, and the pressing body 15 descends to compress the sternum. Next, when the base ends of both operating rods 23a and 23b are operated in the direction of closing, the inside of the pressure chamber 11a becomes negative pressure, and the piston 1
0 is attracted and moves upward, so the pressing body 15
By repeating this operation, cardiac massage can be performed on the patient.

In addition, in the above-mentioned process, the return (upper star) of the pressing body 15 is performed with the help of the patient's self-restoring force.

FIG. 6 shows another embodiment of the present invention.
In order to simplify the explanation, parts having the same functions as those in the embodiment shown in FIG. 1 are designated by the same reference numerals, and detailed explanation will be omitted. The operating device 23 of this embodiment is comprised of a pair of operating rods 23a and 23b that are crossed and pivoted about a pivot 24. When the operating device 23 is constructed as in this embodiment, the piston head 18 moves forward when the base ends of the operating rods 23a and 23b are operated in the closing direction, and the piston head 18 moves backward when the operating rods 23a and 23b are operated in the opening direction. . The other configurations are exactly the same as in the above embodiment.

FIG. 7 shows yet another embodiment of the present invention. The operating device 23 of this embodiment is constructed by pivoting the tips of a pair of operating rods 23a, 23b with a pivot 24. The operating device 23 constructed as in this embodiment operates in the same manner as the operating device 23 in the embodiment shown in FIG.
The other configurations are exactly the same as those of the above-described embodiments, and parts in the drawings with the same reference numerals as those in other drawings indicate the same components.

<Effects of the invention> According to the invention, the following effects can be expected.

(a) Cardiac massage can be performed smoothly even on a patient being transported on a stretcher.

(b) By operating the piston operating rod of the piston pump, the chest compression body is lowered and raised via the piston of the pressure cylinder, compressing the sternum intermittently. Cardiac cardiac surgery can be performed without increasing the weight burden (weight greater than the patient's body weight).

(c) It can be easily and quickly set up and used even for patients on stretchers.

(d) Compared to the manual pine surgery, the shin pine surgery can be performed with less effort, so even those with weak strength can continue to perform the shin pine surgery for a long period of time.

(e) When the tension belt is tightened and wound around the patient's chest wall, the fixed holding plate and the flat plate can hold the center part (the patient's back part) and the distal end of the belt body flat. As a result,
It is possible to prevent the entire chest wall of the patient from being tightened due to the tension of the belt when the pressing body for chest compression is lowered, thereby preventing the cross section of the chest cavity from becoming circular.

(f) The entire device can be made relatively small;
Convenient to carry in an ambulance.

[Brief explanation of the drawing]

1 to 5 show one embodiment of the cardiac massage device according to the present invention. FIG. 1 is a partially cutaway front view of the overall arrangement of the device, and FIG. 2 is a vertical cross-section of the piston pump. 3 is a developed plan view of the tightening belt, FIG. 4 is a plan view of the fixed holding plate, FIG. 5 is an explanatory view showing the state of use, and FIGS. 6 and 7 are views of the present invention. FIG. 6 is a diagram showing different embodiments of the operating device of the cardiac massage device according to the invention. 1... Tightening belt, 2... Belt body, 3... Flat plate, 4... Velvet type fastener, 4a, 4b
... Fastener piece, 6 ... Fixed holding plate, 8 ... Hydraulic cylinder, 9 ... Cylinder, 10 ... Piston, 10a ... Piston rod, 12 ... Pressure inlet and outlet, 14 ... Air circulation hole, 15 ... Pressing body, 1
6... Piston pump, 17... Cylinder, 18
... Piston head, 19 ... Piston operating rod,
20...Pressure inlet/outlet, 21...Air circulation hole, 22
...transport tube, A...patient's chest wall, B...pressure medium.

Claims (1)

[Claims for Utility Model Registration] (a) It has an appropriate width and length, and has a flat plate 3 made of a hard material of an appropriate length in the center, and
A tightening belt 1 which is provided with one fastener piece 4a of a velvet fastener 4 on one or both sides of both ends and is wound around and worn around the patient's chest wall A; (b) made of a hard material of appropriate width and length; On the top surface is the other fastener piece 4b of the velvet fastener 4.
(c) A fixed holding plate 6 that removably engages and fixes both ends of the tightening belt 1; (c) A cylinder 9 is erected and fixed at the center of the upper surface of the holding plate 6, and the lower end of the piston rod 10a is fixed. a single-acting piston type pressure cylinder 8 disposed through the holding plate 6; (d) the piston rod 1 of the pressure cylinder 8;
A pressing body 15 for chest compression fixed at the lower end of 0a,
(e) A piston pump 16 provided by connecting the pressure inlet/outlet 20 to the pressure inlet/outlet 12 of the pressure cylinder 8 via a transport pipe 22, (f) A piston operating rod 19 of the piston pump provided in conjunction with the piston pump 16. an operating device 23 for expanding and contracting the pressure body 15, and by operating the piston operating rod 19 of the piston pump 16 with the operating device 23, the pressing body 15 is moved through the piston 10 of the pressure cylinder 8.
What is claimed is: 1. A cardiac muscle surgery device, characterized in that it is configured to move vertically.