CN111544173A - Protective alarm device for venous fistula in dialysis patients - Google Patents

Abstract

The invention relates to a protective alarm device for a venous fistulization part of a dialysis patient, which comprises a pressure-proof assembly, wherein the pressure-proof assembly is provided with a power supply and an alarm element which are mutually connected in series; the pressure-proof assembly is arranged on the arm belt; the pressure-sensitive element is also connected in series with the power supply and the alarm element; when the pressure applied to the pressure-sensitive element is greater than a preset value, the pressure-sensitive element forms a passage; when the pressure applied on the pressure-sensitive element is smaller than a preset value, the pressure-sensitive element forms an open circuit. The beneficial effects are that: the patient can be effectively protected, and the risk of external force pressing is reduced; the device has a multi-stage early warning function, and can give an alarm to the pressures of different levels, so that the alarm is more targeted, and the psychological burden of a patient is relieved; is convenient to carry, has beautiful appearance and has little influence on the normal life of the patient.

Description

Protective alarm device for venous fistula in dialysis patients

technical field

The invention belongs to the field of medical equipment, and in particular relates to a wound pressure protection device.

Background technique

Patients whose failure needs to rely on arteriovenous fistula for dialysis treatment to maintain life, the arteriovenous fistula is usually in the arm, because the arteriovenous fistula needs to be well protected, under the action of an accidental external force, or others accidentally hold it hard. The arteriovenous fistula can easily lead to the closure of the fistula and can no longer be used, and the fistula needs to be re-created again, causing additional pain and experience burden for the patient.

Some anti-pressure components, such as the technology described in CN108478327A, can also achieve the function of anti-pressure alarm, but the device is not targeted and is prone to "false alarms", such as a slight touch will also alarm; cause panic in patients , the device does not have the ability to discriminate pressure.

Since the hand is a very important part of daily life, it has greater risks in daily life activities and is more easily affected by various external forces. In actual use, it cannot be alarmed for different stressful environments.

In clinical practice, when a trainee nurse or a young nurse measures blood pressure or injects an injection, once the operation is performed on the ostomy measuring limb, the fistula tract will be closed, which is easy to cause medical disputes.

When the patient goes out, etc., when the patient does not know that the patient is an arteriovenous fistula dialysis patient, and inadvertently grabs the limb of the patient with the arteriovenous fistula under certain circumstances, the fistula is closed and cannot be used.

SUMMARY OF THE INVENTION

[technical problem]

In view of the above problems, the present invention provides a protection and alarm device for the venous fistula of dialysis patients, which mainly solves the problems that the above-mentioned patients are easily subjected to external pressure and further damage the upper mouth after surgery.

[Technical solutions]

In order to solve the above problems, the present invention adopts the following technical solutions:

A protection and alarm device for a venous fistula of a dialysis patient, comprising a pressure-proof assembly, wherein the pressure-proof assembly is provided with a power supply and an alarm element connected in series with each other;

the anti-pressure component is arranged on the armband;

The pressure-proof assembly is provided with a pressure-sensitive element, and the pressure-sensitive element is also connected in series with the power supply and the alarm element;

When the pressure on the pressure-sensitive element is greater than the preset value, the pressure-sensitive element forms a passage; when the pressure on the pressure-sensitive element is less than the preset value, the pressure-sensitive element forms an open circuit.

Preferably, the pressure-sensitive element includes a pressure-measuring bag, and a pressure-sensing switch of the pressure-measuring bag is connected in series with the power supply and the alarm element.

Preferably, the pressure measuring bag is flat; the pressure measuring bag is attached to the outer side of the armband.

Preferably, the pressure measuring bag is in an inflated state; the pressure sensing switch monitors the internal pressure of the pressure measuring bag.

Preferably, when the pressure monitored by the pressure sensing switch is greater than a preset value, the pressure sensing switch forms a passage.

Preferably, the pressure-sensitive switch includes a pressure sensor built into the pressure-measuring bag, and a pressure-sensitive switch; the pressure-sensitive switch can control the on-off of the circuit.

Preferably, the pressure-sensitive switch can adjust the size of the current passing through it; the alarming element performs different alarming modes according to the value of the current passing through it.

Preferably, a groove is provided on the outer side of the armband, and the pressure measuring bag is embedded in the groove.

Preferably, a cushion layer is provided on the inner side of the armband.

Preferably, two ends of the armband are provided with adjustment buckles.

[Beneficial effect]

The beneficial effects of the present invention are:

1. It can effectively protect the patient and reduce the risk of external compression;

2. It has a multi-level early warning function, which can alarm different levels of pressure, making the alarm more targeted and reducing the psychological burden of the patient;

3. It is easy to carry, has a beautiful appearance, and has little impact on the normal life of patients.

Description of drawings

Fig. 1 is a kind of functional structure schematic diagram of the present invention;

Fig. 2 is the top view sectional view of the present invention in Fig. 1;

3 is a schematic diagram of the circuit principle of the multi-level alarm of the pressure sensing switch of the present invention;

Fig. 4 is a structural schematic diagram of the pressure measuring bag of the present invention.

In the picture:

1 anti-pressure component, 10 pressure sensitive elements, 11 induction switches, 12 pressure measuring bags, 20 alarm elements, 21 first-level alarm modules, 22 second-level alarm modules, 23 third-level alarm modules, 24 fourth-level alarm modules, 30 power supplies, 40 arm straps, 41 adjustment buckles.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings:

As shown in Figure 1, the protective alarm device at the venous fistula of a dialysis patient includes a pressure-proof assembly 1, and the pressure-proof assembly 1 is provided with a power supply 30 and an alarm element 20 connected in series with each other; , the alarm element 20 can feed back alarm information, one of which is to give an alarm through a lamp tube, and the other to give an alarm through a sound. Of course, other methods can also be used.

2, the anti-pressure assembly 1 is provided on the armband 40; the anti-pressure assembly 1 can be worn on the injured site (such as an arteriovenous fistula) through the armband 40, and the anti-pressure assembly 1 generally needs to cover the wound. Affected site (such as arteriovenous fistula);

The pressure-proof assembly 1 is provided with a pressure-sensitive element 10, which is also connected in series with the power supply 30 and the alarm element 20; the pressure-sensitive element 10 uses some push switches, such as two metal domes, to press Power on after contact;

When the pressure on the pressure-sensitive element 10 is greater than the preset value, the pressure-sensitive element 10 forms a passage, the adhesive strip of this pressure value; when two metal domes are used to achieve the above purpose, pass between the two metal domes The reaction force is used to adjust the pressure value; when the pressure on the pressure sensitive element 10 is less than the preset value, the pressure sensitive element 10 forms an open circuit.

Another way is that the pressure-sensitive element 10 includes a pressure-measuring bag 12 , and the pressure-sensing switch 11 of the pressure-measuring bag 12 is connected in series with the power supply 30 and the alarm element 20 .

An inflatable body can be in the pressure measuring bag 12, and when the pressure measuring bag 12 is pressed, the air pressure inside the pressure measuring bag 12 is changed, thereby converting the pressure outside the pressure measuring bag 12 into a change in the air pressure inside it;

One of the working principles of the pressure measuring bag 12 can be, in which the inflatable body is inflated, and when the side wall is pressed after the inflation, its internal volume will change, so that the air pressure will change, and the pressing force will be converted into the air pressure change; The protective area becomes larger, as long as any position of the pressure measuring bag 12 is pressed, the air pressure will change.

As shown in FIG. 4 , the pressure measuring bag 12 is flat; the pressure measuring bag 12 is attached to the outer side of the armband 40 , so that the pressure measuring bag 12 can better fit on the outer side of the armband 40 , It also reduces the impact on the patient's daily life;

The pressure measuring bag 12 is in a bulging state, and gas and liquid are available inside, so that the pressure measuring bag 12 maintains the bulging state in order to avoid frequent free shaking of liquids and the like in it, causing internal pressure changes, thereby affecting the normal use of the equipment; The pressure sensing switch 11 monitors the pressure inside the pressure measuring bag 12 .

When the pressure monitored by the pressure sensing switch 11 is greater than the preset value, the preset value needs to be set according to actual needs, and the pressure sensing switch 11 forms a passage;

The pressure-sensitive switch 11 includes a pressure sensor built in the pressure-measuring bag 12, and a pressure-sensitive switch; the pressure-sensitive switch can control the on-off of the circuit.

One way is:

First of all, this kind of circuit can be realized by connecting a small on-off electronic board to a pressure sensor. The electronic board is the core component of the pressure-sensitive switch, and the pressure sensor feeds back the monitored pressure value to the pressure-sensitive switch in real time;

Since the sensor returns a current signal generally, it returns current of different intensities according to different pressure values (generally, the higher the pressure, the greater the current). The electronic board controls the intensity of the returned current. When the current is higher than a certain value, the A path is formed between the power supply 30 and the alarm element 30, and other disclosed technologies may be referred to for specific structures such as circuit boards.

Secondly, the pressure sensing switch 11 can adjust the size of the current passing through it; the alarm element 20 performs different alarm modes according to the value of the current passing through it.

3, the alarm element 20 may include several alarm modules, and the four alarm modules in the figure are taken as an example;

The pressure sensing switch 11 measures the pressure value according to the pressure sensor. When the circuit between the alarm element 20 and the power supply 30 is formed into a path, it will also feed back different current values. voltage changes;

Finally, the first, second, third and fourth alarm modules 21, 22, 23 and 24, when the voltage across the alarm module reaches the preset value n of the first alarm module 21, the first alarm module 21 starts the alarm, and when the voltage across the alarm module reaches the preset value n of the first alarm module 21 When the preset value m is reached (n<m), the first alarm module 21 is closed; when the preset value h (m≤h) is reached, the second-level alarm module 21 is activated, and so on; the specific module structure, The algorithm can use the existing technology;

The outer side of the armband 40 is provided with a groove, and the pressure measuring bag 12 is embedded in the groove, so that the thickness of the whole device is reduced and it is more convenient to wear; it also provides an accommodation for the pressure measuring bag 12 slot, more convenient to fix;

The inner side of the armband 40 is provided with a pad layer, which makes the device more comfortable when worn on the hand, and also plays a role in absorbing sweat, and can be disassembled for easy replacement and washing.

Both ends of the armband 40 are provided with adjustment buckles 41 ; the inner diameter of the armband 40 worn on the hand is adjusted through the adjustment buckles 41 to adapt to arms of different thicknesses.

It will be apparent to those skilled in the art that various modifications to the above embodiments can be made without departing from the general spirit and concept of the present invention. All of them fall within the protection scope of the present invention. The protection scheme of the present invention is subject to the appended claims of the present invention.

Claims (9)

1. The protection alarm device for the venous fistulization part of a dialysis patient comprises a pressure-proof assembly (1), wherein the pressure-proof assembly (1) is provided with a power supply (30) and an alarm element (20) which are mutually connected in series;

the pressure-proof assembly (1) is arranged on the arm belt (40);

the method is characterized in that: the pressure-proof assembly (1) is provided with a pressure-sensitive element (10), and the pressure-sensitive element (10) is also connected with the power supply (30) and the alarm element (20) in series;

when the pressure-sensitive element (10) is subjected to pressure greater than a preset value, the pressure-sensitive element (10) forms a passage; when the pressure-sensitive element (10) is subjected to pressure smaller than a preset value, the pressure-sensitive element (10) forms an open circuit;

the pressure-sensitive element (10) comprises a pressure measuring bag (12), and a pressure sensing switch (11) of the pressure measuring bag (12) is connected with the power supply (30) and the alarm element (20) in series.

2. The dialysis patient venous fistula protection alarm device of claim 1, wherein: the pressure measuring bag (12) is flat; the pressure measuring bag (12) is attached to the outer side face of the arm band (40).

3. The dialysis patient venous fistula protection alarm device of claim 2, wherein: the pressure measuring bag (12) is in a bulging state; the pressure sensing switch (11) monitors the pressure inside the pressure measuring bag (12).

4. The dialysis patient venous fistula protection alarm device of claim 3, wherein: when the pressure monitored by the pressure sensing switch (11) is greater than a preset value, the pressure sensing switch (11) forms a passage.

5. The dialysis patient venous fistula protection alarm device of claim 2, wherein: the pressure sensing switch (11) comprises a pressure sensor and a pressure sensing switch, wherein the pressure sensor is arranged in the pressure measuring bag (12); the pressure switch can control the on-off of the pressure switch through a circuit.

6. The dialysis patient venous fistula protection alarm device of claim 1, wherein: the pressure induction switch (11) can adjust the current passing through the pressure induction switch; the alarm element (20) performs different alarm modes depending on the value of the current passing through it.

7. The dialysis patient venous fistula protection alarm device of claim 1, wherein: the outer side surface of the arm band (40) is provided with a groove, and the pressure measuring bag (12) is embedded in the groove.

8. The dialysis patient venous fistula protection alarm device of claim 1, wherein: the inner side surface of the arm belt (40) is provided with a liner layer.

9. The dialysis patient venous fistula protection alarm device of claim 1, wherein: adjusting buckles (41) are arranged at two ends of the arm belt (40).

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