TWM492741U - Reciprocating pressurizing device - Google Patents

Description

Reciprocating pressurizing device

The present invention relates to a pressurizing device for providing an external counterpulsation device, a reciprocating pressurizing device which can adjust the pressure maintained by the airbag cover after inflation, and can produce a progressive pressure or relaxation effect.

Cardiac medicine has been progressing very rapidly, especially in the treatment of coronary heart disease and heart failure. In addition to the development of various drugs, the development of cardiac catheters and vascular stents, cardiac synchronous rhythms and internal electrocardiographs, surgical operations have also made great progress. Even so, many patients still have vascular stents or surgical bypass surgery. There is a phenomenon of chest tightness or wheezing.

It is known that the external counterpulsation (ECP) device or the enhanced external counterpulsation (EECP) device can be used to make the lower extremity squeeze with the heartbeat and the aortic diastolic pressure by mechanical action in a non-invasive mechanical assisted circulation. Reduces aortic systolic blood pressure, increases coronary blood flow, thereby improving myocardial metabolism and function, and even after receiving long-term treatment, patients can increase cardiac angiogenesis and further improve myocardial function.

In recent years, many studies have confirmed that ECP/EECP in vitro counterpulsation device has the advantages of increasing coronary blood flow, increasing blood flow shear stress, improving vascular endothelial cell structure and function, preventing thrombosis and promoting vascular collateral circulation. More research has pointed out that the clinical response rate of patients to this treatment can reach 70~80%, the effect It may last for 2-5 years. Therefore, the medical community currently believes that the external counterpulsation device ECP/EECP is an effective and safe alternative treatment option for patients with angina pectoris and heart failure.

More specifically, a typical external counterpulsation device, as shown in the first figure, includes a plurality of interconnected balloon sleeves 11 for enclosing the patient's limbs. In several ECP systems, an additional balloon sleeve can be placed over the patient's femur. a region and/or a buttock, and then an air pressure source 20 is connected from the airbag cover 11 at the distal end of the extremities, and a set of controllers 30 are used to sequentially pressurize the airbag cover through the airbag cover 11 at the distal end of the extremities toward the proximal end. And the controller 30 controls the inflation and deflation starting points of the respective airbag sleeves 11 according to the patient's electrocardiogram (ECG) signal to synchronize with the patient's electrocardiogram (ECG) signal.

In principle, based on the electrocardiogram, the airbag cover 11 is periodically deflated at the beginning of the systolic phase at the beginning of the diastolic phase, during which the calf airbag cover 11 is first inflated, and then the lower thigh airbag cover 11, And finally the upper thigh airbag cover 11, when the controller 30 is properly synchronized with the electrocardiogram, the ECP system will function to reduce the back load that the heart must resist pumping, and increase the preload of the filled heart, thereby increasing cardiac output. (The amount of blood injected into the aorta or pulmonary artery every minute from the left or right ventricle).

The air pressure source 20 similar to that used in the external counterpulsation device is basically composed of a pneumatic pump 21 and an accumulator bucket 22 connected to the pneumatic pump 21; as a result, the controller 30 is disposed in the accumulator bucket 22 An intake valve 31 and a deflation valve 32 are formed between the airbag cover 11 and the venting valve 32, and the airbag cover 11 is inflated and deflated mainly through the mutual opening/closing of the intake valve 31 and the deflation valve 32.

However, such a structural design cannot adjust the pressure maintained by the airbag cover 11 after inflation, and the inflation and deflation of the airbag cover 11 are completely controlled by the mutual opening/closing of the intake valve 31 and the deflation valve 32, and cannot be gradually produced. The effect of pressurization or relaxation is not only easy to cause discomfort to the patient, but also makes the external counterpulsation device unable to Widely used in patients with severe aortic valve disease, poor blood pressure control, severe lower extremity venous thrombosis.

In view of this, the present invention provides an external counterpulsation device which is a reciprocating pressurizing device which adjusts the pressure maintained by the inflation of the airbag cover according to requirements, and which can produce a progressive pressure or relaxation effect.

In order to achieve the above, the reciprocating pressurizing device of the present invention is connected to an airbag sleeve of an external counterpulsation device through a gas transmission line, and is connected to a pneumatic source through a first intake line, the pressurizing device The system includes: a cylinder block, an intake valve, a bleed valve, a regulating valve, a pressure sensor, a control circuit, and a pneumatic buffer tank; wherein: the cylinder system is provided with a cylinder section having a predetermined stroke One end of the cylinder section is provided with an air supply hole for connecting the gas transmission line, and the other end of the cylinder section opposite to the air supply hole is provided with an air inlet hole for connecting the first air inlet line and a venting hole for releasing pressure, and a piston which is tightly engaged with the inner wall of the cylinder section and reciprocally displaceable in the cylinder section is disposed in the cylinder section; the intake valve is disposed at the first The intake line is configured to control whether the first intake pipe is conducting or not; the air release valve is disposed at a vent hole of the cylinder block for controlling whether the vent hole is turned on or not; the regulating valve is connected to the gas pipe a second intake line and a second intake line for controlling the second a pipeline is electrically connected to the gas pipeline, and a pressure value for setting a pressure of the second intake pipeline into the gas pipeline; the pressure sensor is disposed at the gas pipeline for different a corresponding current signal is generated in a pressure state; the control circuit is electrically connected to the pressure sensor, the intake valve, the air release valve, and the regulating valve, according to the loaded action mode and the pressure sensing The current signal of the device controls the intake valve, the vent valve, and whether the regulating valve operates or not; the air pressure buffer barrel is connected to the gas transmission line, and a gas pressure is formed between the gas supply line and the cylinder block Punch space.

With the above structural features, the reciprocating pressurizing device of the present invention passes through the first and second intake lines and the gas supply line, and is surely connected with the air pressure source and the air bag cover, and the air bag cover of the external counterpulsation device can be set through the regulating valve. After the pressure is to be maintained after the inflation, after starting, the intake valve is first opened by the control circuit and the pressure relief valve is closed, and the pressure of the air pressure source pushes the piston in the cylinder body to the end of the stroke of the air supply hole, and then the adjustment is started. The valve causes the air pressure of the air pressure source to enter the gas supply line to inflate the airbag cover until the pressure to be maintained, and then closes the regulating valve to keep the airbag cover at the set pressure; if necessary, the control circuit can alternately switch the intake valve and vent The pressure valve is opened/closed, so that the piston in the cylinder body is reciprocally displaced to achieve a progressive charging or deflating effect.

According to the above structural features, the air pressure buffer can be constructed of a rigid container.

According to the above structural feature, the air pressure buffer tank may be composed of a flexible container.

The air pressure source is composed of a pneumatic pump and an accumulator barrel, and the first intake line and the second intake line are connected to the accumulator.

The air pressure source is provided by two air pressure pumps and two pressure accumulating barrels respectively connected to the respective air pressure pumps, and the first air inlet pipeline and the second air intake pipeline system respectively have different pressure accumulating pressures. Bucket connection.

The intake valve, the bleed valve and the regulating valve are respectively constituted by a solenoid valve.

Specifically, the reciprocating pressurizing device disclosed in the present invention is capable of setting a pressure to be maintained by the airbag sleeve of the external counterpulsation device after inflation after passing through the regulating valve; if necessary, the control circuit can alternately switch the intake valve and vent The pressure valve is opened/closed, so that the piston in the cylinder body is reciprocally displaced to achieve progressive pressure or relaxation. Charge/deflation effect; even, an air pressure buffer space can be provided by the air pressure buffer barrel to prevent the piston from vibrating due to the sudden change of the vertical force area in the process of relaxing the pressure of the airbag sleeve, which can reduce the patient's external counterpulsation The discomfort of the device treatment is more helpful for the external counterpulsation device to be used in patients with severe aortic valve disease, poor blood pressure control, and severe lower extremity venous thrombosis.

11‧‧‧Airbag cover

20‧‧‧Air pressure source

21‧‧‧Pneumatic pump

22‧‧‧Accumulator bucket

30‧‧‧ Controller

31‧‧‧Intake valve

32‧‧‧Discharge valve

41‧‧‧First intake line

42‧‧‧Second intake line

43‧‧‧ gas pipeline

50‧‧‧Cylinder block

51‧‧‧Cylinder section

52‧‧‧ Vents

53‧‧‧Air intake

54‧‧‧ Ventilation holes

55‧‧‧Piston

61‧‧‧Intake valve

62‧‧‧Discharge valve

63‧‧‧Regulator

70‧‧‧pressure sensor

80‧‧‧Control circuit

90‧‧‧Air pressure buffer bucket

The first figure is a schematic diagram of the structural composition of a typical external counterpulsation device.

The second figure is a schematic diagram of the configuration of the reciprocating pressurizing device of the present invention.

The third figure is a schematic diagram of the structure of the reciprocating pressurizing device of the present invention.

The fourth figure is a schematic diagram of the operation of the reciprocating pressurizing device of the present invention.

The present invention mainly provides an external counterpulsation device, a reciprocating pressurizing device that adjusts the pressure maintained by the airbag cover after inflation, and can produce a stepwise pressure or relaxation effect, such as the reciprocating pressurizing device of the second figure. FIG. 3 is a schematic view showing the structure of the pressurizing device of the present invention. The pressurizing device of the present invention is connected to the airbag cover 11 of an external counterpulsation device through a gas supply line 43 and through a first intake air. The pipeline 41 is connected to the air pressure source 20, and the integral pressing device basically comprises: a cylinder block 50, an intake valve 61, a deflation valve 62, a regulating valve 63, a pressure sensor 70, and a control circuit. 80, and an air pressure buffer tank 90; wherein: the cylinder block 50 is provided with a cylinder section 51 having a predetermined stroke, and one end of the cylinder section 51 is provided with a gas transmission hole for connecting the gas supply line 43 52. The other end of the cylinder section 51 opposite to the air supply hole 52 is provided with an air inlet hole 53 for connecting the first air inlet line 41 and a air release hole 54 for releasing pressure, in the cylinder section 51. The inner sleeve is provided with a piston 55 which is in close contact with the inner wall of the cylinder section 51 and is reciprocally displaceable in the cylinder section 51.

The intake valve 61 is disposed at the first intake line 41 for controlling whether the first intake line 41 is turned on or not. In implementation, the intake valve 61 may be formed by a solenoid valve. It is not limited to have the function of adjusting the intake pressure, and it is of course preferable to have the function of adjusting the intake pressure.

The venting valve 62 is disposed at the vent hole 54 of the cylinder block 50 for controlling whether the vent hole 54 is electrically connected. Similarly, the bleed valve 62 may be constituted by a solenoid valve.

The regulating valve 63 is connected to the gas supply line 43 and a second intake line 42 for controlling whether the second intake line 42 is electrically connected to the gas supply line 43 and for setting the second inlet. The air pressure of the gas line 42 enters the pressure value of the gas supply line 43; similarly, the regulating valve 63 can be composed of a solenoid valve.

The pressure sensor 70 is disposed at the gas supply line 43 for generating a corresponding current signal under different pressure conditions.

The control circuit 80 is electrically connected to the pressure sensor 70, the intake valve 61, the bleed valve 62, and the regulating valve 63 for the action mode loaded and the pressure sensor 70. The current signal controls whether the intake valve 61, the bleed valve 62, and the regulating valve 63 operate or not.

The air pressure buffer tank 90 is connected to the gas supply line 43 for forming a gas pressure buffer space between the gas supply line 43 and the cylinder block 50. In practice, the air pressure buffer tank 90 can be made of a rigid container. It consists of or consists of a flexible container.

In principle, the reciprocating pressurizing device of the present invention is used when Through the first and second intake lines 41, 42 and the gas supply line 43, after being connected to the air pressure source 20 and the airbag cover 11, the airbag cover 11 of the external counterpulsation device can be set through the regulating valve 63 to maintain the airbag sleeve 11 after inflation. pressure.

After the integral reciprocating pressurization device is started, first, as shown in the third figure, the intake valve 61 is opened by the control circuit 80 and the deflation valve 62 is closed, and the piston 55 in the cylinder block 50 is pushed to the input by the air pressure of the air pressure source. At the end of the stroke in the direction of the air hole 52 (ie, the end of the pressurizing stroke), the regulating valve 63 is opened to cause the air pressure of the air pressure source to enter the air supply line 43 to inflate the airbag cover until the pressure to be maintained is closed, and the regulating valve 63 is closed. Keep the airbag cover at the set pressure.

If necessary, the control circuit 80 can alternately switch the intake valve 61 and the bleed valve 62 to open/close, so that the piston 55 in the cylinder block 50 is reciprocally displaced (as shown in the fourth figure) to reciprocate at the piston 55. Under the action of squeezing and retracting, the charging/deflation effect of gradually pressurizing or relaxing the airbag cover is achieved.

Furthermore, in the process of the displacement of the piston 55 toward the air inlet hole 53 (that is, toward the pressure direction of the airbag cover), an air pressure buffer space can be provided by the air pressure buffer barrel to prevent the piston 55 from being rapidly changed due to the vertical force receiving area. Quivering can not only reduce the patient's discomfort in the treatment of external counterpulsation devices, but also help the external counterpulsation device to be used in patients with severe aortic valve disease, poor blood pressure control, and severe lower extremity venous thrombosis.

It is to be noted that, in the above various embodiments, the air pressure source may be connected by a pneumatic pump 21 and an accumulator bucket 22 as shown in the second figure, and the first intake line 41 is connected. The second intake line 42 is connected to the pressure accumulation tank 22. Of course, the air pressure source is provided by two air pressure pumps and two pressure accumulation barrels respectively connected to the respective air pressure pumps, and the first intake line and the second intake line are different from each other. The pressure accumulating barrel connection can also allow the above-described various embodiments of the pressurizing device to produce the desired action effect.

Compared with the conventional conventional structure, the reciprocating pressurizing device disclosed in the present invention can adjust the pressure to be maintained by the airbag sleeve of the external counterpulsation device after inflation by the regulating valve; if necessary, the control circuit can alternately switch the intake air. The valve and the pressure relief valve are opened/closed, so that the piston in the cylinder body is reciprocally displaced to achieve a progressively pressurized or relaxed charging/defensing effect; even, the piston can be pressurized under the action of the stopper At the end of the stroke, a buffer space is still left with the wall surface of the cylinder section of the cylinder block to prevent the piston from vibrating in a relatively more positive and reliable manner, which not only reduces the patient's discomfort of receiving the external counterpulsation device, but also helps External counterpulsation devices are used in patients with severe aortic valve disease, poor control of severe blood pressure, and severe venous thrombosis of the lower extremities.

In summary, the present invention provides an external counter-pulsation device, a preferably viable reciprocating pressurizing device, and an application for a new patent according to law; the technical content and technical features of the present invention have been disclosed above, but are familiar with the technology. Persons may still make substitutions and modifications based on the disclosure of this creation without departing from the spirit of the creation of the case. Therefore, the scope of the present invention is not limited to the embodiments disclosed, but includes various alternatives and modifications that do not depart from the present invention and are covered by the following claims.

41‧‧‧First intake line

42‧‧‧Second intake line

43‧‧‧ gas pipeline

50‧‧‧Cylinder block

51‧‧‧Cylinder section

52‧‧‧ Vents

53‧‧‧Air intake

54‧‧‧ Ventilation holes

55‧‧‧Piston

61‧‧‧Intake valve

62‧‧‧Discharge valve

63‧‧‧Regulator

70‧‧‧pressure sensor

80‧‧‧Control circuit

90‧‧‧Air pressure buffer bucket

Claims (6)

A reciprocating pressurizing device is connected to an airbag sleeve of an external counterpulsation device through a gas pipeline, and is connected to a pneumatic source through a first air inlet conduit, the pressurizing device comprising: a cylinder block, a An intake valve, a bleed valve, a regulating valve, a pressure sensor, a control circuit, and a pneumatic buffer tank; wherein: the cylinder system is provided with a cylinder section having a predetermined stroke, wherein the cylinder section is One end is provided with an air supply hole for connecting the gas transmission line, and the other end of the cylinder section opposite to the air supply hole is provided with an air inlet hole for connecting the first air inlet pipe and a air release hole for releasing pressure. Providing a piston in the cylinder section that is in close contact with the inner wall of the cylinder section and reciprocally displaceable in the cylinder section; the intake valve is disposed at the first intake line for control Whether the first intake pipe is electrically connected or not; the air release valve is disposed at a vent hole of the cylinder block for controlling whether the vent hole is turned on or not; the regulating valve is connected to the gas pipeline and a second air inlet pipe a road connection for controlling the second intake line and the gas supply line Passing or not, and a pressure value for setting the air pressure of the second intake line into the gas supply line; the pressure sensor is disposed at the gas supply line for corresponding pressure conditions a current signal; the control circuit is electrically connected to the pressure sensor, the intake valve, the air release valve, and the regulating valve, and is configured to control the action mode according to the loaded action mode and the current signal of the pressure sensor The air inlet valve, the air release valve, the regulating valve is operated or not; the air pressure buffer barrel is connected to the air supply line, and an air pressure buffer space is formed between the air supply line and the cylinder block. The reciprocating pressurizing apparatus according to claim 1, wherein the air pressure buffer tank is constituted by a rigid container. The reciprocating pressurizing apparatus according to claim 1, wherein the air pressure buffer tank is constituted by a rigid container. The reciprocating pressurizing device according to any one of claims 1 to 3, wherein the air pressure source is constituted by a pneumatic pump and an accumulator bucket connection, the first intake duct and the second An intake line is connected to the pressure accumulation tank. The reciprocating pressurizing device according to any one of claims 1 to 3, wherein the air pressure source is provided by two air pressure pumps and two pressure accumulating barrels respectively connected to the respective air pressure pumps, The first intake line and the second intake line are each connected to a different pressure accumulator. The reciprocating pressurizing apparatus according to any one of claims 1 to 3, wherein the intake valve, the deflation valve, and the regulating valve are respectively constituted by a solenoid valve.