TWI533835B - Smart proper pressure tourniquet - Google Patents

Description

Intelligent pressure hemostasis and hemostasis method

The invention relates to a smart pressure-operated tourniquet and a hemostasis method, in particular to a tourniquet which can automatically perform inflation pressure or exhaust decompression for a hemostasis target position according to a set point.

At present, the hemostatic device used in the dialysis catheter is used to remove a large amount of blood at the needle when the drainage needle is removed. Therefore, the tourniquet is wrapped around the hemostasis point of the arm and pressed to the wound until the blood is pressed. Condensation to stop bleeding.

The traditional tourniquet used in clinical practice is a strap made of elastic fiber as a material. When hemostasis is performed, the pressure of the tightening and tightening may not be quantified, and there are disadvantages such as excessive pressure and insufficient pressure; when the tourniquet pressure is too large It will cause the dialysis of the dialysis tube to be narrowed and embolized, and finally lead to loss of function, and will cause the lack of oxygen in the end microcirculation to cause tissue hypoxia; and insufficient pressure on the tourniquet will cause the dialysis tube wound to stop bleeding and produce blood loss. Danger.

Therefore, there is a new type of M362680 "tourniquet device" patent case announced by the Republic of China on August 11, 1998, which includes a strap and a sensor attached to the strap and a warning device. The belt includes a belt body and a hemostatic bump fixed on the belt body. The sensor is disposed on the strap and can sense the blood flow smoothness of the bleeding blood vessel to output a sensing signal, and the warning device is sensed. The detector signal is connected, and a message indicating the smoothness of blood flow of the blood vessel is generated corresponding to the sensing signal, and is fixed on the strap The sensor can output the sensing signal corresponding to the smoothness of the blood flow, and the warning device can automatically output the message representing the smoothness of the blood flow, so that the dialysis person can directly know the current situation of the fistula by the message outputted by the warning device. It can save the trouble of wearing a stethoscope to listen to the blood flow of the fistula at any time when pressing the fistula to stop bleeding.

However, the tourniquet structure is a hemostatic device designed by a vascular band combined with a sensing element, but the device is the same as the traditional hemostatic bandage, and there is no automatic feedback adjustment pressure mechanism, which is easy to cause the whole tourniquet to be applied to the human body. Excessive pressure on the extremities (upper arm, forearm or thigh, etc.) makes the microcirculation of the extremities insufficient for blood supply, resulting in tissue hypoxia, so it is not ideal for use.

Therefore, in view of the above-mentioned drawbacks of the tourniquet used, the present invention provides a smart pressure-operated tourniquet with a strap provided with an outer surface and an opposite inner side. The inner system is provided with an airbag body, and the inner side of the strap is provided with a pressure plate; a controller is disposed on the outer surface of the strap, and the controller is internally provided with a pressurizing unit and a drain a pressure valve, a pressure sensing unit and an IC control chip, wherein the pressurizing unit, the pressure relief valve and the pressure sensing unit are respectively connected to the airbag body, and the IC control chip is electrically connected to the plus a pressure unit, a pressure relief valve and a pressure sensing unit; the average arterial pressure of the position to be hemostasis is measured by the sensing unit, and the IC control wafer, the pressurizing unit and the pressure relief valve are mutually interacted with the airbag body, so that The pressure plate has a hemostasis pressure Used for the position to be hemostasis.

The pressure plate is configured to have a hard circular shape, and the pressure plate has a diameter of between 1.5 cm and 2.5 cm.

The surface of the controller is provided with a screen electrically connected to the IC control chip.

The pressurizing unit is a pressure pump.

The invention also relates to a smart pressure-operated tourniquet comprising: a belt having an outer surface and an opposite inner side, wherein an inner airbag body is disposed in the belt, and the belt is outside the belt The surface system is provided with a joint portion, and the inner side of the belt is provided with a pressure plate, and at one end of the belt is provided with a ring; a pressurizing unit is connected to the air bag body, and the pressurizing unit is A pressure relief valve is provided; a pressure gauge is connected to the airbag body.

The pressurizing unit is a blood pressure ball.

The invention also relates to a method for compressing blood pressure, comprising the following steps:

A. Strong pressurization period: applying a hemostatic pressure to a hemostasis position, the hemostasis pressure is higher than the systolic pressure to completely prevent blood flow; B. continuous pressurization period: measuring the blood pressure of the position to be hemostasis, obtaining the blood to be stopped The average arterial pressure at the position is applied to the position to be hemostasis by the above-mentioned average arterial pressure. During the hemostasis, the amplitude of the blood flow at the position to be hemostasis is monitored, and the change of the mean arterial pressure at the position to be hemostasis is known. When the average arterial pressure becomes large, the pressurizing unit is controlled to increase the pressure of hemostasis, and when the average arterial pressure is decreased, the pressure releasing valve is controlled to reduce the pressure of hemostasis.

The invention has the following advantages:

1. The present invention is capable of performing hemostasis based on the mean arterial pressure of the user's blood pressure and using it as a set point for the initial inflation pressure value, so that the present invention can provide an optimum hemostasis pressure for different users.

2. In addition to providing a suitable pressure to stop bleeding according to the average arterial pressure of the user's blood pressure, the present invention can further monitor the amplitude of the blood flow generated by the hemostasis target position during the hemostasis process, and correspondingly increase according to the change of the amplitude. Or reduce the hemostasis pressure, so as to achieve the best hemostasis pressure for the hemostasis target position.

3. The process of measuring average arterial pressure, pressurization or decompression during hemostasis according to the present invention can be automatically performed, and the operation is extremely convenient.

First, referring to the first figure and the second figure, the embodiment of the present invention is a smart pressure-type tourniquet and a hemostasis method, comprising a strap (1) and a controller (2), wherein:

The belt (1) is provided with an outer surface (11) and an opposite inner side surface (12), and an airbag body (13) is attached to the belt (1), and the belt (1) is further attached to the belt (1). The outer surface (11) is provided with a joint portion (14) which can be combined with each other. The joint portion (14) can be a fastening strip, and the inner side surface (12) of the belt (1) is provided with a hard surface. a circular pressure plate (15), which can be directly fixed to the inner side surface (12), or can be movably fixed to the inner side surface (12), and the diameter of the pressure plate (15) The system is between 1.5 cm and 2.5 cm, and a set of rings (16) is provided at one end of the band (1).

a controller (2) disposed on an outer surface (11) of the strap (1), As shown in the third figure, the controller (11) is internally provided with a pressurizing unit (21), a pressure relief valve (22), a pressure sensing unit (23) and an IC control chip (24), wherein The pressurizing unit (21) is a pressure pump and is connected to the airbag body (13) for inflating the airbag body (13), and the pressure relief valve (22) is also connected to the airbag. The body (13) is configured to deflate the airbag body (13), and the pressure sensing unit (23) is also coupled to the airbag body (13) to detect the pressure in the airbag body (13) The IC control chip (24) is electrically connected to the pressurizing unit (21), the pressure relief valve (22) and the pressure sensing unit (23), respectively, to control the actuation thereof, and the controller ( 2) The surface is provided with a screen (25) electrically connected to the IC control chip (24) for displaying relevant data such as pressure value and time of hemostasis, and the screen (25) is also provided. There are a number of buttons (26) for inputting relevant values, such as setting the hemostasis time, turning the power on, turning off the power, and the like.

In use, as shown in the fourth figure, after the dialysis fistula needle is removed, the strap (1) can be wound and fixed on the patient's wrist (A), so that the pressure plate (15) can be pressed against the washing At the position of the puncture point of the renal pelvis, and passing one end of the band (1) through the collar (16) at the other end, the band (1) is bonded and fixed to the wrist (A) by the joint (14). Then, use the button (26) on the controller (2) to set the hemostasis time.

In use, as shown in the third and fourth figures, the above-mentioned band (1) having the balloon body (13) is coated on the fistula puncture point of the patient, and for the blood vessel of the patient, one plus is used. The pressing unit (21) inflates the airbag body (13), and the pressurizing unit (21) inflates the airbag body (13) to completely block Blood flow, this is a strong pressurization period, and then slowly relieve pressure [the change in blood pressure value as shown in the fifth figure, pressurization to a pressure higher than the systolic pressure and then slowly relieve pressure], when the balloon body (13) pressure When the systolic pressure is approached, the pressure sensing unit (23) can sense the pulsation of the artery below the balloon body (13). At this time, the internal pressure of the balloon body (13) is high, so the vibration amplitude of the balloon body (13) is small, and the venting is continued. When the internal pressure of the balloon body (13) is released, the pulsation is gradually increased. When the pressure in the balloon body (13) is equal to the mean arterial pressure (MAP), the amplitude of the internal pressure of the balloon body (13) is maximum, and then the airbag is used. The pressure in the body is reduced, and the intravascular barrier area is reduced, the nozzle effect is gradually reduced, and the pulsation amplitude is gradually reduced until the pressure of the balloon body (13) is less than the diastolic pressure and the pulsation cannot be generated; or the gradual boosting method is used. The measurement [the change in blood pressure value is shown in the sixth figure], and the average arterial pressure of the patient can also be measured. After the initial hemostasis, the continuous pressurization period is performed, and the pressure is further increased by the above-mentioned average arterial pressure. The plate (15) generates pressure to force the hemostasis to stop bleeding, During the hemostasis, the blood pressure value curve of the patient's blood vessel is as shown in the seventh figure.

And during the hemostasis process, the pressure sensing unit (23) of the controller (2) can sense the amplitude generated by the blood flow in the blood vessel at any time, and convert the detected amplitude to a voltage value. Returning to the IC control chip (24), the IC control chip (24) controls the pressurizing unit (23) to increase or decrease the pressure of hemostasis according to the change of the voltage value (may increase or decrease 8%) The pressure], for example, when the pressurizing unit (21) increases or decreases the pressure of 8%, the amplitude of the hemostasis becomes larger, indicating that the current hemostatic pressure value is still small, and it is necessary to increase the pressure by 8%; , If the amplitude of the hemostasis becomes small, it is necessary to reduce the hemostatic pressure; the IC control wafer (24) controls the pressurizing unit (21) to increase the pressure or control the pressure relief valve at any time according to the amplitude change of the hemostasis. (22) reducing the pressure, thereby achieving the effect of intelligently controlling the hemostasis pressure; and when the time setting value of the hemostasis is reached, the IC control wafer (24) directly stops the inflation action of the pressurizing unit (21). The pressure in the bladder body (13) is completely vented via the pressure relief valve (22), so that the patient can remove the strap (1).

According to another embodiment of the present invention, as shown in the eighth figure, the action of pressurizing or decompressing may be performed manually, mainly by providing a belt (3), and the belt is internally provided with an airbag body ( 31), on the inner side (32) of the belt (3), a rigid circular pressure plate (33) is provided, and at the end of the belt (3), a ring (34) is provided.

a pressurizing unit (4) connected to the airbag body (31), the pressurizing unit (4) being a blood pressure ball to apply pressure to the airbag body (31), the pressurizing unit (4) side A pressure relief valve (41) is provided on the side for releasing the airbag body (31).

A pressure gauge (5) is connected to the airbag body (31) for displaying the pressure value of the airbag body (31).

Thus, when the strap (3) is wound and fixed to the wrist (A) of the patient, the operator can use the pressurizing unit (4) to start pressurized inflation into the airbag body (31) to reach the initial inflation pressure. Set point, and confirm the pressure value by the pressure gauge (5), and use the pressurizing unit (4) and the pressure relief valve (31) to increase or decrease the pressure of 8% of the set point to achieve the best of Hemostasis effect.

However, the above description is only one of the preferred embodiments of the present invention, and the scope of the patent application and the contents of the description of the present invention are not limited thereto. All should still fall within the scope of protection covered by the scope of the patent application of the present invention.

(1)‧‧‧Belt

(11) ‧‧‧ outer surface

(12) ‧‧‧ inside

(13) ‧‧‧Airbag body

(14) ‧ ‧ joints

(15) ‧‧‧ Pressure plate

(16) ‧ ‧ collar

(2) ‧ ‧ controller

(21) ‧‧‧ Pressurizing unit

(22)‧‧‧Relief valve

(23)‧‧‧ Pressure sensing unit

(24) ‧‧‧IC control chip

(25)‧‧‧Screen

(26)‧‧‧ buttons

(3) ‧‧‧Belt

(31) ‧‧‧Airbag body

(32) ‧‧‧ inside

(33) ‧‧‧ Pressure plate

(34) ‧ ‧ collar

(4) ‧‧‧ Pressurizing unit

(41)‧‧‧Relief valve

(5) ‧ ‧ pressure gauge

(A) ‧ ‧ wrist

The first figure is a three-dimensional appearance of the outer surface of the belt of the present invention.

The second figure is a perspective view of the inner side of the belt of the present invention.

The third figure is a schematic diagram of the simple configuration of the control device of the present invention.

The fourth figure is a schematic view of the present invention in which the band is wound around the arm and begins to inflate.

The fifth graph is a graph showing changes in the mean arterial pressure when the invention is gradually reduced in pressure.

The sixth figure is a graph showing changes in the mean arterial pressure when the invention is gradually boosted.

The seventh figure is a graph showing the change of the blood pressure value of the patient at the start of the invention.

The eighth figure is a schematic view showing the configuration of another embodiment of the present invention.

(1)‧‧‧Belt

(11) ‧‧‧ outer surface

(13) ‧‧‧Airbag body

(14) ‧ ‧ joints

(16) ‧ ‧ collar

(2) ‧ ‧ controller

(25)‧‧‧Screen

(26)‧‧‧ buttons

Claims (7)

An intelligent pressure-operated tourniquet comprising: a strap having an outer surface and an opposite inner side, wherein an airbag body is disposed in the strap, and a pressure is provided on an inner side of the strap a controller, which is disposed on the outer surface of the strap, the controller is internally provided with a pressurizing unit, a pressure relief valve, a pressure sensing unit and an IC control chip, wherein the pressurization The unit, the pressure relief valve and the pressure sensing unit are respectively connected to the airbag body, and the IC control chip is electrically connected to the pressing unit, the pressure relief valve and the pressure sensing unit respectively; and the hemostasis is performed by the following steps: Strong pressurization period: the pressure plate is provided with a hemostatic pressure acting on a hemostasis position, the hemostasis pressure is that the pressurizing unit inflates the balloon body above the systolic pressure to completely prevent blood flow; the continuous pressurization period: after slow Slow pressure relief, and the average arterial pressure of the position to be hemostasis is measured by the pressure sensing unit, and the average arterial pressure measured above acts on the position to be hemostasis, and the pressure sense of the controller during hemostasis Measuring unit can be used at any time The amplitude of the blood flow in the position to be hemosted is sensed to obtain the change of the average arterial pressure, and the detected amplitude is converted into a voltage value and transmitted back to the IC control chip, the IC control chip The change of the average arterial pressure is obtained according to the change of the voltage value, and when the average arterial pressure is increased, the pressurizing unit is controlled to increase the pressure of hemostasis, and when the average arterial pressure is decreased, the pressure reducing valve is controlled to decrease. Hemostasis Pressure. The intelligent pressure-operated tourniquet according to claim 1, wherein the pressure plate is formed in a hard circular shape, and the diameter of the pressure plate is between 1.5 cm and 2.5 cm. The smart pressure-operated tourniquet according to claim 1, wherein the surface of the controller is provided with a screen electrically connected to the IC control chip. The intelligent pressure-operated tourniquet according to claim 1, wherein the pressurizing unit is a pressure pump. An intelligent pressure-operated tourniquet comprising: a strap having an outer surface and an opposite inner side, wherein an airbag body is disposed in the strap, and a surface is disposed on the outer surface of the strap a joint portion, another inner side of the belt is provided with a pressure plate, and another end of the belt is provided with a ring; a pressurizing unit is connected to the air bag body, and the pressurizing unit is provided with a pressure relief a pressure gauge, which is connected to the balloon body; performs hemostasis by the following steps: a strong pressurization period: the pressure plate is provided with a hemostasis pressure acting on a hemostasis position, and the hemostasis pressure is that the pressurizing unit The balloon body is inflated to a temperature higher than the systolic pressure to completely prevent blood flow; the continuous pressurization period: after which the pressure is gradually relieved, and the average arterial pressure at the position to be hemostasis is applied to the position to be hemostasis, and in the process of hemostasis, Knowing the change of the average arterial pressure at the hemostasis position, when the average arterial pressure becomes large, the pressurizing unit is controlled to increase the pressure of hemostasis, and when the average arterial pressure is small, the pressure relief valve is controlled to reduce the pressure of hemostasis. The intelligent pressure-operated tourniquet according to claim 5, wherein the pressurizing unit is a blood pressure ball. A method for compressing blood pressure comprises the following steps: A. Strong pressurization period: applying a hemostasis pressure to a hemostasis position, the hemostasis pressure is higher than the systolic pressure to completely prevent blood flow; B. continuous pressurization period: measurement The blood pressure of the position to be hemostasis is obtained, and the average arterial pressure of the position to be hemostasis is obtained, and the average arterial pressure is applied to the position to be hemostasis, and during the hemostasis, the amplitude of the blood flow generated by the position to be hemostasis is monitored. Knowing the change of the average arterial pressure at the hemostasis position, when the average arterial pressure becomes large, the pressurizing unit is controlled to increase the pressure of hemostasis, and when the average arterial pressure is small, the pressure relief valve is controlled to reduce the pressure of hemostasis.