CN113576589B - An automatic blood expelling device for surgery and first aid - Google Patents

Abstract

The invention relates to an automatic blood expelling device for surgery and first aid, which belongs to the field of medical instruments. One side of the bottom bracket is hinged with one end of the blood drive belt through the bottom bracket hinge, the other side of the bottom bracket is fixedly connected with the lock buckle, the other end of the blood drive belt is snapped into the lock buckle, and installed on the edge of the opening of each sub-belt A pair of driver brackets are installed, and a pressure sensor is installed inside each opening. The power shaft of the driver is threaded with the nut, and each driver and pressure sensor are connected to the controller through cables. The advantage is that the structure is novel. Multiple motors rotate the screw through the reducer and tighten the blood drive belt in order to realize automatic blood drive in the process of medical emergency. The built-in pressure sensor can automatically sense the blood drive pressure. According to the detected pressure and setting The value is achieved by adjusting the rotation of the motor to set the blood drive pressure, and the blood drive belt is tightened sequentially in the direction from the far end to the proximal end, and the blood drive time is recorded, so as to realize automatic blood drive.

Description

An automatic blood expelling device for surgery and first aid

technical field

The invention relates to the field of medical equipment, in particular to an automatic blood-expelling device for surgery and first aid.

Background technique

Usually an adult has 4000-5000 milliliters of blood, about 80% of which are used for circulation, and another 20% are stored in the subcutaneous tissue and internal organs. Usually, acute blood loss reaching more than 1000 ml is life-threatening. Therefore, in the process of emergency medical trauma, especially in the case of massive blood loss, hemostasis and blood supplementation are very important to improve the treatment rate. The limbs of the human body contain a large amount of blood, and compared with the brain and internal organs, the limbs are more resistant to ischemia, and usually will not die within 60 minutes of ischemia. Therefore, in the field and when blood transfusion cannot be performed immediately, medical staff can greatly reduce the circulating blood and stored blood in the limbs by compressing the limbs, and drive the blood away from the limbs, so that the driven blood can be used for Ensure the blood circulation of the vital organs of the body. This kind of medical treatment method is called exsanguination. Clinically, when surgical operations on limbs are required, in order to avoid massive bleeding, exsanguination is also used to cut off the blood circulation of the limbs.

At present, there are usually two methods of expelling blood. The first one is more traditional, using an elastic rubber blood-expelling belt, generally 10-15cm wide. When using it, the patient’s limbs are raised above the level of the heart, and the blood-expelling belt is tightened from the distal end of the rear limb to the proximal end after a while. , soft tissue is not allowed to be embedded between each circle, until it is wound to the root of the limb, the blood in the limb can be driven away from the limb. When this method is operated, the requirements for medical personnel are relatively high, and personnel with certain experience are needed to judge whether the pressure of the blood-expelling belt is appropriate. If the pressure is too low, it will not be able to effectively expel blood, otherwise it will cause compressive damage to the tissue, and the operation process is complicated, which takes up valuable human resources during first aid. The second method adopts the pneumatic compression method, that is, multiple air bags are wrapped around the limbs, and the compressed gas is filled into the air bags to realize the compression and blood-expelling effect on the limbs, and the adjustment of the blood-thrusting pressure is realized through the adjustment of the gas pressure. . Although this method solves the problem of hemorrhage pressure control and releases the medical staff, the inflatable device is bulky and inconvenient to move, and the airbag is easily punctured by sharp objects in the field or during the operation and leaks, which leads to hemorrhage Efficiency drops or even fails.

Contents of the invention

The invention provides an automatic blood-expelling device for surgery and first aid to solve the problems of complex structure, large volume and easy air leakage existing in the current blood-expelling device.

The technical solution adopted by the present invention is: including bottom bracket, blood drive belt, driver bracket, bottom bracket hinge, lock buckle, driver, controller, cable, nut and pressure sensor, wherein one side of the bottom bracket is connected to the blood drive belt through the bottom bracket hinge. One end of the belt is hinged, the other side of the bottom bracket is fixedly connected with the lock buckle, the other end of the blood drive belt is snapped into the lock buckle, and the blood drive belt is divided into 4 to 6 sub-belts by circular seams in the circumferential direction. There is an opening in the middle of the upper axial direction of the belt, and a pair of drive brackets are respectively installed on the edge of the opening of each sub-belt, and a pressure sensor is installed inside each opening. There are nuts in the holes on one side of each pair of drive brackets, and the other side The driver is fixedly installed on the top, the power shaft of the driver is threaded with the nut, and each driver and pressure sensor are connected to the controller through cables;

The bottom bracket of the present invention adopts lightweight rigid material;

The blood expelling belt of the present invention is made of elastic soft material;

The subband width of the blood-expelling belt of the present invention is 5-15cm;

The driver of the present invention includes a motor, a worm, a worm wheel and a power shaft, wherein the output shaft of the motor is rigidly connected to the worm, the worm is engaged with the worm wheel, and the worm wheel is fixedly connected to the power shaft.

The advantage of the present invention is that the structure is novel, multiple motors rotate the screw through the reducer and tighten the blood drive belt in order to realize automatic blood drive in the process of medical emergency, the built-in pressure sensor can automatically sense the blood drive pressure, according to the detected pressure And the set value is achieved by adjusting the rotation of the motor to set the blood drive pressure, and tighten the blood drive belt sequentially in the direction from the distal end to the proximal end, and record the blood drive time, so as to realize automatic blood drive. The operation is simple and convenient. Lightweight, no risk of air leakage.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a side view of the present invention;

Fig. 3 is an enlarged view of part I of the present invention;

Fig. 4 is the structural representation of driver of the present invention;

Fig. 5 is a schematic diagram of the opened state of the blood expelling belt of the present invention.

Detailed ways

As shown in Figures 1, 2 and 3, it includes a bottom bracket 1, a blood drive belt 2, a driver bracket 3, a bottom bracket hinge 4, a lock 5, a driver 6, a controller 7, a cable 8, a nut 9 and a pressure sensor 10, One side of the bottom bracket 1 is hinged with one end of the blood drive belt 2 through the bottom bracket hinge 4, the other side of the bottom bracket 1 is fixedly connected with the lock buckle 5, and the other end of the blood drive belt 2 is clamped with the lock buckle 5, and the blood drive belt There is an annular slit 201 in the circumferential direction of the blood drive belt 2 to divide the blood drive belt 2 into 4 to 6 sub-belts 202. There is an opening 203 in the upper middle of the axial direction of the blood drive belt 2, and a pair of Driver bracket 3, pressure sensor 10 is installed inside each opening 202, nut 9 is arranged in the hole of each pair of driver bracket 3 one side 301, and driver 6 is fixedly installed on the other side 302, and the power shaft 604 of driver 6 is threaded with nut 9 Connect, each driver 6 and pressure sensor 10 are connected with controller 7 by cable 8;

The bottom bracket 1 is made of lightweight rigid material;

The blood expelling belt 2 is made of elastic soft material;

The subband 202 of the blood expelling belt 2 is 5-15cm wide;

As shown in Figure 4, the driver 6 includes a motor 601, a worm 602, a worm wheel 603, and a power shaft 604, wherein the output shaft of the motor 601 is rigidly connected to the worm 602, the worm 602 is engaged with the worm wheel 603, and the worm wheel 603 is connected to the power shaft 604. Fixed connection.

working principle:

When the patient needs to perform blood-expelling operation, as shown in Figure 5, the medical staff releases the lock 5, opens the blood-extracting device, places the patient's extremities that need to be exsanguinated between the bottom bracket 1 and the blood-expelling belt 2, and then closes the Put on the blood-expelling device, lock the buckle 5, and then press the button on the control 7 to start the electric driver 6 to start locking the blood-expelling belt 2;

The driver 6 uses the principle of worm gear deceleration to make the screw rotate at a low speed and high torque, the motor 601 drives the worm 602 to rotate, and the nut 9 on the driver bracket 3 does not rotate, so the screw and the nut rotate relative to each other, thereby driving the blood drive belt 2 to lock;

The blood expelling belt 2 has 4-6 pairs of sub-belts 202, each pair is 5-15cm wide, and can be independently driven by the corresponding driver 6. The total length can cover the entire lower limbs or upper limbs, but does not cover the knee or elbow joints. The belt 2 has a built-in pressure sensor 10, which provides the controller 7 with a pressure signal when each pair of blood expelling belts is tightened;

The controller 7 is equipped with a power switch, a display screen, an adjustment button, a tightening button and a loosening button, all motors are controlled through the cable 8, and the medical staff can set the tightening force and speed of the blood-expelling device through the adjustment buttons in advance; , press the tightening button after turning on the power switch, the controller 7 will drive the motor 601 one by one from the far-center end according to the set parameters, and first tighten the blood-draining belt farthest from the heart until the pressure reaches the set value , and then tighten the adjacent pair of blood-extracting belts until the pressure reaches the set value, and so on, until all the blood-expelling belts are tightened to the set pressure, complete a bloodsucking, and then the timer starts counting, and Displayed on the screen of the controller 7, it provides the medical staff with information on the time of exsanguination to ensure that the patient will not be necrotic due to long-term tissue ischemia;

When it is necessary to loosen the blood drive belt 2, as long as the release button is pressed, the controller 7 will reversely rotate the motor sequentially from the proximal end to the far end, so that the blood drive belts are loosened one by one; when the blood pressure of the patient is lower than When the value is set and there is no human operation within a certain period of time, the blood drive device 7 will automatically start to realize the blood drive function, thereby avoiding the human error of the medical staff neglecting to start the blood drive device when they are busy.

Claims (2)

1. The utility model provides a surgery operation and first aid are with automatic bloodletting device which characterized in that: the blood-driving belt is divided into 4~6 sub-belts by an annular seam in the circumferential direction, an opening is formed in the middle of the upper axial direction of the blood-driving belt, a pair of driver supports are respectively mounted on the edges of the opening of each sub-belt, a pressure sensor is mounted in each opening, a nut is arranged in a hole on one side of each pair of driver supports, a driver is fixedly mounted on the other side of each pair of driver supports, a power shaft of the driver is in threaded connection with the nut, each driver and each pressure sensor are connected with the controller through cables, the bottom support is made of a light rigid material, and the blood-driving belt is made of an elastic soft material; the driver comprises a motor, a worm wheel and a power shaft, wherein an output shaft of the motor is rigidly connected with the worm, the worm is meshed with the worm wheel, and the worm wheel is fixedly connected with the power shaft.

2. The automatic hemospast for surgical and emergency use according to claim 1, characterized in that: the sub-width of the blood-dispelling belt is 5-15cm.

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