CN221730593U - Electric venous blood sampling pressurizer - Google Patents

Abstract

The utility model provides an electric venous blood sampling pressurizer, which comprises a sleeve belt with a magic tape, wherein an air bag is arranged in the sleeve belt, an air port of the air bag is communicated with a first interface of a T-shaped three-way pipe, a second interface of the T-shaped three-way pipe is communicated with an inflator pump, and a third interface of the T-shaped three-way pipe is communicated with a deflation valve; the inner side surface of the sleeve belt is connected with a heating pad, the inflator pump, the air release valve and the heating pad are all connected with a circuit board to be controlled by the circuit board, and the circuit board is connected with a rechargeable battery. The electric venous blood sampling pressurizer can automatically carry out pressurizing, compressing or pressure releasing and releasing of the air bag by controlling the air pump and the air release valve through the circuit board, is convenient to operate, improves the pulse pressing comfort level, can improve local blood circulation and ensures the blood sampling amount.

Description

Electric venous blood sampling pressurizer

Technical Field

The utility model belongs to the field of medical equipment and relates to a blood sampling device, in particular to an electric venous blood sampling pressurizer with automatic gas filling and deflation type pressurization and combined heating.

Background Art

Medical compression cuffs are one of the most commonly used medical devices in clinical practice. They are mainly used to compress veins to slow down venous blood return, fill local blood vessels, and facilitate venous blood sample collection and puncture during infusion. For patients with poor conditions or after multiple peripheral irritant drug treatments (such as chemotherapy drugs), venous blood collection is more difficult. The use of existing medical compression cuffs has the following shortcomings:

1. Traditional cuffs are generally made of ordinary elastic rubber tubes. Due to their small diameter, it is difficult to control the tightness of the pressure on the muscle tissue when tying the cuff. If it is too tight, it will cause varying degrees of pain to the individual; if it is too loose, the cuff will easily loosen or the local veins will not be filled enough, resulting in difficulty in operation. 2. When tying the cuff, the knot can easily tighten the individual's skin, which will increase the individual's pain. 3. In clinical practice, medical staff need to use both hands to tie the cuff tightly to the individual's limbs when using it. If the individual has poor venous conditions, it needs to be tied repeatedly, which increases the workload. 4. Due to the small area of the rubber tube, it is easy to be covered by clothing. Medical staff may forget to loosen the cuff after operation, which may cause adverse events such as limb ischemia or even necrosis. 5. The use of disposable cuffs made of various materials will cause a waste of resources. 6. Traditional compression cuffs can only expose the veins for individuals with poor venous conditions, but cannot help ensure the amount of blood drawn from individuals. 7. When the temperature of the blood collection environment is low, the superficial veins of the exposed patient's limbs will contract after being cooled. Some of the current pneumatic compression devices cannot improve venous filling by simply applying pressure. At the same time, the stimulation of the cold equipment significantly reduces the patient's comfort.

Utility Model Content

In order to overcome the deficiencies in the prior art, the utility model provides an electric venous blood collection pressurizer, which can automatically pressurize or relieve the airbag by controlling the inflation pump and the deflation valve through a circuit board. It is easy to operate, improves the comfort of pulse compression, can improve local blood circulation, and ensure the amount of blood collected.

The technical solution adopted by the utility model to solve its technical problems is:

An electric venous blood sampling pressurizer comprises a cuff with Velcro, wherein an air bag is arranged inside the cuff, the air port of the air bag is connected to the first interface of the T-shaped three-way pipe, the second interface of the T-shaped three-way pipe is connected to the inflation pump, and the third interface of the T-shaped three-way pipe is connected to the deflation valve; a heating pad is connected to the inner surface of the cuff, the inflation pump, the deflation valve and the heating pad are all connected to a circuit board to be controlled by the circuit board, and the circuit board is connected to a rechargeable battery.

Furthermore, the circuit board controls the inflation pump and the deflation valve to work independently or in an alternating cycle.

Furthermore, the three interfaces of the T-shaped three-way pipe are respectively connected to the inflation pump, the T-shaped three-way pipe, and the airbag through a connecting pipe.

Furthermore, a pressure display for monitoring and displaying the pressure of the airbag is connected to the connecting tube connected between the T-shaped three-way tube and the airbag.

Furthermore, a waterproof cloth is adhered to the upper surface of the heating pad, and a heat-insulating cotton is adhered to the lower surface.

The beneficial effects of the utility model include:

1. The circuit board controls the air pump to automatically inflate and pressurize, or controls the deflation valve to deflate and release pressure, or controls the alternating cycle of inflation and deflation. The operation is quick and convenient, which can speed up the process of venipuncture and blood collection;

2. The air bag is set in the cuff to balance the pressure on the arm, improve the comfort of pulse pressure and reduce the pain of the individual;

3. The pressurization value is preset to be constant and can be monitored and displayed by the pressure display. The inflation and deflation are alternating regularly to avoid continuous pressurization of the limbs and ischemia, which is safe and reliable;

4. Controlling the inflation pump and deflation valve through the circuit board to achieve different inflation and deflation modes can promote blood vessel exposure and facilitate successful venous blood collection operations; alternating inflation and deflation of the air bag can improve local circulation and ensure the amount of blood collected; when used in patients with reflux obstruction or local edema, it is also beneficial to improve peripheral reflux;

5. The device is equipped with a heating pad, which can increase the local temperature, promote the acceleration of blood circulation, facilitate the exposure of vascular filling and the collection of sufficient specimens, shorten the blood collection time, avoid multiple blood collections, and improve the patient's comfort;

6. The device is small, soft, and powered by a rechargeable battery. It is not restricted by location and power supply, and is easy to use. It is suitable for patients who are bedridden or in a passive position, or whose blood vessels are in poor condition after multiple irritant drug treatments. It can adapt to limbs of different thicknesses and is conducive to rapid operation.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a schematic diagram of the overall structure of the utility model.

In the figure: 1. Cuff; 2. Heating pad; 3. Velcro; 4. Connecting tube; 5. Deflation valve; 6. T-type three-way pipe; 7. Air pump; 8. Rechargeable battery; 9. Pressure display; 10. Circuit board;

A, circuit board display; B1, heating pad connection port; B2, air release valve connection port; B3, air pump connection port; B4, rechargeable battery connection port; C1, circuit board switch; C2, setting button; C3, up button; C4, down button; C5, heating pad switch.

DETAILED DESCRIPTION

The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used to distinguish components, and cannot be understood as indicating or implying relative importance.

In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

Example 1

An electric venous blood sampling pressurizer with automatic inflation and deflation combined with heating, comprising a cuff 1 with Velcro 3, an air bag, a heating pad 2, a connecting tube 4, an air release valve 5, a T-shaped three-way pipe 6, an air pump 7, a rechargeable battery 8, a pressure display 9, and a circuit board 10; referring to FIG1 , the air pump 7 and the air release valve 5 are connected to the two ends of the T-shaped three-way pipe 6 through a ventilation connecting tube 4, and the third end of the T-shaped three-way pipe 6 is connected to the air bag; the air bag is installed in the cuff 1 with Velcro 3 at both ends, and if the air bag is damaged and needs to be replaced, it is convenient to replace, and the Velcro 3 can be fixed to the outside of the cuff by glue, so that the cuff 1 can adjust the looseness according to the thickness of the patient's upper arm; the heating pad 2 is placed on the inner side of the cuff 1, and the air pump 7, the air release valve 5, the rechargeable battery 8, and the heating pad 2 are all connected to the circuit board 10. The T-shaped three-way pipe 6 is connected to a pressure display 9 for monitoring and displaying the air bag pressure.

The heating pad 2 is a conventional commercial product. The heating pad 2 selected in this embodiment includes a switch, 5 gears, and controls 5 constant temperatures from low to high. The adjustable temperature is 25-50°C, the input voltage is 5V, 2A, and the front side is attached with waterproof cloth, and the back side is thermal insulation cotton. It can be fixed to the inner side of the cuff 1 by glue, and its circuit is connected to the B1 interface of the circuit board 10.

The circuit board 10 is a conventional commercial product. The circuit board 10 selected in this embodiment has a dual-path delay relay module, one path controls the deflation valve and the inflation pump, and the other path controls the heating pad 2. The circuit board 10 includes a switch, 4 control keys, and 4 circuit interfaces (battery, inflation pump, deflation valve, heating pad). Different working modes can be set. Preferably, the following working modes are set in this embodiment:

Mode 1-Puncture mode: After the circuit is connected, the air pump works for 5 seconds, and stops working when the pressure reaches 9kpa. At this time, the deflation valve is also closed, maintaining 9kpa until the circuit is disconnected;

Mode 2 - Collection mode: After the circuit is connected, the air pump will work for 5 seconds and then stop, and the rear deflation valve will work for 3 seconds and then stop, an infinite cycle, and the power will be cut off and stop;

Mode 3 - Massage mode: After the circuit is turned on, the air pump will work for 7 seconds and then stop, and the rear deflation valve will work for 4 seconds and then stop, an infinite cycle, and it will stop when the power is off.

The connecting tube 4 is a conventional commercial product. In this embodiment, a tube with an inner diameter of 4 mm is selected. The inflation pump 7, the deflation valve 5, and the air bag are respectively connected to one end of the T-shaped three-way tube 6 to conduct the air flow.

The degassing valve 5 is a conventional commercial product. In this embodiment, a normally closed degassing valve is selected to exhaust air when power is turned on. It is connected to one end of the T-shaped three-way pipe 6 through a connecting pipe 4, and its circuit is connected to the B2 interface of the circuit board 10 accordingly.

The T-shaped three-way pipe 6 is a conventional commercial product, and a pipe with an outer diameter of 4 mm can be selected.

The air pump 7 is a conventional commercially available product, and a 370 single-hole micro air pump can be selected. The air pump works when the power is on to inflate the airbag, and stops inflating when the power is off. It is connected to one end of the T-shaped three-way pipe 6 through a connecting pipe 4, and its circuit is correspondingly connected to the B3 interface of the circuit board 10.

The rechargeable battery 8 is a conventional commercially available product, and can be selected as a 1200mA, rechargeable No. 5 lithium battery, and its circuit is correspondingly connected to the B4 interface of the circuit board 10.

The pressure display 9 is a conventional commercial product, which is connected to the airbag through a connecting pipe and a T-shaped three-way pipe to display the actual airbag pressure.

When in use, the medical staff puts the cuff 1 containing the air bag and the heating pad 2 on the patient's upper arm, presses the control switch of the circuit board 10, and selects different modes: first, the air pump 7 starts to inflate the air bag, and the heating pad 2 gradually heats up to fully expose the blood vessels. At this time, the inflation is stopped and the venipuncture is performed. After the venipuncture operation is completed, the mode is changed to alternate inflation and deflation, and blood collection is performed until the blood collection process is completely completed, and the switch of the circuit board 10 is turned off. When the device needs to be removed, the medical staff opens the Velcro buckle to separate the cuff from the arm and remove it from the arm.

Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the protection scope of the invention.

Claims (5)

1. An electric venous blood sampling pressurizer, characterized in that it comprises a cuff (1) with a Velcro (3), an air bag is arranged inside the cuff (1), the air port of the air bag is connected to the first interface of the T-shaped three-way pipe (6), the second interface of the T-shaped three-way pipe (6) is connected to the inflation pump (7), and the third interface of the T-shaped three-way pipe (6) is connected to the deflation valve (5); the inner surface of the cuff (1) is connected to a heating pad (2), the inflation pump (7), the deflation valve (5), and the heating pad (2) are all connected to a circuit board (10) to be controlled by the circuit board (10), and the circuit board (10) is connected to a rechargeable battery (8). 2. An electric venous blood sampling pressurizer according to claim 1, characterized in that the circuit board (10) controls the inflation pump (7) and the deflation valve (5) to work independently or alternately in a cycle. 3. An electric venous blood sampling pressurizer according to claim 1, characterized in that the three interfaces of the T-shaped three-way pipe (6) are respectively connected to the inflation pump (7), the T-shaped three-way pipe (6), and the air bag through a connecting pipe (4). 4. An electric venous blood sampling pressurizer according to claim 3, characterized in that a pressure display (9) for monitoring and displaying the airbag pressure is connected to the connecting tube (4) connected between the T-shaped three-way tube (6) and the airbag. 5. An electric venous blood sampling pressurizer according to claim 1, characterized in that a waterproof cloth is adhered to the upper surface of the heating pad (2), and a heat-insulating cotton is adhered to the lower surface.