Pneumatic blood pumping device and method of use thereof
A pneumatic and tracheal technology, applied in the field of medical equipment, can solve problems such as blocked arterial blood flow, limb injuries, and tight patients
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Embodiment 1
[0027] refer to figure 2 and image 3 , a pneumatic blood drawing device provided by the present invention is used as an auxiliary tool for blood drawing, and includes a cuff 10, a main control unit 11, an inflation unit 12 connected to the main control unit 11, a timing unit 13 and a deflation unit 14.
[0028] In this embodiment, the size of the cuff 10 is 8*43 cm, suitable for wrists and arms, and used to be tied upstream of the venipuncture site. The specific size of the cuff 10 does not constitute a limitation of the present invention. The front and back of the two ends of the cuff 10 are connected by Velcro or Velcro for easy tying. In other embodiments, the connection method of the cuff can also be other feasible connection methods. For example, the cuff 10 can also be a ring sleeve, which can be directly placed on the wrist or arm, so the specific connection method of the cuff does not constitute Limitations of the Invention.
[0029] The inflatable unit 12 is prov...
Embodiment 2
[0039] This embodiment is based on the first embodiment, and the same or similar parts as the first embodiment will not be described again. The present invention can also include an air pressure detection unit 18, which is connected with the main control unit 11 and the air outlet pipe 121 of the inflation unit 12, and is used to detect the pressure value in the air pipe 15, so that the main control unit 11 can compare the pressure value in the air pipe 15 with the preset pressure value. Set the pressure value for comparison, and control the inflation unit 12 to operate with a corresponding duty cycle (Duty Cycle) according to the comparison result. Since the inflatable unit 12 may leak air when it is stationary or rotates at a slow speed, the inflatable unit 12 needs to maintain an appropriate rotational speed to fix the pressure in the air pipe 15 at a certain air pressure. For example, if the pressure value in the trachea 15 is higher than the preset pressure value of 5mmHg...
Embodiment 3
[0042] The present invention also provides a method for using the pneumatic blood pumping device, comprising the following steps:
[0043] S101: tie the cuff 10 on the limb;
[0044] The extremity can be anywhere that requires venipuncture, such as the wrist or arm;
[0045] S102: Control the operation of the inflation unit 12 through the main control unit 11, and the inflation unit 12 inflates the cuff 10 through the air tube 15 according to the default pressure value;
[0046] After the inflatable unit 12 is in operation, the pressure in the cuff 10 gradually increases, thereby compressing the limbs to facilitate blood collection;
[0047] S103: Control the air leakage unit 14 to close through the main control unit 11;
[0048] The steps of S102 and S103 are in no particular order, and can also be performed at the same time. When the air leakage unit 14 is closed, the gas can basically only enter and exit, so that the pressure required for blood collection can be reached ...
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