Rotary-extrusion-type intelligent tourniquet

Abstract

The invention provides a rotary-extrusion-type intelligent tourniquet. The rotary-extrusion-type intelligent tourniquet comprises a display and main control unit, a force application and unloading unit, a sensor and power supply unit and a wear unit. An LCD display module and a main control circuit board are arranged inside a shell body of the display and main control unit, and function buttons are arranged at the outer side of the shell body. The force application and unloading unit mainly comprises a ratchet handle and a base, an unhooking turn block and a synchronous limiting block are arranged at one side of the handle, and a twisting rope sleeve is arranged in an upper chamber of the base. The sensor and power supply unit mainly comprises a pressure sensor module, a pulse sensor module and a power supply module. The wear unit mainly comprises a twisting rope, a bandage, a sticky hook integrated hook & loop fastener and a stretching band. The rotary-extrusion-type intelligent tourniquet can act on four limbs of a wounded person, and the functions of real-time displaying of a bleeding arresting pressure size and distal-end pulse strength, automatic-timing displaying of buttons and locking of a force application process, and the like are achieved; and unhooking is simple and convenient, so that portability and reliability are guaranteed, and meanwhile, the wounded person or medical personnel is assisted to more correctly and effectively implement bleeding arresting first-aid.

Description

Technical field [0001] The invention relates to the field of medical equipment, in particular to a spinning type intelligent tourniquet used for medical emergency. Background technique [0002] In daily life and war, open wound bleeding, when the blood loss reaches more than 20% of the total blood volume, it will cause the wounded to experience hemorrhagic shock or even death. Therefore, when faced with severe trauma and bleeding, it should be taken in time Effective hemostasis measures. [0003] At present, there are a variety of portable tourniquet designs that can be operated with one hand and are widely used. A typical design is: Chinese patent document CN28883667A discloses an emergency tourniquet, the first end of which is fixed on the first side of the base, and Pass through the tourniquet handle and exit from the second side of the base. After extending a sufficient distance, the strap penetrates into the multi-frame structure containing the self-tightening member. The sec...

AI Technical Summary

Problems solved by technology

This type of tourniquet is designed to record the start time of hemostasis by handwriting on the time stamp, which cannot realize automatic timing and time reminders, which may lead to excessive binding time of the tourniquet and cause limb necrosis

[0006] Second, higher tourniquet pressure will lead to direct pressure injury, resulting in nerve paralysis, blood vessel or tissue damage, and lower tourniquet pressure will reduce the hemostatic effect, directly threatening the life safety of the wounded

At present, few common tourniquet designs can achieve a relatively fine and continuous pressurization process, such as the above-mentioned tourniquet, when the handle of the tourniquet is rotated for one revolution, it can pass through the eyelet of the ring for locking, and the final pressure is a certain amount. Step-like rise, easy to cause the pressure to be too high or too low

[0007] Third, clinical evidence suggests that initial application of a tourniquet may be effective, and after a minute, muscle tension under the tourniquet may decrease, causing the tourniquet to fail, so re-tightening or adjustment of the hemostat may be required for a relatively longer hemostasis time The tourniquet is also an inevitable problem, and this type of design does not realize the function of monitoring the pressure of the tourniquet

At the same time, even if the operator finds that the tourniquet fails in time, he will face problems such as inaccurate pressure application and re-recording of time nodes, which is very inconvenient

[0008] Fourth, when the existing tourniquet design is actually applied, it is necessary to judge whether hemostasis is effective by feeling the strength of the distal pulse. However, for a single-person scene, there is a problem that it cannot be synchronized with the pressure application, which will delay the hemostasis time And other issues

This type of design can provide appropriate tourniquet pressure based on real-time detected blood pressure signals, and includes a timing display function for hemostasis, avoiding the danger caused by excessive use of the tourniquet, but the existence of the electric air pump and exhaust valve and the The pressure of the airbag tourniquet is completely dependent on the electric drive characteristics, so the portability and reliability of the tourniquet cannot be guaranteed

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