A self-balancing medical evacuation stretcher that provides body stabilization in disaster, rubble, and rugged terrain.

Abstract

This invention relates generally to medical devices and emergency aid equipment, and specifically to a self-balancing medical evacuation stretcher that maintains body stabilization during the evacuation of injured persons in disaster areas, debris fields, and rugged terrain, and operates without the need for an external power source.

Description

1 TARIFF 5 BODY STABILIZATION IN DISASTERS, DEBRIS, AND RUGGED TERRAIN. SUPPORTING AND SELF-BALANCING MEDICAL EVACUATION STRETCHER Technological Field: This invention enables the evacuation of injured people from disaster areas, rubble sites, and rugged terrain. 10 that maintains body stabilization during the process and operates without needing an external energy source. It relates to a self-balancing medical evacuation stretcher. State of the Art: The systems currently used for medical evacuation and patient transport are basically: They are grouped into three main categories. However, each of these systems, especially in disaster areas, In terms of wounded health in debris fields and unstructured rugged terrain conditions, 15 It has technical shortcomings that pose critical risks. Traditional spoon stretchers, backboards, and foldable field-type stretchers found in the literature. Stretchers have a completely rigid (fixed) and static structure. In these systems, any... Because there is no damping mechanism, the stepping frequency of the carrier personnel... Vertical accelerations (approximately 1-2 Hz) and ground disturbances directly affect 20 It is transmitted to the injured person's body. The amount of the substance in the injured person's body varies between 0.5g and 1.5g. These sudden loads, which cause micro-traumas, are especially common in spinal (spine) injuries. It significantly increases the risk of permanent paralysis or internal bleeding. More advanced systems include air-bearing or elastomeric wedge systems. Although it can partially absorb high-frequency vibrations, it has a 25% resistance to vibrations caused by the slope of the terrain. It is unable to balance the "roll-pitch" movements between the carriers. Differences in height or variations in the slope of the ground can affect the injured person's ability to stay on the stretcher continuously. slipping, loss of body stabilization, and consequently secondary injuries This causes exposure. Developed for military and advanced medical scenarios, the micro-30 features a gyroscopic sensor. Processor-controlled active stabilization stretchers attempt to solve the balance problem. However, their applicability in disaster areas is low. These systems are limited by battery life. energy dependencies, electronic structures sensitive to environmental factors such as dust and humidity. and their high weight affect the operational capabilities of rescue teams on the ground. This is a limitation. In the event of a mechanical failure, on-site repair of these devices takes almost 35%. It's impossible. 2 In light of the limitations described above, a passive (non-requiring external energy source) vehicle is recommended. a lightweight and durable (hybrid) system that can absorb both vertical impacts and angular deflections. The need for a mechanical / hydraulic stabilization system is clearly evident. Explanation of the Figures Figure 1 - General view of the stretcher from a perspective perspective. Figure 2 - Detailed view of the universal joint and center of gravity adjustment mechanism. 10 Figure 3 - Hydraulic circuit diagram view. Figure 4 - Side view showing the stretcher's stabilization on uneven terrain. References: 1. External main chassis 2. Wounded patient bed (Inner body) 15 3. Primary cardan ring 4. Secondary cardan ring 5. Central bearing 6. Left front hydraulic cylinder 7. Right front hydraulic cylinder 20 8. Left rear hydraulic cylinder 9. Right rear hydraulic cylinder 10. Main hydraulic distribution block (manifold) 11. Cross-transmission hoses 12. Flow restrictor orifice (valve) 25 13. Hydraulic fluid (Oil) 14. Telescopic shock-absorbing springs 15. Quick-locking pin (Lynch pin) 16. Adjustable handlebars 17. Center of gravity balancing rail 30 18. Liquid level indicator Description of the Invention: The system described in this invention can absorb both vibrations and tilt changes caused by external factors. mechanical system designed to dampen simultaneously in both the angular and vertical planes. It has an autonomous structure that integrates balancing and hydraulic transmission principles. 35 3 The system basically consists of an external main chassis (1) and 5 suspended in the center of this chassis. It consists of a wounded bed (2) body in which the wounded person is placed. The angular balance of the system is determined by the primary cardan ring (3) of the wounded bed (2) to the outer main chassis (1) and is provided by connecting it via a secondary cardan ring (4). A central bearing seat. (5) These rings (3, 4) are joined together by means of the rocking and pitching of the bed (2). swinging freely along its axes, independent of the movement of the carrier personnel. 10 It allows it to do so. Also, the center of gravity located on the lower surface of the bed (2) The leveling rail (17) is the platform according to the height and center of mass of the patient lying on it. by ensuring optimization, the system is always perpendicular to the direction of gravity. It helps it stay there. Damping of sudden jolts in the vertical plane is done by attaching 15 to the four corners of the outer main chassis (1). left front hydraulic cylinder (6), right front hydraulic cylinder (7), left rear hydraulic This is accomplished via cylinder (8) and right rear hydraulic cylinder (9). These cylinders (6, 7, 8, 9), via a main hydraulic distribution block (10) and cross transmission hoses (11) They are connected to each other by the principle of "communicating vessels". As a result of one of the carriers pressing on an uneven surface, the left front hydraulic cylinder (6) and the right 20 front hydraulic cylinder (7), left rear hydraulic cylinder (8) or right rear hydraulic cylinder (9) When the load on one of its units increases, the hydraulic fluid (13) inside it rapidly It is compressed and transferred to the cylinder at the opposite corner via the cross conveyor hoses (11). Closed-loop pressure transfer prevents sudden acceleration of the wounded bed (2); flow Thanks to the restricting orifice (12), the flow rate and damping stiffness of this transfer can be adjusted. 25 In addition to the hydraulic mechanism, the system includes telescopic structures surrounding each cylinder. Shock absorbing springs (14) are found; these springs (14) absorb small vibrations of high frequency. This reduces the load on the hydraulic system. At the end of the operation or when the stretcher is fixed in place. When the primary cardan needs to remain rigid on the ground, the quick-locking pin (15) is used to lock the ground. The ring (3) and secondary cardan ring (4) are fixed to the outer main chassis (1) and the entire system 30 Mobility is locked. In order to facilitate the operational use of the system, The adjustable holder whose position can be customized according to the user is located on the outer main chassis (1). The arms (16) are located. In addition, the efficiency of the hydraulic damping mechanism Main hydraulic distribution block (10) for protection and monitoring of the oil level in the system A liquid level indicator (18) that works in integration with the system has been included. 35

Claims

4 REQUIREMENTS 5 1. The present invention applies to disaster areas, debris sites, mining accidents, and structural integrity. in deteriorated, rugged terrain conditions, the life-threatening risks of critically injured patients self-balancing medical evacuation that minimizes evacuation It relates to the stretcher; Outer main chassis (1), Wounded bed (2), Primary cardan ring (3), Secondary cardan ring (4), Central bearing housing (5), Left front hydraulic cylinder (6), 10 Front right hydraulic cylinder (7), Rear left hydraulic cylinder (8), Rear right hydraulic cylinder (9), Main hydraulic distribution block (10), Transmission hoses (11), Flow restrictor valve (12), Hydraulic fluid (13), Telescopic shock absorber springs (14), Quick locking pin (15), Adjustable handlebars (16), Center of gravity balancing rail (17) and Liquid It is characterized by the level indicator (18). 15