A tourniquet for emergency treatment of trauma at the junction of the torso and lower limbs.

Abstract

This utility model discloses a tourniquet for emergency treatment of combat trauma at the junction of the torso and lower limbs, comprising a pelvic tightening band and a pressure bag. Both sides of the pelvic tightening band are fixedly connected to ring handles. One ring handle has a fixing strap with perforations distributed along its length. The other ring handle and fixing strap are fitted with a buckle. A hook-and-loop fastener is provided at the end of the fixing strap that passes through the buckle. A base plate is fixedly provided on the bottom surface of the pressure bag, and the base plate is attached to the inner side of the pelvic tightening band. A vertical bar is provided on the strap on one side of the female buckle of the buckle, and a collar is provided on the side of the vertical bar. Twisting the vertical bar further tightens the strap and the ring handle and inserts it into the collar. This utility model aims to provide a tourniquet with a lightweight pressure structure that can provide precise compression hemostasis control in the groin area of ​​the lower limbs, adaptable to different body sizes.

Description

Technical Field

[0001] This utility model relates to the field of medical emergency equipment technology, and in particular to a tourniquet for emergency treatment of combat trauma at the junction of the torso and lower limbs. Background Technology

[0002] In pre-hospital emergency care and combat trauma treatment, controlling bleeding at the junction of the trunk and lower limbs, especially in the groin area, is a challenging problem. Conventional tourniquets for the limbs, such as rotational tourniquets or cassette tourniquets, cannot be used in this area. Furthermore, because it contains vital blood vessels such as the external iliac artery and femoral artery, large vessel bleeding cannot be effectively controlled by traditional compression methods alone. Without surgical support, the wounded may die from massive hemorrhage during transport. Currently, tourniquets for the groin area have vague dimensions and are not designed specifically for the vascular distribution and anatomical structure of the compression site, leading to inaccurate positioning and affecting the timeliness of hemostasis. This invention addresses these problems by disclosing a tourniquet for combat trauma emergency care at the junction of the trunk and lower limbs. Designed based on the human skeletal and vascular structure of the groin area, it can adapt to different body sizes. Combined with the shape of the junction area, it features a lightweight pressure structure that allows for rapid hemostasis, significantly improving the success rate of emergency care. It is suitable for use in pre-hospital emergency care, disaster relief, or combat scenarios. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and to provide a tourniquet that can accurately compress and control hemostasis in the groin area of ​​the lower limbs, adapt to different body sizes, and has a lightweight pressure structure.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0005] A tourniquet for emergency treatment of combat trauma at the junction of the torso and lower limbs includes a pelvic tightening band and a pressure bag. Both sides of the pelvic tightening band are fixedly connected to ring handles. One ring handle has a fixing strap with perforations distributed along its length. The other ring handle and fixing strap are fitted with a buckle. A hook-and-loop fastener is provided on the side of the fixing strap that passes through the buckle. At least three hook-and-loop fasteners are provided, located at the ends and middle of the fixing strap. A base plate is fixedly provided on the bottom surface of the pressure bag, and the base plate is attached to the inner side of the pelvic tightening band. A vertical bar is provided on the strap on the female buckle side of the buckle, and a collar is provided on the side of the vertical bar. Twisting the vertical bar further tightens the strap and ring handle and inserts it into the collar. The base plate is injection molded from polycarbonate material, is square, and has strip-shaped reinforcing ribs on the back, with a through groove in the middle of the reinforcing ribs.

[0006] Furthermore, the pressurized airbag is connected to an air guide tube, the other end of which is equipped with an inflatable airbag. The air guide tube is equipped with a one-way valve, and the inflatable airbag is equipped with a deflation valve.

[0007] Furthermore, the pressurized airbag is injection molded from thermoplastic polyurethane material, and the diameter of the top frustum of the pressurized airbag is 54-58mm. A cross-shaped reinforcing rib is fixedly provided on the inner plane of the top frustum.

[0008] Furthermore, the length of the ring handle is 100-120mm, the length of the pelvic tightening band is 760-800mm and the width is 110-130mm, and the length of the fixing band is 490-520mm and the width is 50mm.

[0009] Compared with the prior art, the present invention has the following beneficial effects:

[0010] This utility model is designed for the external dimensions of the junction between the human torso and lower limbs. It has a large structural strength, is applicable to the groin area, and is suitable for various body types of injured persons. It is simple to use, easy to learn and use, and has significant effects. It is suitable for use in pre-hospital emergency care, disaster or war scene and other scenarios. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the pelvic tightening belt and fixing belt in this utility model;

[0013] Figure 3 This is a schematic diagram of the structure of the pressurized airbag in this utility model;

[0014] Figure 4 This is a schematic diagram of the structure of the bottom plate in this utility model;

[0015] Figure 5 This is a schematic diagram of the reinforcing ribs inside the pressurized airbag in this utility model;

[0016] Figure 6 Pressure distribution cloud maps for circular and square base plates;

[0017] Figure 7 The simulated pressure distribution diagram is shown for a pressurized airbag with a frustum or truncated cone top.

[0018] Figure 8 Pressure distribution cloud map for a pressurized airbag with a frustum or truncated cone top.

[0019] Figure label:

[0020] 1-Pelvic tightening belt, 2-Compression airbag, 3-Inflatable airbag, 4-Fixing strap, 5-Snap buckle, 6-Ring handle, 7-Base plate, 8-One-way valve, 9-Air tube, 10-Deflator valve, 11-Hook and loop fastener, 12-Reinforcing rib, 13-Vertical bar, 14-Loop ring. Detailed Implementation

[0021] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] like Figures 1 to 5 As shown, a tourniquet for emergency treatment of combat trauma at the junction of the torso and lower limbs includes a pelvic tightening band 1 and a pressure bag 2. Both sides of the pelvic tightening band 1 are fixedly connected to ring handles 6. One ring handle 6 has a fixing strap 4 with perforations distributed along its length. The other ring handle 6 and the fixing strap 4 are fitted with buckles 5. A hook and loop fastener 11 is provided at one end of the fixing strap 4 that passes through the buckle 5. A base plate 7 is fixedly provided on the bottom surface of the pressure bag 2, and the base plate 7 is attached to the inner side of the pelvic tightening band 1. A vertical bar 13 is provided on the strap on one side of the female buckle of the buckle 5, and a collar 14 is provided on the side of the vertical bar 13. Twisting the vertical bar 13 further tightens the strap and the ring handle 6 and inserts it into the collar 14.

[0023] The base plate 7 is injection molded from polycarbonate material. The base plate 7 is square and has reinforcing ribs 12 on its back, with through grooves in the middle of the ribs 12. The reinforcing ribs 12 provide greater structural strength to the base plate 7, preventing deformation when the pressure from the inflating airbag 2 causes excessive pressure, thus ensuring sufficient support. The through grooves on the reinforcing ribs 12 are designed to reduce shrinkage of the plastic material during injection molding and prevent deformation during production. Because the human body surface is uneven and the fabric of the fixing strap can deform, directly using the top frustum of the airbag to compress blood vessels cannot guarantee that the frustum surface will completely conform to the body and apply pressure evenly. In practice, the frustum is often tilted at a certain angle when pressing on the body. In this state, the frustum may cover the blood vessel but fail to provide sufficient pressure. Furthermore, because the tourniquet at the junction of the torso and lower limbs is fixed by wrapping around the groin area, with the restraint points on both sides of the injured person's body, after the pressure bag is inflated, the bulge of the fixation band at the center of the body will inevitably be greater than that on the sides, easily causing the pressure bag to tilt and affecting the distribution of hemostatic pressure. Figure 6 As shown, the left image is the pressure distribution diagram of the circular base plate, and the right image is the pressure distribution diagram of the square base plate. The square base plate is designed with reinforcing ribs 12, which increases the area of ​​the fixing band 4 at the junction and improves stability. As can be seen from the pressure distribution cloud diagram, the pressure distribution of the square base plate is more uniform than that of the circular base plate, which helps to provide a stable hemostatic effect.

[0024] The pressurizing airbag 2 is connected to an air delivery tube 9, with an inflatable airbag 3 at the other end of the air delivery tube 9. The air delivery tube 9 is equipped with a one-way valve 8 and a deflation valve 10. When the pressurizing airbag 2 needs to be inflated, the inflatable airbag 3 is manually squeezed. After disconnecting the connection, the one-way valve 8 prevents the pressurizing airbag 2 from deflating. Deflating is achieved by connecting the inflatable airbag 3 and then releasing the deflation valve 10. The pressurizing airbag 2 is injection molded from thermoplastic polyurethane material. The diameter of the top frustum of the pressurizing airbag 2 is 54-58 mm, and a cross-shaped reinforcing rib 12 is fixedly installed on the inner plane of the top frustum. The size of the top frustum is related to the groin hemostasis area. According to relevant literature, the femoral artery compression point is located in the central area of ​​the line connecting the anterior superior iliac spine and the pubic tubercle. Therefore, the size of the compression component is determined to be half the size of this line, i.e., 54-58 mm, to cover the compression point. Meanwhile, the cross-shaped reinforcing rib 12 can support the top truncated cone, providing support for the pressure bag 2 during hemostasis and preventing the top truncated cone from collapsing inward after force is applied.

[0025] The ring handle 6 has a length of 100-120mm, the pelvic tightening band 1 has a length of 760-800mm and a width of 110-130mm, and the fixing band 4 has a length of 490-520mm and a width of 50mm. These effective lengths are based on research on Chinese anthropometric dimensions, referencing relevant national standards such as "GB10000-88 Chinese Adult Anthropometric Dimensions" and "GBT 13547-1992 Workspace Anthropometric Dimensions," as well as national military standards. The effective length of the fixing band 4 is determined by the width between the two anterior superior iliac spines and the effective length of the Velcro fit. The effective length of the pelvic tightening band 1 is then calculated from the hip circumference. The pelvic tightening band 1 should cover the area from the buttock peak to the perineum; therefore, its width is determined by the difference between the height of the buttock peak and the height of the perineum in a standing position.

[0026] In use, the male and female buckles of the buckle 5 are respectively set on the fixing strap 4 and the ring handle 6 on the other side. During operation, first place the injured person in a supine position, slightly raise the injured person's buttocks, pass the fixing strap 4 through the bottom of the injured person's body, and place the pelvic tightening strap 1 under the injured person's buttocks. Position the pressure bag 2 to the compression position, fasten the buckle 5, and fold the fixing strap 4 in the opposite direction. Then, pull the ring handle 6 to both sides to tighten and attach the hook and loop fastener 11. The fixing strap 4 has a soft fiber side, and the hook and loop fastener 11 has a hard fiber side. At least three hook and loop fasteners 11 are provided, respectively located at the ends and middle of the fixing strap 4, so that the hook and loop fasteners 11 can be attached to any position of the fixing strap 4, forming a ring structure to tighten the groin area. To further tighten the tourniquet, the vertical rod 13 can be screwed on. Since the vertical rod 13 has straps on both sides that fit into the ring handle 6, after screwing on the vertical rod 13, the ring handle 6 can be pulled to tighten the tourniquet again. Then, the vertical rod 13 is rotated to a horizontal position and inserted into the collar 14, where the collar 14 prevents the vertical rod 13 from resetting.

[0027] like Figure 7 As shown, the left figure is a simulated pressure distribution diagram when the top of the pressurized airbag 2 is a frustum, and the right figure is a simulated pressure distribution diagram when the top of the pressurized airbag 2 is a square. Figure 8 As shown, the left image is a pressure distribution cloud map of the top of the pressurized airbag 2 being a frustum of a cone, and the right image is a pressure distribution cloud map of the top of the pressurized airbag 2 being a square truncated cone. Figure 7 and Figure 8 It can be seen that the truncated cone shape applies pressure more evenly than the square truncated cone shape, and can more effectively cover the hemostatic pressure area.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tourniquet for emergency treatment of combat trauma at the junction of the trunk and lower limbs, comprising a pelvic tightening band (1) and a pressure bag (2), characterized in that: Both sides of the pelvic tightening band (1) are fixedly connected with ring handles (6), one of the ring handles (6) has a fixing strap (4) and the fixing strap (4) has perforations distributed along the length direction, and the other ring handle (6) and the fixing strap (4) are equipped with buckles (5); the fixing strap (4) is provided with hook and loop fasteners (11) on the side where it passes through the buckles (5); at least three hook and loop fasteners (11) are provided, respectively located at the end of the fixing strap (4) and the middle of the fixing strap (4); the pressure airbag (2) The bottom surface of the pelvic tightening belt (1) is fixedly provided with a base plate (7), which is attached to the inner side of the pelvic tightening belt (1); a vertical rod (13) is provided on the strap on one side of the female buckle (5), and a collar (14) is provided on the side of the vertical rod (13). After the vertical rod (13) is twisted, the strap and the ring handle (6) can be further tightened and inserted into the collar (14); the base plate (7) is made of polycarbonate material by injection molding. The base plate (7) is square and has a strip-shaped reinforcing rib (12) on the back. A through groove is provided in the middle of the reinforcing rib (12).

2. A tourniquet for emergency treatment of combat trauma at the junction of the torso and lower limbs as described in claim 1, characterized in that: The pressurized airbag (2) is connected to an air guide tube (9), and an inflatable airbag (3) is provided at the other end of the air guide tube (9). A one-way valve (8) is provided on the air guide tube (9), and a deflation valve (10) is provided on the inflatable airbag (3).

3. A tourniquet for emergency treatment of combat trauma at the junction of the torso and lower limbs as described in claim 2, characterized in that: The pressurized airbag (2) is made of thermoplastic polyurethane material by injection molding. The diameter of the top frustum of the pressurized airbag (2) is 54-58mm, and a cross-shaped reinforcing rib (12) is fixedly provided on the inner plane of the top frustum.

4. A tourniquet for emergency treatment of combat trauma at the junction of the torso and lower limbs as described in claim 1, characterized in that: The ring handle (6) is 100-120mm long, the pelvic tightening band (1) is 760-800mm long and 110-130mm wide, and the fixing band (4) is 490-520mm long and 50mm wide.

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