Automatic inflatable air bag compression hemostat

Abstract

The invention discloses an automatic inflatable air bag compression hemostat which comprises a bandage, an air bag, an air bottle, a pressing plate, a firing pin, a firing rod and a valve body, the air bag is arranged on the inner side of the pressing plate, a first tubular connecting part and a second tubular connecting part are arranged on the valve body, the first tubular connecting part is connected with the air bag, a bottle opening of the air bottle is connected to the second tubular connecting part, and the firing pin is arranged on the valve body. Compressed gas is filled in the gas cylinder, a sealing film is sealed at a bottle opening, the firing pin is arranged in front of the sealing film at the bottle opening of the gas cylinder and used for piercing the sealing film, the firing rod is arranged on the valve body and can push the firing pin towards the direction of the sealing film when the firing rod is pressed inwards, and the bandage is connected to the pressing plate. The method is convenient to operate.

Description

Technical Field

[0001] The invention relates to the technical field of rapid hemostasis, and in particular to an automatic inflatable airbag compression hemostat. Background Art

[0002] In emergency medical rescue, quickly and effectively stopping bleeding is one of the key steps to save lives. Methods of stopping bleeding include direct pressure, the use of tourniquets, hemostatic powder, hemostat, etc. Among them, the hemostat can provide more stable and effective pressure, and can better achieve bleeding in many cases.

[0003] There are roughly two types of existing hemostats: one is provided with a knob, and the compression member is pushed forward to apply pressure to the wound by rotating the knob; the other is to inject air into the airbag through a syringe, and the inflated airbag applies pressure to the wound.

[0004] However, the operation process of rotating the knob and injecting gas through the syringe is slow and not fast enough. In emergency medical assistance, time is very important for patients, so a hemostat that can stop bleeding through quick operation is designed. Summary of the invention

[0005] The purpose of the present invention is to provide an automatic inflatable airbag compression hemostat, which is easy to operate.

[0006] The purpose of the present invention is achieved through the following technical solutions:

[0007] An automatic inflatable airbag compression hemostat, characterized in that it includes a bandage, an airbag, a gas cylinder, a pressure plate, a firing pin, a firing rod and a valve body, the airbag is arranged on the inner side of the pressure plate, the valve body is provided with a first tubular connecting part and a second tubular connecting part, the first tubular connecting part is connected to the airbag, the bottle mouth of the gas cylinder is connected to the second tubular connecting part, the gas cylinder is filled with compressed gas and is sealed with a sealing film at the bottle mouth, the firing pin is directly in front of the sealing film arranged at the bottle mouth of the gas cylinder, and is used to pierce the sealing film, the firing rod is arranged on the valve body, and when the firing rod is pressed inward, the firing pin can be pushed toward the sealing film, and the bandage is connected to the pressure plate.

[0008] A further technical solution of the present invention is: the airbag compression hemostat also includes a pressure regulating component, the valve body is also provided with a third tubular connecting part, the pressure regulating component is arranged in the third tubular connecting part, and the pressure regulating component can adjust the size of the space in the third tubular connecting part connected to the airbag to adjust the pressure of the inflated airbag.

[0009] A further technical solution of the present invention is: the pressure regulating assembly includes a piston and a threaded regulating rod, the piston is fitted into the third tubular connecting part, the threaded regulating rod extends into the third tubular connecting part and is connected to the piston, and the threaded regulating rod is threadedly connected to the outer end of the third tubular connecting part.

[0010] A further technical solution of the present invention is: a nut is fixedly provided at the outer end of the third tubular connecting part, and a threaded adjusting rod passes through the nut and is bolted to the nut.

[0011] A further technical solution of the present invention is: the valve body is also provided with a fourth tubular connecting part perpendicular to the second tubular connecting part, the firing pin is arranged inside the second tubular connecting part, the firing pin can move along the inside of the second tubular connecting part, the end of the firing pin facing the sealing membrane is a pointed end, and the other end of the firing pin is provided with a first conical surface, the first conical surface of the firing pin is located at the position where the second tubular connecting part and the fourth tubular connecting part are connected, the firing rod is sealably inserted into the fourth tubular connecting part of the valve body, and the inner end of the firing rod is provided with a second conical surface, and the firing pin can be pushed by the cooperation of the second conical surface and the first conical surface during the process of pressing the firing rod inward.

[0012] A further technical solution of the present invention is: a sealing cover is fixedly provided on the fourth tubular connecting part of the valve body, the firing rod passes through the sealing cover, a sealing ring is provided on the outer wall of the firing rod, and the sealing ring is tightly attached to the inner wall of the fourth tubular connecting part of the valve body to form a seal.

[0013] A further technical solution of the present invention is: a limiting flange is provided at the outer end of the sealing cover, a spacing is provided between the limiting flange and the end face of the fourth tubular connecting part, a clamping ring is provided on the firing rod, and the clamping ring is located between the limiting flange and the end face of the fourth tubular connecting part.

[0014] A further technical solution of the present invention is that a through groove penetrating along the length direction for gas to pass through is provided on the striker.

[0015] A further technical solution of the present invention is: a sleeve is provided in the middle of the airbag, the sleeve passes through the through hole in the middle of the pressure plate, and the first tubular connecting part of the valve body is inserted into the sleeve and sealed and fixedly connected together.

[0016] A further technical solution of the present invention is that connection holes are respectively provided at both ends of the pressing plate, and the binding straps pass through the connection holes for connection.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. When the airbag compression hemostat of the present invention is used, the firing rod is pressed inward so that the firing pin pierces the sealing film of the gas cylinder. The gas in the gas cylinder will be directly filled into the airbag through the valve body, so that the airbag will swell and press on the wound, and hemostasis can be achieved immediately. The operation is simple, convenient and fast, which can buy more time for the doctor's first aid.

[0019] 2. The present invention further provides a pressure regulating component. When the airbag is filled with gas, the pressure regulating component can be used to enlarge or reduce the space in the third tubular connecting part of the valve body that is connected to the airbag, thereby adjusting the pressure of the airbag on the wound, which is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a three-dimensional schematic diagram of an airbag compression hemostat according to an embodiment of the present invention;

[0021] Figure 2 is a schematic diagram of an explosion of the airbag compression hemostat according to an embodiment of the present invention with the bandage hidden;

[0022] Figure 3 is a cross-sectional schematic diagram of the airbag compression hemostat according to an embodiment of the present invention with the bandage hidden;

[0023] Figure 4 is a three-dimensional schematic diagram of a firing pin according to an embodiment of the present invention;

[0024] Figure 5 is a three-dimensional schematic diagram of a valve body according to an embodiment of the present invention;

[0025] Figure 6 It is a cross-sectional schematic diagram of the airbag compression hemostat according to the embodiment of the present invention after the firing rod is pressed inward and the threaded adjustment rod is adjusted outward when in use.

[0026] Meaning of reference numerals in the figure:

[0027] 1-air bag; 1.1-casing; 2-valve body; 2.1-first tubular connection; 2.2-second tubular connection; 2.3-third tubular connection; 2.4-fourth tubular connection; 2.5-threaded hole; 3-threaded adjustment rod; 3.1-rotating head; 3.2-circular stop plate; 4-gas cylinder; 4.1-external thread; 4.2-sealing membrane; 5-firing rod; 5.1-second conical surface ;5.2-pressing head;5.3-fixing groove;5.4-annular groove;6-pressing plate;6.1-connecting hole;6.2-perforation;7-binding strap;8-sealing cover;8.1-limiting flange;9-nut;10-Velcro;11-sealing ring;12-circlip;13-striker;13.1-through groove;13.2-tip;13.3-first conical surface;14-sealing pad;15-piston. DETAILED DESCRIPTION

[0028] The present invention is further described below in conjunction with embodiments.

[0029] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0030] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0031] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0032] Example:

[0033] like Figures 1 to 5 The automatic inflatable airbag compression hemostat of this embodiment is shown, which includes a strap 7, an airbag 1, a gas cylinder 4, a pressure plate 6, a firing pin 13, a firing rod 5, a valve body 2 and a pressure regulating assembly, wherein the pressure regulating assembly includes a piston 15 and a threaded regulating rod 3.

[0034] The pressing plate 6 is a strip-shaped long plate with a certain curvature and a certain hardness. The airbag 1 is fixedly arranged on the inner side of the pressing plate 6. The airbag 1 is used to press on the wound after being inflated to stop bleeding. A sleeve 1.1 is arranged in the middle of the airbag 1. The sleeve 1.1 is connected to the inside of the airbag 1 and passes through the through hole 6.2 in the middle of the pressing plate 6.

[0035] The valve body 2 is arranged on the outside of the pressure plate 6, and is provided with a first tubular connection part 2.1, a second tubular connection part 2.2, a third tubular connection part 2.3 and a fourth tubular connection part 2.4 which are connected to each other, wherein the second tubular connection part 2.2 and the fourth tubular connection part 2.4 are vertically connected together. The first tubular connection part 2.1 of the valve body 2 extends toward the sleeve 1.1, and the outer diameter of the first tubular connection part 2.1 matches the inner diameter of the sleeve 1.1. The first tubular connection part 2.1 of the valve body 2 is inserted into the sleeve 1.1 and is sealed and fixedly connected together, so that the valve body 2 is connected to the airbag 1.

[0036] The gas cylinder 4 is a small gas cylinder, which contains compressed gas, has a sealing film 4.2 at the bottle mouth, and has an external thread 4.1 on the outer wall of the bottle mouth. The small gas cylinder can be directly purchased and customized on the market. The compressed gas in the gas cylinder 4 of this embodiment is carbon dioxide.

[0037] A threaded hole 2.5 is provided at the port of the second tubular connecting portion 2.2 of the valve body 2, and a circular ring-shaped sealing gasket 14 is provided at the inner end of the threaded hole 2.5. The mouth of the gas cylinder 4 is threadedly connected to the threaded hole 2.5 of the second tubular connecting portion 2.2, and the end face of the mouth of the gas cylinder 4 is pressed against the sealing gasket 14 to form a seal.

[0038] The striker 13 is arranged inside the second tubular connection part 2.2, in front of the sealing film 4.2 of the bottle mouth of the gas cylinder 4. The striker 13 can move along the inside of the second tubular connection part 2.2, and can pierce the sealing film 4.2 after the striker 13 moves toward the sealing film 4.2. The end of the striker 13 facing the sealing film 4.2 is a tip 13.2, and the other end of the striker 13 is provided with a first conical surface 13.3. The first conical surface 13.3 of the striker 13 is located at the position where the second tubular connection part 2.2 is connected to the fourth tubular connection part 2.4. And, as Figure 3 and Figure 4 As shown, a through groove 13.1 is provided on the side wall of the striker 13. The through groove 13.1 penetrates the striker 13 along the length direction, and the through groove 13.1 is used for the passage of gas.

[0039] The outer end of the fourth tubular connecting part 2.4 of the valve body 2 is fixedly provided with a sealing cover 8, and the outer end of the sealing cover 8 is provided with a limiting flange 8.1, and a distance is provided between the limiting flange 8.1 and the end face of the fourth tubular connecting part 2.4. The firing rod 5 penetrates from the middle hole of the sealing cover 8 and is inserted into the fourth tubular connecting part 2.4. Two sealing rings 11 are provided on the outer wall of the firing rod 5, and the sealing rings 11 are embedded and fixed in the fixing groove 5.3 on the outer wall of the firing rod 5. The part of the sealing ring 11 protruding from the fixing groove 5.3 is tightly attached to the inner wall of the fourth tubular connecting part 2.4 of the valve body 2 to form a seal. An annular groove 5.4 with a certain width is provided on the outer wall of the firing rod 5, and a clamping ring 12 is provided at the annular groove 5.4. The clamping ring 12 is located between the limiting flange 8.1 and the end face of the fourth tubular connecting part 2.4, and the movable range of the firing rod 5 is limited by the clamping ring 12.

[0040] The outer end of the firing rod 5 is provided with a pressing head 5.2, and the inner end of the firing rod 5 is provided with a second conical surface 5.1, which is used to cooperate with the first conical surface 13.3. When the firing rod 5 is pressed inward, the second conical surface 5.1 will abut against the first conical surface 13.3, and under the action of the second conical surface 5.1 and the first conical surface 13.3, the striker 13 is pushed, so that the striker 13 moves toward the bottle mouth of the gas cylinder 4, and finally the sealing film 4.2 of the gas cylinder 4 is pierced by the striker 13 to release the compressed gas in the gas cylinder 4.

[0041] The piston 15 is made of rubber, and its outer diameter is adapted to the inner diameter of the third tubular connection part 2.3. The piston 15 is plugged into the third tubular connection part 2.3 and can move inside the third tubular connection part 2.3. A nut 9 is fixedly provided at the outer end of the third tubular connection part 2.3, and the threaded adjustment rod 3 passes through the nut 9 and is bolted to the nut 9. The threaded adjustment rod 3 extends into the third tubular connection part 2.3, and the inner end of the threaded adjustment rod 2.3 is connected to the piston 15. The outer end of the threaded adjustment rod 3 is a rotating head 3.1. When in use, the threaded adjustment rod 3 can be rotated by the rotating head 3.1, thereby driving the piston 15 to move, so that the size of the space in the third tubular connection part 2.3 that is connected to the airbag 1 can be adjusted to adjust the pressure of the inflated airbag 1. The inner end of the threaded adjusting rod 2.3 is connected to the piston 15 in the following structure: a circular stopper plate 3.2 is provided at the inner end of the threaded adjusting rod 2.3, a circular connecting groove is provided in the piston 15, and the circular stopper plate 3.2 is embedded in the connecting groove of the piston 15.

[0042] The two ends of the pressing plate 6 are respectively provided with connection holes 6.1. Figure 1 As shown, one end of the strap 7 passes through the connection hole 6.1 at one end and is fixed together, and the other end of the strap 7 passes through the connection hole 6.2 at the other end and is connected together through the Velcro 10. The Velcro 10 allows the length of the strap 7 to be adjusted.

[0043] The use process of the airbag compression hemostat of this embodiment is as follows:

[0044] At the beginning, if Figure 3 As shown, the threaded adjustment rod 3 of the airbag compression hemostat is in a state of extending into the third tubular connecting part 2.3, the piston 15 is located at the inner end of the third tubular connecting part 2.3, the space inside the third tubular connecting part 2.3 is isolated by the piston 15, and the firing rod 5 is in an extended state.

[0045] In emergency hemostasis, the airbag compression hemostat is tied to the corresponding part of the human body through the strap 7. The tightness of the binding can be adjusted by adjusting the connection position of the Velcro 10. The airbag 1 is located in front of the wound, and then the firing rod 5 is pressed inward. The inner end of the firing rod 5 will push the firing pin 13 to move and pierce the sealing membrane 4.2 at the mouth of the gas cylinder 4. The compressed gas in the gas cylinder 4 will pass through the through groove 13.1 on the side wall of the firing pin 13 and directly fill into the airbag 1 through the valve body 2. The airbag 1 swells and presses on the wound to quickly stop bleeding. The operation can be completed in a short time and the operation is convenient. After the airbag 1 is inflated to quickly compress and stop bleeding on the wound, the doctor rotates the threaded adjustment rod 3 to adjust it as needed, and the piston 15 will follow the threaded adjustment rod 3 to move toward the outer end of the third tubular connection part 2.3, so that the space in the third tubular connection part 2.3 that is connected to the airbag 1 is gradually increased, and the space in the third tubular connection part 2.3 is continuously released. The gas in the airbag 1 will partially flow back into the space released in the third tubular connection part 2.3, so that the air pressure in the airbag 1 becomes smaller, thereby adjusting the pressure of the airbag 1 on the wound. At this time, Figure 6 As shown, it can be seen that the airbag compression hemostat of the present invention is also very convenient for adjusting the air pressure.

[0046] The pressure applied to the wound during use is determined by the doctor based on the location of the wound, the specific condition of the wound, the age of the patient, the on-site conditions, and other information, and then roughly adjusted using the threaded adjustment rod 3. The following lists several recommended pressure reference values ​​for different situations:

[0047] 1. The patient is an adult, and the injured part is the upper limb. When stopping bleeding, the pressure is generally 200-250 mmHg (about 27-33 kPa);

[0048] 2. The patient is an adult, and the injured part is the lower limb. When stopping bleeding, the pressure is generally 300-350 mmHg (about 40-47 kPa);

[0049] 3. When the patient is a child, the pressure used to stop bleeding should be halved.

[0050] The above embodiments of the present invention are not intended to limit the protection scope of the present invention, and the implementation modes of the present invention are not limited thereto. All other modifications, replacements or changes made to the above structures of the present invention based on the above contents of the present invention, in accordance with common technical knowledge and customary means in the art, without departing from the above basic technical ideas of the present invention, should fall within the protection scope of the present invention.

Claims

1. An automatic inflatable airbag compression hemostat, characterized in that: It includes a strap, an air bag, a gas cylinder, a pressure plate, a firing pin, a firing rod and a valve body, the air bag is arranged on the inner side of the pressure plate, the valve body is provided with a first tubular connecting part and a second tubular connecting part, the first tubular connecting part is connected to the air bag, the bottle mouth of the gas cylinder is connected to the second tubular connecting part, the gas cylinder is filled with compressed gas and is sealed with a sealing film at the bottle mouth, the firing pin is directly in front of the sealing film arranged at the bottle mouth of the gas cylinder, and is used to pierce the sealing film, the firing rod is arranged on the valve body, and can push the firing pin toward the sealing film when the firing rod is pressed inward, and the strap is connected to the pressure plate.

2. The automatic inflatable airbag compression hemostat according to claim 1, characterized in that: The airbag compression hemostat also includes a pressure regulating component. The valve body is also provided with a third tubular connecting portion. The pressure regulating component is arranged in the third tubular connecting portion. The pressure regulating component can adjust the size of the space in the third tubular connecting portion that is connected to the airbag to adjust the pressure of the inflated airbag.

3. The automatic inflatable airbag compression hemostat according to claim 2, characterized in that: The pressure regulating assembly includes a piston and a threaded regulating rod, wherein the piston is plugged in the third tubular connecting portion, the threaded regulating rod extends into the third tubular connecting portion and is connected to the piston, and the threaded regulating rod is threadedly connected to the outer end of the third tubular connecting portion.

4. The automatic inflatable airbag compression hemostat according to claim 3, characterized in that: A nut is fixedly disposed at the outer end of the third tubular connecting portion, and the threaded adjustment rod passes through the nut and is bolted to the nut.

5. The automatic inflatable airbag compression hemostat according to claim 1, characterized in that: The valve body is also provided with a fourth tubular connecting part perpendicular to the second tubular connecting part, the firing pin is arranged inside the second tubular connecting part, the firing pin can move along the inside of the second tubular connecting part, the end of the firing pin facing the sealing membrane is a pointed end, the other end of the firing pin is provided with a first conical surface, the first conical surface of the firing pin is located at the position where the second tubular connecting part and the fourth tubular connecting part are connected, the firing rod is sealably inserted into the fourth tubular connecting part of the valve body, the inner end of the firing rod is provided with a second conical surface, and the firing pin can be pushed by the cooperation of the second conical surface and the first conical surface during the process of pressing the firing rod inward.

6. The automatic inflatable airbag compression hemostat according to claim 5, characterized in that: A sealing cover is fixedly provided on the fourth tubular connecting portion of the valve body, the firing rod passes through the sealing cover, a sealing ring is provided on the outer wall of the firing rod, and the sealing ring is tightly attached to the inner wall of the fourth tubular connecting portion of the valve body to form a seal.

7. The automatic inflatable airbag compression hemostat according to claim 6, characterized in that: A limiting flange is provided at the outer end of the sealing cover, a distance is provided between the limiting flange and the end surface of the fourth tubular connecting portion, a clamping ring is provided on the firing rod, and the clamping ring is located between the limiting flange and the end surface of the fourth tubular connecting portion.

8. The automatic inflatable airbag compression hemostat according to claim 1, characterized in that: The striker is provided with a through slot penetrating along the length direction for gas to pass through.

9. The automatic inflatable airbag compression hemostat according to claim 1, characterized in that: A sleeve is provided in the middle of the airbag, and the sleeve passes through the through hole in the middle of the pressure plate. The first tubular connecting part of the valve body is inserted into the sleeve and sealed and fixedly connected together.

10. The automatic inflatable airbag compression hemostat according to claim 1, characterized in that: Both ends of the pressing plate are respectively provided with connection holes, and the binding belt passes through the connection holes for connection.

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