Air pressure tourniquet suitable for limb near-end operation

Abstract

The invention provides an air pressure tourniquet suitable for a limb near-end operation, and belongs to the technical field of air pressure tourniquets. Comprising an electric pump, a bearing mechanism, an air delivery pipe and an air pressure tourniquet, the air delivery pipe is installed at the air outlet end of the electric pump, a connection sealing mechanism is installed at the end of the air delivery pipe, the air pressure tourniquet is arranged at the tail end of the air delivery pipe, the connection sealing mechanism comprises an annular plate, and the annular plate is installed at one end of the air delivery pipe. The bottom of the annular plate is rotatably provided with a connecting plate, the sliding cylinder is connected to the outer portion of the air conveying pipe in a sleeving mode, the outer portion of the air conveying pipe is provided with a rubber cylinder, and the sliding cylinder and the annular plate are connected together through the rubber cylinder. The connecting plate is pushed by the push rod to rotate, the rubber cylinder can be unfolded, the outer surface of the rubber cylinder is tightly attached to the inner wall of the connecting cylinder, the sealing effect can be achieved, the problem that the sealing effect is poor due to the fact that a sealing ring is loosened is solved, and the air pressure tourniquet can be normally used.

Description

Technical Field

[0001] This invention relates to the field of pneumatic tourniquet technology, and more specifically, to a pneumatic tourniquet suitable for proximal limb surgery. Background Technology

[0002] In surgical procedures, tourniquets are used to tighten above the affected area to facilitate surgery on a patient's leg or arm, reducing bleeding and providing the surgeon with a clear view. However, existing tourniquets, by being tied above the affected area, cannot accurately determine whether the critical value of "just stopping arterial blood flow" has been reached, thus failing to effectively stop bleeding and leading to continuous blood loss. Therefore, pneumatic tourniquets are now used, which can effectively control the pressure and manage blood loss.

[0003] Because the pneumatic tourniquet is activated by a control device, gas is delivered to the tourniquet through the trachea, causing the air bladder inside the tourniquet to expand and apply pressure to the affected area to achieve a hemostatic effect. However, due to long-term use, the sealing ring at the connection between the trachea and the tourniquet may loosen, resulting in air leakage, which affects the sealing performance and the use of the tourniquet. Summary of the Invention

[0004] To overcome the above deficiencies, the present invention provides a pneumatic tourniquet suitable for proximal limb surgery that overcomes or at least partially solves the above technical problems.

[0005] This invention is implemented as follows: This invention provides a pneumatic tourniquet suitable for proximal limb surgery, comprising an electric pump, an air supply tube, and a pneumatic tourniquet. The air supply tube is installed on the air outlet of the electric pump, and a sealing mechanism is installed at the end of the air supply tube. The pneumatic tourniquet is positioned at the end of the air supply tube. The connection sealing mechanism includes: An annular plate is installed at one end of a gas transmission pipe, and a connecting plate is rotatably installed at the bottom of the annular plate. A sliding cylinder is sleeved on the outside of a gas supply pipe. A rubber cylinder is installed on the outside of the gas supply pipe, and the sliding cylinder is connected to an annular plate through the rubber cylinder. One end of the sliding cylinder is rotatably connected to a push rod, and one end of the push rod is rotatably connected to a connecting plate. Both the push rod and the connecting plate are located inside the rubber cylinder. An elastic positioning plate is installed on the outside of the gas pipeline and positioned inside the sliding cylinder. A limiting block is provided at one end of the elastic positioning plate. The receiving mechanism is installed on the pneumatic tourniquet and is used to connect the connecting sealing mechanism, so as to connect the gas supply tube to the receiving mechanism together.

[0006] In a preferred embodiment, the receiving mechanism includes a connecting cylinder and a limiting plate. One end of the connecting cylinder is open, and the limiting plate is fixedly installed inside the connecting cylinder in an annular shape. A groove is formed on the outer side of the limiting plate, and a spring is provided inside the groove. One end of the spring is stably connected to a buffer plate.

[0007] In a preferred embodiment, an air inlet pipe is fixedly installed at the other end of the connecting tube, the interior of the air inlet pipe is in communication with the interior of the connecting tube, and an inflatable airbag is installed inside the pneumatic tourniquet, with the air inlet connection end of the inflatable airbag being fixedly connected to the air inlet pipe.

[0008] In a preferred embodiment, an annular ring is fitted around the outside of the gas delivery pipe, an arc-shaped plate is fixedly installed on the side of the annular ring, and the gas delivery pipe is snapped into the inside of the concave part of the arc-shaped plate. The sliding cylinder is fitted around the outside of the arc-shaped plate and is slidably connected to the outside of the arc-shaped plate. Furthermore, an elastic positioning plate is installed at the opening of the arc-shaped plate.

[0009] In a preferred embodiment, a pressing block is fitted onto the outer surface of the sliding cylinder, and a sealing ring is also adhered to one side of the pressing block. The position of the sealing ring corresponds to the position of the buffer plate, and the pressing block is slidably installed into the interior of the connecting cylinder.

[0010] In a preferred embodiment, a connecting member is fixedly installed on the outside of the sliding cylinder. A round rod is installed on one side of the connecting member, and a connecting band is provided on the round rod. Several connecting bands are provided and surround the outside of the sliding cylinder.

[0011] In a preferred embodiment, the connector includes an annular bracket and connecting rods, the connecting rods being fixedly connected to the annular brackets in a vertical manner, and a plurality of connecting rods being vertically arranged, with a round rod fixedly installed between every two connecting rods.

[0012] In a preferred embodiment, the outer surface of the pneumatic tourniquet is provided with hook and loop fasteners, the hook and loop fasteners including a female hook and loop fastener and a female hook and loop fastener, which are respectively provided on two outer surfaces of the pneumatic tourniquet.

[0013] In a preferred embodiment, the rubber cylinder is 1 mm thick, and one end of the rubber cylinder is stably connected to the bottom of the annular plate, wherein the diameter of the annular plate is 5 mm larger than the diameter of the gas transmission pipe.

[0014] In a preferred embodiment, the electric pump is equipped with a pressure display screen and a time display screen, and also has control buttons for setting the pressure and time. A handle is fixedly installed on the top of the electric pump.

[0015] The present invention provides a pneumatic tourniquet suitable for proximal limb surgery, the beneficial effects of which include: 1. A sliding cylinder is slidably installed on one end of the gas delivery tube, and a rubber cylinder is installed on one end of the sliding cylinder. The rubber cylinder has a rotatable connecting plate and a rotatable push rod inside. An annular plate is stably installed on one end of the gas delivery tube. By pushing the connecting plate with the push rod, the connecting plate can be rotated, which can unfold the rubber cylinder and make the outer surface of the rubber cylinder tightly fit the inner wall of the connecting cylinder, which can achieve a sealing effect and avoid the problem of poor sealing effect caused by loose sealing ring, so that the pneumatic tourniquet can be used normally.

[0016] 2. By setting the connecting cylinder to a conical shape, the annular plate can be inserted into the connecting cylinder to abut against the conical surface of the connecting cylinder, preventing the air delivery pipe from moving. This facilitates the control of the push rod rotation, and the connecting plate unfolds the rubber cylinder. A movable buffer plate is set inside the connecting cylinder to reduce the pressure of the pressing block on the limiting plate.

[0017] 3. By installing a connector on the outside of the sliding cylinder, a round rod is set on the connector, and a connecting strap is tied to the round rod. The state of the connecting strap can indicate whether there is an air leak at the connection between the gas pipe and the connecting cylinder. If the connecting strap is moving, it proves that there is an air leak at the connection. Conversely, if it is stationary, there is no air leak at the connection. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of one end of the gas pipeline of the present invention; Figure 3 This is a schematic diagram of the connection structure between the connecting plate and the push rod of the present invention; Figure 4 This is a schematic diagram of the arc-shaped plate structure of the present invention; Figure 5 This is a schematic diagram of the connecting cylinder structure of the present invention; Figure 6 This is a schematic diagram of the internal structure of the connecting cylinder of the present invention; Figure 7 This is a schematic diagram showing the position of the inflatable airbag of the present invention.

[0020] In the diagram: 1. Electric pump; 2. Gas delivery pipe; 3. Pneumatic tourniquet; 4. Connecting sealing mechanism; 41. Annular plate; 411. Connecting plate; 42. Sliding cylinder; 421. Rubber cylinder; 422. Push rod; 43. Elastic positioning plate; 431. Limiting block; 5. Receiving mechanism; 51. Connecting cylinder; 52. Limiting plate; 6. Groove; 7. Spring; 8. Buffer plate; 9. Air inlet pipe; 10. Inflatable airbag; 11. Annular ring; 12. Arc plate; 13. Pressing block; 14. Sealing ring; 15. Connecting piece; 151. Annular bracket; 152. Connecting rod; 16. Round rod; 17. Connecting strap; 18. Female Velcro; 19. Female Velcro; 20. Air pressure display screen; 21. Time display screen; 22. Control button; 23. Handle. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example Reference Figures 1-7 This invention provides a technical solution: a pneumatic tourniquet suitable for proximal limb surgery, comprising an electric pump 1, a receiving mechanism 5, an air supply tube 2, and a pneumatic tourniquet 3. The air supply tube 2 is installed on the air outlet end of the electric pump 1, and a connecting sealing mechanism 4 is installed at the end of the air supply tube 2. The pneumatic tourniquet 3 is positioned at the end of the air supply tube 2. The connecting sealing mechanism 4 includes an annular plate 41, which is installed at one end of the air supply tube 2. A connecting plate 411 is rotatably installed at the bottom of the annular plate 41. A sliding cylinder 42 is sleeved on the outside of the air supply tube 2, and a rubber cylinder 421 is installed on the outside of the air supply tube 2, and the rubber cylinder 421 is connected to the outside of the air supply tube 2. Cylinder 421 connects sliding cylinder 42 and annular plate 41 together. One end of sliding cylinder 42 is rotatably connected to push rod 422. One end of push rod 422 is rotatably connected to connecting plate 411. Push rod 422 and connecting plate 411 are both located inside rubber cylinder 421. Elastic positioning plate 43 is installed outside gas delivery pipe 2 and is located inside sliding cylinder 42. One end of elastic positioning plate 43 is provided with limiting block 431. Receiving mechanism 5 is installed on pneumatic tourniquet 3 and is used to connect to connecting sealing mechanism 4, connecting gas delivery pipe 2 and receiving mechanism 5 together.

[0023] A sliding cylinder 42 is slidably installed on one end of the gas supply pipe 2, and a rubber cylinder 421 is installed on one end of the sliding cylinder 42. The rubber cylinder 421 is equipped with a rotatable connecting plate 411 and a rotatable push rod 422 inside. An annular plate 41 is stably installed on one end of the gas supply pipe 2. The push rod 422 pushes the connecting plate 411, causing the connecting plate 411 to rotate, which can unfold the rubber cylinder 421 so that the outer surface of the rubber cylinder 421 is tightly attached to the inner wall of the connecting cylinder 51, which can achieve a sealing effect and avoid the problem of poor sealing effect due to loosening of the sealing gasket after long-term use, thus ensuring that the pneumatic tourniquet 3 can be used normally.

[0024] Reference Figures 1-7 In a preferred embodiment, the receiving mechanism 5 includes a connecting cylinder 51 and a limiting plate 52. One end of the connecting cylinder 51 is open, and the limiting plate 52 is fixedly installed inside the connecting cylinder 51 in an annular shape. A groove 6 is formed on the outer side of the limiting plate 52. The depth of the groove 6 is set to two-thirds of the thickness of the limiting plate 52, and the groove 6 is also set in an annular shape. A spring 7 is set inside the groove 6. One end of the spring 7 is stably connected to a buffer plate 8. The buffer plate 8 is set in an annular shape, and the center of the buffer plate 8 and the center of the limiting plate 52 are set on the same straight line. The inner diameter of the buffer plate 8 is the same as the inner diameter of the limiting plate 52, so that the sliding cylinder 42 can pass smoothly through the inside of the limiting plate 52.

[0025] Furthermore, the bottom end of the buffer plate 8 is located inside the groove 6 and is slidably connected to the inside of the groove 6. Several springs 7 are set at the bottom of the buffer plate 8 and are evenly arranged inside the groove 6 to compress and buffer the buffer plate 8. When the pressing block 13 squeezes the buffer plate 8, the pressure on the limiting plate 52 can be reduced under the buffer of the springs 7, thus avoiding damage to the limiting plate 52. The other end of the connecting cylinder 51 is fixedly installed with the air inlet pipe 9. The inside of the air inlet pipe 9 is connected to the inside of the connecting cylinder 51. An inflatable airbag 10 is set inside the pneumatic tourniquet 3. The air inlet connection end on the inflatable airbag 10 is fixedly connected to the air inlet pipe 9.

[0026] When this device is in use, one end of the sliding cylinder 42 is moved into the interior of the connecting cylinder 51. The rubber cylinder 421 enters the interior of the connecting cylinder 51 and passes through the interior of the limiting plate 52. When the rubber cylinder 421 is completely moved to the inside of the limiting plate 52, the pressing block 13 has already squeezed the buffer plate 8. The buffer plate 8 is squeezed and compresses the spring 7. Under the contraction of the spring 7, the squeezing force of the pressing block 13 on the limiting plate 52 can be reduced. And by squeezing the buffer plate 8 by the pressing block 13, the push rod 422 can be controlled to fully push the connecting plate 411. The connecting plate 411 unfolds the rubber cylinder 421 and seals the interior of the connecting cylinder 51 to prevent air leakage.

[0027] An annular ring 11 is fitted around the outside of the gas pipe 2, tightly wrapping one end of the gas pipe 2. An arc-shaped plate 12 is fixedly installed on the side of the annular ring 11. The annular ring 11 is provided on the gas pipe 2 for stable connection to the arc-shaped plate 12. The opening of the arc-shaped plate 12 faces upward, and the gas pipe 2 is clamped inside the concave part of the arc-shaped plate 12. A sliding cylinder 42 is fitted around the outside of the arc-shaped plate 12. Both the arc-shaped plate 12 and the annular ring 11 are located inside the sliding cylinder 42 and are slidably connected to the outside of the arc-shaped plate 12. An elastic positioning plate 43 is installed at the opening of the arc-shaped plate 12. The elastic positioning plate 43 is installed on the annular ring 11. On the side, the outer surface of the elastic positioning plate 43 is flush with the outer surface of the annular ring 11, but the thickness of the elastic positioning plate 43 is less than the thickness of the annular ring 11. In this way, the elastic positioning plate 43 can have a certain compression space. Initially, the limiting block 431 is located inside the sliding cylinder 42. At this time, the elastic positioning plate 43 is pressed downward. When the sliding cylinder 42 slides out from the position of the limiting block 431, the limiting block 431 will automatically move upward. At this time, the elastic positioning plate 43 will return to the horizontal state. The limiting block 431 can limit the sliding cylinder 42, preventing it from moving backward and ensuring the connection stability between the gas supply pipe 2 and the connecting cylinder 51.

[0028] This device has a pressing block 13 fitted onto the outer surface of the sliding cylinder 42. The pressing block 13 is also ring-shaped and wraps around the outside of the sliding cylinder 42. A sealing ring 14 is also glued to one side of the pressing block 13. The position of the sealing ring 14 corresponds to the position of the buffer plate 8. The pressing block 13 is slidably installed into the inside of the connecting cylinder 51. To improve the sealing performance, this device sets a sealing ring 14 on the rubber cylinder 421. When this device is in use, the sliding cylinder 42 will move. At the same time, the sliding cylinder 42 will move, which will drive the pressing block 13 to move. When the pressing block 13 moves into the inside of the connecting cylinder 51, it will squeeze the buffer plate 8, so that the sealing ring 14 can be in close contact with the buffer plate 8. In this way, a secondary sealing effect can be achieved, improving the performance of the device.

[0029] The device also has a connector 15 fixedly installed on the outside of the sliding cylinder 42. A round rod 16 is installed on one side of the connector 15. The round rod 16 is designed to be arc-shaped, and several round rods 16 are arranged around the connection point between the air supply pipe 2 and the connecting cylinder 51. No matter where the air leaks, it will blow onto the round rod 16. In addition, several connecting straps 17 are provided on the round rod 16 and are arranged around the outside of the sliding cylinder 42. When the round rod 16 is blown by the wind, the connecting straps 17 on the round rod 16 will be blown to facilitate the operation of the personnel. The operator can determine whether there is an air leak at the connection between the air supply pipe 2 and the connecting cylinder 51 by observing whether the connecting belt 17 is swaying. The connecting part 15 includes an annular bracket 151 and a connecting rod 152. The annular bracket 151 is provided with a support rod inside. The support rod is fixedly installed on the sliding cylinder 42 to fix the annular bracket 151. The connecting rod 152 is fixedly connected to the annular bracket 151 in a vertical manner. There are several connecting rods 152 arranged vertically, and a round rod 16 is fixedly installed between every two connecting rods 152. This design allows the round rod 16 to be positioned for easy use.

[0030] By providing Velcro straps on the outer surface of the pneumatic tourniquet 3, including a female Velcro strap 18 and a female Velcro strap 19, with the female Velcro strap 18 and female Velcro strap 19 respectively positioned on the two outer surfaces of the pneumatic tourniquet 3, and both centrally mounted on the pneumatic tourniquet 3, this device directly provides the female Velcro straps on the pneumatic tourniquet 3. This allows the pneumatic tourniquet 3 to be tightly wrapped around the affected area, avoiding excessively long wrapping lengths that could cause the inner loop to loosen and affect the hemostatic effect.

[0031] In this device, the thickness of the rubber cylinder 421 is set to 1mm, and one end of the rubber cylinder 421 is stably connected to the bottom of the annular plate 41. The diameter of the annular plate 41 is 5mm larger than the diameter of the air supply pipe 2. Setting the thickness of the rubber cylinder 421 to 1mm makes the rubber cylinder 421 softer, which is convenient to unfold the rubber cylinder 421 by rotating the connecting plate 411 during operation. The unfolded rubber cylinder 421 seals the inside of the connecting cylinder 51 to prevent air leakage. The diameter of the annular plate 41 is larger than the diameter of the air supply pipe 2, but the inner ring of the annular plate 41 corresponds to the inner ring of the air supply pipe 2. In this way, the solid position on the annular plate 41 will be located outside the air supply pipe 2, which makes it convenient to stably install one end of the rubber cylinder 421 on the annular plate 41 for use.

[0032] An air pressure display screen 20 and a time display screen 21 are installed on the electric pump 1, and a control button 22 is also provided on the electric pump 1 for setting the air pressure and time. A handle 23 is fixedly installed on the top of the electric pump 1. This device uses the electric pump 1 to inflate the air bladder 10 inside the pneumatic tourniquet 3, and the pressure value on the air pressure display screen 20 can be adjusted through the control button 22 to adjust the pressure value to a suitable number and set the hemostasis time. The hemostasis time generally does not exceed 20 minutes. When the hemostasis time reaches the set time, the internal system of the electric pump 1 will automatically control the degassing, and the pneumatic tourniquet 3 can be removed from the patient.

[0033] Specifically, a pneumatic tourniquet suitable for proximal limb surgery is designed to improve sealing and ensure the normal use of the pneumatic tourniquet 3. This is because the pneumatic tourniquet 3 is activated by a control device, and gas is delivered to the tourniquet 3 through a trachea, causing the internal air bladder 10 of the tourniquet 3 to expand. This allows for compression of the affected area to achieve hemostasis. However, due to long-term use, the sealing ring 14 at the connection between the trachea and the tourniquet 3 may loosen, leading to air leakage and affecting the seal and usability.

[0034] In practice, this device is often carried to operating rooms. It is connected to an external power source, and then, depending on the situation, a pneumatic tourniquet 3 is applied to the upper part of the affected area on the patient's limbs, legs, or arms. The pneumatic tourniquet 3 is wrapped around the upper part of the affected area. When wrapping, the gap between the pneumatic tourniquet 3 and the affected area should be minimized. This allows the wrapped area to be tightened when gas is being delivered, thus achieving a hemostatic effect.

[0035] Since the pneumatic tourniquet 3 has a male Velcro 18 and a female Velcro 19 installed on its two sides respectively, after wrapping, the male and female Velcro are fastened together to stably wrap the pneumatic tourniquet 3 in the wrapping position. Then, the air supply tube 2 is installed on the connecting tube 51 for use. The air supply tube 2 in this device has a connecting end at one end, and the two are set as one piece, which is used to quickly insert one end of the air supply tube 2 into the interior of the connecting tube 51. Since the tail end of the connecting tube 51 is tapered, as one end of the air supply tube 2 continues to extend into the interior of the connecting tube 51, the annular plate 41 will abut against the tapered surface, preventing the air supply tube 2 from moving further. In this state, the rubber cylinder 421 has passed through the position of the limiting plate 52, and at this time, the sliding cylinder 42 can be pushed. One end of the sliding cylinder 42 is always outside the connecting tube 51, which is convenient for medical staff to operate.

[0036] Moving the sliding cylinder 42 toward the connecting cylinder 51 will cause the push rod 422 to rotate. The push rod 422 can push the connecting plate 411 to rotate as well. By pushing and rotating several connecting plates 411 at the same time, the rubber cylinder 421 can be opened up by the connecting plates 411, so that it unfolds into a shape similar to a circular plate. The outer side of the unfolded rubber cylinder 421 will be in close contact with the inner wall of the connecting cylinder 51, which can achieve a sealing effect. In this state, the pressing block 13 on the sliding cylinder 42 will move into the interior of the connecting cylinder 51 and has already squeezed the buffer plate 8, reducing the squeezing force of the pressing block 13 on the limiting plate 52. At this time, the air supply pipe 2 is already connected to the connecting cylinder 51.

[0037] To stably connect the gas delivery tube 2 to the connecting cylinder 51, the sliding cylinder 42 will slide off the limiting block 431 when it slides. When the sliding cylinder 42 passes the limiting block 431, that is, when the limiting block 431 is exposed inside the sliding cylinder 42, the limiting block 431 can limit the sliding cylinder 42, preventing it from moving backward. At this time, the annular plate 41 is also abutting against the inner conical surface of the connecting cylinder 51, preventing the gas delivery tube 2 from moving forward or backward inside the connecting cylinder 51. This allows for a stable connection between the gas delivery tube 2 and the connecting cylinder 51. The electric pump 1 can then be started to deliver gas into the gas delivery tube 2, and the gas will be delivered to the inflatable airbag 10 through the air inlet pipe 9. The inflatable airbag 10 expands, allowing the pneumatic tourniquet 3 to compress the wrapped area, achieving a hemostatic effect.

[0038] Furthermore, by observing the pressure value displayed on the air pressure display screen 20 on the electric pump 1, the staff can control the squeezing force on the wrapped area. The control button 22 on the electric pump 1 can preset the pressure value to avoid excessive squeezing of the injured limb and causing secondary injury.

[0039] In order to quickly detect whether there is any air leakage at the connection between the gas supply pipe 2 and the connecting cylinder 51 when this device is in use, a connector 15 is installed on the outside of the sliding cylinder 42. A round rod 16 is also installed on the connector 15. A connecting strap 17 is tied to the round rod 16. The connecting strap 17 is made of cotton material, which is thin and light. It can be blown by the gas. By observing whether the connecting strap 17 is blowing, it can be determined whether there is any air leakage at the connection between the gas supply pipe 2 and the connecting cylinder 51.

[0040] When the device controls the sliding cylinder 42 to move to the side of the limit block 431, the round rod 16 installed outside the sliding cylinder 42 will be moved to the position where the air supply pipe 2 connects to the connecting cylinder 51. If there is an air leak, the connecting strip 17 on the round rod 16 will be blown. When the electric pump 1 is started, the air leak can be detected, and timely repairs can be carried out to avoid affecting the use.

Claims

1. A pneumatic tourniquet suitable for proximal limb surgery, characterized in that, It includes an electric pump (1), an air supply pipe (2) and a pneumatic tourniquet (3). The air supply pipe (2) is installed on the air outlet of the electric pump (1). A sealing mechanism (4) is installed at the end of the air supply pipe (2). The pneumatic tourniquet (3) is located at the end of the air supply pipe (2). The connecting sealing mechanism (4) includes: An annular plate (41) is installed at one end of the gas transmission pipe (2), and a connecting plate (411) is rotatably installed at the bottom of the annular plate (41). A sliding cylinder (42) is sleeved on the outside of the gas supply pipe (2). A rubber cylinder (421) is installed on the outside of the gas supply pipe (2), and the sliding cylinder (42) is connected to the annular plate (41) through the rubber cylinder (421). One end of the sliding cylinder (42) is rotatably connected to a push rod (422), and one end of the push rod (422) is rotatably connected to a connecting plate (411). Both the push rod (422) and the connecting plate (411) are located inside the rubber cylinder (421). An elastic positioning plate (43) is installed on the outside of the gas pipeline (2) and the elastic positioning plate (43) is positioned inside the sliding cylinder (42). A limiting block (431) is provided at one end of the elastic positioning plate (43). The receiving mechanism (5) is installed on the pneumatic tourniquet (3) and is used to connect the connecting sealing mechanism (4) to connect the gas supply tube (2) and the receiving mechanism (5) together.

2. A pneumatic tourniquet suitable for proximal limb surgery according to claim 1, characterized in that, The receiving mechanism (5) includes a connecting cylinder (51) and a limiting plate (52). One end of the connecting cylinder (51) is open, and the limiting plate (52) is fixedly installed inside the connecting cylinder (51) in an annular shape. A groove (6) is opened on the outer side of the limiting plate (52), and a spring (7) is set inside the groove (6). One end of the spring (7) is stably connected to the buffer plate (8).

3. A pneumatic tourniquet suitable for proximal limb surgery according to claim 2, characterized in that, The other end of the connecting tube (51) is fixedly installed with an air inlet pipe (9). The interior of the air inlet pipe (9) is connected to the interior of the connecting tube (51). An inflatable airbag (10) is installed inside the pneumatic tourniquet (3). The air inlet connection end on the inflatable airbag (10) is fixedly connected to the air inlet pipe (9).

4. A pneumatic tourniquet suitable for proximal limb surgery according to claim 3, characterized in that, An annular ring (11) is fitted around the outside of the gas pipe (2). An arc plate (12) is fixedly installed on the side of the annular ring (11) and the gas pipe (2) is snapped into the inside of the concave part of the arc plate (12). The sliding cylinder (42) is fitted around the outside of the arc plate (12) and is slidably connected to the outside of the arc plate (12). An elastic positioning plate (43) is installed at the opening of the arc plate (12).

5. A pneumatic tourniquet suitable for proximal limb surgery according to claim 4, characterized in that, The outer surface of the sliding cylinder (42) is fitted with a pressing block (13), and a sealing ring (14) is also attached to one side of the pressing block (13). The position of the sealing ring (14) corresponds to the position of the buffer plate (8), and the pressing block (13) is slidably installed into the interior of the connecting cylinder (51).

6. A pneumatic tourniquet suitable for proximal limb surgery according to claim 5, characterized in that, The external fixed installation of the sliding cylinder (42) is a connector (15), a round rod (16) is installed on one side of the connector (15), a connecting band (17) is provided on the round rod (16), and several connecting bands (17) are set and surround the outside of the sliding cylinder (42).

7. A pneumatic tourniquet suitable for proximal limb surgery according to claim 6, characterized in that, The connector (15) includes an annular bracket (151) and a connecting rod (152). The connecting rod (152) is fixedly connected to the annular bracket (151) in a vertical manner. Several connecting rods (152) are vertically arranged, and a round rod (16) is fixedly installed between every two connecting rods (152).

8. A pneumatic tourniquet suitable for proximal limb surgery according to claim 7, characterized in that, The outer surface of the pneumatic tourniquet (3) is provided with Velcro, which includes a sub Velcro (18) and a female Velcro (19). The sub Velcro (18) and the female Velcro (19) are respectively provided on the two outer surfaces of the pneumatic tourniquet (3).

9. A pneumatic tourniquet suitable for proximal limb surgery according to claim 8, characterized in that, The thickness of the rubber cylinder (421) is set to 1 mm, and one end of the rubber cylinder (421) is stably connected to the bottom of the annular plate (41). The diameter of the annular plate (41) is 5 mm larger than the diameter of the gas transmission pipe (2).

10. A pneumatic tourniquet suitable for proximal limb surgery according to claim 9, characterized in that, The electric pump (1) is equipped with a pressure display screen (20) and a time display screen (21), and is also equipped with a control button (22) for setting the pressure and time. A handle (23) is fixedly installed on the top of the electric pump (1).

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