Hemostasis device

Abstract

The invention relates to the technical field of hemostasis, and discloses a hemostasis device which comprises a tourniquet, a device bin is installed on the tourniquet, a winding shaft is installed in the device bin, two elastic belts are installed on the winding shaft, the ends of the two elastic belts are fixedly connected with the inner walls of the two ends of the tourniquet respectively, and a guide cylinder is fixedly installed on the winding shaft. According to the hemostasis device, the mechanical timing device is used for driving the rotating cylinder to wind the elastic rope, the first magnetic ring is attracted by the magnetic force of the second magnetic ring to drive one end of the elastic rope to move upwards in the rotary knob, and when the rotating shaft and the rotating cylinder are not reset completely, the elastic rope is pulled, so that the elastic rope is wound, and the hemostasis effect is achieved. When the elastic rope is stretched to a certain degree, the pulling force borne by the first magnetic ring is larger than the magnetic attraction force exerted on the first magnetic ring by the second magnetic ring, the first magnetic ring is downwards aligned with the magnetic shaft, the magnetic shaft retracts into the rotary knob, the rotary knob moves upwards to reset, the elastic belt is not rolled any more, and the relaxation time of the tourniquet is effectively adjusted according to the limb bleeding degree of a patient.

Description

Technical Field

[0001] The invention relates to the technical field of hemostasis, in particular to a hemostasis device. Background Art

[0002] Hemostatic devices refer to medical devices used to control bleeding and reduce blood loss during surgical operations or emergency treatment. These devices achieve hemostatic effects through different mechanisms. According to the usage scenarios and hemostatic methods, hemostatic devices can be divided into many types, and tourniquets are the most common type of hemostatic devices. Tourniquets can be made of a variety of materials, such as rubber, nylon, cloth, etc. When a tourniquet is tied to a limb, it will tightly wrap around the blood vessels of the limb, blocking blood flow and preventing blood from flowing out of the wound, thereby achieving the effect of hemostasis. Modern tourniquets are usually designed to be more user-friendly, including easy-to-operate quick release mechanisms, pressure indicators, and adjustable tightness. Some advanced tourniquets may also be equipped with hemostatic powder or other auxiliary hemostatic materials to enhance the hemostatic effect. After the tourniquet is tied, the time of using the tourniquet should be marked immediately next to the tourniquet or on a conspicuous part of the injured person's body. This is because long-term use of the tourniquet may lead to limb ischemia and necrosis, and the hemostatic effect and possible risks need to be weighed. It is generally recommended to relax the tourniquet at regular intervals when using it to reduce pressure on the limbs and closely observe the bleeding of the wound. However, the actual use of the tourniquet is usually in an emergency situation. The patient may not be able to know the exact usage time and mark and calculate it in time, resulting in an inability to accurately judge the usage time of the tourniquet. In an emergency, the patient may not be able to seek medical treatment in time, and may even forget to relax the tourniquet, resulting in secondary injuries such as limb ischemia and necrosis, endangering the patient's life. For this reason, we propose a hemostatic device. Summary of the invention

[0003] The object of the present invention is to provide a hemostatic device to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a hemostatic device, comprising a tourniquet, a device compartment is fixedly installed on the tourniquet, a reel is fixedly installed in the device compartment, two elastic bands are fixedly installed on the reel, the ends of the two elastic bands are respectively fixedly connected to the inner walls at both ends of the tourniquet, a guide cylinder is fixedly installed on the reel, a ratchet is slidably installed on the guide cylinder, a second spring is fixedly connected between the ratchet and the guide cylinder, and a ratchet pawl for limiting the ratchet is rotatably installed in the device compartment; A knob is fixedly mounted on the ratchet, and a plurality of telescopic rods are fixedly mounted on the knob, and a magnetic shaft is fixedly mounted on the end of each telescopic rod, and an annular groove for limiting the magnetic shaft is provided in the device bin, and a first magnetic ring that is magnetically attracted to the magnetic shaft is slidably mounted in the knob, a rotating part is rotatably mounted on the lower end of the knob, and a rotating drum is rotatably mounted on the rotating part, an elastic rope is wound on the outer wall of the rotating drum, one end of the elastic rope is fixedly mounted on the outer wall of the rotating drum, and the other end is fixedly connected to the lower end of the first magnetic ring, a fixing cylinder for limiting the rotating drum is fixedly mounted on the inner wall of the top of the device bin, and a mechanical timing device is fixedly mounted in the device bin, a rotating shaft is rotatably mounted on the mechanical timing device, and the rotating drum is vertically slidably mounted on the rotating shaft.

[0005] Preferably, a second magnetic ring magnetically attracted to the first magnetic ring is slidably installed in the knob, the second magnetic ring is located above the first magnetic ring, an elastic rod is fixedly connected between the second magnetic ring and the inner wall of the top of the knob, a wedge block for limiting the second magnetic ring is slidably installed in the knob, an elastic plate is slidably installed in the tourniquet, and a push plate that cooperates with the wedge block is rotatably installed on the upper end of the elastic plate.

[0006] Preferably, the magnetic attraction force between the second magnetic ring and the first magnetic ring is greater than the magnetic attraction force between the first magnetic ring and the magnetic axis, the magnetic attraction force between the second magnetic ring and the first magnetic ring is less than the elastic force of the elastic rod, and the magnetic attraction force between the first magnetic ring and the magnetic axis is greater than the elastic force of the telescopic rod.

[0007] Preferably, a third spring is fixedly connected between the pawl and the inner wall of the device bin, a rotating rod is rotatably mounted on the pawl, a telescopic block is fixedly mounted on the outer wall of the rotating rod, a connecting piece is rotatably mounted on the knob, and a sleeve for limiting the telescopic block is fixedly mounted on the connecting piece.

[0008] Preferably, a spiral groove cooperating with the telescopic block is provided on the inner wall of the sleeve, the top of the spiral groove is connected to a transverse groove, the end of the transverse groove is connected to a vertical groove, the end of the vertical groove is connected to the bottom of the spiral groove, and a guide block for allowing the telescopic block to enter the spiral groove is fixedly installed at the connection between the vertical groove and the spiral groove.

[0009] Preferably, a telescopic shaft is fixedly mounted on the outer wall of the rotating cylinder, a threaded groove for limiting the telescopic shaft is provided on the inner wall of the fixed cylinder, and the inner wall of the lower end of the fixed cylinder is configured to be wedge-shaped for facilitating the retraction of the telescopic shaft.

[0010] Preferably, a plurality of clips are fixedly mounted on one end of the tourniquet, each of which has sockets fixedly mounted on both ends, a telescopic member is fixedly mounted on the other end of the tourniquet, two push rods are slidably mounted inside the telescopic member, and an elastic card matching the socket is fixedly mounted on the end of each push rod.

[0011] Preferably, a knob is rotatably mounted on the telescopic member, and two connecting rods are hinged at the lower end of the knob. The two connecting rod ends are respectively hinged to the two push rod ends, and a first spring is fixedly connected between the two push rods and the inner wall of the telescopic member.

[0012] Preferably, a sub-velcro is fixedly mounted on one end of the tourniquet, and a main Velcro matching with the sub-velcro is fixedly mounted on the other end.

[0013] Preferably, a flexible cushion layer is fixedly installed on one side of the tourniquet, and the flexible cushion layer is made of a breathable and skin-friendly material.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention utilizes a mechanical timing device to drive the rotating shaft to slowly rotate in the opposite direction to reset, and drives the rotating drum to reel in the elastic rope. Since the first magnetic ring is attracted by the magnetic force of the second magnetic ring to slide upward in the knob, one end of the elastic rope moves upward in the knob. Before the rotating shaft and the rotating drum are completely reset, the elastic rope will be pulled and the elastic rope will be stretched. When the elastic rope is stretched to a certain extent, the pulling force on the first magnetic ring will be greater than the magnetic attraction of the second magnetic ring on it. When the second magnetic ring is closer to the first magnetic ring, the magnetic attraction generated therebetween is greater, and the rotating shaft and the rotating drum will rotate longer to generate sufficient pulling force to pull the first magnetic ring. The first magnetic ring is aligned downward with the magnetic axis, so that the magnetic axis retracts into the knob, and the knob is pushed upward by the elastic force of the second spring to reset, the pawl no longer limits the ratchet wheel, the elastic belt is no longer rolled up, and no pressure is provided on the patient's limbs, thereby effectively adjusting the tourniquet relaxation time according to the degree of bleeding in the patient's limbs.

[0015] The present invention utilizes the annular groove to limit the magnetic axis, so that the knob is limited after being pressed downward, and the pawl limits the ratchet, so that the knob drives the reel to reel in the elastic band without resetting, so that the elastic band is stretched and continuously exerts pressure on the patient's limbs to achieve a good hemostatic effect, and at the same time, the tourniquet is quickly fixed by the sub-Velcro and the main Velcro, and the elastic card is limited by the clamping piece, so that the binding of the tourniquet is further reinforced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the card and the jack of the present invention; Figure 3 This is a schematic diagram of the internal structure of the telescopic member of the present invention; Figure 4 It is a schematic diagram of the structure of the elastic band of the present invention; Figure 5 It is a schematic diagram of the ratchet and pawl structure of the present invention; Figure 6It is a schematic diagram of the sleeve structure of the present invention; Figure 7 It is a schematic diagram of the structure of the first magnetic ring and the second magnetic ring of the present invention; Figure 8 This is a schematic diagram of the wedge block structure of the present invention; Fig. 9 This is a schematic diagram of the elastic rope structure of the present invention; Fig.10 It is a schematic diagram of the structure of the rotating drum and the rotating shaft of the present invention.

[0017] In the figure: 1-tourniquet; 2-middle Velcro; 3-mother Velcro; 4-flexible cushion; 5-card; 6-jack; 7-telescopic member; 8-knob; 9-connecting rod; 10-push rod; 11-first spring; 12-elastic card; 13-elastic belt; 14-device compartment; 15-knob; 16-reeling shaft; 17-ratchet; 18-second spring; 19-pawl; 20-third spring; 21-rotating rod; 22-sleeve; 23-connecting member; 24-telescopic member Block; 25-spiral groove; 26-transverse groove; 27-vertical groove; 28-guide block; 29-elastic plate; 30-guide cylinder; 31-telescopic rod; 32-magnetic axis; 33-annular groove; 34-first magnetic ring; 35-second magnetic ring; 36-elastic rod; 37-push plate; 38-wedge block; 39-rotating member; 40-rotating cylinder; 41-elastic rope; 42-telescopic axis; 43-fixed cylinder; 44-threaded groove; 45-rotating shaft; 46-mechanical timing device. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-10The present invention provides a technical solution: a hemostatic device, comprising a tourniquet 1, a flexible cushion layer 4 is fixedly installed on one side of the tourniquet 1, and the flexible cushion layer 4 is made of breathable and skin-friendly material. A sub-Velcro 2 is fixedly installed on one end of the tourniquet 1, and a mother Velcro 3 matched with the sub-Velcro 2 is fixedly installed on the other end. The cooperation between the sub-Velcro 2 and the mother Velcro 3 can make the two ends of the tourniquet 1 quickly fixed, and the size of the tourniquet 1 can be changed according to the thickness of the patient's limbs. The mother Velcro 3 can also be pasted with a colored information card for recording the patient's blood type and other information, so that the patient can be rescued in time in a major accident. A plurality of card components 5 are fixedly installed on one end of the tourniquet 1, and each card component 5 is fixedly installed with a socket 6 at both ends. A telescopic component 7 is fixedly installed on the other end of the tourniquet 1, and two push rods 10 are slidably installed in the telescopic component 7. An elastic card 12 matched with the socket 6 is fixedly installed on the end of each push rod 10, and a rotating The knob 8 is hinged with two connecting rods 9 at the lower end, and the ends of the two connecting rods 9 are respectively hinged with the ends of the two push rods 10. The two push rods 10 are fixedly connected with the inner wall of the telescopic member 7 by a first spring 11. After the tourniquet 1 is fixed to the patient's limb, the knob 8 is rotated to drive one end of the two connecting rods 9 to perform a circular motion. Through the limit of the push rods 10 by the telescopic member 7, the two connecting rods 9 will synchronously pull the push rods 10 to move into the telescopic member 7, and compress the first spring 11, so that the two push rods 10 are moved. After the elastic card 12 at the end of 10 is aligned with the two insertion holes 6 on the corresponding card member 5, the knob 8 is released, and the elastic force of the first spring 11 will push the push rod 10 to move to the outside of the telescopic member 7 to reset, and drive the connecting rod 9 and the knob 8 to reset, and at the same time push the two elastic cards 12 to deform and then snap into the insertion hole 6, so as to further reinforce the binding of the tourniquet 1. When the tourniquet 1 needs to be removed, the knob 8 can be rotated again to deform the elastic card 12 and pull it out of the insertion hole 6, breaking away from the limit of the card member 5.

[0020] A device bin 14 is fixedly installed on the tourniquet 1, a reel 16 is fixedly installed in the device bin 14, two elastic bands 13 are fixedly installed on the reel 16, the ends of the two elastic bands 13 are respectively fixedly connected to the inner walls at both ends of the tourniquet 1, a guide cylinder 30 is fixedly installed on the reel 16, a ratchet 17 is slidably installed on the guide cylinder 30, a second spring 18 is fixedly connected between the ratchet 17 and the guide cylinder 30, a ratchet 19 for limiting the ratchet 17 is rotatably installed in the device bin 14, a knob 15 is fixedly installed on the ratchet 17, a third spring 20 is fixedly connected between the ratchet 19 and the inner wall of the device bin 14, and the ratchet A rotating rod 21 is rotatably mounted on the knob 19, a telescopic block 24 is fixedly mounted on the outer wall of the rotating rod 21, a connecting piece 23 is rotatably mounted on the knob 15, a sleeve 22 for limiting the telescopic block 24 is fixedly mounted on the connecting piece 23, a spiral groove 25 matching the telescopic block 24 is arranged on the inner wall of the sleeve 22, a transverse groove 26 is connected to the top of the spiral groove 25, a vertical groove 27 is connected to the end of the transverse groove 26, the end of the vertical groove 27 is connected to the bottom of the spiral groove 25, and a guide block 28 for making the telescopic block 24 enter the spiral groove 25 is fixedly mounted at the connection between the vertical groove 27 and the spiral groove 25. After the tourniquet 1 is fixed, it is lowered. Pressing the knob 15 drives the connecting piece 23 and the sleeve 22 to move downward. The telescopic block 24 on the rotating rod 21 is limited by the guide block 28 and moves along the spiral groove 25, and drives the pawl 19 to rotate, so that the third spring 20 is compressed. The pawl 19 will not affect the downward movement of the ratchet 17. After the ratchet 17 drops to the position matched with the pawl 19, the telescopic block 24 will move to the top of the spiral groove 25. At this time, the elastic force of the third spring 20 will push the telescopic block 24 to rotate along the transverse groove 26, and the pawl 19 returns to the state of matching with the ratchet 17. At this time, turning the knob 15 can drive the ratchet 17 and the winding shaft 16 to rotate. The reel 16 will reel up the elastic band 13, which will be continuously stretched and the pressure on the patient's limb will be continuously increased. After the patient rotates the knob 15 to a suitable angle according to the bleeding state of the limb, the limit of the ratchet 19 on the ratchet 17 will prevent the elastic force of the elastic band 13 from driving the reel 16 and the knob 15 to reset. When the knob 15 rises, the sleeve 22 will be driven to rise synchronously, and the telescopic block 24 will move along the vertical groove 27. The telescopic block 24 will be compressed when passing the inclined surface of the guide block 28, and will pop out again after passing the guide block 28, and will be limited by the straight surface of the guide block 28 again to enter the spiral groove 25.

[0021] A plurality of telescopic rods 31 are fixedly mounted on the knob 15, and a magnetic shaft 32 is fixedly mounted at the end of each telescopic rod 31. An annular groove 33 for limiting the magnetic shaft 32 is provided in the device compartment 14. A first magnetic ring 34 magnetically attracted to the magnetic shaft 32 is slidably mounted in the knob 15. The magnetic attraction between the first magnetic ring 34 and the magnetic shaft 32 is greater than the elastic force of the telescopic rod 31. A second magnetic ring 35 magnetically attracted to the first magnetic ring 34 is slidably mounted in the knob 15. The second magnetic ring 35 is located above the first magnetic ring 34. The second magnetic ring 35 is located above the first magnetic ring 34. 5 and the first magnetic ring 34 is greater than the magnetic attraction between the first magnetic ring 34 and the magnetic shaft 32, an elastic rod 36 is fixedly connected between the second magnetic ring 35 and the inner wall of the top of the knob 15, and the magnetic attraction between the second magnetic ring 35 and the first magnetic ring 34 is less than the elastic force of the elastic rod 36, a wedge block 38 for limiting the second magnetic ring 35 is slidably installed in the knob 15, an elastic plate 29 is slidably installed in the tourniquet 1, and a push plate 37 that matches the wedge block 38 is rotatably installed on the upper end of the elastic plate 29, and the knob 15 is pressed downward After that, the magnetic shaft 32 will be aligned with the annular groove 33. At this time, the magnetic shaft 32 will be attracted by the magnetic force of the first magnetic ring 34 and will not enter the annular groove 33. After turning the knob 15, the tourniquet 1 will be continuously tightened, the pressure on the elastic plate 29 will continue to increase, and the push plate 37 will be pushed to continuously move upward in the knob 15. The push plate 37 will cooperate with the inclined surface on one side of the wedge block 38 to push the wedge block 38 to move. The other side of the wedge block 38 will cooperate with the second magnetic ring 35 to push the second magnetic ring 35 to overcome the elastic force of the elastic rod 36 and move downward. The tighter the blood belt 1 is tied, the elastic plate 29 will push the push plate 37 to move upward a longer distance, and the second magnetic ring 35 will move downward a farther distance. After the second magnetic ring 35 moves downward, the distance between it and the first magnetic ring 34 is shortened, and the magnetic attraction between them will continue to increase. Since the magnetic attraction between the second magnetic ring 35 and the first magnetic ring 34 is greater than the magnetic attraction between the first magnetic ring 34 and the magnetic axis 32, the first magnetic ring 34 will move upward, and the magnetic axis 32 will be pushed into the annular groove 33 by the elastic force of the telescopic rod 31, preventing the knob 15 from rising and resetting.

[0022] A rotating member 39 is rotatably mounted on the lower end of the knob 15, and a rotating drum 40 is rotatably mounted on the rotating member 39. An elastic rope 41 is wound around the outer wall of the rotating drum 40. One end of the elastic rope 41 is fixedly mounted on the outer wall of the rotating drum 40, and the other end is fixedly connected to the lower end of the first magnetic ring 34. A fixed cylinder 43 for limiting the rotating drum 40 is fixedly mounted on the inner wall of the top of the device chamber 14. A telescopic shaft 42 is fixedly mounted on the outer wall of the rotating drum 40. A threaded groove 44 for limiting the telescopic shaft 42 is arranged on the inner wall of the fixed cylinder 43. The inner wall of the lower end of the fixed cylinder 43 is arranged in a wedge shape for facilitating the retraction of the telescopic shaft 42. A mechanical timing device 46 is fixedly mounted in the device chamber 14 (the mechanical timing device 46 is an existing known structure, so the present invention will not be described in detail). 6 is rotatably mounted with a rotating shaft 45, and the rotating drum 40 is vertically slidably mounted on the rotating shaft 45. When the knob 15 moves downward, the rotating member 39 and the rotating drum 40 will be driven to move downward synchronously. The threaded groove 44 limits the telescopic shaft 42, which will make the rotating drum 40 drive the rotating shaft 45 to rotate synchronously. At the same time, the elastic rope 41 wound on the rotating drum 40 will be released, which will not affect the upward movement of the first magnetic ring 34 in the knob 15. After the knob 15 moves downward and rotates, the rotating drum 40 will be separated from the limit of the fixed cylinder 43. At this time, the mechanical timing device 46 will drive the rotating shaft 45 to slowly rotate in the reverse direction to reset, and drive the rotating drum 40 to rotate in the reverse direction synchronously. The rotating drum 40 will reel in the elastic rope 41. Since the first magnetic ring 34 is attracted by the magnetic force of the second magnetic ring 35 The knob 15 slides upward, causing one end of the elastic rope 41 to move upward in the knob 15. When the shaft 45 and the drum 40 have not yet been reset, the elastic rope 41 will be pulled and stretched. When the elastic rope 41 is stretched to a certain extent, the pulling force on the first magnetic ring 34 will be greater than the magnetic attraction of the second magnetic ring 35 on it. When the second magnetic ring 35 is closer to the first magnetic ring 34, the magnetic attraction generated between them will be greater. The shaft 45 and the drum 40 will rotate for a longer time to generate enough pulling force to pull the first magnetic ring 34. After the first magnetic ring 34 is pulled downward, it will be aligned with the magnetic axis 32 and the magnetic axis 32 will retract into the knob 15. The knob 15 is pushed upward by the elastic force of the second spring 18 to reset. The pawl 19 no longer limits the ratchet 17. The elastic force of the elastic belt 13 will drive the winding shaft 16 and the knob 15 to rotate in the opposite direction to reset. The pressure on the elastic plate 29 will continue to decrease, and the push plate 37 will no longer limit the wedge block 38. The elastic force of the elastic rod 36 will drive the second magnetic ring 35 and the wedge block 38 to reset. The knob 15 will also drive the rotating drum 40 to move upward. At this time, the rotating drum 40 has not yet been reset. The telescopic shaft 42 does not correspond to the thread groove 44. The telescopic shaft 42 will retract when it contacts the inclined surface at the lower end of the fixed cylinder 43. In the process of the rotating drum 40 being driven to rise by the knob 15, it is limited by the inner wall of the fixed cylinder 43 and cannot be ejected in time. After the rotating drum 40 is raised, as the rotating shaft 45 drives the rotating drum 40 to reset, the telescopic shaft 42 will be aligned with the first section of the thread groove 44 again, and will pop out into the thread groove 44.At this time, the elastic band 13 is no longer rolled up and will no longer provide pressure on the patient's limbs, effectively adjusting the relaxation time of the tourniquet 1 according to the degree of bleeding in the patient's limbs.

[0023] Specifically, firstly, the tourniquet 1 is quickly fixed according to the different thicknesses of the patient's limbs through the cooperation of the sub-velcro 2 and the main Velcro 3, and then the rotating knob 8 drives one end of the two connecting rods 9 to perform a circular motion. Through the limitation of the push rod 10 by the telescopic member 7, the two connecting rods 9 will synchronously pull the push rod 10 to move inside the telescopic member 7, and compress the first spring 11. After the elastic clips 12 at the ends of the two push rods 10 are aligned with the two sockets 6 on the corresponding clips 5, the rotating knob 8 is released. The elastic force of the first spring 11 will push the push rod 10 to move to the outside of the telescopic member 7 to reset, and drive the connecting rod 9 and the rotating knob 8 to reset, and at the same time push the two elastic clips 12 to deform and then get stuck in the socket 6, so as to further reinforce the binding of the tourniquet 1. After the tourniquet 1 is fixed, it is moved downward. Pressing the knob 15 drives the connecting piece 23 and the sleeve 22 to move downward, and the telescopic block 24 on the rotating rod 21 is limited by the guide block 28 and will move along the spiral groove 25, and drive the pawl 19 to rotate, so that the third spring 20 is compressed, and the pawl 19 will not affect the downward movement of the ratchet 17. After the ratchet 17 drops to the position matched with the pawl 19, the telescopic block 24 will move to the top of the spiral groove 25. At this time, the elastic force of the third spring 20 will push the telescopic block 24 to rotate along the transverse groove 26, and the pawl 19 returns to the state of matching with the ratchet 17. At this time, turning the knob 15 can drive the ratchet 17 and the winding shaft 16 to rotate, and the winding shaft 16 will reel the elastic belt 13. The elastic belt 13 will be continuously stretched and the support for the patient's limb will be continuously increased. The patient turns the knob 15 to a suitable angle according to the bleeding state of the limb, and the limit of the ratchet 19 on the ratchet 17 will prevent the elastic force of the elastic band 13 from driving the reel 16 and the knob 15 to reset. After the knob 15 is pressed downward, the magnetic shaft 32 will be aligned with the annular groove 33. At this time, the magnetic shaft 32 will not enter the annular groove 33 due to the magnetic attraction of the first magnetic ring 34. After the knob 15 is turned, the tourniquet 1 will be continuously tightened, and the pressure on the elastic plate 29 will continue to increase, and the push plate 37 will be pushed to continuously move upward in the knob 15. The push plate 37 will cooperate with the inclined surface on one side of the wedge block 38 to push the wedge block 38 to move. The other side of the wedge block 38 will cooperate with the second magnetic ring 35 to push the second magnetic ring 35 to overcome the elastic force of the elastic rod 36 and move downward. , and when the tourniquet 1 is tied tighter, the elastic plate 29 will push the push plate 37 to move upward a longer distance, and the second magnetic ring 35 will move downward a longer distance. After the second magnetic ring 35 moves downward, the distance between it and the first magnetic ring 34 is shortened, and the magnetic attraction between them will continue to increase. Since the magnetic attraction between the second magnetic ring 35 and the first magnetic ring 34 is greater than the magnetic attraction between the first magnetic ring 34 and the magnetic shaft 32, the first magnetic ring 34 will move upward, and the magnetic shaft 32 will be pushed into the annular groove 33 by the elastic force of the telescopic rod 31 to prevent the knob 15 from rising and resetting. During the downward movement of the knob 15, the rotating member 39 and the rotating drum 40 will be driven to move downward synchronously. The threaded groove 44 limits the telescopic shaft 42, which will cause the rotating drum 40 to drive the rotating shaft 45 to rotate synchronously.At the same time, the elastic rope 41 wound on the rotating drum 40 will be released, which will not affect the upward movement of the first magnetic ring 34 in the knob 15. After the knob 15 moves downward and rotates completely, the rotating drum 40 will break away from the limit of the fixed cylinder 43. At this time, the mechanical timing device 46 will drive the rotating shaft 45 to slowly rotate in the reverse direction to reset, and drive the rotating drum 40 to rotate in the reverse direction synchronously. The rotating drum 40 will rewind the elastic rope 41. Since the first magnetic ring 34 is attracted by the magnetic force of the second magnetic ring 35 and slides upward in the knob 15, one end of the elastic rope 41 is rotated in the knob 15. 5 moves upward, and when the rotating shaft 45 and the rotating drum 40 have not yet been reset, the elastic rope 41 will be pulled and the elastic rope 41 will be stretched. When the elastic rope 41 is stretched to a certain extent, the pulling force on the first magnetic ring 34 will be greater than the magnetic attraction of the second magnetic ring 35 on it. When the second magnetic ring 35 is closer to the first magnetic ring 34, the magnetic attraction generated between them will be greater. The rotating shaft 45 and the rotating drum 40 will rotate for a longer time to generate enough pulling force to pull the first magnetic ring 34. After the first magnetic ring 34 is pulled downward, it will be aligned with the magnetic axis 32, and the magnetic axis 33 will be aligned with the magnetic axis 34. 2 retracts into the knob 15, and the knob 15 is pushed upward by the elastic force of the second spring 18 to reset. The pawl 19 no longer limits the ratchet 17, and the elastic force of the elastic band 13 drives the reel 16 and the knob 15 to rotate in the opposite direction to reset. The pressure on the elastic plate 29 will continue to decrease, and the push plate 37 will no longer limit the wedge block 38. The elastic force of the elastic rod 36 will drive the second magnetic ring 35 and the wedge block 38 to reset, and the knob 15 will also drive the drum 40 to move upward. At this time, the drum 40 has not yet reset, and the telescopic shaft 42 is not aligned with the thread groove Correspondingly, when the telescopic shaft 42 contacts the inclined surface at the lower end of the fixed cylinder 43, it will retract, and when the knob 15 drives the rotating cylinder 40 to rise, it is limited by the inner wall of the fixed cylinder 43 and cannot be ejected in time. After the rotating cylinder 40 is completely raised, as the rotating shaft 45 drives the rotating cylinder 40 to reset, the telescopic shaft 42 will be re-aligned with the first section of the thread groove 44 and will pop out into the thread groove 44. At this time, the elastic band 13 is no longer rolled up and will no longer provide pressure on the patient's limbs, effectively adjusting the relaxation time of the tourniquet 1 according to the degree of bleeding in the patient's limbs.

[0024] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hemostatic device, comprising a tourniquet (1), characterized in that: The tourniquet (1) is fixedly mounted with a device compartment (14), a reel (16) is fixedly mounted inside the device compartment (14), two elastic bands (13) are fixedly mounted on the reel (16), the ends of the two elastic bands (13) are respectively fixedly connected to the inner walls at both ends of the tourniquet (1), a guide cylinder (30) is fixedly mounted on the reel (16), a ratchet (17) is slidably mounted on the guide cylinder (30), a second spring (18) is fixedly connected between the ratchet (17) and the guide cylinder (30), and a ratchet pawl (19) for limiting the position of the ratchet (17) is rotatably mounted inside the device compartment (14); The ratchet wheel (17) is fixedly mounted with a knob (15), and a plurality of telescopic rods (31) are fixedly mounted on the knob (15), and a magnetic shaft (32) is fixedly mounted on the end of each telescopic rod (31). An annular groove (33) for limiting the magnetic shaft (32) is provided in the device bin (14), and a first magnetic ring (34) magnetically attracted to the magnetic shaft (32) is slidably mounted in the knob (15), and a rotating member (39) is rotatably mounted on the lower end of the knob (15), and a rotating drum (44) is rotatably mounted on the rotating member (39). 0), an elastic rope (41) is wound around the outer wall of the rotating drum (40), one end of the elastic rope (41) is fixedly mounted on the outer wall of the rotating drum (40), and the other end is fixedly connected to the lower end of the first magnetic ring (34), a fixed cylinder (43) for limiting the position of the rotating drum (40) is fixedly mounted on the inner wall of the top of the device bin (14), a mechanical timing device (46) is fixedly mounted in the device bin (14), a rotating shaft (45) is rotatably mounted on the mechanical timing device (46), and the rotating drum (40) is vertically slidably mounted on the rotating shaft (45).

2. A hemostatic device according to claim 1, characterized in that: A second magnetic ring (35) magnetically attracted to the first magnetic ring (34) is slidably mounted in the knob (15); the second magnetic ring (35) is located above the first magnetic ring (34); an elastic rod (36) is fixedly connected between the second magnetic ring (35) and the inner wall of the top of the knob (15); a wedge block (38) for limiting the second magnetic ring (35) is slidably mounted in the knob (15); an elastic plate (29) is slidably mounted in the tourniquet (1); a push plate (37) cooperating with the wedge block (38) is rotatably mounted on the upper end of the elastic plate (29).

3. A hemostatic device according to claim 2, characterized in that: The magnetic attraction force between the second magnetic ring (35) and the first magnetic ring (34) is greater than the magnetic attraction force between the first magnetic ring (34) and the magnetic axis (32), the magnetic attraction force between the second magnetic ring (35) and the first magnetic ring (34) is less than the elastic force of the elastic rod (36), and the magnetic attraction force between the first magnetic ring (34) and the magnetic axis (32) is greater than the elastic force of the telescopic rod (31).

4. A hemostatic device according to claim 1, characterized in that: A third spring (20) is fixedly connected between the ratchet (19) and the inner wall of the device bin (14); a rotating rod (21) is rotatably mounted on the ratchet (19); a telescopic block (24) is fixedly mounted on the outer wall of the rotating rod (21); a connecting piece (23) is rotatably mounted on the knob (15); and a sleeve (22) for limiting the telescopic block (24) is fixedly mounted on the connecting piece (23).

5. A hemostatic device according to claim 4, characterized in that: The inner wall of the sleeve (22) is provided with a spiral groove (25) matched with the telescopic block (24); the top of the spiral groove (25) is connected with a transverse groove (26); the end of the transverse groove (26) is connected with a vertical groove (27); the end of the vertical groove (27) is connected with the bottom of the spiral groove (25); and a guide block (28) for allowing the telescopic block (24) to enter the spiral groove (25) is fixedly installed at the connection point between the vertical groove (27) and the spiral groove (25).

6. A hemostatic device according to claim 1, characterized in that: A telescopic shaft (42) is fixedly mounted on the outer wall of the rotating cylinder (40), a threaded groove (44) for limiting the telescopic shaft (42) is provided on the inner wall of the fixed cylinder (43), and the inner wall of the lower end of the fixed cylinder (43) is configured to be wedge-shaped to facilitate the retraction of the telescopic shaft (42).

7. A hemostatic device according to claim 1, characterized in that: A plurality of clamping members (5) are fixedly mounted on one end of the tourniquet (1), and each of the clamping members (5) has a socket (6) fixedly mounted on both ends. A telescopic member (7) is fixedly mounted on the other end of the tourniquet (1), and two push rods (10) are slidably mounted in the telescopic member (7), and an elastic clamp (12) matching the socket (6) is fixedly mounted on the end of each push rod (10).

8. A hemostatic device according to claim 7, characterized in that: A knob (8) is rotatably mounted on the telescopic member (7), and two connecting rods (9) are hingedly connected to the lower end of the knob (8). The ends of the two connecting rods (9) are respectively hingedly connected to the ends of two push rods (10), and a first spring (11) is fixedly connected between the two push rods (10) and the inner wall of the telescopic member (7).

9. A hemostatic device according to claim 7, characterized in that: A sub-velcro (2) is fixedly mounted on one end of the tourniquet (1), and a main-velcro (3) matching with the sub-velcro (2) is fixedly mounted on the other end.

10. A hemostatic device according to claim 9, characterized in that: A flexible cushion layer (4) is fixedly mounted on one side of the tourniquet (1); the flexible cushion layer (4) is made of a breathable and skin-friendly material.

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