Puncture point wound hemostatic compression bandage

Abstract

This invention relates to the field of medical device technology, specifically to a pressure band for hemostasis at puncture points. It includes a tourniquet body, a mounting plate and a protective cover mounted on the tourniquet body, a pressure balloon mounted on the tourniquet body, and a spring-loaded spring mounted on the mounting plate. The power assembly is also mounted on the mounting plate. Unlike existing technologies, this pressure band for puncture points allows for inflation or deflation of the pressure balloon via a drive mechanism, eliminating the need for manual operation. Furthermore, the escapement mechanism ensures a slow and stable power output from the spring, allowing for longer operation. The gas circulation system enables the pressure balloon to automatically inflate or deflate within a fixed time, preventing injury to the patient if the tourniquet is forgotten to be released.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a pressure bandage for hemostasis at puncture sites. Background Technology

[0002] A pneumatic tourniquet is a device that uses air to apply pressure to control bleeding. Its basic principle is to inflate the tourniquet with gas, causing it to compress the blood vessels at the injured site, thereby stopping or reducing bleeding. This technique aims to provide controllable pressure to prevent further damage and blood loss. When using a tourniquet, it is crucial to pay attention to the application time. The tourniquet should not be applied for more than 30 minutes, and should be loosened for approximately 10 minutes every 30 minutes before reapplying. Prolonged use of a tourniquet without loosening it can lead to local ischemia, potentially causing necrosis in the blood-supplying area and resulting in serious adverse consequences. Therefore, doctors need to loosen the tourniquet regularly. However, doctors may be too busy and forget to loosen the tourniquet, which could affect the patient's health. Therefore, we propose a tourniquet for puncture point wounds.

[0003] Invention Content

[0004] One of the technical problems this application aims to solve is that the tourniquet will automatically loosen and compress the patient's puncture site to stop bleeding within a planned time without the need for staff to loosen or tighten it.

[0005] To address the aforementioned technical problems, this application provides a hemostatic pressure band for puncture site wounds, comprising a tourniquet body, a mounting plate and a protective cover disposed on the tourniquet body, a pressure airbag disposed on the tourniquet body, which compresses the puncture site to stop bleeding; a spring-loaded spring disposed on the mounting plate; a power assembly disposed on the mounting plate, which drives the spring-loaded spring to inflate and deflate the pressure airbag; and a gas circulation unit disposed on the mounting plate, which controls the inflation and deflation of the pressure airbag.

[0006] In some embodiments, the power assembly includes a drive member disposed on a mounting plate, which provides power for inflating and deflating the airbag. The drive member is provided with a locking member to fix the spring. The drive member is provided with an escapement mechanism to control the spring to release power slowly and smoothly.

[0007] In some embodiments, the driving component includes a mainspring shaft rotatably mounted on a mounting plate, the mainspring shaft having a hexagonal groove, a mainspring barrel rotatably mounted on the mainspring shaft, the mainspring shaft being connected to the inner end of a mainspring spring, the mainspring barrel being connected to the outer end of a mainspring spring, a drive gear being mounted on the mainspring barrel, a drive shaft being mounted on the mounting plate, a drive gear cooperating with the drive gear being mounted on the drive shaft, the drive gear being larger than the drive gear, a drive circular plate being mounted on the drive circular plate, a circular rod being mounted on the circular rod, and a connecting rod being rotatably mounted on the circular rod.

[0008] In some embodiments, the locking member includes a locking bar disposed on a mounting plate, an extension plate disposed on the locking bar, a ratchet disposed on the spring shaft, a central shaft disposed on the extension plate, a ratchet tooth rotatably disposed on the central shaft for cooperating with the ratchet tooth, a positioning block disposed on the extension plate, a push spring disposed on the positioning block, and the push spring being connected to the ratchet tooth.

[0009] In some embodiments, the escapement mechanism includes a first column mounted on a mounting plate, an escape wheel rotatably mounted on the first column, a second column mounted on the mounting plate, a rotating shaft mounted on the second column, an extension plate mounted on the second column, a hairspring mounted on the rotating shaft, the outer end of the hairspring being connected to the extension plate, a balance wheel mounted on the rotating shaft, a connecting plate mounted on the second column, and an escape fork for cooperating with the escape wheel mounted on the connecting plate.

[0010] In some embodiments, the gas circulation unit includes an air chamber disposed on a mounting plate, through which the gas flow in the pressurized airbag is controlled. A gas recovery component is disposed on the air chamber, through which the pressurized airbag in the inflated state is deflated. A gas replenishment component is disposed on the air chamber, through which the pressurized airbag in the deflated state is inflated.

[0011] In some embodiments, the air chamber includes an air storage compartment mounted on a mounting plate, a guide rail on the air storage compartment, a sliding plate slidably mounted on the guide rail, a second round rod on the sliding plate, the second round rod being rotatably connected to a connecting rod, racks on both sides of the sliding plate, a sliding groove on the mounting plate, the sliding groove being connected to the inflation port of the pressurized airbag, a sealing plate slidably mounted on the sliding groove, an air outlet and an air inlet on the sealing plate, a compression plate slidably mounted inside the air storage compartment, one side of the compression plate being connected to the sealing plate, and a drive screw rotatably mounted inside the air storage compartment, the drive screw being threadedly connected to the compression plate.

[0012] In some embodiments, the gas recovery component includes a rotating rod rotatably mounted on a mounting plate located on one side of a guide rail. A recovery gear, which engages with a rack, is mounted on the rotating rod. The recovery gear is connected to the rotating rod via a one-way bearing. A connecting gear is mounted on the rotating rod. A support plate is mounted on the mounting plate. A connecting shaft is rotatably mounted on the support plate. A connecting gear 2, which engages with the connecting gear 1, is mounted on the connecting shaft. A connecting pulley 1 is located at the end of the connecting shaft furthest from the connecting gear 2. A connecting pulley 2 is located on the outside of the gas storage chamber of the drive screw. The connecting pulley 2 is connected to the drive screw via a one-way bearing. A connecting belt is mounted on both the connecting pulley 1 and the connecting pulley 2.

[0013] In some embodiments, the gas replenishment component includes a second rotating rod rotatably mounted on a mounting plate on the side away from the first rotating rod. The second rotating rod has a replenishment gear that engages with a rack. The replenishment gear is connected to the second rotating rod via a one-way bearing and rotates in the opposite direction to the recovery gear. The second rotating rod has a first transmission gear. The mounting plate has a second support plate, and the second support plate has a rotatably mounted transmission shaft. The transmission shaft has a second transmission gear that engages with the first transmission gear. A first transmission pulley is located at the end of the transmission shaft away from the second transmission gear. A second transmission pulley is located outside the second connecting pulley on the drive screw. The second transmission pulley is connected to the drive screw via a one-way bearing, and rotates in the opposite direction to the second connecting pulley. A transmission belt is mounted on both the first and second transmission pulleys.

[0014] In some embodiments, the pressurized airbag is provided with Velcro, and the Velcro is provided with sterile cloth.

[0015] The present invention has at least the following beneficial effects: This puncture site wound hemostatic pressure band, unlike the prior art, can inflate or deflate the pressure bag through the setting of the driving component, without the need for manual operation by the staff. At the same time, the setting of the escapement mechanism makes the power output of the spring slow and stable, which can be sustained for a longer time. Furthermore, the setting of the gas circulation part allows the pressure bag to automatically inflate or deflate within a fixed time, thereby ensuring that the patient will not suffer physical damage due to forgetting to loosen the hemostatic band. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 For the present invention Figure 1 Explosion structure diagram;

[0018] Figure 3 For the present invention Figure 1 Cross-sectional structural diagram;

[0019] Figure 4 For the present invention Figure 3 Cross-sectional structural diagram;

[0020] Figure 5 For the present invention Figure 4 Mid-section structural schematic diagram;

[0021] Figure 6 For the present invention Figure 5 Enlarged structural diagram of area A in the middle;

[0022] Figure 7 For the present invention Figure 5 Cross-sectional structural diagram;

[0023] Figure 8 For the present invention Figure 7 Cross-sectional structural diagram;

[0024] Figure 9 For the present invention Figure 8 Schematic diagram of the exploded structure.

[0025] In the diagram: 1. Tourniquet body; 2. Mounting plate; 3. Pressure airbag; 4. Spring; 5. Power assembly; 6. Drive component; 61. Spring shaft; 62. Hexagonal groove; 63. Spring barrel; 64. Power gear; 65. Power shaft; 66. Drive gear; 67. Drive circular plate; 68. Circular rod one; 69. Connecting rod; 7. Locking component; 71. Locking rod; 72. Extension plate; 73. Ratchet; 74. Central shaft; 75. Racket tooth; 76. Positioning block; 77. Push spring; 8. Escapement mechanism; 81. First lever; 82. Escape wheel; 83. Second lever; 84. Rotating shaft; 85. Extension plate; 86. Hairspring; 87. Balance wheel; 88. Connecting plate; 89. Escape fork; 9. Gas circulation unit; 10. Gas chamber; 101. Gas reservoir; 102. Guide rail; 103. Sliding plate; 1 04. Round rod II; 105. Rack; 106. Sliding groove; 107. Sealing plate; 108. Air outlet; 109. Air inlet; 1010. Extrusion plate; 1011. Drive screw; 11. Gas recovery component; 111. Rotating rod I; 112. Recovery gear; 113. Connecting gear I; 114. Support plate I; 115. Connecting shaft; 116. Connecting gear II; 117. Connecting pulley I; 118. Connecting pulley II; 119. Connecting belt; 12. Gas replenishment component; 121. Rotating rod II; 122. Replenishment gear; 123. Transmission gear I; 124. Support plate II; 125. Transmission shaft; 126. Transmission gear II; 127. Transmission pulley I; 128. Transmission pulley II; 129. Transmission belt; 13. Velcro; 14. Sterile cloth; 15. Protective cover. Detailed Implementation

[0026] 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, and 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.

[0027] Example 1

[0028] Please see Figure 1-9 The present invention provides a technical solution:

[0029] A pressure band for hemostasis at a puncture site includes a tourniquet body 1, a mounting plate 2 and a protective cover 15 disposed on the tourniquet body 1, a pressure airbag 3 disposed on the tourniquet body 1, and a spring spring 4 disposed on the mounting plate 2.

[0030] The power assembly 5 is mounted on the mounting plate 2. The power assembly 5 drives the spring 4 to provide power for the inflation and deflation of the pressure airbag 3. The setting of the power assembly 5 allows the gas in the pressure airbag 3 to be automatically discharged or inflated, so as to avoid the pressure airbag 3 compressing the patient's limb for a long time, which may lead to limb necrosis.

[0031] The gas circulation unit 9 is installed on the mounting plate 2. The gas circulation unit 9 controls the inflation and deflation of the pressurized airbag 3. The gas circulation unit 9 ensures that the gas in the pressurized airbag 3 will be inflated or deflated at a scheduled time, without the need for staff to pay constant attention, which greatly reduces the workload of the staff.

[0032] The power assembly 5 includes a drive unit 6 mounted on the mounting plate 2, which provides power for inflating and deflating the airbag 3. The drive unit 6 is equipped with a locking member 7, which fixes the spring 4. The drive unit 6 is also equipped with an escapement mechanism 8, which controls the spring 4 to release power slowly and smoothly.

[0033] The drive component 6 includes a mainspring shaft 61 rotatably mounted on the mounting plate 2. The mainspring shaft 61 has a hexagonal groove 62. A mainspring barrel 63 is rotatably mounted on the mainspring shaft 61. The mainspring shaft 61 is connected to the inner end of the mainspring spring 4, and the mainspring barrel 63 is connected to the outer end of the mainspring spring 4. A drive gear 64 is mounted on the mainspring barrel 63. A drive shaft 65 is mounted on the mounting plate 2, and a drive gear 66, which cooperates with the drive gear 64, is mounted on the drive shaft 65. The drive gear 66 is larger than the drive gear 64. A drive plate 67 is mounted on the drive shaft 65, and a rod 68 is mounted on the drive plate 67. A connecting rod 69 is rotatably mounted on the rod 68. The spring spring 4 outputs power to drive the spring box 63 to rotate, which in turn drives the drive gear 64 mounted on the spring box 63 to rotate. When the drive gear 64 rotates, it drives the drive gear 66 mounted on the drive shaft 65 to rotate synchronously, thereby controlling the drive plate 67 mounted on the drive shaft 65 to rotate synchronously, and finally driving the connecting rod 69 to move.

[0034] The locking component 7 includes a locking rod 71 mounted on the mounting plate 2, an extension plate 72 mounted on the locking rod 71, a ratchet 73 mounted on the mainspring shaft 61, a central shaft 74 mounted on the extension plate 72, a ratchet 75 rotatably mounted on the central shaft 74 to cooperate with the ratchet 73, a positioning block 76 mounted on the extension plate 72, and a push spring 77 mounted on the positioning block 76. The push spring 77 is connected to the ratchet 75. The ratchet 73 and ratchet 75 in the locking component 7 ensure that the mainspring 4 will not rotate in the opposite direction when it is wound, thus ensuring that the mainspring 4 is successfully wound.

[0035] The escapement mechanism 8 includes a first column 81 mounted on the mounting plate 2, an escape wheel 82 rotatably mounted on the first column 81, a second column 83 mounted on the mounting plate 2, a rotating shaft 84 mounted on the second column 83, an extension plate 85 mounted on the second column 83, a hairspring 86 mounted on the rotating shaft 84, the outer end of the hairspring 86 being connected to the extension plate 85, a balance wheel 87 mounted on the rotating shaft 84, a connecting plate 88 mounted on the second column 83, and an escape fork 89 mounted on the connecting plate 88 for use with the escape wheel 82. The escapement mechanism 8 ensures that the power of the mainspring 4 can be continuously and stably output, and there will be no situation where the power of the mainspring 4 is released all at once. The escapement mechanism 8 is prior art and well known to those skilled in the art, so it will not be described in detail here.

[0036] The gas circulation unit 9 includes an air chamber 10 mounted on the mounting plate 2, which controls the gas flow within the pressurized airbag 3. A gas recovery component 11 is mounted on the air chamber 10 to release the gas from the inflated pressurized airbag 3. A gas replenishment component 12 is mounted on the air chamber 10 to inflate the deflated pressurized airbag 3. The gas circulation unit 9 ensures that the gas in the pressurized airbag 3 is inflated or deflated at a planned time, eliminating the need for constant monitoring by staff and greatly reducing their workload.

[0037] The air chamber 10 includes an air storage compartment 101 mounted on the mounting plate 2. A guide rail 102 is mounted on the air storage compartment 101. A sliding plate 103 is slidably mounted on the guide rail 102. A round rod 104 is mounted on the sliding plate 103 and is rotatably connected to the connecting rod 69. Racks 105 are mounted on both sides of the sliding plate 103. A sliding groove 106 is formed on the mounting plate 2 and is connected to the inflation port of the pressurized airbag 3. A sealing plate 107 is slidably disposed, and an air outlet 108 and an air inlet 109 are opened on the sealing plate 107. A compression plate 1010 is slidably disposed inside the air storage chamber 101, and one side of the compression plate 1010 is connected to the sealing plate 107. A drive screw 1011 is rotatably disposed inside the air storage chamber 101, and the drive screw 1011 is threadedly connected to the compression plate 1010. The air chamber 10 is configured to store gas in the pressurized air bag 3 when the patient's limbs are relaxed.

[0038] Gas recovery unit 11 includes a rotating rod 111 rotatably mounted on the mounting plate 2 on one side of the guide rail 102. A recovery gear 112, which engages with a rack 105, is mounted on the rotating rod 111. The recovery gear 112 is connected to the rotating rod 111 via a one-way bearing. A connecting gear 113 is mounted on the rotating rod 111. A support plate 114 is mounted on the mounting plate 2. A connecting shaft 115 is rotatably mounted on the support plate 114. A connecting gear 116, which engages with the connecting gear 113, is mounted on the connecting shaft 115. The end of the connecting shaft 115 furthest from the connecting gear 116 is... There is a first connecting pulley 117, and a second connecting pulley 118 is set on the outside of the gas storage chamber 101, with the drive screw 1011 located outside the gas storage chamber 101. The second connecting pulley 118 is connected to the drive screw 1011 through a one-way bearing. A connecting belt 119 is set on the first connecting pulley 117 and the second connecting pulley 118. The gas recovery component 11 is set so that when the patient's limb has been compressed for 30 minutes to stop bleeding, the gas in the pressure bag 3 will return to the gas storage chamber 101, causing the pressure bag 3 to deflate, thereby relaxing the patient's limb. No manual operation is required, which greatly reduces the workload of the staff.

[0039] The gas replenishment component 12 includes a second rotating rod 121 rotatably mounted on the mounting plate 2 on the side away from the first rotating rod 111. A replenishment gear 122, which engages with a rack 105, is mounted on the second rotating rod 121. The replenishment gear 122 is connected to the second rotating rod 121 via a one-way bearing and rotates in the opposite direction to the recovery gear 112. A first transmission gear 123 is mounted on the second rotating rod 121. A second support plate 124 is mounted on the mounting plate 2. A transmission shaft 125 is rotatably mounted on the second support plate 124. A second transmission gear 126, which engages with the first transmission gear 123, is mounted on the transmission shaft 125 on the side away from the first transmission gear 123. The transmission shaft 125 is located away from the first rotating rod 111. One end of the transmission gear 126 is provided with a transmission pulley 127. The drive screw 1011 is located outside the connecting pulley 118 and a transmission pulley 128 is provided. The transmission pulley 128 is connected to the drive screw 1011 through a one-way bearing, and the rotation direction of the transmission pulley 128 is opposite to that of the connecting pulley 118. A transmission belt 129 is provided on the transmission pulley 127 and the transmission pulley 128. The gas replenishment component 12 is provided so that after the patient's limb has been relaxed for ten minutes, the gas in the gas storage chamber 101 will return to the pressurized air bag 3 and re-compress the puncture bleeding site on the patient's limb.

[0040] During the 30-minute compression period, the second round rod 104, which is rotatably connected to the connecting rod 69, will drive the sliding plate 103 to move within the guide rail 102, further driving the rack 105 to move, thereby controlling the rotation of the recovery gear 112. This, in turn, drives the connecting pulleys 117 and 118 to rotate via the first connecting gear 113 and the second connecting gear 116, thereby controlling the rotation of the drive screw 1011. The rotation of the drive screw 1011 drives the compression plate 1010, which is threadedly connected to it, to move. The movement of the compression plate 1010 causes the sealing plate 107 to slide within the sliding groove 106. At this time, a negative pressure is formed in the air storage chamber 101 until the air outlet 108 on the sealing plate 107 connects to the inflation port of the pressurized airbag 3, allowing the gas in the pressurized airbag 3 to be drawn into the air storage chamber 101, thereby relieving the pressure of the pressurized airbag 3 on the patient's limb.

[0041] During the ten-minute rest period, the sliding plate 103 continues to move, driving the rack 105 on the other side to move, which in turn drives the supplementary gear 122 to rotate. Then, through the rotation of the transmission gear 123 and transmission gear 126 connected to the supplementary gear 122, the rotation of transmission gear 126 drives the transmission pulley 127 and transmission pulley 128 to rotate, which in turn drives the drive screw 1011 to rotate in the opposite direction, causing the compression plate 1010 and the sealing plate 107 to rotate in the opposite direction. At this time, high pressure is formed in the air storage chamber 101 until the air inlet 109 on the sealing plate 107 connects to the inflation port of the pressurized airbag 3, so that the gas in the air storage chamber 101 is discharged into the pressurized airbag 3, and the patient's arm is compressed again.

[0042] The gear ratio between the recovery gear 112 and the supplementary gear 122 is three to one, so it takes thirty minutes to go from inflation to deflation, and only ten minutes to go from deflation to inflation. Both the recovery gear 112 and the supplementary gear 122 are connected to the rotating rod 111 and the rotating rod 2 121 through one-way bearings. When one of them rotates, the other will be in an idle state. The connecting pulley 2 118 and the transmission pulley 2 128 are also connected to the drive screw 1011 through one-way bearings, and they rotate in opposite directions.

[0043] In use, the operator first presses the power shaft 65 and then uses a wrench that mates with the hexagonal slot 62 to wind the spring 4. After completion, the spring 4 outputs power, which drives the spring box 63 to rotate, and further drives the power gear 64 set on the spring box 63 to rotate. When the power gear 64 rotates, it drives the drive gear 66 set on the power shaft 65 to rotate synchronously, thereby controlling the drive disc 67 set on the power shaft 65 to rotate synchronously, and finally driving the connecting rod 69 to move.

[0044] During the 30-minute compression period, the second round rod 104, which is rotatably connected to the connecting rod 69, will drive the sliding plate 103 to move within the guide rail 102, further driving the rack 105 to move, thereby controlling the rotation of the recovery gear 112. This, in turn, drives the connecting pulleys 117 and 118 to rotate via the first connecting gear 113 and the second connecting gear 116, thereby controlling the rotation of the drive screw 1011. The rotation of the drive screw 1011 drives the compression plate 1010, which is threadedly connected to it, to move. The movement of the compression plate 1010 causes the sealing plate 107 to slide within the sliding groove 106. At this time, a negative pressure is formed in the air storage chamber 101 until the air outlet 108 on the sealing plate 107 connects to the inflation port of the pressurized airbag 3, allowing the gas in the pressurized airbag 3 to be drawn into the air storage chamber 101, thereby relieving the pressure of the pressurized airbag 3 on the patient's limb.

[0045] During the ten-minute rest period, the sliding plate 103 continues to move, driving the rack 105 on the other side to move, which in turn drives the supplementary gear 122 to rotate. Then, through the rotation of the transmission gear 123 and transmission gear 126 connected to the supplementary gear 122, the rotation of transmission gear 126 drives the transmission pulley 127 and transmission pulley 128 to rotate, which in turn drives the drive screw 1011 to rotate in the opposite direction, causing the compression plate 1010 and the sealing plate 107 to rotate in the opposite direction. At this time, high pressure is formed in the air storage chamber 101 until the air inlet 109 on the sealing plate 107 connects to the inflation port of the pressurized airbag 3, so that the gas in the air storage chamber 101 is discharged into the pressurized airbag 3, and the patient's arm is compressed again.

[0046] The ratchet 73 and ratchet 75 in the locking component 7 prevent the mainspring 4 from rotating in the opposite direction when it is wound, ensuring that the mainspring 4 is successfully wound. The escapement mechanism 8 ensures that the mainspring 4 can output power continuously and stably, without the mainspring 4's power being released all at once. The escapement mechanism 8 is existing technology and is well known to those skilled in the art, so it will not be described in detail here. The gear ratio of the recovery gear 112 and the supplementary gear 122 is 3:1, so it takes 30 minutes to go from inflation to deflation, but only 10 minutes to go from deflation to inflation. The recovery gear 112 and the supplementary gear 122 are both connected to the rotating rod 111 and the rotating rod 121 through one-way bearings. When one rotates, the other will be in an idle state. The connecting pulley 118 and the transmission pulley 128 are also connected to the drive screw 1011 through one-way bearings, and they rotate in opposite directions.

[0047] Example 2

[0048] Please see Figure 1-9 The present invention provides a technical solution:

[0049] Unlike Example 1, the pressure bag 3 is provided with Velcro 13, and a sterile cloth 14 is provided on the Velcro 13. The Velcro 13 makes it easy to replace the sterile cloth 14 that is in contact with the puncture point.

[0050] In use, the operator first presses the power shaft 65 and then uses a wrench that mates with the hexagonal slot 62 to wind the spring 4. After completion, the spring 4 outputs power, which drives the spring box 63 to rotate, and further drives the power gear 64 set on the spring box 63 to rotate. When the power gear 64 rotates, it drives the drive gear 66 set on the power shaft 65 to rotate synchronously, thereby controlling the drive disc 67 set on the power shaft 65 to rotate synchronously, and finally driving the connecting rod 69 to move.

[0051] During the 30-minute compression period, the second round rod 104, which is rotatably connected to the connecting rod 69, will drive the sliding plate 103 to move within the guide rail 102, further driving the rack 105 to move, thereby controlling the rotation of the recovery gear 112. This, in turn, drives the connecting pulleys 117 and 118 to rotate via the first connecting gear 113 and the second connecting gear 116, thereby controlling the rotation of the drive screw 1011. The rotation of the drive screw 1011 drives the compression plate 1010, which is threadedly connected to it, to move. The movement of the compression plate 1010 causes the sealing plate 107 to slide within the sliding groove 106. At this time, a negative pressure is formed in the air storage chamber 101 until the air outlet 108 on the sealing plate 107 connects to the inflation port of the pressurized airbag 3, allowing the gas in the pressurized airbag 3 to be drawn into the air storage chamber 101, thereby relieving the pressure of the pressurized airbag 3 on the patient's limb.

[0052] During the ten-minute rest period, the sliding plate 103 continues to move, driving the rack 105 on the other side to move, which in turn drives the supplementary gear 122 to rotate. Then, through the rotation of the transmission gear 123 and transmission gear 126 connected to the supplementary gear 122, the rotation of transmission gear 126 drives the transmission pulley 127 and transmission pulley 128 to rotate, which in turn drives the drive screw 1011 to rotate in the opposite direction, causing the compression plate 1010 and the sealing plate 107 to rotate in the opposite direction. At this time, high pressure is formed in the air storage chamber 101 until the air inlet 109 on the sealing plate 107 connects to the inflation port of the pressurized airbag 3, so that the gas in the air storage chamber 101 is discharged into the pressurized airbag 3, and the patient's arm is compressed again.

[0053] The ratchet 73 and ratchet 75 in the locking component 7 prevent the mainspring 4 from rotating in the reverse direction when it is being wound, ensuring successful winding. The escapement mechanism 8 ensures that the mainspring 4 can continuously and stably output power, preventing the power from being released all at once. The escapement mechanism 8 is existing technology and well-known to those skilled in the art, so it will not be described in detail here. The gear ratio between the recovery gear 112 and the replenishment gear 122 is three to one, so it takes thirty minutes from inflation to deflation. Inflation takes only ten minutes. The recovery gear 112 and the replenishment gear 122 are connected to the rotating rod 111 and the rotating rod 2 121 via one-way bearings. When one rotates, the other will be in an idle state. The connecting pulley 2 118 and the transmission pulley 2 128 are also connected to the drive screw 1011 via one-way bearings, and rotate in opposite directions. The pressurized airbag 3 is equipped with Velcro 13, and sterile cloth 14 is provided on Velcro 13. The Velcro 13 makes it easy to replace the sterile cloth 14 that is in contact with the puncture point.

[0054] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0055] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tourniquet for hemostasis and pressure application at puncture sites, comprising a tourniquet body (1), a mounting plate (2) disposed on the tourniquet body (1), and a protective cover (15), characterized in that: Also includes Pressure balloon (3), the pressure balloon (3) is set on the tourniquet body (1), and the puncture point is stopped by the pressure of the pressure balloon (3); A spring (4) is mounted on a mounting plate (2); A power assembly (5) is mounted on a mounting plate (2) and drives a spring spring (4) to provide power for inflating and deflating the airbag (3). Gas circulation unit (9) is provided on mounting plate (2) and the inflation and deflation of pressurized airbag (3) are controlled by gas circulation unit (9).

2. The pressure bandage for hemostasis at the puncture site according to claim 1, characterized in that: The power assembly (5) includes a drive member (6) mounted on the mounting plate (2), which provides power for inflating and deflating the airbag (3). The drive member (6) is provided with a locking member (7) which fixes the spring spring (4). The drive member (6) is provided with an escapement mechanism (8) which controls the spring spring (4) to release power slowly and smoothly.

3. The pressure bandage for hemostasis at the puncture site according to claim 2, characterized in that: The driving component (6) includes a spring shaft (61) rotatably mounted on the mounting plate (2), a hexagonal groove (62) on the spring shaft (61), a spring box (63) rotatably mounted on the spring shaft (61), the spring shaft (61) being connected to the inner end of the spring spring (4), the spring box (63) being connected to the outer end of the spring spring (4), a drive gear (64) on the spring box (63), a drive shaft (65) on the mounting plate (2), a drive gear (66) cooperating with the drive gear (64) on the drive shaft (65), the drive gear (66) being larger than the drive gear (64), a drive circular plate (67) on the drive shaft (65), a circular rod (68) on the drive circular plate (67), and a connecting rod (69) rotatably mounted on the circular rod (68).

4. The pressure bandage for hemostasis at the puncture site according to claim 3, characterized in that: The locking component (7) includes a locking rod (71) disposed on the mounting plate (2), an extension plate (72) disposed on the locking rod (71), a ratchet (73) disposed on the spring shaft (61), a central shaft (74) disposed on the extension plate (72), a ratchet tooth (75) rotatably disposed on the central shaft (74) for cooperating with the ratchet tooth (73), a positioning block (76) disposed on the extension plate (72), a push spring (77) disposed on the positioning block (76), and the push spring (77) is connected to the ratchet tooth (75).

5. The pressure bandage for hemostasis at the puncture site according to claim 4, characterized in that: The escapement mechanism (8) includes a first upright (81) mounted on a mounting plate (2), an escape wheel (82) rotatably mounted on the first upright (81), a second upright (83) mounted on the mounting plate (2), a rotating shaft (84) rotatably mounted on the second upright (83), an extension plate (85) mounted on the second upright (83), a hairspring (86) mounted on the rotating shaft (84), the outer end of the hairspring (86) being connected to the extension plate (85), a balance wheel (87) mounted on the rotating shaft (84), a connecting plate (88) mounted on the second upright (83), and an escape fork (89) mounted on the connecting plate (88) for use with the escape wheel (82).

6. The pressure bandage for hemostasis at the puncture site according to claim 5, characterized in that: The gas circulation unit (9) includes an air chamber (10) disposed on the mounting plate (2), which controls the gas flow in the pressurized airbag (3). A gas recovery component (11) is disposed on the air chamber (10), which releases the pressurized airbag (3) in the inflated state. A gas replenishment component (12) is disposed on the air chamber (10), which inflates the pressurized airbag (3) in the deflated state.

7. The pressure bandage for hemostasis at the puncture site according to claim 6, characterized in that: The air chamber (10) includes an air storage chamber (101) mounted on a mounting plate (2). A guide rail (102) is provided on the air storage chamber (101). A sliding plate (103) is slidably mounted on the guide rail (102). A round rod (104) is mounted on the sliding plate (103). The round rod (104) is rotatably connected to a connecting rod (69). Racks (105) are provided on both sides of the sliding plate (103). A sliding groove (106) is provided on the mounting plate (2). 6) Connected to the inflation port of the pressurized airbag (3), a sealing plate (107) is slidably arranged on the sliding groove (106), an air outlet (108) and an air inlet (109) are opened on the sealing plate (107), a compression plate (1010) is slidably arranged in the air storage chamber (101), one side of the compression plate (1010) is connected to the sealing plate (107), a drive screw (1011) is rotatably arranged in the air storage chamber (101), and the drive screw (1011) is threadedly connected to the compression plate (1010).

8. The pressure bandage for hemostasis at the puncture site according to claim 7, characterized in that: The gas recovery component (11) includes a rotating rod (111) rotatably mounted on the mounting plate (2) on one side of the guide rail (102). A recovery gear (112) is mounted on the rotating rod (111) and engages with a rack (105). The recovery gear (112) is connected to the rotating rod (111) via a one-way bearing. A connecting gear (113) is mounted on the rotating rod (111). A support plate (114) is mounted on the mounting plate (2), and a connecting shaft (11) is rotatably mounted on the support plate (114). 5) A second connecting gear (116) is provided on the connecting shaft (115) to cooperate with the first connecting gear (113). A first connecting pulley (117) is provided at the end of the connecting shaft (115) away from the second connecting gear (116). A second connecting pulley (118) is provided on the outside of the gas storage chamber (101) of the drive screw (1011). The second connecting pulley (118) is connected to the drive screw (1011) through a one-way bearing. A connecting belt (119) is provided on the first connecting pulley (117) and the second connecting pulley (118).

9. The pressure bandage for hemostasis at the puncture site according to claim 8, characterized in that: The gas replenishment component (12) includes a second rotating rod (121) rotatably mounted on the mounting plate (2) on the side away from the first rotating rod (111). The second rotating rod (121) is equipped with a replenishment gear (122) that engages with a rack (105). The replenishment gear (122) is connected to the second rotating rod (121) via a one-way bearing and rotates in the opposite direction to the recovery gear (112). The second rotating rod (121) is equipped with a first transmission gear (123). The mounting plate (2) is equipped with a second support plate (124), and a transmission shaft (125) is rotatably mounted on the second support plate (124). A transmission gear two (126) is provided on the drive shaft (125) to cooperate with the transmission gear one (123). A transmission pulley one (127) is provided at the end of the drive shaft (125) away from the transmission gear two (126). A transmission pulley two (128) is provided on the outside of the drive screw (1011) and the drive pulley two (118). The transmission pulley two (128) is connected to the drive screw (1011) through a one-way bearing and the rotation direction of the transmission pulley two (128) is opposite to that of the drive pulley two (118). A transmission belt (129) is provided on the transmission pulley one (127) and the transmission pulley two (128).

10. The pressure bandage for hemostasis at the puncture site according to claim 9, characterized in that: The pressurized airbag (3) is provided with Velcro (13), and a sterile cloth (14) is provided on the Velcro (13).

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