A portable hemostatic device

Abstract

The present invention discloses a portable hemostatic device, which relates to the field of medical device technology. The device comprises: a portable housing; a pressure sensing mechanism disposed on the housing; an automatic adjustment mechanism electrically connected to both the pressure sensing mechanism and the inflation release mechanism; an inflation release mechanism; and a tourniquet connected at one end to a first connecting shaft and at the other end to a second connecting shaft, with a locking mechanism disposed at the end of the second connecting shaft. The pressure sensing mechanism, the automatic adjustment mechanism, and the inflation release mechanism form a closed-loop system that adjusts the pressure within the movable pressure block and the airbag over time, thereby achieving automatic and cyclic pressure regulation at the patient's wound during use, accurately sensing the pressure within the artery and performing automatic induction-type regulation to avoid ischemia of the patient's limbs. This solves the problem of ischemic necrosis of limbs caused by untimely observation or assessment by rescuers during emergency treatment, which exists in the prior art.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and in particular relates to a portable hemostatic device. Background Art

[0002] In the field of medical emergency care, some patients sustain skin wounds due to injuries. Medical hemostasis devices are needed to stop bleeding externally to prevent the patient's life-threatening bleeding. If wounds are not treated promptly, they are prone to infection and may cause excessive bleeding, leading to serious complications such as coma, convulsions, and premature ejaculation.

[0003] During first aid in the wild, the main method for stopping bleeding from blood vessels is to first press the wound with your hands, then use a gauze roll for pressure bandage or an elastic bandage to treat it. However, when using a bandage, a lot of bleeding will still seep into the bandage and cannot effectively stop the bleeding. When using an elastic bandage to tighten the bleeding upper part of the wound to stop bleeding, it is easy to cause tissue necrosis due to tightening for too long. To solve the above problems, the existing technology uses some hemostatic devices to replace manual compression. However, due to the limitations of the structure of the existing hemostatic devices, it is not possible to quickly and conveniently stop bleeding in combination with the surgical site during the hemostatic process. Only using the compression hemostatic method during the hemostatic process cannot effectively and quickly stop the bleeding. At the same time, the pressure used by the compression hemostatic method cannot be determined, which can easily cause secondary damage to the wound. At the same time, the existing hemostatic equipment cannot adjust the tourniquet pressure according to time during use, resulting in the tourniquet being pressed on the patient's artery at a high pressure for a long time, causing limb ischemia. Moreover, most of the existing hemostatic devices are large in size and complicated to operate, requiring professional medical personnel to operate, and are inconvenient to use outdoors or in emergency situations.

[0004] Based on this, the present invention proposes a portable hemostasis device that can accurately sense the pressure in the artery and perform automatic sensing adjustments to solve the problem of limb ischemia and necrosis caused by the rescue personnel's failure to observe or evaluate in time during the first aid process in the above-mentioned existing technology. Summary of the Invention

[0005] (1) Technical problems solved

[0006] In response to the shortcomings of the existing technology, the present invention provides a portable hemostasis device that has the advantages of being able to accurately sense the pressure in the artery and automatically adjust the pressure. It solves the problem of limb ischemia and necrosis caused by the rescue personnel's failure to observe or evaluate in time during the first aid process in the existing technology.

[0007] (2) Technical solution

[0008] In order to achieve the above-mentioned purpose of accurately sensing the pressure in the artery and automatically adjusting the pressure, the present invention provides the following technical solutions:

[0009] A portable hemostatic device comprising:

[0010] portable housing;

[0011] And provided on the housing:

[0012] A pressure sensing mechanism, comprising a movable pressure block disposed on the portable housing on a side close to the wound, wherein the movable pressure block is movably disposed on a movable end of the portable housing on the side close to the wound;

[0013] The automatic adjustment mechanism is a control panel, and the control panel is electrically connected to the pressure sensing mechanism and the inflation release mechanism;

[0014] The inflation release mechanism is controlled by the automatic adjustment mechanism and matches the movable pressure block and the air bag provided on the shell. The air bag is provided inside the tourniquet and is connected to the inflation release mechanism through the trachea.

[0015] One end of the tourniquet is connected to the first connecting shaft at the lower end of the shell, and the other end is matched with the second connecting shaft at the lower end of the shell, and a locking mechanism is provided at the end of the second connecting shaft.

[0016] As one of the preferred embodiments: the inflation release mechanism includes:

[0017] A gas cylinder is provided at the air inlet end of the air inlet cavity on the housing, and a pressure pump is provided on the gas cylinder and is electrically connected to the control panel, one end of the air inlet cavity is communicated with the charging channel, the other end of the charging channel is communicated with the mounting cavity in the housing, and the other end of the mounting cavity is communicated with the air inlet end of the electromagnetic switch;

[0018] A pressure spring is movably arranged in the mounting cavity and matches the movable pressure block;

[0019] The electromagnetic switch is movably arranged at the end of the pressurized air channel on the shell and is connected to the installation cavity. The other end of the pressurized air channel is connected to the air pipe, and the electromagnetic switch is electrically connected to the control panel.

[0020] As one of the preferred embodiments: the electromagnetic switch includes:

[0021] switch housing;

[0022] and disposed within the switch housing:

[0023] A permanent magnet is movably arranged at one end of the first electromagnet through a second spring and matches the second air inlet and outlet hole on the side of the switch housing close to the mounting cavity;

[0024] The first electromagnet is fixedly arranged on the switch housing at a side away from the permanent magnet, and a first air inlet and outlet hole is opened on the switch housing.

[0025] As one of the preferred embodiments: one end of the pressurized drug administration channel is also communicated with a pressurized drug administration channel provided on the housing, and the other end of the pressurized drug administration channel is communicated with a drug administration mechanism.

[0026] As one of the preferred embodiments: the drug delivery mechanism includes:

[0027] A slider movably disposed in a slide groove, wherein the slide groove is connected to the pressurized drug delivery channel and the drug delivery port;

[0028] A travel switch is provided in the housing, wherein the medicine inlet end of the travel switch is connected to the slide groove, and the medicine outlet end of the travel switch is connected to the medicine delivery groove provided on the movable pressing block, and a plurality of medicine delivery holes are provided in the arc groove at the lower end of the medicine delivery groove;

[0029] The valve gate is fixedly arranged on the movable pressure block and is adapted to the travel switch.

[0030] As one of the preferred embodiments: the travel switch includes:

[0031] A travel switch housing is provided with a drug delivery cannula that matches the drug delivery groove;

[0032] Also includes:

[0033] Disposed within the switch housing:

[0034] Second spring;

[0035] The permanent magnetic baffle is movably arranged in the switch housing through the second spring, and matches the drug inlet opened on the switch housing and the second electromagnet arranged at the bottom of the travel switch housing. The second electromagnet is electrically connected to the control panel, and the valve gate matches the drug inlet.

[0036] As one of the preferred implementations: a bellows is further provided on the outside of the drug administration cannula between the travel switch housing and the movable pressing block.

[0037] As one of the preferred implementations: a sealing plug is provided at the drug adding port, and the slide groove is connected to the inner cavity of the travel switch housing through the drug inlet.

[0038] As one of the preferred embodiments: the locking mechanism includes:

[0039] A limit block is arranged in a clamping member on the housing through a third spring;

[0040] The locking block is rotatably arranged outside the limit block and matches the fourth spring arranged on the housing. The fourth spring is arranged outside the housing through the spring pressure block;

[0041] The ratchet gear is arranged on the outer end portion of the second connecting shaft and matches the locking block.

[0042] As one of the preferred implementations: the pressure sensing mechanism includes a pressure sensor provided on the lower side of the movable pressure block, and the pressure sensor is electrically connected to the control panel.

[0043] (3) Beneficial effects

[0044] Compared with the prior art, the present invention provides a portable hemostatic device with the following beneficial effects:

[0045] 1. Through the arrangement of the pressure sensing mechanism, the automatic adjustment mechanism and the inflation release mechanism, a closed-loop system can be formed to adjust the pressure in the movable pressure block and the airbag over time, so as to realize automatic and cyclic pressure regulation of the patient's wound during use, so as to accurately sense the pressure in the artery and perform automatic sensing adjustment to avoid ischemia of the patient's limbs, thereby solving the problem of ischemic necrosis of limbs caused by untimely observation or assessment by rescue personnel during first aid in the existing technology.

[0046] 2. Through the setting of the inflation and release mechanism, the airbag can be automatically pressurized and adjusted after the parameters are set to adjust the pressure of the tourniquet, thereby preventing the tourniquet from being pressed on the patient's artery at a high pressure for a long time, causing limb ischemia, and protecting the patient.

[0047] 3. Through the setting of the drug delivery mechanism, the drug can be delivered to the patient's wound according to the setting during use, thereby promoting the patient's recovery and ensuring the treatment effect on the patient on the basis of hemostasis.

[0048] 4. Through the setting of the locking mechanism, the free end of the tourniquet can be locked in one direction, effectively ensuring the adjustment effect of the inflation release mechanism, while protecting the airbag and preventing the device from shifting and falling during use; it has the advantages of good protection and hemostasis effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 This is a schematic diagram of the structure of the portable hemostatic device of the present invention when it is folded;

[0050] Figure 2 This is a schematic diagram of the structure of the portable hemostatic device of the present invention after it is unfolded;

[0051] Figure 3 is a side view of the portable hemostatic device of the present invention;

[0052] Figure 4 For the present invention Figure 3 Cross-sectional view at AA in the middle;

[0053] Figure 5 For the present invention Figure 3 Cross-sectional view at the middle BB;

[0054] Figure 6 This is a schematic diagram of the structure of the movable pressing block of the present invention when viewed from above;

[0055] Figure 7 For the present invention Figure 2 A partial enlarged view of point A in the middle;

[0056] Figure 8 For the present invention Figure 5 A partial enlarged view of point B in the middle;

[0057] Figure 9 For the present invention Figure 8 A partial enlarged view of point C in the middle;

[0058] Figure 10 For the present invention Figure 8 A partial enlarged view of point D in the middle;

[0059] Figure 11 This is a control principle diagram of the portable hemostasis device of the present invention.

[0060] In the figure: 1. Housing; 11. Air inlet chamber; 12. Pressurized drug delivery channel; 13. Inflating channel; 14. Mounting chamber; 15. Pressurized airway; 151. Permanent magnet; 152. First air inlet and outlet; 153. Second air inlet and outlet; 154. Second spring; 155. First electromagnet; 16. Slide; 17. Travel switch housing; 171. Drug delivery cannula; 172. Drug delivery port; 173. Second electromagnet; 18. Drug delivery port; 2. Movable pressure block; 21. Pressure spring; 22. Drug delivery Groove; 23. Bellows; 24. Dosing hole; 3. Tourniquet; 31. First connecting shaft; 32. Second connecting shaft; 4. Gas cylinder; 41. Slider; 42. Second spring; 43. Permanent magnetic baffle; 5. Control panel; 51. Buzzer alarm; 6. Locking mechanism; 61. Card; 62. Movable limit block; 63. Third spring; 64. Locking card; 65. Ratchet; 66. Spring pressure block; 67. Fourth spring; 7. Airbag; 71. Trachea; 8. Sealing plug; 9. Pressure sensor. DETAILED DESCRIPTION

[0061] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0062] Example 1:

[0063] See also Figures 1-11 , the present invention provides a technical solution:

[0064] A portable hemostatic device comprises a portable housing 1, and a pressure sensing mechanism, an automatic adjustment mechanism, an inflation release mechanism, and a tourniquet 3 mounted on the housing 1; wherein:

[0065] The pressure sensing mechanism is installed on the side of the portable housing 1 close to the patient's wound, and is used to sense the pressure at the patient's wound in real time, providing a judgment basis for the automatic adjustment mechanism;

[0066] The automatic adjustment mechanism is mounted on the portable housing 1 and is used to control the automatic adjustment of the inflation and release mechanism over time based on feedback from the pressure sensing mechanism;

[0067] The inflation release mechanism is controlled by an automatic adjustment mechanism and is used in conjunction with the movable pressure block 2 and the airbag 7. The movable pressure block 2 is movably mounted on the movable end of the portable housing 1. The airbag 7 is mounted on the inner side of the tourniquet 3 and is connected to the inflation release mechanism through the trachea 71. The movable pressure block 2 is movably mounted on the movable end of the housing 1 and is connected to the inflation release mechanism. When the inflation release mechanism is connected and actuated, the movable pressure block 2 and the airbag 7 are controlled to move.

[0068] The tourniquet 3 is installed at the movable end of the shell 1, and one end of the tourniquet 3 is fixedly connected to the first connecting shaft 31 at the lower end of the shell 1, and the other end is used in conjunction with the second connecting shaft 32 at the lower end of the shell 1, and a locking mechanism 6 is provided at the end of the second connecting shaft 32 to connect with the shell 1.

[0069] It should be noted that in this embodiment, the configuration of the pressure sensing mechanism, the automatic adjustment mechanism, and the inflation release mechanism forms a closed-loop system that adjusts the pressure of the movable pressure block 2 and the airbag 7 over time, thereby achieving automatic and cyclic pressure regulation at the patient's wound during use, accurately sensing the pressure within the artery and performing automatic induction-based adjustments to avoid limb ischemia. The configuration of the movable pressure block 2, the tourniquet 3, and the airbag 7 forms an actuating mechanism that acts on the patient's limb to stop bleeding and facilitates use. The tourniquet 3 and airbag 7 are both flexible structures and can be folded into the curved lower portion of the housing 1 during use, saving space and facilitating portability. The tourniquet 3 and airbag 7 can be released for use by simply untying the tie during use, making them convenient to carry. The configuration of the locking mechanism 6 facilitates tightening the tourniquet 3, making it suitable for use on patients of different body shapes and in different body positions, thereby ensuring its wide range of applicability.

[0070] Specifically, the pressure sensing mechanism is a pressure sensor 9 mounted on the underside of the movable pressure block 2, which contacts the patient's skin at the wound site. Pressure sensor 9 monitors the patient's wound pressure and blood oxygen and blood pressure. Pressure sensor 9 is connected to the automatic adjustment mechanism via a wire to provide blood pressure feedback to the automatic adjustment mechanism. The pressure sensor 9 is conventional technology, and the model of pressure sensor 9 can be selected according to specific needs during use.

[0071] Specifically, the automatic adjustment mechanism is a control panel 5 with a built-in SMT32 single-chip microcomputer. The control panel 5 is provided with a display screen for displaying the countdown of the hemostatic bandage and the blood pressure pressure at the wound (one inflation and deflation process completes one blood pressure measurement) and the pressure in the airbag; the SMT32 single-chip microcomputer is an existing technology, and the model can be selected according to specific needs when used.

[0072] Example 2:

[0073] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 and Figure 10 As shown, the inflation release mechanism includes a gas cylinder 4, a pressure spring 21 and an electromagnetic switch; wherein:

[0074] The gas cylinder 4 is detachably mounted on the air inlet end of the air inlet cavity 11 on the housing 1, and the air inlet cavity 11 is respectively connected to the pressurized drug delivery channel 12 and the inflation channel 13 provided on the housing 1. The other end of the pressurized drug delivery channel 12 is connected to the drug delivery mechanism provided on the housing 1, and the other end of the inflation channel 13 is connected to the mounting cavity 14 in the housing 1. The movable pressure block 2 is movably mounted in the mounting cavity 14, and the other end of the mounting cavity 14 is connected to the air inlet end of the electromagnetic switch.

[0075] The pressure spring 21 is movably installed in the installation cavity 14 and is located under the upper sliding plate of the movable pressure block 2 to reset the movable pressure block 2;

[0076] The electromagnetic switch is movably mounted on the end of the pressurized air duct 15 on the housing 1 and is connected to the mounting cavity 14. The other end of the pressurized air duct 15 is connected to the air pipe 71, and the electromagnetic switch is electrically connected to the control panel 5. The amount of current flowing into the electromagnetic switch is controlled by the SMT32 microcontroller.

[0077] It should be noted that in this embodiment, when stopping bleeding, high-pressure gas is introduced into the mounting cavity 14 via the gas cylinder 4 through the inflation channel 13, overcoming the pressure of the pressure spring 21 and causing the movable pressure block 2 to move downward and press against the patient's injured area. Simultaneously, the gas in the mounting cavity 14 overcomes the spring force of the electromagnetic switch, and the high-pressure gas enters the airbag 7 through the pressurized airway 15 and the trachea 71, causing the airbag 7 to expand and secure the device to the patient's injured area to stop bleeding. Simultaneously, the electromagnetic switch controls its magnetic flux via the control panel 5, which is connected to the pressure sensor 9 to form a blood pressure monitoring circuit capable of closed-loop control (the principle is the same as that of an electronic sphygmomanometer). That is, during use, the pressure sensor 9 detects the pressure in the blood vessels and records changes in the patient's heartbeat. It also simultaneously records the systolic and diastolic blood pressure values ​​and stores the measured blood pressure values ​​within the control panel 5 for horizontal comparison. The magnetic flux of the electromagnetic switch is then automatically controlled during use to achieve automatic adjustment of the tourniquet pressure.

[0078] Specifically, after the tourniquet is fixed to the injured part of the patient, the pressure sensor 9 detects the blood pressure in the blood vessels in real time and feeds it back to the control panel 5. The control panel 5 calculates the minimum pressure value P of the blood vessels at the corresponding position of the patient's body. 血管min And the maximum withstand voltage P 血管max Then when the pressure sensor 9 detects the pressure P between the skin and the airbag 7 检测 <Minimum pressure resistance of blood vessels P 血管min When the pressure P between the skin and the air bag 7 is detected, the pressure pump of the gas cylinder 4 is turned on to pressurize the air bag 7; 检测 >The maximum pressure resistance value of blood vessels P 血管maxWhen the pressure pump of the gas cylinder 4 is turned on, the pressure pump of the gas cylinder 4 is controlled to work in reverse, playing the role of a negative pressure pump. At the same time, the positive and negative poles of the electromagnet in the electromagnetic switch are controlled to be opposite, providing reverse suction to the valve core of the electromagnetic switch. Then, in the process of gradually adjusting the magnetic flux of the electromagnet in the electromagnetic switch to increase, under the action of the pressure pump in the gas cylinder 4, the gas in the installation cavity 14 and the air bag 7 is slowly discharged until the pressure P between the skin and the air bag 7 is detected. 检测 <Minimum pressure resistance of blood vessels P 血管min Repeat the above operation to carry out the inflation cycle process within the next specified time period, so as to automatically adjust the pressure of the tourniquet 3, avoid the tourniquet 3 being pressed on the patient's artery at a high pressure for a long time, causing limb ischemia, and protect the patient.

[0079] Specifically, by installing a miniature pressure pump at the outlet of the gas cylinder 4, automatic air intake and exhaust can be achieved for the mounting cavity 14 and the airbag 7, thereby automatically adjusting the pressure inside the tourniquet 3, making it simple and convenient to use. Simultaneously, the control panel 5 controls the pressure pump and electromagnetic switch by outputting control commands via corresponding pins, thereby activating the pressure pump and electromagnetic switch. This is conventional in the art and will not be elaborated upon in this patent.

[0080] Specifically, in order to avoid cross contamination or infection of the patient's wound during cross-use, sterile gauze is placed or pasted on the inside of the airbag 7 during use to avoid direct contact between the airbag 7 and the patient's skin or wound.

[0081] As a preferred embodiment, Figure 5 、 Figure 8 and Figure 10 As shown, the electromagnetic switch includes a switch housing, and a permanent magnet 151, a second spring 154 and a first electromagnet 155 installed in the switch housing, wherein: the permanent magnet 151 is movably mounted on one end of the first electromagnet 155 through the second spring 154, and is used in conjunction with the second air inlet and outlet hole 153 on the side of the switch housing close to the mounting cavity 14; the first electromagnet 155 is fixedly mounted on the switch housing away from the permanent magnet 151, and a first air inlet and outlet hole 152 is provided on the switch housing.

[0082] It should be noted that in this embodiment, the first electromagnet 155 is electrically connected to the control panel 5. When in use, the magnetic flux and magnetic pole direction of the first electromagnet 155 are controlled by the control panel 5 to control the diversion direction of the electromagnetic switch, so that the gas flows through the first inlet and outlet holes 152 and the second inlet and outlet holes 153 to achieve inflation and exhaust of the airbag 7.

[0083] Example 3:

[0084] like Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 、 Figure 7 、 Figure 8 and Figure 9 As shown, the drug delivery mechanism is connected to the pressurized drug delivery channel 12 and includes a slider 41, a travel switch and a valve gate 44; wherein:

[0085] The slider 41 is movably mounted in the slide groove 16, which is connected to the pressurized drug delivery channel 12 and the drug delivery port 18. A sealing plug 8 is installed at the drug delivery port 18 for removing the sealing plug 8 to deliver the drug when in use.

[0086] The travel switch is fixedly installed in the housing 1, including a travel switch housing 17. A drug administration cannula 171 is further provided on the travel switch housing 17 for use in conjunction with the drug administration groove 22 provided on the movable pressure block 2, and when in use, the travel switch housing 17 can perform telescopic movement along the length direction of the drug administration groove 22; and a second spring 42 and a permanent magnetic baffle 43 are also provided in the switch housing 17. The second spring 42 is fixedly installed in the switch housing 17, and the baffle 43 is movably installed in the switch housing 17, and is used in conjunction with a drug inlet 172 provided on the switch housing 17 and a second electromagnet 173 installed at the bottom of the travel switch housing 17. The second electromagnet 173 is electrically connected to the control panel 5, that is, when in use, the magnetic flux of the second electromagnet 173 is controlled by the control panel 5, thereby controlling the opening and closing of the travel switch. When in use, when the travel switch is opened, the movement of the slider 41 pushes the liquid or powder added from the drug addition port 18 into the travel switch, and makes it reach the patient's skin surface through the drug administration cannula 171 and the drug administration groove 22 to administer the drug to the patient;

[0087] The valve gate 44 is fixedly mounted on the movable pressing block 2 , and the upper end of the valve gate 44 is inserted into the travel switch housing 17 and matched with the medicine inlet 172 .

[0088] It should be noted that in this embodiment, when not in use, the valve gate 44 is inserted into the drug inlet 172 to close the drug inlet 172. When in use, the movable pressing block 2 moves downward along the installation cavity 14 under the action of the font pressure, so that the valve gate 44 is pulled out (not completely pulled out) from the slot corresponding to the drug inlet 172. When administering the drug, the liquid or powder is first added to the chute 16 through the dosing port 18, and then the magnetic flux of the second electromagnet 173 is adjusted through the control panel 5 to open the limit switch, so that the liquid or powder in the chute 16 enters the drug administration cannula 171 and the drug administration slot 22 through the drug administration port 172, and finally is applied to the patient's wound through the drug administration hole 24 at the lower end of the drug administration slot 22 to administer the drug to the patient; after the drug administration is completed, the magnetic flux of the second electromagnet 173 is adjusted again to close the limit switch, completing the drug administration process.

[0089] As a preferred embodiment, Figure 8 and Figure 9 As shown, a bellows 23 is also installed on the outside of the drug delivery cannula 171 between the travel switch housing 17 and the movable pressing block 2. The bellows 23 is used to seal the gap between the travel switch housing 17 and the movable pressing block 2 to prevent drug powder or liquid from contaminating the gap between the housing 1 and the movable pressing block 2.

[0090] Example 4:

[0091] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 5 and Figure 7 As shown, the locking mechanism 6 includes a movable limit block 62, a locking block 64 and a ratchet gear 65; wherein:

[0092] The limit block 62 is movably mounted in the clamp 61 on the housing 1 via a third spring 63 and extends and retracts along the clamp 61 during use.

[0093] The locking block 64 is rotatably mounted on the outside of the limiting block 62 and is used in conjunction with a fourth spring 67 mounted on the outside of the housing 1. The fourth spring 67 is mounted on the outside of the housing 1 through a spring pressure block 66.

[0094] The ratchet gear 65 is mounted on the outer end of the second connecting shaft 32 and cooperates with the locking block 64 to achieve one-way locking of the ratchet gear 65 .

[0095] It should be noted that in this embodiment, when in use, the tourniquet 3 is pulled outward around the second connecting shaft 32, and a friction surface is provided on the second connecting shaft 32 to cooperate with the outer side of the tourniquet 3. Under the pulling action of the tourniquet 3, the second connecting shaft 32 is driven to rotate clockwise. After tightening, due to the limiting effect of the locking block 64, the second connecting shaft 32 can be locked to prevent the second connecting shaft 32 from rotating in the opposite direction. When the device needs to be removed after use, the limiting block 62 is first manually pushed into the card 61 to make the locking block 64 lose the force on the ratchet gear 65, which facilitates the rotation of the second connecting shaft 32 and the timely removal of the tourniquet 3.

[0096] The use process and principle of the portable hemostatic device of the present invention include:

[0097] When not in use, the tourniquet 3 and the airbag 7 are folded at the lower arc-shaped bend of the housing 1 for easy carrying.

[0098] When in use: first open the cable tie, and pull the free end of the tourniquet 3 around the second connecting shaft 32 to the outside, so that the second connecting shaft 32 rotates clockwise and is put on the outside of the patient's wound. After tightening, due to the limiting effect of the locking block 64, the second connecting shaft 32 can be locked to prevent the second connecting shaft 32 from rotating in the opposite direction; then, according to the patient's injured part and injury condition, the medical staff sets the working parameters of the control panel 5 according to specific medical knowledge, including the starting time T1 of the tourniquet, the duration of hemostasis T=T2-T1, the time of the pressurization and decompression cycle T 循环 =T / N, N is the number of cycles, the release time T2=T1+T, the detection frequency n of the pressure sensor 9 and other parameters, and then the airbag 7 is intermittently inflated and exhausted according to the set parameters: the high-pressure gas is passed into the installation cavity 14 through the pressurized drug delivery channel 12 through the gas cylinder 4, overcoming the pressure of the pressure spring 21 so that the movable pressure block 2 moves downward and squeezes the injured part of the patient; at the same time, the gas in the installation cavity 14 overcomes the spring force in the electromagnetic switch, and the high-pressure gas enters the airbag 7 through the pressurized airway 15 and the trachea 71, causing the airbag 7 to expand and play a role in stopping bleeding. In a cycle N1, the airbag 7 is inflated according to the above principle. When the pressure sensor 9 detects the pressure P between the skin and the airbag 7 检测 >The maximum pressure value of blood vessels P 血管max When the pressure pump of the gas cylinder 4 is turned on, the pressure pump of the gas cylinder 4 is controlled to work in reverse to play the role of a negative pressure pump. At the same time, the positive and negative poles of the electromagnet in the electromagnetic switch are controlled to be opposite to each other, providing reverse suction to the valve core of the electromagnetic switch. Then, in the process of gradually adjusting the magnetic flux of the electromagnet in the electromagnetic switch to increase, under the action of the pressure pump in the gas cylinder 4, the gas in the installation cavity 14 and the air bag 7 is slowly discharged until the time T of a pressurization and decompression cycle is reached. 循环When the pressure sensor 9 detects the pressure P between the skin and the airbag 7 检测 <Minimum pressure resistance of blood vessels P 血管min When the pressure pump of the gas cylinder 4 is turned on again, the pressure pump acts as a pressure pump to pressurize the air bag 7, completing a pressure increase and decompression cycle for a time T 循环 The pressurization and decompression process in the process; the above-mentioned cycle is carried out N times in sequence within the hemostasis duration T to complete the pressurization and decompression of the airbag 7, and when the air release time T2 is released, the tourniquet is removed to adjust the pressure of the tourniquet 3, so as to avoid the tourniquet 3 being pressed on the patient's artery with a high pressure for a long time, causing limb ischemia, and protecting the patient; at the same time, according to the patient's medication needs, medical staff can set the control parameters of the second electromagnet 173 to use the medication mechanism to administer medication to the patient's wound, thereby achieving a therapeutic effect on the patient's wound; when the device needs to be removed after use, first manually push the limit block 62 to move into the card 61, so that the locking card 64 loses the force on the ratchet gear 65, which facilitates the rotation of the second connecting shaft 32 and timely removes the tourniquet 3.

[0099] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0100] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A portable hemostatic device, characterized by: include: Portable housing (1); And provided on the housing (1): A pressure sensing mechanism, wherein a movable pressure block (2) is arranged on the housing (1) on a side close to the wound, and the movable pressure block (2) is movably arranged at a movable end of the housing (1) on the side close to the wound; The automatic adjustment mechanism is a control panel (5), wherein the control panel (5) is electrically connected to the pressure sensing mechanism and the inflation release mechanism; An inflation release mechanism is controlled by an automatic adjustment mechanism and matches a movable pressure block (2) and an air bag (7) provided on the housing (1); the air bag (7) is provided inside the tourniquet (3) and is connected to the inflation release mechanism via an air tube (71); A tourniquet (3) having one end connected to a first connecting shaft (31) at the lower end of the housing (1) and the other end matched with a second connecting shaft (32) at the lower end of the housing (1), and a locking mechanism (6) provided at the end of the second connecting shaft (32); The inflation release mechanism comprises: The gas cylinder (4) is provided at the air inlet end of the air inlet cavity (11) on the shell (1), and the air inlet cavity (11) is respectively communicated with the pressurized drug delivery channel (12) and the inflation channel (13) provided on the shell (1), the other end of the pressurized drug delivery channel (12) is communicated with the drug delivery mechanism provided on the shell (1), the other end of the inflation channel (13) is communicated with the mounting cavity (14) in the shell (1), the movable pressure block (2) is movably mounted in the mounting cavity (14), and the other end of the mounting cavity (14) is communicated with the air inlet end of the electromagnetic switch; and a pressurizing pump is provided on the gas cylinder (4) and is electrically connected to the control panel (5); A pressure spring (21) is movably arranged in the mounting cavity (14) and matches the movable pressure block (2); An electromagnetic switch is movably arranged at the end of the pressurized air passage (15) on the housing (1) and communicates with the mounting cavity (14); the other end of the pressurized air passage (15) is communicated with the air pipe (71), and the electromagnetic switch is electrically connected to the control panel (5); The drug delivery mechanism comprises: A slider (41) is movably disposed in a slide groove (16), wherein the slide groove (16) is connected to the pressurized drug delivery channel (12) and the drug delivery port (18); A travel switch is provided in the housing (1), wherein the medicine inlet end of the travel switch is communicated with the slide groove (16), and the medicine outlet end is communicated with the medicine delivery groove (22) provided on the movable pressing block (2), and a plurality of medicine delivery holes (24) are provided in the arc groove at the lower end of the medicine delivery groove (22); A valve gate (44) is fixedly mounted on the movable pressure block (2) and is adapted to the travel switch; The travel switch comprises: A travel switch housing (17), wherein a drug administration cannula (171) is provided on the travel switch housing (17) and matches the drug administration groove (22); Also includes: Set in the travel switch housing (17): a second spring (42); The permanent magnetic baffle (43) is movably arranged in the travel switch housing (17) through the second spring (42), and matches the drug inlet (172) opened on the travel switch housing (17) and the second electromagnet (173) arranged at the bottom of the travel switch housing (17). The second electromagnet (173) is electrically connected to the control panel (5). The upper end of the valve gate (44) is inserted into the travel switch housing (17) and matches the drug inlet (172).

2. The portable hemostatic device according to claim 1, characterized in that: The electromagnetic switch comprises: switch housing; and disposed within the switch housing: A permanent magnet (151) is movably disposed at one end of the first electromagnet (155) via a first spring (154) and matches a second air inlet and outlet hole (153) on a side of the switch housing close to the mounting cavity (14); The first electromagnet (155) is fixedly arranged on the switch housing at a side away from the permanent magnet (151), and a first air inlet and outlet hole (152) is opened on the switch housing.

3. The portable hemostatic device according to claim 1, characterized in that: A bellows (23) is further provided on the outside of the drug delivery cannula (171) between the travel switch housing (17) and the movable pressing block (2).

4. The portable hemostatic device according to claim 1, characterized in that: A sealing plug (8) is provided at the drug adding port (18), and the slide groove (16) is connected to the inner cavity of the travel switch housing (17) through the drug inlet (172).

5. The portable hemostatic device according to claim 1, characterized in that: The locking mechanism (6) comprises: A limit block (62) is arranged in a clamping member (61) on the housing (1) via a third spring (63); A locking block (64) is rotatably arranged outside the limit block (62) and matches a fourth spring (67) arranged on the housing (1). The fourth spring (67) is arranged outside the housing (1) through a spring pressure block (66); The ratchet gear (65) is arranged at the outer end of the second connecting shaft (32) and matches the locking block (64).

6. The portable hemostatic device according to claim 1, characterized in that: The pressure sensing mechanism comprises a pressure sensor (9) arranged on the lower side of the movable pressure block (2), and the pressure sensor (9) is electrically connected to the control panel (5).

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