Portable hemostatic device

Abstract

The invention discloses portable hemostatic equipment, and relates to the technical field of medical instruments. Comprising a portable shell; the pressure sensing mechanism is arranged on the shell; the automatic adjusting mechanism is electrically connected with the pressure sensing mechanism and the inflation releasing mechanism; an inflation release mechanism; one end of the tourniquet is connected with the first connecting shaft, the other end of the tourniquet is connected with the second connecting shaft, and a locking mechanism is arranged at the end of the second connecting shaft; through the arrangement of the pressure sensing mechanism, the automatic adjusting mechanism and the inflation releasing mechanism, a closed-loop system capable of adjusting the pressure in the movable pressing block and the air bag along with the time duration can be formed, so that automatic and circulating pressure adjustment is carried out on the wound of a patient in the using process, the pressure in the artery can be accurately sensed, and the pressure in the artery can be accurately controlled. According to the invention, automatic induction type adjustment is carried out, so that ischemia of limbs of a patient is avoided, and the problem of avascular necrosis of the limbs caused by untimely observation or untimely evaluation of ambulance personnel in an emergency treatment process in the prior art is solved.

Description

Technical Field

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

[0002] In the field of medical emergency, some patients may suffer from skin wounds when they are injured. At this time, medical hemostasis equipment is needed to stop bleeding of the patient's external wounds to prevent the patient from endangering his life due to excessive blood loss. If the patient's wound is not treated in time, the wound is very likely to become infected, or cause excessive bleeding in the patient, which can lead to coma, convulsions, Yang collapse and other serious diseases.

[0003] During first aid in the wild, the main method for stopping bleeding from blood vessels is to press the wound with hands first, then use gauze rolls for pressure bandage or elastic bandages to treat it. However, when using bandages, a lot of bleeding will still seep onto the bandages and cannot effectively stop bleeding. When using elastic bandages to tighten the bleeding upper part of the wound to stop bleeding, it is easy to tighten too long and cause tissue necrosis. In order to solve the above problems, the prior art uses some hemostatic devices to replace manual compression. However, due to the limitation of the structure of the existing hemostatic devices, it is not possible to combine the surgical site to perform convenient and fast hemostasis during the hemostasis process. Only using the compression hemostatic method during the hemostasis 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 when in 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. They require 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 untimely observation or evaluation by rescue personnel during first aid. Summary of the invention

[0005] 1. Technical issues to be solved

[0006] In view of the shortcomings of the prior art, the present invention provides a portable hemostasis device, which has the advantages of being able to accurately sense the pressure in the artery and automatically adjust the pressure by sensing, thereby solving the problem of ischemic necrosis of limbs caused by untimely observation or untimely assessment by rescue personnel during first aid.

[0007] (II) 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 arranged on the housing:

[0012] A pressure sensing mechanism, a movable pressure block disposed on the portable housing near the wound, wherein the movable pressure block is movably disposed at a movable end of the portable housing near 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 with the movable pressure block and the air bag arranged on the shell, wherein the air bag is arranged inside the tourniquet and communicated with 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 body, and the other end is matched with the second connecting shaft at the lower end of the shell body, and a locking mechanism is arranged at the end of the second connecting shaft.

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

[0017] A gas cylinder is arranged at the air inlet end of the air inlet cavity on the shell, and a pressure pump is arranged 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 installation cavity in the shell, and the other end of the installation 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 airway on the shell and is connected to the installation cavity. The other end of the pressurized airway is connected to the air pipe, and the electromagnetic switch is electrically connected to the control panel.

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

[0021] Switch housing;

[0022] And disposed in 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 one 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 the pressurized drug administration channel arranged on the shell, and the other end of the pressurized drug administration channel is communicated with the drug administration mechanism.

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

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

[0028] A travel switch is arranged in the housing, and the medicine inlet end of the travel switch is connected to the slide groove, and the medicine outlet end is connected to the medicine delivery groove arranged on the movable pressing block, and a plurality of medicine delivery holes are opened 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 matched with the travel switch.

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

[0031] A travel switch housing, on which a drug administration cannula is provided to match the drug administration groove;

[0032] Also includes:

[0033] Disposed in and 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 with 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 with 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 with the inner cavity of the travel switch housing through the drug inlet.

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

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

[0040] A locking block is rotatably arranged outside the limit block and matches with a fourth spring arranged on the housing, and the fourth spring is arranged outside the housing through a spring pressure block;

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

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

[0043] (III) 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 setting 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 adjustment on the patient's wound during use, so as to accurately sense the pressure in the artery and perform automatic sensing adjustment to avoid causing ischemia of the patient's limbs, thereby solving the problem of ischemia and necrosis of limbs caused by untimely observation or untimely evaluation by rescue personnel during first aid in the prior art.

[0046] 2. Through the setting of the inflation release mechanism, the airbag can be automatically pressurized and adjusted after the parameters are set to adjust the pressure of the tourniquet, avoiding the tourniquet 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, so as to promote the patient's recovery and ensure 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 unidirectionally, which effectively ensures the adjustment effect of the inflation release mechanism, protects the airbag at the same time, and prevents 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 It is a schematic diagram of the structure of the portable hemostasis device of the present invention when it is folded;

[0050] Figure 2 It is a schematic diagram of the structure of the portable hemostasis device of the present invention after being unfolded;

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

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

[0053] Figure 5 For the present invention Figure 3 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 the middle A;

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

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

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

[0059] Fig.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 cavity; 12, pressurized drug delivery channel; 13, inflation channel; 14, mounting cavity; 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, clamp; 62, movable limit block; 63, third spring; 64, locking block; 65, ratchet gear; 66, spring pressure block; 67, fourth spring; 7, airbag; 71, trachea; 8, sealing plug; 9, pressure sensor. DETAILED DESCRIPTION

[0061] 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.

[0062] Embodiment 1:

[0063] See also Figure 1-Figure 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 installed on the housing 1; wherein:

[0065] The pressure sensing mechanism is installed on the portable housing 1 near the patient's wound, and is used to sense the pressure at the patient's wound in real time, providing a basis for judgment 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 release mechanism to operate over time according to the feedback of the pressure sensing mechanism;

[0067] The inflation release mechanism is controlled by the automatic adjustment mechanism and is used in conjunction with the movable pressure block 2 and the air bag 7. The movable pressure block 2 is movably mounted on the movable end of the portable housing 1. The air bag 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 in communication, the movable pressure block 2 and the air bag 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, 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 of the movable pressure block 2 and the airbag 7 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 induction-type regulation to avoid ischemia of the patient's limbs. Through the arrangement of the movable pressure block 2, the tourniquet 3 and the airbag 7, an action mechanism is formed, which acts on the patient's limbs to stop bleeding and facilitate the use of the patient. At the same time, the tourniquet 3 and the airbag 7 are both flexible structures. When in use, they can be folded at the lower arc-shaped bend of the shell 1, saving space and being easy to carry. When in use, the cable tie can be opened to release it for use, which is easy to carry. Through the arrangement of the locking mechanism 6, the tourniquet 3 can be conveniently tightened, so that it is suitable for hemostasis use of different body shapes and different positions of patients, ensuring its scope of application.

[0070] Specifically, the pressure sensing mechanism is a pressure sensor 9 installed on the lower side of the movable pressure block 2, which is in contact with the skin at the patient's wound. The pressure and blood oxygen blood pressure at the patient's wound are monitored through the pressure sensor 9, and the pressure sensor 9 is connected to the automatic adjustment mechanism through a wire to provide blood pressure pressure feedback to the automatic adjustment mechanism. The pressure sensor 9 is a prior art, and the model of the pressure sensor 9 can be selected according to specific needs when used.

[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 a prior art, and the model can be selected according to specific needs when in use.

[0072] Embodiment 2:

[0073] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 and Fig.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 shell 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 shell 1, the other end of the pressurized drug delivery channel 12 is connected to the drug delivery mechanism provided on the shell 1, the other end of the inflation channel 13 is connected to the installation cavity 14 in the shell 1, the movable pressure block 2 is movably mounted in the installation cavity 14, and the other end of the installation 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 at the lower side of the upper sliding plate of the movable pressure block 2, and is used to reset the movable pressure block 2;

[0076] The electromagnetic switch is movably mounted on the end of the pressurized air passage 15 on the housing 1 and is connected to the mounting cavity 14. The other end of the pressurized air passage 15 is connected to the air pipe 71, and the electromagnetic switch is electrically connected to the control panel 5. The amount of power supplied to the electromagnetic switch is controlled by the SMT32 single chip microcomputer.

[0077] It should be noted that in this embodiment, when stopping bleeding, the high-pressure gas is passed into the installation cavity 14 through the gas cylinder 4 through the inflation channel 13, 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 elastic force in the electromagnetic switch, and the high-pressure gas enters the airbag 7 through the pressurized airway 15 and the trachea 71, so that the airbag 7 expands and fixes the device at the injured position of the patient to stop bleeding. At the same time, the electromagnetic switch controls its magnetic flux through the control panel 5, and the control panel 5 is connected to the pressure sensor 9 to form a blood pressure monitoring path that can realize closed-loop control (the principle is the same as that of an electronic sphygmomanometer), that is, when in use, the pressure sensor 9 detects the pressure at the blood vessel and records the changes in the patient's heart beat, and also records the systolic and diastolic pressure values ​​at the same time, and the measured blood pressure value is stored inside the control panel 5 for horizontal comparison, and then the magnetic flux of the electromagnetic switch is automatically controlled when in use to realize automatic adjustment of the tourniquet pressure.

[0078] Specifically, first, 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, and the control panel 5 calculates the minimum pressure resistance 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 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 airbag 7 is slowly discharged until the pressure P between the skin and the airbag 7 is detected. 检测 <Minimum pressure resistance of blood vessels P 血管min When the above operation is repeated, the inflation cycle process within the next specified time period is performed to automatically adjust the pressure of the tourniquet 3, thereby preventing the tourniquet 3 from being pressed on the patient's artery at a high pressure for a long time, causing limb ischemia, and protecting the patient.

[0079] Specifically, by installing a miniature booster pump at the outlet of the gas cylinder 4, it is possible to achieve automatic air intake and exhaust for the installation cavity 14 and the airbag 7, and then achieve automatic pressure adjustment for the inner part of the tourniquet 3, which is simple and convenient to use. At the same time, the control panel 5 controls the booster pump and the electromagnetic switch by connecting the corresponding pins to output control commands, so that the booster pump and the electromagnetic switch are activated. This content is conventional in the art and will not be elaborated in this patent.

[0080] Specifically, in order to avoid cross contamination or infection of the patient's wound when cross-used, sterile gauze is placed or pasted on the inner side of the airbag 7 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 Fig.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 installed on one end of the first electromagnet 155 through the second spring 154, and is used in conjunction with a second air inlet and outlet hole 153 on the side of the switch housing close to the installation cavity 14; the first electromagnet 155 is fixedly installed on the switch housing away from the permanent magnet 151, and a first air inlet and outlet hole 152 is opened on the switch housing.

[0082] It should be noted that in the present embodiment, the first electromagnet 155 is electrically connected to the control panel 5. When in use, the control panel 5 controls the magnetic flux and magnetic pole direction of the first electromagnet 155 to control the flow 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 deflation of the airbag 7.

[0083] Embodiment 3:

[0084] like Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 7 , Figure 8 and Fig. 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 installed in the slide groove 16, and the slide groove 16 is connected with the pressurized drug delivery channel 12 and the drug delivery port 18, and a sealing plug 8 is installed at the drug delivery port 18, which is used to remove the sealing plug 8 for drug delivery when in use;

[0086] The travel switch is fixedly installed in the housing 1, including a travel switch housing 17, and a drug administration cannula 171 is also provided on the travel switch housing 17 to cooperate with the drug administration groove 22 provided on the movable pressing block 2, and the travel switch housing 17 can perform telescopic movement along the length direction of the drug administration groove 22 when in use; 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, the baffle 43 is movably installed in the switch housing 17, and is used in cooperation with the drug inlet 172 provided on the switch housing 17 and the 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, and then the opening and closing of the travel switch is controlled, and when in use, when the travel switch is opened, the liquid or powder added from the drug addition port 18 is pushed into the travel switch through the movement of the slider 41, and reaches the patient's skin surface through the drug administration cannula 171 and the drug administration groove 22, and the patient is medicated;

[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 drug 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 pressure of the font, so that the valve gate 44 is pulled out (not completely pulled out) from the slot corresponding to the drug inlet 172. When administering, first add the liquid medicine or powder medicine into the chute 16 through the drug adding port 18, and then adjust the magnetic flux of the second electromagnet 173 through the control panel 5 to open the travel switch, so that the liquid medicine or powder medicine in the chute 16 enters the drug administration cannula 171 and the drug administration slot 22 through the drug inlet 172, and finally passes through the drug administration hole 24 at the lower end of the drug administration slot 22 to the patient's wound, and the patient is administered the drug; after the drug administration is completed, the magnetic flux of the second electromagnet 173 is adjusted again to close the travel switch, completing the drug administration process.

[0089] As a preferred embodiment, Figure 8 and Fig. 9 As shown, a bellows 23 is also installed on the outside of the drug administration cannula 171 between the travel switch housing 17 and the movable pressing block 2, and 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] Embodiment 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 through a third spring 63, and is extended and retracted along the clamp 61 when in 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 the present 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 for use with the outer side surface of the tourniquet 3. Under the pulling action of the tourniquet 3, the second connecting shaft 32 is driven to rotate clockwise. After being tightened, 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, first manually push the limiting block 62 to move into the card 61, so that the locking block 64 loses 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 sleeved 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 loosening and deflation 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 resistance 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 airbag 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 airbag 7, completing a pressure increase and decompression cycle for a period of time T 循环 The pressurization and decompression process in the process; the above-mentioned cycle is performed 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 to avoid the tourniquet 3 being pressed on the patient's artery for a long time with a high pressure, 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 block 64 loses the force on the ratchet gear 65, which is convenient for rotating the second connecting shaft 32 and removing the tourniquet 3 in time.

[0099] 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. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0100] 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 portable hemostatic device, characterized in that: include: A portable housing (1); and arranged on the housing (1): A pressure sensing mechanism, wherein a movable pressure block (2) is arranged on the portable housing (1) on a side close to the wound, and the movable pressure block (2) is movably arranged at a movable end of the portable housing (1) on a side close to the wound; The automatic adjustment mechanism is a control panel (5), and the control panel (5) is electrically connected to the pressure sensing mechanism and the inflation release mechanism; An inflation release mechanism is controlled by the automatic adjustment mechanism and matches a movable pressure block (2) and an air bag (7) arranged on the housing (1); the air bag (7) is arranged on the inner side of the tourniquet (3) and is connected to the inflation release mechanism through an air pipe (71); The tourniquet (3) has one end connected to a first connecting shaft (31) at the lower end of the shell (1), and the other end matched to a 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).

2. A portable hemostasis device according to claim 1, characterized in that: The inflation release mechanism comprises: A gas cylinder (4) is arranged at the gas inlet end of the gas inlet cavity (11) on the housing (1), and a pressure pump is arranged on the gas cylinder (4) and is electrically connected to the control panel (5), one end of the gas inlet cavity (11) is connected to the gas charging channel (13), the other end of the gas charging channel (13) is connected to the installation cavity (14) in the housing (1), and the other end of the installation cavity (14) is connected to the gas inlet end of the electromagnetic switch; 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 a pressurized air passage (15) on the housing (1) and is connected to the mounting cavity (14). The other end of the pressurized air passage (15) is connected to the air pipe (71), and the electromagnetic switch is electrically connected to the control panel (5).

3. A portable hemostatic device as claimed in claim 2, characterized in that: The electromagnetic switch comprises: Switch housing; And disposed in the switch housing: A permanent magnet (151) is movably disposed at one end of the first electromagnet (155) via a second spring (154) and matches a second air inlet and outlet hole (153) on one 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.

4. A portable hemostatic device as claimed in claim 2, characterized in that: One end of the pressurized drug administration channel (12) is also connected to the pressurized drug administration channel (12) arranged on the shell (1), and the other end of the pressurized drug administration channel (12) is connected to the drug administration mechanism.

5. A portable hemostatic device as claimed in claim 4, characterized in that: The drug delivery mechanism comprises: A slider (41) is movably arranged 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 arranged in the housing (1), and the medicine inlet end of the travel switch is connected to the slide groove (16), and the medicine outlet end is connected to the drug delivery groove (22) arranged on the movable pressing block (2), and a plurality of drug delivery holes (24) are opened in the arc groove at the lower end of the drug delivery groove (22); The valve gate (44) is fixedly arranged on the movable pressure block (2) and is matched with the travel switch.

6. A portable hemostatic device as claimed in claim 5, characterized in that: 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: Disposed in and within the switch housing (17): A second spring (42); The permanent magnetic baffle (43) is movably arranged in the switch housing (17) through the second spring (42), and matches with the drug inlet (172) opened on the 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), and the valve gate (44) matches with the drug inlet (172).

7. A portable hemostatic device according to claim 6, characterized in that: A bellows (23) is also provided on the outside of the drug administration cannula (171) between the travel switch housing (17) and the movable pressing block (2).

8. A portable hemostatic device as claimed in claim 6, 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).

9. A portable hemostatic device as claimed in 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 (62) 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).

10. 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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