Integrated first-aid application

Abstract

The invention discloses an integrated first-aid application, and relates to the field of medical instruments, the integrated first-aid application comprises a closed application and an exhaust assembly, the closed application comprises an application layer, a filling layer and a skin attaching layer which are sequentially compounded and fixed in the thickness direction, medical glue is arranged on the edge of the application layer in the circumferential direction, a plurality of pressurizing fixing assemblies are arranged on the application layer, and the pressurizing fixing assemblies are arranged on the periphery of the application layer. The exhaust assembly comprises an air guide pipe, an outlet one-way valve and a blocking piece, the inlet end of the air guide pipe penetrates through the closed application and is connected with an anti-blocking piece, the outlet one-way valve is arranged at the outlet end of the air guide pipe, and the blocking piece is arranged on the outer side of the outlet one-way valve in a sleeving mode; by means of the integrated design of the closed application and the exhaust assembly, the functions of hemostasis, exhaust, pressurization fixing and anti-blocking dredging are integrated, multiple instruments do not need to be prepared step by step, the problem that in the prior art, exhaust and hemostasis need to be operated separately is solved, the operation time can be saved, the first-aid efficiency of chest wall trauma and tension pneumothorax is improved, and the first-aid effect is good. And the illness delay risk is reduced.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of medical devices, in particular to an integrated first-aid dressing. BACKGROUND

[0002] In the scene of war injury rescue, disaster first aid and daily emergency, chest wall trauma combined with tension pneumothorax is a common life-threatening emergency. In order to gain golden time for subsequent treatment, two core first-aid operations of wound hemostasis and pleural cavity exhaust need to be achieved simultaneously. In the prior art, the first-aid devices for such injuries are designed in a separated manner, lacking an integrated solution, which leads to obvious limitations in the first-aid process.

[0003] In clinical operation, medical staff needs to use a common hemostatic dressing to cover the wound to control bleeding first, and then separately prepare a puncture needle or an exhaust catheter to establish a pleural cavity exhaust channel through a secondary puncture operation. This step-by-step operation mode not only has a complicated process and occupies valuable first-aid time, but more importantly, the hemostatic dressing and the exhaust catheter have no adaptive sealing structure. After the catheter is punctured, the sealing property of the dressing is easily damaged, which leads to weakened hemostatic effect of the wound, and at the same time, the exhaust efficiency may be reduced due to gas leakage. In addition, the separated devices are inconvenient to carry, and in complex environments such as field rescue and battlefield first aid, the delay in device preparation and operation may easily miss the best treatment opportunity and increase the risk of worsening the patient's condition. SUMMARY

[0004] The purpose of the present application is to provide an integrated first-aid dressing to solve the problems of complicated operation and poor sealing of the first-aid devices for chest wall trauma combined with tension pneumothorax in the prior art, delay in treatment by step-by-step operation, and difficulty in meeting the integrated first-aid needs of pneumothorax and bleeding.

[0005] In order to achieve the above-mentioned purpose, the present application provides the following technical solution: an integrated first-aid dressing, comprising a closed dressing and an exhaust assembly, the closed dressing comprising a dressing layer, a filling layer and a skin layer which are sequentially and fixedly compounded in the thickness direction, a medical adhesive being provided on the edge of the dressing layer in a circumferential direction, and a plurality of pressure fixation assemblies being provided on the dressing layer;

[0006] The exhaust assembly comprises a gas guide tube, an outlet one-way valve and a plugging member, the inlet end of the gas guide tube penetrating through the closed dressing and being connected with an anti-blocking member, the outlet one-way valve being provided at the outlet end of the gas guide tube, and the plugging member being sleeved on the outside of the outlet one-way valve;

[0007] A flushing assembly is provided on the gas guide tube, and the flushing assembly is used to unblock the gas guide tube.

[0008] Preferably, the pressure fixation assembly adopts an elastic bandage, which is fixedly arranged on one side or opposite sides of the dressing layer, and is used to apply pressure to the closed dressing and fix the position of the dressing.

[0009] Preferably, the skin layer adopts a non-woven fabric containing polyhexamethylene guanidine hydrochloride, the filling layer adopts a sterile alginate cotton or a super absorbent fiber pad, and the filling layer is pre-soaked with sterile normal saline or an antibacterial liquid.

[0010] Preferably, the air guide tube adopts a crush-resistant spiral steel wire reinforced tube, and the inner side of the tube is provided with a blood-repellent coating.

[0011] The side of the closed dressing close to the skin layer is provided with a relief groove, and the anti-blocking piece is arranged in the relief groove.

[0012] Preferably, the flushing assembly comprises an inlet check valve, a connecting pipe and a connector, the connecting pipe is connected with the air guide tube and the inlet check valve at two ends respectively, and the connector is connected with the inlet check valve away from the connecting pipe.

[0013] The connector is provided with a detachable plug, and a second connecting rope is arranged between the plug and the connector.

[0014] Preferably, the connector adopts a luer connector, and the inlet check valve is an umbrella-shaped check valve, which is used to prevent the backflow of gas or liquid in the air guide tube to the flushing assembly.

[0015] Preferably, the outlet check valve is a duckbill check valve, and the opening pressure of the duckbill check valve is adapted to the pressure in the pleural cavity, which is used to ensure the discharge of high-pressure gas in the pleural cavity and prevent the backflow of external air.

[0016] Preferably, the blocking piece is a sealing cap detachably connected with the outlet of the outlet check valve, a first connecting rope is arranged between the sealing cap and the outlet check valve, and a sealing ring is arranged at the connection between the sealing cap and the outlet check valve.

[0017] Preferably, the blocking piece is an on-off valve connected with the outlet of the outlet check valve, and the on-off valve is a ball valve structure, which is used to realize the rapid opening and closing of the outlet of the outlet check valve.

[0018] Compared with the prior art, the present application has the following beneficial effects:

[0019] 1. The integrated design of the closed dressing and the exhaust assembly in the present application integrates the functions of hemostasis, exhaust, pressure fixation and anti-blocking, and no multiple instruments are needed for step-by-step preparation, which solves the problem of "separate operation of exhaust and hemostasis" in the prior art, saves operation time, improves the first aid efficiency of chest wall trauma combined with tension pneumothorax, and reduces the risk of illness delay.

[0020] 2、The application blocks large blood clots and tissue fragments through the spherical air vent of the anti-blocking piece, reduces attachments with the blood-letting coating on the inner side of the air duct, reduces the clogging rate of the catheter from the source, the luer joint of the flushing assembly can be quickly connected to a syringe, the catheter is unclogged by physiological saline flushing, the imported one-way valve prevents backflow of the flushing liquid, further ensures the smoothness of the exhaust passage, and avoids the operation risk caused by re-puncture.

[0021] 3、The application adopts an elastic bandage through the pressurizing fixing assembly, can apply continuous pressure to the closed dressing, cooperates with the medical glue on the edge of the dressing layer, makes the dressing closely adhere to the skin and is not easy to fall off, shortens the hemostasis time, and the elastic bandage can be adapted to patients with different body types, the fixing reliability is significantly improved, and the emergency failure caused by dressing displacement or catheter disengagement during the transfer process is avoided.

[0022] 4、The application is equipped with an outlet one-way valve and a blocking piece through the exhaust assembly, the one-way valve ensures that the high-pressure gas in the pleural cavity is smoothly discharged and external air cannot backflow, and the blocking piece can be flexibly opened and closed according to the emergency demand, and is suitable for multiple exhaust scenes. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0024] Figure 1 The first perspective three-dimensional structure schematic view provided for the first embodiment of the present application;

[0025] Figure 2 The second perspective three-dimensional structure schematic view provided for the first embodiment of the present application;

[0026] Figure 3 The third perspective three-dimensional structure schematic view provided for the first embodiment of the present application;

[0027] Figure 4 The three-dimensional structure schematic view of the exhaust assembly and its associated components provided for the first embodiment of the present application;

[0028] Figure 5 The three-dimensional structure schematic view provided for the second embodiment of the present application.

[0029] In the drawings:

[0030] 1, closed dressing; 101, dressing layer; 102, skin-adhesive layer; 103, filling layer; 2, exhaust assembly; 201, gas guide pipe; 202, outlet check valve; 203, cap; 3, pressure fixing assembly; 4, flushing assembly; 401, inlet check valve; 402, connecting pipe; 403, joint; 404, plug; 5, anti-blocking piece; 6, avoiding groove; 7, first connecting rope; 8, second connecting rope; 9, on-off valve. DETAILED DESCRIPTION

[0031] In order to make the technical personnel in the art better understand the technical solutions of the present application, the present application will be further described in detail below in combination with the drawings.

[0032] As shown in the accompanying drawings Figure 1 to the accompanying Figure 5 drawings:

[0033] Example 1: The present application provides an integrated first-aid dressing, comprising a closed dressing 1 and an exhaust assembly 2, the closed dressing 1 comprises a dressing layer 101, a filling layer 103 and a skin-adhesive layer 102 which are sequentially and fixedly compounded along the thickness direction, the edge of the dressing layer 101 is circumferentially provided with medical adhesive (model: medical pressure-sensitive adhesive, width: 15-30mm), and a plurality of pressure fixing assemblies 3 are arranged on the dressing layer 101; the exhaust assembly 2 comprises a gas guide pipe 201, an outlet check valve 202 and a blocking piece, the inlet end of the gas guide pipe 201 penetrates through the closed dressing 1, and the inlet end is connected with an anti-blocking piece 5, the outlet check valve 202 is arranged at the outlet end of the gas guide pipe 201, and the blocking piece is sleeved outside the outlet check valve 202; the gas guide pipe 201 is provided with a flushing assembly 4, and the flushing assembly 4 is used for dredging the gas guide pipe 201.

[0034] The application layer 101 adopts polyurethane film with a thickness of 0.15 mm, and a Φ6 mm through hole (0.3 mm thick annular reinforcing rib is arranged in the circumferential direction); the filling layer 103 is sterile alginate cotton or high water absorption fiber pad (thickness 10-15 mm, liquid absorption capacity ≥20 g / g, pre-soaked with 0.1% polyhexamethylene guanidine hydrochloride antibacterial solution, antibacterial rate ≥99%); the skin layer 102 is non-woven fabric containing polyhexamethylene guanidine hydrochloride (thickness 0.5 mm, friction coefficient ≤0.3, meeting the requirements of GB / T16886.10 skin irritation test), and the three are combined by hot melt adhesive (bonding strength ≥2 N / 25 mm). The air guide pipe 201 is a spiral steel wire reinforced medical PVC pipe (inner diameter 3-4 mm, outer diameter 6-7 mm, length 100-150 mm, 304 stainless steel wire diameter 0.5 mm, radial compressive strength ≥50 N, inner side coated with 5 μm polytetrafluoroethylene blood-repellent coating); the anti-blocking piece 5 is a medical PE spherical structure (diameter 12 mm, thickness 1 mm, 12 Φ1 mm air holes), which is arranged in the avoidance groove 6 (width 20 mm, depth 20 mm) on the skin layer 102 side of the closed application 1. The flushing assembly 4 comprises an imported one-way valve 401 (an umbrella-shaped medical silicone valve, opening pressure ≤5 kPa), a connecting pipe 402 (a medical PVC pipe, inner diameter 2 mm, outer diameter 4 mm, length 50 mm, and the air guide pipe 201 is at an angle of 30-60°), a luer connector (6 anti-slip edges are arranged on the outer side), and a plug 404 (medical PP material, with a second connecting rope 8); the outlet one-way valve 202 is a duckbill type medical silicone valve (Shore hardness 50A, opening pressure ≤2 kPa).

[0035] In work, first, the staff assesses the chest wall wound of the patient, removes the large foreign matter, tears off the release paper of the medical adhesive of the closed application 1, aligns the filling layer 103 to the wound, covers the skin around the wound with the application layer 101 (20 mm beyond the edge), and presses the edge for 30 seconds to ensure sealing; if there is a symptom of tension pneumothorax, the blocking piece is opened, and the high-pressure gas in the pleural cavity is discharged through the air guide pipe 201 and the outlet one-way valve 202; the application is pressurized through the pressurizing and fixing assembly 3 to enhance the hemostatic effect; if the air guide pipe 201 is blocked, the plug 404 of the flushing assembly 4 is removed, and normal saline is injected into the connector 403 through a syringe to dredge. Through the integrated design, the functions of hemostasis, air exhaust, and anti-blocking are integrated, the first-aid time is saved, and the treatment efficiency is improved.

[0036] As shown in the accompanying drawings Figure 1 to the accompanying drawings Figure 4 It is shown that in an embodiment of the application, the pressurizing and fixing assembly 3 adopts an elastic bandage, which is fixedly arranged on one side or opposite sides of the application layer 101, and is used for applying pressure to the closed application 1 and fixing the application position.

[0037] Elastic bandage is spandex (30%) and cotton (70%) blended fabric (width 50mm, length 1200-1500mm, stretch rate ≥200%, recovery rate ≥95%), one end is fixed on the edge of the application layer 101 (opposite side of the avoidance slot 6) by sewing, and the sewing line is medical sterile line (breaking strength ≥10N).

[0038] In operation, first, the staff pastes and fixes the closed application 1, winds the elastic bandage around the back of the patient, adjusts the tightness to one finger, and fixes the end; through continuous pressure of the bandage, the filling layer 103 is tightly attached to the wound, the hemostasis time is shortened (30%-40% shorter than the traditional application), and the application is prevented from loosening during transportation.

[0039] As shown in the accompanying Figure 1 to the accompanying Figure 4 As shown in the accompanying

[0040] The content of polyhexamethylene guanidine hydrochloride in the skin-adhesive layer 102 is 0.5%-1%, and the mass per unit area of the non-woven fabric is 30g / m 2 ; the purity of the sterile alginate cotton in the filling layer 103 is ≥99%, the water absorption rate of the superabsorbent fiber pad is ≥30 times, the antibacterial liquid for soaking is 0.1% polyhexamethylene guanidine hydrochloride solution or 0.5% povidone iodine solution, and the soaking amount is 2-3 times the mass of the filling layer 103.

[0041] In operation, first, the staff pastes and fixes the closed application 1, winds the elastic bandage around the back of the patient, adjusts the tightness to one finger, and fixes the end; through continuous pressure of the bandage, the filling layer 103 is tightly attached to the wound, the hemostasis time is shortened (30%-40% shorter than the traditional application), and the application is prevented from loosening during transportation.

[0042] As shown in the accompanying Figure 3 to the accompanying Figure 4 As shown in the accompanying

[0043] The spiral steel wire of the air guide tube 201 is continuously spirally distributed (pitch 5 mm), the tube wall thickness is 1 mm, and the medical PVC material meets the GB / T10003-2021 general test method for plastic films and sheets; the blood-repellent coating is made of polytetrafluoroethylene material, prepared by spraying process, the coating adhesion is greater than or equal to 5 MPa, and the surface contact angle is greater than or equal to 110°; the avoidance groove 6 is a circular recess structure (adapted to the anti-blocking piece 5), the depth is the same as the thickness of the anti-blocking piece 5, and the anti-blocking piece 5 is prevented from protruding and pressing the skin; the air holes of the anti-blocking piece 5 are uniformly distributed in a honeycomb shape (hole spacing 2 mm), and the gas flow rate is greater than or equal to 100 mL / min.

[0044] When working, first, the staff installs the exhaust assembly 2, inserts the air guide tube 201 into the through hole of the application layer 101, and embeds the anti-blocking piece 5 into the avoidance groove 6; the spiral steel wire reinforcing structure can prevent the air guide tube 201 from being pressed flat, the blood-repellent coating reduces the adhesion of blood clots, the air holes of the anti-blocking piece 5 prevent large pieces of tissue fragments from entering, and the three work together to reduce the blockage rate of the air guide tube 201 (blockage rate less than or equal to 10%), and ensure that the exhaust passage is unobstructed.

[0045] As shown in the accompanying drawings Figure 2 to the accompanying Figure 4 It is shown that in one embodiment of the application, the flushing assembly 4 includes an inlet one-way valve 401, a connecting pipe 402 and a connector 403, the connecting pipe 402 is connected with the air guide tube 201 and the inlet one-way valve 401 at both ends respectively, and the connector 403 is connected with the end of the inlet one-way valve 401 away from the connecting pipe 402; a detachable plug 404 is arranged on the connector 403, and a second connecting rope 8 is arranged between the plug 404 and the connector 403.

[0046] The umbrella-shaped valve core of the inlet one-way valve 401 is made of medical silica gel (Shore hardness 40-50A), and the valve seat is interference-fitted with the connecting pipe 402 (fitting gap 0.1 mm); the connecting pipe 402 and the air guide tube 201 are hot-melt welded (welding strength greater than or equal to 5N), and a stainless steel reinforcing ring (diameter 5 mm, thickness 1 mm) is arranged at the welding position; the connector 403 is a standard Luer external connector (taper 1:10, meeting the ISO80369-7 medical infusion device standard); the plug 404 is a Luer internal plug (1 mm thick nitrile rubber sealing pad is arranged on the inner wall), and the second connecting rope 8 is a nylon rope (diameter 0.8 mm, length 40 mm, and the two ends are bound with the plug 404 and the connecting pipe 402 respectively).

[0047] In operation, when the staff finds that the air pipe 201 is not ventilated, the second connecting rope 8 is loosened, the plug 404 is unscrewed, the syringe (with a luer connector) containing 10 mL of sterile normal saline is connected to the connector 403, the normal saline is slowly injected, the flushing liquid enters the air pipe 201 through the inlet one-way valve 401 and the connecting pipe 402, and the blockage is flushed away; after flushing, the syringe is pulled out, and the plug 404 is screwed tightly, so that the inlet one-way valve 401 can prevent the gas or liquid in the air pipe 201 from flowing back, and the uninterrupted first aid process is ensured.

[0048] In an embodiment of the present application, the connector 403 is a luer connector, and the inlet one-way valve 401 is an umbrella-shaped one-way valve, which is used to prevent the gas or liquid in the air pipe 201 from flowing back to the flushing assembly 4.

[0049] The outer thread of the luer connector is M10x1.5, and the surface roughness Ra is 0.8, which can be compatible with all standard luer interface syringes on the market; the opening stroke of the umbrella-shaped one-way valve is 0.5 mm, the sealing pressure when closed is greater than or equal to 1 kPa, and the fitting surface accuracy of the valve core and the valve seat is ±0.02 mm, which ensures no leakage.

[0050] In operation, when the staff connects the syringe to the luer connector, no additional tools are needed, and the connection can be quickly completed (the connection time is less than or equal to 3 seconds); when the flushing liquid is injected, the valve core of the umbrella-shaped one-way valve is opened, and the flushing liquid smoothly enters the air pipe 201; after the injection is stopped, the valve core is reset and closed under the elastic action of itself, so that the gas (such as high-pressure gas in the pleural cavity) or blood and exudate in the air pipe 201 do not flow back to the flushing assembly 4, which avoids pollution of the syringe or cross infection.

[0051] In an embodiment of the present application, the outlet one-way valve 202 is a duckbill-shaped one-way valve, and the opening pressure thereof is adapted to the pressure in the pleural cavity, which is used to ensure that the high-pressure gas in the pleural cavity is discharged and prevent external air from flowing back.

[0052] The duckbill opening width of the duckbill-shaped one-way valve is 3 mm, the length is 5 mm, the material is medical silica gel (Shore hardness 50A), the opening pressure is less than or equal to 2 kPa (adapted to the pressure range of-0.4 to-1.2 kPa in the pleural cavity of an adult, and the pressure can be more than 10 kPa when tension pneumothorax occurs), the reverse sealing pressure when closed is greater than or equal to 0.5 kPa, and the duckbill-shaped one-way valve is in interference fit (fitting length 10 mm) with the air pipe 201.

[0053] In operation, when the staff opens the blocking member, the high-pressure gas in the pleural cavity pushes the duckbill opening of the duckbill-shaped one-way valve to open, and the gas is discharged through the air pipe 201 and the one-way valve; when the pressure in the pleural cavity decreases to close to atmospheric pressure, the duckbill closes under the elastic action of itself, which prevents external air from flowing back into the pleural cavity, avoids aggravation of the pneumothorax symptoms, and ensures the safety and effectiveness of the gas discharge process.

[0054] As attached Figure 4 As shown: In one embodiment of the present invention, the sealing component is a cap 203 that is detachably connected to the outlet of the outlet check valve 202. A first connecting rope 7 is provided between the cap 203 and the outlet check valve 202, and a sealing ring is provided at the connection between the cap 203 and the outlet check valve 202.

[0055] The cap 203 is made of medical-grade PP material (the inner diameter is compatible with the outer diameter of the outlet check valve 202, and the internal thread is M10×1.5). The sealing ring is made of nitrile rubber (2mm thick, Shore A hardness 50A) and is embedded in the groove on the inner wall of the cap 203. The first connecting rope 7 is a nylon rope (1mm in diameter, 50mm in length, with both ends bound to the cap 203 and the air duct 201 respectively). The outer side of the cap 203 is provided with a diamond-shaped anti-slip texture (0.3mm high).

[0056] During operation, when the operator needs to vent, they can quickly unscrew the cap 203 through the anti-slip texture (unscrewing time ≤ 2 seconds). The first connecting rope 7 can prevent the cap 203 from being lost. When venting is complete or no venting is needed, tighten the cap 203. The sealing ring will deform under pressure, achieving a seal at the outlet of the one-way valve 202 (no leakage under a sealing pressure of 0.2MPa), preventing dust and contaminants from entering the one-way valve and keeping the venting passage clean.

[0057] How it works: Quickly assess the location and size of the patient's chest wall wound (usually the front or side of the chest) to ensure that the dressing can completely cover it, remove large foreign objects (such as clothing fragments) from the wound surface, and retain blood clots (to avoid secondary bleeding).

[0058] Remove the release paper from the edge of the occlusive dressing 1. Align the filling layer 103 with the center of the wound. Smoothly cover the skin around the wound with the dressing layer 101 (extending at least 20mm beyond the wound edge). Press the edge of the dressing with your palm for 30 seconds to ensure the medical adhesive adheres tightly to the skin without wrinkles or air bubbles. If the patient experiences symptoms of tension pneumothorax such as difficulty breathing or cyanosis of the lips, quickly unscrew the cap 203. High-pressure gas in the pleural cavity will be discharged through the air tube 201 and the one-way valve 202. Observe the patient's respiratory status. After the symptoms are relieved, the cap 203 can be closed to prevent excessive gas discharge from causing lung collapse.

[0059] Wrap the elastic bandage around the patient's back, ensuring that a finger can be inserted between the bandage and the wound. This will ensure that the filling layer 103 applies continuous pressure to the wound and enhances hemostasis. After securing the end of the bandage, check the edges of the dressing to ensure they are sealed and prevent them from coming loose.

[0060] If the exhaust is not smooth (such as no relief of patient symptoms, no gas discharge of airway 201), it is suspected that the tube cavity is blocked, remove the plug 404, connect the syringe filled with 10 mL of sterile saline to the luer connector, slowly inject saline (injection pressure ≤10 kPa), flush the blockage; pull out the syringe after flushing, re-tighten the plug 404, continue to exhaust.

[0061] After the first aid is completed, record the time of applying the patch, the number of exhaust times, the flushing condition, and periodically check whether the patch is loose and whether the airway 201 is unobstructed during transportation. After arriving at the hospital, cooperate with medical staff for further treatment.

[0062] Example two: as shown in the accompanying Figure 5 The difference between this embodiment and the previous embodiment is that the blocking member is an on-off valve 9 connected to the outlet of the outlet one-way valve 202. The on-off valve 9 is a ball valve structure for quickly opening and closing the outlet of the outlet one-way valve 202.

[0063] The on-off valve 9 is a medical PP material ball valve (passage diameter 3-4 mm, threaded connection with the outlet of the outlet one-way valve 202, thread specification M10x1.5), the valve core is made of polytetrafluoroethylene (low wear coefficient), the handle length is 30 mm (the outer side is provided with anti-slip lines), the opening and closing stroke is 90°, and the opening and closing time is ≤1 second.

[0064] When working, first, the staff needs to rotate the handle of the on-off valve 9 (clockwise 90° to close, counterclockwise 90° to open) to quickly control the opening and closing of the outlet of the outlet one-way valve 202 without repeatedly rotating the cap 203, reducing the operation time (saving 60% operation time compared with the cap 203 type blocking member), especially suitable for emergency situations where the first aid personnel wear gloves, improving the operation convenience.

[0065] Working principle: quickly assess the location of the patient's chest wall wound (usually the front chest or side chest), size (ensure that the patch can completely cover it), remove large foreign matter on the surface of the wound (such as clothing fragments), and retain blood clots (to avoid secondary bleeding).

[0066] Remove the release paper of the medical adhesive on one edge of the closed patch 1, align the filling layer 103 with the center of the wound, and cover the patch layer 101 evenly around the skin of the wound (at least 20 mm beyond the edge of the wound). Press the edge of the patch with your palm for 30 seconds to ensure that the medical adhesive is tightly attached to the skin without wrinkles or bubbles. If the patient has symptoms of tension pneumothorax such as difficulty breathing and cyanotic lips, rotate the handle of the on-off valve 9 to open it, and the high-pressure gas in the pleural cavity is discharged through the airway 201 and the outlet one-way valve 202. Observe the patient's breathing status, and close the on-off valve 9 after the symptoms are relieved to avoid excessive gas discharge leading to lung collapse.

[0067] Wrap the elastic bandage around the patient's back, the tightness is appropriate to be able to stretch into a finger, ensure that the filling layer 103 forms sustained pressure on the wound, enhance the hemostatic effect; after the end of the bandage is tied and fixed, check again whether the edge of the dressing is sealed to prevent loosening.

[0068] If the exhaust is not smooth (such as the patient's symptoms are not relieved, and the airway 201 has no gas discharge), it is suspected that the lumen is blocked, remove the plug 404, connect the syringe containing 10 mL of sterile normal saline to the luer connector, and slowly inject normal saline (the injection pressure is ≤10 kPa) to flush away the blockage; after flushing, pull out the syringe, re-tighten the plug 404, and continue to exhaust.

[0069] After the first aid is completed, record the time of the dressing, the number of exhaust times, the flushing condition, and the transportation process. Regularly check whether the dressing is loose and whether the airway 201 is unobstructed. Cooperate with medical staff for further treatment after arriving at the hospital.

[0070] The above only describes some exemplary embodiments of the present application by way of illustration, and it is needless to say that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present application. Therefore, the above drawings and descriptions are illustrative in nature and should not be understood as limiting the scope of protection of the claims of the present application.

Claims

1. An integrated first aid patch, characterized by: The application relates to a closed dressing (1) and an exhaust assembly (2), the closed dressing (1) comprising a dressing layer (101), a filling layer (103) and a skin layer (102) which are sequentially and fixedly combined in the thickness direction, the dressing layer (101) being provided with medical glue on the edge in the circumferential direction, and a plurality of pressurizing and fixing assemblies (3) being arranged on the dressing layer (101). The exhaust assembly (2) comprises a gas guide pipe (201), an outlet one-way valve (202) and a blocking piece, the inlet end of the gas guide pipe (201) penetrating through the closed dressing (1) and being connected with a block prevention piece (5), the outlet one-way valve (202) being arranged at the outlet end of the gas guide pipe (201), and the blocking piece being arranged outside the outlet one-way valve (202). The gas guide pipe (201) is provided with a flushing assembly (4) for dredging the gas guide pipe (201).

2. The integrated first-aid patch according to claim 1, characterized in that: The pressurizing and fixing assembly (3) is an elastic bandage which is fixedly arranged on one side or opposite sides of the dressing layer (101) and is used for applying pressure to the closed dressing (1) and fixing the dressing position.

3. The integrated first aid patch of claim 1, wherein: The skin layer (102) is a non-woven fabric containing polyhexamethylene guanidine hydrochloride, the filling layer (103) is a sterile alginic acid cotton or a super absorbent fiber pad, and the filling layer (103) is pre-soaked with sterile normal saline or an antibacterial liquid.

4. The integrated first aid patch of claim 1, wherein: The gas guide pipe (201) is a spiral steel wire reinforced pipe which is resistant to flattening and is provided with a blood-reducing coating on the inner side. The closed dressing (1) is provided with a avoiding groove (6) on the side close to the skin layer (102), the block prevention piece (5) is arranged in the avoiding groove (6), the block prevention piece (5) is a spherical structure and is provided with a plurality of air holes.

5. The integrated first aid patch of claim 1, wherein: The flushing assembly (4) comprises an inlet one-way valve (401), a connecting pipe (402) and a joint (403), the connecting pipe (402) is connected with the gas guide pipe (201) and the inlet one-way valve (401) at two ends respectively, and the joint (403) is connected with one end of the inlet one-way valve (401) away from the connecting pipe (402). The joint (403) is provided with a detachable plug (404), and a second connecting rope (8) is arranged between the plug (404) and the joint (403).

6. The integrated first aid patch of claim 5, wherein: The joint (403) is a luer joint, and the inlet one-way valve (401) is an umbrella-shaped one-way valve which is used for preventing the backflow of gas or liquid in the gas guide pipe (201) to the flushing assembly (4).

7. The integrated first aid patch of claim 1, wherein: The outlet one-way valve (202) is a duckbill one-way valve, the opening pressure of which is matched with the pressure in the pleural cavity, so that the high-pressure gas in the pleural cavity is discharged and the backflow of external air is prevented.

8. The integrated first aid patch of claim 1, wherein: The blocking piece is a cap (203) which is detachably connected with the outlet of the outlet one-way valve (202), a first connecting rope (7) is arranged between the cap (203) and the outlet one-way valve (202), and a sealing ring is arranged at the connection position of the cap (203) and the outlet one-way valve (202).

9. The integrated first aid patch of claim 1, wherein: The blocking piece is an on-off valve (9) which is connected with the outlet of the outlet one-way valve (202), the on-off valve (9) is a ball valve structure and is used for realizing the rapid opening and closing of the outlet of the outlet one-way valve (202).

Images