CN219921181U - A supplementary cricothyroid membrane piercing depth of muffler formula for pre-hospital first aid - Google Patents
A supplementary cricothyroid membrane piercing depth of muffler formula for pre-hospital first aid Download PDFInfo
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- CN219921181U CN219921181U CN202321342943.3U CN202321342943U CN219921181U CN 219921181 U CN219921181 U CN 219921181U CN 202321342943 U CN202321342943 U CN 202321342943U CN 219921181 U CN219921181 U CN 219921181U
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- Prior art keywords
- scarf
- puncture
- pipe
- cricothyroid membrane
- type auxiliary
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- 239000012528 membrane Substances 0.000 title claims abstract description 48
- 238000009434 installation Methods 0.000 claims abstract description 15
- 239000003814 drug Substances 0.000 claims description 13
- 230000000844 anti-bacterial effect Effects 0.000 claims description 12
- 240000001624 Espostoa lanata Species 0.000 claims description 7
- 235000009161 Espostoa lanata Nutrition 0.000 claims description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000003589 local anesthetic agent Substances 0.000 claims description 6
- 239000004677 Nylon Substances 0.000 claims description 3
- 229960005015 local anesthetics Drugs 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 230000001154 acute effect Effects 0.000 abstract description 5
- 206010067775 Upper airway obstruction Diseases 0.000 abstract description 4
- 230000001788 irregular Effects 0.000 abstract description 2
- 210000004379 membrane Anatomy 0.000 description 37
- 208000000059 Dyspnea Diseases 0.000 description 6
- 206010013975 Dyspnoeas Diseases 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 208000024891 symptom Diseases 0.000 description 3
- 206010059639 Laryngeal obstruction Diseases 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 210000000845 cartilage Anatomy 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 229920001821 foam rubber Polymers 0.000 description 2
- 208000015181 infectious disease Diseases 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 230000000241 respiratory effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 210000001519 tissue Anatomy 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 206010003497 Asphyxia Diseases 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- 244000261422 Lysimachia clethroides Species 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 208000007536 Thrombosis Diseases 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 210000003685 cricoid cartilage Anatomy 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000003238 esophagus Anatomy 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 210000004247 hand Anatomy 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 210000000867 larynx Anatomy 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000004400 mucous membrane Anatomy 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000002504 physiological saline solution Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000028327 secretion Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 210000003813 thumb Anatomy 0.000 description 1
- 210000000534 thyroid cartilage Anatomy 0.000 description 1
- 210000001685 thyroid gland Anatomy 0.000 description 1
- 238000002627 tracheal intubation Methods 0.000 description 1
Abstract
The utility model discloses a scarf type auxiliary cricothyroid membrane puncture device for pre-hospital first aid, which comprises a scarf and a puncture device, wherein the scarf comprises a scarf body, a first connecting belt arranged at one end of the scarf body and a second connecting belt fixedly arranged at the other end of the scarf body; the utility model provides a muffler body's lateral surface is equipped with the installation cavity, the medial surface of muffler body is equipped with the puncture hole, the installation cavity inlays and is equipped with piercing depth, piercing depth includes press plate, the T shape pipe, limiting plate and pjncture needle, the limiting plate sets firmly in the bottom surface of installation cavity, the coaxial guiding hole of puncture hole has been seted up at the center of limiting plate, one person in charge of the end of T shape pipe is equipped with the press plate, another person in charge of the pipe end of T shape pipe is equipped with the pjncture needle with guiding hole, puncture hole clearance fit, the side tube end of T shape pipe is equipped with the air vent with outside intercommunication, the side tube end of T shape pipe can move along with the T shape pipe and support to press or break away from the limiting plate. The utility model can solve the problems of untimely, irregular and difficult fixation of the cricothyroid membrane puncture of the patient with acute upper airway obstruction.
Description
Technical Field
The utility model relates to the field of emergency medical appliances, in particular to a scarf type auxiliary cricothyroid membrane puncture device for pre-hospital emergency.
Background
The cricoid membrane is positioned between the thyroid cartilage and the cricoid cartilage, has no hard shielding tissue (only soft thyroid gland passes through) before, and is a layer of film only after the cricoid membrane passes through, and has no peripheral harmful parts, thereby being beneficial to puncture. The cricothyroid membrane puncture is one of the first-aid methods clinically adopted for patients with respiratory obstruction and serious dyspnea. The purpose of the cricothyroid membrane puncture is to establish a new respiratory passage through the puncture, thereby relieving dyspnea or asphyxia of the patient.
Emergency cricothyroid puncture may be considered when an emergency condition occurs with laryngeal obstruction, no emergency cricothyroid incision or endotracheal intubation conditions. After touching the clear cricothyroid membrane position, the cricothyroid membrane is punctured by using the large-diameter needle head with the injector rapidly, the needle is advanced to the depth of 5mm after the sense of falling, the injector is pulled out to reserve the needle head after the gas is sucked back, and if the oxygen supply pipeline is connected rapidly, the patient can recover part of oxygen supply. It may win time for tracheotomy. Is an important component of on-site emergency.
The cricothyroid membrane puncture indications include acute laryngeal obstruction, particularly glottic area obstruction, severe dyspnea, not as much as common tracheotomy. In addition, a tracheotomy is required, but when necessary instruments are not needed, the cricothyroid membrane puncture can be advanced. The operation is an emergency measure, and should be carried out in a time as short as possible in a minute and a second. And as an emergency measure, the retention time of the puncture needle is not too long, and is generally not more than 24 hours. If the puncture needle is blocked by blood clot or secretion, the air can be injected by a syringe or a little physiological saline can be used for flushing, so as to ensure the smoothness of the puncture needle.
Most of the common cricothyroid membrane puncture devices are perpendicular to cricothyroid membrane puncture, and the needle is easy to be too deep during puncture, so that mucous membrane of the back wall of the larynx and even esophagus are damaged easily; and the puncture is not easy to fix after puncture, and whether the puncture is completed cannot be accurately judged.
Disclosure of Invention
In view of the above, the utility model provides a scarf type auxiliary cricothyroid membrane puncture device for pre-hospital first aid, which is used for solving the problems of untimely, irregular and difficult fixation of cricothyroid membrane puncture of patients with acute upper airway obstruction in the prior art.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a scarf type auxiliary cricothyroid membrane puncture device for pre-hospital first aid comprises a scarf and a puncture device;
the scarf comprises a scarf body, a first connecting belt fixedly arranged at one end of the scarf body and a second connecting belt fixedly arranged at the other end of the scarf body and detachably connected with the first connecting belt;
the utility model discloses a muffler, including the muffler body, the mounting cavity is equipped with the mounting cavity, the mounting cavity is equipped with the puncture hole with the mounting cavity intercommunication, the puncture device is inlayed to the mounting cavity, the puncture device includes pressing plate, T pipe, limiting plate and pjncture needle, the limiting plate set firmly in the bottom surface of mounting cavity, the coaxial guiding hole of puncture hole has been seted up at the center of limiting plate, one main pipe end of T pipe is equipped with the pressing plate that is located mounting cavity opening part, another main pipe end of T pipe is equipped with the pjncture needle with guiding hole, puncture hole clearance fit, the side pipe end of T pipe is equipped with the air vent with outside intercommunication, the side pipe end of T pipe can move along with T pipe and support to press or break away from the limiting plate.
In order to better realize the technical scheme, optionally, a vent pipe communicated with the outside is connected to the side pipe end of the T-shaped pipe.
Optionally, an antibacterial film for sealing the puncture needle is arranged on the inner side surface of the scarf body.
Optionally, the surface of the antibacterial film facing away from the scarf body is provided with puncture marks around the puncture holes.
Optionally, the first connecting band and the second connecting band are nylon sticky hook structures.
Optionally, the scarf body is a linear elastic structure capable of enclosing into a ring structure.
Optionally, the edge of the pressing plate is pressed against the opening of the mounting cavity.
Optionally, a medicine box is arranged on the outer side surface of the first connecting belt.
Optionally, at least two independent lattices are arranged in the medicine box, and cotton balls which are stained with alcohol or occupy local anesthetics are arranged in the lattices.
The utility model has the beneficial effects that:
the scarf type auxiliary cricothyroid membrane puncture device for pre-hospital emergency treatment adopts a scarf type fixing structure, so that emergency personnel can conveniently and rapidly position cricothyroid membranes and puncture devices of patients.
The scarf type auxiliary cricothyroid membrane puncture device for pre-hospital first aid adopts a structure that the pressing plate, the T-shaped pipe and the limiting plate are matched, so that force application is facilitated, vertical puncture of a puncture needle is ensured, and meanwhile, the puncture needle can be prevented from being inserted deeply.
According to the scarf type auxiliary cricothyroid membrane puncture device for pre-hospital first aid, the antibacterial film is arranged on the inner side surface of the scarf body, so that the puncture needle can be prevented from contacting air before use, and the puncture needle is prevented from being polluted and is convenient to store.
The scarf type auxiliary cricothyroid membrane puncture device for pre-hospital first aid is designed to be provided with the medicine box with the alcohol and local anesthetic cotton balls, so that emergency personnel can disinfect and anesthetize a patient locally in advance, the comfort level of the patient is improved, and the risk of infection is reduced.
The scarf type auxiliary cricothyroid membrane puncture device for pre-hospital first aid has the advantages that the scarf body is made of the sponge easy to deform, and the pressing force application of emergency personnel is facilitated.
Drawings
FIG. 1 is a schematic side view of a scarf-type auxiliary cricothyroid membrane puncturing device for pre-hospital emergency treatment according to an embodiment of the present utility model;
FIG. 2 is a schematic side view of a neck-surrounding assisted cricothyroid membrane puncturing device for pre-hospital emergency treatment according to an embodiment of the present utility model after compression;
FIG. 3 is a front view of a scarf-type auxiliary cricothyroid membrane puncturing device for pre-hospital emergency in accordance with an embodiment of the present utility model;
FIG. 4 is a back view of a scarf-type auxiliary cricothyroid membrane puncturing device for pre-hospital emergency in accordance with an embodiment of the present utility model;
in the reference numerals:
the scarf body 10, the mounting cavity 101, the first connecting belt 11, the second connecting belt 12, the antibacterial film 13, the puncture mark 131 and the adhesive tape 14;
the pressing plate 21, the T-shaped pipe 22, the limiting plate 23, the guide hole 231, the puncture needle 24 and the vent pipe 25;
a medicine box 30.
Detailed Description
The technical scheme of the utility model is described in detail below with reference to the accompanying drawings and the specific embodiments. Wherein like parts are designated by like reference numerals.
Referring to fig. 1 to 4, an embodiment of the utility model discloses a scarf type auxiliary cricothyroid membrane puncture device for pre-hospital first aid, comprising a scarf and a puncture device;
the scarf comprises a scarf body 10, a first connecting belt 11 fixedly arranged at one end of the scarf body 10 and a second connecting belt 12 fixedly arranged at the other end of the scarf body 10 and detachably connected with the first connecting belt 11;
as shown in fig. 3 and fig. 4, the muffler body 10 is a linear elastic structure capable of enclosing into a ring structure, specifically, the material of the muffler body 10 is a foam-rubber cushion, the foam-rubber cushion is easy to deform, when an emergency personnel presses to apply force, and simultaneously contacts with the skin of the human body, discomfort brought by the muffler body 10 can be reduced, the first connecting belt 11 and the second connecting belt 12 are of nylon sticky hook structures, and the first connecting belt 11 and the second connecting belt 12 are fixedly connected with two ends of the muffler body 10 through adhesive tapes 14 respectively.
As shown in fig. 1 and 2, an installation cavity 101 is formed on the outer side surface of the scarf body 10, a puncture hole communicated with the installation cavity 101 is formed on the inner side surface of the scarf body 10, a puncture device is embedded in the installation cavity 101, the puncture device comprises a pressing plate 21, a T-shaped pipe 22, a limiting plate 23, a puncture needle 24 and a vent pipe 25, the limiting plate 23 is fixedly arranged on the bottom surface of the installation cavity 101, a guide hole 231 coaxial with the puncture hole is formed in the center of the limiting plate 23, a pressing plate 21 embedded in the opening of the installation cavity 101 is arranged at one main pipe end of the T-shaped pipe 22, a puncture needle 24 in clearance fit with the guide hole 231 is arranged at the other main pipe end of the T-shaped pipe 22, a vent hole communicated with the outside is formed at the side pipe end of the T-shaped pipe 22, and the side pipe end of the T-shaped pipe 22 can move along with the T-shaped pipe 22 to abut against or separate from the limiting plate 23.
According to the scarf type auxiliary cricothyroid membrane puncturing device for pre-hospital first aid, the pressing plate 21 is pressed, the pressing plate 21 is stressed to drive the T-shaped tube 22 and the puncturing needle 24 to move perpendicular to the cricothyroid membrane until the puncturing needle 24 punctures the cricothyroid membrane after passing through the puncturing hole, and when the side tube end of the T-shaped tube 22 is abutted against the limiting plate 23, the T-shaped tube 22 and the puncturing needle 24 cannot move forwards continuously.
In the embodiment of the present utility model, the side pipe end of the T-shaped pipe 22 is connected with a vent pipe 25 communicated with the outside, the vent pipe 25 is preferably a gooseneck structure, which can prevent bacteria in the outside air from entering and settling, the vent pipe 25 is preferably made of polyvinyl chloride, which is relatively hard, and can prevent the neck-surrounding body 10 from being deformed due to compression, so as to ensure the ventilation effect.
As shown in fig. 1 and 2, an antibacterial film 13 for sealing the puncture needle 24 is arranged on the inner side surface of the scarf body 10, the antibacterial film 13 is made of nontoxic polyethylene which is easy to penetrate, a sterilizing coating is arranged between the antibacterial film 13 and the scarf body 10, and the antibacterial film 13 can prevent the puncture needle 24 from being polluted with the outside air.
In the embodiment of the utility model, the surface of the antibacterial film 13 facing away from the scarf body 10 is provided with a puncture mark 131 around the puncture hole, the puncture mark 131 is preferably a mark which is convenient to identify, such as a circle, and the puncture mark 131 is provided so that a medical staff can quickly align the puncture device with the cricoid film of a patient.
In the embodiment of the present utility model, the edge of the pressing plate 21 is pressed against the opening of the installation cavity 101. The materials of the pressing plate 21 and the limiting plate 23 are preferably polyvinyl chloride, so that the anti-aging plastic is good in wear resistance, high in strength, stable in chemical property, high in ageing resistance and convenient to store.
In the embodiment of the utility model, the T-shaped pipe 22 and the puncture needle 24 are made of SUS304/316L medical stainless steel, so that the T-shaped pipe 22 and the limiting plate 23 can be prevented from being deformed after being collided to cause over-deep puncture and damage to deep tissues. The puncture needle 24 is a 18-size thick puncture needle, has a large opening, and is convenient for rapidly relieving symptoms of dyspnea.
In the embodiment of the present utility model, the outer side surface of the first connecting band 11 is provided with a medicine box 30, at least two independent compartments are provided in the medicine box 30, cotton balls stained with alcohol or occupying local anesthetics are arranged in the compartments, and the names of medicines can be marked on the medicine box 30 for preventing confusion.
The embodiment of the utility model discloses a scarf type auxiliary cricothyroid membrane puncture device for pre-hospital first aid, which comprises the following steps:
if the illness state allows, the first-aid staff can make the patient lie on the back, shoulder pads and heads lean backwards as much as possible. The half-lying position can be taken for those who cannot tolerate the above-mentioned body position. The cotton ball with alcohol in the medicine box 30 is taken out to disinfect local skin between the lower edge of the linear cartilage of the neck of a patient and the upper edge of the circular cartilage arch, the cotton ball with local anesthetic in the medicine box 30 is taken out to anesthetize the local skin at the same position, then the puncture mark 131 of the device is placed aiming at the cricoid membrane to ensure that the puncture device is tightly attached to the skin of the patient, the first connecting belt 11 is connected with the second connecting belt 12 after the puncture device is accurately positioned, the puncture device is fixed, emergency personnel then place thumbs of two hands on the pressing plate 21, press the pressing plate 21 fast with force until the resistance of the collision between the T-shaped pipe 22 and the limiting plate 23 is felt, and meanwhile, whether the symptoms of dyspnea of the patient are relieved or not is observed. If the patient is relieved, the emergency personnel should keep pressing the pressing plate 21 by the left hand, tear the connected first connecting belt 11 and the second connecting belt 12 by the right hand, adjust the positions of the two connecting belts until the scarf body 10 with the loose surface is re-tensioned to be in a tight state, then connect the first connecting belt 11 and the second connecting belt 12, slightly lift the left hand but not leave the pressing plate 21, simultaneously observe whether the puncture needle 24 still stays in the skin of the patient from the side, if the puncture needle still stays in the skin of the patient, the left hand can be released, simultaneously observe whether the patient has symptoms of dyspnea again, if the puncture is not successful, the patient has temporarily stable state, and can carry out next treatment to the hospital. After admission, the patient can be supplied with oxygen through the oxygen pipe connected with the ventilation pipe 25, and the common air pipe 25 is cut as early as possible after the patient has stable condition.
The scarf type auxiliary cricothyroid membrane puncture device for pre-hospital first aid provided by the embodiment of the utility model adopts the scarf type fixing structure, so that emergency personnel can conveniently and quickly position cricothyroid membranes and puncture devices of patients.
The scarf type auxiliary cricothyroid membrane puncture device for pre-hospital first aid adopts a structure that the pressing plate 21, the T-shaped pipe 22 and the limiting plate 23 are matched, so that force application is facilitated, vertical puncture of the puncture needle 24 is ensured, and meanwhile, over-deep insertion of the puncture needle 24 is prevented.
According to the scarf type auxiliary cricothyroid membrane puncture device for pre-hospital first aid, the antibacterial film 13 is arranged on the inner side surface of the scarf body 10, so that the puncture needle 24 is prevented from contacting air before use, and the puncture needle 24 is prevented from being polluted and is convenient to store.
The scarf type auxiliary cricothyroid membrane puncture device for pre-hospital first aid is designed to be provided with the medicine box 30 which is adhered with alcohol and local anesthetic cotton balls, so that emergency personnel can disinfect and anesthetize a patient locally in advance, comfort level of the patient is improved, and risk of infection is reduced.
According to the scarf type auxiliary cricothyroid membrane puncture device for pre-hospital first aid, the scarf body 10 is made of the easily deformable sponge, and pressing and force application of emergency personnel are facilitated.
The utility model is suitable for rescuing patients with acute upper airway obstruction, is simple and easy to operate, has popularization and can obviously improve the survival rate of patients with acute upper airway obstruction.
The technical scheme of the utility model is described in detail in the above with reference to the specific embodiments, and the specific embodiments are used for helping to understand the idea of the utility model. Those skilled in the art will appreciate that many modifications and variations are possible in light of the above teaching.
Claims (9)
1. A scarf type auxiliary cricothyroid membrane puncture device for pre-hospital first aid is characterized by comprising a scarf and a puncture device;
the scarf comprises a scarf body (10), a first connecting belt (11) fixedly arranged at one end of the scarf body (10) and a second connecting belt (12) fixedly arranged at the other end of the scarf body (10) and detachably connected with the first connecting belt (11);
the utility model discloses a muffler, including muffler body (10), including muffler body (10), including the muffler body (10), the lateral surface of muffler body (10) is equipped with installation cavity (101), the medial surface of muffler body (10) is equipped with the puncture hole with installation cavity (101) intercommunication, installation cavity (101) are inlayed and are equipped with piercing depth, piercing depth includes pressing plate (21), T pipe (22), limiting plate (23) and pjncture needle (24), limiting plate (23) set firmly in the bottom surface of installation cavity (101), guiding hole (231) coaxial with the puncture hole have been seted up at the center of limiting plate (23), one main pipe end of T pipe (22) is equipped with pressing plate (21) that are located installation cavity (101) opening part, another main pipe end of T pipe (22) be equipped with guiding hole (231), puncture hole clearance fit's pjncture needle (24), the side pipe end of T pipe (22) is equipped with the air vent with outside intercommunication, the side pipe end of T pipe (22) can move along with T pipe (22) and support or break away from limiting plate (23).
2. A scarf-type auxiliary cricothyroid membrane puncture device for pre-hospital emergency according to claim 1, wherein the side tube end of the T-shaped tube (22) is connected with a vent tube (25) communicated with the outside.
3. A scarf-type auxiliary cricothyroid membrane puncture device for pre-hospital emergency according to claim 1, characterized in that the inner side of the scarf body (10) is provided with an antibacterial film (13) for closing the puncture needle (24).
4. A scarf-type auxiliary cricothyroid membrane puncturing device for pre-hospital emergency as claimed in claim 3, wherein the surface of the antibacterial film (13) facing away from the scarf body (10) is provided with puncture marks (131) around the puncture holes.
5. A scarf-type auxiliary cricket puncture device for pre-hospital emergency according to claim 1, wherein the first connecting strap (11) and the second connecting strap (12) are nylon sticky hook structures.
6. A scarf-type auxiliary cricothyroid membrane puncture device for pre-hospital emergency according to claim 1, wherein the scarf body (10) is a linear elastic structure capable of enclosing a ring-shaped structure.
7. A scarf type auxiliary cricothyroid membrane puncture device for pre-hospital emergency according to claim 6, wherein the edge of the pressing plate (21) is pressed against the opening of the installation cavity (101).
8. A scarf-type auxiliary cricothyroid membrane puncturing device for pre-hospital emergency as claimed in claim 1, wherein the outer side of the first connecting strap is provided with a medicine box (30).
9. The scarf type auxiliary cricothyroid membrane puncturing device for pre-hospital emergency treatment according to claim 8, wherein at least two independent compartments are arranged in the medicine box (30), and cotton balls which are stained with alcohol or occupy local anesthetics are arranged in the compartments.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN202321342943.3U CN219921181U (en) | 2023-05-30 | 2023-05-30 | A supplementary cricothyroid membrane piercing depth of muffler formula for pre-hospital first aid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN202321342943.3U CN219921181U (en) | 2023-05-30 | 2023-05-30 | A supplementary cricothyroid membrane piercing depth of muffler formula for pre-hospital first aid |
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Publication Number | Publication Date |
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CN219921181U true CN219921181U (en) | 2023-10-31 |
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ID=88494594
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN202321342943.3U Active CN219921181U (en) | 2023-05-30 | 2023-05-30 | A supplementary cricothyroid membrane piercing depth of muffler formula for pre-hospital first aid |
Country Status (1)
Country | Link |
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CN (1) | CN219921181U (en) |
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2023
- 2023-05-30 CN CN202321342943.3U patent/CN219921181U/en active Active
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