An emergency puncture needle

Abstract

The present invention relates to the field of medical puncture instruments, specifically an emergency puncture needle, including a puncture needle and a retention tube connected thereto, the puncture needle including a steel needle, a cannula and a needle seat, an isolation plug is arranged in the needle seat, one end of the cannula is connected to the needle seat, the steel needle pierces the isolation plug from the tail end of the needle seat and passes out from the cannula, the retention tube is connected to the needle seat, and a one-way valve is arranged at the free end of the retention tube; the end of the steel needle is connected to a detection component through a hose, a closed-end clamp is arranged on the hose, the detection component includes a negative pressure water ball, a connection port is arranged at the bottom of the negative pressure water ball, a gas-liquid one-way film for preventing liquid backflow is arranged in the connection port, an adapter is arranged at the end of the hose, and the adapter is connected to the connection end. The present invention can solve the technical problems that the existing syringe puncture is not convenient for retaining the needle, and it is not possible to intuitively detect whether the puncture needle has accurately pierced into the pleural cavity.

Description

Technical Field

[0001] The invention relates to the field of medical puncture instruments, in particular to an emergency puncture needle. Background Art

[0002] Pneumothorax refers to the state of gas accumulation caused by the entry of gas into the pleural cavity. It is mostly caused by lung disease or external force, which causes the rupture of lung tissue and visceral pleura, or the rupture of tiny emphysematous bubbles near the surface of the lung. The air in the lung and bronchi escapes into the pleural cavity, causing the pressure in the pleural cavity to increase, and then causes lung collapse, respiratory and circulatory dysfunction and other problems. Once a pneumothorax occurs in the wild or outdoors, and emergency situations such as difficulty breathing occur, the patient needs to be punctured immediately for emergency treatment. However, there is currently no puncture instrument dedicated to emergency treatment of pneumothorax. Therefore, the commonly used emergency method is to use a large syringe for puncture and extraction. After extraction, a one-way valve is made at the tail end of the syringe with medical gloves to prevent air from being sucked back into the pleural cavity. After completing the above operations, the patient is quickly sent to the hospital for etiology investigation and subsequent treatment. The existing technology still has the following technical problems during use:

[0003] 1. Inconvenient to leave it in place: The needle of the syringe is a steel needle. If the needle is left in place during the transfer, it may pierce the patient's internal organs and cause secondary injury to the patient. If it is not left in place, patients with recurrent pneumothorax will need to be punctured and vented again during the transfer process, which can easily cause infection. Moreover, if the patient needs closed chest drainage after being sent to the hospital, the tube needs to be reintubated and replaced, causing the patient to repeatedly suffer from the pain of puncture.

[0004] 2. It is not possible to visually detect whether the puncture needle has accurately penetrated the pleural cavity. The current judgment method is to repeatedly draw the piston rod of the syringe during the needle insertion process, and feel the suction force. If the puncture needle penetrates into the pleural cavity, the resistance during pulling is reduced. At this time, continue to pull the piston rod outward to expel the gas. The above method is not intuitive and is easily affected by subjective factors and is inaccurate, which may lead to problems such as accidental injury to internal organs by the needle tip.

[0005] 3. It is necessary to make a one-way valve on site, which is cumbersome and time-consuming, and can easily cause outside air to flow into the chest cavity. Summary of the invention

[0006] The present invention is intended to provide an emergency puncture needle to solve the technical problems that the existing syringe puncture is inconvenient to leave the needle in place and it is impossible to visually detect whether the puncture needle has accurately punctured the pleural cavity.

[0007] In order to achieve the above object, the present invention adopts the following technical scheme:

[0008] An emergency puncture needle comprises a puncture needle and a retention tube connected thereto, the puncture needle comprises a steel needle, a sleeve and a needle seat, an isolation plug is arranged in the needle seat, one end of the sleeve is connected to the needle seat, the steel needle penetrates into the isolation plug from the tail end of the needle seat and passes out from the sleeve, the retention tube is connected to the needle seat, and a one-way valve is arranged at the free end of the retention tube; the end of the steel needle is connected to a detection component through a hose, a closed-end clamp is arranged on the hose, the detection component comprises a negative pressure water ball, a connecting end is arranged at the bottom of the negative pressure water ball, a gas-liquid one-way film for preventing liquid backflow is arranged in the connecting end, an adapter is arranged at the end of the hose, and the adapter is connected to the connecting end.

[0009] The principle of this program: After determining the puncture point, insert the needle tip of the steel needle into the body tissue from the puncture point, and open the closing clamp to continue inserting the needle. During the insertion of the needle, the cannula enters the skin tissue together. When the steel needle enters the pleural cavity, under the action of negative pressure, the gas in the pleural cavity enters the negative pressure water ball along the steel needle, the hose, and the connecting end. Obvious bubbles can be observed in the negative pressure water ball. At this time, stop inserting the needle to avoid the needle tip from piercing the lung tissue; then withdraw the steel needle, leave the cannula in the patient's body, and use the patient's spontaneous breathing movement to squeeze out the remaining gas in the pleural cavity. Since the free end of the indwelling tube is provided with a one-way valve, it can prevent the outside air from being inhaled back into the body during breathing; after completing the above operations, the patient will be quickly sent to the hospital for etiology investigation and subsequent treatment.

[0010] Beneficial effects:

[0011] 1. It can realize puncture and indwelling drainage at the same time: the puncture needle is set to a two-layer structure, and the inner steel needle is used for puncture. After puncture, the steel needle is withdrawn and the cannula is left in the body, which will not cause secondary puncture to the internal organs and other body tissues, and has high safety. When sending the patient to the hospital, the patient's spontaneous breathing is used to expel the remaining gas, and there is no need for repeated puncture, which effectively reduces the patient's puncture pain and psychological pressure, and has strong practicality. The indwelling tube and cannula can be used continuously. If follow-up treatment is required after sending the patient to the hospital, such as closed chest drainage, the indwelling tube can be directly connected to an external water seal bottle without re-insertion and replacement of the tube.

[0012] 2. The insertion of the puncture needle can be detected visually, which is safer: when the puncture needle is inserted into the pleural cavity, bubbles will be generated in the negative pressure water balloon, which can remind the operator to stop inserting the needle to avoid the needle tip from penetrating too deep and damaging the lung tissue. Compared with the existing judgment by the piston of the suction syringe, this application can detect more quickly, intuitively and accurately, and is safer.

[0013] 3. The integrated structural design does not require on-site production of valves or assembly of puncture instruments. It can be used directly for puncture after opening the packaging bag, which saves time and is easy to operate. It is more suitable for emergency first aid scenarios such as outdoors or in the wild.

[0014] Preferably, as an improvement, the detection component also includes a transparent outer shell, the negative pressure water ball floats in the chamber of the outer shell, and a load-bearing part is provided on the lower surface of the negative pressure water ball, and a telescopic tube is provided at the connecting end, and the telescopic tube passes through the outer shell and is connected to the adapter.

[0015] Beneficial effect: by providing a transparent outer shell, the negative pressure water ball floats in the chamber of the outer shell, and a load-bearing part is provided at the bottom of the negative pressure water ball (the bottom has greater gravity), which can ensure that the bottom of the negative pressure water ball is always facing downward after turning over, thereby ensuring that gas enters from the bottom of the negative pressure water ball, making it easy to observe bubbles; after adopting the above design, during the puncture process, there is no need to care whether the negative pressure water ball is in a stable state. Even if the negative pressure water ball or the outer shell rolls over, it will not affect the gas entering from the bottom of the negative pressure water ball to generate bubbles. It is more convenient to use and more suitable for emergency rescue.

[0016] Preferably, as an improvement, a transparent protective tube is further provided at the tail end of the needle seat, the protective tube is threadedly connected to the needle seat, a rubber plug is provided inside the protective tube, an end cover is provided at the end of the protective tube, the end cover is detachably connected to the protective tube, the steel needle passes through the end cover, the rubber plug and the isolation plug in sequence, the steel needle is fixedly connected to the end cover and slidably connected to the rubber plug; a handle is also provided on the side wall of the end cover.

[0017] Beneficial effect: When withdrawing the needle, pinch the handle and push backward to make the end cover withdraw from the end of the protective tube, and the steel needle will be withdrawn accordingly. When the needle tip is inside the rubber stopper, hold the protective tube and rotate it to detach the protective tube from the needle seat. By providing the protective tube and the rubber stopper, the needle tip can be shielded to avoid needle stick injuries caused by randomly placing the steel needle after it is pulled out. Especially in emergency treatment, the steel needle may be placed aside casually after it is pulled out, which may easily injure others.

[0018] Preferably, as an improvement, a negative pressure airbag is further provided at the head end of the needle seat, an air duct connected thereto is provided on the negative pressure airbag, an air inlet one-way valve is provided in the air duct, the air duct is provided along the side wall of the needle seat, and a cap body for sealing the air duct is provided at the free end of the air duct, the cap body is fixedly connected to the protective tube, and when the protective tube rotates, the cap body is detached from the air duct to connect the air duct with the outside.

[0019] Beneficial effects: The negative pressure airbag is initially in a compressed and tightened state, attached to the head end of the needle seat, takes up little space, and does not affect the normal puncture operation. When the steel needle is pulled out and the protective tube is rotated to unscrew the cap, the airway tube is connected to the outside world. Since an air inlet one-way valve is provided in the airway tube, gas can only enter but not exit. At this time, outside air enters the negative pressure airbag, and the negative pressure airbag expands to compress the puncture point. On the one hand, it can achieve compression and hemostasis, and on the other hand, it can fix the cannula to prevent it from falling out during the transfer of the patient. Compared with manual patch fixation, the present application does not require on-site tearing and fixing of the patch, and the operation is simpler. It is very suitable for emergency puncture rescue, which can simplify the operation process and save operation time.

[0020] Preferably, as an improvement, the side of the negative pressure airbag in contact with the patient's skin is provided with an adhesive dressing layer, the adhesive dressing layer includes a dressing and a sterile tape, the dressing is provided on the surface of the negative pressure airbag close to the sleeve, the sterile tape is provided on the surface of the negative pressure airbag away from the sleeve, and the surfaces of the dressing and the sterile tape are provided with release paper.

[0021] Beneficial effects: The dressing can further absorb exudate, stop bleeding, seal the puncture point, and avoid wound infection. The sterile tape can be used to stick the airbag to the skin to prevent the cannula from being pulled out when the airbag swings, making the fixation more stable and reliable.

[0022] Preferably, as an improvement, the negative pressure airbag is detachably arranged at the head end of the needle seat through a bottom plate.

[0023] Beneficial effect: The negative pressure airbag is detachably arranged on the needle seat. When the patient is sent to the hospital, the negative pressure airbag can be conveniently removed to clean the puncture point and disinfect the puncture point to ensure that the puncture point is clean and sterile to avoid wound infection.

[0024] Preferably, as an improvement, the end of the indwelling tube is also provided with an adapter, and the one-way valve is connected to the adapter.

[0025] Beneficial effect: An adapter is provided at the end of the indwelling tube to facilitate the removal of the one-way valve and the connection of other instruments. For example, when the patient also has hemothorax, the one-way valve can be removed to connect the syringe for operations such as extracting accumulated blood or fluid. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0027] Figure 2 This is a schematic diagram of the structure of the puncture needle after being placed in the first embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of the structure of the puncture needle after being placed in the second embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of the expansion of the bottom plate in the second embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram of the structure of the puncture needle after being placed in the third embodiment of the present invention;

[0031] Figure 6 This is a structural diagram of Embodiment 5 of the present invention. DETAILED DESCRIPTION

[0032] The following is further described in detail through specific implementation methods:

[0033] The marks in the drawings of the specification include: puncture needle 1, steel needle 11, cannula 12, needle seat 13, isolation plug 131, indwelling tube 2, one-way valve 3, hollow tube 31, capsule membrane 32, hose 4, closed-end clamp 41, negative pressure water ball 5, load-bearing part 51, telescopic tube 52, outer shell 6, connecting tube 61, connecting end 56, protective tube 7, rubber plug 70, end cover 71, handle 72, negative pressure airbag 8, air guide tube 80, cap body 801, dressing 81, sterile tape 82, bottom plate 83, card hole 831, syringe barrel 9.

[0034] Embodiment 1

[0035] like Figure 1-2 As shown, an emergency puncture needle comprises a puncture needle 1 and a retention tube 2 connected thereto, the puncture needle 1 comprises a steel needle 11, a sleeve 12 and a needle seat 13, the needle seat 13 is a cylindrical structure and its head end is conical, an isolation plug 131 is arranged in the needle seat 13, the circumferential side wall of the isolation plug 131 is glued and fixed to the inner wall of the needle seat 13, and the isolation plug 131 has good elasticity, after the steel needle 11 is withdrawn, the isolation plug 131 is closed to seal the needle seat 13; one end of the sleeve 12 is connected to the conical part at the head end of the needle seat 13, the steel needle 11 penetrates into the isolation plug 131 from the tail end of the needle seat 13 and passes through the sleeve 12; the retention tube 2 is connected to the needle seat 13, the needle seat 13 in this embodiment is a three-way, and the isolation plug 131 is located at the tail end of the needle seat 13 to seal the channel at its tail end.

[0036] The free end of the indwelling tube 2 is provided with a one-way valve 3. Specifically, the end of the indwelling tube 2 is provided with an adapter, and the one-way valve 3 is connected to the adapter; Figure 2As shown, the one-way valve 3 in this embodiment is a one-way membrane valve, specifically including a hollow tube 31 and at least two layers of capsule membrane 32, each layer of capsule membrane 32 is composed of two symmetrical valves, the valve is an arched structure, one end of the two valves is fixed on the inner wall of the hollow tube 31, and the free ends are naturally attached together to close the hollow tube 31. When the patient inhales, the lungs expand, and the gas in the pleural cavity is squeezed into the indwelling tube 2. The gas squeezes the valve to open it. When the patient exhales, the lungs shrink, and outside air enters the valve. Since the two valves are in an arched structure, gas can be prevented from entering.

[0037] like Figure 1 As shown, the end of the steel needle 11 is connected to the detection component through the hose 4, and a closed clamp 41 is provided on the hose 4. When not in use, the closed clamp 41 clamps the hose 4; the detection component includes a negative pressure water ball 5. In order to facilitate the observation of bubbles, the negative pressure water ball 5 is made of transparent plastic. The bottom of the negative pressure water ball 5 is provided with a connecting terminal 56 connected thereto, and a gas-liquid unidirectional film for preventing liquid backflow is provided in the connecting terminal 56. The specific gas-liquid unidirectional film can adopt an existing waterproof and breathable film, such as a PTFE waterproof and breathable film; an adapter is provided at the end of the hose 4, and the adapter is connected to the connecting terminal 56.

[0038] The detection assembly in this embodiment also includes a transparent outer shell 6, which can be in a spherical, square or triangular pyramidal shape. A certain amount of water is filled in the outer shell 6, and the negative pressure water ball 5 floats in the chamber of the outer shell 6, and a load-bearing part 51 is provided on the lower surface of the negative pressure water ball 5, so that the bottom of the negative pressure water ball 5 is heavier, so as to ensure that the connecting end 56 is always facing downward, thereby ensuring that the gas enters from the bottom of the negative pressure water ball 5, which is convenient for observing bubbles; a telescopic tube 52 is connected to the connecting end 56, and the telescopic tube 52 passes through the outer shell 6 and is connected to the adapter; specifically, the telescopic tube 52 can be a corrugated hose to ensure that the negative pressure water ball 5 can rotate freely in the chamber of the outer shell 6, and a connecting end 56 is also provided on the side wall of the outer shell 6, and the connecting end 56 is used to close the outer shell 6, and its end located in the outer shell 6 is connected to the corrugated hose, and a connecting pipe 61 connected to the corrugated hose is provided at the outer end of the outer shell 6, and the connecting pipe 61 is tension-tightly connected to the adapter, which is convenient for removing the detection assembly from the adapter.

[0039] A transparent protective tube 7 is also provided at the tail end of the needle seat 13. An internal thread is provided at one end of the protective tube 7 close to the needle seat 13, and an external thread is provided on the outer wall of the needle seat 13. The protective tube 7 is threadedly connected to the needle seat 13; a rubber plug 70 is provided in the protective tube 7, and an end cover 71 is provided at the end of the protective tube 7. The end cover 71 is detachably connected to the protective tube 7. Specifically, the end cover 71 is tightened in the protective tube 7, and the end cover 71 is pulled out when the needle is withdrawn; when the needle is not withdrawn, the steel needle 11 passes through the end cover 71, the rubber plug 70 and the isolation plug 131 in sequence, and the steel needle 11 is fixedly connected to the end cover 71 and slidably connected to the rubber plug 70; a handle 72 is also provided on the side wall of the end cover 71. When withdrawing the needle, pinch the handle 72 and push backward to make the end cover 71 withdraw from the end of the protective tube 7, and the steel needle 11 will be withdrawn accordingly. When the needle tip is located in the rubber plug 70, hold the protective tube 7 and rotate it to separate the protective tube 7 from the needle seat 13. By providing the protective tube 7 and the rubber plug 70, the needle tip can be shielded to avoid needle stick injuries caused by the steel needle 11 being placed randomly after being pulled out. Especially in emergency treatment, the steel needle 11 may be placed aside casually after being pulled out, which may easily injure others.

[0040] The head end of the needle seat 13 is also provided with a negative pressure airbag 8, which is vacuumed before being packaged and shipped out of the factory. Therefore, the negative pressure airbag 8 is initially in a compressed and tightened state and is attached to the head end of the needle seat 13, taking up little space and not affecting the normal puncture operation. The negative pressure airbag 8 is provided with an air guide tube 80 connected thereto, and an air intake one-way valve is provided in the air guide tube 80. The air guide tube 80 is arranged along the side wall of the needle seat 13 and is glued to the needle seat 13, and the free end of the air guide tube 80 is provided with a valve for sealing the air guide tube 80. The cap body 801 is fixedly connected to the protective tube 7. Specifically, the cap body 801 is made of brittle material. When the protective tube 7 rotates, the cap body 801 is twisted off and separated from the airway tube 80, so that the airway tube 80 is connected to the outside world. Air enters the negative pressure airbag 8 through the airway tube 80 to expand it. The expansion of the negative pressure airbag 8 compresses the puncture point. On the one hand, it can achieve compression to stop bleeding. On the other hand, it can fix the sleeve 12 to keep it upright, thereby preventing the sleeve 12 from swinging, slipping, or being compressed during the patient's transportation.

[0041] The specific implementation process is as follows: after determining the puncture point, insert the needle tip of the steel needle 11 into the body tissue from the puncture point, and open the closing clamp 41 to continue inserting the needle. During the insertion of the needle, the sleeve 12 enters the skin tissue together. When the steel needle 11 penetrates into the pleural cavity, under the action of negative pressure, the gas in the pleural cavity enters the negative pressure water ball 5 along the steel needle 11, the hose 4, and the connecting end 56. Obvious bubbles can be observed in the negative pressure water ball 5. At this time, stop inserting the needle to avoid the needle tip from piercing the lung tissue; then withdraw the steel needle 11, and pull it backward by pinching the handle 72 to make the end cover 71 withdraw from the end of the protective tube 7, and the steel needle 11 withdraws accordingly. When the needle tip is located in the rubber stopper 70, hold the protective tube 7 and rotate it to make The protective tube 7 is detached from the needle seat 13; in the process of rotating the protective tube 7, the cap body 801 is destroyed, the air guide tube 80 is connected to the outside, and air enters the negative pressure airbag 8 from the air inlet one-way valve. The negative pressure airbag 8 expands to fix the sleeve 12 and keep it upright; after withdrawing the steel needle 11, the isolation plug 131 seals the tail end of the needle seat 13, and the sleeve 12 is retained in the patient's body. The sleeve 12 is connected to the indwelling tube 2, and the patient's spontaneous breathing movement is used to squeeze out the remaining gas in the pleural cavity. Since the free end of the indwelling tube 2 is provided with a one-way valve 3, the outside air can be prevented from being inhaled into the body during breathing; after completing the above operations, the patient is quickly sent to the hospital for etiology investigation and subsequent treatment.

[0042] Embodiment 2

[0043] The difference between this embodiment and the first embodiment is that Figure 3 As shown, the negative pressure airbag 8 is detachably arranged at the head end of the needle seat 13 through the bottom plate 83. Specifically, the bottom plate 83 is a rubber soft plate, the bottom of the negative pressure airbag 8 is fixed to the bottom plate 83 by heat pressing, and the bottom plate 83 is bonded or clamped to the front end of the needle seat 13; when the bottom plate 83 is clamped to the needle seat 13, the following method can be used: a side of the bottom plate 83 that contacts the needle seat 13 is provided with a plurality of clamping holes 831, and a plurality of clamping blocks that match the clamping holes 831 are provided on the needle seat 13, and the clamping blocks are tension-tightly connected to the clamping holes 831; and the bottom plate 83 can be unfolded, and after unfolding, it is fan-shaped, and the specific structure is as follows Figure 4 The negative pressure airbag 8 is detachably arranged on the needle seat 13, which is convenient for removing the negative pressure airbag 8 and cleaning and disinfecting the puncture point, ensuring that the puncture point is clean and sterile to avoid wound infection.

[0044] Embodiment 3

[0045] The difference between this embodiment and the second embodiment is that Figure 5 As shown, the side of the negative pressure airbag 8 in contact with the patient's skin is provided with an adhesive dressing layer. Specifically, the surface close to the sleeve 12 is provided with a dressing 81, and the surface away from the sleeve 12 is provided with a transparent sterile tape 82. The surfaces of the dressing 81 and the sterile tape 82 are provided with release paper.

[0046] The adhesive dressing layer can be used during first aid, for example: before the negative pressure airbag 8 begins to expand, the release paper on its surface is torn off, and the negative pressure airbag 8 expands and contacts the skin, so that the sterile tape 82 is attached to the patient's skin to prevent the sleeve 12 from being pulled out when the negative pressure airbag 8 swings, and the fixation is more stable and reliable; and the set dressing 81 can further absorb exudate, stop bleeding, seal the puncture point, and avoid wound infection.

[0047] Embodiment 4

[0048] The difference between this embodiment and the third embodiment is that the adhesive dressing layer on the negative pressure airbag 8 is used after the patient is sent to the hospital for medical treatment, and an adhesive layer and a release paper can also be provided on the side of the bottom plate 83 of the negative pressure airbag 8 close to the needle seat 13, and one side of the bottom plate 83 is fixed on the needle seat 13; when in use, the other side of the bottom plate 83 is removed from the needle seat 13, and the bottom plate 83 is unfolded at this time, which is convenient for disinfecting and cleaning the puncture point. After cleaning, the release paper on the bottom plate 83 is torn off, and the bottom plate 83 is glued to the needle seat 13, and then the release paper on the surface of the negative pressure airbag 8 is torn off, so that the dressing 81 is attached around the puncture point, and the negative pressure airbag 8 is attached to the patient's skin with a sterile tape 82. After the patient's indwelling drainage treatment is completed, the cannula 12, the indwelling tube 2, and the negative pressure airbag 8 are removed from the patient as a whole.

[0049] Embodiment 5

[0050] The difference between this embodiment and the first embodiment is that Figure 6 As shown, it also includes a syringe barrel 9, which is tension-connected with the adapter; the device can be used in emergency scenarios such as pneumothorax and hemothorax. After the puncture is completed, if there is blood or fluid accumulation in the patient's chest cavity, the syringe barrel 9 can be connected to the adapter on the hose 4 to extract the accumulated fluid or blood.

[0051] The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. An emergency puncture needle, characterized in that: The invention comprises a puncture needle and a retention tube connected therewith, wherein the puncture needle comprises a steel needle, a sleeve and a needle seat, an isolation plug is arranged in the needle seat, one end of the sleeve is connected with the needle seat, the steel needle penetrates into the isolation plug from the tail end of the needle seat and passes out from the sleeve, the retention tube is connected with the needle seat, and a one-way valve is arranged at the free end of the retention tube; the end of the steel needle is connected with a detection component through a hose, a closed-end clamp is arranged on the hose, the detection component comprises a negative pressure water ball, a connecting end is arranged at the bottom of the negative pressure water ball, a gas-liquid one-way film for preventing liquid backflow is arranged in the connecting end, an adapter is arranged at the end of the hose, and the adapter is connected with the connecting end; the detection component also comprises a transparent outer shell, the negative pressure water ball floats in the chamber of the outer shell, and a load-bearing part is arranged on the lower surface of the negative pressure water ball, a telescopic tube is arranged at the connecting end, and the telescopic tube passes through the outer shell and is connected with the adapter.

2. An emergency puncture needle according to claim 1, characterized in that: A transparent protective tube is also provided at the tail end of the needle seat, and the protective tube is threadedly connected to the needle seat. A rubber plug is provided in the protective tube, and an end cover is provided at the end of the protective tube. The end cover is detachably connected to the protective tube, and the steel needle passes through the end cover, the rubber plug and the isolation plug in sequence. The steel needle is fixedly connected to the end cover and slidably connected to the rubber plug; a handle is also provided on the side wall of the end cover.

3. An emergency puncture needle according to claim 2, characterized in that: A negative pressure airbag is also provided at the head end of the needle seat, an air guide tube connected to the negative pressure airbag is provided on the negative pressure airbag, an air intake one-way valve is provided in the air guide tube, the air guide tube is provided along the side wall of the needle seat, and a cap body for sealing the air guide tube is provided at the free end of the air guide tube, the cap body is fixedly connected to the protective tube, and when the protective tube rotates, the cap body is separated from the air guide tube to connect the air guide tube with the outside.

4. The emergency puncture needle according to claim 3, characterized in that: The side of the negative pressure airbag in contact with the patient's skin is provided with an adhesive dressing layer, which includes a dressing and a sterile tape. The dressing is provided on the surface of the negative pressure airbag close to the sleeve, and the sterile tape is provided on the surface of the negative pressure airbag away from the sleeve. Release paper is provided on the surfaces of the dressing and the sterile tape.

5. The emergency puncture needle according to claim 4, characterized in that: The negative pressure air bag is detachably arranged at the head end of the needle seat through the bottom plate.

6. The emergency puncture needle according to claim 5, characterized in that: The end of the indwelling tube is also provided with an adapter, and the one-way valve is connected to the adapter.

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