A thoracentesis device for emergency use in tension pneumothorax
By using a combination of a return spring and a blunt needle core in the tension pneumothoracic emergency use chest puncture device, the problem of puncture needle tip damages the lung tissue is solved, and the operation safety and processing ability are improved through the design of the duckbill check valve and liquid extraction port.
Patent Information
- Application Number
- CN202420629205.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-29
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-03-29
AI Technical Summary
In the prior art, when dealing with tension pneumothorax, the tip of the puncture needle is prone to damage lung tissue, resulting in complications, such as lung bleeding or pneumothorax recurrence, and medical staff are prone to accidental injuries when taking puncture devices.
A tension pneumothorax emergency use chest puncture device is designed, using a combination of a return spring and a blunt needle core. The needle tip of the puncture needle has a retractable blunt head to avoid accidental injury, and the blunt head automatically extends out after the puncture to protect lung tissue. At the same time, a duckbill check valve and liquid extraction port are installed on the catheter to ensure airtightness and liquid accumulation treatment.
It effectively avoids the risk of puncture needle tip damage to lung tissue, reduces the occurrence of complications, improves the safety of operation, and provides the function of treating effusion and through-tubes.
Smart Images
Figure CN222693489U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of medical devices, and particularly relates to a thoracentesis device for emergency use in tension pneumothorax. Background Art
[0002] Nowadays, for patients with pneumothorax, especially tension pneumothorax, caused by chest injuries due to trauma or car accidents, emergency chest puncture and exhaust are usually performed using a simple puncture device with a thick needle and a rubber fingertip. However, when using this traditional puncture device for chest puncture and exhaust, medical staff are prone to touching the needle tip of the puncture needle with their hands when taking the puncture device, resulting in accidental injury. After puncturing the chest cavity, the needle tip of the puncture needle is prone to damage lung tissue, which may lead to further complications, such as pulmonary hemorrhage or recurrence of pneumothorax, which may have an adverse effect on the patient's condition.
[0003] Therefore, we propose a thoracentesis device for emergency use in tension pneumothorax to solve the above problems. Utility Model Content
[0004] The utility model aims to solve the above problems and proposes a thoracentesis device for emergency use in tension pneumothorax.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A thoracentesis device for emergency use in tension pneumothorax comprises a puncture needle, the upper end of the puncture needle is fixedly connected to a catheter, the catheter is provided with an exhaust port and a liquid extraction port, a rotary ventilation valve is installed on the catheter, and a check valve is installed in the catheter, the check valve is located on the upper side of the rotary ventilation valve, a blunt needle core is slidably connected in the puncture needle, the upper end of the blunt needle core extends to be arranged in the catheter, a raised wall corresponding to the blunt needle core is arranged in the catheter, and the raised wall is fixedly connected to the upper end extension wall of the blunt needle core by a reset spring, the blunt head of the lower end of the blunt needle core protrudes from the puncture needle, and the blunt head of the blunt needle core will automatically retract into the tube body of the puncture needle when encountering resistance during puncture.
[0007] Preferably, the puncture needle is provided with a position indicating cap, and the position indicating cap is made of silicone material.
[0008] Preferably, the blunt-tip needle core is designed as a hollow structure, the lower end of the blunt-tip needle core is designed as an elliptical shape, and a vent hole is opened at the lower end of the blunt-tip needle core.
[0009] Preferably, the check valve is of duckbill design, and the check valve body is made of silicone material.
[0010] Preferably, the exhaust port and the liquid extraction port are both threadedly connected with nuts.
[0011] Preferably, the puncture needle is provided with scale lines matching with the position indicating cap.
[0012] Compared with the prior art, the beneficial effects of the utility model are:
[0013] 1. Through the cooperation of the reset spring and the blunt needle core, the needle tip of the puncture needle has a retractable blunt head, so that when medical staff take the puncture needle, it is not easy to touch the needle tip of the puncture needle to cause accidental injury. After the puncture needle is inserted into the chest cavity, the blunt end of the blunt needle core can be automatically extended under the action of the reset spring to prevent the needle tip of the puncture needle from damaging the re-expanded lung tissue.
[0014] 2. The duckbill check valve can be set to allow the gas to be discharged in one direction toward the exhaust port, avoiding the backflow of atmosphere caused by the negative pressure in the chest cavity being less than the atmospheric pressure when the gas in the chest cavity is sucked out by the negative pressure aspirator, thereby effectively ensuring the airtightness of the puncture instrument.
[0015] 3. Through the set extraction port, when combined hemothorax occurs, the extraction port can be connected to a syringe to extract the pleural effusion, and when the vent hole of the blunt needle core is blocked, physiological saline can be flushed into the extraction port to clear the tube. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a front perspective structural schematic diagram of a thoracentesis device for emergency use in tension pneumothorax proposed by the utility model;
[0017] Figure 2 for Figure 1 A schematic diagram of the enlarged structure at A in the middle;
[0018] Figure 3 for Figure 1 Schematic diagram of the enlarged structure at point B in the middle.
[0019] In the figure: 1 puncture needle, 2 catheter, 3 exhaust port, 4 liquid extraction port, 5 rotary vent valve, 6 check valve, 7 blunt needle core, 8 raised wall, 9 return spring, 10 position indicator cap, 11 vent hole, 12 nut, 13 scale line. DETAILED DESCRIPTION
[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0021] Reference Figure 1-Figure 3A thoracentesis device for emergency use in tension pneumothorax includes a puncture needle 1, a position indicating cap 10 is sleeved on the puncture needle 1, and the position indicating cap 10 is made of silicone material. The setting of the position indicating cap 10 is convenient for medical staff to limit the puncture depth of the puncture needle 1 according to needs, and the position indicating cap 10 made of silicone material has good adhesion between the position indicating cap 10 and the puncture needle 1, so that the position indicating cap 10 will not slide randomly when not in use, and the puncture needle 1 is provided with a scale line 13 matched with the position indicating cap 10, and the setting of the scale line 13 is convenient for medical staff to better locate the limit position of the position indicating cap 10;
[0022] The upper end of the puncture needle 1 is fixedly connected with a catheter 2, and an exhaust port 3 and a liquid extraction port 4 are provided on the catheter 2. The exhaust port 3 and the liquid extraction port 4 are both threadedly connected with a nut 12. The setting of the nut 12 can seal the exhaust port 3 and the liquid extraction port 4 when they are not in use;
[0023] A rotary vent valve 5 is installed on the conduit 2, and a check valve 6 is installed in the conduit 2. The check valve 6 is located on the upper side of the rotary vent valve 5. The check valve 6 is a duckbill design, and the main body of the check valve 6 is made of silicone. The duckbill check valve 6 has the advantages of efficient check function, low pressure loss, and simple structure. The duckbill check valve 6 made of silicone can use its own good elasticity to ensure the closing performance and sealing performance of the valve mouth flap;
[0024] A blunt needle core 7 is slidably connected to the puncture needle 1, and the upper end of the blunt needle core 7 extends to be set in the catheter 2. A convex wall 8 corresponding to the blunt needle core 7 is set in the catheter 2, and the convex wall 8 is fixedly connected to the upper end extension wall of the blunt needle core 7 by a reset spring 9. The blunt head of the lower end of the blunt needle core 7 protrudes from the puncture needle 1, and the blunt head of the blunt needle core 7 will automatically retract into the tube body of the puncture needle 1 when encountering resistance during puncture. The blunt needle core 7 is designed as a hollow structure, and the lower end of the blunt needle core 7 is designed as an elliptical design, and a vent 11 is provided at the lower end of the blunt needle core 7. The hollow blunt needle core 7 is convenient for ventilation, and the lower end structural design of the blunt needle core 7 makes the blunt needle core 7 protruding from the end of the puncture needle 1 blunt and will not injure the user. After puncture, the blunt head of the blunt needle core 7 can separate the lung tissue from the needle tip of the puncture needle 1 to avoid damaging the lung tissue.
[0025] The operating principle of the utility model is now described as follows:
[0026] When performing thoracocentesis, the position indicating cap 10 is adjusted to a suitable position according to the thickness of the chest wall detected by B-ultrasound to limit the puncture length of the puncture needle 1. When the position indicating cap 10 slides, it can be positioned in conjunction with the scale line 13 on the puncture needle 1. Subsequently, the thoracocentesis can be performed through the puncture needle 1. During puncture, the blunt head of the blunt needle core 7 will automatically retract into the puncture needle 1 when it encounters resistance when it contacts the skin, and the corresponding needle tip of the puncture needle 1 will extend. Subsequently, the puncture needle 1 can be inserted into the thoracic cavity using the needle tip of the puncture needle 1. After the puncture needle 1 enters the thoracic cavity, the blunt needle core 7 will automatically retract into the puncture needle 1 when it encounters resistance when it contacts the skin, and the corresponding needle tip of the puncture needle 1 will extend. Subsequently, the puncture needle 1 can be inserted into the thoracic cavity using the needle tip of the puncture needle 1. The resistance to the blunt tip of the core 7 is reduced. At this time, the return spring 9 will release energy, so that the blunt tip of the blunt needle core 7 will automatically extend to prevent the needle tip of the puncture needle 1 from piercing the lung tissue. Then, the rotary vent valve 5 is rotated to make the upper and lower air guide holes of the rotary vent valve 5 consistent and keep it in the open state. Then, the nut 12 of the exhaust port 3 is unscrewed. At this time, the high-pressure gas in the chest cavity will be discharged from the bottom vent hole of the blunt needle core 7, the upper opening of the blunt needle core 7, the check valve 6 to the exhaust port 3 in one direction to relieve the pressure in the lungs and restore normal breathing.
[0027] When pleural effusion or the vent 11 of the blunt needle core 7 is blocked after puncture and the tube needs to be flushed, the rotary vent valve 5 is turned to close the rotary vent valve 5. Then, the nut 12 of the liquid extraction port 4 is unscrewed, and the liquid extraction port 4 is connected to the syringe. The syringe is used in conjunction with the liquid extraction port 4 to extract liquid or flush in physiological saline to clear the tube.
[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A thoracentesis device for emergency use in tension pneumothorax, comprising a puncture needle (1), characterized in that: The upper end of the puncture needle (1) is fixedly connected to a catheter (2), and the catheter (2) is provided with an exhaust port (3) and a liquid extraction port (4). A rotary vent valve (5) is installed on the catheter (2), and a check valve (6) is installed in the catheter (2). The check valve (6) is located on the upper side of the rotary vent valve (5). A blunt needle core (7) is slidably connected to the puncture needle (1). The upper end of the blunt needle core (7) extends into the catheter (2). A raised wall (8) corresponding to the blunt needle core (7) is provided in the catheter (2), and the raised wall (8) is fixedly connected to the upper end extension wall of the blunt needle core (7) via a reset spring (9). The blunt head of the lower end of the blunt needle core (7) protrudes from the puncture needle (1), and the blunt head of the blunt needle core (7) automatically retracts into the tube body of the puncture needle (1) when encountering resistance during puncture.
2. A thoracentesis device for emergency use in tension pneumothorax according to claim 1, characterized in that: The puncture needle (1) is sleeved with a position indicating cap (10), and the position indicating cap (10) is made of silica gel.
3. A thoracentesis device for emergency use in tension pneumothorax according to claim 1, characterized in that: The blunt-tip needle core (7) is designed as a hollow structure, the lower end of the blunt-tip needle core (7) is designed as an ellipse, and a vent hole (11) is opened at the lower end of the blunt-tip needle core (7).
4. A thoracentesis device for emergency use in tension pneumothorax according to claim 1, characterized in that: The check valve (6) is of duckbill design, and the main body of the check valve (6) is made of silicone material.
5. A thoracentesis device for emergency use in tension pneumothorax according to claim 1, characterized in that: The exhaust port (3) and the liquid extraction port (4) are both threadedly connected with nuts (12).
6. A thoracentesis device for emergency use in tension pneumothorax according to claim 2, characterized in that: The puncture needle (1) is provided with a scale mark (13) which matches the position indicating cap (10).