Anti-injury thoracentesis and drainage integrated needle
By introducing components such as positioning patches and locking devices, as well as new materials, into the thoracentesis needle, the problems of inaccurate puncture depth control, unstable fixation, and secondary injury have been solved, achieving precise, safe, and comfortable chest drainage operation.
Patent Information
- Application Number
- CN202511836900.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-08
- Publication Date
- 2026-02-13
AI Technical Summary
Traditional thoracentesis needles have problems such as difficulty in accurately controlling the puncture depth, unstable fixation and positioning, high risk of secondary needle injury, and unsafe operation process.
By employing components such as positioning pads, locking parts, extension tubes, connectors, and gripping plates, combined with a novel ultra-soft polymer and gallium metal composite material, it achieves precise control of puncture depth, stable fixation, gentle operation, and automatic damage prevention.
It improves the safety and comfort of puncture procedures, ensures smooth and leak-free drainage, reduces the risk of tissue damage, and enhances the controllability and biosafety of clinical treatment.
Smart Images
Figure CN121512643A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application belongs to the technical field of medical devices, and particularly relates to an anti-injury chest puncture and drainage integrated needle. BACKGROUND
[0002] In the clinical treatment of pleural effusion or gas drainage, a chest puncture and drainage needle is a commonly used puncture and drainage instrument. A conventional chest puncture needle is usually composed of a metal needle tube, a needle core, a connecting tube and the like. During operation, a medical staff directly holds the puncture needle, punctures into the chest cavity after positioning on the body surface, and establishes a drainage channel. The chest puncture needle of the prior art has a simple structure and high drainage efficiency, but still has some technical defects in clinical use. The puncture depth is difficult to accurately control. Since the chest wall thickness and patient individual differences are large, the medical staff usually relies on hand feeling to judge the insertion depth during puncture, and the problems of over-deep or over-shallow puncture are prone to occur. If the needle body is inserted too deeply, lung tissue or blood vessels are easily punctured, and serious complications are caused. If the insertion is insufficient, the drainage channel cannot be effectively established, and the effusion or gas is not easily discharged.
[0003] The fixation and positioning after puncture are unstable. Some chest puncture needles are not equipped with reliable limiting structures or positioning stickers. After puncture is completed, the needle tube is prone to shift or loosen on the body surface of the patient, causing changes in the drainage path or air or liquid leakage, and affecting the drainage effect.
[0004] The risk of secondary injury of the needle head is high. The conventional metal needle tube still maintains a high hardness state after puncture. When the patient breathes or changes the body position, the needle tip may rub against the pleura or lung surface, causing tissue scratches or secondary puncture. Such mechanical injury not only increases the pain of the patient, but also easily causes complications such as infection and pneumothorax.
[0005] The safety and comfort of the operation process need to be improved. Since the conventional needle body lacks a flexible buffer structure, the impact on the tissue during puncture is large. If the operator does not properly control the force, tissue damage is easily caused. At the same time, the hand-held part has poor anti-slip performance, which also increases the operation risk. SUMMARY
[0006] In view of the problems in the prior art, the purpose of the present application is to provide an anti-injury chest puncture and drainage integrated needle which can accurately limit the depth during puncture, automatically soften after operation to prevent injury, and has the function of stable drainage, so as to improve the clinical safety and comfort of chest puncture and drainage treatment.
[0007] To achieve the above-mentioned purpose, the present application provides the following technical scheme: An anti-injury chest puncture and drainage integrated needle comprises a needle tube, and a positioning sticker is sleeved on the needle tube. During use, the positioning sticker is pasted on the skin. The needle tube is clamped with a clamping part, which is used for limiting the insertion depth of the needle tube. The top of the needle tube is inserted with an extension tube. The extension tube comprises a plug-in head connected with the needle tube, and a pinch plate connected with the plug-in head. When performing the puncture operation, the pinch plate needs to be pinched by hand. The top of the plug-in head is connected with a drainage tube.
[0008] Further, the bottom of the needle tube is provided with a needle tip, and the needle tube is provided with drainage holes around its axis at equal intervals.
[0009] Further, the needle tube is provided with a limiting groove along its length direction at equal intervals. The clamping part is clamped in the limiting groove.
[0010] Further, the clamping part is provided with an extension rod at both ends, and the extension rod is provided with a bent head at one end. When installing the clamping part, the bent head needs to be pinched by hand and pried open outward.
[0011] Further, the bottom of the positioning sticker is provided with a sticky layer, and the top of the positioning sticker is provided with a through tube. The needle tube penetrates the through tube, and the clamping part abuts against the top of the through tube.
[0012] Further, the plug-in head is provided with a positioning ring, and the number of the positioning ring is two. One end of the pinch plate is provided with a thimble, and the thimble is provided with an opening. The thimble is located between the two positioning rings. The pinch plate is provided with convex particles on both sides.
[0013] Further, the top of the plug-in head is provided with a base, the base is provided with a spring, and the spring; The other end of the drainage tube is provided with a second connecting head.
[0014] Further, the top of the needle tube is provided with a first connecting head, and the outer side of the first connecting head is provided with an anti-skid groove. The first connecting head is connected with the plug-in head.
[0015] Further, the needle tube is made of a new type of ultra-soft polymer and metal gallium. The metal gallium has the characteristics of low melting point in solid-liquid phase change. The needle tube is in solid state at room temperature and maintains sufficient hardness to pierce the skin, realizing normal puncture operation.
[0016] Further, the needle tube is affected by body temperature after being inserted into the body, and the metal gallium part irreversibly softens within 60 seconds, so that the needle tip loses the original rigidity after phase change, thereby effectively avoiding secondary injury caused by sharp needle after puncture is completed.
[0017] Compared with the prior art, the present application has the following advantages: The present application can effectively solve the problem of difficult accurate control of insertion depth of traditional chest puncture drainage device during puncture process by setting positioning stickers, clamping parts and limiting grooves in the needle tube structure. The positioning stickers have a medical low-sensitization adhesive layer, which can be attached to the skin surface to form a stable reference plane before puncture. After the needle tube penetrates through the top of the positioning sticker, the clamping parts arranged thereon can be clamped in stages along the limiting grooves, so as to accurately control the insertion depth of the needle body, thereby preventing tissue damage caused by excessive puncture or poor drainage caused by insufficient puncture, and improving the safety and controllability of puncture operation.
[0018] The present application can effectively solve the problem of unstable fixation and positioning and inconvenient operation of the existing chest puncture needle during use by setting an extension tube, a plug-in head and a pinch plate and other components on the top of the needle tube. The convex particles uniformly distributed on the pinch plate provide anti-slip support during operation to ensure stable holding by the operator. The positioning ring and sleeve ring structure arranged on the plug-in head limit the position of the pinch plate to prevent slipping caused by operation shaking. At the same time, the extension tube is connected with a drainage tube and a second connecting head at the top, which can realize rapid drainage and reliable sealing after puncture, ensuring smooth and leakage-free drainage process.
[0019] The present application can effectively solve the problem of tissue damage caused by lack of buffer during puncture process of traditional chest puncture device by setting a base and spring structure on the plug-in head. The spring produces axial elastic deformation when the needle body advances, which can absorb part of the puncture thrust, thereby reducing the impact on the tissue. This structure improves the tissue protection while maintaining the puncture accuracy, making the chest puncture process more gentle and reducing the risk of bleeding and pain.
[0020] The present application uses a new type of ultra-soft polymer and metal gallium composite material in the manufacture of the needle tube, which effectively solves the problem of secondary injury caused by continuous high hardness of traditional metal chest puncture needle after puncture. Metal gallium has a low melting point characteristic of solid-liquid phase change. The needle tube is in solid state at room temperature and has sufficient hardness to complete puncture. When the needle body is inserted into the body and affected by body temperature, the metal gallium irreversibly softens within about 60 seconds, so that the needle tip loses the original rigidity, preventing the patient from causing scratches to the tissue when breathing or changing body position. This material has self-adaptive softening characteristics while realizing puncture function, which significantly improves the biological safety and patient comfort of chest puncture drainage treatment. BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1 The present application is a structural schematic diagram; Figure 2This is a schematic diagram of the structure of the needle tube of the present invention; Figure 3 This is a schematic diagram of the positioning sticker of the present invention. Figure 1 ; Figure 4 This is a schematic diagram of the positioning sticker of the present invention. Figure 2 ; Figure 5 This is a schematic diagram of the structure of the locking component of the present invention; Figure 6 This is a schematic diagram of the extension tube of the present invention; Figure 7 This is a schematic diagram of the structure of the gripping plate of the present invention.
[0022] The attached diagram lists the components represented by each number as follows: 1. Needle tube; 11. Needle tip; 12. Drain hole; 13. Limiting groove; 14. First connector; 141. Anti-slip groove; 2. Positioning sticker; 21. Pipe opening; 22. Adhesive layer; 3. Locking component; 31. Extension rod; 311. Bending head; 4. Extension tube; 41. Connector; 411. Positioning ring; 412. Base; 42. Drain tube; 421. Second connector; 43. Spring; 5. Grip plate; 51. Protrusion; 52. Collar; 521. Opening. Detailed Implementation
[0023] To make the objectives and advantages of this invention clearer, the invention will be specifically described below with reference to embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of the invention and does not strictly limit the scope of protection specifically claimed by the invention.
[0024] See Figures 1-7A novel anti-damage thoracentesis drainage needle includes a needle tube 1 with a positioning patch 2 fitted onto it. Existing thoracentesis devices often suffer from problems during clinical use due to inaccurate control of needle insertion depth, leading to thoracentesis that is too deep or too shallow, or even punctures lung tissue. To address this, this design utilizes the positioning patch 2 for auxiliary positioning. The positioning patch 2 is applied to the patient's skin before the puncture procedure, providing a fixed fulcrum for the needle tube 1. After the positioning patch 2 is fitted onto the needle tube 1, it stabilizes the needle and prevents tilting during the procedure. During use, the positioning patch 2 is adhered to the skin, and its position can be adjusted according to the patient's chest wall thickness to ensure accurate puncture point placement. A retaining clip is also present on the needle tube 1. Positioning element 3 and locking element 3 are used to limit the insertion depth of needle tube 1, thereby preventing excessive puncture depth from causing internal injury; an extension tube 4 is inserted into the top of needle tube 1, and the extension tube 4 achieves a sealed connection with the drainage system; the extension tube 4 includes a connector 41 connected to needle tube 1, and a pinch plate 5 is connected to the connector 41, which provides a stable grip area for the operator; when performing puncture, the pinch plate 5 needs to be pinched by hand, and the protrusions 51 on the pinch plate 5 are used to prevent slippage; the top of the connector 41 is connected to a drainage tube 42, and the other end of the drainage tube 42 is connected to the drainage device to achieve continuous drainage of pleural effusion and ensure the stability and safety of the drainage process.
[0025] See Figures 1-2 The needle tube 1 has a needle tip 11 at its bottom, which is used to penetrate the chest wall and enter the pleural cavity. Traditional metal needle tips are too hard and can easily cause tissue scratches. This structure reduces this risk through the design of new materials. Drainage holes 12 are evenly spaced around the axis of the needle tube 1. The drainage holes 12 can achieve uniform drainage of pleural effusion or gas, avoiding the problems of blockage and excessive local pressure caused by single-hole drainage. The arrangement of drainage holes 12 optimizes the drainage channel, allowing body fluid to be drained from multiple points, shortening the emptying time and improving drainage efficiency. After successful puncture, this structure can establish a stable fluid flow path, providing a safety guarantee for clinical operation.
[0026] See Figures 1-2 The needle tube 1 has equal-spaced limiting grooves 13 along its length. The limiting grooves 13 are used to achieve multi-level depth adjustment to adapt to the differences in chest wall thickness among different patients. Traditional puncture operations often lack effective depth limiting devices, which can easily lead to mispuncture or missed puncture. This structure achieves graded depth control by setting limiting grooves 13 and engaging the locking member 3 within the limiting grooves 13. The locking member 3 can move between different positions of the limiting grooves 13. The operator selects the appropriate depth locking position according to the patient's body shape to ensure accurate and controllable puncture depth, fundamentally solving the problem of relying on experience to judge puncture depth.
[0027] See Figures 1-5Both ends of the locking component 3 are provided with extension rods 31, and one end of the extension rod 31 is provided with a bending head 311. The bending head 311 is used to assist the operator in quickly opening or fixing the locking component 3. Existing thoracentesis needles often require additional tools when adjusting the depth, which is not convenient for operation in a sterile environment. This structure uses the mechanical lever action of the bending head 311 to allow the locking component 3 to be opened or locked in a hand-squeezed state, thereby improving the convenience of adjustment. When installing the locking component 3, the bending head 311 needs to be squeezed by hand and opened outward. After releasing, the locking component 3 will automatically spring back and lock into the limiting groove 13, ensuring that the needle body is stable and reliable during puncture.
[0028] See Figures 1-4 The bottom of the positioning patch 2 is provided with an adhesive layer 22, which is a medical-grade hypoallergenic adhesive material to ensure long-term adhesion to the patient's skin without irritating the skin. The top of the positioning patch 2 is provided with a tube 21, the inner diameter of which matches the outer diameter of the needle tube 1 to ensure that the needle tube 1 does not shake when passing through the tube 21. After the needle tube 1 passes through the tube 21, its locking member 3 abuts against the top of the tube 21, thereby forming an effective vertical support relationship and preventing the needle tube 1 from deviating during puncture. This structure can help the operator stabilize the needle direction during puncture, reduce the risk of accidental puncture caused by angular deviation, and thus improve the accuracy and safety of operation.
[0029] See Figures 1-7 The connector 41 is provided with two positioning rings 411. The two positioning rings 411 are used to limit the axial position of the collar 52 and prevent the pinch plate 5 from loosening or detaching. One end of the pinch plate 5 is provided with a collar 52, and the collar 52 has an opening 521. The collar 52 can be quickly installed and removed from the connector 41 through the opening 521 to form a reliable sliding fit. The collar 52 is located between the two positioning rings 411 and can achieve stable positioning. Both sides of the pinch plate 5 are provided with protrusions 51, which increase the surface friction and improve the operator's grip stability during operation. Through this structural design, the hand control during the thoracentesis operation is more precise, the needle body is prevented from shaking, and the safety factor of the puncture operation is improved.
[0030] See Figure 6The top of the connector 41 is provided with a base 412, and a spring 43 is fitted on the base 412. The spring 43 is used to form an elastic buffer during the puncture and advancement process. Due to the lack of a buffer structure in the existing thoracentesis needle operation, tissue contusion is easily caused by uneven force applied by the operator. In this structure, the combination of the base 412 and the spring 43 allows the spring 43 to absorb part of the axial force when the needle tube 1 is pushed into the pleural cavity, reducing the impact force at the moment of puncture. The drainage tube 42 is installed on the top of the connector 41. Its interior is a hollow structure, which can ensure the smooth drainage of pleural effusion. The other end of the drainage tube 42 is provided with a second connector 421. The second connector 421 can be connected to a negative pressure suction tube or a medical drainage bag to form a closed drainage circuit, prevent air backflow and cross-infection, and improve the safety of drainage.
[0031] See Figure 7 The needle tube 1 is provided with a first connector 14 at the top, and the outer side of the first connector 14 is provided with an anti-slip groove 141. The anti-slip groove 141 can enhance the friction during connection and prevent slippage when tightening. The first connector 14 is connected to the plug 41 to form a sealed transition structure to prevent liquid leakage. This connection method makes the needle tube 1 and the extension tube 4 detachable and secure, which is convenient for postoperative cleaning and replacement, while maintaining high sealing performance to ensure the stability and safety of the chest drainage process.
[0032] See Figures 1-7 The needle tube 1 is made of a novel ultra-soft polymer and gallium composite. Traditional metal needles maintain a high degree of hardness after puncture, which can easily cause secondary scratches if the patient breathes or moves. Gallium has a low melting point due to solid-liquid phase transition, so the needle tube 1 is solid at room temperature and maintains sufficient hardness to puncture the skin, enabling normal puncture operation. This composite material structure combines the low melting point of gallium with the flexibility of polymers, allowing the needle tube 1 to meet the puncture rigidity requirements while also achieving adaptive softening under body temperature. This material property effectively improves the biosafety and human adaptability of the thoracentesis needle.
[0033] See Figures 1-7 After insertion into the body, the gallium portion of the needle 1 undergoes irreversible softening within 60 seconds due to body temperature. After the phase transition, the needle tip 11 loses its original rigidity, thus effectively avoiding secondary damage caused by the sharp needle after puncture. When the patient's chest cavity temperature continues to act on the needle 1, the gallium structure gradually softens, significantly reducing the mechanical strength of the needle tip 11. At this time, even if the patient's position changes or the chest cavity pressure fluctuates, the needle tip 11 will not cause scratches to the pleura or lung surface. This design, combined with the body temperature triggering mechanism, actively prevents tissue damage and solves the clinical risks caused by the uncontrollable hardness of traditional thoracentesis needles, thereby significantly improving the safety and comfort of thoracentesis drainage treatment. Example
[0034] See Figures 1-7A type of anti-damage thoracentesis drainage integrated needle includes a needle tube 1, a positioning patch 2, a locking component 3, an extension tube 4, a connector 41, a pinch plate 5, a drainage tube 42, and internal auxiliary structures. The needle tube 1 is made entirely of a novel ultra-soft polymer and gallium metal composite material. The needle tube 1 has a support cavity 15 inside, which provides internal support force before the gallium metal softens during phase transition. The inner wall of the support cavity 15 is lined with a flexible polymer support layer 151. When the needle tube 1 is in a solid state, this support layer and the gallium metal form a composite hardness support, ensuring that the needle body has sufficient axial rigidity during puncture. In the needle tip 11 region, the support layer 151 gradually thins to form a guiding soft area, so that the needle tip 11 can flexibly transition when contacting tissue, reducing puncture resistance.
[0035] During the actual operation, the operator first removes the positioning patch 2 and peels off the protective film, exposing the adhesive layer 22 at the bottom of the positioning patch 2; the positioning patch 2 is accurately pasted on the puncture positioning point on the patient's chest wall; the top of the positioning patch 2 is provided with a tube 21, the diameter of the tube 21 matches the outer diameter of the needle tube 1, ensuring that there is no shaking when the needle is inserted vertically; the needle tip 11 at the lower end of the needle tube 1 is placed directly below the tube 21, and when the needle tube 1 penetrates the tube 21, the locking member 3 abuts against the top of the tube 21 to form a mechanical limit.
[0036] Extension rods 31 extend from both ends of the locking component 3, and the ends of the extension rods 31 are provided with bent heads 311. The operator can pinch the bent heads 311 with their fingers to pry the locking component 3 outward, so that the locking component 3 temporarily disengages from the limiting groove 13. After adjusting to a suitable puncture depth, the operator releases the hand, and the locking component 3 re-locks into the limiting groove 13 under the action of elastic recovery force, thereby realizing depth adjustment. The limiting grooves 13 are evenly distributed along the length of the needle tube 1, and can achieve graded locking at different positions, which is convenient for fine adjustment according to the thickness of the patient's chest wall.
[0037] After the needle body structure is assembled, the operator holds both sides of the gripping plate 5 with both hands, using the protrusions 51 to increase friction and prevent slippage. One end of the gripping plate 5 is connected to the connector 41 via a collar 52, which is located between two positioning rings 411 and is detachably fixed through an opening 521. The connector 41 has a check seal ring 413 inside, which is made of medical-grade silicone to prevent leakage of liquid during backflow.
[0038] The operator slowly advances the needle tube 1 vertically, using the positioning patch 2 as a reference point. After the needle tip 11 pierces the skin, subcutaneous tissue, and pleura, it enters the pleural cavity. The drainage hole 12 on the needle tube 1 is connected to the pleural effusion, forming a drainage channel. At the same time, the base 412 at the top of the connector 41 provides support for the needle tube 1. The spring 43 on the base 412 absorbs part of the thrust at the moment of puncture, making the puncture process more stable and reducing tissue damage.
[0039] Once the needle tip 11 has fully entered the pleural cavity, the operator stops advancing the needle tube 1 and judges whether the puncture is in place by observing the flow of fluid in the drainage tube 42. The drainage tube 42 is connected to the negative pressure suction device through the second connector 421 to form a closed drainage circuit. Under the action of negative pressure, the pleural fluid enters the drainage tube 42 through the drainage hole 12 of the needle tube 1 and is then discharged into the collection bag to form a stable drainage.
[0040] About 60 seconds after the needle enters the pleural cavity, because the needle tube 1 is made of gallium composite material, the gallium begins to undergo a solid-liquid phase transition at body temperature (about 37°C). The gallium in the front part of the needle tube 1 softens first, causing the rigidity of the needle tip 11 to gradually decrease. After about 60 seconds, the needle tip 11 completely loses its original hardness and becomes soft. At this time, even if the patient causes relative movement of the pleural cavity due to breathing or changes in body position, the needle tip 11 will not scratch the pleura or lung surface, thus avoiding secondary damage.
[0041] To prevent the softening of the needle tube 1 from affecting the drainage stability, the middle section of the needle tube 1 is constrained by a reinforcing ring 152. The reinforcing ring 152 is made of high-molecular reinforcing fiber composite and is located above the limiting groove 13 of the needle tube 1. This structure ensures that the needle tube 1 can maintain its overall shape stability after the front end is softened, preventing the tube from bending or blocking during the drainage process. In addition, a first connector 14 with an anti-slip groove 141 is provided between the extension tube 4 and the plug connector 41 to ensure a stable seal when the connection is tightened, preventing liquid leakage and air from entering the chest cavity.
[0042] Through the above-mentioned structural combination, the entire device achieves controllable adjustment of puncture depth, elastic buffering of puncture force, unobstructed drainage process, and automatic softening of needle tip to prevent damage during operation. While maintaining the traditional thoracentesis drainage function, this solution solves the problems of difficult control of puncture depth, excessive puncture impact force, and secondary damage caused by needle tip hardness after surgery, making thoracentesis drainage operation safer, more accurate and humane, and has significant clinical application advantages.
[0043] The working principle of this invention is as follows: Before the puncture procedure, the operator first confirms that the needle tube 1, positioning patch 2, locking element 3, extension tube 4, and pinch plate 5 are installed completely. After peeling off the adhesive layer 22 of the positioning patch 2, it is attached to the skin surface of the patient's chest puncture area, so that the positioning patch 2 can play a role in fixing and positioning. The needle tube 1 passes through the tube 21 on the positioning patch 2, and the locking element 3 is placed against the top of the tube 21, thereby limiting the insertion depth of the needle tube 1.
[0044] During the puncture, the operator holds the gripping plate 5 with both hands, using the protrusions 51 on the gripping plate 5 to enhance friction and prevent slippage; by applying force, the needle tube 1 is slowly inserted subcutaneously along the axial direction. Once the needle tip 11 of the needle tube 1 penetrates the skin and enters the pleural cavity, the drainage hole 12 on the outer wall of the needle tube 1 connects with the fluid in the body cavity, forming a preliminary drainage channel. The locking component 3 achieves graded limiting by locking into the limiting groove 13 on the needle tube 1, making the insertion depth of the needle tube 1 controllable and preventing excessive puncture and tissue damage.
[0045] The extension tube 4 is connected to the first connector 14 at the top of the needle tube 1. The anti-slip groove 141 on the outer side of the first connector 14 facilitates tightening during installation. The bottom of the extension tube 4 is equipped with a connector 41, which has two positioning rings 411. A collar 52 is engaged between the two, allowing for quick assembly and disassembly through its opening 521. The top of the connector 41 is connected to a base 412, which is fitted with a spring 43. When the operator applies force, the spring 43 provides cushioning elasticity, preventing excessive pushing force from damaging the tissue. The drainage tube 42 extends outward from the connector 41, and its other end is equipped with a second connector 421, which can be connected to a drainage tube or a negative pressure suction device to achieve continuous drainage of pleural effusion or gas.
[0046] Once needle 1 is inserted into the body, its novel ultra-soft polymer and gallium composite structure begins to protect against damage. Due to its low melting point and solid-liquid phase transition properties, gallium allows needle 1 to remain solid and sufficiently hard at room temperature, facilitating the puncture procedure. However, once the needle tip 11 enters the body, the gallium softens irreversibly within approximately 60 seconds due to body temperature. After the phase transition, the tip of needle 1 gradually loses its original rigidity. At this point, the needle tip 11 becomes soft, preventing scratches or secondary punctures to surrounding tissues even if the patient moves or changes position, thus effectively improving the safety and comfort of the thoracentesis drainage process.
[0047] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention are implemented according to conventional methods in the art unless otherwise specified or limited.
Claims
1. A type of anti-trauma thoracentesis drainage integrated needle, characterized in that: Includes a needle tube (1), and a positioning sticker (2) is fitted on the needle tube (1); When using, the positioning sticker (2) is pasted onto the skin; The needle tube (1) is fitted with a locking component (3), which is used to limit the insertion depth of the needle tube (1); An extension tube (4) is inserted into the top of the needle (1). The extension tube (4) includes a connector (41) connected to the needle tube (1), and a pinch plate (5) is connected to the connector (41). When performing a puncture, the holding plate needs to be held by hand (5); The top of the connector (41) is connected to a drain pipe (42).
2. The anti-damage thoracentesis drainage integrated needle according to claim 1, characterized in that: The needle tube (1) is provided with a needle tip (11) at the bottom, and a drain hole (12) is provided through the needle tube (1) at equal intervals around its axis.
3. The anti-damage thoracentesis drainage integrated needle according to claim 1, characterized in that: Limiting grooves (13) are equally spaced along the length of the needle tube (1); The locking component (3) engages within the limiting groove (13).
4. The anti-damage thoracentesis drainage integrated needle according to claim 3, characterized in that: Both ends of the locking member (3) are provided with extension rods (31), and one end of the extension rod (31) is provided with a bending head (311). When installing the locking piece (3), you need to pinch the bent head (311) with your hand and pry it outwards.
5. The anti-damage thoracentesis drainage integrated needle according to claim 4, characterized in that: The bottom of the positioning sticker (2) is provided with an adhesive layer (22), and the top of the positioning sticker (2) is provided with a through tube (21). The needle (1) passes through the tube (21), and the locking piece (3) abuts against the top of the tube (21).
6. The anti-damage thoracentesis drainage integrated needle according to claim 1, characterized in that: The connector (41) is provided with a positioning ring (411), and the number of positioning rings (411) is set to two; One end of the pinching plate (5) is provided with a collar (52), and an opening (521) is provided on the collar (52); The collar (52) is located between the two positioning rings (411); Both sides of the pinch plate (5) are provided with protrusions (51).
7. The anti-damage thoracentesis drainage integrated needle according to claim 1, characterized in that: The top of the connector (41) is provided with a base (412), and a spring (43) is sleeved on the base (412). The other end of the drain pipe (42) is provided with a second connector (421).
8. The anti-trauma thoracentesis drainage integrated needle according to claim 1, characterized in that: The top of the needle (1) is provided with a first connector (14), and the outer side of the first connector (14) is provided with an anti-slip groove (141). The first connector (14) is connected to the plug (41).
9. A thoracentesis drainage integrated needle with anti-trauma protection according to any one of claims 1 to 8, characterized in that: The needle (1) is made of a novel ultra-soft polymer and gallium metal composite. Gallium metal has the characteristics of solid-liquid phase transition and low melting point. The needle (1) is solid at room temperature and maintains sufficient hardness to pierce the skin and achieve normal puncture operation.
10. The anti-damage thoracentesis drainage integrated needle according to claim 9, characterized in that: After the needle (1) is inserted into the body, the metal gallium part is affected by the body temperature and undergoes irreversible softening within 60 seconds. After the phase change, the needle tip loses its original rigidity, thereby effectively avoiding secondary damage caused by the sharp needle after the puncture is completed.