An externally placed needle - fitting Y - type airtight puncture device with adjustable flow rate

Abstract

The present invention discloses an externally placed needle fitting type Y-shaped closed puncture device with adjustable flow rate, belonging to the field of medical devices. The device adopts an integrated design of the external needle and the drainage tube, avoiding the complex steps of using a guide wire and a skin dilator in traditional operations, enabling the drainage tube to be placed synchronously during the puncture process, significantly simplifying the operation process and reducing the infection risk. The flow rate adjustment device uses a Robert clip to flexibly control the liquid flow rate, with a simple design and convenient operation, which can effectively reduce the complications caused by too fast flow rate. The Y-shaped drainage tube structure separates the drainage outlet from the liquid medicine injection port, preventing cross-contamination, and improving the safety of patient treatment through reliable tightness and anti-infection ability. The present invention integrates simplified operation, flexible regulation and high efficiency and tightness, is applicable to clinical scenarios such as thoracic cavity, abdominal cavity and pericardial effusion drainage, and has significant innovation and wide clinical application value.

Description

Technical Field

[0001] The present invention relates to the field of medical devices. Specifically, the present invention provides an externally attached needle - fitting Y - type airtight puncture device with adjustable flow rate. Background Art

[0002] In modern medicine, puncture and drainage are widely used in clinical treatments such as thoracic cavity, abdominal cavity, and pericardial effusion. Especially in the treatment of diseases such as effusion, pneumothorax, and thoracic cavity infection, puncture and drainage have become common and effective treatment means. Traditional puncture and drainage methods generally include the following steps: First, puncture with a puncture needle, then place a guide wire. After removing the puncture needle, expand the skin with a skin dilator, and then place a drainage tube along the guide wire. Each step requires independent operation, and each operation requires precise operation techniques and tools, which not only increases the pain of patients but also increases the difficulty and time of the operation.

[0003] However, the existing puncture and drainage devices generally have the following problems:

[0004] 1. Complex operation: The operation process of existing devices is cumbersome and usually requires multiple steps, including puncture, guide wire placement, skin dilation, and drainage tube placement. The operation of each step not only increases the discomfort of patients but also increases the time and complexity of the operation.

[0005] 2. Non - adjustable flow rate: The flow rates of most existing drainage devices are fixed and cannot be dynamically adjusted according to the patient's condition and drainage requirements. Fixed flow rates may lead to too fast or too slow drainage, thereby affecting the patient's recovery speed or causing other complications.

[0006] 3. Poor airtightness: The airtightness of the existing drainage devices at the connection is poor, which may cause liquid backflow or gas entry, leading to serious complications such as infection, affecting the treatment effect and safety of patients.

[0007] 4. Single function: Most existing devices only have the drainage function and cannot complete multiple operations such as injecting liquid medicine at the same time, resulting in the need for multiple devices or steps to complete different treatments, increasing the complexity of medical operations and treatment costs.

[0008] These problems not only affect the treatment effect of puncture and drainage but also increase the risk of infection during the operation. In order to improve the treatment efficiency, simplify the operation steps, and ensure patient safety, there is an urgent need for a new type of drainage device that can simplify the operation while having a flexible flow rate adjustment function and excellent airtightness.

[0009] Comparison with previous patents:

[0010] There are many patents related to puncture and drainage devices in the prior art, such as:

[0011] Blood collection device with a distal balloon mechanism JP2023501823A: This patent discloses a device for creating a puncture in tissue, including an elongated member and an inflation feature that can expand the puncture area or fix the device in a specific structure after inflation. Although the device has an inflation function to assist in fixing the puncture site, it still relies on traditional puncture steps and lacks a flow rate adjustment function, making it unable to flexibly adjust the drainage rate according to the different needs of patients. In addition, the inflation structure may bring additional complexity and inconvenience during the treatment process.

[0012] Puncture needle, puncture device, and blood collection device WO2020075735A1: This patent provides a puncture needle that reduces the puncture resistance by changing the structure of the needle body. This design makes the puncture process smoother, but this patent does not solve the problems of non-adjustable flow rate, poor airtightness, and cumbersome operation steps in existing puncture drainage devices. Its improvement mainly focuses on the needle body design and reducing puncture resistance, and does not involve flow rate control or multi-functional integration during the drainage process.

[0013] Puncture system JP2020540538: This patent provides a puncture system including inner and outer tubular structures and a puncture needle. The inner tube can move longitudinally relative to the outer tube, and the puncture needle can pass through the puncture lumen of the inner tube. This design has a certain degree of flexibility, but its operation process is still relatively complex, and it mainly focuses on the relative movement between the puncture needle and the inner and outer tubes, without proposing how to simplify the operation steps during the drainage process or improve the flexibility of flow rate adjustment. In addition, the problems of precise flow rate adjustment and airtightness during the puncture process have not been solved.

[0014] Compared with the prior art, the present invention eliminates the need for complex steps such as using guide wires and dilators in traditional techniques through an innovative external needle fitting drainage tube design, simplifies the operation process, greatly shortens the operation time, and reduces the trauma to the patient. The flow rate adjustment device uses a rotary pressing method to adjust the drainage rate, which is not only easy to operate but also can flexibly adjust the flow rate according to the patient's condition, avoiding the adverse consequences caused by a fixed flow rate in the prior art. In addition, the present invention adopts a Y-shaped drainage tube structure, which can effectively isolate the medicinal liquid and the drainage liquid, avoid cross-contamination, and enhance the airtightness, reducing the risk of infection.

[0015] Therefore, the present invention has made significant innovations in aspects such as simplification of the puncture device, flow rate adjustment, airtightness, and anti-infection ability, solved multiple problems existing in the prior art, and has higher clinical application value. Summary of the Invention

[0016] The present invention provides an externally - placed needle - fitting Y - shaped airtight puncture device with adjustable flow rate. The core innovation of this device lies in simplifying the traditional puncture and drainage process, reducing patient trauma, achieving flexible adjustment of the flow rate, and enhancing the airtightness and anti - infection ability of the device. This device is widely applicable to the treatment of pleural effusion, peritoneal effusion, pericardial effusion drainage, etc. in clinical practice.

[0017] The technical solution of the present invention is described as follows:

[0018] An externally - placed needle - fitting Y - shaped airtight puncture device with adjustable flow rate, comprising an externally - placed needle, a drainage tube, and a flow - rate adjusting clip;

[0019] The externally - placed needle includes a first needle body, a second needle body, and a fixing clip. The first needle body and the second needle body are both semi - cylindrical in shape, and they are combined in a matching manner to form the overall externally - placed needle. A first connecting ear is provided on the side of the first needle body, and a buckle protrusion is provided on the first connecting ear. A second connecting ear is provided on the side of the second needle body, and a buckle hole matching the buckle protrusion is provided on the second connecting ear. The fixing clip is arranged outside the first connecting ear and the second connecting ear for clamping and fixing;

[0020] The drainage tube includes a first tube body, a second tube body, and a Y - shaped drainage head arranged in sequence. The externally - placed needle is connected and installed on the outside of the first tube body;

[0021] The flow - rate adjusting clip is arranged on the second tube body of the drainage tube.

[0022] In the above - mentioned technical solution, the first needle body and the second needle body have tips for the insertion of the externally - placed needle.

[0023] In the above - mentioned technical solution, the outer diameter of the second needle body is slightly larger than that of the first needle body, and the opening angle of the second needle body is slightly larger than that of the first needle body, so that a part of the second needle body wraps the first needle body from the outside to achieve a sealed connection.

[0024] In the above - mentioned technical solution, preferably, the opening angle of the second needle body is greater than 180 degrees.

[0025] In the above - mentioned technical solution, a restricted part is provided on the outer wall of the first tube body, and a limiting part matching the restricted part is provided on the inner walls of the first needle body and the second needle body. The fixed cooperation between the externally - placed needle and the drainage tube is achieved through the cooperation of the restricted part and the limiting part.

[0026] In the above - mentioned technical solution, preferably, the restricted part and the limiting part are uniformly distributed bumps.

[0027] In the above - mentioned technical solution, a drainage hole is provided at the front part of the first tube body.

[0028] In the above - mentioned technical solution, the Y - shaped drainage head has two independent liquid - flow channels.

[0029] In the above technical solution, the flow rate adjusting clamp is a Robert clamp.

[0030] Beneficial effects:

[0031] 1. Integrated design of the external needle and the drainage tube

[0032] The external needle and the drainage tube of the present invention adopt an integrated design, so that the puncture needle and the drainage tube can be closely fitted during the operation, and after the puncture is completed, the external needle can be easily disassembled. In the traditional puncture drainage technique, usually a puncture needle is first used for puncture, then a guide wire is placed, and then the puncture needle is removed. The skin is dilated by a skin dilator, and finally the drainage tube is inserted along the guide wire. This process requires multiple operations, increasing the pain of the patient and the complexity of the operation.

[0033] However, with the external needle design of the present invention, by wrapping the drainage tube, the external needle and the drainage tube enter the patient's body together during the puncture process. After the puncture is completed, the external needle can be disassembled, leaving the drainage tube. This design not only simplifies the puncture drainage process, but also avoids the repeated placement of the guide wire, skin dilator and drainage tube, greatly reducing the surgical steps, shortening the operation time, and reducing the trauma of the patient.

[0034] 2. Adjustable flow rate device

[0035] The flow rate adjusting device of the present invention adopts a Robert clamp, and the flow rate of the liquid in the drainage tube can be flexibly adjusted by simple clamping or loosening operations. Compared with the traditional drainage device that mostly adopts a fixed flow rate and cannot dynamically adjust according to the specific condition of the patient, the design of the present invention can effectively avoid complications caused by too fast or too slow flow rate, such as thrombus formation, liquid accumulation, etc.

[0036] The adjustment mechanism of the Robert clamp of the present invention is easy to operate. Medical staff can quickly adjust the flow rate according to the patient's condition (such as the amount of liquid accumulation and the pressure in the body). The adjustment range is from 0.1 ml per minute to 100 ml, which meets the needs of different types of patients, ensuring the safety and efficiency of the drainage process. At the same time, the device has a reliable structure and is convenient to use, suitable for rapid clinical operation, further improving the treatment efficiency.

[0037] 3. Y-shaped drainage tube design

[0038] The present invention adopts a Y-shaped drainage tube, which has two independent channels, one for the discharge of the drained liquid and the other for the injection of the medicinal liquid. The traditional puncture drainage device often does not distinguish between the drainage and medicine injection channels, which easily leads to cross-contamination between the two, affecting the treatment effect.

[0039] Through the Y-shaped structure, the present invention can effectively isolate the medicinal liquid and the drainage liquid, prevent cross-contamination, and ensure the purity of the medicinal liquid and the safety of the drainage liquid. At the same time, the Y-shaped design is beneficial to reducing the flow resistance in the pipeline, improving the drainage effect, and ensuring the smoothness of liquid flow.

[0040] 4. Hermetic Structure and Anti-Infection Design

[0041] To ensure a sterile environment during the drainage process, the present invention adopts a hermetic structure, which can prevent liquid backflow or gas entry, reducing the risk of infection. Traditional drainage devices often have poor sealing at the connection, resulting in the intrusion of air or bacteria, increasing the risk of infection, especially during the operation.

[0042] The hermetic design of the present invention can effectively guarantee the integrity of the drainage system, avoiding infection problems caused by air or bacteria entering the body. This design enables the device to have a high anti-infection ability and improves the safety during the treatment process.

[0043] 5. External Needle Removal Device

[0044] The present invention also introduces an external needle removal device, which is mainly composed of two semi-cylindrical structures. These two semi-cylindrical structures fit with the small ears of the puncture needle and fix the external needle through an elastic wrapping locking device. After the puncture is completed, the locking can be released through the removal device, and the external needle can be easily removed, avoiding the cumbersome operation of relying on multiple steps to remove the external needle in traditional equipment.

[0045] This innovative design ensures the stability of the external needle during the puncture process, avoiding the displacement or instability of the puncture needle. At the same time, it simplifies the removal process and improves the safety and convenience of the operation.

[0046] 6. Superior Operational Convenience and Patient Experience

[0047] Through the above technological innovations, the present invention significantly simplifies the puncture and drainage operation process, reduces the steps and operation difficulty, and avoids traumatic operations such as repeated punctures and skin dilation for patients. The integrated design of the external needle enables the drainage tube to be in place during puncture. After removing the external needle, the placement of the drainage tube can be completed without additional operations. In addition, the presence of the flow rate adjustment device allows medical staff to adjust the treatment plan in real time according to the patient's condition, improving the flexibility and personalization of the treatment.

[0048] 7. Wide Applicability

[0049] The present invention is applicable to various clinical situations requiring puncture and drainage, including but not limited to the drainage treatment of diseases such as pleural effusion, ascites, and pericardial effusion. Its simplicity, flexibility, and anti-infection properties in design make it have wide applicability and good treatment effects in clinical applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0051] Figure 2 is a schematic diagram of the local structure of the external needle;

[0052] Figure 3 is a schematic side view structure of the external needle;

[0053] Figure 4 is a schematic diagram of the structure of the first needle body;

[0054] Figure 5 is a schematic diagram of the structure of the second needle body;

[0055] Figure 6 is a schematic diagram of the structure of the drainage tube;

[0056] Figure 7 is a schematic diagram of the structure of the flow rate adjusting clip.

[0057] Wherein: 1 is the external needle, 1-1 is the first needle body, 1-2 is the second needle body, 1-3 is the first connecting ear, 1-4 is the second connecting ear, 1-5 is the fixing clip, 1-6 is the buckle protrusion, 1-7 is the buckle hole, 1-8 is the tip, 2 is the drainage tube, 2-1 is the first tube body, 2-2 is the second tube body, 2-3 is the Y-shaped drainage head, and 3 is the flow rate adjusting clip. DETAILED DESCRIPTION OF THE INVENTION

[0058] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. However, the following embodiments are only for explaining the present invention, and the protection scope of the present invention should include all the contents of the claims. Moreover, through the description of the following embodiments, those skilled in the art can fully implement all the contents of the claims of the present invention.

[0059] Embodiment

[0060] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 shown, a Y-shaped airtight puncture device with adjustable flow rate and external needle fitting includes an external needle 1, a drainage tube 2, and a flow rate adjusting clip 3;

[0061] The external needle 1 includes a first needle body 1-1, a second needle body 1-2 and a fixing clip 1-5. The first needle body 1-1 and the second needle body 1-2 are both semi-cylindrical in shape, and are combined in a matching manner to form the overall external needle 1. A first connecting ear 1-3 is provided on the side of the first needle body 1-1, and a buckle protrusion 1-6 is provided on the first connecting ear 1-3. A second connecting ear 1-4 is provided on the side of the second needle body 1-2, and a buckle hole 1-7 that cooperates with the buckle protrusion 1-6 is provided on the second connecting ear 1-4. The fixing clip 1-5 is provided outside the first connecting ear 1-3 and the second connecting ear 1-4 for clamping and fixing.

[0062] The drainage tube 2 includes a first tube body 2-1, a second tube body 2-2 and a Y-shaped drainage head 2-3 arranged in sequence. The external needle 1 is connected and installed on the outside of the first tube body 2-1.

[0063] The flow rate adjusting clip 3 is provided on the second tube body 2-2 of the drainage tube 2.

[0064] In this embodiment, the first needle body 1-1 and the second needle body 1-2 have a tip 1-8 for the insertion of the external needle 1.

[0065] In this embodiment, the outer diameter of the second needle body 1-2 is slightly larger than that of the first needle body 1-1, and the opening angle of the second needle body 1-2 is slightly larger than that of the first needle body 1-1, so that a part of the second needle body 1-2 wraps the first needle body 1-1 from the outside to achieve a sealed connection. The opening angle of the second needle body 1-2 is greater than 180 degrees.

[0066] In this embodiment, a restricted part is provided on the outer wall of the first tube body 2-1, and a limiting part that matches the restricted part is provided on the inner walls of the first needle body 1-1 and the second needle body 1-2. The fixed cooperation between the external needle 1 and the drainage tube 2 is achieved through the cooperation of the restricted part and the limiting part. The restricted part and the limiting part are uniformly distributed convex points.

[0067] In this embodiment, a drainage hole is provided at the front part of the first tube body 2-1.

[0068] In this embodiment, the Y-shaped drainage head 2-3 has two independent liquid flow channels.

[0069] In this embodiment, the flow rate adjusting clip 3 is a Robert clip.

[0070] Usage method of an externally placed needle - fitting Y - type airtight puncture device with adjustable flow rate: First, medical staff complete puncture through the externally placed needle and place the drainage tube at a predetermined position through the externally placed needle. After the externally placed needle completes puncture, it can be disassembled, avoiding multiple operation steps of guide wire and skin dilator. After the externally placed needle is disassembled, the drainage tube has been successfully placed. According to the patient's condition, medical staff adjust the flow rate by rotating or sliding the valve body to ensure that the speed of drainage or drug injection meets the requirements of clinical treatment. After the treatment is completed, the externally placed needle can be conveniently disassembled, and the drainage tube can be extended, shortened or removed as needed. Scope of application: This device is applicable to the drainage of pleural effusion, peritoneal effusion and pericardial effusion. The flexibility of flow rate adjustment of this device enables it to adapt to a variety of complex clinical needs and is widely used in various fields such as general surgery, interventional therapy, first aid and rehabilitation therapy.

[0071] The above - mentioned are only specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. An external needle-fitting, flow-rate-adjustable Y-shaped closed puncture device, characterized in that: It includes an external needle, a drainage tube and a flow rate regulating clip; The external needle comprises a first needle body, a second needle body and a fixing clip, the first needle body and the second needle body are both semi-cylindrical, and are matched to form the external needle as a whole, the outer diameter of the second needle body is slightly larger than the first needle body, and the angle of the second needle body opening is slightly larger than the first needle body, so that a part of the second needle body wraps the first needle body from the outside to achieve a sealed connection, and the angle of the second needle body opening is greater than 180 degrees; a first connecting ear is provided on the side of the first needle body, a buckle protrusion is provided on the first connecting ear, a second connecting ear is provided on the side of the second needle body, a buckle hole matching the buckle protrusion is provided on the second connecting ear, and the fixing clip is provided on the outside of the first connecting ear and the second connecting ear for clamping and fixing; The drainage tube comprises a first tube body, a second tube body and a Y-shaped drainage head which are arranged in sequence, and the external needle is connected and installed on the outer side of the first tube body; The flow rate regulating clip is arranged on the second tube body of the drainage tube.

2. The external needle-fitting, flow-rate-adjustable Y-shaped closed puncture device according to claim 1, characterized in that: The first needle body and the second needle body have sharp points for insertion of an external needle.

3. The external needle-fitting, flow-rate-adjustable Y-shaped closed puncture device according to claim 1, characterized in that: A restricted portion is disposed on the outer wall of the first tube body, and a limiting portion matching the restricted portion is disposed on the inner walls of the first needle body and the second needle body, so that the external needle and the drainage tube are fixedly matched by the cooperation between the restricted portion and the limiting portion.

4. The external needle-fitting, flow-rate-adjustable Y-shaped closed puncture device according to claim 3, characterized in that: The restricted portions are evenly distributed convex points.

5. The external needle-fitting, flow-rate-adjustable Y-shaped closed puncture device according to claim 3, characterized in that: The limiting parts are evenly distributed convex points.

6. The external needle-fitting, flow-rate-adjustable Y-shaped closed puncture device according to claim 1, characterized in that: A drainage hole is arranged at the front of the first tube body.

7. The external needle-fitting, flow-rate-adjustable Y-shaped closed puncture device according to claim 1, characterized in that: The Y-shaped drainage head has two independent liquid flow channels.

8. The external needle-fitting, flow-rate-adjustable Y-shaped closed puncture device according to claim 1, characterized in that: The flow rate regulating clamp is a Robert clamp.

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