Lung puncture coaxial hollow-core needle capable of injecting medicine and exhausting air in one way
By designing a lung puncture coaxial hollow core needle that can inject drugs and exhaust unidirectionally, the problems of pollution, air embolism and cumbersome operation in the prior art are solved, and a more efficient and safe lung puncture biopsy process is achieved.
Patent Information
- Application Number
- CN202411749743.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-02
- Publication Date
- 2025-03-04
AI Technical Summary
There are problems such as pollution, air embolism, and cumbersome operation in the existing lung aspiration biopsy technology. Especially when multiple materials are taken and drug injections, it is difficult to effectively prevent external air and pollutants from entering, increasing the risk of complications.
A lung-puncture coaxial hollow core needle that can inject drugs and unidirectional exhaust is designed. After penetrating the rubber membrane and a one-way air valve, needle core or biopsy needle penetrates the rubber membrane, enters the closed coaxial needle cavity, reducing contamination and air embolization, and by increasing the gap between the needle core and coaxial, reducing gas pressure and friction resistance, and improving material extraction efficiency.
It effectively reduces the risk of pollution and air embolization, improves the efficiency of material extraction and the quality of tissue samples, simplifies drug injection operations, and reduces the incidence of complications during the puncture process.
Smart Images
Figure CN119548218A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of lung puncture, in particular to a lung puncture coaxial hollow needle capable of injecting medicine and unidirectionally exhausting air. Background Art
[0002] At present, clinical lung puncture biopsy generally uses coaxial puncture biopsy technology. The coaxial hollow needle is used as a guide needle (needle sheath) to be inserted into the patient's body to the surface of the lung lesion. With the biopsy needle as the needle core, the biopsy needle can be inserted multiple times for sampling without withdrawing the needle sheath, thereby reducing repeated punctures, resulting in some problems in use. First, the general coaxial needle does not have a tail plug. When sampling multiple times, the biopsy needle must be inserted after the needle core is pulled out for a few seconds. After the biopsy needle is pulled out and the specimen is taken, the biopsy needle must be inserted again for more than ten seconds or tens of seconds. During the interval, an open space is formed in the coaxial needle cavity, and there is a risk of outside air or even pollutants and pathogens flying into it.
[0003] Second, when inserting the needle core or biopsy needle, there is a risk of squeezing the air in the needle cavity into the lungs, causing air embolism. Air embolism is the most fatal complication of lung puncture biopsy, and once it occurs, the mortality rate is extremely high. Third, in order to reduce complications, doctors often inject hemostatic drugs into the lungs through the coaxial needle cavity during puncture. At this time, the needle core or puncture needle needs to be pulled out and then the drug is injected, which poses a risk of contamination and air embolism. Fourth, during lung puncture biopsy, some patients have thick chest walls, and the syringe needle used for local anesthetics is generally not long enough to reach a deep enough anesthesia position. A coaxial hollow needle is needed to serve as the needle for the local anesthetic, and the needle core needs to be withdrawn and then connected to the syringe. The operation is cumbersome and cannot quickly and gradually anesthetize from the skin to the pleura layer by layer. Therefore, in response to the above four problems and to better solve the above problems, this scheme proposes a lung puncture coaxial hollow needle that can inject drugs and exhaust one-way. Summary of the invention
[0004] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art, and to provide a lung puncture coaxial hollow needle that can inject drugs and exhaust air in one direction. Through the tail plug rubber membrane, the needle core or the biopsy needle penetrates the rubber membrane and enters the relatively closed coaxial needle cavity, thereby reducing pollution and air embolism. By using a one-way air valve and increasing the gap between the needle core and the coaxial, the gas pressure in the needle cavity is reduced, which can effectively reduce air embolism. By increasing the gap between the needle core and the coaxial, there is less friction resistance, which is conducive to cutting and sampling, and is conducive to obtaining a sufficient amount of tissue samples. The drug syringe is connected from the side and does not conflict with the needle core or the puncture needle, so the operation of injecting drugs during puncture is faster and more convenient.
[0005] The present invention also provides a lung puncture coaxial hollow needle with the above-mentioned injectable drug and one-way exhaust, comprising: a four-way connecting body, the outer surface of the four-way connecting body is provided with a first connecting port, the port of the first connecting port is detachably connected to a locking conical joint, the port of the locking conical joint is fixedly connected to a rubber membrane, the outer surface of the four-way connecting body is provided with a second connecting port, the port of the second connecting port is fixedly connected to a Luer joint, and the outer port of the Luer joint is threadedly connected to a closing cap; the outer surface of the four-way connecting body is provided with a third connecting port, the port of the third connecting port is fixedly connected to a plastic catheter, the port of the plastic catheter is fixedly connected to a heparin cap, the outer surface of the four-way connecting body is provided with a fourth connecting port, the port of the fourth connecting port is fixedly connected to a hollow coaxial needle, the outer surface of the four-way connecting body is detachably connected to a connecting sheet, one end of the connecting sheet is fixedly connected to a needle sleeve, and a needle core is provided inside the needle sleeve.
[0006] According to the present invention, the coaxial hollow needle for lung puncture capable of injecting medicine and exhausting air in one direction is provided with a scale line 1 on the outer surface of the hollow coaxial needle, and the needle core is installed inside the hollow coaxial needle. The puncture depth can be intuitively judged by the scale line 1.
[0007] According to the coaxial hollow lung puncture needle capable of injecting medicine and exhausting air in one direction provided by the present invention, a cap is detachably connected to the port of the needle sleeve, and the needle sleeve is tightly covered by the cap to effectively protect the needle core stored therein.
[0008] According to the present invention, the lung puncture coaxial hollow needle capable of injecting drugs and unidirectional exhaust is provided with a handle at the tail of the needle core, and a second scale line is provided on the outer surface of the needle core. The second scale line allows the user to more intuitively judge the insertion depth of the needle core after piercing the rubber membrane.
[0009] According to the lung puncture coaxial hollow needle capable of injecting drugs and exhausting air in one direction provided by the present invention, the first connection port is interconnected with the interior of the four-way connecting body, and the second connection port is interconnected with the interior of the four-way connecting body, so that the interior is in an interconnected state.
[0010] According to the lung puncture coaxial hollow needle capable of injecting drugs and exhausting air in one direction provided by the present invention, the third connection port is interconnected with the interior of the four-way connecting body, and the fourth connection port is interconnected with the interior of the four-way connecting body, so that the interiors thereof are interconnected.
[0011] According to the present invention, the coaxial hollow needle for lung puncture capable of injecting drugs and unidirectionally exhausting air is made of medical stainless steel and the needle core, and the four-way connecting body is made of acrylonitrile butadiene styrene material.
[0012] Compared with the prior art, the lung puncture coaxial hollow needle capable of injecting drugs and unidirectionally exhausting air passes through the tail plug rubber membrane, and the needle core or biopsy needle penetrates the rubber membrane and enters the relatively closed coaxial needle cavity, thereby reducing contamination and air embolism.
[0013] Compared with the prior art, the coaxial hollow lung puncture needle of the present invention, which can inject drugs and exhaust air in one direction, utilizes a one-way air valve and increases the gap between the needle core and the coaxial needle to reduce the gas pressure in the needle cavity, thereby effectively reducing air embolism.
[0014] Compared with the prior art, the coaxial hollow needle for lung puncture capable of injecting drugs and unidirectional exhaust of the present invention has less friction resistance by increasing the gap between the needle core and the coaxial part, which is conducive to cutting and sampling, and is conducive to obtaining a sufficient amount of tissue samples. The drug syringe is connected laterally and does not conflict with the needle core or puncture needle, making the operation of injecting drugs during puncture faster and more convenient. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The present invention is further described below in conjunction with the accompanying drawings and embodiments;
[0016] Figure 1 The overall structure diagram of the lung puncture coaxial hollow needle capable of injecting drugs and exhausting air in one direction of the present invention;
[0017] Figure 2 A top view of the coaxial hollow needle for lung puncture capable of injecting drugs and unidirectionally exhausting gas according to the present invention;
[0018] Figure 3 A bottom view of the coaxial hollow needle for lung puncture capable of injecting drugs and exhausting air in one direction according to the present invention;
[0019] Figure 4 This is an exploded view of the lung puncture coaxial hollow needle capable of injecting drugs and unidirectionally exhausting gas according to the present invention.
[0020] Legend:
[0021] 1. Four-way connecting body; 2. First connecting port; 3. Locking conical joint; 4. Second connecting port; 5. Third connecting port; 6. Fourth connecting port; 7. Plastic catheter; 8. Heparin cap; 9. Luer connector; 10. Closing cap; 11. Hollow coaxial needle; 12. Scale line one; 13. Needle sleeve; 14. Rubber membrane; 15. Cover cap; 16. Needle core; 17. Connecting piece; 18. Handle; 19. Scale line two. DETAILED DESCRIPTION
[0022] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.
[0023] Reference Figure 1-4 The embodiment of the present invention is a lung puncture coaxial hollow needle that can inject drugs and exhaust air in one direction, which includes: a four-way connecting body 1, which is used to connect four interfaces to form a four-way structure. The outer surface of the four-way connecting body 1 is provided with a first connecting port 2, and a locking conical joint 3 is detachably connected to the end of the first connecting port 2. A rubber membrane 14 is fixedly connected to the end of the locking conical joint 3, which is made of medical rubber, which is convenient for the insertion of the needle core 16 and the biopsy needle, and effectively protects the environment inside the four-way connecting body 1 from external pollution. The outer surface of the four-way connecting body 1 is provided with a second connecting port 4, and a Luer connector 9 is fixedly connected to the end of the second connecting port 4. It is a quick connector commonly used in medical equipment and is suitable for gas and liquid transportation. It has the advantages of quick connection and disassembly, good sealing, corrosion resistance and one-way air intake. A closing cap 10 is threadedly connected to the outer interface of the Luer connector 9 to control the internal flow of gas entering the Luer connector 9.
[0024] The outer surface of the four-way connecting body 1 is provided with a third connecting port 5, and a plastic catheter 7 is fixedly connected at the end of the third connecting port 5. The plastic catheter 7 is made of medical plastic, with an inner diameter of 0.8 mm and an outer diameter of 1.6 mm. The end of the plastic catheter 7 is fixedly connected with a heparin cap 8, which is a medical device, usually used to protect the venous puncture point during hemodialysis. It is made by injecting anticoagulants such as heparin, which can prevent blood coagulation, thereby maintaining smooth blood flow during hemodialysis. The outer surface of the four-way connecting body 1 is provided with a fourth connecting port 6, and a hollow coaxial needle 11 is fixedly connected at the end of the fourth connecting port 6. The length is 150 mm, the outer diameter is 1.4 mm, and the inner diameter is 1.3 mm. The cavity can accommodate a biopsy needle of 18 g or thinner. The outer surface of the four-way connecting body 1 is detachably connected with a connecting piece 17, which is used to prevent the needle sleeve 13 and the needle core 16 stored therein from being lost when not in use, and to be broken by pulling when in use. One end of the connecting piece 17 is fixedly connected to the needle sleeve 13 for protecting the unused needle core 16. The needle sleeve 13 has the needle core 16 inside, which is an 18g steel needle with a total length of 200mm. The end of the needle sleeve 13 is detachably connected to a cap 15.
[0025] The outer surface of the hollow coaxial needle 11 is provided with a scale mark 12, and the needle core 16 is installed inside the hollow coaxial needle 11. The tail of the needle core 16 is provided with a handle 18, and the outer surface of the needle core 16 is provided with a scale mark 2 19.
[0026] The first connection port 2 is interconnected with the interior of the four-way connecting body 1, and the second connection port 4 is interconnected with the interior of the four-way connecting body 1. The third connection port 5 is interconnected with the interior of the four-way connecting body 1, and the fourth connection port 6 is interconnected with the interior of the four-way connecting body 1. The hollow coaxial needle 11 and the needle core 16 are both made of medical stainless steel, and the four-way connecting body 1 is made of acrylonitrile butadiene styrene material.
[0027] Working principle: When starting puncture, tighten the closure cap 10, insert the needle core 16 into the needle cavity of the hollow coaxial needle 11 through the rubber membrane 14 installed on the locking conical joint 3, and the puncture depth is until the needle tip of the needle core 16 is slightly exposed. Insert the local anesthetic syringe at the heparin cap 8 and slowly push the local anesthetic to fill the gap between the needle core 16 and the hollow coaxial needle 11. When the puncture depth is large and local anesthetic needs to be injected, the syringe connected to the heparin cap 8 is first withdrawn to avoid mistaken entry into the blood vessel, and then an appropriate amount of medicine is injected at the needle tip of the needle core 16. When puncturing and taking samples, remove the closure cap 10 and use the one-way air valve in the Luer joint 9 to allow the needle core 16 or the biopsy needle to enter and exit the rubber membrane 14 multiple times. After puncturing and taking samples, in order to reduce the risk of bleeding, some patients may need to inject hemostatic drugs locally. The needle core 16 or the biopsy needle can be directly connected to the syringe on the heparin cap 8 without removing it, and the closure cap 10 is tightened when necessary.
[0028] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.
Claims
1. A coaxial hollow needle for lung puncture capable of injecting drugs and exhausting air in one direction, characterized in that: include: A four-way connecting body (1), wherein a first connecting port (2) is provided on the outer surface of the four-way connecting body (1), a locking conical joint (3) is detachably connected to the end of the first connecting port (2), a rubber membrane (14) is fixedly connected to the end of the locking conical joint (3), a second connecting port (4) is provided on the outer surface of the four-way connecting body (1), a Luer joint (9) is fixedly connected to the end of the second connecting port (4), and a closing cap (10) is threadedly connected to the outer interface of the Luer joint (9); The outer surface of the four-way connecting body (1) is provided with a third connecting port (5), a plastic catheter (7) is fixedly connected to the end of the third connecting port (5), a heparin cap (8) is fixedly connected to the end of the plastic catheter (7), the outer surface of the four-way connecting body (1) is provided with a fourth connecting port (6), a hollow coaxial needle (11) is fixedly connected to the end of the fourth connecting port (6), the outer surface of the four-way connecting body (1) is detachably connected with a connecting piece (17), one end of the connecting piece (17) is fixedly connected to a needle sleeve (13), and a needle core (16) is provided inside the needle sleeve (13).
2. The coaxial hollow needle for lung puncture capable of injecting drugs and exhausting air in one direction according to claim 1, characterized in that: The outer surface of the hollow coaxial needle (11) is provided with a scale line one (12), and the needle core (16) is installed inside the hollow coaxial needle (11).
3. The coaxial hollow needle for lung puncture capable of injecting drugs and exhausting air in one direction according to claim 1, characterized in that: A cover cap (15) is detachably connected to the end of the needle sleeve (13).
4. The lung puncture coaxial hollow needle capable of injecting drugs and exhausting air in one direction according to claim 1, characterized in that: The tail of the needle core (16) is provided with a handle (18), and the outer surface of the needle core (16) is provided with a second scale line (19).
5. The lung puncture coaxial hollow needle capable of injecting drugs and exhausting air in one direction according to claim 1, characterized in that: The first connection port (2) is in communication with the interior of the four-way connecting body (1), and the second connection port (4) is in communication with the interior of the four-way connecting body (1).
6. The lung puncture coaxial hollow needle capable of injecting drugs and exhausting air in one direction according to claim 1, characterized in that: The third connection port (5) is in communication with the interior of the four-way connecting body (1), and the fourth connection port (6) is in communication with the interior of the four-way connecting body (1).
7. The lung puncture coaxial hollow needle capable of injecting drugs and exhausting air in one direction according to claim 1, characterized in that: The hollow coaxial needle (11) and the needle core (16) are both made of medical stainless steel, and the four-way connecting body (1) is made of acrylonitrile butadiene styrene material.