Thoracic cavity puncture outfit

Abstract

The thoracocentesis device comprises a cannula assembly, a puncture assembly, a light-emitting assembly, a light sensing device and a control device, and the cannula assembly is provided with a puncture channel; the puncture assembly comprises a needle handle and a puncture needle, the needle handle is connected to the upper end of the puncture needle, and the puncture needle is slidably inserted into the puncture channel; the light-emitting assembly is connected to the puncture needle, and light emitted by the light-emitting assembly is projected outwards from a light projection part at the lower end of the puncture needle. The light sensing device is arranged at the lower end of the puncture needle, a light shield is arranged between the light sensing device and the light projection part, and the light sensing device is used for detecting light scattered by the chest wall and sending out a first signal according to the light; the control device is connected to the needle handle, the light sensing device is electrically connected to the control device, and the control device is used for detecting the first signal, sending out a reminding instruction to the indicator light according to whether the first signal is received or not and controlling the indicator light to be turned on or turned off or change colors.

Description

Technical Field

[0001] This invention relates to the field of surgical instruments, and more particularly to a thoracentesis device. Background Technology

[0002] A thoracentesis device, a specialized medical instrument used in minimally invasive thoracic surgery, is primarily used to safely penetrate the chest wall and create a passage to allow for subsequent procedures such as pleural effusion drainage, medication administration, disease diagnosis, and surgical procedures. Its main components are a puncture needle and a cannula. The puncture needle is inserted into the cannula, and both work together to penetrate the chest wall. The puncture needle is then withdrawn, leaving the cannula in the chest wall, thus establishing a passage.

[0003] Existing thoracentesis devices typically rely on the operator's experience during use. They are often blindly punctured based on the feeling of emptiness when puncturing the abdominal wall, or judged by clinical experience to determine the puncture depth. However, due to individual differences in the thickness and toughness of the abdominal wall among different patients, especially the increase in obese patients, the difficulty of puncture has increased dramatically. In addition, the shape of the abdominal wall changes with the movement of the puncture component tip during puncture. Therefore, relying solely on clinical experience often leads to puncture failure, requiring repeated punctures. This can cause the puncture needle to be pushed too deep under inertial force, damaging the organs and blood vessels in the abdominal cavity. In severe cases, it can lead to the tearing of major abdominal blood vessels, endangering the patient's life.

[0004] To address this issue, the present invention provides a thoracentesis device that effectively solves the above problems, allowing the operator to visually observe feedback information indicating whether the puncture has been completed. Summary of the Invention

[0005] To overcome the shortcomings of the prior art, the present invention provides a thoracentesis device that allows the operator to intuitively observe feedback information on whether the puncture has been completed.

[0006] The technical solution adopted by this invention to solve its technical problem is: A thoracentesis apparatus, comprising: A cannula assembly, wherein the cannula assembly is provided with a puncture channel; A puncture assembly, comprising a needle handle and a puncture needle, wherein the needle handle is connected to the upper end of the puncture needle, and the puncture needle is slidably inserted into the puncture channel; A light-emitting component is connected to the puncture needle, and the light emitted by the light-emitting component is projected outward from the light projection part at the lower end of the puncture needle; A light-sensing device is disposed at the lower end of the puncture needle, and a light shield is provided between the light-sensing device and the light projection part. The light-sensing device is used to detect the light scattered by the chest wall and emit a first signal accordingly. A control device is connected to the needle handle, and a light sensor is electrically connected to the control device. The control device is used to detect the first signal, and issue a reminder command to the indicator light according to whether the first signal is received, and control the indicator light to turn on or off or change color.

[0007] As an improvement of the present invention, the light-emitting component includes a light-emitting element and an optical fiber. The puncture needle is provided with an optical fiber channel. The light-emitting element is connected to the control device. The optical fiber is disposed in the optical fiber channel. The two ends of the optical fiber are respectively connected to the light-emitting element and the light projection part to conduct the light emitted by the light-emitting element to the light projection part.

[0008] As an improvement of the present invention, the thoracentesis device further includes a first connecting cable, the puncture needle is provided with a first cable channel, the first connecting cable is disposed in the first cable channel, and its two ends are respectively connected to the photosensitive device and the control device, and the first signal emitted by the photosensitive device is transmitted to the control device through the first connecting cable.

[0009] As an improvement of the present invention, the lower end of the puncture needle is provided with a first receiving groove, the light sensing device and the light shield are disposed in the first receiving groove, and the light sensing device is approximately flush with the outer surface of the puncture needle.

[0010] As an improvement of the present invention, the thoracentesis device further includes a pressure-sensing device electrically connected to the control device. The pressure-sensing device is used to detect whether the chest wall is pressing against the part of the puncture needle where the pressure-sensing device is located and to emit a second signal. The control device detects the first signal and the second signal, and issues a reminder command to the indicator light according to whether the first signal and / or the second signal is received, and controls the indicator light to light up or turn off or change color.

[0011] As an improvement of the present invention, the thoracentesis device further includes a second connecting cable. The puncture needle is provided with a second cable channel. The second connecting cable is disposed in the second cable channel and its two ends are respectively connected to the pressure sensing device and the control device. The second signal emitted by the pressure sensing device is transmitted to the control device through the second connecting cable.

[0012] As an improvement of the present invention, the lower end of the puncture needle is provided with a second receiving groove, the pressure sensing device is disposed in the second receiving groove, and the pressure sensing device is approximately flush with the outer surface of the puncture needle.

[0013] As an improvement of the present invention, the needle handle includes a base and a cover plate. The base is connected to the upper end of the puncture needle, and the cover plate is connected to and covers the base. An accommodating space is formed between the base and the cover plate, and the control device is disposed within the accommodating space.

[0014] As an improvement of the present invention, the cannula assembly includes a limiting platform, an insertion tube, an air supply tube, and a limiting airbag. The limiting platform is connected to the upper end of the insertion tube, the puncture channel passes through the limiting platform and the insertion tube, and an air guiding channel is provided in the side wall of the insertion tube and inside the limiting platform. The air supply tube is connected to the limiting platform and communicates with the air guiding channel, and the limiting airbag is connected to the lower part of the insertion tube and communicates with the air guiding channel.

[0015] As an improvement of the present invention, the outer wall of the insertion tube is provided with an annular groove, the limiting airbag is annular, and the limiting airbag is partially embedded in the annular groove.

[0016] As an improvement of the present invention, the air supply pipe is further provided with an air valve, which is used to open or close the air supply pipe.

[0017] The beneficial effects of this invention are as follows: With the above-described structure, during use, the puncture needle of the puncture assembly is inserted into the puncture channel. Holding the needle handle, the puncture needle and cannula assembly are inserted together into the patient's chest wall. When the lower end of the puncture needle (the part where the needle tip is) is still in the chest wall, the light emitted by the light-emitting component is emitted outward along the light projection part. The light hits the chest wall, is scattered by the chest wall tissue, and then diffuses to the light-sensing device located near the light-sensing device. The light-sensing device senses the light and emits a first signal to the control device. The control device issues a reminder command and controls the indicator light to light up, turn off, or change color. However, when the lower end of the puncture needle (the part where the needle tip is) completely penetrates the chest wall, since the light emitted outward through the light projection part does not directly hit the light-sensing device, the light-sensing device cannot sense the light and will not emit the first signal. The control device does not detect the first signal and controls the indicator light to change its light pattern. For example, when the lower end of the puncture needle (the part where the needle tip is) is still in the chest wall, the indicator light stays on and emits a red light; when the lower end of the puncture needle (the part where the needle tip is) penetrates the chest wall, the indicator light emits a green light. The operator can intuitively judge whether the lower end of the puncture needle (the part where the needle tip is) has penetrated the chest wall based on the light color, preventing safety risks caused by the operator using too much force. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. The accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention from one angle; Figure 2 This is a schematic diagram of the overall structure of the present invention from another perspective; Figure 3 This is an exploded schematic diagram of the cannula assembly and puncture assembly of the present invention; Figure 4 This is a cross-sectional structural schematic diagram of the present invention; Figure 5 yes Figure 4 Enlarged view of circle A; Figure 6 yes Figure 4 Enlarged view of circle B; Figure 7 yes Figure 4 Enlarged view at circle C Figure 8 This is a cross-sectional view of the sleeve assembly of the present invention. Detailed Implementation

[0021] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0022] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0023] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0024] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0025] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0026] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0027] Reference Figures 1 to 8 A thoracentesis apparatus, comprising: The cannula assembly 100 is provided with a puncture channel 121; The puncture assembly 200 includes a needle handle 210 and a puncture needle 220. The needle handle 210 is connected to the upper end of the puncture needle 220, and the puncture needle 220 is slidably inserted into the puncture channel 121. The light-emitting component 300 is connected to the puncture needle 220, and the light emitted by the light-emitting component 300 is projected outward from the light projection part 301 at the lower end of the puncture needle 220. A light sensor 400 is disposed at the lower end of the puncture needle 220, and a light shield 410 is provided between the light sensor 400 and the light projection part 301. The light sensor 400 is used to detect the light scattered by the chest wall and emit a first signal accordingly. A control device 500 is connected to the needle handle 210, and a light sensor 400 is electrically connected to the control device 500. The control device 500 is used to detect the first signal, and send a reminder command to the indicator light 600 according to whether the first signal is received, and control the indicator light 600 to turn on or off or change color.

[0028] With the above-described structure, during use, the puncture needle 220 of the puncture assembly 200 is inserted into the puncture channel 121. Holding the needle handle, the puncture needle 220 and the cannula assembly 100 are inserted together into the patient's chest wall. When the lower end of the puncture needle 220 (the part where the needle tip is) is still in the chest wall, the light emitted by the light-emitting assembly 300 is emitted outward along the light projection part 301. The light hits the chest wall, is scattered by the chest wall tissue, and then diffuses to the light-sensing device 400 located adjacent to the light-sensing device 400. The light-sensing device 400 senses... When light is received, the first signal is emitted to the control device 500. The control device 500 issues a reminder command, and the indicator light 600 is turned on, off, or changes color. However, when the lower end of the puncture needle 220 (the part where the needle tip is) has completely penetrated the chest wall, the light emitted outward through the light projection part 301 does not directly hit the light sensor 400. Therefore, the light sensor cannot sense the light and will not emit the first signal. The control device 500 does not detect the first signal and controls the indicator light 600 to change its light pattern. For example, when the lower end of the puncture needle 220 (the part where the needle tip is) is still in the chest wall, the indicator light remains lit, emitting a red light; while when the lower end of the puncture needle 220 (the part where the needle tip is) penetrates the chest wall, the indicator light 600 emits a green light. The operator can intuitively judge whether the lower end of the puncture needle 220 (the part where the needle tip is) has penetrated the chest wall based on the light color, preventing safety risks caused by excessive force.

[0029] In this embodiment, the light-emitting component 300 includes a light-emitting element 310 and an optical fiber 320. The puncture needle 220 is provided with an optical fiber channel 221. The light-emitting element 310 is connected to the control device 500. The optical fiber 320 is disposed in the optical fiber channel 221. The two ends of the optical fiber 320 are respectively connected to the light-emitting element 310 and the light projection part 301 to conduct the light emitted by the light-emitting element 310 to the light projection part 301. With the above-described structure, the light emitted by the light-emitting element 310 is conducted using the light 320. This allows for the conduction of light without conducting heat or electricity, ensuring surgical safety and preventing burns. Furthermore, the optical fiber is very thin (generally 0.25-1mm), which can be easily placed within the tiny optical fiber channel 221 without affecting the puncture effect of the puncture needle 220. In addition, the light transmitted through the optical fiber 320 has a high degree of unidirectionality, preventing the light from directly hitting the photosensitive device 400 and ensuring that the indicator light emitted by the product can accurately indicate whether the lower end (the part where the needle tip is) of the puncture needle 220 has penetrated the chest wall.

[0030] In this embodiment, the thoracentesis device further includes a first connecting cable 700. The puncture needle 220 has a first cable channel 222. The first connecting cable 700 is disposed within the first cable channel 222, and its two ends are respectively connected to the photosensitive device 400 and the control device 500. The first signal emitted by the photosensitive device 400 is transmitted to the control device 500 through the first connecting cable 700. By configuring the first connecting cable 700 within the first cable channel 222, the first connecting cable 700 can be effectively protected, preventing damage during use and further ensuring product stability, while also ensuring the stability of the first signal transmission.

[0031] In this embodiment, the lower end of the puncture needle 220 is provided with a first receiving groove 223. The light sensor 400 and the light shield 410 are disposed within the first receiving groove 223, and the light sensor 400 is approximately flush with the outer surface of the puncture needle 220. With this structure, the light sensor 400 is approximately flush with the outer surface of the puncture needle 220, ensuring smooth and stable insertion of the puncture needle 220 into the chest wall. This prevents the protruding light sensor 400 or the sidewall edge of the first receiving groove 223 from scraping against the chest wall tissue, ensuring product stability and reducing damage to the patient's chest wall tissue.

[0032] In this embodiment, the thoracentesis apparatus further includes a pressure-sensing device 800, which is electrically connected to the control device 500. The pressure-sensing device 800 is used to detect whether the chest wall is pressing against the part of the puncture needle 220 where the pressure-sensing device 800 is located, and emits a second signal. The control device 500 detects the first signal and the second signal, and issues a reminder command to the indicator light 600 according to whether the first signal and / or the second signal is received, and controls the indicator light 600 to light up, turn off, or change color. With the above-described structure, when the lower end (tip portion) of the puncture needle 220 is still against the chest wall, the chest wall continuously compresses the lower end (tip portion) of the puncture needle 220 and the pressure-sensitive device 800 located there. The pressure-sensitive device 800 sends a second signal to the control device 500, which then issues a warning command, causing the indicator light 600 to light up, turn off, or change color. However, when the lower end (tip portion) of the puncture needle 220 has completely penetrated the chest wall, since it has detached from the chest wall, no pressure is felt, and no second signal is sent. The control device 500 does not detect the first signal, and the control device 500 changes the light pattern of the indicator light 600. For example, when the lower end (tip portion) of the puncture needle 220 is still against the chest wall, the control device 500 receives both the first and second signals simultaneously, at which point the control device 500 controls the indicator light 600 to emit a red light. When the lower end (tip portion) of the puncture needle 220 is still against the chest wall, the control device 500 emits a red light. When the lower end (the part where the needle tip is) penetrates the chest wall, the control device 500 cannot detect the first and second signals, and the control device 500 controls the indicator light 600 to emit a green light. Preferably, the light sensor 400 is closer to the lower end of the puncture needle 220 than the pressure sensor 800. Therefore, the optimized solution is as follows: when the lower end of the puncture needle 220 (the part where the needle tip is) where the light sensor 400 is located penetrates the chest wall, but the lower end of the puncture needle 220 (the part where the needle tip is) where the pressure sensor 800 is located has not yet penetrated the chest wall, the control device 500 cannot detect the first signal, but can detect the second signal. At this time, the control device 500 controls the indicator light 600 to emit an orange light, which can remind the operator that the tip of the puncture needle 220 has partially penetrated the chest wall. The operator needs to pay attention to reducing the applied force to avoid the puncture needle being pushed too deep under inertial force when penetrating the chest wall, which could damage the organs and blood vessels in the abdominal cavity, and further ensure the safety of the patient.

[0033] In this embodiment, the thoracentesis device further includes a second connecting cable 900. The puncture needle 220 has a second cable channel 224. The second connecting cable 900 is disposed within the second cable channel 224, and its two ends are respectively connected to the pressure-sensing device 800 and the control device 500. The second signal emitted by the pressure-sensing device 800 is transmitted to the control device 500 through the second connecting cable 900. By setting the second connecting cable 900 within the second cable channel 224, the second connecting cable 900 can be effectively protected, preventing damage during use and further ensuring product stability, while also ensuring the stability of the second signal transmission.

[0034] In this embodiment, the lower end of the puncture needle 220 is provided with a second receiving groove 225, and the pressure-sensitive device 800 is disposed within the second receiving groove 225, with the pressure-sensitive device 800 being approximately flush with the outer surface of the puncture needle 220. This structural arrangement ensures that the pressure-sensitive device 800 is approximately flush with the outer surface of the puncture needle 220, guaranteeing a smooth and stable insertion of the puncture needle 220 into the chest wall. This prevents the protruding pressure-sensitive device 800 or the sidewall edge of the second receiving groove 225 from scraping against the chest wall tissue, ensuring product stability and reducing damage to the patient's chest wall tissue.

[0035] In this embodiment, the needle handle 210 includes a base 211 and a cover plate 212. The base 211 is connected to the upper end of the puncture needle 220, and the cover plate 212 is connected to and covers the base 211, forming a receiving space 213 between the base 211 and the cover plate 212. The control device 500 is disposed within the receiving space 213. With the above structure, when assembling the product, the control device 500 is first placed in the slot on the base 211, and the cover plate 212 is connected to the base 211 and covers the slot, forming a sealed receiving space 213. This effectively protects the control device 500 and extends the product's service life. The cover plate 212 is at least partially transparent or translucent, and an indicator light 600 is connected to the upper surface of the control device 500, ensuring that the light emitted by the indicator light 600 can be projected along the transparent or translucent portion of the cover plate 212, allowing the operator to directly understand the insertion status of the puncture device through the light and its changes.

[0036] In this embodiment, the cannula assembly 100 includes a limiting platform 110, an insertion tube 120, an air supply tube 130, and a limiting airbag 140. The limiting platform 110 is connected to the upper end of the insertion tube 120. The puncture channel 121 passes through the limiting platform 110 and the insertion tube 120. An air guiding channel 101 is provided in the side wall of the insertion tube 120 and inside the limiting platform 110. The air supply tube 130 is connected to the limiting platform 110 and communicates with the air guiding channel 101. The limiting airbag 140 is connected to the lower part of the insertion tube 120 and communicates with the air guiding channel 101. With the above-described structure, when the puncture is performed, the limiting platform 110 abuts against the lower surface of the base 211, allowing the force exerted by the operator on the needle handle 210 to be better transmitted to the limiting platform 110 and the insertion tube 120. This allows the insertion tube 120 to be inserted into the chest wall along with the puncture needle 220. The air in the limiting balloon 140 is expelled, its volume shrinks, and the limiting balloon 140 adheres tightly to the outer wall of the insertion tube 120. As the insertion tube 120 passes through the chest wall along the puncture channel of the puncture needle 220, the air in the limiting balloon 140 is expelled, causing it to shrink. After the puncture is completed, the puncture assembly 200 can be removed, leaving the cannula assembly 100 inside the chest cavity wall. At this time, the limiting balloon 140 can be inflated through the air supply tube 130 and the air channel 101, causing the limiting balloon 140 to expand. The inflated surface of the limiting balloon 140 abuts against the inner side of the chest cavity wall, preventing the cannula assembly 100 from falling off accidentally during the operation. The lower surface of the limiting table 110 can also abut against the patient's chest skin, preventing the insertion tube 120 from accidentally falling into the chest cavity, further ensuring safety.

[0037] In this embodiment, the outer wall of the insertion tube 120 is provided with an annular groove 122, and the limiting airbag 140 is annular, with the limiting airbag 140 partially embedded in the annular groove 122. Through the above structural design, the annular limiting airbag 140, after inflation, can more evenly abut against the inner side of the chest wall, resulting in uniform force distribution on the product; while the annular groove 122 can effectively accommodate the deflated limiting airbag 140, allowing the insertion tube 120 containing the limiting airbag 140 to more smoothly pass through the chest wall along the puncture channel of the puncture needle 220 during the puncture procedure.

[0038] In this embodiment, the air supply pipe 130 is further provided with an air valve 131, which is used to open or close the air supply pipe 130. With the above structure, the air supply pipe 130 is connected to an external air supply device, and the operator can open or close the gas passage using the air valve 131, making operation convenient. The air valve 131 is a commonly used air valve in the prior art and is not the focus of this invention; therefore, it will not be described in detail here.

[0039] In this embodiment, a plurality of elastic sealing valves 150 are provided on the inner wall of the puncture channel 121. Each elastic sealing valve 150 converges towards the center and overlaps with each other to ensure the airtightness of the puncture channel 121 when the insert is pulled out, thus preventing gas from flowing into or out of the pleural cavity. When the puncture needle 220 or the aspiration tube is inserted into the puncture channel 121, the elastic sealing valves 150 are tightly attached to the outer surface of the puncture needle 220 or the aspiration tube to ensure a tight seal.

Claims

1. A thoracentesis apparatus, characterized in that, include: A cannula assembly (100) having a puncture channel (121). The puncture assembly (200) includes a needle handle (210) and a puncture needle (220), the needle handle (210) being connected to the upper end of the puncture needle (220), and the puncture needle (220) being slidably inserted into the puncture channel (121); A light-emitting component (300) is connected to the puncture needle (220), and the light emitted by the light-emitting component (300) is projected outward from the light projection part (301) at the lower end of the puncture needle (220); A light sensor (400) is disposed at the lower end of the puncture needle (220), and a light shield (410) is provided between the light sensor (400) and the light projection part (301). The light sensor (400) is used to detect the light scattered by the chest wall and emit a first signal accordingly. A control device (500) is connected to the needle handle (210), and a light sensor (400) is electrically connected to the control device (500). The control device (500) is used to detect the first signal and send a reminder command to the indicator light (600) according to whether the first signal is received, and control the indicator light (600) to light up or turn off or change color.

2. The thoracentesis apparatus according to claim 1, characterized in that, The light-emitting component (300) includes a light-emitting element (310) and an optical fiber (320). The puncture needle (220) is provided with an optical fiber channel (221). The light-emitting element (310) is connected to the control device (500). The optical fiber (320) is disposed in the optical fiber channel (221). The two ends of the optical fiber (320) are respectively connected to the light-emitting element (310) and the light projection part (301) to conduct the light emitted by the light-emitting element (310) to the light projection part (301).

3. The thoracentesis apparatus according to claim 1, characterized in that, The thoracentesis device also includes a first connecting cable (700), and the puncture needle (220) is provided with a first cable channel (222). The first connecting cable (700) is disposed in the first cable channel (222), and its two ends are respectively connected to the photosensitive device (400) and the control device (500). The first signal emitted by the photosensitive device (400) is transmitted to the control device (500) through the first connecting cable (700).

4. The thoracentesis apparatus according to claim 1, characterized in that, The lower end of the puncture needle (220) is provided with a first receiving groove (223), the light sensor (400) and the light shield (410) are disposed in the first receiving groove (223), and the light sensor (400) is approximately flush with the outer surface of the puncture needle (220).

5. The thoracentesis apparatus according to claim 1, characterized in that, The thoracentesis apparatus also includes a pressure-sensing device (800), which is electrically connected to the control device (500). The pressure-sensing device (800) is used to detect whether the thoracic wall is pressing against the part of the puncture needle (220) where the pressure-sensing device (800) is located, and emits a second signal. The control device (500) detects the first signal and the second signal, and issues a reminder command to the indicator light (600) according to whether the first signal and / or the second signal is received, and controls the indicator light (600) to light up or turn off or change color.

6. The thoracentesis apparatus according to claim 5, characterized in that, The thoracentesis device also includes a second connecting cable (900). The puncture needle (220) is provided with a second cable channel (224). The second connecting cable (900) is disposed in the second cable channel (224) and its two ends are respectively connected to the pressure sensing device (800) and the control device (500). The second signal emitted by the pressure sensing device (800) is transmitted to the control device (500) through the second connecting cable (900).

7. The thoracentesis apparatus according to claim 6, characterized in that, The lower end of the puncture needle (220) is provided with a second receiving groove (225), and the pressure sensing device (800) is disposed in the second receiving groove (225), and the pressure sensing device (800) is approximately flush with the outer surface of the puncture needle (220).

8. The thoracentesis apparatus according to claim 1, characterized in that, The needle handle (210) includes a base (211) and a cover plate (212). The base (211) is connected to the upper end of the puncture needle (220), and the cover plate (212) is connected to and covers the base (211). A receiving space (213) is formed between the base (211) and the cover plate (212), and the control device (500) is disposed in the receiving space (213).

9. The thoracentesis apparatus according to claim 1, characterized in that, The cannula assembly (100) includes a limiting platform (110), an insertion tube (120), an air supply tube (130), and a limiting airbag (140). The limiting platform (110) is connected to the upper end of the insertion tube (120). The puncture channel (121) passes through the limiting platform (110) and the insertion tube (120). An air guide channel (101) is provided on the side wall of the insertion tube (120) and inside the limiting platform (110). The air supply tube (130) is connected to the limiting platform (110) and communicates with the air guide channel (101). The limiting airbag (140) is connected to the lower part of the insertion tube (120) and communicates with the air guide channel (101).

10. The thoracentesis apparatus according to claim 9, characterized in that, The outer wall of the insertion tube (120) is provided with an annular groove (122), the limiting airbag (140) is annular, and the limiting airbag (140) is partially embedded in the annular groove (122).

Images