A thoracentesis device

Abstract

The present invention provides a thoracic puncture device, which relates to the technical field of medical devices. It includes a fixed bracket, and the fixed bracket includes a positioning side plate. A movable positioning plate is horizontally slidably installed at the front end of the positioning side plate. An adjusting positioning frame is longitudinally rotatably installed at the front end of the movable positioning plate. The adjusting positioning frame includes a rotating base, and a pair of clamping discs are horizontally rotatably installed on both sides of the top of the rotating base. A puncture and drainage needle is clamped between the balls on the inner sides of the two clamping discs. The puncture and drainage needle includes a puncture needle tube, a sliding support tube is slidably installed along the axis inside the puncture needle tube, a puncture needle head is fixedly installed at the front end of the sliding support tube, and a sliding transmission tube is slidably installed along the axis inside the sliding support tube. In the present invention, the retractable puncture needle head can more comprehensively and effectively clean the effusion in the patient's thoracic cavity; in the present invention, the two channels inside the sliding transmission tube are respectively used for liquid drainage and drug transmission, which can avoid the backflow of residual liquid medicine caused by sharing the same syringe for liquid drainage and drug infusion.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly relates to a thoracentesis device. Background Art

[0002] Thoracentesis is a commonly used diagnostic and therapeutic method in clinical pulmonary medicine. Thoracentesis usually involves the operation of inserting a disinfected puncture needle through the skin tissue, intercostal tissue, and parietal pleura into the pleural cavity, extracting the effusion in the pleural cavity for detection or extracting the excess effusion for treating the patient, or delivering drugs through the puncture needle inserted into the pleural cavity for treatment.

[0003] However, the existing puncture needles can only perform a single operation in either extracting effusion or delivering drugs, resulting in a longer treatment process. At the same time, the puncture needle cannot move within the chest cavity, causing local effusion to be unable to be smoothly extracted.

[0004] Based on this, the present invention provides a thoracentesis device. Summary of the Invention

[0005] In view of the above technical problems, the present invention provides a thoracentesis device, including a fixed bracket. The fixed bracket includes a positioning side plate. An activity positioning plate is horizontally slidably installed at the front end of the positioning side plate. An adjustment positioning frame is longitudinally rotatably installed at the front end of the activity positioning plate. The adjustment positioning frame includes a rotating base. A pair of clamping discs are horizontally rotatably installed on both sides of the top of the rotating base. A plurality of support balls are rotatably installed inside the clamping discs. A puncture and fluid extraction needle is clamped between the balls on the inner sides of the two clamping discs. The puncture and fluid extraction needle includes a puncture needle tube. A sliding support tube is slidably installed along the axis inside the puncture needle tube. A puncture needle head is fixedly installed at the front end of the sliding support tube. A transmission hole is provided on the puncture needle head. An annular support frame is fixedly installed at the front end of the inner wall of the transmission hole of the puncture needle head. The shape of the annular support frame is an obliquely cut ring, and the inclination angle is the same as the top of the puncture needle head. A thread is provided at the rear end of the sliding support tube. A sliding transmission tube is slidably installed along the axis inside the sliding support tube. A transmission chamber is provided at the top of the sliding transmission tube. A transmission port is provided on the back of the transmission chamber at the top of the sliding transmission tube. A baffle is provided inside the sliding transmission tube. A needle hole baffle is fixedly installed at the top of the sliding transmission tube. The needle hole baffle is an inclined elliptical baffle, and the inclination angle is the same as the top of the puncture needle head. The bottom of the needle hole baffle is in contact and cooperation with the annular support frame. A flow limiting valve core is rotatably installed along the axis in the transmission chamber at the top end of the sliding transmission tube. A torsion spring is fixedly installed between the flow limiting valve core and the sliding transmission tube.

[0006] Further, a lever is fixedly installed on the outer wall of the flow limiting valve core. The lever is installed at the symmetry center line position of the flow limiting valve core. An adjustment plate is fixedly installed on the inner wall of the needle hole baffle. The lever on the outer wall of the flow limiting valve core is in contact and cooperation with the adjustment plate on the inner wall of the needle hole baffle.

[0007] Further, the baffle in the sliding transfer tube divides the inner wall of the sliding transfer tube into two channels. The two channels inside the sliding transfer tube communicate with the transfer bin at the top of the sliding transfer tube, and the current-limiting valve core is in contact and cooperation with the top of the inner channel of the sliding transfer tube.

[0008] Further, a first adjusting handle is rotatably installed along the axis at the rear end of the driving gear rod, and a second adjusting handle is rotatably installed at the rear end of the first adjusting handle. The first adjusting handle cooperates with the threaded lead screw on the sliding support tube. The rear end of the sliding transfer tube is provided with gear threads. A driving gear rod is horizontally rotatably installed on the outer circumference of the rear end of the puncture needle tube. The driving gear rod meshes with the gear threads at the rear end of the sliding transfer tube. The inner ring of the second adjusting handle is provided with gear threads, and the gear threads on the inner ring of the second adjusting handle mesh with the driving gear rod.

[0009] Further, an outer tube connector is fixedly installed at the bottom of the puncture needle tube, a support rigid tube is fixedly installed at the bottom of the puncture needle tube, an outer transfer tube is fixedly installed on the inner wall of the rear end of the support rigid tube, and a soft connecting tube is fixedly installed between the outer transfer tube and the outer tube connector.

[0010] Further, an adjusting rotating rod is horizontally rotatably installed at the top of the positioning side plate, and a screw rod is fixedly installed on the adjusting rotating rod. A rack plate is fixedly installed at the rear end of the movable positioning plate. The rack plate is horizontally slidably installed in the positioning side plate, and the rack plate is in worm gear cooperation with the screw rod on the adjusting rotating rod.

[0011] Further, a plurality of first fixed suction cups are fixedly installed at the bottom of the positioning side plate, a first air extraction rod is fixedly installed at the top of the positioning side plate, and the first air extraction rod communicates with the first fixed suction cups. A second fixed suction cup is fixedly installed at the bottom of the movable positioning plate, and a second air extraction rod is fixedly installed at the top of the movable positioning plate. The second air extraction rod communicates with the second fixed suction cups.

[0012] Further, positioning teeth are fixedly installed on both sides of the top of the rotating base. A U-shaped clamping plate is horizontally rotatably installed on the top of the rotating base. Adjusting pressure rods are fixedly installed on the inner walls of both sides of the U-shaped clamping plate. The adjusting pressure rods are rotatably installed outside the clamping disc. A pair of positioning rods are slidably installed in the radial direction outside the clamping disc. A compression spring is fixedly installed between the bottom of the positioning rod and the clamping disc. The positioning rod is in contact and cooperation with the positioning teeth. A trapezoidal key is fixedly installed outside the clamping disc. The inner wall of the adjusting pressure rod is a conical surface, and the inclined surface of the trapezoidal key on the outside of the positioning rod is in contact with the inner wall of the adjusting pressure rod.

[0013] Further, partitions are fixedly installed and fixedly connected inside both the soft connecting tube and the front half part of the outer transfer tube. The partition inside the soft connecting tube is fixedly connected to the baffle inside the sliding transfer tube.

[0014] The beneficial effects of the present invention compared with the prior art are as follows: (1) The retractable puncture needle of the present invention enables the syringe to swing when inserted into the patient's chest cavity without piercing the tissues inside the patient's body, and can more comprehensively and effectively clean the effusion in the patient's chest cavity; (2) The present invention can control the opening or closing of the transmission hole at the top of the puncture needle through the sliding transmission tube and the needle hole baffle, which can prevent the human tissues remaining in the transmission hole from blocking the exhaust channel when the puncture needle is inserted into the patient's body, making the exhaust process smoother and more successful; (3) The present invention respectively conducts liquid drainage and drug transmission through two channels inside the sliding transmission tube, which can avoid the backflow of residual liquid medicine caused by sharing the same syringe for liquid drainage and drug infusion, and at the same time avoid frequent syringe replacement to reduce the discomfort of the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic top view of the present invention.

[0016] Figure 2 It is a schematic side view of the present invention.

[0017] Figure 3 It is a schematic overall view of the present invention.

[0018] Figure 4 It is a schematic bottom view of the overall structure of the present invention.

[0019] Figure 5 It is a schematic semi-sectional view of the puncture and drainage needle of the present invention.

[0020] Figure 6 It is a schematic overall view of the sliding support tube of the present invention.

[0021] Figure 7 It is a schematic semi-sectional view of the sliding support rod of the present invention.

[0022] Figure 8 It is a schematic overall view of the sliding transmission tube of the present invention.

[0023] Figure 9 It is a schematic assembly view of the sliding support tube of the present invention.

[0024] Figure 10 It is a schematic assembly view of the adjustment and positioning frame of the present invention.

[0025] Figure 11 It is Figure 4 The enlarged schematic view at A1 in

[0026] Figure 12 It is Figure 7 The enlarged schematic view at B1 in

[0027] Figure 13 It is Figure 8 The enlarged schematic view at C1 in

[0028] Figure 14 is Figure 10 The enlarged structural schematic diagram at D1 in the figure.

[0029] Reference numerals: 1 - fixed bracket; 2 - puncture and aspiration needle; 3 - adjustment and positioning bracket; 101 - positioning side plate; 102 - first fixed suction cup; 103 - first air extraction rod; 104 - adjustment rotating rod; 105 - movable positioning plate; 106 - second air extraction rod; 107 - second fixed suction cup; 108 - rack plate; 201 - puncture needle tube; 202 - first adjustment handle; 203 - second adjustment handle; 204 - support rigid tube; 205 - outer transmission tube; 206 - soft connecting tube; 207 - puncture needle tip; 208 - sliding support tube; 209 - sliding transmission tube; 210 - transmission gear rod; 211 - annular support frame; 212 - flow limiting valve core; 213 - needle hole baffle; 214 - outer tube connector; 301 - rotating base; 302 - U-shaped clamping plate; 303 - adjustment pressure rod; 304 - positioning tooth; 305 - clamping disc; 306 - positioning rod. Detailed implementation manners

[0030] The technical solution provided by the present invention will be further described below in conjunction with the accompanying drawings and according to the detailed implementation manners.

[0031] Such as Figures 1 to 14As shown in the figure, a thoracentesis device includes a fixed bracket 1. The fixed bracket 1 includes a positioning side plate 101. A movable positioning plate 105 is horizontally slidably installed at the front end of the positioning side plate 101. An adjusting positioning frame 3 is longitudinally rotatably installed at the front end of the movable positioning plate 105. The adjusting positioning frame 3 includes a rotating base 301. A pair of clamping discs 305 are horizontally rotatably installed on both sides of the top of the rotating base 301. A plurality of support balls are rotatably installed inside the clamping discs 305. A puncture and aspiration needle 2 is clamped between the balls inside the two clamping discs 305. An adjusting rotating rod 104 is horizontally rotatably installed at the top of the positioning side plate 101. A screw rod is fixedly installed on the adjusting rotating rod 104. A rack plate 108 is fixedly installed at the rear end of the movable positioning plate 105. The rack plate 108 is horizontally slidably installed inside the positioning side plate 101. The rack plate 108 is in a worm and gear fit with the screw rod on the adjusting rotating rod 104, which is used to adjust the sliding position of the movable positioning plate 105 on the positioning side plate 101, facilitating adjustment and fixation. A plurality of first fixed suction cups 102 are fixedly installed at the bottom of the positioning side plate 101. A first air extraction rod 103 is fixedly installed at the top of the positioning side plate 101. The first air extraction rod 103 is communicated with the first fixed suction cups 102, which is used to extract the air between the first fixed suction cups 102 and the patient's skin. A second fixed suction cup 107 is fixedly installed at the bottom of the movable positioning plate 105. A second air extraction rod 106 is fixedly installed at the top of the movable positioning plate 105. The second air extraction rod 106 is communicated with the second fixed suction cups 107, which is used to extract the air between the second fixed suction cups 107 and the patient's skin. The first fixed suction cups 102 and the second fixed suction cups 107 are used to adsorb the patient's skin, fixing the device on the patient's chest cavity.

[0032] As Figures 1 to 14 shown in the figure, positioning teeth 304 are fixedly installed on both sides of the top of the rotating base 301. A U-shaped clamping plate 302 is horizontally rotatably installed on the top of the rotating base 301. Adjusting pressure rods 303 are fixedly installed on the inner walls of both sides of the U-shaped clamping plate 302. The adjusting pressure rods 303 are rotatably installed outside the clamping discs 305. A pair of positioning rods 306 are slidably installed in the radial direction outside the clamping discs 305. A compression spring is fixedly installed between the bottom of the positioning rods 306 and the clamping discs 305. The positioning rods 306 are in contact and cooperation with the positioning teeth 304. Trapezoidal keys are fixedly installed outside the clamping discs 305. The inner wall of the adjusting pressure rod 303 is a conical surface. The inclined surface of the trapezoidal key outside the positioning rod 306 is in contact and cooperation with the inner wall of the adjusting pressure rod 303. By pressing both sides of the U-shaped clamping plate 302 to push the adjusting pressure rods 303 to slide inside the clamping discs 305, through the cooperation between the conical surface inside the clamping discs 305 and the trapezoidal keys on the clamping discs 305, the positioning rods 306 are driven to slide inside the clamping discs 305 and no longer cooperate with the positioning teeth 304, enabling the clamping discs 305 to rotate on the top of the rotating base 301, which is used to adjust the rotation angle of the puncture and aspiration needle 2, facilitating the fixation and adjustment of the angle when the puncture and aspiration needle 2 penetrates.

[0033] As Figures 1 to 14As shown, the puncture and aspiration needle 2 includes a puncture needle tube 201. A sliding support tube 208 is slidably installed along the axis inside the puncture needle tube 201. A puncture needle tip 207 is fixedly installed at the front end of the sliding support tube 208. A transmission hole is provided on the puncture needle tip 207. The sliding support tube 208 is used to pierce the skin of the patient, and then retracts into the puncture needle tube 201 after piercing into the patient's chest cavity, so that the puncture and aspiration needle 2 can shake in the patient's chest cavity without scratching the tissues inside the patient's body, facilitating the puncture and aspiration needle 2 to drain the accumulated fluid or air in the dead corners inside the patient's chest cavity. A thread is provided at the rear end of the sliding support tube 208. A first adjustment handle 202 is rotatably installed along the axis at the rear end of the transmission gear rod 210. The first adjustment handle 202 is matched with the threaded screw rod on the sliding support tube 208. By rotating the first adjustment handle 202, the telescopic position of the sliding support tube 208 inside the puncture needle tube 201 can be adjusted.

[0034] As Figures 1 to 14 shown, a ring-shaped support frame 211 is fixedly installed at the front end of the inner wall of the transmission hole of the puncture needle tip 207. The shape of the ring-shaped support frame 211 is an obliquely cut ring, and the inclination angle is the same as the top of the puncture needle tip 207. A sliding transmission tube 209 is slidably installed along the axis inside the sliding support tube 208. The sliding transmission tube 209 is used to discharge the air or accumulated fluid in the patient's chest cavity, and at the same time used to transmit drugs into the patient's chest cavity. A transmission chamber is provided at the top of the sliding transmission tube 209. A transmission port is provided on the back of the transmission chamber at the top of the sliding transmission tube 209. The transmission port is the common inlet and outlet for exhausting air and transmitting liquid medicine. A baffle is provided inside the sliding transmission tube 209 for dividing the inside of the sliding transmission tube 209 into two pipelines for transmitting liquid medicine and exhausting air. A pinhole baffle 213 is fixedly installed at the top of the sliding transmission tube 209. The pinhole baffle 213 is an inclined elliptical baffle, and the inclination angle is the same as the top of the puncture needle tip 207, used to block the transmission hole inside the puncture needle tip 207 to prevent foreign objects from adhering to the exhaust channel when the puncture needle tip 207 pierces into the patient's chest cavity and blocking the discharge of accumulated fluid or gas.

[0035] As Figures 1 to 14As shown in the figure, the bottom of the pinhole baffle 213 is in contact and cooperation with the annular support frame 211. A flow-limiting valve core 212 is rotatably installed along the axis in the transfer bin at the top end of the sliding transfer pipe 209. A torsion spring is fixedly installed between the flow-limiting valve core 212 and the sliding transfer pipe 209. The flow-limiting valve core 212 is in contact and cooperation with the top of the internal channel of the sliding transfer pipe 209 for adjusting the opening or closing of the two channels. A lever is fixedly installed on the outer wall of the flow-limiting valve core 212. The lever is installed at the symmetrical center line position of the flow-limiting valve core 212. An adjusting plate is fixedly installed on the inner wall of the pinhole baffle 213. The lever on the outer wall of the flow-limiting valve core 212 is in contact and cooperation with the adjusting plate on the inner wall of the pinhole baffle 213 for controlling the rotation of the flow-limiting valve core 212 in the transfer bin at the top of the sliding transfer pipe 209. The rear end of the first adjusting handle 202 is rotatably installed with a second adjusting handle 203. The rear end of the sliding transfer pipe 209 is provided with gear teeth. A transmission gear rod 210 is horizontally rotatably installed on the outer circle at the rear end of the puncture needle tube 201. The transmission gear rod 210 is engaged with the gear teeth at the rear end of the sliding transfer pipe 209. The inner circle of the second adjusting handle 203 is provided with gear teeth. The gear teeth on the inner circle of the second adjusting handle 203 are engaged with the transmission gear rod 210. By rotating the second adjusting handle 203, the transmission gear rod 210 is driven to rotate on the puncture needle tube 201. The rotation of the transmission gear rod 210 drives the sliding transfer pipe 209 to rotate in the sliding support pipe 208. At the same time, through the contact and cooperation between the bottom of the pinhole baffle 213 and the top of the annular support frame 211, the pinhole baffle 213 is driven to slide along the inclined surface at the top of the annular support frame 211 towards the top end direction of the puncture needle head 207, so that the sliding transfer pipe 209 slides out a certain distance outside the puncture needle head 207, and the transfer port at the rear end of the transfer bin at the top of the sliding transfer pipe 209 is exposed. At the same time, when the sliding transfer pipe 209 rotates, the adjusting plate on the inner wall of the annular support frame 211 contacts the lever on the outer wall of the flow-limiting valve core 212, driving the flow-limiting valve core 212 to rotate reversely in the transfer bin at the top of the sliding transfer pipe 209, thereby closing the corresponding channel inside the sliding transfer pipe 209, so as to control the device to exhaust air or transfer drugs.

[0036] As Figures 1 to 14 shown, an outer pipe connector 214 is fixedly installed at the bottom of the puncture needle tube 201. A support rigid pipe 204 is fixedly installed at the bottom of the puncture needle tube 201. An outer transfer pipe 205 is fixedly installed on the inner wall at the rear end of the support rigid pipe 204. A soft connecting pipe 206 is fixedly installed between the outer transfer pipe 205 and the outer pipe connector 214. A partition is fixedly installed and connected inside both the soft connecting pipe 206 and the front half part of the inner part of the outer transfer pipe 205. The partition inside the soft connecting pipe 206 is fixedly connected to the baffle inside the sliding transfer pipe 209. The soft connecting pipe 206 is used to offset the torsional stress generated between the sliding transfer pipe 209 and the outer transfer pipe 205 when the sliding transfer pipe 209 rotates in the transmission gear rod 210, preventing the sliding transfer pipe 209 from being damaged.

[0037] Working principle: When performing thoracic puncture and drainage treatment on a patient, firstly, the positioning side plate 101 is attached to the side of the patient's chest, and the first air pumping rod 103 is pulled to make the first fixed suction cup 102 adsorbed on the patient's body surface, and then the adjusting rod 104 is rotated to adjust the sliding position of the movable positioning plate 105 on the positioning side plate 101, and the insertion position of the puncture and liquid extraction needle 2 is adjusted, and then the second air pumping rod 106 is pulled to make the second fixed suction cup 107 adsorbed on the patient's chest surface to fix the insertion position;

[0038] After that, the insertion angle of the puncture and liquid extraction needle 2 is adjusted by pressing the two sides of the U-shaped clamping plate 302 as needed. After the angle is fixed, the first adjusting handle 202 is rotated to drive the sliding support tube 208 to slide in the puncture needle tube 201, so that the puncture needle 207 is extended to the outside of the puncture needle tube 201, so that the puncture needle tube 201 can be smoothly inserted into the patient's chest cavity. After reaching the required position, the first adjusting handle 202 is pulled on the puncture needle tube 201 for unidirectional rotation, so that the puncture needle 207 is retracted into the puncture needle tube 201 to prevent the puncture needle 207 from damaging the tissue in the patient's body. Then, the second adjusting handle 203 is rotated to drive the sliding transmission tube 209 to rotate in the sliding support tube 208, so that the sliding transmission tube 209 extends out of the top of the puncture needle 207, and the waste gas or effusion in the patient is extracted through the transmission port at the top of the sliding transmission tube 209. At the same time, the angle of the puncture needle tube 201 can be adjusted at any time to treat the effusion in the dead corner of the patient's chest cavity;

[0039] After the accumulated fluid is discharged, the second adjusting handle 203 is rotated in the opposite direction to make the flow limiting valve core 212 rotate in the opposite direction in the sliding transmission tube 209, thereby opening the drug discharge channel in the sliding transmission tube 209, and delivering the drug solution to the patient's chest cavity through the puncture needle tube 201 for treatment.

Claims

1. A thoracentesis device, comprising a fixed bracket (1), characterized in that, The fixed bracket (1) includes a positioning side plate (101). A movable positioning plate (105) is horizontally slidably installed at the front end of the positioning side plate (101). An adjusting positioning frame (3) is longitudinally rotatably installed at the front end of the movable positioning plate (105). The adjusting positioning frame (3) includes a rotating base (301). A pair of clamping discs (305) are horizontally rotatably installed on both sides of the top of the rotating base (301). A plurality of support balls are rotatably installed on the inner sides of the clamping discs (305). A puncture and fluid extraction needle (2) is clamped between the balls on the inner sides of the two clamping discs (305). The puncture and fluid extraction needle (2) includes a puncture needle tube (201). A sliding support tube (208) is slidably installed along the axis inside the puncture needle tube (201). A puncture needle tip (207) is fixedly installed at the front end of the sliding support tube (208). A transmission hole is provided on the puncture needle tip (207). An annular support frame (211) is fixedly installed at the front end of the inner wall of the transmission hole of the puncture needle tip (207). The annular support frame (211) is in the shape of an obliquely cut ring, and the inclination angle is the same as that of the top of the puncture needle tip (207). A thread is provided at the rear end of the sliding support tube (208). A sliding transmission tube (209) is slidably installed along the axis inside the sliding support tube (208). A transmission chamber is provided at the top of the sliding transmission tube (209). A transmission port is provided on the back of the transmission chamber at the top of the sliding transmission tube (209). A baffle is provided inside the sliding transmission tube (209). A needle hole baffle (213) is fixedly installed at the top of the sliding transmission tube (209). The needle hole baffle (213) is an inclined elliptical baffle, and the inclination angle is the same as that of the top of the puncture needle tip (207). The bottom of the needle hole baffle (213) is in contact and cooperation with the annular support frame (211). A flow limiting valve core (212) is rotatably installed along the axis in the transmission chamber at the top end of the sliding transmission tube (209). A torsion spring is fixedly installed between the flow limiting valve core (212) and the sliding transmission tube (209); A dial rod is fixedly installed on the outer wall of the flow limiting valve core (212). The dial rod is installed at the symmetric center line position of the flow limiting valve core (212). An adjusting plate is fixedly installed on the inner wall of the needle hole baffle (213). The dial rod on the outer wall of the flow limiting valve core (212) is in contact and cooperation with the adjusting plate on the inner wall of the needle hole baffle (213) to control the rotation of the flow limiting valve core (212) in the transmission chamber at the top of the sliding transmission tube (209); The baffle inside the sliding transmission tube (209) divides the inner wall of the sliding transmission tube (209) into two channels. The two channels inside the sliding transmission tube (209) are communicated with the transmission chamber at the top of the sliding transmission tube (209). The flow limiting valve core (212) is in contact and cooperation with the top of the inner channel of the sliding transmission tube (209); A transmission gear rod (210) is rotatably mounted on the outer ring of the rear end of the puncture needle tube (201), a first adjustment handle (202) is rotatably mounted on the rear end of the transmission gear rod (210) along an axis, a second adjustment handle (203) is rotatably mounted on the rear end of the first adjustment handle (202), the first adjustment handle (202) cooperates with a threaded screw on a sliding support tube (208), a gear pattern is provided on the rear end of the sliding transmission tube (209), the transmission gear rod (210) meshes with the gear pattern on the rear end of the sliding transmission tube (209), the second adjustment handle (203) has a gear pattern on its inner ring, and the gear pattern on the inner ring of the second adjustment handle (203) meshes with the transmission gear rod (210).

2. The thoracic puncture device according to claim 1, wherein, An outer tube connector (214) is fixedly mounted on the bottom of the puncture needle tube (201), a supporting hard tube (204) is fixedly mounted on the bottom of the puncture needle tube (201), an outer transmission tube (205) is fixedly mounted on the inner wall of the rear end of the supporting hard tube (204), and a soft connection tube (206) is fixedly mounted between the outer transmission tube (205) and the outer tube connector (214).

3. The thoracic puncture device according to claim 1, characterized in that, An adjusting rod (104) is installed on the top of the positioning side plate (101) for transverse rotation, and a screw is fixedly installed on the adjusting rod (104). A rack plate (108) is fixedly installed on the rear end of the movable positioning plate (105). The rack plate (108) is installed in the positioning side plate (101) for transverse sliding. The rack plate (108) cooperates with the screw and worm on the adjusting rod (104).

4. A thoracentesis device according to claim 1, characterized in that, A plurality of first fixed suction cups (102) are fixedly mounted on the bottom of the positioning side plate (101), a first air suction rod (103) is fixedly mounted on the top of the positioning side plate (101), the first air suction rod (103) is connected to the first fixed suction cup (102), a second fixed suction cup (107) is fixedly mounted on the bottom of the movable positioning plate (105), a second air suction rod (106) is fixedly mounted on the top of the movable positioning plate (105), the second air suction rod (106) is connected to the second fixed suction cup (107).

5. The thoracic puncture device according to claim 1, characterized in that, Positioning teeth (304) are fixedly mounted on both sides of the top of the rotating base (301); a U-shaped clamping plate (302) is rotatably mounted on the top of the rotating base (301); adjusting pressure rods (303) are fixedly mounted on the inner walls of both sides of the U-shaped clamping plate (302); the adjusting pressure rods (303) are rotatably mounted on the outside of the clamping plate (305); a pair of positioning rods (306) are slidably mounted along the radial direction on the outside of the clamping plate (305); a compression spring is fixedly mounted between the bottom of the positioning rods (306) and the clamping plate (305); the positioning rods (306) are in contact with the positioning teeth (304); a trapezoidal key is fixedly mounted on the outside of the clamping plate (305); the inner wall of the adjusting pressure rod (303) is a conical surface; the inclined surface of the trapezoidal key on the outside of the positioning rod (306) is in contact with the inner wall of the adjusting pressure rod (303).

6. The thoracic puncture device according to claim 2, characterized in that, The interior of the soft connecting tube (206) and the interior of the front half of the external transmission tube (205) are both fixedly installed with partitions and are fixedly connected. The partition inside the soft connecting tube (206) is fixedly connected to the baffle inside the sliding transmission tube (209).

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