A puncture device and puncture needle applied to minimally invasive surgery or interventional treatment

Abstract

This invention relates to the technical field of puncture fixation, and discloses a puncture device and puncture needle for minimally invasive surgery or interventional treatment. One puncture device includes a suction cup, a mounting sleeve disposed on the upper end of the suction cup, and an adjustment unit disposed on the inner wall of the mounting sleeve. The adjustment unit includes an X-axis component disposed on the inner wall of the mounting sleeve. By setting the adjustment unit, after medical personnel determine the angle at which the puncture needle enters the human body using imaging technology, the angle of the support plate is adjusted through the X-axis and Y-axis components to ensure the correct angle of the puncture needle. Then, the fixing component releases the fixation of the puncture cannula and the puncture needle, allowing medical personnel to control the puncture needle to be directly inserted into the patient's body at the determined angle. The insertion hole limits the puncture cannula throughout the procedure, effectively preventing changes in the angle of the puncture needle during puncture from affecting subsequent treatment.

Description

Technical Field

[0001] This invention relates to the technical field of puncture fixation, and more particularly to a puncture device and puncture needle for use in minimally invasive surgery or interventional treatment. Background Technology

[0002] Aspiration is a minimally invasive technique that uses instruments such as needles to enter the body through the skin or natural cavities to achieve diagnostic or therapeutic purposes. It is widely used in various clinical departments and is an important part of minimally invasive surgery and interventional therapy. Its core characteristics are minimal trauma and relatively simple operation. It can complete a variety of medical procedures under precise positioning. During aspiration, the needle or related instruments are usually accurately delivered to the target site with the help of imaging technology. Diagnosis or treatment is achieved by aspirating fluid, obtaining tissue samples, and injecting drugs.

[0003] In current puncture procedures, medical staff guide the needle to the target site using imaging technology. However, the following problems still exist: During the puncture, medical staff perform the procedure manually, but manual puncture cannot maintain the stability and direction of the needle. If the medical staff's hand is unsteady or the force is uneven, the needle may deviate slightly. This deviation may affect the accuracy of the puncture, causing changes in the angle or position of the needle entering the target area, thus affecting the subsequent treatment effect. Especially when the puncture procedure is used for drainage, a deviation in the needle direction may prevent the proper drainage of internal fluid, requiring multiple attempts by medical staff to ensure proper drainage, which may cause unnecessary harm to the patient. Furthermore, because the drainage process is lengthy, medical staff need to fix the needle. However, current fixation methods may also cause the needle to deviate, affecting the subsequent drainage effect.

[0004] Meanwhile, traditional puncture needles have sharp edges at the transition zone where the bevel connects to the inner lumen. During the procedure, the medical instruments used with the puncture needle tend to bend from the center of the needle tube towards this connection point. Even slight movements of the instrument or the patient can easily cause the sharp edges to scrape against the instrument like a knife blade, resulting in damage to the instrument's coating or surface. This not only renders the instrument itself ineffective, but the resulting detached coating and metal / plastic debris can easily lead to surgical complications such as thrombosis or tissue inflammation. Increased operational resistance also increases the risk of damage to the instrument's structural integrity, potentially causing breakage and further increasing surgical risks. Furthermore, it can cause serious damage to human tissue; the sharp edges can easily cut the vascular endothelium or nerve fibers, significantly increasing the risk of surgical complications. Summary of the Invention

[0005] Given that existing technologies can cause needle deviation during manual puncture and needle deviation during drainage fixation, a puncture device and puncture needle for use in minimally invasive surgery or interventional treatment are proposed.

[0006] This application provides a puncture device and puncture needle for minimally invasive surgery or interventional treatment. The purpose is to: by setting an adjustment unit, after medical personnel determine the angle at which the puncture needle enters the human body through imaging technology, adjust the angle of the support plate through the X-axis and Y-axis components to ensure that the angle of the puncture needle is correct, release the fixation of the puncture cannula and puncture needle through the fixing component, so that medical personnel can control the puncture needle to be directly inserted into the patient's body at the determined angle, and limit the puncture cannula throughout the process, effectively avoiding the situation where the angle of the puncture needle changes during the puncture process and affects subsequent treatment, and fix the puncture needle in the patient's body again through the fixing component.

[0007] The technical solution of the present invention is: a puncture device for minimally invasive surgery or interventional treatment, including a suction cup, an installation sleeve disposed on the upper end of the suction cup, and an adjustment unit disposed on the inner wall of the installation sleeve, wherein the adjustment unit includes an X-axis component disposed on the inner wall of the installation sleeve;

[0008] The X-axis component includes adjusting rods disposed on the inner walls of both sides of the mounting sleeve, an X-axis ring disposed between the two adjusting rods, a sector gear disposed on one end of the adjusting rod, a control ring disposed on the upper end of the suction cup, and a tooth block assembly disposed on the upper end of the control ring. The lower ends of the sector gears respectively mesh with the corresponding tooth block assemblies.

[0009] A Y-axis component is installed on the inner wall of the X-axis ring. The Y-axis component includes rotating rods disposed on the inner walls of both sides of the X-axis ring, a Y-axis ring disposed between the two rotating rods, a mounting ring groove opened inside the X-axis ring, one end of each of the two rotating rods being located inside the mounting ring groove, a transmission gear disposed at one end of the rotating rod, a changing ring disposed on the inner wall of the X-axis ring, and two sets of tooth blocks disposed at the lower end of the changing ring. The transmission gear meshes with the corresponding sets of tooth blocks. Reading components are installed on the outer walls of both the control ring and the changing ring, and a fixing component is installed on the inner wall of the Y-axis ring.

[0010] Furthermore, the reading assembly includes a finger plate respectively disposed on the upper end of the control ring and the change ring, an index needle disposed on the side wall of the finger plate, an extension ring disposed on the outer wall of the X-axis ring, and a reading bar opened on the upper end of the extension ring and the suction cup, with the two index needles respectively located on the corresponding reading bars.

[0011] Furthermore, the fixing component includes a support plate disposed on the inner wall of the Y-axis ring, an insertion hole opened on the support plate, a puncture sleeve disposed inside the insertion hole, a puncture needle fixedly installed at the lower end of the puncture sleeve, and a limit element and an unlocking element installed inside the support plate.

[0012] Furthermore, the limiting element includes an installation groove inside the support plate, sliding grooves on both sides inside the installation groove, sliding blocks inside the sliding grooves, and limiting wheels between the sliding blocks. The distance between the two limiting wheels is slightly smaller than the diameter of the puncture cannula, and rubber rings are fitted on the limiting wheels.

[0013] Furthermore, the unlocking element includes a connecting plate disposed between two corresponding sliding blocks, a reset plate disposed at one end of the connecting plate, a spring rod disposed on the reset plate and the inner wall of the mounting groove, a compression hole opened on the connecting plate, a control rod that is sealed and slides through and disposed at the upper end of the bearing plate, a trapezoidal block disposed at the lower end of the control rod, a reset disc disposed at the upper end of the control rod, and a reset spring disposed between the reset disc and the outer wall of the bearing plate.

[0014] Furthermore, an air suction tube is fixedly installed at the upper end of the suction cup, and the suction cup is used to fix the installation sleeve to the patient's skin surface.

[0015] Furthermore, a puncture needle for use in minimally invasive surgery or interventional treatment is provided, wherein the connection between the bevel of the puncture needle and the inner lumen is configured as a transition structure, the bevel of the puncture needle is provided with a distal edge treatment structure, and the edge of the transition structure of the puncture needle is provided with a proximal edge treatment structure.

[0016] The beneficial effects of this invention are:

[0017] 1. By setting up an adjustment unit, medical staff can first determine the angle at which the puncture needle needs to enter the patient's body through imaging technology, and then adjust the carrier plate through the X-axis and Y-axis components. The X-axis and Y-axis work together to ensure that the puncture needle can be inserted into the patient's body at any angle, which can better improve the quality of puncture needle insertion and improve the subsequent treatment effect.

[0018] 2. By setting up suction cups, medical staff can quickly attach the installation sleeve to the area around the patient that needs to be punctured. Then, the puncture angle of the puncture needle can be adjusted by the adjustment unit to ensure that the puncture needle can enter the human body at any angle while fixing and limiting the puncture needle. When the puncture needle is used to drain the patient, better fixation can effectively improve the quality and efficiency of drainage.

[0019] 3. By setting a fixing component, when medical staff adjust the angle of the puncture needle, the puncture needle is limited in the vertical direction to prevent movement of the puncture needle during the angle adjustment process. At the same time, after the angle adjustment is completed, medical staff can release the limitation of the puncture needle through the unlocking element, so that the puncture needle can move vertically and be inserted into the human body. During the movement, the angle of the puncture needle is limited, thereby ensuring that the puncture needle always enters the patient's body at a specific angle, improving the puncture effect and quality.

[0020] 4. Through reasonable improvements to the puncture needle, the safety and compatibility of the puncture needle are significantly enhanced, protecting the instruments and human tissue during the puncture process. When used with a guidewire, this design reduces sharp friction between the needle and the guidewire's coating, preventing the coating from being peeled off and remaining in the body. This protects the guidewire from scratches or damage, preventing the wire from warping and affecting its function. When used with a catheter, this design protects the catheter from scratches or dents, minimizing resistance during surgery and preventing the accumulation of inconspicuous plastic debris in the body. Attached Figure Description

[0021] Figure 1 This is a first-view three-dimensional structural diagram of the device of the present invention;

[0022] Figure 2 This is a second-view three-dimensional structural diagram of the present invention;

[0023] Figure 3 This is a top view schematic diagram of the structure of the present invention;

[0024] Figure 4 for Figure 3 Enlarged structural diagram at point A in the middle;

[0025] Figure 5 This is a schematic diagram of the X-axis component structure of the present invention;

[0026] Figure 6 This is a partial cross-sectional view of the X-axis ring structure of the present invention;

[0027] Figure 7 This is a schematic diagram of the fixed component structure of the present invention;

[0028] Figure 8 This is a schematic diagram of the internal structure of the support plate of the present invention;

[0029] Figure 9 This is a schematic diagram of the puncture needle tip structure of the present invention;

[0030] Figure 10 for Figure 9 Enlarged structural diagram at point B.

[0031] In the picture:

[0032] 1. Suction cup; 2. Mounting sleeve; 101. Adjusting rod; 102. X-axis ring; 103. Sector gear; 104. Control ring; 105. Gear block assembly one; 201. Rotating rod; 202. Y-axis ring; 203. Mounting ring groove; 204. Transmission gear; 205. Changing ring; 206. Gear block assembly two; 301. Finger plate; 302. Index needle; 303. Extension ring; 401. Bearing plate; 402. Puncture sleeve 403. Pipe; 404. Mounting groove; 405. Sliding groove; 406. Sliding block; 407. Limiting wheel; 501. Connecting plate; 502. Reset plate; 503. Spring rod; 504. Control rod; 505. Trapezoidal block; 506. Reset disc; 507. Reset spring; 601. Suction pipe; 602. Puncture needle; 603. Transition structure; 604. Distal edge treatment structure; 605. Proximal edge treatment structure. Detailed Implementation

[0033] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0034] Example 1, referring to Figures 1-6 The first embodiment of the present invention provides a puncture device for minimally invasive surgery or interventional treatment, including a suction cup 1, an installation sleeve 2 fixedly installed on the upper end of the suction cup 1, and an adjustment unit installed on the inner wall of the installation sleeve 2. The adjustment unit includes an X-axis component installed on the inner wall of the installation sleeve 2.

[0035] The X-axis component includes adjusting rods 101 rotatably mounted on the inner walls of both sides of the mounting sleeve 2, an X-axis ring 102 fixedly mounted between the two adjusting rods 101, a sector gear 103 fixedly mounted on one end of the adjusting rods 101, a control ring 104 rotatably mounted on the upper end of the suction cup 1, and a gear block assembly 105 fixedly mounted on the upper end of the control ring 104. The lower ends of the sector gear 103 mesh with the corresponding gear block assembly 105.

[0036] A Y-axis component is installed on the inner wall of the X-axis ring 102. The Y-axis component includes rotating rods 201 rotatably mounted on the inner walls of both sides of the X-axis ring 102, a Y-axis ring 202 fixedly mounted between the two rotating rods 201, a mounting ring groove 203 formed inside the X-axis ring 102, one end of each of the two rotating rods 201 located inside the mounting ring groove 203, a transmission gear 204 fixedly mounted on one end of the rotating rod 201, a changing ring 205 rotatably mounted on the inner wall of the X-axis ring 102, and two toothed blocks 206 fixedly mounted on the lower end of the changing ring 205. The transmission gear 204 meshes with the corresponding toothed blocks 206. Reading components are installed on the outer walls of both the control ring 104 and the changing ring 205, and a fixing component is installed on the inner wall of the Y-axis ring 202. A suction tube 601 is fixedly mounted on the upper end of the suction cup 1, which is used to fix the mounting sleeve 2 to the patient's skin surface.

[0037] The reading assembly includes a finger plate 301 fixedly mounted on the upper end of the control ring 104 and the change ring 205, an index needle 302 fixedly mounted on the side wall of the finger plate 301, an extension ring 303 fixedly mounted on the outer wall of the X-axis ring 102, and reading bars opened on the upper end of the extension ring 303 and the suction cup 1. The two index needles 302 are respectively located on the corresponding reading bars.

[0038] Specifically, the adjustment unit is used to adjust the angle of the puncture needle 602. By rotating and adjusting the X-axis ring 102 and the Y-axis ring 202 respectively, the puncture needle 602 can enter the patient's body at any angle. The X-axis ring 102 rotates around the center of the adjusting rod 101, and the Y-axis ring 202 rotates around the axis of the rotating rod 201. Since the adjusting rod 101 and the rotating rod 201 are perpendicular to each other, once the medical staff determines the angle of the puncture needle 602, it can be inserted into the patient's body at any angle. Therefore, by setting up the adjustment unit, the medical staff can first determine the angle at which the puncture needle 602 needs to enter the patient's body through imaging technology, and then adjust the support plate 401 through the X-axis and Y-axis components. The X-axis and Y-axis work together to ensure that the puncture needle 602 can be inserted into the patient's body at any angle, which can better improve the quality of the puncture needle 602 and improve the subsequent treatment effect.

[0039] The suction cup 1 is used to attach the entire device to the skin surface around the area where the patient needs to be punctured, thus fixing the device to the patient's skin surface. This makes the device and the patient's skin essentially a single unit, allowing for better fixation. With the suction cup 1, medical staff can quickly attach the mounting sleeve 2 to the area around the patient where puncture is needed. Then, the puncture angle of the puncture needle 602 can be adjusted by the adjustment unit to ensure that the puncture needle 602 can enter the human body at any angle while being fixed and limited. When the puncture needle 602 is used for drainage, better fixation can effectively improve the quality and efficiency of drainage.

[0040] During use, medical staff attach the suction cup 1 to the skin surface around the area where the patient needs to be punctured. First, by observing the imaging equipment, they determine the angle at which the puncture needle 602 will puncture the patient's body. Then, by rotating the control ring 104, the control ring 104 drives the adjusting rod 101 to rotate via the toothed block assembly 105. The medical staff determines the rotation angle of the X-axis ring 102 by observing the position of the index needle 302 on the reading bar, thus completing the angle adjustment of the X-axis ring 102. Subsequently, the medical staff rotates the changing ring 205 at the upper end of the X-axis ring 102. During the rotation of the changing ring 205, the transmission gear 204 is driven to rotate via the toothed block assembly 206 at the lower end. The transmission gear 204 drives the Y-axis ring 202 to rotate via the rotating rod 201, thereby controlling the puncture needle 602 to be fixed on the support plate 401 at a certain angle.

[0041] Example 2, refer to Figures 7-8This is the second embodiment of the present invention, which differs from the first embodiment in that: the fixing assembly includes a support plate 401 fixedly installed on the inner wall of the Y-axis ring 202, an insertion hole opened on the support plate 401, a puncture sleeve 402 placed inside the insertion hole, a puncture needle 602 fixedly installed at the lower end of the puncture sleeve 402, and a limiting element and an unlocking element installed inside the support plate 401. The limiting element includes an installation groove 403 opened inside the support plate 401, sliding grooves 404 opened on both sides inside the installation groove 403, sliding blocks 405 slidably installed inside the sliding grooves 404, and limiting wheels 406 rotatably installed between the sliding blocks 405. The distance between the two limiting wheels 406 is slightly smaller than the diameter of the puncture sleeve 402, and a rubber ring is fitted on the limiting wheel 406. The unlocking element includes a connecting plate 501 fixedly installed between two corresponding sliding blocks 405, a reset plate 502 fixedly installed at one end of the connecting plate 501, a spring rod 503 fixedly installed on the inner wall of the reset plate 502 and the mounting groove 403, a compression hole opened on the connecting plate 501, a control rod 504 that is sealed and slidably installed through the upper end of the support plate 401, a trapezoidal block 505 fixedly installed at the lower end of the control rod 504, a reset disc 506 fixedly installed at the upper end of the control rod 504, and a reset spring 507 fixedly installed between the reset disc 506 and the outer wall of the support plate 401.

[0042] Specifically, by setting up a fixing component, when medical personnel adjust the angle of the puncture needle 602, the puncture needle 602 is limited in the vertical direction, preventing movement of the puncture needle 602 during the angle adjustment process. Simultaneously, after the angle adjustment is completed, medical personnel can release the limitation on the puncture needle 602 through an unlocking element, allowing the puncture needle 602 to move vertically and be inserted into the human body. Since the angle of the puncture needle 602 is limited during movement, it ensures that the puncture needle 602 always enters the patient's body at a specific angle, improving the puncture effect and quality. The fixing component is used to limit and fix the puncture needle 602. The function of the fixing component is to completely fix the puncture needle 602 when medical staff adjust its angle, preventing the puncture needle 602 from being touched during the angle adjustment process, which could cause deviation in the puncture angle and affect the subsequent puncture quality. At the same time, the fixing component can limit the movement of the puncture needle 602, so that the puncture needle 602 can only move in a straight line throughout the movement, thereby effectively improving the stability of the puncture process.

[0043] During use, after the medical staff adjusts the angle of the puncture needle 602, they press the control lever 504 to release the restriction of the fixing component on the puncture cannula 402. After being pressed, the control lever 504 drives the trapezoidal block 505 at the lower end to move downwards synchronously, and generates a horizontal thrust on the connecting plate 501 through the compression hole. This, in turn, drives the corresponding limiting wheel 406 to move horizontally through the sliding block 405. As the limiting wheel 406 moves, the distance between the two limiting wheels 406 is slightly larger than the diameter of the puncture cannula 402. At this time, the medical staff can push the puncture cannula 402 to move horizontally, and then the puncture cannula 402 drives the puncture needle 602 to move synchronously into the patient's body to complete the initial puncture.

[0044] The remaining structure is the same as that in Example 1.

[0045] Based on embodiments 1-2, the working principle of the present invention is as follows: Medical personnel attach the suction cup 1 to the skin surface surrounding the area to be punctured on the patient. First, by observing the imaging equipment, they determine the angle at which the puncture needle 602 will puncture the patient's body. Then, by rotating the control ring 104, the control ring 104 drives the adjusting rod 101 to rotate via the toothed block group 105. The medical personnel determine the rotation angle of the X-axis ring 102 by observing the position of the index needle 302 on the reading bar, thus completing the angle of the X-axis ring 102. Subsequently, the medical personnel rotate the changing ring 205 at the upper end of the X-axis ring 102. During the rotation of the changing ring 205, the transmission gear 204 is driven to rotate via the toothed block group 206 at the lower end. The transmission gear 204 drives the Y-axis ring 202 to rotate via the rotating rod 201, thereby controlling the puncture needle 602 to be fixed on the support plate 401 at a certain angle.

[0046] After the medical staff adjusts the angle of the puncture needle 602, they press the control lever 504 to release the fixation component from restricting the puncture cannula 402. When pressed, the control lever 504 drives the trapezoidal block 505 at its lower end to move downwards synchronously, and generates a horizontal thrust on the connecting plate 501 through the compression hole. This, in turn, drives the corresponding limiting wheel 406 to move horizontally through the sliding block 405. As the limiting wheel 406 moves, the distance between the two limiting wheels 406 is slightly larger than the diameter of the puncture cannula 402. At this time, the medical staff can push the puncture cannula 402 to move horizontally, and then the puncture cannula 402 drives the puncture needle 602 to move synchronously into the patient's body, completing the initial puncture.

[0047] Example 3: A puncture needle for use in minimally invasive surgery or interventional treatment, referring to... Figures 9-10The connection between the bevel of the puncture needle 602 and the inner lumen is configured as a transition structure 603. Through conventional grinding or other surface treatment methods, the bevel of the puncture needle 602 is provided with a distal edge treatment structure 604, and the edge of the transition structure of the puncture needle 602 is provided with a proximal edge treatment structure 605. The transition structure 603, the distal edge treatment structure 604, and the proximal edge treatment structure 605, together with the original bevel, form a double-slope structure to further protect the instrument and human tissue.

[0048] Specifically, its core is to set a transition structure 603 at the connection between the inclined surface and the inner cavity channel. At the same time, through traditional mechanical grinding (grinding wheel, etc.), precision grinding (grinding with soft polishing wheel and grinding paste, etc.), special grinding (chemical, ultrasonic, electrolytic grinding, etc.), and other metal surface treatments (magnetic grinding, sandblasting, etc.), a distal edge treatment structure 604 and a proximal edge treatment structure 605 are formed. These two structures can be rounded corners, chamfers or other smooth contact surfaces, forming a double-slope structure with the original inclined surface to further protect the instruments and human tissues, significantly improving the safety and compatibility of the puncture needle 602. When used with guidewires and other instruments, this design reduces sharp friction between the puncture needle 602 and the coating or outer surface of the instruments, preventing the coating or outer surface material from being peeled off and remaining in the body. It protects the surface of the guidewire and other instruments from scratches, dents, or damage, and prevents metal wires or other components from lifting and affecting their function. This also minimizes pushing resistance for medical personnel during surgery and avoids the accumulation of inconspicuous plastic debris in the body. During contact with human tissue, this design allows for safer contact between the puncture needle 602 lumen and blood vessels, nerves, or soft tissue, reducing bleeding, inflammation, and postoperative pain.

[0049] The transition structure 603 and the proximal edge treatment structure 605 work together with the distal edge treatment structure 604 to form a double-slope surface. The purpose is to improve compatibility with combined instruments, facilitate assembly, reduce operational resistance, protect the instrument structure from scratches, and reduce the risk of breakage, making the surgery safer and more convenient. For example, this structure further reduces friction between the puncture needle and the surface coating or outer surface of instruments such as guidewires. When used with guidewires, it allows for a greater bendability angle; when used with radiofrequency ablation electrodes, it allows for a greater bendability angle and space for the radiofrequency ablation electrode extending from the slope.

[0050] The remaining structure is the same as that in Example 2.

[0051] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A puncture device applied to minimally invasive surgery or interventional therapy, comprising a suction cup, a mounting sleeve arranged at the upper end of the suction cup, characterized in that, Further comprising an adjusting unit arranged on the inner wall of the mounting sleeve, the adjusting unit comprises an X-axis component arranged on the inner wall of the mounting sleeve; The X-axis component comprises adjusting rods arranged on the inner walls of both sides of the mounting sleeve, an X-axis ring arranged between the two adjusting rods, a sector gear arranged on one end of the adjusting rod, a control ring arranged on the upper end of the suction cup, and a tooth block group one arranged on the upper end of the control ring, the lower end of the sector gear is respectively engaged with the corresponding tooth block group one; A Y-axis component is arranged on the inner wall of the X-axis ring, the Y-axis component comprises rotating rods arranged on the inner walls of both sides of the X-axis ring, a Y-axis ring arranged between the two rotating rods, a mounting ring groove opened in the inside of the X-axis ring, one end of each of the two rotating rods is located inside the mounting ring groove, a transmission gear arranged on one end of the rotating rod, a change ring arranged on the inner wall of the X-axis ring, two tooth block groups two arranged on the lower end of the change ring, the transmission gear is engaged with the corresponding tooth block group two, a reading component is arranged on the outer wall of the control ring and the change ring, and a fixing component is arranged on the inner wall of the Y-axis ring; The fixing component comprises a bearing plate arranged on the inner wall of the Y-axis ring, a penetrating hole opened in the bearing plate, a puncture sleeve arranged in the penetrating hole, a puncture needle fixedly arranged on the lower end of the puncture sleeve, a limiting element and an unlocking element arranged in the bearing plate; The limiting element comprises a mounting groove opened in the bearing plate, sliding grooves opened in the two sides of the mounting groove, sliding blocks arranged in the sliding grooves, limiting wheels arranged between the sliding blocks, the distance between the two limiting wheels is slightly smaller than the diameter of the puncture sleeve, and a rubber ring is arranged on the limiting wheel; The unlocking element comprises a connecting plate arranged between the corresponding two sliding blocks, a reset plate arranged on one end of the connecting plate, a spring rod arranged on the reset plate and the inner wall of the mounting groove, a pressing hole opened in the connecting plate, a control rod sealingly and slidingly arranged on the upper end of the bearing plate, a trapezoidal block arranged on the lower end of the control rod, a reset disc arranged on the upper end of the control rod, and a reset spring arranged between the reset disc and the outer wall of the bearing plate.

2. The puncture device for use in minimally invasive surgery or interventional therapy according to claim 1, characterized in that, The reading component comprises a finger plate arranged on the upper end of the control ring and the change ring, an index needle arranged on the side wall of the finger plate, an extension ring arranged on the outer wall of the X-axis ring, a reading bar opened in the extension ring and the upper end of the suction cup, and the two index needles are respectively located on the corresponding reading bars.

3. The puncture device for use in minimally invasive surgery or interventional therapy according to claim 1, characterized in that, An air suction pipe is fixedly arranged on the upper end of the suction cup, and the suction cup is used for fixing the mounting sleeve on the surface of the skin of a patient.

4. The puncture needle for minimally invasive surgery or interventional treatment is applied to the puncture device for minimally invasive surgery or interventional treatment in claim 1, characterized in that, The connecting part between the inclined surface of the puncture needle and the inner cavity pipeline is arranged as a transition structure, a distal end edge treatment structure is arranged on the inclined surface of the puncture needle, and a proximal end edge treatment structure is arranged on the transition structure edge of the puncture needle.

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