Magnetic navigation auxiliary puncture device

Abstract

The invention belongs to the technical field of magnetic navigation puncture, and particularly relates to a magnetic navigation auxiliary puncture device which comprises a needle holder, a groove allowing a needle body to move is formed in the top of the needle holder, a resistance sensor is installed in the groove, two symmetrically-arranged servo motors are fixedly installed in the needle holder, and a magnetic navigation device is installed in the servo motors. Two symmetrically arranged fixing plates are fixedly mounted in the needle holder; the needle holder and the magnetic navigation puncture system are connected and matched for use through the magnetic positioning chip. Under the condition that the magnetic navigation puncture system obtains a B-ultrasonic image of a puncture part through a probe, a needle holder is used, a needle body is installed, a power supply is turned on, the magnetic navigation puncture system is wirelessly connected, the magnetic navigation puncture system immediately starts to track the needle holder provided with a magnetic positioning chip, and the B-ultrasonic image of the puncture part is acquired through real-time feedback on a computer screen. Therefore, the three-dimensional coordinates of the probe in the body can be accurately calculated, and a corresponding puncture safety area and a corresponding puncture route can be given to carry out puncture operation.

Description

Technical Field

[0001] The invention belongs to the technical field of magnetic navigation puncture, in particular to a magnetic navigation assisted puncture device. Background Art

[0002] Magnetic navigation technology is a new, non-invasive navigation method that uses magnetic fields for precise positioning and control. With the continuous transformation of magnetic navigation systems, the cross-integration of computer-aided technology, imaging technology and other disciplines, its application in the medical field is becoming increasingly widespread.

[0003] Due to individual differences in puncture and operator dependence, the puncture success rate and patient experience vary greatly. Current clinical operators need to undergo professional training and long-term practical accumulation to ensure the accuracy and safety of the operation. If the operation is improper, the puncture needle may deviate from the target during the operation, which may damage the surrounding tissues and nerves and lead to complications.

[0004] To this end, the present invention provides a magnetic navigation-assisted puncture device. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve its technical problems is: a magnetic navigation-assisted puncture device described in the present invention includes a needle holder, a groove for the movement of the needle body is opened on the top of the needle holder, a resistance sensor is installed in the groove, two symmetrically arranged servo motors are fixedly installed in the needle holder, two symmetrically arranged fixing plates are fixedly installed in the needle holder, a plurality of rotating columns are rotatably connected to the fixing plates, gears and sleeves are fixedly installed on the surface of the rotating columns, a plurality of the gears are meshed with each other, and the bottom of the rotating column is fixedly connected to the output end of the servo motor; a magnetic positioning chip associated with a magnetic navigation system is arranged on one side of the needle holder, a battery is installed in the needle holder, a display screen is arranged on one side of the needle holder, and a first button and a second button of the servo motor are arranged on a side of the needle holder close to the display screen.

[0007] Furthermore, a placement groove is provided on one side of the needle holder close to the display screen, a liquid storage tube is fixedly installed inside the placement groove, a liquid inlet pipe and a liquid outlet pipe connected to the interior and provided with a one-way valve are respectively installed on the top and bottom of the liquid storage tube, an electric push rod is fixedly installed in the placement groove, a sealing disk is sealingly and slidably connected to the bottom of the liquid storage tube, an output end of the electric push rod is fixedly connected to the sealing disk, and a third button and a fourth button are provided on one side of the needle holder.

[0008] Furthermore, the needle body is composed of an inner needle core and an outer vacuum needle tube, scale lines are engraved on the surface of the needle body, and a hose is fixedly installed at the tail end of the needle body.

[0009] Furthermore, an adaptor mechanism is provided on the sleeve disc, and the adaptor mechanism includes a plurality of storage grooves opened on the sleeve disc, and a slide is slidably connected to the interior of the storage groove via an elastic member, a connecting rod is fixedly installed on a side of the slide away from the elastic member, and an arc-shaped auxiliary plate is fixedly installed on a side of the connecting rod away from the slide, and a side of the auxiliary plate away from the connecting rod is made of anti-slip material.

[0010] Furthermore, a blowing assembly is provided at the bottom of the sleeve disc, and the blowing assembly includes an air duct connected to the receiving groove. The slide plate and the receiving groove are sealed and slidably connected. The elastic member is a hollow elastic ball, and shrinkage holes are opened on the surface of the elastic member.

[0011] Furthermore, the air duct is inclined, and a filter is fixedly installed in the air duct.

[0012] Furthermore, the air guide tube is fixedly mounted with two symmetrically arranged guide plates, and the cross-section of the guide plates is arc-shaped.

[0013] Furthermore, protective mechanisms are provided at the ports of the liquid outlet pipe and the liquid inlet pipe, and the protective mechanisms include a ring fixedly installed on the surface of the liquid outlet pipe, one side of the ring is slidably connected to a protective sleeve through a spring, and one end of the protective sleeve is rotatably connected to two end covers through two torsion springs.

[0014] Furthermore, two rubber limit posts are fixedly installed on one side of the protective sleeve close to the spring. The limit posts gradually increase in size from one end close to the protective sleeve to one end away from the protective sleeve. The surface of the ring is provided with limit grooves that match the limit posts.

[0015] Furthermore, sealing gaskets are fixedly installed on the sides of the two end covers that are close to each other, and the sealing gaskets are made of flexible material.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. The magnetic navigation-assisted puncture device described in the present invention connects the needle holder to the magnetic navigation puncture system through a magnetic positioning chip and uses them together. When the magnetic navigation puncture system has obtained the B-ultrasound image of the puncture site through the probe, use the needle holder, install the needle body, turn on the power, and wirelessly connect to the magnetic navigation puncture system. The magnetic navigation puncture system immediately starts to track the needle holder equipped with the magnetic positioning chip, and through the real-time feedback on the computer screen, the three-dimensional coordinates of the probe in the body are accurately calculated, and the corresponding puncture safety zone and route are given to perform the puncture operation. The servo motor is used to drive the gear to rotate. After the gear rotates, it will drive the other gears on the fixed plate to rotate together, thereby driving the sleeve disk to rotate, and the sleeve disk drives the needle body in the groove to move. The sealing disk is used to push the medicine pre-stored in the liquid storage tube into the hose and the needle body through the liquid outlet tube, so as to be delivered to the patient's body. The mechanism designed in the present application can guide the needle insertion trajectory in real time, reduce the occurrence of complications, improve the puncture accuracy, and also improve the puncture safety, reduce the number of punctures, reduce the patient's pain, and improve comfort; at the same time, electric injection is used to maintain the drug injection speed, injection and withdrawal, avoid damage to blood vessels, avoid uneven distribution of drugs, maintain controllable effects, and reduce complications; and when using an electric needle for puncture, it can puncture and withdraw into the tissue at a uniform speed to avoid puncturing other tissues, making the speed controllable and the entire puncture process visualized, which also reduces the occurrence of complications and reduces the learning cost of doctors.

[0018] 2. The magnetic navigation-assisted puncture device described in the present invention starts two servo motors to move the needle body in the groove. Whenever the next auxiliary plate contacts the needle body, the needle body will squeeze the auxiliary plate, the connecting rod, the slide plate and the elastic member to slide and shrink into the storage groove, thereby squeezing the gas in the storage groove to blow into the groove through the air guide tube, and performing a preliminary pre-cleaning operation on the groove. The filter can reduce the entry of impurities when the needle holder is not in use, and the installation of the guide plate can guide the blown gas to the surroundings, thereby increasing the cleaning area. The installed adapter mechanism and the blowing assembly can achieve the function of efficient pre-cleaning of the groove, and can also adapt to needle bodies of different sizes. At the first start, the needle holder can also complete the self-inspection, which effectively prevents the device from being damaged when the needle holder is used directly.

[0019] 3. A magnetic navigation-assisted puncture device described in the present invention slides the protective sleeve with the end cover in the direction of the collar, and the end cover is lifted up by the port of the liquid inlet pipe, and then rotates in the direction away from the liquid inlet pipe, thereby exposing the liquid inlet pipe and opening it, which is convenient for the liquid inlet pipe to dock with other pipelines. At this time, the limit column made of rubber material at one end of the protective sleeve is temporarily fixed in the limit groove of the collar, so the spring will not drive the protective sleeve and the end cover to reset and affect the docking of the liquid inlet pipe. When the liquid inlet pipe is not in use, the protective sleeve and the end cover are pulled to reset, thereby protecting the end of the liquid inlet pipe, and the sealing gasket can close the gap to further protect the liquid inlet pipe. The protective mechanism designed by the present application realizes the protection of the liquid inlet pipe and the liquid outlet pipe when not in use. When the liquid inlet pipe and the liquid outlet pipe need to be used, they can also be opened quickly and conveniently without affecting normal use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the needle holder of the present invention;

[0022] Figure 2 It is a schematic diagram of the structure of the placement slot in the present invention;

[0023] Figure 3 It is a structural schematic diagram of the servo motor in the present invention;

[0024] Figure 4 It is a partial cross-sectional structural schematic diagram of the needle holder of the present invention;

[0025] Figure 5 The present invention Figure 4 A schematic diagram of the structure at A;

[0026] Figure 6 It is a partial cross-sectional structural schematic diagram of the airway tube in the present invention;

[0027] Figure 7 It is a schematic cross-sectional structural diagram of the protective cover in the present invention.

[0028] In the figure: 1. needle holder; 2. groove; 3. resistance sensor; 4. servo motor; 5. fixing plate; 6. rotating column; 7. gear; 8. sleeve; 9. needle body; 10. magnetic positioning chip; 11. display screen; 12. first button; 13. second button; 14. placement slot; 15. liquid storage tube; 16. liquid outlet tube; 17. liquid inlet tube; 18. electric push rod; 19. scale line;

[0029] 20. Adaptation mechanism; 21. Storage slot; 22. Connecting rod; 23. Slide plate; 24. Elastic member; 25. Auxiliary plate;

[0030] 26. Air blowing assembly; 261. Air guide tube; 262. Filter screen; 263. Guide plate;

[0031] 30. Protective mechanism; 31. Ring; 32. Protective sleeve; 33. Spring; 34. End cover; 35. Limiting column; 36. Limiting groove; 37. Sealing pad;

[0032] 40. Third button; 50. Fourth button. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0034] like Figures 1 to 7 As shown, a magnetic navigation-assisted puncture device according to an embodiment of the present invention comprises a needle holder 1, a groove 2 for the needle body 9 to move is provided on the top of the needle holder 1, a resistance sensor 3 is installed in the groove 2, two symmetrically arranged servo motors 4 are fixedly installed in the needle holder 1, two symmetrically arranged fixing plates 5 are fixedly installed in the needle holder 1, a plurality of rotating columns 6 are rotatably connected to the fixing plates 5, gears 7 and sleeves 8 are fixedly installed on the surface of the rotating columns 6, a plurality of gears 7 are meshed with each other, and the bottom of the rotating columns 6 is fixedly connected to the output end of the servo motor 4. A magnetic positioning chip 10 associated with the magnetic navigation system is provided on one side of the needle holder 1, a battery is installed in the needle holder 1, a display screen 11 is provided on one side of the needle holder 1, and a first button 12 and a second button 13 of the servo motor 4 are provided on the side of the needle holder 1 close to the display screen 11.

[0035] Specifically, a placement groove 14 is provided on one side of the needle holder 1 close to the display screen 11, a liquid storage tube 15 is fixedly installed inside the placement groove 14, a liquid inlet tube 17 and a liquid outlet tube 16 connected to the inside and provided with a one-way valve are installed at the top and bottom of the liquid storage tube 15, respectively, an electric push rod 18 is fixedly installed inside the placement groove 14, a sealing disk is sealingly slidably connected to the bottom of the liquid storage tube 15, the output end of the electric push rod 18 is fixedly connected to the sealing disk, and a third button 40 and a fourth button 50 are provided on one side of the needle holder 1. The needle body 9 is composed of an inner needle core and an outer vacuum needle tube, and a scale line 19 is engraved on the surface of the needle body 9.

[0036] When working, the needle holder 1 is connected to the magnetic navigation puncture system through the magnetic positioning chip 10. The system is a prior art and is widely used in this field, so the system will not be described here in detail and used in conjunction. When the magnetic navigation puncture system has obtained the B-ultrasound image of the puncture site through the probe, the needle holder 1 is used, the needle body 9 is installed, the power is turned on, and the magnetic navigation puncture system is wirelessly connected. The magnetic navigation puncture system immediately starts to track the needle holder 1 equipped with the magnetic positioning chip 10, and through the real-time feedback on the computer screen, the three-dimensional coordinates of the probe in the body are accurately calculated, and the corresponding puncture safety zone and route are given to perform the puncture operation.

[0037] First, the needle body 9 is installed in the groove 2 of the needle holder 1 so that the needle body 9 contacts the sleeve disc 8, and then the servo motor 4 in the needle holder 1 is started, and the gear 7 is driven to rotate by the servo motor 4. After the gear 7 rotates, it will drive the other gears 7 on the fixed plate 5 to rotate together, thereby driving the sleeve disc 8 to rotate, and the sleeve disc 8 drives the needle body 9 in the groove 2 to move. By pressing the first button 12, the servo motor 4 is started to drive the needle body 9 forward, and by pressing the second button 13, the servo motor 4 is reversed, thereby driving the needle body 9 backward. After puncturing to the position, the inner needle core is pulled out, and the outer hollow tube needle is left for drug administration. By connecting the hose at the tail end of the needle body 9 with the liquid outlet tube 16 of the liquid storage tube 15, it is convenient to control the electric push rod 18 by pressing the third button 40 and the fourth button 50, so that the electric push rod 18 uses the sealing disk to push the medicine pre-stored in the liquid storage tube 15 into the hose and the needle body 9 through the liquid outlet tube 16, so as to be delivered to the patient. If the medicine in the liquid storage tube 15 is insufficient, it is also possible to flexibly choose to connect the hose at the tail of the needle body 9 to the external medicine, so as not to be limited to the connection with the liquid storage tube 15. The resistance sensor 3 can detect the needle insertion resistance and pressure of the needle body 9 in real time, and then display it on the display screen 11. At the same time, the battery inside the needle holder 1 supplies power to the entire device, thereby driving the device for use.

[0038] The mechanism designed in the present application can guide the needle insertion trajectory in real time, reduce the occurrence of complications, improve the puncture accuracy, and also improve the puncture safety, reduce the number of punctures, reduce the patient's pain, and improve comfort; at the same time, electric injection is used to maintain the drug injection speed, injection and withdrawal, avoid damage to blood vessels, avoid uneven distribution of drugs, maintain controllable effects, and reduce complications; and when using an electric needle body 9 for puncture, it can puncture and withdraw into the tissue at a uniform speed to avoid puncturing other tissues, making the speed controllable, and the entire puncture process visualized, which also reduces the occurrence of complications and reduces the learning cost of doctors.

[0039] The sleeve disc 8 is provided with an adapting mechanism 20, which includes a plurality of receiving grooves 21 provided on the sleeve disc 8. The inside of the receiving groove 21 is slidably connected with a slide plate 23 through an elastic member 24. A connecting rod 22 is fixedly installed on the side of the slide plate 23 away from the elastic member 24. An arc-shaped auxiliary plate 25 is fixedly installed on the side of the connecting rod 22 away from the slide plate 23. The side of the auxiliary plate 25 away from the connecting rod 22 is made of a non-slip material. The bottom of the sleeve disc 8 is provided with an air blowing assembly 26, which includes an air guide pipe 261 connected to the receiving groove 21. The slide plate 23 and the receiving groove 21 are sealed and slidably connected. The elastic member 24 is a hollow elastic ball, and a shrinkage hole is provided on the surface of the elastic member 24. The air guide pipe 261 is inclined, and a filter screen 262 is fixedly installed in the air guide pipe 261. The air guide pipe 261 is fixedly installed with two symmetrically arranged guide plates 263, and the cross section of the guide plate 263 is arc-shaped.

[0040] When working, after the needle holder 1 has been stored for a long time, before the first use, the unused needle body 9 is first placed in the groove 2, and the auxiliary plate 25 is squeezed and slid into the storage groove 21 by the needle body 9. It should be noted that this is not limited to the needle body 9, and the object only needs to squeeze the auxiliary plate 25 into the storage groove 21. By starting the two servo motors 4, the needle body 9 in the groove 2 is moved. Whenever the next auxiliary plate 25 contacts the needle body 9, the needle body 9 will squeeze the auxiliary plate 25, the connecting rod 22, the slide plate 23 and the elastic member 24 to slide and shrink into the storage groove 21, thereby squeezing the gas in the storage groove 21 to blow into the groove 2 through the air guide pipe 261, and the groove 2 is pre-cleaned. The filter 262 can reduce the entry of impurities when the needle holder 1 is not in use, and the guide plate 263 can guide the blown gas to the surroundings, thereby increasing the cleaning area.

[0041] The installed adapter mechanism 20 and the blowing assembly 26 can achieve the function of efficient pre-cleaning of the groove 2, and can also adapt to needle bodies 9 of different sizes. The needle holder 1 can also complete a self-check during the initial startup, effectively preventing the needle holder 1 from being damaged when the device is directly used.

[0042] A protective mechanism 30 is provided at the ports of the liquid outlet pipe 16 and the liquid inlet pipe 17. The protective mechanism 30 includes a collar 31 fixedly mounted on the surface of the liquid outlet pipe 16. A protective sleeve 32 is slidably connected to one side of the collar 31 through a spring 33. One end of the protective sleeve 32 is rotatably connected to two end caps 34 through two torsion springs. Two rubber limit posts 35 are fixedly mounted on one side of the protective sleeve 32 close to the spring 33. The limit posts 35 gradually increase in size from the end close to the protective sleeve 32 to the end away from the protective sleeve 32. A limit groove 36 matching the limit posts 35 is provided on the surface of the collar 31. A sealing gasket 37 made of a flexible material is fixedly mounted on the side close to each other of the two end caps 34.

[0043] During operation, when the inlet pipe 17 and the outlet pipe 16 are not in use, they are protected by the protective sleeve 32 and the end cover 34. When the inlet pipe 17 and the outlet pipe 16 need to be used, the protective sleeve 32 is slid so that the protective sleeve 32 and the end cover 34 slide together in the direction of the collar 31, and the end cover 34 is rotated and lifted by the port of the inlet pipe 17, and then rotated in the direction away from the inlet pipe 17, so that the inlet pipe 17 is exposed and opened, which is convenient for the inlet pipe 17 to be connected with other pipes. At this time, the limit column 35 made of rubber material at one end of the protective sleeve 32 is temporarily fixed in the limit groove 36 of the collar 31, so that the spring 33 will not drive the protective sleeve 32 and the end cover 34 to reset and affect the connection of the inlet pipe 17. When the inlet pipe 17 is not in use, the protective sleeve 32 and the end cover 34 are pulled to reset, thereby protecting the end of the inlet pipe 17, and the sealing gasket 37 can close the gap to further protect the inlet pipe 17. The same is true for the protection mechanism 30 on the liquid outlet pipe 16, so it will not be described in detail.

[0044] The protection mechanism 30 designed in the present application can protect the liquid inlet pipe 17 and the liquid outlet pipe 16 when not in use. When the liquid inlet pipe 17 and the liquid outlet pipe 16 need to be used, they can be opened quickly and conveniently without affecting normal use.

[0045] Working principle: The needle holder 1 is connected to the magnetic navigation puncture system through the magnetic positioning chip 10 and used in conjunction. When the magnetic navigation puncture system has obtained the B-ultrasound image of the puncture site through the probe, the needle holder 1 is used, the needle body 9 is installed, the power is turned on, and the magnetic navigation puncture system is wirelessly connected. The magnetic navigation puncture system immediately starts to track the needle holder 1 equipped with the magnetic positioning chip 10, and the three-dimensional coordinates of the probe in the body are accurately calculated through real-time feedback on the computer screen, and the corresponding puncture safety zone and route are given to perform the puncture operation. First, the needle body 9 is installed in the groove 2 of the needle holder 1 so that the needle body 9 contacts the sleeve 8, and then the servo motor 4 in the needle holder 1 is started. The servo motor 4 drives the gear 7 to rotate. After the gear 7 rotates, it drives the other gears 7 on the fixed plate 5 to rotate together, thereby driving the sleeve 8 to rotate, and the sleeve 8 drives the needle body 9 in the groove 2 to move. By pressing the first button 12, the servo motor 4 is started to drive the needle body 9 forward, and by pressing the second button 13, the servo motor 4 is reversed, thereby driving the needle body 9 backward. After puncturing to the position, the inner needle core is pulled out, leaving the outer hollow tube needle for drug administration, and the hose at the tail end of the needle body 9 is connected to the liquid outlet tube 16 of the liquid storage tube 15, so as to facilitate the subsequent control of the electric push rod 18 by pressing the third button 40 and the fourth button 50, so that the electric push rod 18 uses the sealing disk to push the medicine pre-stored in the liquid storage tube 15 into the hose and the needle body 9 through the liquid outlet tube 16, and then deliver it to the patient. If the medicine in the liquid storage tube 15 is not enough, it can also be flexibly selected to connect the hose at the tail end of the needle body 9 to the external medicine liquid, so as not to be limited to the connection with the liquid storage tube 15. The resistance sensor 3 can detect the needle insertion resistance and pressure of the needle body 9 in real time, and then display it on the display screen 11. At the same time, the battery inside the needle holder 1 supplies power to the entire device, thereby driving the device for use.

[0046] After the needle holder 1 has been stored for a long time, before the first use, the unused needle body 9 is first placed in the groove 2, and the auxiliary plate 25 is squeezed and slid into the storage groove 21 by the needle body 9. It should be noted that this is not limited to the needle body 9, and the object only needs to be able to squeeze the auxiliary plate 25 into the storage groove 21. By starting the two servo motors 4, the needle body 9 in the groove 2 is moved. Whenever the next auxiliary plate 25 contacts the needle body 9, the needle body 9 will squeeze the auxiliary plate 25, the connecting rod 22, the slide plate 23 and the elastic member 24 to slide and shrink into the storage groove 21, thereby squeezing the gas in the storage groove 21 to blow into the groove 2 through the air guide pipe 261, and the groove 2 is pre-cleaned. The filter 262 can reduce the entry of impurities when the needle holder 1 is not in use, and the guide plate 263 can guide the blown gas to the surroundings, thereby increasing the cleaning area.

[0047] When the inlet pipe 17 and the outlet pipe 16 are not in use, they are protected by the protective sleeve 32 and the end cover 34. When the inlet pipe 17 and the outlet pipe 16 need to be used, the protective sleeve 32 is slid so that the protective sleeve 32 and the end cover 34 slide together in the direction of the collar 31, and the end cover 34 is rotated and lifted by the port of the inlet pipe 17, and then rotated in the direction away from the inlet pipe 17, so that the inlet pipe 17 is exposed and opened, which is convenient for the inlet pipe 17 to be connected with other pipes. At this time, the rubber limit column 35 at one end of the protective sleeve 32 is temporarily fixed in the limit groove 36 of the collar 31, so that the spring 33 will not drive the protective sleeve 32 and the end cover 34 to reset and affect the connection of the inlet pipe 17. When the inlet pipe 17 is not in use, the protective sleeve 32 and the end cover 34 are pulled to reset, thereby protecting the end of the inlet pipe 17, and the sealing gasket 37 can close the gap to further protect the inlet pipe 17. The same is true for the protection mechanism 30 on the liquid outlet pipe 16, so it will not be described in detail.

[0048] The above-mentioned front, back, left, right, top and bottom are all based on the figures in the specification. Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0049] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0050] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A magnetic navigation-assisted puncture device, characterized in that: The needle holder (1) comprises a groove (2) for the needle body (9) to move, the groove (2) being provided with a resistance sensor (3), two symmetrically arranged servo motors (4) being fixedly installed in the needle holder (1), two symmetrically arranged fixing plates (5) being fixedly installed in the needle holder (1), a plurality of rotating columns (6) being rotatably connected to the fixing plates (5), a gear (7) and a sleeve (8) being fixedly installed on the surface of the rotating column (6), a plurality of the gears (7) being meshed with each other, and a bottom of the rotating column (6) being fixedly connected to an output end of the servo motor (4); A magnetic positioning chip (10) associated with a magnetic navigation system is disposed on one side of the needle holder (1), a battery is installed in the needle holder (1), a display screen (11) is disposed on one side of the needle holder (1), and a first button (12) and a second button (13) of a servo motor (4) are disposed on a side of the needle holder (1) close to the display screen (11).

2. A magnetic navigation-assisted puncture device according to claim 1, characterized in that: The needle holder (1) is provided with a placement groove (14) on one side close to the display screen (11), a liquid storage tube (15) is fixedly installed inside the placement groove (14), a liquid inlet tube (17) and a liquid outlet tube (16) which are connected to the inside and have a one-way valve are installed at the top and bottom of the liquid storage tube (15), respectively, an electric push rod (18) is fixedly installed in the placement groove (14), a sealing disk is sealingly slidably connected to the bottom of the liquid storage tube (15), and the output end of the electric push rod (18) is fixedly connected to the sealing disk, and a third button (40) and a fourth button (50) are provided on one side of the needle holder (1).

3. A magnetic navigation-assisted puncture device according to claim 1, characterized in that: The needle body (9) is composed of an inner needle core and an outer vacuum needle tube. The surface of the needle body (9) is engraved with scale lines (19). A hose is fixedly mounted at the tail end of the needle body (9).

4. The magnetic navigation-assisted puncture device according to claim 1, characterized in that: The sleeve disc (8) is provided with an adapting mechanism (20), and the adapting mechanism (20) comprises a plurality of receiving grooves (21) opened on the sleeve disc (8), and the interior of the receiving groove (21) is slidably connected with a slide plate (23) via an elastic member (24), and a connecting rod (22) is fixedly installed on the side of the slide plate (23) away from the elastic member (24), and an arc-shaped auxiliary plate (25) is fixedly installed on the side of the connecting rod (22) away from the slide plate (23), and the side of the auxiliary plate (25) away from the connecting rod (22) is made of an anti-slip material.

5. A magnetic navigation-assisted puncture device according to claim 4, characterized in that: The bottom of the sleeve (8) is provided with an air blowing assembly (26), the air blowing assembly (26) comprises an air guide pipe (261) connected to the receiving groove (21), the slide plate (23) and the receiving groove (21) are sealed and slidably connected, the elastic member (24) is a hollow elastic ball, and a shrinkage hole is opened on the surface of the elastic member (24).

6. A magnetic navigation-assisted puncture device according to claim 5, characterized in that: The air guide pipe (261) is inclined, and a filter screen (262) is fixedly installed in the air guide pipe (261).

7. The magnetic navigation-assisted puncture device according to claim 5, characterized in that: The air guide tube (261) is fixedly mounted with two symmetrically arranged guide plates (263), and the cross section of the guide plates (263) is arc-shaped.

8. The magnetic navigation-assisted puncture device according to claim 2, characterized in that: A protective mechanism (30) is provided at the ends of the liquid outlet pipe (16) and the liquid inlet pipe (17), the protective mechanism (30) comprising a collar (31) fixedly mounted on the surface of the liquid outlet pipe (16), one side of the collar (31) being slidably connected to a protective sleeve (32) via a spring (33), and one end of the protective sleeve (32) being rotatably connected to two end covers (34) via two torsion springs.

9. A magnetic navigation-assisted puncture device according to claim 8, characterized in that: Two rubber limit posts (35) are fixedly mounted on one side of the protective sleeve (32) close to the spring (33); the limit posts (35) gradually increase in size from one end close to the protective sleeve (32) to one end away from the protective sleeve (32); and a limit groove (36) matching the limit post (35) is provided on the surface of the collar (31).

10. The magnetic navigation-assisted puncture device according to claim 9, characterized in that: A sealing gasket (37) is fixedly mounted on one side of the two end covers (34) close to each other, and the sealing gasket (37) is made of a flexible material.

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