Anesthetic needle marking device capable of realizing ultrasonic development positioning

Abstract

The utility model belongs to the technical field of biomedical engineering, and particularly relates to an anesthetic needle marking device for realizing ultrasonic development positioning, which comprises a knife pressing plate, an inner support plate, an outer support plate, a rotary sleeve and a shell, marking dents are carved on the anesthetic needle after inner side knife pressing tips of a plurality of knife pressing plates which are the same in shape and structure and are centrosymmetric are tightened; a knife pressing positioning shaft hole is formed in the inner corner of one vertex angle of the knife pressing plate, and the knife pressing positioning shaft penetrates through the knife pressing positioning shaft hole; a knife pressing plate driving shaft hole is formed in the inner corner of the other vertex angle of the knife pressing plate, and the knife pressing driving shaft penetrates through the knife pressing plate driving shaft hole; the pressure driving shaft is inserted into one end of the connecting rod, the other end of the connecting rod is connected with the sleeve connecting shaft through hole, the sleeve connecting shaft sleeves the rotating sleeve, and the two ends of the sleeve connecting shaft are inserted into the shell. According to the utility model, the total reflection dents are engraved on the conventional common anesthetic needle through mechanical positioning and special engraving methods, and ultrasonic reflection signals are enhanced, so that developing and positioning under ultrasound are realized.

Description

Technical Field

[0001] This utility model relates to the field of biomedical engineering technology, and in particular to an anesthesia needle marking device for ultrasound imaging and positioning. Background Technology

[0002] Nerve block techniques, as a relatively effective, safe, and side-effect-free medical technique with a fast recovery rate, are typically used to inject anesthetic drugs around nerve trunks, plexuses, and ganglia to block the connection between nerves and pain-causing nerves in the brain, thus anesthetizing the affected area and relieving muscle spasms caused by pain, improving the local vicious cycle. However, the proper injection of nerve block needles relies heavily on experienced medical professionals to accurately determine the injection site and avoid damaging surrounding blood vessels and tissues. Improper operation can inevitably lead to local bleeding or nerve damage. To reduce surgical accidents caused by lapses in experience, the following methods are currently being used to address this issue.

[0003] First, nerve block techniques can now be effectively injected under ultrasound guidance, unlike earlier surgical procedures that could only be performed based on body position and anatomical location. This significantly improves the precision and effectiveness of the procedure.

[0004] Secondly, the use of new anesthetic and analgesic drugs can enhance the sustained effect of nerve block injections, prolong the duration of a single treatment, and improve the patient's treatment outcome.

[0005] Finally, most surgeries at present use minimally invasive techniques, which reduce patients' pain and discomfort and speed up their recovery period through smaller needles and more precise operations.

[0006] Current technology can only address the extent of anesthetic diffusion in the injection area, but it cannot accurately pinpoint the needle insertion location. There remains a relatively high probability of the anesthetic needle puncturing nerves or blood vessels, causing internal damage and unnecessary trauma. Anesthesia needles using ultrasound imaging for localization typically require custom-made needles, resulting in higher costs and greater difficulty in widespread adoption. Utility Model Content

[0007] The purpose of this invention is to provide an anesthesia needle marking device for ultrasound imaging and positioning. This device can quickly mark existing anesthesia needles, enabling the modification of ordinary anesthesia needles into ultrasound-detectable needles during ultrasound anesthesia surgery. By using total internal reflection of ultrasound to confirm the needle's specific location, it helps doctors inject anesthetic drugs more accurately, avoiding damage to nerves, blood vessels, and other tissues in the patient's body, reducing surgical trauma, and accelerating patient recovery. It does not require the use of custom needles, has lower costs, and is easy to promote.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0009] An anesthesia needle marking device for ultrasound imaging positioning includes a pressure plate, an inner support plate, an outer support plate, a rotating sleeve, and a housing. The inner pressure tip of the pressure plate is tightened by four identical pressure plates to mark three mutually perpendicular concave grooves on the anesthesia needle. A pressure positioning shaft hole is provided at one inner corner of the pressure plate, through which the pressure positioning shaft passes. A pressure driving shaft hole is provided at the other inner corner of the pressure plate, through which the pressure driving shaft passes. The pressure driving shaft is inserted through one end of a connecting rod, and the other end of the connecting rod is connected to the sleeve connecting shaft through a hole. The sleeve connecting shaft is sleeved on the rotating sleeve, and both ends of the sleeve connecting shaft are inserted into the housing.

[0010] The following is a further defined technical solution of this utility model: one end of the outer shell is provided with a hollow groove, and the pressure rod passes through the hollow groove of the outer shell and is fixed to the rotating sleeve by threads; the outer ends of the pressure knife drive shaft and the pressure knife positioning shaft are connected to the fixed plate, wherein the fixed plate is provided with a guide groove for guiding the pressure knife drive shaft; the cover plate is fixedly connected to the outer shell by screws, and the cover plate has a hole with the same diameter as the anesthesia needle; the outer shell and the support rod are fixed by threads.

[0011] The following is a further defined technical solution of this utility model: The inner support plate has round holes at its two inner corners corresponding to its outer side length, which are respectively the inner support plate positioning shaft hole and the inner support plate driving shaft hole; the inner support plate positioning shaft hole is inserted into the pressure knife positioning shaft, and the inner support plate driving shaft hole is inserted into the pressure driving shaft; after being fixed and tightened by four inner support plates with the same shape and structure and central symmetry, a receiving hole for the anesthesia needle to pass through is formed; the outer support plate has round holes at its two inner corners corresponding to its outer side length, which are respectively the outer support plate positioning shaft hole and the outer support plate driving shaft hole; the outer support plate positioning shaft hole is inserted into the pressure knife positioning shaft, and the outer support plate driving shaft hole is inserted into the pressure driving shaft; after being fixed and tightened by four outer support plates with the same shape and structure and central symmetry, a receiving hole for the anesthesia needle to pass through is formed.

[0012] The following is a further defined technical solution of this utility model: every four pressure plates form a pressure unit, symmetrically arranged around the central axis of the rotating sleeve; every four inner support plates form an inner support unit, symmetrically arranged around the central axis of the rotating sleeve; every four outer support plates form an outer support unit, symmetrically arranged around the central axis of the rotating sleeve; a total of five groups of pressure units composed of pressure plates are arranged; a total of two groups of inner support units composed of inner support plates are arranged; a total of two groups of outer support units composed of outer support plates are arranged; taking the tip of the anesthetic needle as the starting position, one group of outer support units is arranged sequentially at the starting point of the needle tip, three groups of pressure units are arranged against the outer support units, one group of inner support units is arranged against the pressure units, one group of pressure units is arranged against the inner support units, and one group of outer support units is arranged against the pressure units, arranged in a close and adjacent manner inside the rotating sleeve.

[0013] The following is a further defined technical solution of this utility model: with the tip of the anesthetic needle as the starting position, the pressing units from near to far from the tip of the anesthetic needle are the first pressing unit, the second pressing unit, the third pressing unit, the fourth pressing unit, and the fifth pressing unit.

[0014] The distance from the three perpendicular concave marks carved by the first set of pressing units to the tip of the anesthetic needle is equal to the distance from the three perpendicular concave marks carved by the first set of pressing units to the three perpendicular concave marks carved by the second set of pressing units.

[0015] The three perpendicular concave marks carved by the first set of pressing units are equidistant from the three perpendicular concave marks carved by the second set of pressing units and the three perpendicular concave marks carved by the third set of pressing units.

[0016] The distance between the three perpendicular concave marks carved by the second set of pressing units and the three perpendicular concave marks carved by the third set of pressing units is three times the distance between the three perpendicular concave marks carved by the third set of pressing units and the three perpendicular concave marks carved by the fourth set of pressing units.

[0017] The three perpendicular concave marks carved by the third set of pressing units are equidistant from the three perpendicular concave marks carved by the fourth set of pressing units and the three perpendicular concave marks carved by the fifth set of pressing units.

[0018] The location of the anesthetic needle tip can be determined by measuring the different distances from the indentation.

[0019] The following is a further defined technical solution of this utility model: the pressure plate is composed of an inner pressure tip, an outer arc-shaped edge of the pressure plate, a pressure positioning shaft hole, and a pressure driving shaft hole, with the inner pressure tip being the intersection point of three mutually perpendicular intersecting planes; the inner support plate is composed of an inner support plate positioning shaft hole, an inner support plate driving shaft hole, an inner support plate needle-holding groove, an inner concave edge, an inner convex edge, and an outer convex edge, with the diameter of the inner support plate needle-holding groove being the same as the diameter of the anesthesia needle; the outer support plate is composed of an outer support plate positioning shaft hole, an outer support plate driving shaft hole, an outer support plate slot, an outer support plate inner concave edge, an outer support plate inner convex edge, and an outer support plate needle-holding groove, with the diameter of the outer support plate needle-holding groove being the same as the diameter of the anesthesia needle.

[0020] The following is a further defined technical solution of this utility model: the pressure rod is opened and closed by moving up and down the hollow groove of the outer shell, thereby imprinting an inwardly recessed reflective surface composed of three mutually perpendicular planes on the surface of the anesthetic needle.

[0021] The following is a further defined technical solution of this utility model: the cover plate, outer support plate, inner support plate, and pressure plate are in the same horizontal position when fully closed, and the diameter of the central hole is consistent with the diameter of the anesthesia needle, thereby enabling the anesthesia needle to self-center.

[0022] The following is a further defined technical solution of this utility model: the pressure plate is made of biosafe hard alloy material; the inner support plate, outer support plate, fixed plate, pressure rod, and support rod are made of biosafe magnesium alloy material; the pressure positioning shaft, pressure driving shaft, connecting rod, sleeve connecting shaft, cover plate, outer shell, and limiting top shaft are made of biosafe medical stainless steel material.

[0023] Compared with the prior art, the present invention has the following technical effects:

[0024] This invention utilizes mechanical positioning and a special engraving method to imprint total reflection indentations on existing ordinary anesthetic needles, enhancing the ultrasonic reflection signal and achieving ultrasound imaging and positioning. For procedures involving the injection of anesthetic needles to perform nerve blocks under ultrasound imaging, this invention solves the problem of inaccurate needle placement leading to accidental injury to nerves, blood vessels, and other tissues, causing additional internal trauma during surgery.

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is an isometric structural schematic diagram of the device of this utility model;

[0028] Figure 2 This is a schematic diagram of the left-side structure of the device of this utility model;

[0029] Figure 3 This is a top view of the structure of the device of this utility model;

[0030] Figure 4 This is a top view cross-sectional structural diagram of the device of this utility model;

[0031] Figure 5 This is a top view of the device in the closed state, showing a cross-sectional view of the inner support plate.

[0032] Figure 6 This is a top view of the device in the open state, and a cross-sectional view of the inner support plate.

[0033] Figure 7 This is a top view and cross-sectional view of the pressure plate of the device in the closed state.

[0034] Figure 8 This is a top view of the device in the open state, and a cross-sectional view of the pressure plate.

[0035] Figure 9 This is a schematic diagram of the isometric structure of the pressure plate of the device of this utility model;

[0036] Figure 10 This is a front view structural diagram of the pressure plate of the device of this utility model;

[0037] Figure 11 This is an isometric structural diagram of the pressure plate of the device of this utility model;

[0038] Figure 12 This is an isometric structural diagram of the inner support plate of the device of this utility model;

[0039] Figure 13 This is a front view structural diagram of the inner support plate of the device of this utility model;

[0040] Figure 14 This is an isometric structural diagram of the inner support plate of the device of this utility model;

[0041] Figure 15 This is an isometric structural diagram of the outer support plate of the device of this utility model;

[0042] Figure 16 This is a front view structural diagram of the outer support plate of the device of this utility model;

[0043] Figure 17 This is an isometric structural diagram of the outer support plate of the device of this utility model.

[0044] In the diagram: 1. Pressure plate; 2. Pressure positioning shaft; 3. Pressure drive shaft; 4. Connecting rod; 5. Sleeve connecting shaft; 6. Rotating sleeve; 7. Inner support plate; 8. Outer support plate; 9. Fixed plate; 10. Cover plate; 11. Limiting top shaft; 12. Outer shell; 13. Pressure rod; 14. Support rod; 15. Anesthetic needle; 16. Pressure positioning shaft hole; 17. Pressure plate drive shaft hole; 18. Inner pressure tip; 19. Pressure knife. 20. Outer arc edge of the plate; 21. Positioning shaft hole of the inner support plate; 22. Drive shaft hole of the inner support plate; 23. Pin groove of the inner support plate; 24. Inner concave edge of the inner support plate; 25. Outer convex edge of the inner support plate; 26. Outer groove of the outer support plate; 27. Inner concave edge of the outer support plate; 28. Positioning shaft hole of the outer support plate; 29. ​​Drive shaft hole of the outer support plate; 30. Pin groove of the outer support plate; 31. Inner convex edge of the outer support plate. Detailed Implementation

[0045] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0046] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0047] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0048] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0049] like Figure 1-17 As shown, this embodiment provides an anesthesia needle marking device for ultrasound imaging and positioning, which includes a pressure plate 1, an inner support plate 7, an outer support plate 8, a rotating sleeve 6, and a housing 12.

[0050] The inner pressure tip 18 of the pressure plate 1 can be tightened by four pressure plates 1 with the same shape and structure to carve three mutually perpendicular concave marks on the anesthesia needle 15. The inner corner of one apex of the blade plate 1 is provided with a pressure positioning shaft hole 16, through which the pressure positioning shaft 2 passes for fixation; the inner corner of the other apex of the pressure plate 1 is provided with a pressure plate drive shaft hole 17, through which the pressure driving shaft 3 passes for driving; the pressure driving shaft 3 is inserted into the connecting rod 4 for fixation; the other end of the connecting rod 4 is connected to the sleeve connecting shaft 5 through a hole for fixation; the sleeve connecting shaft 5 is sleeved on the rotating sleeve 6 to form a closed structure; the sleeve connecting shaft 5 is inserted into the housing 12 for fixing; one end of the housing 12 is provided with a hollow groove, through which the pressure rod 13 passes and is fixed to the rotating sleeve 6 by threads; the outer ends of the pressure driving shaft 3 and the pressure positioning shaft 2 are fixed by fixing plates 9; the cover plate 10 has a hole with the same diameter as the anesthesia needle 15; the cover plate 10 is fixedly connected to the housing 12 by screws; the housing 12 and the support rod 14 are fixed by threads.

[0051] The inner support plate 7 serves as a partition and support. The two inner corners of its outer side are provided with round holes, namely the inner support plate positioning shaft hole 21 and the inner support plate driving shaft hole 20, respectively. The pressure knife positioning shaft 2 passes through the inner support plate positioning shaft hole 21 for fixation. The inner support plate driving shaft hole 20 of the inner support plate 7 is inserted and connected to the pressure driving shaft 3. After being fixed and tightened by four inner support plates 7 with the same shape and structure, the middle can accommodate the passage of the anesthesia needle 15.

[0052] The outer support plate 8 is located on the outermost side of the pressure plate 1 and serves to fix and support it. The two inner corners of its outer side are provided with round holes, namely the outer support plate positioning shaft hole 28 and the outer support plate driving shaft hole 29, respectively. The pressure plate positioning shaft 2 passes through the outer support plate positioning shaft hole 28 to fix it. The outer support plate driving shaft hole 29 of the outer support plate 8 is connected to the pressure driving shaft 3 through the hole. After being fixed and tightened by the four outer support plates 8 with the same shape and structure, it can accommodate the passage of the anesthesia needle 15.

[0053] The pressure plates 1 are arranged in groups of four, forming a pressure unit, and are symmetrically arranged around the central axis of the rotating sleeve 6; the inner support plates 7 are arranged in groups of four, forming an inner support unit, and are symmetrically arranged around the central axis of the rotating sleeve 6; the outer support plates 8 are arranged in groups of four, forming an outer support unit, and are symmetrically arranged around the central axis of the rotating sleeve 6.

[0054] Five sets of pressure units composed of pressure plates 1 are arranged; two sets of inner support units composed of inner support plates 7 are arranged; two sets of outer support units composed of outer support plates 8 are arranged. Taking the tip of the anesthetic needle 15 as the starting position, one set of outer support units composed of outer support plates 8 is arranged sequentially at the starting point of the needle tip. Three sets of pressure units composed of pressure plates 1 are arranged against the outer support units composed of outer support plates 8. One set of inner support plates 7 is arranged against the pressure units composed of pressure plates 1. One set of pressure plates 1 is arranged against the inner support plates 7. One set of inner support plates 7 is arranged against the pressure units composed of pressure plates 1. One set of pressure plates 1 is arranged against the inner support plates 7. One set of outer support units composed of outer support plates 8 is arranged against the pressure units composed of pressure plates 1. The above structures are arranged closely adjacent to each other in sequence and fixed inside the rotating sleeve 6.

[0055] Taking the tip of the anesthetic needle 15 as the starting position, the pressure unit consisting of the set of pressure plates 1 closest to the tip of the anesthetic needle 15 is defined as the first pressure unit. The next sets are the second, third, fourth, and fifth pressure units. The distance from the three perpendicular indentations pressed out by the first pressure unit to the tip of the anesthetic needle 15 is equidistant from the distance from the three perpendicular indentations pressed out by the first pressure unit to the distance from the three perpendicular indentations pressed out by the second pressure unit. The distance from the three perpendicular indentations pressed out by the first pressure unit to the distance from the three perpendicular indentations pressed out by the second pressure unit is equidistant from the distance from the three perpendicular indentations pressed out by the third pressure unit to the distance from the three perpendicular indentations pressed out by the second pressure unit to ... The straight three-sided indentation is equidistant from the mutually perpendicular three-sided indentation pressed out by the second set of pressure units. The distance between the four-sided indentation pressed out by the second set of pressure units and the mutually perpendicular three-sided indentation pressed out by the third set of pressure units is three times the distance between the mutually perpendicular three-sided indentation pressed out by the third set of pressure units and the fourth set of pressure units. The mutually perpendicular three-sided indentation pressed out by the third set of pressure units and the fourth set of pressure units are equidistant from the mutually perpendicular three-sided indentation pressed out by the fourth set of pressure units and the fifth set of pressure units. By observing the different distances of the indentations, the specific position of the anesthetic needle 15 can be accurately determined.

[0056] The pressure plate 1 is composed of an inner pressure tip 18, an outer arc edge 19, a pressure positioning shaft hole 16, and a pressure plate drive shaft hole 17. The inner pressure tip 18 is the intersection of three mutually perpendicular intersecting planes.

[0057] The inner support plate 7 is composed of an inner support plate positioning shaft hole 21, an inner support plate driving shaft hole 20, an inner support plate needle-holding groove 22, an inner concave edge 23, an inner convex edge 25, and an outer convex edge 24. The diameter of the inner support plate needle-holding groove 22 is the same as the diameter of the anesthetic needle 15.

[0058] The outer support plate 8 is composed of an outer support plate positioning shaft hole 28, an outer support plate driving shaft hole 29, an outer support plate slot 26, an outer support plate inner concave edge 27, an outer support plate inner convex edge 31, and an outer support plate needle slot 30. The diameter of the outer support plate needle slot 30 is the same as the diameter of the anesthetic needle 15.

[0059] The pressure rod 13 is opened and closed by moving it up and down in the hollow groove of the outer shell 12. The device can make a reflective surface composed of three mutually perpendicular planes inwardly recessed on the surface of the anesthetic needle.

[0060] When the cover plate 10, outer support plate 8, inner support plate 7, and pressure plate 1 are all in the same horizontal position and the diameter of the central hole is exactly the same as the diameter of the anesthesia needle 15, the anesthesia needle 15 can achieve self-centering through the structure of this device.

[0061] The pressure plate 1 is made of biosafe hard alloy material and has good hardness.

[0062] The inner support plate 7, outer support plate 8, fixing plate 9, pressure rod 13, and support rod 14 are made of biosafe magnesium alloy material, which has good strength and low density.

[0063] The pressure knife positioning shaft 2, pressure knife drive shaft 3, connecting rod 4, sleeve connecting shaft 5, cover plate 10, outer shell 12, and limiting top shaft 11 are made of biosafe medical stainless steel and have good strength.

[0064] The operation and use process of the anesthesia needle marking device in this embodiment is as follows:

[0065] Step S1: Place the anesthesia needle marking device for ultrasound imaging positioning into an autoclave for sterilization;

[0066] Step S2: Place the anesthesia needle marking device for ultrasound imaging positioning on a horizontal platform in a sterile surgical environment and pull the lever upward to the maximum opening position;

[0067] Step S3: Insert the anesthetic needle 15 into the small hole in the middle of the cover plate 10, and push the anesthetic needle 15 in until it touches the limiting top shaft;

[0068] Step S4: Press the pressure rod 13 of the anesthesia needle marking device that realizes ultrasound imaging positioning down to the bottom of the groove of the outer shell 12, and the inner pressure tip 18 of the pressure plate 1 will mark the anesthesia needle 15 with three mutually perpendicular concave marks.

[0069] Step S5: Lift the lever 13 of the anesthesia needle marking device that enables ultrasound imaging and positioning upwards to open the pressure plate 1 and inner support plate 7 assembly;

[0070] Step S6: Remove the anesthetic needle 15. At this point, the anesthetic needle has been modified into a special anesthetic needle that can be located by ultrasound imaging and is ready for the next step of the surgery.

[0071] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Any person skilled in the art can make many possible variations and modifications to the technical solution of this utility model using the disclosed methods and techniques, or modify it into equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of this utility model. Therefore, all equivalent changes made based on the shape, structure, and principle of this utility model without departing from its technical solution should be covered within the protection scope of this utility model.

Claims

1. A device for marking anesthesia needles using ultrasound imaging for localization, characterized in that, It comprises a pressing knife plate (1), an inner support plate (7), an outer support plate (8), a rotating sleeve (6) and a shell (12); The inner side pressing knife tip (18) of the pressing knife plate (1) is used for marking the three concave marks of the anesthetic needle (15) which are perpendicular to each other after being fixed by four pressing knife plates (1) with the same shape structure; One of the top corner inner angles of the pressing knife plate (1) is provided with a pressing knife positioning shaft hole (16), and the pressing knife positioning shaft (2) is inserted through the pressing knife positioning shaft hole (16); the other top corner inner angle of the pressing knife plate (1) is provided with a pressing knife plate driving shaft hole (17), and the pressing knife driving shaft (3) is inserted through the pressing knife plate driving shaft hole (17); The pressure driving shaft (3) is inserted into one end of the connecting rod (4), the other end of the connecting rod (4) is connected with the sleeve connecting shaft (5) through a hole, the sleeve connecting shaft (5) is sleeved on the rotating sleeve (6), and the two ends of the sleeve connecting shaft (5) are inserted into the shell (12).

2. The device for marking an anesthetic needle according to claim 1, wherein One end of the shell (12) is provided with a hollow groove, the pressing rod (13) is inserted through the hollow groove of the shell (12) and is fixed with the rotating sleeve (6) through threads; The outer ends of the pressing knife driving shaft (3) and the pressing knife positioning shaft (2) are penetrated on the fixed disc (9), wherein the fixed disc (9) is provided with a guide groove for guiding the pressing knife driving shaft (3); The cover plate (10) is fixedly connected with the shell (12) through screws, and the cover plate (10) is provided with a hole with the same diameter as the anesthetic needle (15); The shell (12) is fixedly connected with the support rod (14) through threads.

3. The device for marking an anesthetic needle according to claim 1, wherein The outer edges of the inner support plate (7) are provided with circular holes at the corresponding two top corner inner angles, which are respectively an inner support plate positioning shaft hole (21) and an inner support plate driving shaft hole (20); the inner support plate positioning shaft hole (21) is connected with the pressing knife positioning shaft (2), and the inner support plate driving shaft hole (20) is connected with the pressure driving shaft (3); four inner support plates (7) with the same shape structure and central symmetry are fixed and tightened to form a containing hole for the anesthetic needle (15) to pass through; The outer edges of the outer support plate (8) are provided with circular holes at the corresponding two top corner inner angles, which are respectively an outer support plate positioning shaft hole (28) and an outer support plate driving shaft hole (29); the outer support plate positioning shaft hole (28) is connected with the pressing knife positioning shaft (2), and the outer support plate driving shaft hole (29) is connected with the pressure driving shaft (3); four outer support plates (8) with the same shape structure and central symmetry are fixed and tightened to form a containing hole for the anesthetic needle (15) to pass through.

4. The device for marking an anesthetic needle according to claim 1, wherein Every four pressing knife plates (1) form a pressing knife unit, which is arranged symmetrically around the central axis of the rotating sleeve (6); every four inner support plates (7) form an inner support unit, which is arranged symmetrically around the central axis of the rotating sleeve (6); every four outer support plates (8) form an outer support unit, which is arranged symmetrically around the central axis of the rotating sleeve (6); The five groups of pressing knife units composed of the pressing knife plates (1) are arranged; the two groups of inner support units composed of the inner support plates (7) are arranged; the two groups of outer support units composed of the outer support plates (8) are arranged; The tip of the anesthetic needle (15) is taken as the starting position, and a group of outer support units are arranged at the starting point of the needle tip, three groups of pressure cutter units are arranged close to the outer support units, a group of inner support units are arranged close to the pressure cutter units, a group of pressure cutter units are arranged close to the inner support units, and a group of outer support units are arranged close to the pressure cutter units, which are sequentially and closely arranged in the rotating sleeve (6).

5. The device for marking an anesthetic needle according to claim 4, wherein The tip of the anesthetic needle (15) is taken as the starting position, and the pressure cutter units from near to far from the tip of the anesthetic needle (15) are the first group of pressure cutter units, the second group of pressure cutter units, the third group of pressure cutter units, the fourth group of pressure cutter units, and the fifth group of pressure cutter units; The distance from the three mutually perpendicular concave marks engraved by the first group of pressure cutter units to the tip of the anesthetic needle (15) is equal to the distance from the three mutually perpendicular concave marks engraved by the first group of pressure cutter units to the three mutually perpendicular concave marks engraved by the second group of pressure cutter units. The distance from the three mutually perpendicular concave marks engraved by the first group of pressure cutter units to the three mutually perpendicular concave marks engraved by the second group of pressure cutter units is equal to the distance from the three mutually perpendicular concave marks engraved by the second group of pressure cutter units to the three mutually perpendicular concave marks engraved by the third group of pressure cutter units. The three times distance from the three mutually perpendicular concave marks engraved by the second group of pressure cutter units to the three mutually perpendicular concave marks engraved by the third group of pressure cutter units is consistent with the distance from the three mutually perpendicular concave marks engraved by the third group of pressure cutter units to the three mutually perpendicular concave marks engraved by the fourth group of pressure cutter units. The distance from the three mutually perpendicular concave marks engraved by the third group of pressure cutter units to the three mutually perpendicular concave marks engraved by the fourth group of pressure cutter units is equal to the distance from the three mutually perpendicular concave marks engraved by the fourth group of pressure cutter units to the three mutually perpendicular concave marks engraved by the fifth group of pressure cutter units. The position of the needle head of the anesthetic needle (15) is confirmed by the different distances of the concave marks.

6. The device for marking an anesthetic needle according to claim 1, wherein The pressure cutter plate (1) is composed of an inner pressure cutter tip (18), a pressure cutter plate outer arc-shaped edge (19), a pressure cutter positioning shaft hole (16), and a pressure cutter plate driving shaft hole (17), and the inner pressure cutter tip (18) is the intersection point of three mutually perpendicular planes; The inner support plate (7) is composed of an inner support plate positioning shaft hole (21), an inner support plate driving shaft hole (20), an inner support plate needle clamping groove (22), an inner support plate inner concave edge (23), an inner support plate inner convex edge (25), and an inner support plate outer convex edge (24), and the hole diameter of the inner support plate needle clamping groove (22) is the same as the diameter of the anesthetic needle (15); The outer support plate (8) is composed of an outer support plate positioning shaft hole (28), an outer support plate driving shaft hole (29), an outer support plate clamping groove (26), an outer support plate inner concave edge (27), an outer support plate inner convex edge (31), and an outer support plate needle clamping groove (30), and the hole diameter of the outer support plate needle clamping groove (30) is the same as the diameter of the anesthetic needle (15).

7. The device for marking an anesthetic needle according to claim 2, wherein The pressure rod (13) is opened and closed by being pulled up and down on the hollowed-out groove of the shell (12), thereby engraving an inwardly recessed reflecting surface composed of three mutually perpendicular planes on the surface of the anesthetic needle.

8. The device for marking an anesthetic needle according to claim 2, wherein The cover plate (10), the outer support plate (8), the inner support plate (7) and the pressing knife plate (1) are in the same horizontal position in the fully closed state, and the central hole diameter is consistent with the diameter of the anesthetic needle (15), so that the anesthetic needle (15) is self-centered.

9. The device for marking an anesthetic needle according to claim 1, wherein The pressing knife plate (1) is a biological safety metal hard alloy material; the inner support plate (7), the outer support plate (8), the fixed disc (9), the pressing rod (13) and the support rod (14) are biological safety magnesium alloy materials; the pressing knife positioning shaft (2), the pressing knife driving shaft (3), the connecting rod (4), the sleeve connecting shaft (5), the cover plate (10), the shell (12) and the limiting top shaft (11) are biological safety medical stainless steel materials.

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