Acupuncture protection device and method

Abstract

The invention discloses an acupuncture protection device and method, and belongs to the technical field of infusion needle protection tools, the acupuncture protection device comprises a base, the lower end of the base is detachably connected with a fixing plate through a screw, a pasting notch is formed between the fixing plate and the base, and a pasting adhesive tape is pasted in the pasting notch. According to the infusion apparatus, when a medium between the two induction sheets changes after infusion is completed, a control template can detect the change of a capacitance value between the two induction sheets at the moment, after the control template detects the capacitance change, a driving motor is immediately powered on, so that an abutting block is separated from a hole groove, and at the moment, a force application rod is immediately lifted upwards under the action of a torsion spring; by means of the mode, the situation that the patient and the medical staff miss the needle withdrawing time to cause blood return can be avoided, and the problem that when the medical staff withdraws the needle with hands, the needle head scratches the hands of the medical staff to cause infection can also be avoided.

Description

Technical Field

[0001] The invention relates to the technical field of infusion needle protection tools, in particular to an acupuncture protection device and method. Background Art

[0002] In hospitals and clinics, medical staff often need to give injections to patients who need intravenous drips, and after the drip is completed, medical staff also need to remove the needle for the patient. During the process of needle insertion and removal, the needle can easily injure the medical staff. Many viruses can be transmitted through the blood. After the medical staff is injured by the needle pulled out of the patient's blood vessel, it is extremely easy for the medical staff to be infected. Moreover, during the process of intravenous drip, both the patient and the medical staff need to pay attention to whether the drip is completed. Neither the medical staff nor the patients themselves can pay attention to the drip situation all the time, and it is easy for the drip to be completed without the medical staff and the patient not noticing, resulting in blood return problems.

[0003] A Chinese patent discloses a protective device for intravenous infusion needles, with the publication number (CN208877555U). The patent requires the needle to be aligned with the second limiter and the third limiter before the needle can be extended to inject the patient; before and after use, the needle is retracted in the cavity to prevent the needle from being exposed and stabbing other people, thereby avoiding cross infection. However, the patent provides protection after the needle is pulled out, and cannot provide protection during the needle pulling process. Therefore, the present invention provides a needle puncture protection device and method to solve the above-mentioned problems. Summary of the invention

[0004] The object of the present invention is to provide a needle stick protection device and method to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: A needle stick protection device comprises a base, wherein the lower end of the base is detachably connected to a fixing plate by screws, and an adhesive gap is provided between the fixing plate and the base, and an adhesive tape is pasted in the adhesive gap, the upper end of the base is rotatably connected to a force rod, and a torsion spring is provided at the rotation connection between the force rod and the base, and a detection structure for detecting an infusion state is fixedly connected to the side end of the base, and whether the infusion is completed can be detected in time by the detection structure to avoid the problem of blood return; The base is internally movably connected with a positioning sleeve for positioning and pushing the needle, and a pushing rod is symmetrically fixedly connected to the outer wall of the positioning sleeve. A track slide matched with the pushing rod is provided on the outer wall of the base. The needle can be accurately inserted into the patient's blood vessel through the track slide, and a recovery window is provided below the track slide. The recovery window is connected to the track slide, so that the needle can move along the track of the track slide to increase the accuracy of the needle.

[0006] As a further solution of the present invention, the positioning sleeve includes a first sleeve and a second sleeve, the first sleeve and the second sleeve are symmetrically arranged, and a transition notch is opened on the outer wall of the first sleeve. The transition notch can prevent the side plate on the outer wall of the needle from being blocked by the first sleeve.

[0007] As a further solution of the present invention, the upper ends of the first sleeve and the second sleeve are fixedly connected with a contact rod, the upper end of the base is provided with a vertical transition window and a horizontal transition window, and the contact rod is adapted to the vertical transition window and the horizontal transition window, a transition rod is slidably connected between the two contact rods, one end of the transition rod away from the contact rod is rotatably connected to a pressure rod through a movable shaft, and one end of the pressure rod away from the transition rod is rotatably connected to a force rod, so that power transmission is facilitated through the pressure rod.

[0008] As a further solution of the present invention, a blocking bar is slidably connected in the first sleeve, and a rubber sleeve is fixedly connected to one end of the blocking bar close to the second sleeve, and one end of the blocking bar away from the second sleeve is located in the transition notch. The setting of the blocking bar can increase the stability of the needle.

[0009] As a further solution of the present invention, the pushing rod includes a fixed rod, and the ends of the two fixed rods that are away from each other are fixedly connected to a sliding rod, the external sliding sleeve of the sliding rod is provided with a limit sleeve, a return spring is fixedly connected between the limit sleeve and the fixed rod, and the limit sleeve is located in the track slide.

[0010] As a further solution of the present invention, the end of the limit sleeve away from the fixed rod is slidably connected to a pushing block, the pushing block is fixedly connected to the sliding rod, the end of the push block away from the limit sleeve is fixedly connected to an extrusion disc, and the extrusion disc is located outside the base, so that the user can control the closing of the first sleeve and the second sleeve through the extrusion disc.

[0011] As a further solution of the present invention, the detection structure includes a mounting tube, a detection groove is provided on the outer wall of the mounting tube, and two sensor plates for detecting whether there is liquid in the infusion tube are symmetrically fixedly connected on the inner wall of the detection groove, thereby accurately detecting the infusion status and avoiding the occurrence of blood backflow.

[0012] As a further solution of the present invention, a limiting structure for limiting the force rod is installed at one end of the mounting tube close to the base, and the limiting structure includes a sliding block, which is slidably connected to the mounting tube. A driving motor is also fixedly connected to the interior of the mounting tube. The driving motor can quickly control the abutment block to separate from the force rod, thereby completing the operation of automatic needle removal.

[0013] As a further solution of the present invention, a threaded sleeve is fixedly mounted on the rotating shaft of the driving motor, the threaded sleeve is threadedly connected to the sliding block, and a retractable rod is slidably connected to one end of the sliding block away from the driving motor.

[0014] As a further solution of the present invention, the end of the retractable rod away from the sliding block is fixedly connected to the abutment block, the outer sleeve of the retractable rod is provided with a connecting spring, and the end of the force rod close to the mounting tube is provided with a hole groove, which is adapted to the abutment block.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. When the present invention is used, the medium between the two sensor sheets will change after the infusion is completed. At this time, the control template will detect the change in the capacitance value between the two sensor sheets. When the control template detects the change in capacitance, it will immediately energize the drive motor to make the abutment block disengage from the hole groove. At this time, the force rod will immediately lift upward under the action of the torsion spring. During the upward lifting of the force rod, the positioning sleeve will immediately be driven to move toward the direction of the mounting tube, thereby automatically pulling the needle out of the patient's blood vessel. In this way, not only can the patient and medical staff avoid missing the opportunity to remove the needle and causing blood return, but also the problem of the medical staff's hand being scratched by the needle and causing infection can be avoided when the medical staff removes the needle by hand.

[0016] 2. When the present invention is used, when the first sleeve and the second sleeve are close to each other, the second sleeve will squeeze the rubber sleeve, and the blocking strip at one end of the transition notch will completely block the transition notch, thereby limiting the needle through the side plate on the outer wall of the needle, avoiding the problem of movement of the needle during acupuncture, thereby making the acupuncture more accurate.

[0017] 3. When the present invention is used, the push rod will move on the track slide during the movement of the positioning sleeve. The positioning sleeve will first move horizontally and then move downward. After the downward movement is completed, it will move upward again, then move horizontally, and then move downward at an angle. Acupuncture through this trajectory can simulate the normal acupuncture of patients by medical staff, thereby avoiding puncture of blood vessels. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The figure is a schematic diagram of the structure of a needle puncture protection device.

[0019] Figure 2 The present invention is a three-dimensional diagram of a needle stick protection device.

[0020] Figure 3 A disassembled diagram of a needle puncture protection device.

[0021] Figure 4 The present invention is a structural diagram of a track slide in a needle puncture protection device.

[0022] Figure 5 The present invention is a structural diagram of a positioning sleeve in a needle puncture protection device.

[0023] Figure 6 The present invention is a top view of a base in a needle stick protection device.

[0024] Figure 7 A needle stick protection device Figure 5 A magnified schematic diagram of center A.

[0025] Figure 8 This is a disassembled diagram of the detection structure in a needle stick protection device.

[0026] Fig. 9 A schematic diagram of the use of a needlestick protection device.

[0027] Fig.10 The present invention is a structural diagram of a first sleeve in a needle puncture protection device.

[0028] In the figure: 1. base; 2. fixing plate; 3. battery storage compartment; 4. force rod; 5. positioning sleeve; 6. needle; 7. pressure rod; 8. storage slot; 9. detection structure; 10. adhesive tape; 11. push rod; 100, vertical transition window; 101, horizontal transition window; 102, track slide; 103, limit groove; 104, recovery window; 500, first sleeve; 501, second sleeve; 502, transition notch; 503, contact rod; 504, transition rod; 505, connecting rod; 506, shaft; 507, movable shaft; 508, fixed rod; 509, limit sleeve; 510, push block; 511, slide rod; 512, return spring; 513, blocking strip; 514, rubber sleeve; 900, mounting cylinder; 901, detection slot; 902, induction sheet; 903, control template; 904, fixing ring; 905, sliding block; 906, driving motor; 907, abutment block; 908, retracting rod; 909, connecting spring; 910, winding area. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Embodiment 1 See also Figure 1-3, in the embodiment of the present invention, a needle puncture protection device includes a base 1. The lower end of the base 1 is detachably connected to a fixing plate 2 by screws, and there is a sticking gap between the fixing plate 2 and the base 1. Specifically, the size of the sticking gap is adjustable. By rotating the screw into the depth inside the base 1, the distance between the fixing plate 2 and the base 1 can be controlled, and thus the size of the sticking gap can be controlled. A sticking tape 10 is pasted in the sticking gap. When in use, the fixing plate 2 is placed on the skin surface of the patient's limb, and finally the sticking tape 10 is pasted on the patient's limb. The upper end of the base 1 is rotatably connected to a force application rod 4 by a rotating shaft, and a torsion spring is arranged at the rotating connection between the force application rod 4 and the base 1. The torsion spring is sleeved outside the rotating shaft. When the force application rod 4 is pressed down, the torsion spring will store energy, thereby giving the force application rod 4 a force in the direction away from the base 1. The upper end of the base 1 is fixedly connected with a power storage bin 3. A power supply battery is arranged in the power storage bin 3, and a storage groove 8 is arranged at the upper end of the power storage bin 3. The storage groove 8 is adapted to the force application rod 4, that is, the force application rod 4 can be stored in the storage groove 8. A detection structure 9 for detecting the infusion state is fixedly connected to the side end of the base 1; A positioning sleeve 5 for positioning and pushing the needle 6 is movably connected inside the base 1. Specifically, the base 1 is arranged in a "U" shape. Push rods 11 are symmetrically and fixedly connected to the outer wall of the positioning sleeve 5. A track slideway 102 adapted to the push rods 11 is opened on the outer wall of the base 1. Through the track slideway 102, the needle 6 can accurately penetrate into the patient's blood vessel, and a recovery window 104 is arranged below the track slideway 102. The recovery window 104 is communicated with the track slideway 102, and the recovery window 104 is arranged in a "one" shape.

[0031] Embodiment Two Please refer to Figure 3-7 , on the basis of combining Embodiment 1, the positioning sleeve 5 includes a first sleeve 500 and a second sleeve 501, and both the first sleeve 500 and the second sleeve 501 have magnetism, and the first sleeve 500 and the second sleeve 501 can attract each other. The first sleeve 500 and the second sleeve 501 are symmetrically arranged. Please refer to Figure 2 , the first sleeve 500 is close to the right inner wall of the base 1. A transition notch 502 is opened on the outer wall of the first sleeve 500. Through the transition notch 502, the side plate on the outer wall of the needle 6 can be prevented from being blocked by the first sleeve 500. Among them, the side plate is a convex plate on the side wall of the needle 6 in the prior art. When medical staff inject a needle into a patient, they will hold the convex plate and then accurately insert the needle 6 into the blood vessel; The upper ends of the first sleeve 500 and the second sleeve 501 are fixedly connected with a contact rod 503, and the two contact rods 503 can be spliced ​​into a cylindrical rod. The upper end of the base 1 is provided with a vertical transition window 100 and a horizontal transition window 101 that cooperate with the cylindrical rod. The vertical transition window 100 and the horizontal transition window 101 are connected to each other in a "T" shape, and the two contact rods 503 are in the horizontal transition window 101 when not spliced ​​together. A transition rod 504 is slidably connected between the two contact rods 503, and the end of the transition rod 504 away from the contact rod 503 is rotatably connected to the pressure rod 7 through a movable shaft 507. The end of the pressure rod 7 away from the transition rod 504 is rotatably connected to the force application rod 4, and the width of the vertical transition window 100 is greater than the width of the pressure rod 7. For details, please refer to Figure 7 , a shaft rod 506 is slidably connected between the two contact rods 503, and the shaft rod 506 is fixedly connected to the transition rod 504 through a connecting rod 505, and the length of the shaft rod 506 is less than the width of the vertical transition window 100; See also Fig.10 In order to prevent the needle 6 from sliding in the first sleeve 500 and the second sleeve 501 during the process of piercing the patient's blood vessel, a blocking strip 513 is slidably connected in the first sleeve 500. Specifically, an arc-shaped channel is opened inside the first sleeve 500. The blocking strip 513 is a steel wire strip, and the blocking strip 513 is located in the arc-shaped channel. The end of the blocking strip 513 close to the second sleeve 501 is fixedly connected with a rubber sleeve 514, and the end of the blocking strip 513 away from the second sleeve 501 is located in the transition notch 502. For details, please refer to Fig.10 The rubber sleeve 514 is set to be conical, and the left end of the rubber sleeve 514 is fixedly connected to the left end of the blocking strip 513, and the right end of the rubber sleeve 514 is slidably connected to the blocking strip 513. More specifically, a groove is provided at one end of the second sleeve 501 close to the first sleeve 500, and the groove corresponds to the rubber sleeve 514, and the depth of the groove is less than the length of the rubber sleeve 514. When the first sleeve 500 and the second sleeve 501 are attached to each other, the rubber sleeve 514 can be stored to prevent the rubber sleeve 514 from blocking the first sleeve 500 and the second sleeve 501 from being sucked together; The push rod 11 includes a fixed rod 508, which is fixedly connected to the first sleeve 500 and the second sleeve 501 respectively. The ends of the two fixed rods 508 that are away from each other are fixedly connected to a sliding rod 511. The outer sliding sleeve of the sliding rod 511 is provided with a limiting sleeve 509. A return spring 512 is fixedly connected between the limiting sleeve 509 and the fixed rod 508, and the limiting sleeve 509 is located in the track slide 102. The end of the limiting sleeve 509 away from the fixed rod 508 is slidably connected to a pushing block 510, and the pushing block 510 is fixedly connected to the sliding rod 511. The end of the pushing block 510 away from the limiting sleeve 509 is fixedly connected to an extrusion disc, and the extrusion disc is located outside the base 1. In order to prevent the limiting sleeve 509 from moving toward the direction close to the positioning sleeve 5 when the extrusion disc is pressed, a raised ring is fixedly connected to the outer wall of the limiting sleeve 509, and a limiting groove 103 corresponding to the raised ring is opened on the inner wall of the track slide 102 and the recovery window 104, and the raised ring is located in the limiting groove 103.

[0032] Embodiment 3 Please refer to Figure 8 Based on Example 1, the detection structure 9 includes a mounting tube 900, a winding area 910 for winding the infusion tube is provided on the outside of the mounting tube 900, a spiral groove is provided inside the winding area 910, and a detection groove 901 is also provided on the outer wall of the mounting tube 900. Two sensing sheets 902 for detecting whether there is liquid in the infusion tube are symmetrically fixedly connected on the inner wall of the detection groove 901. The sensing sheet 902 is a copper ring. A notch is provided at the lower end of the detection groove 901, and the detection groove 901 and the winding area 910 can be connected through the notch, so as to facilitate the storage of the infusion tube. A control template 903 is installed in the mounting tube 900, and the positive and negative electrodes inside the power storage bin 3 are connected to the power supply pins of the control template 903 through wires; The principle of using two sensing sheets 902 to detect whether there is liquid in the infusion tube is that the capacitance value of the capacitor depends on the medium properties (i.e., dielectric constant) between the two plates of the capacitor and the geometric parameters (area and distance) of the plates. In this detection method, the sensing sheets 902 serve as the two plates of the capacitor and are closely attached to the outside of the infusion tube. When liquid flows through the infusion tube, the liquid acts as a dielectric and affects the capacitance value of the capacitor. The specific formula is: ,in, is the relative permittivity of the medium (liquid or air), is the dielectric constant of vacuum; A is the area of ​​the sensing plate 902; d is the distance between the two sensing plates 902. When d and A are both constants, When the value of changes, the control template 903 will detect it; Please refer to Figure 8, a fixing ring 904 is fixedly connected to one end of the mounting tube 900 close to the base 1, and the fixing ring 904 is connected to the base 1 through a fixing tube, and the wire in the power storage bin 3 is located in the fixing tube, and a limiting structure for limiting the force rod 4 is installed at one end of the mounting tube 900 close to the base 1, and the limiting structure includes a sliding block 905, and the sliding block 905 is slidably connected to the mounting tube 900. Specifically, a rectangular window is opened at one end of the mounting tube 900 close to the base 1, and the sliding block 905 is located in the rectangular window, and the sliding block 905 can slide in the rectangular window. A driving motor 906 is also fixedly connected to the inside of the mounting tube 900, and the driving motor 906 is a 610 micro motor, and the power supply voltage of the 610 micro motor is 3-9V, and the dimensions are length: 10MM, width: 6MM, and shaft length: 2MM; A threaded sleeve is attached to the rotating shaft of the driving motor 906 by strong glue, and the threaded sleeve is threadedly connected to the sliding block 905, and the end of the sliding block 905 away from the driving motor 906 is slidably connected to a retractable rod 908, and the end of the retractable rod 908 away from the sliding block 905 is fixedly connected to an abutment block 907, and the outer sleeve of the retractable rod 908 is provided with a connecting spring 909, and a hole groove is provided at the end of the force rod 4 close to the mounting tube 900, and the hole groove is adapted to the abutment block 907, and an inclined surface is provided on the upper end of the abutment block 907, so as to prevent the abutment block 907 from blocking the movement of the force rod 4.

[0033] The working principle of the present invention is: When the present invention is used, the needle 6 is first inserted into the positioning sleeve 5 from the right end of the base 1, and then the thumb and index finger are used to squeeze the pushing block 510 in the direction of the side wall of the base 1. When the pushing block 510 is squeezed, the first sleeve 500 and the second sleeve 501 are pushed through the sliding rod 511 and the fixing rod 508, so that the first sleeve 500 and the second sleeve 501 fit each other. At this time, the positioning sleeve 5 will completely wrap the needle 6, and when the first sleeve 500 and the second sleeve 501 are close to each other, the second sleeve 501 will squeeze the rubber sleeve 514. When the rubber sleeve 514 is squeezed, the blocking bar 513 will be pushed, and the end of the blocking bar 513 located at the transition notch 502 will completely block the transition notch 502, so that the needle 6 is restricted by the side plate on the outer wall of the needle 6, so as to avoid the problem of movement of the needle 6 during acupuncture, thereby making the acupuncture more accurate; When the first sleeve 500 and the second sleeve 501 are fitted together, the two contact rods 503 are also fitted together, so that the contact rods 503 can pass through the vertical transition window 100 normally; Please refer to Fig. 9When the needle 6 is connected to the positioning sleeve 5, the base 1 is pasted on the patient's skin surface, and then the force rod 4 is pressed down. During the process of the force rod 4 being pressed down, the pressure rod 7 will push the positioning sleeve 5 to move through the transition rod 504. During the movement of the positioning sleeve 5, the push rod 11 will move on the track slide 102. During the movement, the positioning sleeve 5 will first move horizontally, and then move downward. After the downward movement stroke is completed, it will move upward again, then move horizontally, and then move downward at an angle. At this time, the distance of the inclined downward movement is shorter than the distance of the initial downward movement. This kind of trajectory can simulate normal acupuncture. The medical staff inserts an acupuncture needle into the patient to avoid puncturing the blood vessels (the medical staff first tilts the needle 6 to pierce the skin and blood vessels, then lifts the needle 6 upward and pushes it horizontally to move the needle 6 in the blood vessel, and finally flattens the needle 6 downward to fix the needle 6). When the force rod 4 is pressed down, the needle 6 will no longer move, and the force rod 4 will push the abutment block 907 during the pressing process. At this time, the abutment block 907 will compress the connecting spring 909. When the hole groove of the force rod 4 corresponds to the abutment block 907, the abutment block 907 will be inserted into the hole groove, thereby limiting the force rod 4. When the force rod 4 is restricted, the thin infusion tube at the tail of the needle 6 is wound around the winding area 910 and the detection groove 901. When the infusion is completed, the medium between the two sensing sheets 902 will change. At this time, the control template 903 will detect the change in the capacitance value between the two sensing sheets 902. When the control template 903 detects the capacitance change, it will immediately energize the drive motor 906. After the drive motor 906 is energized, it will immediately drive the threaded sleeve to rotate. When the threaded sleeve rotates, it will drive the sliding block 905 to move into the installation tube 900. When the block 905 moves, it will drive the abutment block 907 to leave the hole groove. At this time, the force rod 4 will be immediately lifted upward under the action of the torsion spring. During the upward lifting process of the force rod 4, the positioning sleeve 5 will be immediately driven to move in the direction of the installation cylinder 900, thereby automatically pulling out the needle 6 from the patient's blood vessel. Finally, the medical staff can remove the base 1 and disinfect the patient's skin with alcohol cotton. This method can not only prevent the patient and medical staff from missing the opportunity to remove the needle, but also prevent the medical staff from scratching the hands of the medical staff when the needle is pulled out by hand. Finally, pull the two slide bars 511 to separate the first sleeve 500 and the second sleeve 501. When the first sleeve 500 and the second sleeve 501 are separated, the rubber sleeve 514 will be released from the compressed state, and the rubber sleeve 514 will restore its shape, thereby resetting the blocking bar 513, thereby facilitating the removal of the needle 6.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A needlestick protection device, comprising a base (1), characterized in that: The lower end of the base (1) is detachably connected to a fixing plate (2) via screws, and a pasting notch is provided between the fixing plate (2) and the base (1), in which a pasting tape (10) is pasted, the upper end of the base (1) is rotatably connected to a force rod (4), and a torsion spring is provided at the rotatable connection between the force rod (4) and the base (1), and a detection structure (9) for detecting an infusion state is fixedly connected to the side end of the base (1); A positioning sleeve (5) for positioning and pushing the needle (6) is movably connected inside the base (1); a pushing rod (11) is symmetrically fixedly connected to the outer wall of the positioning sleeve (5); a track slide (102) adapted to the pushing rod (11) is provided on the outer wall of the base (1); the needle (6) can be accurately inserted into a patient's blood vessel through the track slide (102); and a recovery window (104) is provided below the track slide (102); the recovery window (104) is connected to the track slide (102).

2. A needle stick protection device according to claim 1, characterized in that: The positioning sleeve (5) comprises a first sleeve (500) and a second sleeve (501), wherein the first sleeve (500) and the second sleeve (501) are symmetrically arranged, and a transition notch (502) is provided on the outer wall of the first sleeve (500), so that the side plate on the outer wall of the needle (6) can be prevented from being blocked by the first sleeve (500).

3. A needle stick protection device according to claim 2, characterized in that: The upper ends of the first sleeve (500) and the second sleeve (501) are both fixedly connected to a contact rod (503); the upper end of the base (1) is provided with a vertical transition window (100) and a horizontal transition window (101), and the contact rod (503) is adapted to the vertical transition window (100) and the horizontal transition window (101); a transition rod (504) is slidably connected between the two contact rods (503); one end of the transition rod (504) away from the contact rod (503) is rotatably connected to a pressure rod (7) via a movable shaft (507); and one end of the pressure rod (7) away from the transition rod (504) is rotatably connected to a force application rod (4).

4. A needle stick protection device according to claim 3, characterized in that: A blocking strip (513) is slidably connected inside the first sleeve (500), one end of the blocking strip (513) close to the second sleeve (501) is fixedly connected to a rubber sleeve (514), and one end of the blocking strip (513) away from the second sleeve (501) is located in the transition notch (502).

5. The needle stick protection device according to claim 1, characterized in that: The push rod (11) comprises a fixed rod (508), and ends of the two fixed rods (508) that are away from each other are fixedly connected to a sliding rod (511), and an external sliding sleeve of the sliding rod (511) is provided with a limiting sleeve (509), and a return spring (512) is fixedly connected between the limiting sleeve (509) and the fixed rod (508), and the limiting sleeve (509) is located in the track slideway (102).

6. A needle stick protection device according to claim 5, characterized in that: One end of the limiting sleeve (509) away from the fixed rod (508) is slidably connected to a pushing block (510), and the pushing block (510) is fixedly connected to the sliding rod (511). One end of the pushing block (510) away from the limiting sleeve (509) is fixedly connected to an extrusion disc, and the extrusion disc is located outside the base (1).

7. The needle stick protection device according to claim 1, characterized in that: The detection structure (9) comprises a mounting tube (900), the outer wall of the mounting tube (900) is provided with a detection groove (901), and the inner wall of the detection groove (901) is symmetrically fixedly connected with two sensing sheets (902) for detecting whether there is liquid in the infusion tube.

8. The needle stick protection device according to claim 7, characterized in that: A limiting structure for limiting the force-applying rod (4) is installed at one end of the installation tube (900) close to the base (1), and the limiting structure includes a sliding block (905). The sliding block (905) is slidably connected to the installation tube (900), and a driving motor (906) is also fixedly connected to the interior of the installation tube (900).

9. A needle stick protection device according to claim 8, characterized in that: A threaded sleeve is fixedly mounted on the rotating shaft of the driving motor (906), the threaded sleeve is threadedly connected to the sliding block (905), and the end of the sliding block (905) away from the driving motor (906) is slidably connected to a retractable rod (908), the end of the retractable rod (908) away from the sliding block (905) is fixedly connected to an abutment block (907), the outer sleeve of the retractable rod (908) is provided with a connecting spring (909), and a hole groove is formed at one end of the force application rod (4) close to the mounting tube (900), and the hole groove is adapted to the abutment block (907).

10. A method of using a needle puncture protection device, used for a needle puncture protection device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: insert the needle (6) from the right end of the base (1) into the positioning sleeve (5), and then make the first sleeve (500) and the second sleeve (501) fit each other. At this time, the positioning sleeve (5) will completely wrap the needle (6), and at this time, the end of the blocking strip (513) located at the transition gap (502) will completely block the transition gap (502), so that the needle (6) is restricted by the side plate on the outer wall of the needle (6), so as to avoid the problem of movement of the needle (6) during acupuncture; S2: The base (1) is attached to the patient's skin surface, and the force-applying rod (4) is pressed downward to move the push rod (11) along the track slide (102). At this time, the positioning sleeve (5) moves along the shape of the track slide (102). This track acupuncture can simulate the normal acupuncture of a patient by medical staff, thereby preventing the blood vessels from being punctured; S3: During use, after the infusion is completed, the medium between the two sensing sheets (902) will change. At this time, the control template (903) will detect the change in the capacitance value between the two sensing sheets (902). When the control template (903) detects the change in capacitance, it will immediately energize the drive motor (906) to make the abutment block (907) disengage from the hole groove. At this time, the force rod (4) will immediately lift upward under the action of the torsion spring. In the process of lifting the force rod (4), the positioning sleeve (5) will immediately move in the direction of the installation cylinder (900), thereby automatically pulling the needle (6) out of the patient's blood vessel. In this way, not only can the patient and medical staff be prevented from missing the opportunity to remove the needle, but also the needle (6) can be prevented from scratching the medical staff's hands when the medical staff remove the needle by hand.

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