Anesthesia intervention puncture outfit
By designing the flip structure and push structure of the anesthesia interventional puncture device in conjunction, the problems of easy blockage of the fine needle and difficult angle control are solved, the stability and safety of the intrathecal anesthesia operation are achieved, and the success rate and accuracy of the injection are improved.
Patent Information
- Application Number
- CN202511091572.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-05
- Publication Date
- 2025-09-12
AI Technical Summary
During spinal anesthesia operations, the slender inner needle is easily blocked by the target tissue, making injection difficult. It is also difficult for medical staff to accurately control the angle and position of the needle tip. The operating space is small, which can easily lead to nerve damage or poor anesthesia effect.
An anesthesia interventional puncture device is designed, which includes a positioning outer needle, a connecting cavity, a flip structure, a pushing structure, a fine-tuning rotation structure and an inner needle injection structure. Through the linkage of the flip structure and the pushing structure, the fixation and angle fine-tuning of the inner needle are achieved, thereby reducing the risk of deviation caused by hand shaking and providing stable support for the positioning outer needle after the injection is completed.
It improves the stability and success rate of anesthesia injection, reduces the risk of internal needle deviation, ensures the safety and accuracy of the operation, and avoids nerve damage caused by hand tremors or uneven force.
Smart Images
Figure CN120616728A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of medical equipment, and in particular to an anesthesia interventional puncture device. Background Art
[0002] In clinical anesthesia, especially during spinal anesthesia (such as spinal anesthesia and epidural anesthesia), the "needle in needle" technique is commonly used, that is, a relatively thick and hard positioning outer needle is first punctured into the target area such as the epidural space, and then a thinner inner needle is further inserted through the lumen of the outer needle into the deeper target tissue (such as the subarachnoid space) for drug injection.
[0003] However, under this operation mode, the slender inner needle is very likely to be blocked by the target tissue (such as the subarachnoid space) at the needle tip or side hole, resulting in injection difficulties or failure. In order to overcome the blockage, medical staff usually need to try to push a small amount of liquid, using the "feeling of emptiness" or "disappearance of resistance method" to assist in judging the breakthrough, while twisting the inner needle by hand to change the position or angle of the needle tip, trying to bypass the blocked tissue or find a tissue gap.
[0004] At the same time, medical staff must hold the outer positioning needle firmly to prevent it from shifting or falling out. This series of actions requires extremely high hand coordination and stability. The operating space is small, and it is very easy for the inner needle to be over-advanced or angled due to hand shaking or uneven force, damaging nerves or affecting the anesthesia effect. The subsequent withdrawal of the fine needle to introduce the guide wire will cause the outer needle to shift.
[0005] In addition, medical staff use the method of manually twisting the fine needle, which makes it difficult to accurately control the rotation amplitude and angle of the fine needle, especially when the fine needle needs to be adjusted to a very small angle. Summary of the Invention
[0006] The present application aims to solve at least one of the technical problems in the above-mentioned technology to a certain extent.
[0007] In order to achieve the above-mentioned purpose, the first aspect of the present application proposes an anesthesia interventional puncture device, comprising: a positioning outer needle, a connecting cavity, a flip structure, a pushing structure, a fine-tuning rotation structure and an inner needle injection structure, wherein the connecting cavity is arranged at the outer end of the positioning outer needle; the flip structure is rotatably arranged on the connecting cavity; two opposing blocking plates are arranged in the connecting cavity; the inner needle injection structure comprises a syringe, a connecting head, an inner needle and a first elastic roller, wherein the syringe and the inner needle are rotatably connected through the connecting head; the first elastic roller is sleeved on the inner needle, the first The elastic roller can move along the axial direction of the inner needle and be positioned at any axial position of the inner needle by friction, so that after the inner needle is inserted into the positioning outer needle and reaches the target position, the first elastic roller is pushed to abut against the blocking plates on both sides; the fine-tuning rotation structure is movably set on the blocking plate; the rotating end of the flipping structure and the moving end of the fine-tuning rotation structure are respectively connected to the pushing structure, so that when the pushing structure pushes the flipping structure to flip to fix the syringe, the rotating end of the fine-tuning rotation structure is synchronously driven to move to abut the first elastic roller.
[0008] In addition, the anesthesia interventional puncture device proposed in the present application may also have the following additional technical features:
[0009] As a further description of the above technical solution: a positioning ball is sleeved on the positioning outer needle, and the positioning ball can move along the axial direction of the positioning outer needle and be positioned at any axial position of the positioning outer needle through friction.
[0010] As a further description of the above technical solution: the flip structure includes a support plate and a rotating arm, wherein the rotating arm can be rotatably arranged on the connecting cavity; the support plate is pivotally connected to the rotating arm and is locked by a locking structure; wherein a slot is provided on the support plate, and an elastic pad is embedded in the slot; when the positioning outer needle is inserted into the patient's body, the support plate is supported on the patient's skin; when the pushing structure pushes the flip structure to rotate, the slot is stuck on the outer wall of the syringe and fixes the syringe by squeezing the elastic pad.
[0011] As a further description of the above technical solution: the locking structure is a second damping knob that can be rotated and locked.
[0012] As a further description of the above technical solution: the pushing structure includes a first gear, a second gear, a connecting rod and a first damping knob, wherein the first gear is rotatably arranged on the connecting cavity; the connecting rod is coaxially connected to the rotation axis of the first gear, and the connecting rod is provided with a sliding groove along the length direction; the second gear is coaxially connected to the pivot end of the flipping structure, and the first gear is meshed with the second gear; a vertical through groove is provided on the connecting cavity, and the first damping knob passes through the through groove and the sliding groove and is locked to position the rotation of the connecting rod.
[0013] As a further description of the above technical solution: the fine-tuning rotation structure includes a second elastic roller, a base and a push rod, wherein a movable groove is opened on the blocking plate; the base is slidably arranged in the movable groove, and is rotatably connected to the second elastic roller located above the blocking plate; one end of the push rod is pivotally connected to the bottom of the base, and the other end is eccentrically arranged on the first gear and pivotally connected to the first gear; wherein an arc groove is opened on the connecting cavity with the center of the first gear, and the pivot connection shaft between the push rod and the first gear is slidably arranged in the arc groove; a rotating handle for rotation is provided on the second elastic roller.
[0014] As a further description of the above technical solution: the second elastic roller is rotatably connected to the base with damping.
[0015] As a further description of the above technical solution: an auxiliary plate is provided on the top of the communicating cavity, a notch is opened on the auxiliary plate, and the rotating shaft of the second elastic roller is slidably arranged in the notch.
[0016] As a further description of the above technical solution: angle scale lines are provided on the auxiliary plate, so that when the turning handle is turned, the rotation angle can be read through the angle scale lines.
[0017] According to the anesthesia interventional puncture device of the present application, the pushing structure pushes the flipping structure to flip, so that the flipping structure clamps the syringe, and realizes the linkage fixation of the syringe and the positioning outer needle, avoiding the step of manually holding the outer needle in traditional operation, and reducing the risk of inner needle deviation caused by hand shaking; in addition, the pushing structure synchronously drives the fine-tuning rotating structure to move to abut against the first elastic roller, and the rotation angle of the fine needle can be fine-tuned by the fine-tuning rotating structure; and after the fine needle is injected and pulled out of the positioning outer needle, the flipping structure is flipped to support the patient's skin by pushing the pushing structure in the opposite direction, providing a more stable positioning outer needle for the subsequent introduction of the guide wire to avoid deviation of the positioning outer needle.
[0018] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:
[0020] Figure 1 1 is a schematic structural diagram of an anesthesia interventional puncture device according to an embodiment of the present application;
[0021] Figure 2 This is a schematic diagram of the connection between the flip structure and the pushing structure according to one embodiment of the present application;
[0022] Figure 3 is a schematic diagram of an inner needle injection structure according to one embodiment of the present application;
[0023] Figure 4 This is a schematic diagram of the anesthesia interventional puncture device in use according to one embodiment of the present application;
[0024] Figure 5 is a schematic diagram of an enlarged structure of a local area A according to an embodiment of the present application;
[0025] Figure 6 is a schematic diagram of an anesthesia interventional puncture device in use according to another embodiment of the present application;
[0026] Figure 7 is a schematic diagram of the enlarged structure of part B according to an embodiment of the present application;
[0027] As shown in the figure:
[0028] 100, positioning outer needle; 101, positioning ball; 200, connecting cavity; 201, blocking plate; 2011, movable groove; 202, auxiliary plate; 2021, notch; 203, through groove; 204, arc groove; 300, flip structure; 310, support plate; 311, elastic pad; 320, rotating arm; 400, pushing structure; 410, first gear; 420, second gear; 430, connecting rod; 440, damping knob; 500, fine-tuning rotation structure; 501, rotating handle; 510, second elastic roller; 520, base; 530, push rod; 600, inner needle injection structure; 610, syringe; 620, connector; 630, inner needle; 640, first elastic roller. DETAILED DESCRIPTION
[0029] The following describes in detail embodiments of the present application, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.
[0030] The following describes the anesthesia interventional puncture device according to an embodiment of the present application with reference to the accompanying drawings.
[0031] like Figure 1 As shown, the anesthesia interventional puncture device of the embodiment of the present application may include a positioning outer needle 100, a connecting cavity 200, a flip structure 300, a pushing structure 400, a fine-tuning rotation structure 500 and an inner needle injection structure 600.
[0032] The communicating cavity 200 is provided at the outer end of the positioning outer needle 100 .
[0033] As a possible scenario, the outer end of the positioning pin 100 is detachably connected to the communication cavity 200, for example, by a threaded connection.
[0034] It should be noted that a positioning ball 101 is sleeved on the positioning outer needle 100 , and the positioning ball 101 can move along the axial direction of the positioning outer needle 100 and be positioned at any axial position of the positioning outer needle 100 through friction.
[0035] The flip structure 300 is rotatably disposed on the communication cavity 200 , and two opposing blocking plates 201 are disposed in the communication cavity 200 .
[0036] like Figure 3 As shown, the inner needle injection structure 600 includes a syringe 610 , a connector 620 , an inner needle 630 and a first elastic roller 640 .
[0037] Among them, the syringe 610 and the inner needle 630 are rotatably connected through the connecting head 620, and the first elastic roller 640 is sleeved on the inner needle 630. The first elastic roller 640 can move along the axial direction of the inner needle 630 and be positioned at any axial position of the inner needle 630 through friction, so that after the inner needle 630 is inserted into the positioning outer needle 100 and reaches the target position, the first elastic roller 640 is pushed to abut against the blocking plates 201 on both sides.
[0038] The fine-tuning rotation structure 500 is movably arranged on the blocking plate 201, and the rotating end of the flipping structure 300 and the moving end of the fine-tuning rotation structure 500 are respectively connected to the pushing structure 400, so that when the pushing structure 400 pushes the flipping structure 300 to flip to the fixed syringe 610, the rotating end of the fine-tuning rotation structure 500 is synchronously driven to move to abut the first elastic roller 640.
[0039] Specifically, when medical staff perform anesthesia puncture on a patient, they first perform local anesthesia on the target area of the patient (for example, in the case of lumbar anesthesia, the patient's lower back is selected as the target area) to create a skin bump, and then connect the positioning outer needle 100 to the connecting cavity 200, insert the positioning outer needle 100 into the skin bump, and push it into the patient's body to the desired position, and then push the positioning ball 101 along the positioning outer needle 100 until it abuts against the patient's skin.
[0040] Next, the relevant medical staff inserts the inner needle 630 into the target tissue through the lumen of the positioning outer needle 100. When the inner needle 630 reaches the target position (such as the subarachnoid space), the first elastic roller 640 is moved axially along the inner needle 630 so that its two ends abut against the two blocking plates 201 in the connecting cavity 200. Then, the syringe 610 is connected to the inner needle 630 through the connector 620 to achieve depth limiting and fixation of the inner needle 630.
[0041] Before the medical staff pushes the syringe 610 to inject, they push the pushing structure 400 to flip the flip structure 300 around its rotating end. The flip structure 300 clamps the outer wall of the syringe 610 to achieve clamping and fixation. At this time, the syringe 610 and the positioning outer needle 100 form a linkage structure, and no manual support is required to avoid the displacement of the inner needle 630 caused by hand shaking.
[0042] Under the linkage action of the pushing structure 400, the fine-tuning rotating structure 500 moves synchronously to abut the first elastic roller 640, and then pushes the syringe 610 to perform anesthesia injection. Since the syringe 610 has been clamped by the flipping structure 300, no additional support is required during the operation, and the injection process is more stable.
[0043] When there is obvious resistance to pushing, it means that the fine needle is blocked. The relevant medical staff will use the "feeling of emptiness" or "resistance disappearance method" to assist in judging a breakthrough. If the blockage cannot be broken, the relevant medical staff can drive the first elastic roller 640 to rotate by rotating the fine-tuning rotating structure 500, and then drive the inner needle 630 to rotate slightly, so as to fine-tune the angle of the inner needle 630 to avoid tissue blockage or adjust the needle tip position to improve the smoothness of the injection.
[0044] After the injection is completed, the inner needle 630 is pulled out from the positioning outer needle 100. At this time, the flip structure 300 is pushed in the opposite direction by the pushing structure 400 to flip it to the supporting position and abut against the patient's skin surface. The flip structure 300 can serve as a supporting platform in this position to stably position the outer needle 100 and prevent it from being offset or falling out during the subsequent guide wire introduction process, thereby improving the safety and success rate of subsequent operations.
[0045] In one embodiment of the present application, Figure 2As shown, the flip structure 300 includes a support plate 310 and a rotating arm 320 .
[0046] Among them, the rotating arm 320 can be rotatably set on the connecting cavity 200, and the support plate 310 is pivotally connected to the rotating arm 320 and locked by a locking structure, wherein a U-shaped slot is opened on the support plate 310, and an elastic pad 311 is embedded in the U-shaped slot; when the positioning outer needle 100 is inserted into the patient's body, the support plate 310 is supported on the patient's skin; when the pushing structure 400 pushes the flip structure 300 to rotate, the U-shaped slot is stuck on the outer wall of the syringe 610, and the syringe 610 is fixed by squeezing the elastic pad 311.
[0047] As a possible scenario, the locking structure is a second damping knob that can be rotatably locked. When the positioning outer needle 100 is inserted into the patient's target position and before the inner needle 630 is inserted, the relevant medical staff can push the flip structure 300 through the pushing structure 400 so that the support plate 310 abuts against the patient's skin, and then lock the connection between the support plate 310 and the rotating arm 320 through the locking structure.
[0048] To clearly illustrate the above embodiment, in one embodiment of the present application, Figure 2 As shown, the pushing structure 400 includes a first gear 410 , a second gear 420 , a connecting rod 430 and a first damping knob 440 .
[0049] Among them, the first gear 410 can be rotatably set on the connecting cavity 200, the connecting rod 430 is coaxially connected to the rotation axis of the first gear 410, and the connecting rod 430 is provided with a sliding groove along the length direction, the second gear 420 is coaxially connected to the pivot end of the flip structure 300, and the first gear 410 is meshed with the second gear 420. A vertical through groove 203 is provided on the connecting cavity 200, and the first damping knob 440 passes through the through groove 203 and the sliding groove and is locked to position the rotation of the connecting rod 430.
[0050] To clearly illustrate the above embodiment, in one embodiment of the present application, Figure 4 and Figure 5 As shown, the fine-tuning rotation structure 500 includes a second elastic roller 510 , a base 520 and a push rod 530 .
[0051] Among them, a movable groove 2011 is opened on the blocking plate 201, the base 520 is slidably set in the movable groove 2011, and is rotatably connected to the second elastic roller 510 located above the blocking plate 201, one end of the push rod 530 is pivotally connected to the bottom of the base 520, and the other end is eccentrically set on the first gear 410 and pivotally connected to the first gear 410.
[0052] The connecting cavity 200 has an arcuate slot 204 at the center of the first gear 410 . The pivot axis between the push rod 530 and the first gear 410 is slidably disposed in the arcuate slot 204 . The second elastic roller 510 is provided with a rotatable handle 501 .
[0053] It should be noted that the diameter ratio of the first elastic roller 640 to the second elastic roller 510 can be preset according to the required adjustment accuracy ratio.
[0054] Specifically, the medical staff pushes the positioning outer needle 100 into the patient's body to a preset depth, and then pushes the positioning ball 101 to abut against the outside of the patient's body.
[0055] Then, the rotating arm 320 of the flipping structure 300 is rotated by pushing the structure 400, so that the support plate 310 is flipped toward the patient's skin until the support plate 310 is in contact with the skin surface. Then the medical staff locks the pivot point of the support plate 310 and the rotating arm 320 with the locking structure, and provides additional stabilizing force for positioning the outer needle 100 through the rigid support of the support plate 310, thereby achieving the initial positioning of the support plate 310.
[0056] After the inner needle 630 is inserted into the target position (such as the subarachnoid space) along the lumen of the positioning outer needle 100, the first elastic roller 640 is pushed along the axial direction of the inner needle 630 so that its two ends abut against the blocking plate 201 in the communicating cavity 200, and the depth of the inner needle 630 is fixed by friction; the syringe 610 is connected to the inner needle 630 through the connector 620, that is, Figure 4 shown.
[0057] The medical staff pushes the connecting rod 430 of the pushing structure 400, driving the first gear 410 to rotate. Since the first gear 410 is engaged with the second gear 420, the second gear 420 drives the rotating arm 320 to flip toward the syringe 610, so that the U-shaped groove on the support plate 310 is stuck on the outer wall of the syringe 610, and the elastic pad 311 in the U-shaped groove is squeezed and deformed, thereby fixing the syringe 610.
[0058] At the same time, when the first gear 410 rotates, the eccentrically connected push rod 530 slides along the arc groove 204 of the connecting cavity 200, pushing the base 520 of the fine-tuning rotating structure 500 to slide along the movable groove 2011 of the blocking plate 201 until the second elastic roller 510 on the base 520 abuts against the first elastic roller 640 of the inner needle.
[0059] After the adjustment is completed, the first damping knob 440 is rotated to pass through the through slot 203 of the connecting cavity 200 and the sliding slot of the connecting rod 430 and locked, fixing the position of the connecting rod 430 to ensure that the flip structure 300 and the fine-tuning structure maintain the current state. The medical staff pushes the piston of the syringe 610 to inject the anesthetic drug. Because the syringe 610 is fixed by the U-shaped slot of the flip structure 300, the positioning ball 101 is provided on the positioning outer needle 100, and the inner needle 630 abuts against the blocking plate 201 through the first elastic roller 640. There is no obvious shaking as a whole, and the injection process is stable. Figure 6 and Figure 7 shown.
[0060] If there is obvious resistance to the injection (i.e., the inner needle 630 is blocked), the medical staff holds the rotating handle 501 on the second elastic roller 510 and rotates it clockwise or counterclockwise. The second elastic roller 510 drives the first elastic roller 640 to rotate synchronously through friction, so that the inner needle 630 rotates slightly with it, and the angle of the inner needle 630 is precisely adjusted to avoid blocked tissue or find tissue gaps. If the resistance disappears after fine-tuning, continue to push the syringe 610 to complete the injection; if further adjustment is needed, just repeat turning the rotating handle 501.
[0061] After the injection is completed, the medical staff rotates the first damping knob 440 in reverse to unlock it, rotates the connecting rod 430 in reverse, and the first gear 410 rotates in reverse, driving the second gear 420 and the rotating arm 320 to reset, and the U-shaped slot disengages from the syringe 610. The support plate 310 is reset to the initial position (that is, the position where the support plate 310 contacts the patient's skin). At this time, the support plate 310 acts as a supporting platform to stably position the outer needle 100, preventing the outer needle from deviating or falling out during the subsequent guide wire introduction, thereby ensuring the safety of subsequent operations.
[0062] At the same time, the push rod 530 slides in the opposite direction along with the first gear 410, driving the base 520 to retreat along the moving groove 2011, the second elastic roller 510 is separated from the first elastic roller 640, and the second damping knob is rotated to lock it, and then the inner needle 630 is smoothly pulled out.
[0063] In one embodiment of the application, in order to prevent the fine needle from rotating randomly, the second elastic roller 510 is rotatably connected to the base 520 with damping. Through the effect of damping, it can be ensured that the fine needle will not rotate randomly. When the angle of the fine needle needs to be adjusted, it can be operated by rotating the rotating handle 501.
[0064] In one embodiment of the present application, an auxiliary plate 202 is provided on the top of the connecting cavity 200, and a slot 2021 is opened on the auxiliary plate 202. The rotating shaft of the second elastic roller 510 is slidably set in the slot 2021 to improve the stability of the second elastic roller 510 during movement and rotation.
[0065] In one embodiment of the present application, angle scale lines are provided on the auxiliary plate 202 so that when the handle 501 is rotated, the rotation angle can be read through the angle scale lines. Relevant staff can determine the required rotation angle by observing the rotation angle of the handle 501.
[0066] In summary, according to the anesthesia interventional puncture device of the embodiment of the present application, the pushing structure 400 pushes the flipping structure 300 to flip, so that the flipping structure 300 clamps the syringe 610, and realizes the linkage fixation of the syringe 610 and the positioning outer needle 100, avoiding the step of manually holding the outer needle in traditional operation, and reducing the risk of inner needle deviation caused by hand shaking; in addition, the pushing structure 400 synchronously drives the fine-tuning rotating structure 500 to move to abut against the first elastic roller 640, and the rotation angle of the inner needle 630 can be fine-tuned by the fine-tuning rotating structure 500; and after the inner needle 630 is pulled out of the positioning outer needle 100, the flipping structure 300 is flipped to support the patient's skin by pushing the pushing structure 400 in the opposite direction, providing a more stable positioning outer needle 100 for the subsequent introduction of the guide wire to avoid deviation of the positioning outer needle 100.
[0067] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.
[0068] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.
[0069] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.
Claims
1. An anesthesia interventional puncture device, characterized in that: include: The outer needle (100), the connecting cavity (200), the flip structure (300), the pushing structure (400), the fine-tuning rotation structure (500) and the inner needle injection structure (600) are positioned, wherein: The communicating cavity (200) is provided at the outer end of the positioning outer needle (100); The flip structure (300) is rotatably arranged on the communicating cavity (200); Two opposing blocking plates (201) are provided in the communication cavity (200); The inner needle injection structure (600) comprises a syringe (610), a connector (620), an inner needle (630) and a first elastic roller (640), wherein: The syringe (610) and the inner needle (630) are rotatably connected via a connector (620); The first elastic roller (640) is sleeved on the inner needle (630), and the first elastic roller (640) can move along the axial direction of the inner needle (630) and be positioned at any axial position of the inner needle (630) by friction, so that after the inner needle (630) is inserted into the positioning outer needle (100) and reaches the target position, the first elastic roller (640) is pushed to abut against the blocking plates (201) on both sides; The fine-tuning rotation structure (500) is movably arranged on the blocking plate (201); The rotating end of the flipping structure (300) and the moving end of the fine-tuning rotating structure (500) are respectively connected to the pushing structure (400), so that when the pushing structure (400) pushes the flipping structure (300) to flip to fix the syringe (610), the rotating end of the fine-tuning rotating structure (500) is synchronously driven to move to abut the first elastic roller (640).
2. The anesthesia interventional puncture device according to claim 1, characterized in that: A positioning ball (101) is sleeved on the positioning outer needle (100), and the positioning ball (101) can move along the axial direction of the positioning outer needle (100) and be positioned at any axial position of the positioning outer needle (100) through friction.
3. The anesthesia interventional puncture device according to claim 1, characterized in that: The flip structure (300) comprises a support plate (310) and a rotating arm (320), wherein: The rotating arm (320) is rotatably disposed on the communicating cavity (200); The support plate (310) is pivotally connected to the rotating arm (320) and is locked via a locking structure; The support plate (310) is provided with a slot, and an elastic pad (311) is embedded in the slot; when the positioning outer needle (100) is inserted into the patient's body, the support plate (310) is supported on the patient's skin; when the pushing structure (400) pushes the flip structure (300) to rotate, the slot is stuck on the outer wall of the syringe (610) and fixes the syringe (610) by squeezing the elastic pad (311).
4. The anesthesia interventional puncture device according to claim 3, characterized in that: The locking structure is a second damping knob that can be rotated and locked.
5. The anesthesia interventional puncture device according to claim 1, characterized in that: The pushing structure (400) includes a first gear (410), a second gear (420), a connecting rod (430) and a first damping knob (440), wherein: The first gear (410) is rotatably disposed on the communication cavity (200); The connecting rod (430) is coaxially connected to the rotation axis of the first gear (410), and the connecting rod (430) is provided with a sliding groove along its length; The second gear (420) is coaxially connected to the pivot end of the flip structure (300), and the first gear (410) is meshed and connected with the second gear (420); A vertical through slot (203) is provided on the communication cavity (200), and the first damping knob (440) passes through the through slot (203) and the slide slot and is locked to position the rotation of the connecting rod (430).
6. The anesthesia interventional puncture device according to claim 5, characterized in that: The fine-tuning rotation structure (500) comprises a second elastic roller (510), a base (520) and a push rod (530), wherein: The blocking plate (201) is provided with a moving groove (2011); The base (520) is slidably disposed in the movable groove (2011) and is rotatably connected to the second elastic roller (510) located above the blocking plate (201); One end of the push rod (530) is pivotally connected to the bottom of the base (520), and the other end is eccentrically arranged on the first gear (410) and pivotally connected to the first gear (410); The connecting cavity (200) is provided with an arcuate groove (204) at the center of the first gear (410), and the pivotal connection shaft between the push rod (530) and the first gear (410) is slidably arranged in the arcuate groove (204); The second elastic roller (510) is provided with a rotatable rotating handle (501).
7. The anesthesia interventional puncture device according to claim 6, characterized in that: The second elastic roller (510) is rotatably connected to the base (520) with damping.
8. The anesthesia interventional puncture device according to claim 6, characterized in that: An auxiliary plate (202) is provided on the top of the communicating cavity (200), a notch (2021) is provided on the auxiliary plate (202), and a rotating shaft of the second elastic roller (510) is slidably arranged in the notch (2021).
9. The anesthesia interventional puncture device according to claim 8, characterized in that: Angle scale lines are provided on the auxiliary plate (202), so that when the rotating handle (511) is rotated, the rotation angle can be read through the angle scale lines.