Telescopic multi-point minimally invasive puncture injection device

Abstract

The present invention provides a retractable multi-point minimally invasive puncture injection device, comprising a puncture needle, a minimally invasive injection device housing, a minimally invasive injection device handle, a puncture needle direction adjustment module, a retractable needle protection module, and an injection dose adjustment module: the puncture needle includes an adjustable needle bend; the tail of the puncture needle body is connected to a fluid reservoir within the minimally invasive injection device housing; the injection dose adjustment module is used to control the ejection dose of the fluid reservoir; the minimally invasive injection device handle is in transmission connection with the retractable needle protection module, which is in transmission connection with the fluid reservoir. The present invention utilizes a puncture needle direction adjustment module to help ensure optimal puncture angles and puncture effects; utilizes a retractable needle module to help protect the puncture needle and reduce the occurrence of cross-infection caused by needle contamination; and utilizes an injection dose adjustment module to help accurately control the push dose for precise drug delivery.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to a telescopic multi-point minimally invasive puncture injection device. Background Art

[0002] With the continuous advancement of medical technology and material filling techniques, procedures such as cone laryngoplasty and injection laryngoplasty, which utilize a puncture needle to inject autologous tissue or biocompatible materials into multiple specific locations for disease treatment, have become widely used in the medical field. These surgeries are complex and require high intraoperative accuracy in needle positioning and precise control of the injection dose, which necessitates lengthy physician training cycles. Furthermore, controlling the puncture angle and injection dose is crucial to the success of the procedure.

[0003] The existing Chinese patent with publication number CN105726206B discloses a medical device for tympanic membrane puncture and intratympanic injection, which relates to the field of ENT medical equipment. The main purpose is to solve the technical problem in the prior art that the second injection of the needle after puncture and fluid extraction forms two holes, causing drug reflux and increasing the patient's puncture pain. The main technical solution adopted is: a medical device for tympanic membrane puncture and intratympanic injection, including a first puncture device, a second puncture device, a suction device and an injection device; the first puncture device includes a puncture needle and a first connector; the second puncture device includes an injection needle and a second connector; the suction device includes a negative pressure mechanism and a third connector; the injection device includes a syringe and a fourth connector; when the medical device of the present invention is in a first use state, the third connector of the suction device is connected to the second connector of the second puncture device; when the medical device of the present invention is in a second use state, the fourth connector of the injection device is connected to the second connector of the second puncture device.

[0004] The inventors believe that existing puncture injection devices typically rely on the physician's experience to pre-bend a long needle at a certain angle for use. During the surgical procedure, the patient is first anesthetized, either general or local, and then the puncture injection needle is inserted into the patient's body in a specific posture. Autologous tissue or biocompatible materials are then injected. After completing the injection at one point, the needle is removed and moved to the next site for puncture injection. This leads to the following problems with existing puncture injection treatments: lack of needle protection during needle insertion or multiple punctures can easily lead to contamination; the puncture angle cannot be adjusted after the needle is inserted into the patient, making it difficult to ensure the optimal puncture angle and puncture effect; spontaneous muscle tremors during the procedure or hand tremors of the physician can easily cause the puncture needle to change direction, leading to mispuncture; and difficulty controlling the dosage of the injected material. Factors such as the human body's inherent anatomical characteristics, individual differences, and physician experience seriously affect the effectiveness of puncture injections, making it difficult for young physicians to perform the procedure, making it difficult to ensure optimal results, and even leading to complications that require conversion to open surgery, limiting the further development of the procedure.

[0005] Given the above analysis, developing devices that assist physicians in accurately positioning and ensuring puncture efficacy during surgery has become an important solution. To this end, the development of a novel, retractable, multi-point minimally invasive treatment device has significant innovative significance and clinical application value for improving the success rate of injection molding surgery and reducing the risk of puncture for patients. Summary of the Invention

[0006] In view of the defects in the prior art, the purpose of the present invention is to provide a telescopic multi-point minimally invasive puncture injection device.

[0007] According to the present invention, a telescopic multi-point minimally invasive puncture injection device comprises: a puncture injection needle, a minimally invasive injection device body shell, a minimally invasive injection device handle, a puncture needle direction adjustment module, a telescopic needle protection module, and an injection dose adjustment module: the puncture injection needle comprises a puncture injection needle tip, an adjustable needle bend, and a puncture injection needle body, which are arranged in sequence from the head; the puncture needle direction adjustment module is used to control the deflection angle and direction of the puncture injection needle tip; the tail of the puncture injection needle body is connected to a liquid storage capsule within the minimally invasive injection device body shell; the injection dose adjustment module is arranged inside the minimally invasive injection device body shell and is used to control the ejection dose of the liquid storage capsule; the minimally invasive injection device handle is arranged at the bottom of the minimally invasive injection device body shell; the minimally invasive injection device handle is transmission-connected to the telescopic needle protection module, and the telescopic needle protection module is transmission-connected to the liquid storage capsule.

[0008] Preferably, the needle adjustable bending section includes three layers of elastic gaskets and two layers of rigid gaskets that are spaced apart; the elastic gasket includes an elastic gasket made of a rubber matrix, and the rigid gasket includes a rigid gasket made of an alloy steel material.

[0009] Preferably, the puncture needle direction adjustment module includes a rib wire and a needle direction crank; the four rib wires are evenly arranged in the guide groove on the circumferential side of the puncture injection needle; the needle direction crank is arranged at the tail of the main body shell of the minimally invasive injection device and is connected to the rib wire; the needle direction crank is connected to the puncture injection needle through the rib wire.

[0010] Preferably, the needle crank includes: a needle crank base, a needle crank ball head and a needle crank lever; the needle crank base is arranged at the tail end of the main body shell of the minimally invasive injection device; the needle crank ball head is arranged in the needle crank base, and the two are rotatably matched; the needle crank lever extends from the needle crank ball head to the outside of the needle crank base.

[0011] Preferably, the telescopic needle protection module includes a needle protection sleeve, which includes a spring sleeve and a plastic sleeve. The plastic sleeve is sleeved on the outside of the puncture injection needle, and the plastic sleeve is nested inside the spring sleeve.

[0012] Preferably, the telescopic needle protection module further comprises an inner slide seat, which is embedded in the housing of the minimally invasive injection device body, and the tail of the inner slide seat is connected to the housing of the minimally invasive injection device body via a tension spring.

[0013] Preferably, an inner slide comb tooth structure is axially provided on the lower surface of the inner slide, and a trigger is provided on the handle of the minimally invasive injection device; the inner slide comb tooth structure is engaged with the gear of the trigger, and the inner slide can move axially along the outer shell of the minimally invasive injection device body.

[0014] Preferably, the telescopic needle protection module also includes a toothed spring and a pull-reset rope, the toothed spring is arranged in the handle of the minimally invasive injection device, one end of the pull-reset rope is connected to the toothed spring, and the other end of the pull-reset rope extends to the outside of the handle of the minimally invasive injection device; the toothed spring is arranged at the bottom of the comb tooth structure of the inner slide, and the teeth of the two are engaged with each other.

[0015] Preferably, the injection dose adjustment module comprises a piston with a push rod, a coupling and a linear motor connected in sequence, and the end of the piston with a push rod is arranged inside the liquid storage bag.

[0016] Preferably, the injection dose adjustment module also includes an electrically connected push button and a battery and a control circuit, the push button is arranged at the tail end of the needle-directed crank handle, and the battery and control circuit are arranged in the handle of the minimally invasive injection device; the battery and control circuit are electrically connected to the linear motor.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention adopts a puncture needle direction adjustment module, which helps to reduce the difficulty of adjusting the puncture angle after the puncture injection needle is inserted into the patient's body during cone plasty, injection laryngoplasty and other plasty procedures, thereby ensuring the optimal puncture angle and puncture effect; adopts a telescopic needle module, which helps to protect the puncture injection needle during the implementation of cone plasty, injection laryngoplasty and other plasty procedures, helps to reduce the occurrence of problems such as accidental injury to surrounding soft tissues and cross infection caused by needle contamination during multi-point puncture; adopts an injection dose adjustment module, which helps to reduce the difficulty of surgical operations when the puncture injection needle is long or a large injection force is required when the needle is bent, and helps to accurately grasp the injection dose to achieve precise drug delivery.

[0019] 2. The present invention uses a trigger in conjunction with the inner slide, and a toothed spring in conjunction with the inner slide, so that the puncture needle can sequentially extend and retract within the protective sleeve, thereby protecting the puncture needle during multi-point puncture and preventing the needle from being contaminated during multi-point puncture.

[0020] 3. The present invention helps to achieve accurate control of the push injection dose by controlling the time of pressing the push injection button and the surface scale of the liquid reservoir, which helps to reduce the difficulty of surgical operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Other features, objects and advantages of the present invention will become more apparent upon reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0022] Figure 1 This is a cross-sectional view of the telescopic multi-point minimally invasive puncture injection device that is mainly embodied in the present invention;

[0023] Figure 2 The present invention mainly embodies Figure 1 Schematic diagram of the middle section AA;

[0024] Figure 3 The present invention mainly embodies Figure 1 Enlarged view of the middle part B;

[0025] Figure 4 This is a stereoscopic diagram of the telescopic multi-point minimally invasive puncture injection device that mainly embodies the present invention.

[0026] As shown in the figure:

[0027] Puncture needle tip 1 Elastic gasket 2

[0028] Puncture needle 3 Spring sleeve 4

[0029] Plastic sleeve 5 Minimally invasive injection device body shell 6

[0030] Liquid reservoir 7 with push rod piston 8

[0031] Coupling 9 Linear motor 10

[0032] Rib line 11 needle to crank base 12

[0033] Needle crank handle ball head 13 Needle crank handle rocker 14

[0034] Press button 15 to pull spring 16

[0035] Minimally invasive injection device handle 17 battery and control circuit 18

[0036] Trigger 19 Inner slide comb structure 20

[0037] Toothed spring 21 Inner slide reset rope 22

[0038] Inner slide 23 Rigid gasket 24

[0039] Guide groove 25 DETAILED DESCRIPTION

[0040] The present invention will be described in detail below with reference to specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those skilled in the art, several changes and improvements can be made without departing from the scope of the present invention. These all fall within the scope of protection of the present invention.

[0041] like Figure 1 As shown, a telescopic multi-point minimally invasive puncture injection device provided according to the present invention includes: a puncture injection needle, a minimally invasive injection device body shell 6, a minimally invasive injection device handle 17, a puncture needle direction adjustment module, a telescopic needle protection module, and an injection dose adjustment module: the puncture injection needle includes a puncture injection needle tip 1, an adjustable needle bend section, and a puncture injection needle body 3 arranged in sequence from the head; the puncture needle direction adjustment module is used to control the deflection angle and direction of the puncture injection needle tip 1; the tail of the puncture injection needle body 3 is connected to the liquid storage capsule 7 in the minimally invasive injection device body shell 6; the injection dose adjustment module is arranged inside the minimally invasive injection device body shell 6, and is used to control the ejection dose of the liquid storage capsule 7; the minimally invasive injection device handle 17 is arranged at the bottom of the minimally invasive injection device body shell 6; the minimally invasive injection device handle 17 is transmission connected to the telescopic needle protection module, and the telescopic needle protection module is transmission connected to the liquid storage capsule 7.

[0042] This application is a retractable, multi-point puncture minimally invasive treatment device for applications such as cone-forming bone cement injection and injection laryngoplasty. It features a puncture needle direction adjustment module to assist with precise puncture, a retractable needle protection module to prevent cross-infection from multiple punctures, and an injection dosage adjustment module to facilitate control of the injection dosage of the filling material. This application can assist physicians in performing minimally invasive puncture and injection procedures, ensuring safe needle delivery, accurate puncture positioning, and needle direction adjustment during surgery, and preventing puncture failures caused by inadvertent punctures due to intraoperative muscle tremors, thereby improving the success rate and therapeutic efficacy of minimally invasive puncture and injection procedures.

[0043] The adjustable needle bend section comprises three layers of elastic gaskets 2 and two layers of rigid gaskets 24, spaced apart from each other. The elastic gaskets 2 are made of a rubber matrix, while the rigid gaskets 24 are made of an alloy steel material. The puncture and injection needle tip 1, the adjustable bend section (composed of the three layers of elastic gaskets 2 and the two layers of rigid alloy steel gaskets 24) and the puncture and injection needle body 3 are sequentially connected to form the puncture and injection needle. During surgery, the adjustable bend section of the puncture and injection needle directly contacts the puncture and injection site. This section can bend, thereby changing the deflection angle and direction of the needle tip.

[0044] like Figure 2 As shown, the puncture needle direction adjustment module includes ribs 11 and a needle-direction crank. Four ribs 11 are evenly arranged in guide grooves 25 around the puncture needle, which adjust and secure the puncture needle tip 1. The needle-direction crank is located at the rear end of the minimally invasive injection device housing 6 and is connected to the ribs 11. The needle-direction crank is in driving connection with the puncture needle through the ribs 11.

[0045] The needle crank is used by the physician to control the deflection angle and direction of the puncture needle tip 1. The needle crank comprises a needle adjustment operating end comprised of a needle crank base 12, a needle crank ball 13, and a needle crank lever 14. The needle crank base 12 is located at the rear of the minimally invasive injection device's main housing 6 and houses the needle control assembly. The needle crank ball 13 is positioned within the needle crank base 12, and the two rotate in unison. The needle crank lever 14 extends from the needle crank ball 13 to the outside of the needle crank base 12 and is used to adjust the angle of the puncture needle during surgery.

[0046] After the puncture injection needle is extended, when the puncture angle needs to be adjusted during the operation, the needle handle rocker 14 is rotated up and down and left and right to pull the tendon 11 along the guide groove 25 to act on the puncture injection needle tip 1. Under the action of the pulling force, the adjustable bending section deflects to obtain the optimal puncture injection position and angle, thereby completing the puncture angle adjustment and puncture action of the puncture injection needle tip 1.

[0047] like Figure 3As shown, the telescopic needle protection module includes a needle protection sleeve, which plays the role of protecting the puncture injection needle. The needle protection sleeve includes a spring sleeve 4 and a plastic sleeve 5. The plastic sleeve 5 is sleeved on the outside of the puncture injection needle, and the plastic sleeve 5 is nested inside the spring sleeve 4. Before performing the puncture injection task, the puncture injection needle is retracted into the plastic sleeve 5, and the plastic sleeve 5 is nested in the spring sleeve 4. The plastic sleeve 5 separates the puncture injection needle and the spring sleeve 5 so that the puncture injection needle can smoothly telescope along the axial direction. The spring sleeve 5 ensures that the needle feeding process has a certain degree of rigidity in the axial direction while having a certain degree of flexibility and can bend to facilitate changing the needle feeding direction. One end of the needle tip of the spring sleeve 4 and the plastic sleeve 5 is free, and the other end is connected to the housing 6 of the minimally invasive injection device body, which is used to protect the puncture injection needle.

[0048] The retractable needle protection module also includes an inner slide 23, which is embedded within the minimally invasive injection device's main housing 6. The rear end of the inner slide 23 is connected to the minimally invasive injection device's main housing 6 via a tension spring 16. An inner slide comb structure 20 is axially arranged on the lower surface of the inner slide 23. A trigger 19 is provided on the minimally invasive injection device's handle 17. The inner slide comb structure 20 and the gears of the trigger 19 mesh with each other, allowing the inner slide 23 to move freely axially along the minimally invasive injection device's main housing 6. When the trigger 19 is pulled, the teeth of the trigger 19 act on the inner slide comb structure 20, driving the inner slide 23 forward, thereby driving the fluid reservoir 7 forward, allowing the puncture needle tip 1 to extend out of the protective sleeve, completing the puncture needle extension action.

[0049] The retractable needle protection module also includes a toothed spring 21 and a pull-reset cord 22. The toothed spring 21 is positioned within the minimally invasive injection device handle 17. One end of the pull-reset cord 22 is connected to the toothed spring 21, while the other end of the pull-reset cord 22 extends outside the minimally invasive injection device handle 17. The toothed spring 21 is positioned at the bottom of the inner slide comb structure 20, and the teeth of the two mesh with each other. The inner slide comb structure 20 and the toothed spring 21 are connected through the teeth structure to support the inner slide 23 in the extension and retraction process of the puncture needle. When the reset cord 22 is pulled, the inner slide comb structure 20 separates from the toothed spring 21, and the inner slide 23 rebounds, retracting the puncture needle into the protective sleeve, completing the puncture needle retraction action.

[0050] like Figure 4As shown, the minimally invasive injection device handle 17 is used by the physician to stabilize the minimally invasive injection device during surgery, improving operational stability and reliability. The trigger 19 and inner carriage reset cord 22 are used to adjust the extension and retraction of the puncture needle to prevent needle contamination during multiple punctures. Once the tip of the needle protection sleeve reaches the treatment site, the trigger 19 is pulled. The force is transmitted through the trigger 19 gear to the inner carriage comb structure 20, pushing the inner carriage 23 forward, extending the puncture needle out of the spring sleeve 4 and plastic sleeve 5. When the inner carriage reset cord 22 is pulled, the toothed spring 21 disengages from the inner carriage comb structure 20, and the inner carriage 23, under the action of the tension spring 16, resets the puncture needle back into the spring sleeve 4, completing the retraction process. Under the physician's control, the puncture needle sequentially extends and retracts, effectively protecting the puncture needle during multiple punctures.

[0051] The injection dose adjustment module includes a piston with a push rod 8, a coupling 9, and a linear motor 10, which are connected in sequence. The end of the piston with a push rod 8 is located within the fluid reservoir 7. The injection dose adjustment module also includes an electrically connected push button 15 and a battery and control circuit 18. The push button 15 is located at the end of the needle-directed rocker 14 and is used to control the injection dose of autologous tissue or biocompatible material. The battery and control circuit 18 are located within the handle 17 of the minimally invasive injection device and are electrically connected to the linear motor 10.

[0052] When performing an injection, the doctor presses the push button 15, the battery and control circuit 18 output electrical energy and control pulses, the linear motor 10 starts to work, and the motor shaft drives the piston 8 with a push rod through the coupling 9 to inject the autologous tissue or biocompatible material in the liquid reservoir 7 into the given puncture injection site through the puncture injection needle. By controlling the pressing time of the push button 15 and the scale on the surface of the liquid reservoir 7, the push dose can be accurately controlled to complete the injection task.

[0053] This application adopts a puncture needle direction adjustment module. When the puncture injection needle tip 1 extends out of the protective sleeve, the doctor can control the deflection and swing of the puncture injection needle tip 1 by pushing the needle direction crank left and right to ensure the optimal puncture angle and puncture effect, which helps to reduce the difficulty of adjusting the puncture angle after the puncture injection needle is inserted into the patient's body during conoplasty, injection laryngoplasty and other shaping procedures.

[0054] This application uses a retractable needle module. Under normal circumstances, the puncture needle is retracted within the protective sleeve. When the top of the protective sleeve reaches the treatment site, the trigger 19 is pulled to push the toothed spring 21 and the inner slide comb structure 20 to produce relative movement, sending the puncture needle tip 1 out and relatively fixing it. When the puncture injection task is completed, the reset rope 22 connected to the toothed spring 21 is pulled, and the inner slide 23 is reset under the action of the spring force, driving the puncture needle tip 1 to retract into the protective sleeve. This helps protect the puncture needle during procedures such as cone plasty and injection laryngoplasty, and helps reduce the occurrence of accidental injury to surrounding soft tissue and the problem of needle contamination and cross infection during multiple punctures.

[0055] This application adopts an injection dose adjustment module, and the doctor can start the linear motor 10 by pressing the button 15 to realize the push injection operation and precise control of the filling material, which helps to reduce the difficulty of surgical operations when the puncture injection needle is long or the needle tip is bent and requires a large push force, and helps to accurately control the push dose and achieve precise drug delivery.

[0056] During the multi-point puncture and injection process of cone-forming bone cement injection, injection laryngoplasty, etc., the present application has a simple structure and is easy to operate. It can prevent the risk of puncture failure caused by hand tremors due to operator fatigue during the operation, and to a certain extent can reduce the difficulty of performing the shaping operation, thereby improving the quality of the operation and the success rate of the operation.

[0057] How it works

[0058] When the top of the needle protection sleeve reaches the treatment site, the trigger 19 is pulled. The force is transmitted through the gear of the trigger 19 to the inner slide comb structure 20, pushing the inner slide 23 forward, and the puncture needle extends out of the spring sleeve 4 and plastic sleeve 5, completing the puncture needle extension. After the puncture needle is extended, if the puncture angle needs to be adjusted during the surgical procedure, the needle handle rocker 14 is rotated up and down, pulling the tendon 11 along the guide groove 25 to act on the puncture needle tip 1. Under the action of the pulling force, the adjustable bend section deflects, achieving the optimal puncture injection position and angle. The trigger 19 is then pulled to continue extending the puncture needle to the appropriate length, thereby completing the puncture angle adjustment and puncture action of the puncture needle tip 1. When performing an injection, the physician presses button 15, causing the battery and control circuit 18 to output power and control pulses, and linear motor 10 to begin operation. The motor shaft, through coupling 9, drives piston 8 with a push rod to inject the autologous tissue or biocompatible material in reservoir 7 through the puncture needle into the designated puncture site, completing the injection. When the inner slide reset cord 22 is pulled, the toothed spring 21 disengages from the inner slide comb structure 20, and the inner slide 23 resets under the action of the tension spring 16, retracting the puncture needle into the spring sleeve 4, completing the puncture needle retraction action. Under the physician's operation, the puncture needle sequentially extends and retracts, effectively protecting the puncture needle during multiple punctures.

[0059] In the description of this application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0060] The above describes specific embodiments of the present invention. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art may make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. The embodiments of this application and the features in the embodiments may be combined with each other in any manner unless there is a conflict.

Claims

1. A telescopic multi-point minimally invasive puncture injection device, characterized in that: include: Puncture injection needle, minimally invasive injection device body shell (6), minimally invasive injection device handle (17), puncture needle direction adjustment module, telescopic needle protection module, injection dosage adjustment module: The puncture injection needle comprises a puncture injection needle tip (1), an adjustable needle bend section, and a puncture injection needle body (3) arranged in sequence from the head, and the puncture needle direction adjustment module is used to control the deflection angle and direction of the puncture injection needle tip (1); The tail of the puncture injection needle (3) is in communication with the liquid storage bag (7) in the housing (6) of the minimally invasive injection device; The injection dose adjustment module is arranged inside the housing (6) of the minimally invasive injection device body and is used to control the ejection dose of the liquid storage capsule (7); The minimally invasive injection device handle (17) is arranged at the bottom of the minimally invasive injection device body shell (6); The minimally invasive injection device handle (17) is in transmission connection with the telescopic needle protection module, and the telescopic needle protection module is in transmission connection with the injection dose adjustment module; The needle head adjustable bending section comprises three layers of elastic gaskets (2) and two layers of rigid gaskets (24) arranged at intervals; The elastic gasket (2) comprises an elastic gasket of a rubber matrix, and the rigid gasket (24) comprises a rigid gasket of an alloy steel material; The puncture needle direction adjustment module includes a rib line (11) and a needle direction crank; The four ribs (11) are evenly arranged in the guide groove (25) on the circumference of the puncture injection needle; The needle-direction crank is arranged at the rear of the minimally invasive injection device body shell (6) and is connected to the rib line (11); The needle-direction crank is in driving connection with the puncture injection needle via the rib line (11); The telescopic needle protection module further comprises an inner slide seat (23), which is embedded in the interior of the minimally invasive injection device body shell (6), and the tail of the inner slide seat (23) is connected to the minimally invasive injection device body shell (6) via a pulling spring (16).

2. The telescopic multi-point minimally invasive puncture injection device according to claim 1, characterized in that: The needle crank comprises: a needle crank base (12), a needle crank ball head (13) and a needle crank rocker (14); The needle crank base (12) is arranged at the rear of the minimally invasive injection device body shell (6); The needle crank ball head (13) is arranged in the needle crank base (12), and the two are rotatably matched; The needle crank lever (14) extends from the needle crank ball head (13) to the outside of the needle crank base (12).

3. The telescopic multi-point minimally invasive puncture injection device according to claim 1, characterized in that: The telescopic needle protection module comprises a needle protection sleeve, which comprises a spring sleeve (4) and a plastic sleeve (5), wherein the plastic sleeve (5) is sleeved on the outside of the puncture injection needle, and the plastic sleeve (5) is nested inside the spring sleeve (4).

4. The telescopic multi-point minimally invasive puncture injection device according to claim 1, characterized in that: An inner slide comb structure (20) is provided on the lower surface of the inner slide (23) along the axial direction, and a trigger (19) is provided on the handle (17) of the minimally invasive injection device; The inner slide comb structure (20) is meshed with the gear of the trigger (19), and the inner slide (23) is capable of moving along the axial direction of the minimally invasive injection device body shell (6).

5. The telescopic multi-point minimally invasive puncture injection device according to claim 4, characterized in that: The telescopic needle protection module further comprises a toothed spring (21) and a pull-reset rope (22), wherein the toothed spring (21) is arranged in the handle (17) of the minimally invasive injection device, one end of the pull-reset rope (22) is connected to the toothed spring (21), and the other end of the pull-reset rope (22) extends to the outside of the handle (17) of the minimally invasive injection device; The toothed spring (21) is arranged at the bottom of the inner slide comb tooth structure (20), and the teeth of the two mesh with each other.

6. The telescopic multi-point minimally invasive puncture injection device according to claim 2, characterized in that: The injection dose adjustment module comprises a piston with a push rod (8), a coupling (9) and a linear motor (10) which are connected in sequence, and the end of the piston with a push rod (8) is arranged inside the liquid storage bag (7).

7. The telescopic multi-point minimally invasive puncture injection device according to claim 6, characterized in that: The injection dose adjustment module further comprises an electrically connected push button (15) and a battery and a control circuit (18), wherein the push button (15) is arranged at the tail end of the needle-direction rocker (14), and the battery and the control circuit (18) are arranged in the handle (17) of the minimally invasive injection device; The battery and control circuit (18) are electrically connected to the linear motor (10).

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