Nerve block puncture device

Abstract

The utility model provides a nerve block puncture device which comprises a needle body, scales, a needle head, an oblique-angle needle tip, an injection hole, an injection needle connector and a first hose. The scales are arranged on the surface of the needle body and used for displaying the length of a needle inserting path and the needle inserting depth at a specified needle inserting angle. A needle head is arranged at the first end of the needle body, and an oblique-angle needle tip is arranged at the end, away from the needle body, of the needle head and used for penetrating tissue. An injection hole is formed in the face, away from the oblique-angle needle tip, of the surface of the needle head and used for injecting liquid medicine. The second end of the needle body is provided with an injection needle connector, the injection needle connector is used for connecting the needle body and a first hose, and the first hose is used for conveying liquid medicine to the needle body. The length of the needle inserting path and the needle inserting depth under the specified needle inserting angle are displayed through the scales, and a puncture needle is prevented from entering too deep. The injection hole is formed in the side, away from the oblique-angle needle tip, of the needle head, and skin and skin tissue are prevented from entering the body due to the needle tip opening.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical auxiliary device design, and more particularly to a nerve block puncture device. BACKGROUND

[0002] Nerve block is a technique that temporarily blocks nerve conduction function by injecting local anesthetics or other drugs around the nerve, thereby achieving analgesic or anesthetic effect. It can be divided into various types, including local nerve block, regional nerve block and epidural block, etc. The main mechanism of nerve block is to block the conduction pathway of pain and its vicious cycle, thereby relieving pain.

[0003] At present, injection needles or nerve block puncture needles are mostly used for nerve block operation, but the puncture failure rate is high at present. Nerve puncture needs accurate positioning, but due to the complex anatomical position and individual anatomical variation, it is difficult for the puncture needle to accurately enter the target area. The puncture needle usually only relies on the "empty feeling" as an important sign of puncture success, which is unreliable and easy to mispenetrate or enter too deep, increasing the risk of complications. For obese patients, the elderly, and patients with spinal deformity, the puncture difficulty increases. The open puncture needle may bring the epidermis fragments into the epidural space or cerebrospinal fluid during skin puncture, which is called "tissue coring", and may cause a series of complications. Puncture injury may cause epidermal layer material to enter the dermal layer, and then epidermal cells migrate and proliferate to the lesion site, forming epidermoid cysts. CONTENT OF THE UTILITY MODEL

[0004] The present application is proposed to solve the above problems. According to one aspect of the present application, a nerve block puncture device is provided, comprising a needle body, a scale, a needle, an oblique angle needle tip, an injection hole, an injection needle connector and a first hose:

[0005] The surface of the needle body is provided with a scale, and the scale is used to display the needle insertion path length and the needle insertion depth under the specified needle insertion angle;

[0006] The first end of the needle body is provided with a needle, and the end of the needle away from the needle body is provided with an oblique angle needle tip, and the oblique angle needle tip is used to penetrate the tissue;

[0007] The surface of the needle away from the oblique angle needle tip is provided with an injection hole, and the injection hole is used to inject liquid medicine;

[0008] The second end of the needle body is provided with an injection needle connector, and the injection needle connector is used to connect the needle body and the first hose, and the first hose is used to deliver liquid medicine to the needle body.

[0009] In one embodiment of the present application, the oblique angle needle tip is in a closed form.

[0010] In one embodiment of the present application, the needle is a developing needle, which is developed under an imaging device.

[0011] In one embodiment of the present application, the bevel tip has a bevel, which has an angle ranging from 20° to 35°.

[0012] In one embodiment of the present application, the medical staff inserts the needle body at a specified angle, and the length of the insertion path has a specified quantitative relationship with the depth of the insertion. The scale is used to display the length of the insertion path and the depth of the insertion.

[0013] In one embodiment of the present application, the first hose is provided with a first connecting piece at one end away from the injection needle joint, and the first connecting piece is used to connect the first hose with an external injector.

[0014] In one embodiment of the present application, the first connecting piece is provided with a connecting interface at one end away from the first hose, and the connecting interface is used to connect injectors with different capacities.

[0015] In one embodiment of the present application, the first hose is provided with a second connecting piece at one end away from the injection needle joint, and the second connecting piece is used to connect a self-checking detector with a constant-speed injector. The self-checking detector is used for bolus injection of saline and back flushing operation, and the constant-speed injector is used for constant-speed injection of liquid medicine.

[0016] In one embodiment of the present application, the self-checking detector comprises a detector body, a back flushing liquid display tube, a detector switch, a pressure display, a back flushing exhaust hole and a second hose.

[0017] The detector body is used for bolus injection of saline and back flushing operation.

[0018] The detector body is internally provided with a back flushing liquid display tube, which is used to contain saline or back flushing liquid.

[0019] The surface of the detector body is provided with a detector switch, a pressure display and a back flushing exhaust hole. The detector switch is used to turn on or off the self-checking detector, the pressure display is used to display the pressure of the bolus injection of saline, and the back flushing exhaust hole is used for exhaust after back flushing operation.

[0020] The detector body is connected with the second connecting piece through the second hose, and the second hose is used to transport saline and back flushing liquid.

[0021] In one embodiment of the present application, the constant-speed injector comprises an injector body, a disposable injection tube, a constant-speed injection pump, an injector switch, a third connecting piece, an injection tube joint and a third hose.

[0022] The first end of the syringe body is connected with the disposable injection tube, and the second end of the syringe body is connected with the constant-speed injection pump, which is used for injecting the liquid medicine into the third hose at a constant speed.

[0023] The surface of the syringe body is provided with a syringe switch, which is used for starting or stopping the constant-speed syringe.

[0024] The syringe body is connected with the disposable injection tube through the third connecting piece, and the end of the disposable injection tube away from the third connecting piece is provided with an injection tube joint, which is used for connecting the disposable injection tube with the third hose, and the third hose is used for conveying the liquid medicine to the first hose.

[0025] The nerve block puncture device of the present application avoids the damage to the patient caused by the puncture needle entering too deep under the condition of invisible puncture by marking the scale on the surface of the needle body, displaying the needle insertion path length and the needle insertion depth under the specified needle insertion angle through the scale. The bevel needle tip is arranged at one end of the needle, the bevel needle tip is used for penetrating the tissue, and the injection hole is arranged on the side of the needle away from the bevel needle tip, the injection hole is used for injecting the liquid medicine, and the opening of the needle tip is avoided to increase the skin and dermal tissue into the body, form a dermoid tumor, and cause damage. BRIEF DESCRIPTION OF DRAWINGS

[0026] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description of embodiments of the present application, taken in conjunction with the accompanying drawings. The drawings provided in the present application are used to provide further understanding of the embodiments of the present application, and constitute a part of the specification, which are used to explain the present application together with the embodiments of the present application, and do not constitute a limitation of the present application. In the drawings, the same reference numerals generally represent the same components or steps.

[0027] Figure 1 A schematic structural diagram of a nerve block puncture device according to an embodiment of the present application is shown;

[0028] Figure 2 A schematic structural diagram of a needle of a nerve block puncture device according to an embodiment of the present application is shown;

[0029] Figure 3 A schematic structural diagram of a nerve block puncture device according to another embodiment of the present application is shown;

[0030] Figure 4 A schematic structural diagram of a nerve block puncture device according to another embodiment of the present application is shown.

[0031] Reference signs:

[0032] 1 needle body; 11 scale; 2 needle head; 21 bevelled needle tip; 22 injection hole; 3 injection needle joint; 4 first hose; 5 first connecting piece; 6 connecting interface; 7 second connecting piece; 8 self-tester; 9 constant speed injector;

[0033] 81 tester body; 82 suction liquid display tube; 83 tester switch; 84 pressure display; 85 suction exhaust hole; 86 second hose;

[0034] 91 injector body; 92 disposable injection tube; 93 constant speed injection pump; 94 injector switch; 95 third connecting piece; 96 injection tube joint; 97 third hose. DETAILED DESCRIPTION

[0035] In the following description, numerous specific details are set forth to provide a more thorough understanding of the present application. However, it will be apparent to one of skill in the art that the present application can be practiced without one or more of these details. In other instances, well-known features have not been described in order to avoid obscuring the present application.

[0036] It will be understood that the present application can be put into effect in different ways, and is not to be construed as being limited to the embodiments presented herein. Rather, these embodiments are provided so that the disclosure will be thorough and complete, and will fully convey the scope of the application to those skilled in the art. In the drawings, the sizes and relative sizes of layers and regions can be exaggerated for clarity. Like reference numerals designate like elements throughout.

[0037] Spatially relative terms, such as "beneath", "below", "lower", "under", "above", "upper" and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0038] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising", when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. As used herein the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0039] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and / or the

[0040] In order to make the purposes, technical solutions and advantages of the present application more obvious, the following will describe the example embodiments according to the present application in detail with reference to the drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application, and it should be understood that the present application is not limited to the example embodiments described herein. Based on the embodiments of the present application described in the present application, all other embodiments obtained by those skilled in the art without creative labor should fall within the protection scope of the present application.

[0041] Therefore, in view of the existence of the foregoing technical problems, the present application provides a nerve block puncture device, which refers to Figures 1-4 The nerve block puncture device for implementing the embodiments of the present application is described as follows. As shown in Figure 1 , Figure 2 The nerve block puncture device includes a needle body 1, a scale 11, a needle head 2, an oblique angle needle tip 21, an injection hole 22, an injection needle connector 3 and a first hose 4.

[0042] The surface of the needle body 1 is provided with a scale 11, and the scale 11 is used to display the needle insertion path length and the needle insertion depth under a specified needle insertion angle. When the needle head 2 and the needle body 1 enter the body, medical staff can obtain the needle insertion path length and the needle insertion depth under a specified needle insertion angle through the scale 11 on the surface of the needle body 1 outside the body. In the case that the needle head 2 cannot be visually observed, the needle body 1 is prevented from entering too deep to cause harm to the patient. The needle body 1 is partially made of a relatively hard material, which can accurately advance along the predetermined path during puncture, thereby avoiding bending of the puncture direction during puncture, out of control, puncture failure or increase of related complications. The traditional intraspinal puncture needle is relatively thick, and the sacral canal puncture site is close to the perianal region. The greater the damage, the greater the risk of infection. The needle body 1 is thinner than the traditional puncture needle, thereby reducing the risk of potential infection.

[0043] As shown in Figure 2 The first end of the needle body 1 is provided with the needle head 2, and the end of the needle head 2 away from the needle body 1 is provided with the beveled needle tip 21, and the beveled needle tip 21 is used to penetrate the tissue. This design makes it easier to penetrate the tissue and reduces damage to the surrounding tissue. The surface of the needle head 2 away from the beveled needle tip 21 is provided with the injection hole 22, and the injection hole 22 is used to inject the liquid medicine. During the operation of the medical staff, the bevel of the beveled needle tip 21 faces downward, and the injection hole 22 causes less damage to the skin and the skin tissue, thereby avoiding the increase of the skin and the skin tissue into the body to form a dermoid tumor and cause damage. The injection hole 22 is opened upward to reduce unpredictable intravascular injection, reduce the risk of poisoning caused by the injection of local anesthetics into the blood vessels, and even endanger the safety of life. The second end of the needle body 1 is provided with the injection needle connector 3, and the injection needle connector 3 is used to connect the needle body 1 and the first hose 4, and the first hose 4 is used to deliver the liquid medicine to the needle body 1. The material of the first hose 4 can be PU, silicone or PVC. The first hose 4 can be connected to an external syringe to input the liquid medicine in the syringe to the needle body 1 and the needle head 2. The length of the first hose 4 is 2ml, which is convenient for exhaust and calculation of the volume of the liquid medicine.

[0044] The neural block puncture device according to the embodiment of the present application is provided with the scale 11 on the surface of the needle body 1, and the scale 11 is used to display the needle insertion path length and the needle insertion depth under a specified needle insertion angle, thereby avoiding the needle body 1 from entering too deep to cause harm to the patient in the case that the needle head 2 cannot be visually observed. The beveled needle tip 21 is arranged at one end of the needle head 2, and the beveled needle tip 21 is used to penetrate the tissue. The injection hole 22 is arranged on the side of the needle head 2 away from the beveled needle tip 21, and the injection hole 22 is used to inject the liquid medicine, thereby avoiding the opening of the needle tip to increase the skin and the skin tissue into the body to form a dermoid tumor and cause damage.

[0045] In the embodiment of the present application, the beveled needle tip 21 is in a closed form. When the needle tip is open, the skin and the subcutaneous tissue will be injected into the body to form a dermoid tumor and cause damage. When the needle tip is closed, the adverse reactions caused by tissue implantation can be avoided.

[0046] In the embodiments of the present application, the needle 2 is a developing needle 2, which is developed under an imaging device. The display effect of the needle 2 in the imaging device (such as ultrasound, MRI, etc.) is enhanced by a specific technical means, so that it is easier to be recognized and positioned, so as to improve the positioning accuracy of the needle body 1, reduce the damage to the surrounding tissues, and improve the safety and success rate of the operation. The puncture path can be tracked, and if the ligament tissue increases the difficulty of development, the position can be further judged in combination with the scale 11.

[0047] As shown in Figure 2 In the embodiments of the present application, the bevel needle tip 21 has a bevel, and the angle range of the bevel is 20°-35°. In the blind puncture method, “empty feeling” is often one of the signs of successful puncture. Due to the blunt needle tip, the empty feeling is not obvious. Even under the guidance of ultrasound, the puncture into the body will cause forward thrust, causing blood vessel and nerve damage, and even causing adverse events such as local anesthetic poisoning after injection, which threatens the safety of the patient. The angle range of the bevel is 20°-35°, which can protect the blood vessels and tissues of the puncture site as much as possible, and can enhance the “empty feeling” of puncture.

[0048] In the embodiments of the present application, the medical staff inserts the needle body 1 at a specified angle, and the length of the needle insertion path has a specified quantitative relationship with the depth of needle insertion. The scale 11 is used to display the length of the needle insertion path and the depth of needle insertion. The angle of needle insertion of the medical staff is usually 45°. Under the 45° needle insertion angle, the length of the needle insertion path is times the depth of needle insertion, so the corresponding depth of needle insertion can be inferred by the length of the needle insertion path, and the scale 11 displays the length of the needle insertion path and the depth of needle insertion. Avoiding the needle body 1 entering too deep under the condition that the needle 2 cannot be visualized, causing damage, and even irreversible damage.

[0049] As shown in Figure 3 In the embodiments of the present application, the first hose 4 is provided with a first connecting piece 5 at the end away from the injection needle connector 3, and the first connecting piece 5 is used to connect the first hose 4 with an external injector.

[0050] As shown in Figure 3 In the embodiments of the present application, the first connecting piece 5 is provided with a connecting interface 6 at the end away from the first hose 4, and the connecting interface 6 is used to connect injectors with different capacities.

[0051] As shown in Figure 4 In the embodiments of the present application, the first hose 4 is provided with a second connecting piece 7 at the end away from the injection needle connector 3, and the second connecting piece 7 is used to connect a self-checking device 8 with a uniform speed injector 9. The self-checking device 8 is used for bolus injection of physiological saline and backflow operation; and the uniform speed injector 9 is used for uniform injection of liquid medicine.

[0052] To determine the proper functioning of the indwelling intravenous catheter and to remove residual medication from the catheter to prevent it from affecting subsequent infusion efficacy, normal saline is injected using the self-administered detector 8. After injection, aspiration is performed to confirm that the needle 2 has correctly entered the blood vessel, avoiding accidental insertion into subcutaneous or other areas. To prevent inaccurate drug dosage due to infusion rate fluctuations and to effectively prevent blood pressure fluctuations or other complications caused by excessively fast or slow infusion rates, medication is injected at a constant rate into the first tubing 4 using a constant-speed injector 9. The self-administered detector 8 and the constant-speed injector 9 can be connected to the second connector 7 respectively. After the self-administered detector 8 completes the injection of normal saline and aspiration, confirming that the conditions for medication infusion are met, the constant-speed injector 9 injects medication at a constant rate into the first tubing 4.

[0053] like Figure 4 As shown in the embodiments of this application, the self-service detector 8 includes a detector body 81, a backflow fluid display tube 82, a detector switch 83, a pressure display 84, a backflow vent 85, and a second hose 86. The detector body 81 is used to inject saline solution and perform a backflow operation. The backflow fluid display tube 82 is provided inside the detector body 81, and is used to hold saline solution or backflow fluid. The backflow fluid display tube 82 can be made of transparent material, allowing for timely observation of any abnormalities in the backflow fluid. The detector body 81 is provided with a detector switch 83, a pressure display 84, and a backflow vent 85. The detector switch 83 is used to turn the self-service detector 8 on or off, the pressure display 84 is used to display the pressure of the injected saline solution, and the backflow vent 85 is used to vent air after the backflow operation. The detector body 81 is connected to a second connector 7 via the second hose 86, which is used to deliver saline solution and backflow fluid.

[0054] The aspiration fluid display tube 82 contains normal saline. When the detector switch 83 is pressed, the detector body 81 injects the normal saline from the aspiration fluid display tube 82 through the second tubing 86, the first tubing 4, and into the needle body 1 and needle tip 2, thereby determining the functionality of the indwelling needle and ensuring catheter patency, thus avoiding blockages or leaks during infusion. The pressure display 84 shows the pressure during the injection process, preventing local bulging and helping to promptly detect blockages or leaks in the infusion line, thereby preventing insufficient or interrupted drug delivery and ensuring treatment effectiveness. If the pressure displayed on the pressure display 84 exceeds the specified range, the puncture is repeated. After the re-puncture, normal saline is injected again until the pressure displayed on the pressure display 84 returns to normal.

[0055] After injecting saline solution, the detector body 81 undergoes aspiration. The aspirated fluid passes through the needle 2, needle body 1, first tubing 4, and second tubing 86 into the aspirated fluid display tube 82. The presence of blood and cerebrospinal fluid during aspiration can be observed through the display tube 82. If present, it indicates an abnormal puncture site, requiring re-puncture. Aspiration helps determine catheter patency and the presence of blockages or damage. If no blood is aspirated or resistance is encountered, it may indicate catheter blockage or the needle not entering the reservoir, necessitating immediate needle adjustment or catheter replacement. Aspiration helps detect blood reflux, blood clots, or other abnormalities, preventing complications such as phlebitis and catheter-related infections. After re-puncture, saline solution is injected again, and aspiration is repeated until the aspirated fluid is normal. The vent 85 ensures complete removal of gas from the system or equipment, preventing problems caused by residual gas, medication spillage, and tissue infection.

[0056] like Figure 4 As shown in the embodiments of this application, the constant-speed injector 9 includes a syringe body 91, a disposable injection tube 92, a constant-speed injection pump 93, a syringe switch 94, a third connector 95, an injection tube connector 96, and a third flexible tube 97. The first end of the syringe body 91 is connected to the disposable injection tube 92, and the second end of the syringe body 91 is connected to the constant-speed injection pump 93. The constant-speed injection pump 93 is used to inject the drug solution into the third flexible tube 97 at a constant speed. A syringe switch 94 is provided on the surface of the syringe body 91, which is used to turn the constant-speed injector 94 on or off. The syringe body 91 is connected to the disposable injection tube 92 via the third connector 95. An injection tube connector 96 is provided at the end of the disposable injection tube 92 away from the third connector 95. The injection tube connector 96 is used to connect the disposable injection tube 92 and the third flexible tube 97, which is used to deliver the drug solution to the first flexible tube 4.

[0057] The constant speed injection pump 93 achieves uniform and continuous drug infusion by precisely controlling the injection speed of the syringe. According to the evidence, the injection pump can be controlled by a microcomputer, using a stepper motor and a reducer to drive the syringe to complete the injection operation in a uniform linear motion, thereby achieving uniform micro-injection. In practical application, the injection speed and pressure of the constant speed injection pump 93 need to be adjusted according to the characteristics of the drug and the needs of the patient. For example, in the infusion of chemotherapy drugs, a stable injection speed and pressure can reduce the damage to blood vessels. In an embodiment, the constant speed injection pump 93 can pulse inject drugs within a set time. At the same time, the constant speed injection pump 93 also has an alarm function, such as underpressure, overpressure or injection completion alarm, to improve safety. If there is an abnormal increase in pressure during injection, the injection can be stopped and an alarm can be given to prevent abnormal tissue injection. In an embodiment, the constant speed injection pump 93 can perform segmented injection. When multiple injection points are required for the target tissue site, the amount of drug can be set in advance, and the constant speed injection pump 93 is designed for segmented injection. When a segment of injection is completed, it stops, adjusts the site for the second segment of injection, and so on until multiple injection points are completed. When the syringe switch 94 is pressed, the constant speed injection pump 93 injects the liquid at a constant speed to the third hose 97, the first hose 4, the needle body 1 and the needle 2. In an embodiment, the constant speed injection pump 93 can inject a fixed amount of liquid multiple times. After the constant speed injection pump injects a fixed amount of liquid, the detector body 81 performs a back-draw to check if there is blood or the like, until the back-drawn liquid is normal.

[0058] Before the puncture device punctures, the patient takes a prone position or a lateral position, selects a 7-13 MHz high-frequency linear array probe, and disinfects and lays a towel on the puncture area according to the surgical disinfection range requirements. The ultrasonic probe coated with a coupling agent is wrapped with a sterile mirror cover; an ultrasonic longitudinal image is obtained in the puncture area. The depth of the puncture target position is measured, and the needle body 1 is determined to be inserted at an angle of 45°. The local anesthetic or therapeutic drug is prepared through the first hose 4, and the first hose 4 is exhausted until the liquid is discharged from the needle tip, about 2 ml. Under the guidance of ultrasound, the bevel of the bevel needle tip 21 faces downward, and the needle is held at an angle of 45°. The bevel of the bevel needle tip 21 has an enhanced imaging effect and can track the puncture path. If the ligament tissue increases the imaging difficulty, it can be further combined with the calibrated depth to judge the position. If the puncture is successful, the sacrococcygeal ligament can be seen to fluctuate and fall back under the condition of pulse manual administration by an assistant. If there is resistance during injection, the angle of the needle body 1 is reduced, and the injection of the local anesthetic or therapeutic drug is continued for 1-2 mm.

[0059] Therefore, the nerve block puncture device according to the embodiments of the present application avoids damage to the patient caused by the puncture needle entering too deep under the condition of being unable to visually puncture by marking scales on the surface of the needle body, displaying the needle insertion path length and the needle insertion depth under the specified needle insertion angle through the scales. The bevel needle tip is arranged at one end of the needle, and the bevel needle tip is used to penetrate the tissue. The injection hole is arranged on the side of the needle away from the bevel needle tip, and the injection hole is used to inject liquid medicine, so as to avoid the opening of the needle tip increasing the skin and the skin tissue into the body, forming a dermoid tumor, and causing damage. The needle is a developing needle, and the needle is developed under the imaging equipment, thereby improving the puncture success rate.

[0060] Although example embodiments have been described herein with reference to the accompanying drawings, it is to be understood that the example embodiments are only exemplary and are not intended to limit the scope of the present application thereto. Those of ordinary skill in the art can make various changes and modifications without departing from the scope and spirit of the present application. All such changes and modifications are intended to be included within the scope of the present application as claimed in the appended claims.

[0061] In several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only illustrative, for example, the division of the units is only a logical functional division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another device, or some features can be ignored or not executed.

[0062] In the specification provided herein, a large number of specific details are described. However, it can be understood that the embodiments of the present application can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not shown in detail in order not to obscure the understanding of the present specification.

[0063] Similarly, it should be understood that, in order to simplify the present application and help understand one or more of the various application aspects, in the description of the exemplary embodiments of the present application, various features of the present application are sometimes grouped together in a single embodiment, figure, or description thereof. However, this method of the present application should not be interpreted as reflecting the intention that the claimed present application requires more features than the features explicitly recorded in each claim. More precisely, as reflected in the corresponding claims, the application point is that the corresponding technical problem can be solved with less than all the features of a certain disclosed single embodiment. Therefore, the claims following the specific embodiments are hereby expressly incorporated into the specific embodiments, wherein each claim itself is a separate embodiment of the present application.

[0064] Those skilled in the art will appreciate that all features described herein (including all features and processes described in the claims, abstract, and attached drawings) can be combined in any combination. Each feature also can be replaced by an alternative feature that serves the same, a similar, or an equivalent function, unless expressly stated otherwise.

[0065] Furthermore, those skilled in the art will recognize that references to particular features contained in embodiments described herein are not intended to exclude these features from other embodiments of the application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The present application will be described with reference to the attached figures, wherein like reference numerals identify like elements typically throughout the several views.

[0066] Embodiments of various components of the present application can be implemented in hardware, software, firmware, or a combination thereof. Those of skill in the art will understand that some or all of the functionality of some of the modules according to embodiments of the present application can be implemented in a microprocessor or digital signal processor (DSP) in practice. The present application can also be implemented as a program (for example, a computer program and computer program product) for executing some or all of the methods described herein. Such a program implementing the present application can be stored on a computer readable medium, or can be transmitted over a network. Such a network can be the Internet, or any other form of network.

[0067] It is to be understood that the embodiments described herein are merely illustrative of the principles of this application and that numerous and varied embodiments can be devised by those skilled in the art without departing from the scope of the application. It is therefore desired that the embodiments described herein be considered in all respects as illustrative rather than limiting. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps other than those listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The use of the word "about" accompanying an element, parameter, property, quantity, value, or the like, means that the element, parameter, property, quantity, value, or the like can vary and, in some embodiments, is not limited to the exact value stated. The use of the word "at least" accompanying an element, parameter, property, quantity, value, or the like, means that the element, parameter, property, quantity, value, or the like can be at least the exact value stated and, in some embodiments, is not limited to the exact value stated.

[0068] The above description is intended to be illustrative and not restrictive. Many other embodiments will be apparent to those of skill in the art upon reviewing the above description. The scope of the application should, therefore, be determined not with reference to the above description, but instead with reference to the appended claims, along with their full scope of equivalents.

Claims

1. A nerve block puncture device, comprising: The needle body, scale, needle, bevel tip, injection hole, injection needle connector and first hose are included. The scale is arranged on the surface of the needle body and is used to display the needle insertion path length and the needle insertion depth under a specified needle insertion angle. The needle body first end is provided with a needle, and the needle far from the needle body is provided with a bevel tip, which is used to penetrate the tissue. The surface of the needle far from the bevel tip is provided with an injection hole, which is used to inject liquid medicine. The second end of the needle body is provided with an injection needle connector, which is used to connect the needle body and the first hose, and the first hose is used to deliver liquid medicine to the needle body.

2. The nerve block puncture device of claim 1, wherein, The bevel tip is in a closed form.

3. The nerve block puncture device of claim 1, wherein, The needle is a developing needle, which develops under the image device.

4. The nerve block puncture device of claim 1, wherein, The bevel tip has a bevel, and the angle of the bevel ranges from 20° to 35°.

5. The nerve block puncture device of claim 1, wherein, The medical staff inserts the needle body at a specified angle, and the needle insertion path length and the needle insertion depth have a specified quantitative relationship, and the scale is used to display the needle insertion path length and the needle insertion depth.

6. The nerve block puncture device of claim 1, wherein The first end of the first hose is provided with a first connector, which is used to connect the first hose and the external injector.

7. The nerve block puncture device of claim 6, wherein The first end of the first connector is provided with a connection interface, which is used to connect injectors of different capacities.

8. The nerve block puncture device of claim 1, wherein The first end of the first hose is provided with a second connector, which is used to connect a self-detection device and a uniform speed injector; The self-detection device is used for saline injection and backflow operation; The uniform speed injector is used for uniform speed injection of liquid medicine.

9. The nerve block puncture device of claim 8, wherein, The self-detection device includes a detector body, a backflow liquid display tube, a detector switch, a pressure display, a backflow exhaust hole and a second hose: The detector body is used for saline injection and backflow operation; The detector body is provided with a backflow liquid display tube inside, which is used to contain saline or backflow liquid; The surface of the detector body is provided with a detector switch, a pressure display and a backflow exhaust hole, the detector switch is used to turn on or off the self-detection device, the pressure display is used to display the pressure of the saline injection, and the backflow exhaust hole is used for exhaust after backflow operation; The detector body is connected with the second connector through the second hose, and the second hose is used to deliver saline and backflow liquid.

10. The nerve block puncture device of claim 8, wherein, The uniform speed injector includes an injector body, a disposable injection tube, a uniform speed injection pump, an injector switch, a third connector, an injection tube connector and a third hose: The first end of the injector body is connected with the disposable injection tube, and the second end of the injector body is connected with the uniform speed injection pump, which is used to uniformly inject liquid medicine into the third hose; The surface of the injector body is provided with an injector switch, which is used to turn on or off the uniform speed injector; The syringe body is connected with a disposable injection tube through the third connecting piece, one end of the disposable injection tube away from the third connecting piece is provided with an injection tube joint, the injection tube joint is used for connecting the disposable injection tube with a third hose, and the third hose is used for conveying the medicine liquid to the first hose.

Images