Nerve block puncture medicine injection system

Abstract

The invention provides a nerve block puncture and medicine injection system which comprises a needle body, scales, a needle head, an oblique-angle needle tip, an injection hole, an injection needle connector, a first hose, a first connecting piece, a self-service detector and a constant-speed injector. 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. The first end of the needle body is provided with a needle head, and one end of the needle head away from the needle body is provided with an oblique-angle needle tip. 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; a first connecting piece is arranged at the end, away from the injection needle connector, of the first hose, the first connecting piece is used for connecting a self-service detector and a constant-speed injector, the self-service detector is used for pushing and injecting normal saline and pumping back, and the constant-speed injector is used for injecting liquid medicine at a constant speed.

Description

Technical Field

[0001] The present application relates to the technical field of medical auxiliary equipment design, and more specifically to a nerve block puncture injection system. Background Art

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

[0003] Currently, injection needles or nerve block puncture needles are mostly used for nerve block operations, but the current puncture failure rate is high. Nerve puncture requires precise positioning, but due to the complex anatomical location and anatomical variations between individuals, it is difficult for the puncture needle to accurately enter the target area. The puncture needle usually only relies on the "feeling of falling into the air" as an important sign of successful puncture, which is not reliable. It is easy to puncture by mistake or enter too deep, increasing the risk of complications. The puncture is more difficult for obese patients, the elderly, and patients with spinal deformities. During the skin puncture process, the puncture needle with an open needle may bring epidermal fragments into the epidural space or cerebrospinal fluid. This phenomenon is called "tissue coring" and may cause a series of complications. Puncture injury may cause epidermal substances to enter the dermis, and then the epidermal cells migrate to the lesion site and proliferate, forming epidermoid cysts. Summary of the invention

[0004] The present application is proposed to solve the above problems. According to one aspect of the present application, a nerve block puncture injection system is provided, including a needle body, a scale, a needle, an angled needle tip, an injection hole, an injection needle connector, a first hose, a first connector, a self-service detector and a uniform speed injector:

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

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

[0007] An injection hole is provided on a side of the needle surface away from the bevel needle tip, 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 a first hose, and the first hose is used to transport the drug solution to the needle body;

[0009] A first connector is provided at one end of the first hose away from the injection needle connector. The first connector is used to connect the self-service detector and the uniform speed syringe. The self-service detector is used for pushing and withdrawing saline solution, and the uniform speed syringe is used for injecting the drug solution at a uniform speed.

[0010] In one embodiment of the present application, the bevel needle tip is in a closed form.

[0011] In one embodiment of the present application, the needle is a developing needle, and the needle can be developed under an imaging device.

[0012] In one embodiment of the present application, the bevel needle tip has a bevel, and the angle of the bevel ranges from 20° to 35°.

[0013] In one embodiment of the present application, the medical staff inserts the needle at a specified angle, and there is a specified quantitative relationship between the needle insertion path length and the needle insertion depth, and the scale is used to display the needle insertion path length and the needle insertion depth.

[0014] In one embodiment of the present application, the system further comprises a second hose, wherein the second hose connects the first connector and the self-service detector, and the second hose is used for conveying physiological saline and withdrawing liquid.

[0015] In one embodiment of the present application, the self-service detector includes a detector body, a backflow liquid display tube, a detector switch, a pressure display and a backflow exhaust hole:

[0016] The detector body is used to push and inject saline solution and perform back extraction operations;

[0017] The detector body is provided with a backdrawing liquid display tube inside, and the backdrawing liquid display tube is used to contain physiological saline or backdrawing liquid;

[0018] The detector body is provided with a detector switch, a pressure display and a back-drawing exhaust hole on its surface. The detector switch is used to turn on or off the self-service detector, the pressure display is used to display the pressure of the injected saline solution, and the back-drawing exhaust hole is used to exhaust air after the back-drawing operation.

[0019] In one embodiment of the present application, the withdrawn liquid display tube is made of a transparent material and is used to observe the withdrawn liquid in a timely manner.

[0020] In one embodiment of the present application, the system further comprises a third hose, wherein the third hose connects the first connector and the uniform speed injector, and the third hose is used to transport the drug solution from the uniform speed injector to the first hose.

[0021] In one embodiment of the present application, the uniform speed injector comprises an injector body, a disposable injection tube, a uniform speed injection pump, an injector switch, a second connecting member and an injection tube joint:

[0022] The first end of the syringe body is connected to the disposable injection tube, and the second end of the syringe body is connected to the uniform speed injection pump, and the uniform speed injection pump is used to uniformly inject the liquid medicine into the disposable injection tube;

[0023] The surface of the syringe body is provided with a syringe switch, and the syringe switch is used to turn on or off the uniform speed syringe;

[0024] The syringe body is connected to the disposable injection tube via the second connecting piece. An injection tube joint is provided at one end of the disposable injection tube away from the second connecting piece. The injection tube joint is used to connect the disposable injection tube with the third hose.

[0025] The nerve block puncture injection system of the present application has a scale on the surface of the needle body, which displays the needle path length and the needle insertion depth at a specified needle insertion angle, to avoid the puncture needle from entering too deep without visual inspection and causing damage to the patient. An angled needle tip is set at one end of the needle so that the angled needle tip is used to penetrate the tissue, and an injection hole is set on the side of the needle away from the angled needle tip so that the injection hole is used to inject the liquid medicine, to avoid the needle tip opening increasing the skin and skin tissue entering the body, forming a dermoid tumor, and causing damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] By describing the embodiments of the present application in more detail in conjunction with the accompanying drawings, the above and other purposes, features and advantages of the present application will become more apparent. The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application. In the accompanying drawings, the same reference numerals generally represent the same components or steps.

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

[0029] Reference numerals:

[0030] 1 needle body; 11 scales;

[0031] 2 needles; 21 bevel needle tip; 22 injection holes;

[0032] 3 injection needle connector; 4 first hose; 5 first connecting piece;

[0033] 6 self-service detector; 61 detector body; 62 backflow liquid display tube; 63 detector switch; 64 pressure display; 65 backflow exhaust hole;

[0034] 7 uniform speed syringe; 71 syringe body; 72 disposable syringe; 73 uniform speed syringe pump; 74 syringe switch; 75 second connecting piece; 76 syringe tube connector;

[0035] 8 second hose; 9 third hose. DETAILED DESCRIPTION

[0036] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present application. However, it is apparent to those skilled in the art that the present application can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present application, some technical features well known in the art are not described.

[0037] It should be understood that the present application can be implemented in different forms and should not be construed as being limited to the embodiments presented herein. On the contrary, providing these embodiments will make the disclosure thorough and complete and fully convey the scope of the present application to those skilled in the art. In the accompanying drawings, the sizes and relative sizes of layers and regions may be exaggerated for clarity. The same reference numerals throughout represent the same elements.

[0038] Spatially relative terms such as "under," "below," "below," "under," "above," "above," etc., may be used herein for ease of description to describe the relationship of an element or feature shown in the figures to other elements or features. It should be understood that in addition to the orientations shown in the figures, the spatially relative terms are intended to include different orientations of the device in use and operation. For example, if the device in the accompanying drawings is flipped, then the elements or features described as "under other elements" or "under" or "under" will be oriented as "on" the other elements or features. Therefore, the exemplary terms "under" and "under" may include both upper and lower orientations. The device may be oriented otherwise (rotated 90 degrees or other orientations) and the spatial descriptors used herein are interpreted accordingly.

[0039] The purpose of the terms used herein is only to describe specific embodiments and is not intended to be limiting of the present application. When used herein, the singular forms "a", "an", and "said / the" are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "consisting of" and / or "comprising", when used in this specification, determine the presence of the features, integers, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, parts and / or groups. When used herein, the term "and / or" includes any and all combinations of the relevant listed items.

[0040] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by ordinary technicians in the field of this application. It will also be understood that terms such as those defined in commonly used dictionaries should be understood to have a meaning consistent with their meaning in the context of the relevant art and / or this specification, and should not be interpreted in an ideal or overly formal sense unless expressly defined as such herein.

[0041] In order to make the purpose, technical solutions and advantages of the present application more obvious, the example embodiments according to the present application will be described in detail with reference to the accompanying 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 work should fall within the scope of protection of the present application.

[0042] Therefore, in view of the existence of the above-mentioned technical problems, the present invention proposes a nerve block puncture injection system, referring to Figure 1-2 The nerve block puncture injection system used to implement the embodiment of the present invention is described below. Figure 1 , Figure 2 As shown, the nerve block puncture injection system includes a needle body 1, a scale 11, a needle 2, an angled needle tip 21, an injection hole 22, an injection needle connector 3, a first hose 4, a first connector 5, a self-service detector 6 and a uniform speed injector 7:

[0043] like Figure 2As shown, the surface of the needle body 1 is provided with a scale 11, and the scale 11 is used to display the length of the needle insertion path and the depth of the needle insertion at the specified needle insertion angle. When the needle 2 and the needle body 1 enter the body, the medical staff can obtain the length of the needle insertion path and the depth of the needle insertion at the specified needle insertion angle through the scale 11 on the surface of the needle body 1 outside the body. Avoid the needle body 1 from entering too deep when the needle 2 is not visible, thereby increasing the risk of complications. Part of the needle body 1 is made of a harder material, so it can move accurately along the predetermined path during puncture, avoiding bending and loss of control of the puncture direction during puncture, resulting in puncture failure or increased related complications. Traditional intraspinal puncture needles are thicker, and the sacral canal puncture site is close to the perianal area. The greater the damage, the greater the chance of infection. The needle body 1 is thinner than traditional puncture needles, reducing the risk of potential infection.

[0044] A needle 2 is provided at the first end of the needle body 1, and an angled needle tip 21 is provided at the end of the needle 2 away from the needle body 1, and the angled needle tip 21 is used to penetrate tissue. This design enables it to penetrate tissue more easily and reduce damage to surrounding tissue. An injection hole 22 is provided on the surface of the needle 2 away from the angled needle tip 21, and the injection hole 22 is used to inject liquid medicine. When operated by medical staff, the inclined surface of the angled needle tip 21 faces downward, and puncture is performed under ultrasound guidance. The injection hole 22 causes less damage to the skin and skin tissue, thereby avoiding increasing the amount of skin and skin tissue entering the body, forming a dermoid tumor, and causing damage. The injection hole 22 is opened at the top to reduce unexpected intravascular injections and reduce poisoning caused by the injection of local anesthetics into the blood vessels, which may seriously endanger life safety.

[0045] like Figure 1 As shown, the second end of the needle body 1 is provided with an injection needle connector 3, which is used to connect the needle body 1 and the first hose 4, and the first hose 4 is used to transport the drug solution to the needle body 1. The material of the first hose 4 can be PU, silicone or PVC. The end of the first hose 4 away from the injection needle connector 3 is provided with a first connector 5, which is used to connect the self-service detector 6 and the uniform speed syringe 7, the self-service detector 6 is used for pushing and withdrawing physiological saline, and the uniform speed syringe 7 is used to inject the drug solution at a uniform speed.

[0046] In order to determine whether the function of the intravenous indwelling needle is normal and to remove the residual drugs in the catheter to prevent the residual drugs from affecting the subsequent infusion effect, the self-service detector 6 pushes the normal saline. After the normal saline is pushed, it is withdrawn. The withdrawal operation can confirm whether the needle 2 has correctly entered the blood vessel to avoid misentering the subcutaneous or other parts. In order to avoid inaccurate drug dosage due to speed fluctuations and effectively prevent blood pressure fluctuations or other complications caused by too fast or too slow infusion speed, the drug solution is uniformly injected into the first hose 4 through the uniform speed injector 7. The self-service detector 6 and the uniform speed injector 7 can be connected to the first connecting piece 57 respectively. After the self-service detector 6 pushes the normal saline and withdraws the operation, it is confirmed that the conditions for the infusion of the drug solution are met, and the uniform speed injector 7 injects the drug solution into the first hose 4 at a uniform speed.

[0047] The nerve block puncture injection system according to the embodiment of the present invention is provided with a scale 11 on the surface of the needle body 1, and the scale 11 displays the needle insertion path length and the needle insertion depth at the specified needle insertion angle, so as to avoid the needle body 1 entering too deep without being visible and causing damage to the patient. An angled needle tip 21 is provided at one end of the needle 2, so that the angled needle tip 21 is used to penetrate the tissue, and an injection hole 22 is provided on the side of the needle 2 away from the angled needle tip 21, so that the injection hole 22 is used to inject the liquid medicine, so as to avoid the needle tip opening increasing the skin and skin tissue entering the body, forming a dermoid tumor, and causing damage. The first connecting member 5 connects the self-service detector 6 and the uniform speed injector 7, and the self-service detector 6 is used for pushing and withdrawing physiological saline, clearing the residual drug in the catheter, preventing the residual drug from affecting the subsequent infusion effect, and confirming whether the needle 2 has entered the blood vessel correctly to avoid mistakenly entering the subcutaneous or other parts. The uniform speed injector 7 is used to inject the liquid medicine at a uniform speed to prevent blood pressure fluctuations or other complications caused by too fast or too slow infusion speed.

[0048] In the embodiment of the present application, the bevel needle tip 21 is in a closed form. When the needle tip is open, the skin and subcutaneous tissue will be injected into the body, forming a dermoid tumor and causing damage. When the needle tip is closed, adverse reactions caused by tissue implantation can be avoided.

[0049] In the embodiment of the present application, the needle 2 is a developing needle 2, and the needle 2 can be developed under an imaging device. The display effect of the needle 2 in an imaging device (such as ultrasound, MRI, etc.) is enhanced by specific technical means, making it easier to be identified and located, so as to improve the positioning accuracy of the needle body 1, reduce damage to 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 determined in combination with the scale 11.

[0050] In the embodiment of the present application, the bevel needle tip 21 has a bevel, and the angle of the bevel ranges from 20° to 35°. In the blind puncture method, the "missing feeling" is often one of the signs of successful puncture. Because the needle tip is blunt, the missing feeling is not obvious. Even under ultrasound guidance, puncture into the body will cause forward rush, causing damage to blood vessels and nerves, and even adverse events such as local anesthetic poisoning after injection, threatening patient safety. The angle of the bevel ranges from 20° to 35°, which can protect the blood vessels and tissues at the puncture site as much as possible and enhance the "missing feeling" of puncture.

[0051] In the embodiment of the present application, the medical staff inserts the needle body 1 at a specified angle, and the needle insertion path length and the needle insertion depth have a specified quantitative relationship. The scale 11 is used to display the needle insertion path length and the needle insertion depth. The medical staff usually inserts the needle at an angle of 45°. At a needle insertion angle of 45°, the needle insertion path length is a percentage of the needle insertion depth. Therefore, the corresponding insertion depth can be inferred from the insertion path length, and the scale 1111 displays the insertion path length and the insertion depth. Avoid the needle body 11 from entering too deep when the needle 22 cannot be seen, causing damage or even irreversible damage.

[0052] like Figure 1 As shown, in the embodiment of the present application, the system further comprises a second hose 8, which connects the first connector 5 and the self-service detector 6, and is used to transport saline and withdraw liquid. The second hose 8 can be made of PU, silicone or PVC.

[0053] like Figure 1 As shown, in the embodiment of the present application, the self-service detector 6 includes a detector body 61, a withdrawal liquid display tube 62, a detector switch 63, a pressure display 64 and a withdrawal exhaust hole 65: the detector body 61 is used to push physiological saline and perform withdrawal operations; a withdrawal liquid display tube 62 is provided inside the detector body 61, and the withdrawal liquid display tube 62 is used to hold physiological saline or withdrawal liquid; a detector switch 63, a pressure display 64 and a withdrawal exhaust hole 65 are provided on the surface of the detector body 61, the detector switch 63 is used to turn on or off the self-service detector 6, the pressure display 64 is used to display the pressure of the pushed physiological saline, and the withdrawal exhaust hole 65 is used to exhaust air after the withdrawal operation.

[0054] Physiological saline is stored in the backflow liquid display tube 62. When the detector switch 63 is pressed, the detector body 61 injects the physiological saline in the backflow liquid display tube 62 into the needle body 1 and the needle 2 through the second hose 8, the first hose 4, so as to judge the function of the indwelling needle and ensure the smoothness of the catheter, thereby avoiding problems such as blockage or leakage during the infusion process. The pressure display 64 can display the pressure during the push injection process to prevent local bulges, which helps to promptly detect blockage or leakage problems in the infusion line, thereby preventing insufficient or interrupted drug delivery and ensuring the treatment effect. If the pressure displayed by the pressure display 64 exceeds the specified range, re-puncture. After re-puncture, push the physiological saline again until the pressure displayed by the pressure display 64 is normal.

[0055] After the normal saline solution is pushed, the detector body 61 performs a backdrawing operation, and the backdrawn liquid passes through the needle 2 and the needle body 1, the first hose 4, and the second hose 8 into the backdrawn liquid display tube 62. The backdrawn liquid display tube 62 can be used to observe whether there is blood and cerebrospinal fluid in the backdrawn. If there is, it means that the puncture position is abnormal and re-puncture can be performed. After re-puncture, push the normal saline solution again and perform the backdrawing operation until the backdrawn liquid is normal. The backdrawing exhaust hole 65 is mainly to ensure that the gas in the system or equipment is completely exhausted to avoid problems caused by residual gas, and to prevent the overflow of the drug solution and tissue infection.

[0056] In an embodiment of the present application, the backdrawn liquid display tube 62 is made of a transparent material and is used to observe the backdrawn liquid in time. Through backdrawing, it can be judged whether the catheter is unobstructed, whether there is blockage or damage. If there is no blood or resistance in the backdrawing, it may indicate that the catheter is blocked or the puncture needle has not entered the reservoir, and it is necessary to adjust the position of the needle 2 or replace the catheter in time. The backdrawn liquid display tube 62 can help find blood reflux, blood clots or other abnormal conditions, thereby avoiding the occurrence of complications such as phlebitis and catheter-related infections.

[0057] like Figure 1 As shown, in the embodiment of the present application, the system further includes a third hose 9, which connects the first connector 5 and the uniform speed injector 7, and is used to transport the liquid medicine from the uniform speed injector 7 to the first hose 4. The third hose 9 can be made of PU, silicone or PVC.

[0058] like Figure 1 As shown, in the embodiment of the present application, the uniform speed syringe 7 includes a syringe body 71, a disposable syringe 72, a uniform speed injection pump 73, a syringe switch 74, a second connecting piece 75 and an injection tube connector 76: the first end of the syringe body 71 is connected to the disposable syringe 72, and the second end of the syringe body 71 is connected to the uniform speed injection pump 73, and the uniform speed injection pump 73 is used to inject the medicine into the disposable syringe 72 at a uniform speed; a syringe switch 74 is provided on the surface of the syringe body 71, and the syringe switch 74 is used to turn on or off the uniform speed syringe 7; the syringe body 71 is connected to the disposable syringe 72 through the second connecting piece 75, and an injection tube connector 76 is provided at one end of the disposable syringe 72 away from the second connecting piece 75, and the injection tube connector 76 is used to connect the disposable syringe 72 and the third hose 9.

[0059] The uniform injection pump 73 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, and the syringe can be driven by a stepper motor and a reducer to complete the injection operation in a uniform linear motion, thereby achieving uniform microinjection. In practical applications, the injection speed and pressure of the uniform injection pump 73 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, the use of a stable injection speed and pressure can reduce damage to blood vessels. In one embodiment, the uniform injection pump 73 can inject drugs in a pulsed manner within a set time. At the same time, the uniform injection pump 73 also has an alarm function, such as an alarm when undervoltage, overvoltage or injection is completed, to improve the safety of use. If the pressure increases abnormally during the injection process, the injection can be stopped and an alarm can be sounded to prevent abnormal tissue injection. In one embodiment, the uniform injection pump 73 can perform segmented injection. When the target tissue site requires multi-point injection, the drug dosage can be set in advance, and the uniform injection pump 73 is designed for segmented injection. When one segment of injection is completed, stop, adjust the site for a second segment injection, and complete the multi-point injection. When the syringe switch 74 is pressed, the uniform speed injection pump 73 uniformly injects the liquid medicine into the third hose 9, the first hose 4, the needle body 1 and the needle 2. In one embodiment, the uniform speed injection pump 73 can push the measured liquid multiple times. After the uniform speed injection pump pushes the measured liquid, the detector body 61 draws back to check whether there is blood or other conditions until the drawn back liquid is normal.

[0060] Before the puncture device is used for puncture, the patient takes a prone or lateral position, and a 7–13MHz high-frequency linear array probe is selected. The puncture area is disinfected and covered with a drape according to the requirements of the surgical disinfection range. The ultrasound probe coated with coupling agent is wrapped with a sterile lens cover; an ultrasound longitudinal image is obtained in the puncture area. The depth of the puncture target position is measured to determine the insertion depth of the needle body 1 at 45°. A local anesthetic or therapeutic drug is prepared and passed through the first hose 4, and the air is exhausted through the first hose 4 until the drug solution is discharged from the needle tip, which is about 2ml. Under ultrasound guidance, the bevel of the bevel needle tip 21 faces downward, and the needle is inserted at 45°. The bevel needle tip 21 has an enhanced imaging effect and can track the puncture path. If the ligament tissue increases the difficulty of imaging, the position can be further judged in combination with the calibration depth. If the puncture is successful, the sacrococcygeal ligament can be seen to rise and fall when the assistant manually administers the drug in pulsed mode. If there is resistance to the injection and it is difficult to push the needle, the angle of the needle body 1 can be reduced and continued to advance 1-2mm to push the local anesthetic or therapeutic drug.

[0061] Therefore, according to the embodiment of the present application, the nerve block puncture and injection system is marked with a scale on the surface of the needle, and the scale displays the length of the needle insertion path and the depth of the needle insertion at the specified needle insertion angle, so as to avoid the needle body entering too deeply without visibility and causing damage to the patient. An angled needle tip is provided at one end of the needle so that the angled needle tip is used to penetrate the tissue, and an injection hole is provided on the side of the needle away from the angled needle tip so that the injection hole is used to inject the liquid medicine, so as to avoid the opening of the needle tip increasing the amount of skin and skin tissue entering the body, forming a dermoid tumor, and causing damage. The first connecting piece connects the self-service detector and the uniform speed syringe. The self-service detector is used for pushing and withdrawing saline solution, clearing residual drugs in the catheter, preventing drug residues from affecting the subsequent infusion effect, and confirming whether the needle has entered the blood vessel correctly to avoid mistaken insertion into the subcutaneous or other parts. The uniform speed syringe is used to inject the liquid medicine at a uniform speed to prevent blood pressure fluctuations or other complications caused by too fast or too slow infusion speed.

[0062] Although example embodiments have been described herein with reference to the accompanying drawings, it should be understood that the above example embodiments are merely exemplary and are not intended to limit the scope of the present application to this. A person of ordinary skill in the art may make various changes and modifications therein without departing from the scope and spirit of the present application. All these changes and modifications are intended to be included within the scope of the present application as required by the appended claims.

[0063] In the several embodiments provided in this 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 schematic, for example, the division of the units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed.

[0064] In the description provided herein, a large number of specific details are described. However, it is understood that the embodiments of the present application can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0065] Similarly, it should be understood that in order to streamline 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, the various features of the present application are sometimes grouped together into a single embodiment, figure, or description thereof. However, the method of the present application should not be interpreted as reflecting the following intention: the claimed application requires more features than the features clearly stated in each claim. More specifically, 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 single disclosed embodiment. Therefore, the claims following the specific embodiment are hereby explicitly incorporated into the specific embodiment, wherein each claim itself serves as a separate embodiment of the present application.

[0066] It will be understood by those skilled in the art that, except for mutually exclusive features, all features disclosed in this specification (including the accompanying claims, abstracts and drawings) and all processes or units of any method or device disclosed in this specification may be combined in any combination. Unless otherwise expressly stated, each feature disclosed in this specification (including the accompanying claims, abstracts and drawings) may be replaced by an alternative feature that provides the same, equivalent or similar purpose.

[0067] In addition, those skilled in the art will appreciate that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present application and form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.

[0068] The various component embodiments of the present application can be implemented in hardware, or implemented in software modules running on one or more processors, or implemented in a combination thereof. It should be understood by those skilled in the art that a microprocessor or digital signal processor (DSP) can be used in practice to implement some or all functions of some modules according to the embodiments of the present application. The application can also be implemented as a part or all of a program (e.g., a computer program and a computer program product) for performing the method described herein. Such a program implementing the present application can be stored on a computer-readable medium, or can have the form of one or more signals. Such a signal can be downloaded from an Internet website, or provided on a carrier signal, or provided in any other form.

[0069] It should be noted that the above embodiments illustrate the present application rather than limit the present application, and those skilled in the art can design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference symbol between brackets should not be constructed as a limitation to the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "one" or "an" before an element does not exclude the presence of multiple such elements. The use of the words first, second, and third, etc. does not indicate any order. These words can be interpreted as names.

[0070] The above is only a specific implementation or description of a specific implementation of the present application, and the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. The protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A nerve block puncture injection system, characterized in that: It includes a needle body, a scale, a needle, an angled needle tip, an injection hole, an injection needle connector, a first hose, a first connecting piece, a self-service detector and a uniform speed syringe: The needle body surface is provided with a scale, and the scale is used to display the needle insertion path length and the needle insertion depth at a specified needle insertion angle; The first end of the needle body is provided with a needle head, and the end of the needle head away from the needle body is provided with an angled needle tip, and the angled needle tip is used to penetrate tissue; An injection hole is provided on a side of the needle surface away from the bevel needle tip, and the injection hole is used to inject liquid medicine; 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 a first hose, and the first hose is used to transport the drug solution to the needle body; A first connector is provided at one end of the first hose away from the injection needle connector. The first connector is used to connect the self-service detector and the uniform speed syringe. The self-service detector is used for pushing and withdrawing saline solution, and the uniform speed syringe is used for injecting the drug solution at a uniform speed.

2. The nerve block puncture injection system according to claim 1, characterized in that: The bevel needle tip is in a closed form.

3. The nerve block puncture injection system according to claim 1, characterized in that: The needle is a developing needle, and the needle can be developed under imaging equipment.

4. The nerve block puncture injection system according to claim 1, characterized in that: The bevel needle tip has a bevel, and the angle of the bevel ranges from 20° to 35°.

5. The nerve block puncture injection system according to claim 1, characterized in that: The medical staff inserts the needle at a specified angle, and there is a specified quantitative relationship between the length of the needle insertion path and the depth of the needle insertion. The scale is used to display the length of the needle insertion path and the depth of the needle insertion.

6. The nerve block puncture injection system according to claim 1, characterized in that: The system further comprises a second hose, wherein the second hose connects the first connector and the self-service detector, and the second hose is used for conveying physiological saline and withdrawing liquid.

7. The nerve block puncture injection system according to claim 1, characterized in that: The self-service detector includes a detector body, a backflow liquid display tube, a detector switch, a pressure display and a backflow exhaust hole: The detector body is used to push and inject saline solution and perform back extraction operations; The detector body is provided with a backdrawing liquid display tube inside, and the backdrawing liquid display tube is used to contain physiological saline or backdrawing liquid; The detector body is provided with a detector switch, a pressure display and a back-drawing exhaust hole on its surface. The detector switch is used to turn on or off the self-service detector, the pressure display is used to display the pressure of the injected saline solution, and the back-drawing exhaust hole is used to exhaust air after the back-drawing operation.

8. The nerve block puncture injection system according to claim 7, characterized in that: The withdrawn liquid display tube is made of transparent material and is used to observe the withdrawn liquid in time.

9. The nerve block puncture injection system according to claim 1, characterized in that: The system further comprises a third hose, wherein the third hose connects the first connector and the uniform speed injector, and the third hose is used for conveying the liquid medicine from the uniform speed injector to the first hose.

10. The nerve block puncture injection system according to claim 9, characterized in that: The uniform speed syringe comprises a syringe body, a disposable syringe tube, a uniform speed injection pump, a syringe switch, a second connecting piece and a syringe tube joint: The first end of the syringe body is connected to the disposable injection tube, and the second end of the syringe body is connected to the uniform speed injection pump, and the uniform speed injection pump is used to uniformly inject the liquid medicine into the disposable injection tube; The surface of the syringe body is provided with a syringe switch, and the syringe switch is used to turn on or off the uniform speed syringe; The syringe body is connected to the disposable injection tube via the second connecting piece. An injection tube joint is provided at one end of the disposable injection tube away from the second connecting piece. The injection tube joint is used to connect the disposable injection tube with the third hose.

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