CN220124784U - Novel minimally invasive anesthesia puncture auxiliary needle - Google Patents

Abstract

The utility model provides a novel minimally invasive anesthesia puncture auxiliary needle, which is used for puncture guidance of a lumbar anesthesia needle and comprises a needle body for accommodating the lumbar anesthesia needle, a needle tip with an inclined surface shape and a needle tail end for being coupled to a handle, wherein the handle is provided with a cavity for guiding the lumbar anesthesia needle, the cavity is configured to have a tapered cross-sectional dimension in the extending direction of the needle tail end towards the needle tip, and the needle tail end coupled to the handle is communicated with the cavity. The utility model provides a novel minimally invasive anesthesia puncture auxiliary needle which can reduce lumbar anesthesia puncture damage and assist medical staff to accurately grasp the position and depth of a needle penetrating into a body.

Description

Novel minimally invasive anesthesia puncture auxiliary needle

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a puncture auxiliary needle, and especially relates to a novel minimally invasive anesthesia puncture auxiliary needle.

Background

Lumbar anesthesia needle is an operation anesthesia method for anesthesia of the lower body, and is commonly used in the following cases: gynecological operations requiring caesarean section, hysterectomy and other surgical anesthesia; pelvic, lower limb or foot surgery; bladder surgery or prostate surgery; pain management, such as lumbar disc herniation, and the like.

In order to reduce pain and tissue injury to the patient during puncturing, the diameter of the employed fine lumbar anesthesia needle is generally less than 1mm. During the puncturing process, the following problems may occur with the delicate lumbar anesthesia needle: needle bending or breakage causes failure of penetration or injury to the patient; the needle is soft, which may cause difficulty in needle insertion for medical staff with insufficient experience; if a single needle insertion fails, multiple trial and error may be required, giving pain and discomfort to the patient.

The prior art therefore proposes to use a puncture assisting needle to assist the puncture of a lumbar anesthesia needle, the puncture assisting needle being generally structured as a needle tube structure with at least a hollow passage, the tube diameter of the needle tube being larger than that of the lumbar anesthesia needle, and a hollow tube therein being capable of passing through at least the lumbar anesthesia needle of a predetermined size. Under the condition of using the puncture auxiliary needle, the puncture auxiliary needle is firstly used for puncturing and entering the patient, then the lumbar anesthesia needle is used for penetrating into the patient through the hollow channel of the puncture auxiliary needle, and the hollow channel plays a role in limiting the lumbar anesthesia needle puncturing process.

However, the condition that the auxiliary needle is difficult to penetrate still easily appears in the in-process of penetrating the auxiliary needle with the lumbar anesthesia needle, because when carrying out the puncture, most circumstances are single operator and carry out the puncture operation, under the condition of using the auxiliary needle, it needs one hand to hold up the afterbody of auxiliary needle, and the other hand is aimed at lumbar anesthesia and is penetrated auxiliary needle afterbody, because lumbar anesthesia needle is fairly soft, leads to not aiming at easily or is stretching into in-process lumbar anesthesia needle conflict auxiliary needle inside wall after aiming at, thereby lead to the needle efficiency of inserting to be lower, the problem such as needle accuracy is not high. Therefore, there is a need for an auxiliary needle for lumbar anesthesia needle penetration that can reduce lumbar anesthesia puncture injuries and can assist medical staff in accurately grasping the position and depth of needle penetration into the body.

Furthermore, there are differences in one aspect due to understanding to those skilled in the art; on the other hand, as the inventors studied numerous documents and patents while the present utility model was made, the text is not limited to details and contents of all the details and contents, but it is not the case that the present utility model patent does not have these prior art features, but the present utility model patent has all the prior art features, and the applicant remains in the background art to which the rights of the related prior art are added.

Disclosure of Invention

In order to overcome the defects of the prior art, the novel minimally invasive anesthesia puncture auxiliary needle provided by the utility model is used for puncture guiding of a lumbar anesthesia needle and is characterized by comprising a needle body for accommodating the lumbar anesthesia needle, wherein the needle body is provided with a needle tip in an inclined plane shape and a needle tail end for being coupled to a handle, the handle is provided with a cavity for guiding the lumbar anesthesia needle, the cavity is configured to have a tapered cross-sectional dimension in the extending direction of the needle tail end towards the needle tip, and the needle tail end coupled to the handle is communicated with the cavity.

According to the scheme, the inner cavity of the tail end handle part of the auxiliary needle is of a structure with the tapered opening, the opening size of the inner cavity of the tail end of the auxiliary needle is the largest at the tail end of the corresponding lumbar anesthesia needle, the lumbar anesthesia needle can be well received, and the auxiliary needle is convenient for operators to align and penetrate into the lumbar anesthesia needle. The tapered structure of the opening enables the lumbar anesthesia needle to be accurately guided in the process of continuously passing through the handle and entering the needle body, reduces horizontal shaking of the lumbar anesthesia needle in the inner cavity, and effectively prevents the lumbar anesthesia needle from being damaged due to interference or friction between the lumbar anesthesia needle and the inner cavity wall. The structure can realize rapid puncture of the lumbar anesthesia needle, improve the operation accuracy of operators and improve the puncture efficiency.

Preferably, the degree of taper of the cross-sectional dimension of the first section of the cavity near the needle trailing end is configured to be greater than the degree of taper of the cross-sectional dimension of the second section distal from the needle trailing end.

The first section chamber designs for comparatively mild convergent structure for its inside wall changes comparatively gently, can open more spaces for the penetration of waist tingling needle, and mild inside wall has reduced the possibility that waist tingling needle contradicts inside wall damage. The second section cavity is designed into a steeper tapered structure, so that a cavity channel of the second section cavity can be narrowed rapidly, and an accurate and stable guiding effect can be provided in the process from the lumbar anesthesia needle penetrating into the handle to the needle body.

Preferably, the first surface and the fourth surface of the handle are flat plane structures, the second surface and the third surface of the handle are convex block structures with interval protrusions, the first surface and the fourth surface are end surfaces of the handle parallel to a main surface of the needle tip, which is provided with an inclined surface, as shown in the right half example diagram of fig. 1 of the scheme, and the third surface and the second surface are end surfaces of the handle parallel to a side of the needle tip, which is not provided with an inclined surface, as shown in the left half example diagram of fig. 1 of the scheme.

The aim at of this configuration is, makes things convenient for medical staff to discern the inclined plane direction of auxiliary needle, when carrying out auxiliary needle puncture, needs the inclined plane of control needle pointed end to inwards puncture with the mode of determining the direction (for example, back to patient's skin), and this device disposes different faces and corresponds different structures, can make things convenient for medical staff to confirm the direction of needle pointed end inclined plane fast.

Preferably, the bump structures of the second face and the third face are configured to protrude outward more than the middle portion near both ends of the handle, so that the medical staff can pinch the fingers to exert force.

Preferably, the handle bump structure is arranged to facilitate increasing friction between the hand and the handle.

Preferably, the number of the lug structures on the outer wall of the handle can be 2, 3, 4 and the like, and the lug structures on the handle are favorable for increasing friction force and avoiding medical accidents caused by sliding of the auxiliary needle.

Preferably, the handle is provided with a cavity for guiding the lumbar anesthesia needle, the small end of the cavity is communicated with the tail end of the needle, the large end of the cavity is wide and large and is used for introducing the lumbar anesthesia needle to perform lumbar anesthesia puncture operation, and the radial movable range of the lumbar anesthesia needle is gradually reduced in the process of penetrating into the handle, so that medical staff can quickly master the operation skills of lumbar anesthesia puncture technology.

Preferably, the handle is made of medical grade plastic.

Preferably, the length of the auxiliary needle is configured to be a first length.

Preferably, the length of the needle body of the auxiliary needle is 30-50mm, and the length of the needle body can be adaptively adjusted in the practical application process.

Preferably, the novel minimally invasive anesthesia puncture auxiliary needle provided by the utility model is suitable for assisting the fine lumbar anesthesia needle to puncture.

Preferably, the needle body is provided with graduations, and graduation lines are arranged at equal intervals along the direction from the needle tip to the needle tail.

Preferably, graduations are provided every 10mm in the direction from the needle tip to the needle tail.

Wherein, the central positions of the adjacent graduations are separated by 10mm, and the tip of the needle tip is separated from the central position of the adjacent graduations by 10mm because the needle tip is an inclined plane.

In particular, graduations can be arranged at intervals of 5mm along the direction from the needle tip to the needle tail end, and the graduation interval can be determined according to actual conditions so as to meet different application scenes and requirements.

Preferably, the scale is 1 to a plurality of circular rings circumferentially arranged on the needle body of the auxiliary needle.

Preferably, the ring has a first width.

Preferably, the annular width is 1mm.

Preferably, the annular space at the same scale position is 1mm.

In particular, the ring width and the ring pitch may be set to 0.5mm, or the ring width is 1mm, the ring pitch is 0.5mm, or the ring width is 0.5mm, and the ring pitch is 1mm, which are not particularly limited, and the setting manner depends on the actual situation.

Further, the number of the circular rings of the plurality of scales arranged at intervals along the needle tip to the needle tail is configured in an incremental manner.

Specifically, taking the example of setting scales at intervals of 10mm along the direction from the needle tip to the needle tail end, the position 10mm away from the needle tip is the 1 st scale, 1 circular ring is arranged, the position 20mm away from the needle tip is the 2 nd scale, 2 circular rings are arranged, the position 30mm away from the needle tip is the 3 rd scale, 3 circular rings are arranged, the position 40mm away from the needle tip is the 4 th scale, and 4 circular rings are arranged. Equidistant setting to the scale that ring quantity increases gradually is simple, clear, avoids penetrating too dark or shallow medical accident that leads to, has accelerated the puncture process simultaneously.

Preferably, the scale may be identified by a process such as spray printing or laser engraving.

Preferably, the inner diameter of the needle body of the auxiliary needle is 0.4-0.6mm, and the outer diameter of the needle body is 0.6-0.8mm, so that the selection of the epidural needle by medical staff is avoided, and the probability of medical accidents is reduced particularly when the epidural needle with unsuitable size is selected.

Preferably, when the puncture operation is performed, the novel minimally invasive anesthesia puncture auxiliary needle provided by the utility model is used for penetrating the skin and the muscle of a patient to a certain depth, and then the lumbar anesthesia needle penetrates into the needle body from the cavity of the auxiliary needle handle and penetrates out of the needle tip for performing the lumbar anesthesia puncture operation.

Specifically, medical personnel need to determine the depth of insertion in conjunction with the patient's actual condition.

Preferably, under the instruction of the needle body scale of the auxiliary needle, medical staff can know the insertion depth of the auxiliary needle more conveniently and rapidly, after reaching the proper depth, the lumbar anesthesia needle penetrates into the needle body from the cavity of the auxiliary needle handle, and the continuous penetration depth of the lumbar anesthesia needle is judged according to experience and the scale on the needle body.

The utility model has the advantages that:

1. the utility model provides a novel minimally invasive anesthesia puncture auxiliary needle, wherein the tail end of the needle is coupled with a handle for guiding the puncture of a lumbar anesthesia needle, the outer wall of the handle is provided with a plurality of convex block structures, the handle is provided with a cavity for guiding the lumbar anesthesia needle, and the handle is configured to have a tapered section size in the extending direction of the tail end of the needle towards the tip of the needle. The bump structure on the handle is beneficial to increasing friction force, so that medical staff can hold the auxiliary needle more firmly; the cavity arranged in the handle enables the radial movable range of the lumbar anesthesia needle to be gradually reduced when the lumbar anesthesia needle is inserted into the handle, thereby being beneficial to assisting medical staff to more conveniently and rapidly penetrate the lumbar anesthesia needle into a patient along the needle body of the auxiliary needle, and particularly being beneficial to the medical staff with insufficient experience to rapidly master the operation skills of the lumbar anesthesia puncture technology.

2. The needle body of the novel minimally invasive anesthesia puncture auxiliary needle provided by the utility model is provided with the scale marks at equal intervals along the direction from the needle tip to the needle tail end, and the scale marks are circumferentially arranged on 1 to a plurality of circular rings on the needle body of the auxiliary needle in a surrounding manner. The scale is simple and clear, can assist medical staff to know the depth of the lumbar anesthesia needle penetrating into the patient, avoid the medical accident caused by too deep or too shallow penetration, avoid medical staff to utilize the auxiliary needle in the prior art to carry out the puncturing operation simultaneously, the number scale or the awkward condition of scale mark to lead to needing to carefully look over the scale mark when needing to know the puncturing depth, and quicken the puncturing process.

3. Based on the requirements of adapting the sizes of the available fine lumbar anesthesia needles (25G, 26G and 27G) and the hardness of the auxiliary needles, the needle body of the novel minimally invasive anesthesia puncture auxiliary needle provided by the utility model is set to have the inner diameter of 0.4-0.6mm, the outer diameter of 0.6-0.8mm and the length of 30-50mm. The method avoids the selection of medical staff to different types of epidural needles, particularly avoids the increase of puncture difficulty and the increase of probability of occurrence of penetrable headache after dura mater puncture due to accidents when the epidural needles are too thick, and simultaneously avoids the problems of lumbar anesthesia needle deflection, bending, even breakage and the like which are possibly caused when only using the lumbar anesthesia needle to perform puncture operation in the puncture process due to the guiding effect of the auxiliary lumbar anesthesia needle.

Drawings

FIG. 1 is a schematic diagram of the structure of a novel minimally invasive anesthesia puncture assisting needle of the present utility model;

fig. 2 is a cross-sectional view of the handle of a novel minimally invasive anesthesia puncture assistance needle of the present utility model.

List of reference numerals

100: a needle body; 110: a needle tip; 120: a needle tail end; 200: a handle; 210: a cavity.

Detailed Description

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and the like are used in the description of the present utility model for the purpose of illustration only and do not represent the only embodiment.

Unless defined otherwise, all technical and scientific terms used in the specification of the present utility model have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used in the description of the present utility model includes any and all combinations of one or more of the associated listed items.

The following is a detailed description with reference to fig. 1 to 2.

As shown in fig. 1, the novel minimally invasive anesthesia puncture auxiliary needle provided by the utility model is used for puncture guiding of a lumbar anesthesia needle and is characterized by comprising a needle body 100 for accommodating the lumbar anesthesia needle, a needle tip 110 with a bevel shape and a needle tail 120 for being coupled to a handle 200, wherein the handle 200 is provided with a cavity 210 for guiding the lumbar anesthesia needle, the cavity 210 is configured to have a tapered cross-sectional dimension in the extending direction of the needle tail 120 towards the needle tip 110, and the needle tail 120 coupled to the handle 200 is communicated with the cavity 210.

According to a preferred embodiment, the degree of tapering of the cross-sectional dimension of the first section of the cavity near the needle end is configured to be greater than the degree of tapering of the cross-sectional dimension of the second section remote from the needle end. By "taper of the cross-sectional dimension" is meant that the point of the path from the end of the handle distal to the needle end in the axial direction of the handle (and also in the axial direction of the needle body) to the needle end is set as an independent variable x, and at a certain point of the path x, the cross-sectional dimension of the cavity (which can be regarded as the cross-sectional area) in a plane perpendicular to the axial direction of the handle and containing the point x is set as an independent variable y, and if x and y are used as the relation, the value of y is smaller as x gets closer to the needle end. The "degree of taper of the cross-sectional dimension" refers to the slope or derivative of the relationship between x and y. Based on mathematical knowledge, the larger the derivative value represents the larger the amount of change in the dependent variable y as the unit independent variable x changes. Intuitively, it can be said that the greater the extent of the medial constriction of the lumen, the steeper the lumen wall thereof. The purpose of the arrangement is that the section size of the first section close to the needle tail end is relatively large in taper degree, so that the waist-hemp needle is suitable for guiding the waist-hemp needle to extend out of the needle tail end along the direction of the needle body, the shaking of the waist-hemp needle in the circumferential direction of the cavity can be relatively quickly limited, and the needle inserting time is reduced; the second section far away from the tail end of the needle has a relatively smaller taper degree, so that a relatively open opening is formed, and medical staff can accurately and quickly extend the lumbar anesthesia needle into the cavity of the auxiliary needle handle.

As shown in fig. 2, the outer wall of the handle 200 has a bump structure, the handle 200 has a cavity 210 for guiding the lumbar anesthesia needle, the small end of the cavity 210 communicates with the needle tail 120, and the large end of the cavity 210 is wide.

According to a preferred embodiment, fig. 1 shows two views of the present puncture auxiliary needle from two views, wherein the left view is a side view, the right view is a front view, a spatial coordinate system is defined for convenience of description, the side view is a view of a plane composed of a y-axis and a z-axis, and the front view is a view of a plane composed of an x-axis and a z-axis. The z-axis direction is defined as a third direction, which is the axial direction of the needle body 100. The x-axis direction is defined as the first direction. The y-axis direction is defined as the second direction. The opening slope of the needle tip can be observed from a direction perpendicular to a plane formed by the first direction and the third direction. The needle tip opening side can be observed from a direction perpendicular to a plane formed by the second direction and the third direction. The handle 200 has two sets of symmetrical surfaces in the circumferential direction, namely a first surface and a fourth surface which are spaced along the second direction, wherein the first surface and the fourth surface are parallel to each other and are parallel to a plane formed by the first direction and the third direction; the second face and the third face are parallel to each other and parallel to a plane formed by the second direction and the third direction. The first and fourth sides of the handle 200 are flat planar structures, and the second and third sides of the handle 200 are convex bump structures that are spaced apart. The plurality of bump structures are configured to protrude outward to a greater extent near both ends of the handle 200 than the middle portion. The bump structure on the handle is favorable for medical staff to identify the inclined plane direction of the auxiliary needle, when the auxiliary needle is punctured, the inclined plane of the needle tip needs to be controlled to puncture inwards in a mode of determining the direction (such as back to the skin of a patient), and the device is configured in a mode that different surfaces correspond to different structures, so that the medical staff can conveniently and rapidly determine the direction of the inclined plane of the needle tip. The handle is designed to be protruded at two sides, and the structure with lower relative protruding degree in the middle is helpful for medical staff to pinch the handle by fingers, so that a valley-shaped structure for pinching the fingers to exert force is formed, the structure is more fit with the shape of the fingers, and the operation is convenient.

According to a preferred embodiment, the number of bump structures on the outer wall of the handle 200 may be 2, 3, 4, etc. The bump structure on the handle 200 helps to increase friction between the hand and the handle 200, so that the medical staff can hold the auxiliary needle more firmly, and medical accidents caused by the fact that the auxiliary needle slides off the hand due to improper use of force of the medical staff (especially for medical staff with insufficient experience) are avoided.

According to a preferred embodiment, the handle 200 has a lumen 210 for guiding a lumbar anesthesia needle, the small end of the lumen 210 being in communication with the needle end 120, the large end of the lumen being wide for introducing a lumbar anesthesia needle for lumbar anesthesia puncture. In the puncture process, the lumbar anesthesia needle enters the handle through the large end of the cavity, the cavity is provided with a tapered cross section size in the extending direction of the needle tail end towards the needle tip, so that the radial movable range of the lumbar anesthesia needle is large when the lumbar anesthesia needle just stretches into the handle, the radial movable range of the lumbar anesthesia needle gradually decreases as the lumbar anesthesia needle continues to go deep through the needle tail end communicated with the small end of the cavity, the auxiliary needle body is more conveniently and rapidly penetrated into a patient by the lumbar anesthesia needle along the needle body of the auxiliary needle by auxiliary medical staff, and especially, the operation skill of the lumbar anesthesia puncture technology is rapidly mastered by medical staff with insufficient experience.

According to a preferred embodiment, the handle is made of medical grade plastic.

According to a preferred embodiment, the medical grade plastic is typically a high strength, high durability and chemical resistance material such as polycarbonate (polycarbonate), polypropylene (polypropylene) or the like.

According to a preferred embodiment, the handle is manufactured by the following process: the method is characterized in that a corrosion-resistant and antibacterial material is generally adopted, rust is not easy to generate or the handle is polluted from the outside in the using process, a mould meeting the requirements is designed according to the shape and the size of the handle, the selected material is heated and melted and then is injected into the handle mould for pressure injection, the surface of the handle is cooled for a period of time, polishing, electroplating and other processes are carried out, the handle is provided with a smooth surface, the handle accessory is installed and operated by automatic equipment or manual work, the handle is qualified through fixing components and secondary combined components, and the handle is cleaned and disinfected after manufacturing is finished, so that the handle is in a sterile state.

According to a preferred embodiment, the length of the auxiliary needle is configured to be the first length. Preferably, the length of the needle body of the auxiliary needle is 30-50mm, and the length of the needle body can be adaptively adjusted in the practical application process.

According to a preferred embodiment, the needle body is provided with graduations, which are arranged at equal intervals in the direction from the needle tip to the needle tail. Preferably, graduations are provided every 10mm in the direction from the needle tip to the needle tail. Wherein, the central positions of the adjacent graduations are separated by 10mm, and the tip of the needle tip is separated from the central position of the adjacent graduations by 10mm because the needle tip is an inclined plane. In particular, graduations can be arranged at intervals of 5mm along the direction from the needle tip to the needle tail end, and the graduation interval can be determined according to actual conditions so as to meet different application scenes and requirements. Preferably, the scale marks are 1 to a plurality of circular rings circumferentially arranged on the needle body of the auxiliary needle. Preferably, the ring has a first width. Basically, the first width is 1-2mm, preferably the first width is 1mm. Preferably, the annular space at the same scale position is 1mm. In particular, the ring width and the ring pitch may each be set to 0.5mm, or the ring width is set to 0.5mm, the ring pitch is set to 1mm, or the ring width is set to 1mm, and the ring pitch is set to 0.5mm, without being particularly limited thereto. The ring width and ring spacing may be practical. Further, the number of the circular rings of the plurality of scales arranged at intervals along the needle tip to the needle tail is configured in an incremental manner. Specifically, taking the example of setting scales at intervals of 10mm along the direction from the needle tip to the needle tail end, the position 10mm away from the needle tip is the 1 st scale, 1 circular ring is arranged, the position 20mm away from the needle tip is the 2 nd scale, 2 circular rings are arranged, the position 30mm away from the needle tip is the 3 rd scale, 3 circular rings are arranged, the position 40mm away from the needle tip is the 4 th scale, and 4 circular rings are arranged. The needle is arranged at equal intervals along the direction from the needle tip to the needle tail, and the circular ring graduations with the increasing number of the circular rings are simple and clear, so that medical staff can be assisted in knowing the depth of the lumbar anesthesia needle penetrating into a patient, medical accidents caused by too deep penetration or too shallow penetration are avoided, and meanwhile, the medical staff can reduce the puncture time due to the graduations, and the puncture process is accelerated. Compared with the traditional scale marks, the novel minimally invasive anesthesia puncture auxiliary needle provided by the utility model has the advantage that the scale marks are simpler.

According to a preferred embodiment, the graduations may be marked by a process such as jet printing or laser engraving. Specifically, when in spray printing, the surface of the needle body is ensured to be smooth and clean, no impurities such as greasy dirt or dust are generated, scale marks and numbers/letters are drawn in Computer Aided Design (CAD) software according to the requirement, a designed scale pattern film is combined on a grid template by a photosensitive coating, a scale template is manufactured by laser punching or chemical dissolution technology, and ink is sprayed on the surface of the needle body in the form of a high-pressure nozzle on the manufactured template so as to realize the printing of scales. Further, the inks used are UV curable inks and thermally curable inks. Specifically, when laser engraving is utilized, a layer of high-temperature-resistant, corrosion-resistant and wear-resistant material is coated on the needle body of the auxiliary needle, and the required scale size and shape are achieved through local oxidation or ablation under the action of a laser beam.

According to a preferred embodiment, the auxiliary needle is a needle body having an inner diameter of 0.4-0.6mm, an outer diameter of 0.6-0.8mm and a length of 30-50mm, the needle tip being provided in a bevel shape. According to a preferred embodiment, the length of the needle body of the auxiliary needle is 30-50mm, and in the practical application process, the length of the needle body can be adaptively adjusted to meet different application scenes and application requirements. The presently available fine lumbar anesthesia needles are 25G, 26G and 27G. Wherein, the inner diameter of the 25G lumbar anesthesia needle is 0.5mm, the outer diameter is 0.7mm, and the length is 90mm; the inner diameter of the 26G lumbar anesthesia needle is 0.4mm, the outer diameter is 0.6mm, and the length is 90mm; the 27G lumbar anesthesia needle has an inner diameter of 0.4mm, an outer diameter of 0.5mm and a length of 80mm. Preferably, the novel minimally invasive anesthesia puncture auxiliary needle provided by the utility model is suitable for assisting the fine lumbar anesthesia needle to puncture based on the size of the fine lumbar anesthesia needles (25G, 26G and 27G) and the hardness requirement of the auxiliary needle. The needle tip is provided with the inclined plane, so that when the needle is punctured, the inclined plane of the needle tip can reduce the resistance when the needle head is contacted with tissues, and the puncture is smoother and easier; on the other hand, tissues can be cut more precisely than tearing or squeezing them, thereby reducing tissue damage and side effects. Under the condition that the disposable puncture is unsuccessful and the secondary puncture by means of the epidural needle is needed, medical staff needs to consider various factors to select the epidural needle, including factors such as age, weight and height of a patient, and factors such as medical history and operation position of the patient. The novel minimally invasive anesthesia puncture auxiliary needle provided by the utility model avoids the selection of medical staff on the epidural needle, particularly avoids the increase of puncture difficulty and the increase of probability of penetration headache after the dura mater is punctured by the patient when the epidural needle is too thick, and simultaneously avoids the problems of waist tingling needle deflection, bending, even breakage and the like possibly caused by the fact that only the waist tingling needle is used for puncture operation in the puncture process.

According to a preferred embodiment, the auxiliary needle is manufactured by the following steps: stainless steel with high hardness and corrosion resistance is generally selected as a material, stainless steel raw materials are subjected to necessary surface treatment, such as cold drawing forming after operations of rust removal, sand paper polishing and the like, stainless steel pipes with different diameters are formed according to different requirements, the drawn pipes are uniform in texture, high in toughness and high in strength, meanwhile, the surface smoothness can be guaranteed, the stainless steel pipes are subjected to cutting and polishing treatment, so that the surface smoothness of the stainless steel pipes is further improved, potential risks caused by surface unevenness are reduced, and finally the stainless steel pipes are cleaned and disinfected, so that safe use is guaranteed.

According to a preferred embodiment, when the puncture operation is performed, the auxiliary needle provided by the utility model is used for penetrating the skin and muscle of a patient to a certain depth, and then the lumbar anesthesia needle is penetrated into the needle body from the cavity of the auxiliary needle handle and penetrates out of the needle tip for the lumbar anesthesia puncture operation. Specifically, the insertion depth of the auxiliary needle is between the skin and the dura mater, about 30-50mm. Specifically, during actual operation, medical personnel need to determine the insertion depth in combination with the patient's actual condition. Under the instruction of the needle body scale of the auxiliary needle, medical staff can know the insertion depth of the auxiliary needle more conveniently and rapidly, after the proper depth is reached, the lumbar anesthesia needle is penetrated into the needle body from the cavity of the auxiliary needle handle, the continuous penetration depth of the lumbar anesthesia needle is judged according to experience and the scale on the needle body, the penetration time is saved, the probability of success of disposable puncture of the medical staff is improved, a more convenient and rapid anesthesia mode is provided for the medical staff, and especially the operation skill of lumbar anesthesia puncture technology is helped to be mastered by the medical staff with insufficient experience rapidly, meanwhile, the possibility of various medical accidents and complications of patients is also reduced, and the popularization and the application in clinic are helped.

It should be noted that the above-described embodiments are exemplary, and that a person skilled in the art, in light of the present disclosure, may devise various solutions that fall within the scope of the present disclosure and fall within the scope of the present disclosure. It should be understood by those skilled in the art that the present description and drawings are illustrative and not limiting to the claims. The scope of the utility model is defined by the claims and their equivalents.

Claims (10)

1. A novel minimally invasive anesthesia puncture auxiliary needle is used for puncture guidance of a lumbar anesthesia needle and is characterized by comprising

A needle body (100) for accommodating the lumbar anesthesia needle, having a needle tip (110) having a bevel shape and a needle tail end (120) for coupling to a handle (200),

wherein,

the handle (200) has a cavity (210) for guiding the lumbar anesthesia needle, and the cavity (210) is configured to have a tapered cross-sectional dimension in an extension direction of the needle tail (120) towards the needle tip (110), the needle tail (120) coupled to the handle (200) being in communication with the cavity (210).

2. The novel minimally invasive anesthesia puncture assistance needle according to claim 1, characterized in that the degree of cross-sectional dimension taper of the first section of the lumen (210) of the handle (200) near the needle trailing end (120) is configured to be greater than the degree of cross-sectional dimension taper of the second section distal to the needle trailing end (120).

3. The novel minimally invasive anesthesia puncture assisting needle according to claim 1, wherein the first face and the fourth face of the handle (200) are flat planar structures, the second face and the third face of the handle (200) are convex bump structures protruding at intervals, the first face and the fourth face are end faces of the handle (200) parallel to a main face of the needle tip (110) with an inclined face, and the third face and the second face are end faces of the handle (200) parallel to a side face of the needle tip (110) without an inclined face.

4. A novel minimally invasive anesthesia puncture assistance needle according to claim 3, wherein a plurality of the bump structures are configured such that the protruding degree is greater toward the outside than the protruding degree of the middle portion near both ends of the handle (200).

5. The novel minimally invasive anesthesia puncture auxiliary needle according to claim 1, wherein the needle body (100) is provided with graduations at equal intervals along the direction from the needle tip (110) to the needle tail (120).

6. The novel minimally invasive anesthesia puncture assisting needle according to claim 5, wherein the scale is 1 to a plurality of circular rings circumferentially arranged on the needle body (100).

7. The novel minimally invasive anesthesia puncture assistance needle of claim 6 wherein the number of rings of the plurality of graduations spaced along the needle tip (110) to the needle tail (120) is incrementally configured.

8. The novel minimally invasive anesthesia puncture needle of claim 6 wherein the annular ring has a first width.

9. The novel minimally invasive anesthesia puncture assisting needle according to claim 5, characterized in that the needle body (100) is provided with graduations every 10mm along the direction from the needle tip (110) to the needle tail (120).

10. The novel minimally invasive anesthesia puncture auxiliary needle according to claim 1, characterized in that the needle body (100) has an inner diameter of 0.4-0.6mm and an outer diameter of 0.6-0.8mm.