阅读说明：本技术 穿刺针 (Puncture needle ) 是由 代长娟 于 2021-10-12 设计创作，主要内容包括：本申请涉及一种穿刺针,包括针管和针柄,针柄包括针管接头、操作柄和针型标识环,针管接头的近端端面凸设一环形储胶圈并在储胶圈上开设贯通内外周面的注胶口,在储胶圈内形成定位台阶,操作柄的远端端面凸设一直径小于储胶圈内径且与储胶圈同心设置的接合柱,接合柱的远端端面形成定位面,接合柱与定位台阶之间还设有在接合柱插入储胶圈内时确保二者同心对插并防止二者转动的限位结构,接合柱与储胶圈同心对插至定位面与定位台阶相抵后将胶水从注胶口注入接合柱和储胶圈之间的储胶空间内将针管接头的近端和操作柄的远端粘胶固定；针型标识环环设于储胶圈的外周以遮住注胶口。该穿刺针粘胶定位准确、外形美观并能标识针型及防止带入塑料碎屑。(The application relates to a puncture needle, which comprises a needle tube and a needle handle, wherein the needle handle comprises a needle tube joint, an operating handle and a needle type identification ring, an annular rubber storage ring is convexly arranged on the proximal end face of the needle tube joint, a glue injection hole penetrating through the inner peripheral surface and the outer peripheral surface is formed in the rubber storage ring, a positioning step is formed in the rubber storage ring, a joint column which has a diameter smaller than the inner diameter of the rubber storage ring and is concentrically arranged with the rubber storage ring is convexly arranged on the distal end face of the operating handle, a positioning surface is formed on the distal end face of the joint column, a limiting structure which ensures that the joint column and the rubber storage ring are concentrically inserted and prevents the joint column and the rubber storage ring from rotating when the joint column is inserted into the rubber storage ring is further arranged between the joint column and the positioning step, and glue is injected into a glue storage space between the joint column and the rubber storage ring from the glue injection hole after the joint column and the positioning step are concentrically inserted into the positioning surface and abut against the positioning step, so that the proximal end of the needle tube joint and the distal end of the operating handle are fixed; the periphery that stores up the rubber ring is located to needle type sign ring in order to cover the injecting glue mouth. The puncture needle is accurate in positioning and attractive in appearance, can mark needle shapes and prevent plastic debris from being brought in.)

1. A puncture needle comprises a needle tube and a needle handle, wherein the far end of the needle tube is provided with a needle point, the near end of the needle tube is fixedly connected with the needle handle, and the puncture needle is characterized in that the needle handle comprises a needle tube connector, an operating handle and a needle type identification ring, an annular glue storage ring is convexly arranged on the near end face of the needle tube connector, a glue injection port penetrating through the inner peripheral face and the outer peripheral face is formed in the glue storage ring, a positioning step is formed in the glue storage ring, a joint column which is smaller than the inner diameter of the glue storage ring in diameter and is concentrically arranged with the glue storage ring is convexly arranged on the far end face of the operating handle, a positioning face is formed on the far end face of the joint column, a limiting structure which ensures that the joint column and the glue storage ring are concentrically inserted into the glue injection ring and prevents the joint column and the glue injection column from rotating when the joint column and the glue storage ring are inserted into the glue injection space formed between the outer peripheral face of the joint column and the inner peripheral face of the glue storage ring after the positioning step and the glue injection column are abutted against the positioning step The near end of the head is fixed with the far end of the operating handle by glue; the needle type identification ring is annularly arranged on the periphery of the rubber storage ring to cover the rubber injection port.

2. The needle of claim 1 wherein the retention structure comprises a cooperating projection and detent or a cooperating post and detent.

3. The needle of claim 2 wherein the rubber reservoir has at least one detent projection projecting radially inwardly from the detent step, the engagement post has a periphery defining at least one detent groove extending proximally from the detent surface corresponding to the at least one detent projection, and the detent projection is received in the detent groove when the engagement post is inserted into the rubber reservoir such that the detent surface abuts the detent step.

4. The needle of claim 2 wherein the locating projection is located opposite the gate and a vent channel is formed between the locating projection and the locating channel.

5. The needle of claim 1 wherein the distal end of the handle further includes a cover ring concentrically surrounding the post, the post being insertable into the gel reservoir while the proximal end of the gel reservoir is insertable into the space between the post and the cover ring.

6. The needle of claim 5 wherein said needle identification ring is mounted in an annular recess formed between a proximal end surface of said needle hub and a distal end surface of said shroud.

7. The needle of claim 6 wherein said needle identification ring is made of an elastomeric material and is resiliently snap-fitted into said annular groove.

8. The puncture needle according to claim 1, wherein the distal end outer periphery of the operating handle is further provided with a needle tip indicator facing the direction of the slope of the needle tip.

9. The puncture needle according to claim 1, wherein the operating handle is further provided with a non-slip strip and a limiting lug.

10. A puncture needle according to claim 1, wherein a graduated scale is provided on the outer periphery of the needle tube.

Technical Field

The present application relates to surgical instruments and, more particularly, to a needle for puncturing under X-ray or ultrasound image guidance.

Background

The needle handle assembly of the puncture needle on the market at present has various connection modes, and is mainly in an integrated injection molding or gluing mode, wherein the gluing mode inevitably has the defects of assembly positioning deflection, glue overflow, glue deficiency, air bubbles and the like in the gluing mode. Meanwhile, in order to rapidly identify the nominal outer diameter (needle type) of the puncture needle by eyesight, a plastic color ring 3 representing the needle type is directly sleeved on the puncture needle 1 to indicate the specification of the puncture needle 1, as shown in fig. 1. When the needle color wheel 3 is mounted, the tip of the puncture needle 1 is inserted from the plastic needle color wheel 3 and pushed into the needle protection sleeve 2, during which the tip runs the risk of getting caught on the needle color wheel 3 and getting plastic debris. The plastic debris can cause thrombosis in the body of the patient, resulting in medical accidents.

Disclosure of Invention

The technical problem that this application will solve lies in, to the above-mentioned defect of prior art, provides a viscose location accuracy, the appearance is pleasing to the eye and can effectively sign the needle type and prevent that the needle point from bringing into the pjncture needle of plastics piece risk.

The technical scheme adopted by the application for solving the technical problem is as follows: the puncture needle comprises a needle tube and a needle handle, wherein the far end of the needle tube is provided with a needle point, the near end of the needle tube is fixedly connected with the needle handle, the needle handle comprises a needle tube connector, an operating handle and a needle type identification ring, an annular glue storage ring is convexly arranged on the near end face of the needle tube connector, a glue injection port penetrating through the inner peripheral face and the outer peripheral face is formed in the glue storage ring, a positioning step is formed in the glue storage ring, a joint column which is smaller in diameter than the inner diameter of the glue storage ring and is concentrically arranged with the glue storage ring is convexly arranged on the far end face of the operating handle, a positioning face is formed on the far end face of the joint column, a limiting structure which ensures that the joint column and the glue storage ring are concentrically inserted in the glue storage ring and prevents the joint column and the glue injection column from rotating when the joint column is inserted into the glue storage ring is further arranged between the joint column and the positioning step, glue injection column and the glue injection port is injected into a glue storage space formed between the outer peripheral face of the joint column and the inner peripheral face of the glue storage ring from the glue injection port The end is fixed with the far end of the operating handle by glue; the needle type identification ring is annularly arranged on the periphery of the rubber storage ring to cover the rubber injection port.

In one embodiment of the puncture needle according to the present application, the position limiting structure includes a positioning protrusion and a positioning groove or a positioning column and a positioning hole.

In one embodiment of the puncture needle according to the present application, at least one positioning protrusion is protruded from the positioning step radially inward in the rubber storage ring, at least one positioning groove extending from the positioning surface to the proximal end is formed in the outer periphery of the engagement post corresponding to the at least one positioning protrusion, and when the engagement post is inserted into the rubber storage ring so that the positioning surface abuts against the positioning step, the positioning protrusion is inserted into the corresponding positioning groove.

In one embodiment of the puncture needle according to the application, the positioning bump is located on the opposite side of the glue injection port, and an exhaust groove is formed between the positioning bump and the positioning groove.

In one embodiment of the needle according to the present application, the distal end of the handle further includes a cap ring concentrically surrounding the engagement post, and the engagement post is inserted into the rubber reservoir while the proximal end of the rubber reservoir is inserted into the space between the engagement post and the cap ring.

In one embodiment of the needle according to the application, the needle identification ring is mounted in an annular recess formed between a proximal end face of the needle hub and a distal end face of the shield ring.

In one embodiment of the puncture needle according to the present application, the needle type identification ring is made of an elastic material and is elastically clamped in the annular groove.

In one embodiment of the puncture needle according to the application, the outer periphery of the distal end of the operating handle is further provided with a needle tip indicating mark facing the direction of the inclined surface of the needle tip.

In one embodiment of the puncture needle according to the application, the operating handle is further provided with an anti-slip strip and a limiting lug.

In one embodiment of the needle according to the application, the needle cannula is marked with a graduated scale on its outer circumference.

The puncture needle has the following beneficial effects: according to the needle handle of pjncture needle of this application embodiment form and establish needle type sign ring at the junction ring by needle tubing joint and handle viscose fixed connection, the near-end of needle tubing joint and the distal end of handle form through storing up the concentric interpolation of rubber ring and joint post and store up the viscose that the glue space realized the fastening and connect, the needle type sign ring of storing up the rubber ring periphery is located to the ring not only can the quick needle type of discernment pjncture needle, can also cover injecting glue mouth or viscose defect, beautifies the product. The puncture needle according to the embodiment of the application has the advantages of simple structure and convenience in operation, and does not generate the risk of bringing plastic scraps.

Drawings

The present application will be further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic illustration of a prior art lancet;

FIG. 2 is a schematic illustration of the structure of a needle of one embodiment of the present application;

FIG. 3 is an exploded view of the needle of FIG. 2;

FIG. 4 is a schematic view of the needle hub of the needle of FIG. 2;

FIG. 5 is a partial schematic view of the handle of the needle of FIG. 2;

FIG. 6 is a schematic view of the assembled configuration of the needle of FIG. 2;

fig. 7 is a sectional view showing the assembled structure of the puncture needle shown in fig. 2.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application. Also, the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

Figures 2 and 3 show an overall and exploded view, respectively, of a needle 10 according to one embodiment of the present application. As shown in fig. 2 and 3, the puncture needle 10 is mainly composed of a needle tube 11 and a needle shaft 12. The needle tube 11 is made of metal, preferably stainless steel. The distal end of needle cannula 11 is provided with needle tip 111, the angle of needle tip 111 to the horizontal plane preferably being less than 45 °. The needle tube 11 is marked with a graduated scale 112 on the periphery, the graduated scale 112 can be divided at intervals of 0.5-1 cm, and 5cm times of graduated lines are obviously different from other graduated lines, so that the puncture depth can be conveniently observed during puncture positioning. In particular, the graduated scale 112 may be affixed to the needle tube 11 by laser marking, ink, coating, or the like. The proximal end of the needle tube 11 is fixedly connected with the needle handle 12. The needle handle 12 is further comprised of a needle hub 121, an operating handle 122, and a needle identification ring 123. The distal end of the needle tube joint 121 is fixedly connected with the proximal end of the needle tube 11, the proximal end of the needle tube joint 121 is fixedly connected with the distal end of the operating handle 122, and a needle-shaped identification ring 123 is annularly arranged at the joint of the two. The needle identification ring 123 is preferably made of an elastomeric material that resiliently snaps into an annular recess 1216 (shown in FIG. 6) formed in the outer periphery of the junction of the proximal end of the needle hub 121 and the distal end of the lever 122. According to various embodiments of the present disclosure, the needle-shaped identification ring 123 may be formed by injection molding of plastic material and then fitted to the joint between the needle hub 121 and the operation handle 122, or by multi-material injection molding with the needle hub 121 and/or the operation handle 122. The needle type identification ring 123 can have different colors, each of which represents the nominal outer diameter (needle type) of the needle tube 11 of the puncture needle 10, and not only can the needle type of the puncture needle 10 be quickly identified through the color, but also the joint of the needle tube connector 121 and the operating handle 122 can be covered, and the product is beautiful. The operating handle 122 is further provided with an anti-slip strip 124 and a limiting lug 125, the anti-slip strip 124 plays an anti-slip role when used by an operator, and the limiting lug 125 is used for standardizing the holding position of the operator.

As shown in fig. 4-7, the distal end of the needle hub 121 is provided with a cylindrical section 1211 for receiving the needle cannula 11. The proximal end of the needle hub 121 is fixedly attached to the distal end of the handle 122 by gluing and forms an annular groove 1216 around the circumference of the joint for mounting the needle identification ring 123. Referring to fig. 4, an annular rubber storage ring 1212 is protruded from a proximal end surface of the needle tube connector 121, and a rubber injection port 1213 penetrating through an outer circumferential surface 1212a and an inner circumferential surface 1212b of the rubber storage ring 1212 is further formed in the rubber storage ring 1212. The proximal end of the needle hub 121 further forms a positioning step 1214 in the rubber ring 1212, and a positioning protrusion 1215 is protruded radially inward from the positioning step 1214, and the positioning protrusion 1215 may be located right opposite to the rubber injection hole 1213. Correspondingly, as shown in fig. 5, an engaging column 1223 is protruded from the distal end surface of the operating handle 122, and the diameter of the engaging column 1223 is smaller than the inner diameter of the rubber storage ring 1212 on the needle hub 121. The mating posts 1223 are inserted concentrically with the rubber ring 1212, so that a rubber space 1226 (see fig. 7) is formed between the outer circumferential surface 1223a of the mating posts 1223 and the inner circumferential surface 1212b of the rubber ring 1212. The distal end surface of the engagement post 1223 forms a positioning surface 1224 that abuts a positioning step 1214 in the rubber storage ring 1212. The periphery of the mating post 1223 further defines a positioning groove 1225 extending from the positioning surface 1224 to the proximal end corresponding to the positioning protrusion 1215 in the rubber storage ring 1212, and when the mating post 1223 is inserted into the rubber storage ring 1212 so that the positioning surface 1224 abuts against the positioning step 1214, the positioning protrusion 1215 is inserted into the positioning groove 1225 to ensure that the mating post 1223 and the rubber storage ring 1212 are concentrically inserted and the rotation between the two is limited. Meanwhile, a venting groove 1227 is also formed between the positioning projection 1215 and the positioning groove 1225. According to various embodiments of the present disclosure, the positioning protrusions and the positioning grooves can be interchanged to achieve a position-limiting fit, so as to ensure that the engagement posts 1223 and the rubber ring 1212 are inserted concentrically and are restricted from rotating. Other suitable limiting structures may be disposed between the engagement post 1223 and the positioning step 1214 to ensure that the engagement post and the rubber ring are concentrically inserted and prevent the engagement post and the rubber ring from rotating, such as a positioning post and a positioning hole, which are engaged with each other. As further shown in fig. 5, the distal end of the handle 122 is concentrically surrounded by a cap 1222 outside the engagement post 1223 so that the engagement post 1223 is inserted into the rubber storage ring 1212 while the proximal end of the rubber storage ring 1212 is inserted into the space between the engagement post 1223 and the cap 1222 to improve the aesthetics of the engagement between the needle hub 121 and the handle 122 while ensuring the concentric connection between the needle hub 121 and the handle 122. At the same time, an annular recess 1216 is formed between the proximal end surface of the needle hub 121 and the distal end surface of the shield 1222 for receiving the needle type identification ring 123. Referring further to fig. 5 and 2, the distal end of the operating handle 123 is further provided with a needle tip indicator 1221 on the outer circumference thereof for indicating the direction of the bevel of the needle tip 111 of the needle tube 11, i.e. after the needle tube joint 121 is connected to the operating handle 122, the bevel of the needle tip 111 of the needle tube 11 mounted on the needle tube joint 121 is directed toward the needle tip indicator 1221. In the preferred embodiment, the glue injection opening 1213 is also opposite to the needle point indication mark 1221, which facilitates assembly and connection.

Referring further to fig. 6 and 7, when the proximal end of the needle tube connector 121 is connected to the distal end of the operating handle 122, the engaging post 1223 at the distal end of the operating handle 122 is first inserted into the rubber storage ring 1212 at the proximal end of the needle tube connector 121, the positioning protrusion 1215 is inserted into the positioning slot 1225, and the positioning surface 1224 of the engaging post 1223 abuts against the positioning step 1214 in the rubber storage ring 1212, so that a rubber storage space 1226 is formed between the outer circumferential surface 1223a of the engaging post 1223 and the inner circumferential surface 1212b of the rubber storage ring 1212. Then, glue is injected into the glue storage space 1226 from the glue injection port 1213 on the glue storage ring 1212, so that the proximal end of the needle tube connector 121 and the distal end of the operating handle 122 can be glued and fixed, and the air discharge slot 1227 formed between the positioning projection 1215 and the positioning slot 1225 is located at the opposite side of the glue injection port 1213, so that the glue can be discharged after flowing, and the gluing is more secure. The needle type identification ring 123 is fitted into an annular groove 1216 formed in the outer periphery of the rubber storage ring 1212 after the needle hub 121 and the operation handle 122 are glued together. The needle type identification ring 123 is preferably made of an elastic material, the inner diameter of the needle type identification ring can be smaller than the outer diameter of the bottom surface of the annular groove 1216, the needle type identification ring is elastically installed in the annular groove 1216 through the material, the needle type of the puncture needle 10 can be rapidly identified through colors, and meanwhile, the glue injection port 1213 or the glue defect can be covered, so that the product is attractive.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.