A syringe needle assembly and a needle tube reversing method

Abstract

The present application discloses an injection needle device to solve the problem that the injection needle cannot be reused after piercing the blood vessel, comprising a needle cover, a feeding pipeline, an injection pipeline and a detection pipeline; a reversing mechanism, which can make the lower end of the feeding pipeline respectively communicate with the upper end of the injection pipeline and the lower end of the detection pipeline; an injection needle tube, which is arranged in the needle cover and communicates with the injection pipeline; and a detection needle tube, which is arranged in the injection needle tube and communicates with the detection pipeline.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of medical equipment, in particular to an injection needle assembly and a needle tube pipeline reversing method. BACKGROUND

[0002] With the increase of dermal filler use, many complications have been reported; the most serious of which is intravascular injection, which can lead to skin necrosis, blindness or stroke. During the process of collecting blood samples from veins, our needle tip penetrates the blood vessel wall and lumen. There is natural blood pressure in the veins and arteries of the human body. When the needle tip is inside the blood vessel lumen, blood will flow into the inner cavity of the needle and fill the chamber due to the blood pressure difference between the chamber and the blood vessel. Therefore, the blood in the chamber can be observed and it is known whether the needle tip is inside the blood vessel lumen.

[0003] The existing needle tube is generally provided with two completely unconnected channels of injection needle and detection needle, the injection needle is connected with the syringe, and the detection needle is connected with the detection device, the structure is relatively complex, and when the blood flows into the inner cavity of the needle, it needs to be pulled out to avoid dermal filler injection into the blood vessel, but the detection needle is already filled with blood samples, and the needle tube needs to be replaced for re-injection, otherwise it is easy to affect the next detection, and cannot be reused. SUMMARY

[0004] The present application provides an injection needle assembly, which aims to at least solve one of the technical problems existing in the prior art.

[0005] The technical scheme of the present application is an injection needle assembly, which comprises:

[0006] A needle sleeve is provided with a feeding pipeline, an injection pipeline and a detection pipeline;

[0007] A reversing mechanism can make the lower end of the feeding pipeline respectively communicate with the upper end of the injection pipeline and the lower end of the detection pipeline;

[0008] An injection needle tube is provided in the needle sleeve, and the injection needle tube communicates with the injection pipeline;

[0009] A detection needle tube is provided in the injection needle tube, and the detection needle tube communicates with the detection pipeline.

[0010] The technical scheme of the present application is a needle tube pipeline reversing method, applied to an injection needle assembly, comprising:

[0011] S1, insert the injection needle assembly, and make the feeding pipeline communicate with the detection pipeline through the reversing mechanism;

[0012] S2, if there is liquid backflow, jump to S3; if there is no liquid backflow, jump to S4;

[0013] S3, pull out the injection needle assembly, install the syringe through the adapter, inject the cleaning liquid into the needle tube to clean the needle tube, and re-operate S1;

[0014] S4, drive the reversing mechanism to connect the feeding pipeline with the detection pipeline, and install the syringe through the adapter to inject the medicine.

[0015] Further, in the reversing mechanism described in steps S1 and S4, the reversing mechanism comprises a valve body, a rotating block and a rotating shaft, the valve body is arranged in the needle sleeve, the valve body is provided with a first port, a second port and a third port, the first port, the second port and the third port all communicate with the inner cavity of the valve body, the first port communicates with the lower end of the feeding pipeline, the second port communicates with the injection pipeline, and the third port communicates with the detection pipeline, the rotating block is arranged in the inner cavity of the valve body, the rotating shaft is rotatably arranged in the valve body, the rotating shaft can drive the rotating block to block the second port, the first port can communicate with the third port, and the rotating shaft can drive the rotating block to block the third port, and the first port can communicate with the second port.

[0016] Further, the reversing mechanism further comprises a rotating handle, the rotating handle is arranged on the rotating shaft and outside the needle sleeve, and the rotating handle is used to drive the rotating shaft to rotate.

[0017] Further, the rotating handle is a cam structure, and whether the handle is rotated to the position is judged by the protruding part of the rotating handle.

[0018] Further, the reversing mechanism further comprises a locking piece, and the locking piece is used to relatively fix the rotating shaft and the valve body.

[0019] Further, the rotating handle is provided with a first locking hole, the needle sleeve is provided with a second locking hole, and the locking piece can be inserted into the first locking hole and the second locking hole.

[0020] Further, the outer wall of the needle sleeve is provided with an arc-shaped protruding structure, the arc-shaped protruding structure is arranged outside the detection pipeline, and the arc-shaped protruding structure enlarges the inside of the detection pipeline.

[0021] Further, the surface of the rotating block is provided with a sealing layer.

[0022] Further, the injection needle tube is a bottom sharp opening or a side opening.

[0023] The beneficial effects of the present application are as follows.

[0024] 1. In the detection, the feed pipe, the detection pipe, the detection needle pipe are communicated in turn, when inserted into the blood vessel, due to the blood pressure difference between the chamber and the blood vessel, the blood flows to the detection pipe, which is convenient for the user to judge whether it is inserted into the blood vessel, when the needle tip is inserted into the blood vessel, after taking out the needle pipe, the adapter is connected with the syringe, the physiological saline can be introduced to clean the blood in the injection needle, so that the injection needle can be reused; the needle pipe is completely inserted and not inserted into the blood vessel, through the reversing mechanism, the feed pipe, the injection pipe and the injection needle pipe are communicated in turn, the syringe is installed, and the injection needle can inject the solution. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is the overall structure schematic diagram of the injection needle device of the embodiment of the utility model;

[0026] Figure 2 is the cross section structure schematic diagram of the detection state of the injection needle device of the embodiment of the utility model;

[0027] Figure 3 is the cross section structure schematic diagram of the injection state of the injection needle device of the embodiment of the utility model;

[0028] Figure 4 is the structure schematic diagram of the injection needle pipe of the embodiment of the utility model, which is a bottom sharp opening or a side opening.

[0029] DRAWINGS

[0030] Needle sleeve 100, feed pipe 110, injection pipe 120, detection pipe 130, arc convex structure 140;

[0031] Reversing mechanism 200, valve body 210, first port 211, second port 212, third port 213, rotating block 220, rotating shaft 230, rotating handle 240, locking piece 250, second locking hole 252;

[0032] Injection needle pipe 300;

[0033] Detection needle pipe 400;

[0034] Adapter 500. DETAILED DESCRIPTION

[0035] The following contents will describe several embodiments of the application, including the embodiments corresponding to the drawings, and it can be understood that the drawings are used to assist understanding the technical features and technical schemes of the application, and should not be understood as the limitation of the protection scope of the application.

[0036] The concept, specific structure and generated technical effects of the present application will be described clearly and completely in combination with embodiments and drawings to fully understand the purposes, schemes and effects of the present application. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0037] It should be noted that, unless otherwise explicitly limited, when a certain feature is referred to as being "fixed", "connected", "installed" on another feature, it can be directly fixed, connected on the other feature, or indirectly fixed, connected on the other feature. The words "fixed", "connected", "installed" and the like should be understood in a broad sense, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0038] It should be noted that the directions or positional relationships described in the present application, such as up, down, left, right, top, bottom, front, back, inside, outside, etc., are based on the directions or positional relationships of the drawings or embodiments, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application.

[0039] It should be noted that the term "and / or" used in the present application includes any combination of one or more related listed items, the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, more than, etc. are not included in the number, above, below, within, etc. are understood to include the number.

[0040] It should be noted that in the present application, if the first, second is described for the purpose of distinguishing technical features, it cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0041] It should be noted that, unless otherwise explicitly limited, all technical and scientific terms used herein have the same meaning as understood by those skilled in the art. The terms used in the specification are only used to describe specific embodiments and are not intended to limit the present application.

[0042] Referring to Figures 1-4 , the first aspect of the present application provides an injection needle assembly, comprising:

[0043] The needle cover 100 is provided with a feeding pipeline 110, an injection pipeline 120 and a detection pipeline 130;

[0044] The reversing mechanism 200 can make the lower end of the feeding pipe 110 communicate with the upper end of the injection pipe 120 and the lower end of the detection pipe 130, respectively.

[0045] The injection needle pipe 300 is arranged in the needle sleeve 100 and communicates with the injection pipe 120.

[0046] The detection needle pipe 400 is arranged in the injection needle pipe 300 and communicates with the detection pipe 130.

[0047] The basic embodiment of the second aspect of the present application provides a needle pipe pipe reversing method applied to an injection needle assembly, which comprises the following steps:

[0048] S1, inserting the injection needle assembly, and making the feeding pipe 110 communicate with the detection pipe 130 through the reversing mechanism 200;

[0049] S2, if there is liquid backflow, jumping to S3; if there is no liquid backflow, jumping to S4;

[0050] S3, pulling out the injection needle assembly, installing the syringe through the adapter 500, injecting the cleaning liquid into the needle pipe to clean the needle pipe, and re-operating S1;

[0051] S4, driving the reversing mechanism 200 to make the feeding pipe 110 communicate with the detection pipe 130, and installing the syringe through the adapter 500 to inject the medicine.

[0052] The basic embodiment of the first aspect of the present application provides an injection needle assembly. In the detection process, the feeding pipe 110, the detection pipe 130 and the detection needle pipe 400 are sequentially communicated. When the injection needle is inserted into the blood vessel, the blood flows into the detection pipe 130 due to the blood pressure difference between the chamber and the blood vessel, so that the user can determine whether the blood vessel is punctured. When the needle tip is inserted into the blood vessel, the needle pipe is removed, the adapter 500 is connected to the syringe, and the physiological saline is injected into the injection needle to clean the blood in the injection needle, so that the injection needle can be reused. When the needle pipe is completely inserted into the blood vessel but not punctured into the blood vessel, the reversing mechanism 200 is used to make the feeding pipe 110, the injection pipe 120 and the injection needle pipe 300 sequentially communicate, and the syringe is installed to enable the injection needle to inject the solution.

[0053] It can be understood that the detection needle is arranged in the injection needle, and the diameter of the injection needle is smaller than that of the detection needle, so that the detection needle can be arranged in the injection needle. The inner cavity of the detection needle is the space between the inner wall of the detection needle and the outer wall of the detection needle, and the inner cavity of the detection needle is the space inside the detection needle.

[0054] It can be understood that the needle sleeve 100 and the reversing mechanism 200 are made of transparent material, which is convenient for the user to observe whether the blood vessel is punctured.

[0055] In some embodiments, in the reversing mechanism 200 of the S1 step, the reversing mechanism 200 comprises a valve body 210, a rotating block 220 and a rotating shaft 230, the valve body 210 is arranged in the needle sleeve 100, the valve body 210 is provided with a first port 211, a second port 212 and a third port 213, the first port 211, the second port 212 and the third port 213 all communicate with the inner cavity of the valve body 210, the first port 211 communicates with the lower end of the feeding pipeline 110, the second port 212 communicates with the injection pipeline 120, and the third port 213 communicates with the detection pipeline 130, the rotating block 220 is arranged in the inner cavity of the valve body 210, the rotating shaft 230 is rotatably arranged in the valve body 210, the rotating shaft 230 can drive the rotating block 220 to block the second port 212, so that the first port 211 can communicate with the third port 213, and the rotating shaft 230 can drive the rotating block 220 to block the third port 213, so that the first port 211 can communicate with the second port 212. Three inlet and outlet ports are arranged on the valve body 210, the rotating block 220 blocks the second port 212 / third port 213, so that the third port 213 / second port 212 communicates with the first port 211, and blood can enter from the detection pipeline during detection, and medicine can enter from the injection pipeline during injection.

[0056] In some embodiments, the reversing mechanism 200 further comprises a rotating handle 240, the rotating handle 240 is arranged on the rotating shaft 230 and outside the needle sleeve 100, and the rotating handle 240 is used to drive the rotating shaft 230 to rotate. By arranging the handle outside, the operator can rotate the rotating shaft outside, which is convenient for operation.

[0057] In some embodiments, the rotating handle 240 is a cam structure, and whether the handle is rotated to the position is judged by the protruding part of the rotating handle 240. The cam-shaped rotating handle 240 is convenient for the operator to rotate, and according to the protruding part of the cam, the operator can judge whether the rotating angle of the flap is in place.

[0058] In some embodiments, the reversing mechanism 200 further comprises a locking member 250, the locking member 250 is used to relatively fix the rotating shaft 230 and the valve body 210. The locking member 250 can prevent the rotating block 220 from rotating, and prevent the rotating handle 240 from being touched during transportation or use, so that the rotating block 220 is rotated and the air tightness is affected.

[0059] In some embodiments, the rotating handle 240 is provided with a first locking hole, the needle sleeve 100 is provided with a second locking hole 252, and the locking member 250 can be inserted into the first locking hole and the second locking hole 252. By inserting the locking member 250 into the first locking hole and the second locking hole 252, the rotating handle 240 and the needle sleeve 100 are relatively fixed, so that the rotating handle 240 is prevented from rotating.

[0060] In some embodiments, the outer wall of the needle sleeve 100 is provided with an arc-shaped convex structure 140, which is arranged outside the detection pipeline 130 and enlarges the inside of the detection pipeline 130. The arc-shaped convex structure is similar to a convex lens structure and has an enlarging effect, which facilitates the user to observe the bleeding condition.

[0061] In some embodiments, the surface of the rotating block 220 is provided with a sealing layer. The sealing layer abuts against the valve body 210 to prevent the detection channel and the injection channel from being communicated.

[0062] Referring to Figure 4 In some embodiments, the injection needle tube 300 is provided with a bottom sharp opening or a side opening.

[0063] It should be noted that the terms such as “one embodiment”, “some embodiments”, “basic embodiment”, “extended embodiment” and the like are used in the present specification to describe several embodiments of the present application, and the specific features, structures, materials or characteristics in the several embodiments can be combined in the case of conforming to the principles and purposes of the present application.

[0064] Although some embodiments of the present application have been shown and described in the present specification, the present application should not be limited to the above-mentioned embodiments, but any changes, modifications, equivalent replacements and equivalent variations of the embodiments within the spirit and principles of the present disclosure, without departing from the principles and purposes of the present application, should be included in the protection scope of the present disclosure, and should be considered to belong to the protection scope of the present application.

Claims

1. An injection needle assembly for avoiding injection of a dermal filler into a blood vessel, characterized in that The utility model relates to a needle sleeve (100) is provided with feed pipe (110), injection pipe (120) and detection pipe (130), reversing mechanism (200) can make the lower end of feed pipe (110) respectively communicate the upper end of injection pipe (120) and detection pipe (130) lower end, reversing mechanism (200) includes valve body (210), rotating block (220) and rotating shaft (230), valve body (210) is located in needle sleeve (100), valve body (210) is provided with first mouth (211), second mouth (212) and third mouth (213), first mouth (211), second mouth (212) and third mouth (213) all communicate the inner chamber of valve body (210), first mouth (211) communicates the lower end of feed pipe (110), second mouth (212) communicates injection pipe (120), third mouth (213) communicates detection pipe (130), rotating block (220) is located in the inner chamber of valve body (210), rotating shaft (230) rotatably is located in valve body (210), rotating shaft (230) can drive rotating block (220) and block second mouth (212), make first mouth (211) can communicate third mouth (213), and rotating shaft (230) can drive rotating block (220) and block third mouth (213), make first mouth (211) can communicate second mouth (212), injection needle tube (300) is located in needle sleeve (100), injection needle tube (300) communicates injection pipe (120), the outer wall of needle sleeve (100) is provided with arc convex structure (140), arc convex structure (140) is located in detection pipe (130) outside, enlarge detection pipe (130) inside through arc convex structure (140), detection needle tube (400) is located in injection needle tube (300), detection needle tube (400) communicates detection pipe (130). The utility model relates to a needle sleeve (100) is provided with feed pipe (110), injection pipe (120) and detection pipe (130), reversing mechanism (200) can make the lower end of feed pipe (110) respectively communicate the upper end of injection pipe (120) and detection pipe (130) lower end, reversing mechanism (200) includes valve body (210), rotating block (220) and rotating shaft (230), valve body (210) is located in needle sleeve (100), valve body (210) is provided with first mouth (211), second mouth (212) and third mouth (213), first mouth (211), second mouth (212) and third mouth (213) all communicate the inner chamber of valve body (210), first mouth (211) communicates the lower end of feed pipe (110), second mouth (212) communicates injection pipe (120), third mouth (213) communicates detection pipe (130), rotating block (220) is located in the inner chamber of valve body (210), rotating shaft (230) rotatably is located in valve body (210), rotating shaft (230) can drive rotating block (220) and block second mouth (212), make first mouth (211) can communicate third mouth (213), and rotating shaft (230) can drive rotating block (220) and block third mouth (213), make first mouth (211) can communicate second mouth (212), injection needle tube (300) is located in needle sleeve (100), injection needle tube (300) communicates injection pipe (120), the outer wall of needle sleeve (100) is provided with arc convex structure (140), arc convex structure (140) is located in detection pipe (130) outside, enlarge detection pipe (130) inside through arc convex structure (140), detection needle tube (400) is located in injection needle tube (300), detection needle tube (400) communicates detection pipe (130). The utility model relates to a needle sleeve (100) is provided with feed pipe (110), injection pipe (120) and detection pipe (130), reversing mechanism (200) can make the lower end of feed pipe (110) respectively communicate the upper end of injection pipe (120) and detection pipe (130) lower end, reversing mechanism (200) includes valve body (210), rotating block (220) and rotating shaft (230), valve body (210) is located in needle sleeve (100), valve body (210) is provided with first mouth (211), second mouth (212) and third mouth (213), first mouth (211), second mouth (212) and third mouth (213) all communicate the inner chamber of valve body (210), first mouth (211) communicates the lower end of feed pipe (110), second mouth (212) communicates injection pipe (120), third mouth (213) communicates detection pipe (130), rotating block (220) is located in the inner chamber of valve body (210), rotating shaft (230) rotatably is located in valve body (210), rotating shaft (230) can drive rotating block (220) and block second mouth (212), make first mouth (211) can communicate third mouth (213), and rotating shaft (230) can drive rotating block (220) and block third mouth (213), make first mouth (211) can communicate second mouth (212), injection needle tube (300) is located in needle sleeve (100), injection needle tube (300) communicates injection pipe (120), the outer wall of needle sleeve (100) is provided with arc convex structure (140), arc convex structure (140) is located in detection pipe (130) outside, enlarge detection pipe (130) inside through arc convex structure (140), detection needle tube (400) is located in injection needle tube (300), detection needle tube (400) communicates detection pipe (130). ​ ​

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