Injection line eccentric valve switching structure

Abstract

The application discloses an injection pipeline eccentric valve switching structure to solve the problem that a needle tube cannot be reused in the medical equipment field, and comprises a joint used for connecting a syringe, a steering valve arranged in the joint, a passage arranged in the steering valve, a lower end of the passage deviating from an axis of the steering valve, an upper end of the passage being communicated with the joint, an outer shell body rotatably arranged in the steering valve, an inner shell body embedded in the outer shell body, an injection needle arranged in the outer shell body, and a detection needle arranged in the inner shell body and arranged in the injection needle, and the steering valve can rotate relative to the outer shell body so that the lower end of the passage is communicated with an inner cavity of the injection needle and an inner cavity of the detection needle respectively.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of medical equipment, in particular to an injection pipeline eccentric valve switching structure. 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 will affect the next detection and cannot be reused. SUMMARY

[0004] The present application provides an injection pipeline eccentric valve switching structure, 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 pipeline eccentric valve switching structure, which comprises:

[0006] a joint for connecting a syringe;

[0007] a diverter valve rotatably arranged in the joint, the diverter valve being provided with a channel, the lower end of the channel being offset from the axis of the diverter valve, and the upper end of the channel being connected to the joint;

[0008] an outer housing rotatably arranged in the diverter valve;

[0009] an inner housing embedded in the outer housing;

[0010] an injection needle arranged in the outer housing;

[0011] a detection needle arranged in the inner housing, the detection needle being arranged in the injection needle, and the diverter valve being capable of rotating relative to the outer housing to make the lower end of the channel communicate with the inner cavity of the injection needle and the inner cavity of the detection needle, respectively.

[0012] Further, the outer housing and the inner housing are provided with a limiting groove and a limiting block, respectively, and the limiting groove and the limiting block are matched to fix the inner housing and the outer housing relative to each other.

[0013] Further, the joint is provided with a first annular groove, and the steering valve is provided with a first annular block, the first annular groove and the first annular block are matched, so that the joint can rotate relative to the steering valve.

[0014] Further, the steering valve is provided with a second annular groove, and the injection needle is provided with a second annular block, the second annular groove and the second annular block are matched, so that the steering valve can rotate relative to the injection needle.

[0015] Further, the steering valve is provided with a locking groove, and the injection needle is provided with a locking block, the locking groove and the locking block are matched, so that the steering valve and the injection needle are relatively fixed.

[0016] Further, a sealing layer is arranged between the steering valve and the injection needle.

[0017] Further, the inner shell is provided with an injection hole and a detection hole, the injection hole is communicated with the inner cavity of the detection needle, and the detection hole is communicated with the inner cavity of the detection needle.

[0018] Further, the outer shell is provided with a stepped groove, and the stepped groove is matched with the inner shell.

[0019] Further, the diameter of the channel gradually decreases from top to bottom.

[0020] Further, the injection needle is provided with a sharp opening at the bottom or an opening at the side.

[0021] The beneficial effects of the present application are as follows.

[0022] 1. When injecting, the channel of the steering valve is communicated with the detection needle, if the needle tip is inserted into the blood vessel cavity, due to the blood pressure difference between the cavity and the blood vessel, the blood will flow into the inner cavity of the needle and fill the cavity, by observing the cavity, the blood in the chamber can be observed, to determine whether the needle tip is in the blood vessel cavity, if the blood vessel is not punctured, the steering valve can be rotated, so that the channel of the steering valve is communicated with the injection needle and connected with the syringe through the joint, so that the syringe can inject medicine through the injection needle; when the needle tip is inserted into the blood vessel, after taking out the needle tube, the joint is connected with the syringe, physiological saline can be introduced to clean the blood in the injection needle, so that the injection needle can be reused; the steering valve arranged offset to the axis makes the channel able to communicate with different needle tubes; when installing, the injection needle is first installed to the outer shell, the detection needle is installed to the inner shell, and then the inner shell is installed to the outer shell, the two are respectively installed and arranged, which reduces the processing difficulty and is convenient for installation and use. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1is the general structure diagram of the injection pipeline switching structure of the injection needle assembly of the embodiment of the present application and the enlarged diagram of A part;

[0024] Figure 2 is the cross-sectional structure diagram of the injection pipeline switching structure of the injection needle assembly of the embodiment of the present application;

[0025] Figure 3 is the structure diagram of the steering valve of the embodiment of the present application;

[0026] Figure 4 is the structure diagram of the injection needle and the detection needle of the embodiment of the present application;

[0027] Figure 5 is the diagram of the injection needle with the bottom sharp opening and the side opening.

[0028] Reference signs:

[0029] The first annular block 110 of the joint 100;

[0030] The steering valve 200, the channel 210, the first annular groove 220, the second annular groove 230, and the locking groove 240;

[0031] The injection needle 300, the second annular block 310, the locking block 320, the outer shell 330, and the stepped groove 331;

[0032] The detection needle 400, the sealing layer 410, and the inner shell 420. DETAILED DESCRIPTION

[0033] The following will describe several embodiments of the present application, including the embodiments corresponding to the drawings, and it can be understood that the drawings are used to assist in understanding the technical features and technical solutions of the present application, and should not be understood as limiting the protection scope of the present application.

[0034] The following will combine the embodiments and the drawings to clearly and completely describe the concept, specific structure and generated technical effects of the present application, so as to fully understand the purpose, scheme and effect 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.

[0035] 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 another feature, or indirectly fixed, connected on another 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.

[0036] 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 therefore cannot be understood as limiting the present application.

[0037] 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, etc. are understood to include the number.

[0038] 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 the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features or the order of the indicated technical features.

[0039] It should be noted that unless otherwise explicitly limited, all technical and scientific terms used herein are the same as those commonly understood by those skilled in the art. The terms used in the specification are only for the purpose of describing specific embodiments, and are not intended to limit the present application.

[0040] Referring to Figures 1-5 , the basic embodiment of the first aspect of the present application provides an injection pipeline eccentric valve switching structure, comprising:

[0041] The joint 100 is used for connecting the syringe;

[0042] The diverter valve 200 is rotatably arranged in the joint 100, and the diverter valve 200 is provided with a passage 210, the lower end of the passage 210 deviates from the axis of the diverter valve 200, and the upper end of the passage 210 is communicated with the joint 100;

[0043] The outer shell 330 is rotatably arranged in the diverter valve 200;

[0044] The inner shell 420 is embedded in the outer shell 330;

[0045] The injection needle 300 is arranged in the outer shell 330;

[0046] The detection needle 400 is arranged in the inner shell 420, and the detection needle 400 is arranged in the injection needle 300, and the diverter valve 200 can rotate relative to the outer shell 330, so that the lower end of the passage 210 is communicated with the inner cavity of the injection needle 300 and the inner cavity of the detection needle 400, respectively.

[0047] The injection pipeline eccentric valve switching structure of the basic embodiment of the first aspect of the application, when injecting, the channel 210 of the diversion valve 200 is communicated with the detection needle 400, if the needle tip is inserted into the blood vessel cavity, due to the blood pressure difference between the cavity and the blood vessel, the blood will flow into the inner cavity of the needle and fill the cavity, by observing the cavity, the blood in the chamber can be observed, to determine whether the needle tip is in the blood vessel cavity, if not punctured into the blood vessel, the diversion valve 200 can be rotated, so that the channel 210 of the diversion valve 200 is communicated with the injection needle 300 and connected with the syringe through the connector 100, so that the syringe can inject the medicine through the injection needle 300; when the needle tip is inserted into the blood vessel, after taking out the needle tube, the connector 100 is connected with the syringe, and physiological saline can be introduced to clean the blood in the injection needle, so that the injection needle 300 can be reused; the diversion valve 200 is arranged offset from the axis, so that the channel 210 can be communicated with different needle tubes; when installing, the injection needle 300 is first installed to the outer shell 330, the detection needle 400 is installed to the inner shell 420, and then the inner shell 420 is installed to the outer shell 330, so that the two are respectively installed and arranged, the processing difficulty is reduced, and the installation and use are facilitated.

[0048] It can be understood that the detection needle 400 is arranged in the injection needle 300, the diameter of the injection needle 300 is smaller than that of the detection needle 400, so the detection needle 400 can be arranged in the injection needle 300, and the inner cavity of the injection needle 300 is the space between the inner wall of the detection needle 400 and the outer wall of the detection needle 400, and the inner cavity of the detection needle 400 is the space inside the detection needle 400.

[0049] In some embodiments, the connector 100 and the diversion valve 200 are transparent structures, which are convenient for users to observe.

[0050] In some embodiments, the connector 100 and the diversion valve 200 are provided with a first annular groove 220 and a first annular block 110 respectively, the first annular groove 220 and the first annular block 110 are matched, so that the connector 100 can rotate relative to the diversion valve 200. When the diversion valve 200 is rotated, the connector 100 is prevented from rotating together, which is convenient for adjusting the angle of the diversion valve 200.

[0051] In some embodiments, the diversion valve 200 and the injection needle 300 are provided with a second annular groove 230 and a second annular block 310 respectively, the second annular groove 230 and the second annular block 310 are matched, so that the diversion valve 200 can rotate relative to the injection needle 300. When the diversion valve 200 is rotated, the injection needle 300 is prevented from rotating together, which is convenient for adjusting the angle of the diversion valve 200.

[0052] In some embodiments, the switching valve 200 is provided with a locking groove 240, and the injection needle 300 is provided with a locking block 320. The locking groove 240 and the locking block 320 are matched to fix the switching valve 200 and the injection needle 300. The relative position of the channel 210 and the detection needle 400 is determined by the matching of the locking groove 240 and the locking block 320. The channel 210 can be aligned with the detection needle 400 and the relative rotation of the switching valve 200 and the injection needle 300 is prevented, so that the channel 210 can keep in communication with the detection needle 400. When the detection is completed, the switching valve 200 is rotated, the locking block 320 is slightly deformed, the locking block 320 passes through the locking groove 240, and is rotated to a certain angle and matched with another locking groove 240, so that the channel 210 is in communication with the inner cavity of the injection needle 300 and keeps fixed.

[0053] Further, the depth of the locking groove 240 is 0.5mm-1mm. The main function of the locking groove 240 is to determine the communication of the channel 210 and the detection needle 400. The relative position of the switching valve 200 and the detection needle 400 is accurate without external force, so that a smaller depth of the locking groove 240 is adopted to facilitate the rotation of the switching valve 200.

[0054] In some embodiments, a sealing layer 410 is arranged between the switching valve 200 and the injection needle 300. The sealing layer 410 prevents the communication between the injection needle 300 and the detection needle 400, so that the blood of the detection needle penetrates into the injection needle 300 or the injection liquid of the injection needle 300 penetrates into the detection needle 400.

[0055] In some embodiments, the inner housing 420 is provided with an injection hole and a detection hole. The injection hole is in communication with the inner cavity of the detection needle 400, and the detection hole is in communication with the inner cavity of the detection needle 400. The channel 210 is communicated with the detection hole and the injection hole through the detection hole and the injection hole arranged on the inner housing 420, and the flow direction of the channel 210 is adjusted by the relative rotation between the inner housing 420 and the detection needle 400.

[0056] In some embodiments, the outer housing 330 is provided with a stepped groove 331 matched with the inner housing 420. The stepped groove 331 of the outer housing 330 facilitates the installation of the inner housing 420 to the outer housing 330.

[0057] In some embodiments, the outer shell 330 and the inner shell 420 are provided with a limiting slot and a limiting block, respectively, and the limiting slot and the limiting block are matched to fix the relative positions of the inner shell 420 and the outer shell 330. The matching of the limiting slot and the limiting block enables the insertion of the inner shell 420 along the gap of the limiting block, and prevents the relative rotation of the inner and outer shells, so that the positions of the detection needle 400 and the injection needle 300 are not uncertain, and the communication of the passage 210 of the diverter valve 200 is not inconvenient.

[0058] In some embodiments, the diameter of the passage 210 gradually decreases from top to bottom. The diameter of the passage 210 is suitable for the diameter of the needle tube.

[0059] In some embodiments, the injection needle 300 is provided with a bottom sharp opening or a side opening. The scheme of the embodiments of the present application is suitable for Figure 5 The injection needle 300 of the two connectors 100 shown is expanded in the range of application.

[0060] 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.

[0061] Although the present application has been shown and described with respect to some embodiments, 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 eccentric valve switching structure for an injection pipeline, characterized in that: include: A connector (100) for connecting a syringe; A steering valve (200) is rotatably disposed on the connector (100), the steering valve (200) is provided with a channel (210), the lower end of the channel (210) deviates from the axis of the steering valve (200), the upper end of the channel (210) is connected to the connector (100), a sealing layer (410) is provided between the steering valve (200) and the injection needle (300), and the diameter of the channel (210) gradually decreases from top to bottom; an outer shell (330) rotatably mounted on the steering valve (200); an inner shell (420) embedded in the outer shell (330); An injection needle (300) is provided in the outer shell (330); A detection needle (400) is disposed in the inner housing (420). The detection needle (400) is disposed in the injection needle (300). The steering valve (200) is rotatable relative to the outer housing (330) so that the lower end of the channel (210) is communicated with the inner cavity of the injection needle (300) and the inner cavity of the detection needle (400), respectively.

2. The eccentric valve switching structure of the injection pipeline according to claim 1, characterized in that: One of the outer shell (330) and the inner shell (420) is provided with a limiting groove, and the other is provided with a limiting block. The limiting groove cooperates with the limiting block to relatively fix the inner shell (420) and the outer shell (330).

3. The eccentric valve switching structure of the injection pipeline according to claim 1, characterized in that: The connector (100) and the steering valve (200) are each provided with a first annular groove (220) and a first annular block (110) on one side and a first annular block (110) on the other side. The first annular groove (220) and the first annular block (110) cooperate to enable the connector (100) to rotate relative to the steering valve (200).

4. The injection pipeline eccentric valve switching structure according to claim 1, characterized in that: The steering valve (200) and the injection needle (300) are provided with a second annular groove (230) on one side and a second annular block (310) on the other side. The second annular groove (230) and the second annular block (310) cooperate to enable the steering valve (200) to rotate relative to the injection needle (300).

5. The injection pipeline eccentric valve switching structure according to claim 1, characterized in that: The steering valve (200) and the injection needle (300) are provided with a locking groove (240) on one side and a locking block (320) on the other side. The locking groove (240) cooperates with the locking block (320) to relatively fix the steering valve (200) and the injection needle (300).

6. The injection pipeline eccentric valve switching structure according to claim 1, characterized in that: The inner shell (420) is provided with an injection hole and a detection hole, the injection hole is communicated with the inner cavity of the detection needle (400), and the detection hole is communicated with the inner cavity of the detection needle (400).

7. The injection pipeline eccentric valve switching structure according to claim 1, characterized in that: The outer shell (330) is provided with a stepped groove (331), and the stepped groove (331) cooperates with the inner shell (420).

8. The injection pipeline eccentric valve switching structure according to claim 1, characterized in that: The injection needle (300) has a sharp opening at the bottom or a side opening.

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