Handheld needle type peripheral microsyringe

Abstract

The utility model discloses a handheld needle type peripheral microsyringe, belongs to the technical field of medical instruments, and solves the technical problems that when a microsyringe pump is used for virus injection, the volume of the instrument is large, and the visual field is possibly blocked when the microsyringe pump is operated under a microscope. The device comprises a micro-injection pump, a micro-injection needle, a Teflon tube, an intravenous infusion needle and a glass electrode, the micro-injection needle is fixed on the micro-injection pump, a push rod of the micro-injection needle is connected with the output end of the micro-injection pump, the micro-injection needle is pushed by the micro-injection pump to perform accurate injection, and the Teflon tube is fixed on the glass electrode. The output end of the micro-injection needle is connected with one end of the Teflon tube, the other end of the Teflon tube is connected with one end of the intravenous infusion needle, and the other end of the intravenous infusion needle is connected with the glass electrode. The whole injector is compact in structure and convenient to operate in a narrow space or under a mirror, and the view cannot be blocked.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field, concretely relates to a hand -held needle type's peripheral micro -syringe. BACKGROUND

[0002] Virus tracing is one of the most commonly used methods to explore the relationship between neurons and neuronal projections in the field of neurobiology. This technique mainly combines positioning injection and various tracing viruses. Among them, stereotactic injection of brain is the most commonly used and mature injection method for viral infection of the nervous system, and a fixed micro - sample pump is usually used for virus injection.

[0003] However, for virus injection at some peripheral nerve tissue distribution places, such as peripheral organs, ganglions and the like, the fixed micro - sample pump is inconvenient to operate. There are handheld micro - sample pumps on the market now, but they are expensive, and the handheld micro - sample pump is still relatively heavy, and the instrument volume is large, and the operation under the mirror may have the problem of blocking the field of view. UTILITY MODEL CONTENT

[0004] In order to solve the problems existing in the prior art, the purpose of the present application is to provide an economical, simple to manufacture, convenient to operate handheld needle type peripheral micro - syringe, so as to realize the injection of tracing virus at the distribution place of peripheral nerve tissue.

[0005] In order to achieve the above purpose, the utility model provides the following technical scheme:

[0006] The utility model provides a kind of handheld needle type's peripheral micro - syringe, including micro - sample pump, micro - injection needle, Teflon pipe, intravenous infusion needle and glass microelectrode, wherein, micro - injection needle is fixed on micro - sample pump, the push rod of micro - injection needle is connected with the output end of micro - sample pump, and micro - injection needle is pushed by micro - sample pump to carry out accurate injection, the output end of micro - injection needle is connected with one end of Teflon pipe, the other end of Teflon pipe is connected with one end of intravenous infusion needle, the other end of intravenous infusion needle is connected with glass microelectrode.

[0007] Further, the lower end of the micro - sample pump is provided with a locking device, and the tip of the micro - injection needle penetrates the locking device. When the push rod of the micro - injection needle is pushed, the locking device facilitates the positioning of the micro - injection needle.

[0008] Further, the Teflon pipe is sleeved at the tip of the micro - injection needle and is fixedly connected by heat -staked glue.

[0009] Further, the intravenous infusion needle has an intravenous infusion tube at one end, and the length of the intravenous infusion tube is 1-2 cm.

[0010] Further, the diameter of the Teflon tube is smaller than the diameter of the intravenous infusion tube, and the Teflon tube is inserted into the intravenous infusion tube for connection.

[0011] Further, the glass microelectrode and the intravenous infusion needle are fixedly connected through glue.

[0012] Based on the above technical solution, the embodiments of the present application can at least produce the following technical effects:

[0013] The hand-held needle type peripheral microinjector has a compact structure, is convenient to operate in a narrow space or under a mirror, and does not block the field of view; the micro-injection needle is pushed by the micro-injection pump for accurate injection, so that the accuracy and controllability of injection are ensured; the components are fixedly connected through a Teflon tube and hot melt glue, so that the stability and sealing performance of the connection are ensured, and the leakage problem in the injection process is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings shown.

[0015] Figure 1 is a structural schematic view of the hand-held needle type peripheral microinjector of the present application;

[0016] In the above drawings, the component names corresponding to the reference signs are as follows:

[0017] 1, micro-injection pump; 2, micro-injection needle; 3, Teflon tube; 4, intravenous infusion needle; 5, glass microelectrode; 6, locking device; 7, intravenous infusion tube. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that those skilled in the art can realize it. When the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection required by the present application.

[0019] In the utility model, unless another definite provision and limitation, first feature is on second feature " on " or " under " first and second feature can be direct contact, or first and second feature is indirectly contacted through intermediate medium. Moreover, first feature " on " " above " and " on " second feature can be first feature is directly above or obliquely above, or just indicate that first feature horizontal height is higher than second feature. First feature " under " " below " and " under " second feature can be first feature is directly below or obliquely below, or just indicate that first feature horizontal height is less than second feature.

[0020] The utility model discloses a purpose is realized through the following technical schemes:

[0021] As Figure 1 The utility model discloses a handheld needle type's periphery microinjector, including micro - sample pump 1, micro - injection needle 2, teflon pipe 3, intravenous infusion needle 4 and glass microelectrode 5, wherein, micro - injection needle 2 is fixed on micro - sample pump 1, and the push rod of micro - injection needle 2 is connected with the output end of micro - sample pump 1, and micro - injection needle 2 is pushed by micro - sample pump 1 to carry out accurate quantitative injection, and the output end of micro - injection needle 2 is connected with one end of teflon pipe 3, and the other end of teflon pipe 3 is connected with one end of intravenous infusion needle 4, and the other end of intravenous infusion needle 4 is connected with glass microelectrode 5, and glass microelectrode 5 is as the front end of handheld injection needle, has puncture ability, and is used for penetrating skin and tissue and entering target area.

[0022] In specific embodiments, the lower end of the micro-sample pump 1 is provided with a locking device 6, and the tip of the micro-injection needle 2 passes through the locking device 6. When the push rod of the micro-injection needle 2 is pushed, the locking device 6 facilitates the positioning of the micro-injection needle 2.

[0023] In specific embodiments, the teflon tube 3 is sleeved at the tip of the micro-injection needle 2 and is fixedly connected through heat adhesive, ensuring the stability and sealing property of the device and preventing material leakage.

[0024] In specific embodiments, the intravenous infusion needle 4 has an intravenous infusion tube 7 at one end, and the length of the intravenous infusion tube 7 is 1-2 cm.

[0025] In specific embodiments, the diameter of the teflon tube 3 is smaller than the diameter of the intravenous infusion tube 7, and the teflon tube 3 is inserted into the intravenous infusion tube 7 for connection.

[0026] In specific embodiments, the glass microelectrode 5 and the intravenous infusion needle 4 are fixedly connected through heat adhesive, ensuring the stability and sealing property of the device and preventing material leakage.

[0027] The manufacturing steps of the handheld needle type's periphery microinjector are as follows:

[0028] (1) The production of handheld glass microelectrode: the glass tube is drawn into a suitable glass tip by using a glass drawing instrument, and then the glass needle is inserted into the front end of the intravenous infusion needle and fixed by glue;

[0029] (2) The connection of microsyringe needle and handheld glass microelectrode: the tip of the microsyringe needle is connected with a Teflon tube, and is fixed by a glue gun, then the hose connected with the intravenous infusion needle is cut to 1cm, and then the other end of the Teflon tube connected with the microsyringe needle is inserted into the intravenous infusion tube;

[0030] (3) The preparation of virus injection: the whole injection pipeline is filled with paraffin to avoid the generation of bubbles, and the microsyringe needle is fixed on a microsyringe pump, and the handheld needle end can be used for the suction and injection of virus.

[0031] The basic principle and main features of the utility model and the advantages of the utility model are shown and described. The skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and the description in the specification are only to illustrate the principle of the utility model, and the utility model will have various changes and improvements without departing from the spirit and scope of the utility model, and these changes and improvements all fall into the scope of the utility model to be protected. The scope of the utility model to be protected is defined by the attached claims and its equivalents.

Claims

1. A hand-held, needle-based, peripheral microinfusor, characterized in that, Including trace sample pump (1), trace injection needle (2), Teflon tube (3), intravenous infusion needle (4) and glass microelectrode (5), wherein, the trace injection needle (2) is fixed on the trace sample pump (1), the push rod of the trace injection needle (2) is connected with the output end of the trace sample pump (1), the trace injection needle (2) is pushed by the trace sample pump (1) to carry out accurate injection, the output end of the trace injection needle (2) is connected with one end of the Teflon tube (3), the other end of the Teflon tube (3) is connected with one end of the intravenous infusion needle (4), the other end of the intravenous infusion needle (4) is connected with the glass microelectrode (5).

2. The hand-held, needle-based peripheral microinfusor according to claim 1, wherein, The lower end of the trace sample pump (1) is provided with a locking device (6), the tip of the trace injection needle (2) passes through the locking device (6), when the push rod of the trace injection needle (2) is pushed, the locking device (6) is convenient for limiting the trace injection needle (2).

3. The hand-held, needle-based peripheral microinfusor of claim 1, wherein, The Teflon tube (3) is sleeved at the tip of the trace injection needle (2) and is fixedly connected through glue.

4. The hand-held, needle-based peripheral microinfusor of claim 1, wherein, The intravenous infusion needle (4) is provided with an intravenous infusion tube (7) at one end, and the length of the intravenous infusion tube (7) is 1-2cm.

5. The hand-held, needle-based peripheral microinfusor according to claim 4, wherein, The diameter of the Teflon tube (3) is smaller than the diameter of the intravenous infusion tube (7), and the Teflon tube (3) is inserted into the intravenous infusion tube (7) for connection.

6. The hand-held, needle-based peripheral microinfusor of claim 1, wherein, The glass microelectrode (5) and the intravenous infusion needle (4) are fixedly connected through glue.

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