CN115154768A - Injection needle assembly and needle mounting method - Google Patents
Injection needle assembly and needle mounting method Download PDFInfo
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- CN115154768A CN115154768A CN202210622775.7A CN202210622775A CN115154768A CN 115154768 A CN115154768 A CN 115154768A CN 202210622775 A CN202210622775 A CN 202210622775A CN 115154768 A CN115154768 A CN 115154768A
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- Prior art keywords
- needle
- mounting
- injection
- positioning
- tube
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3295—Multiple needle devices, e.g. a plurality of needles arranged coaxially or in parallel
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3295—Multiple needle devices, e.g. a plurality of needles arranged coaxially or in parallel
- A61M5/3298—Needles arranged in parallel
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/34—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/34—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub
- A61M5/349—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub using adhesive bond or glues
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- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses a syringe needle assembly for solving the problem of insufficient mounting precision of syringe needles in the field of medical products, which comprises a glue injection hole and a mounting concave position; and a needle mounting method is also disclosed, a needle mounting clamp is used for positioning the needle tube and the needle seat, and glue is injected to the positioning concave position through the glue injection hole. According to the injection needle assembly, the space for placing the needle tube is provided by the positioning concave position formed by the matching of the positioning block and the positioning groove, the channel for injecting glue from the outside to the inside is provided by the glue injection hole, the injection needle assembly is convenient to mount quickly, the needle tube can be fixedly connected with the needle seat more firmly, and the mounting precision and the mounting efficiency of the injection needle assembly are improved. The needle mounting method of the invention completes the positioning of the needle tube and the needle seat by the application of the needle mounting clamp, and completes the fixation of the needle tube and the needle seat by glue injection and solidification, thereby improving the mounting precision and the mounting efficiency of the injection needle assembly.
Description
Technical Field
The invention relates to the field of medical products, in particular to an injection needle assembly and an injection needle mounting method.
Background
The injection needle is generally used for injecting a medicine below the epidermis of the skin, and because the skin itself has a high density and is thin, when an intradermal or subcutaneous injection operation is performed, particularly when the intradermal injection is performed, the injection position is shallow, so that the injection resistance received when the injection operation is performed by using a single injection needle is large, and the purpose of reducing the injection resistance can be achieved by mounting a plurality of injection needles on one injection tube at present, but the injection tube with the plurality of injection needles still cannot be widely used in the existing market, and the reason is mainly due to the insufficient mounting accuracy of the injection needle.
Disclosure of Invention
The invention provides an injection needle assembly and a needle mounting method, which aim to at least solve one of the technical problems in the prior art and effectively improve the mounting precision of the injection needle assembly.
A first aspect of the present invention is an injection needle assembly including:
the upper end of the needle seat is provided with a positioning groove, and the lower end of the needle seat is provided with an injection channel;
the positioning block is arranged in the positioning groove, and a positioning concave position is formed between the outer side wall of the positioning block and the inner side wall of the positioning groove;
the upper end of the needle tube extends out of the needle base, the lower end of the needle tube is communicated with the injection channel, part of the needle tube is positioned in the positioning concave position, part of the needle tube in the positioning concave position is connected with the inner side wall of the positioning concave position through glue, the upper end of the needle tube is a blade surface, and the lower end of the needle tube is a blade surface or a plane;
the position of the needle seat corresponding to the positioning concave position is provided with a glue injection hole which is communicated with the positioning concave position.
Further, a limiting plate is arranged at the lower end of the positioning groove and can be abutted against the lower end of the positioning block; the limiting plate is a convex rib which is arranged on the inner side wall of the positioning groove in an inward convex mode.
Furthermore, a positioning concave position is arranged on the outer side wall of the positioning block, and the positioning concave position extends linearly along the vertical direction;
or the positioning concave position is arranged on the inner side wall of the positioning groove and extends linearly along the vertical direction.
Further, the injection passage includes a tapered portion whose radial area gradually decreases from bottom to top; the lower end of the needle base is provided with a male head or a female head of a luer connector.
Furthermore, the included angle range of the blade surface at the upper end of the needle tube and the vertical direction is [10 degrees, 20 degrees ]; the length of the needle tube extending out of the needle base is [0.5mm,5mm ].
Furthermore, four positioning concave positions are arranged on the positioning block side by side, four needle tubes are arranged in the corresponding positioning concave positions, the upper ends of the four needle tubes are blade surfaces, and the shapes and the orientations of the four blade surfaces are the same.
The technical scheme of the second aspect of the invention is a needle mounting method, which is applied to the injection needle assembly of the first aspect and uses a first needle mounting clamp and a second needle mounting clamp;
the first needle installing clamp comprises:
a first base;
the first mounting groove is arranged at the upper end of the first base;
the mounting base is convexly arranged at the lower end of the first mounting groove and corresponds to the inner contour of the injection channel;
the mounting column is convexly arranged at the upper end of the mounting base, the upper end of the mounting column is provided with a first mounting hole, and the lower end of the first mounting hole corresponds to the outer contour of the lower end of the needle tube;
the second dress needle anchor clamps include:
a second base;
the second mounting groove is arranged at the lower end of the second base and corresponds to the outer contour of the upper end of the needle seat;
the second mounting hole is arranged at the upper end of the second mounting groove, corresponds to the outer contour of the upper end of the needle tube, and is provided with a blade surface;
the needle installing method comprises the following steps:
placing the injection needle assembly into the first needle mounting fixture, inserting the mounting base into the injection channel, inserting the mounting column into the positioning concave position, and inserting the lower end of the needle tube into the first mounting hole;
covering the second needle mounting fixture above the first needle mounting fixture, inserting the upper end of the needle base into the second mounting groove, and inserting the upper end of the needle tube into the second mounting hole;
the first needle installing clamp and the second needle installing clamp are turned over by 180 degrees, the first needle installing clamp is taken down, and the second needle installing clamp is shaken, so that the blade surface in the second mounting hole is contacted with one end corresponding to the needle tube, and the position of the needle tube is stable;
injecting glue to the positioning concave position through the glue injection hole;
curing;
and taking down the second needle installing clamp.
Further, the injection needle assembly comprises four needle tubes, the first mounting holes and the second mounting holes correspond to the needle tubes one by one, and when the needle tubes are stable in position, the blade surfaces of the four needle tubes face the same direction; the curing is completed by ultraviolet lamp irradiation.
A third aspect of the present invention is a needle mounting method applied to the injection needle assembly of the first aspect, the needle mounting method applying a first needle mounting jig, the first needle mounting jig including:
a first base;
the first mounting groove is arranged at the upper end of the first base;
the mounting base is convexly arranged at the lower end of the first mounting groove and corresponds to the inner contour of the injection channel;
the mounting column is convexly arranged at the upper end of the mounting base, the upper end of the mounting column is provided with a first mounting hole, the lower end of the first mounting hole corresponds to the external contour of the lower end of the needle tube, and the lower end of the first mounting hole is provided with a blade surface;
the needle installing method comprises the following steps:
placing the injection needle assembly into the first needle mounting fixture, inserting the mounting base into the injection channel, inserting the mounting column into the positioning concave position, and inserting the lower end of the needle tube into the first mounting hole;
shaking the first needle mounting fixture to enable the blade surface in the first mounting hole to be in contact with one end, corresponding to the needle tube, of the needle tube until the position of the needle tube is stable;
injecting glue to the positioning concave position through the glue injection hole;
curing;
and taking down the first needle installing clamp.
Further, the injection needle assembly comprises four needle tubes, the first mounting holes correspond to the needle tubes one by one, and when the needle tubes are stable in position, the blade surfaces of the four needle tubes face the same direction; the curing is completed by ultraviolet lamp irradiation.
The invention has the following beneficial effects:
according to the injection needle assembly, the space for placing the needle tube is provided by the positioning concave position formed by the matching of the positioning block and the positioning groove, the channel for injecting glue from the outside to the inside is provided by the glue injection hole, the injection needle assembly is convenient to mount quickly, the needle tube can be fixedly connected with the needle seat more firmly, and the mounting precision and the mounting efficiency of the injection needle assembly are improved.
The needle mounting method of the invention completes the positioning of the needle tube and the needle seat by applying the needle mounting clamp, completes the fixation of the needle tube and the needle seat by injecting glue and curing, and improves the mounting precision and the mounting efficiency of the injection needle assembly.
Drawings
FIG. 1 is a perspective view of an embodiment of an injection needle assembly;
FIG. 2 is a side perspective view of an embodiment of the injection needle assembly;
FIG. 3 is a schematic structural view of a first embodiment of a needle cannula;
FIG. 4 is a schematic structural view of a second embodiment of the needle cannula;
FIG. 5 is a schematic view A of a first embodiment of a needle mounting method;
FIG. 6 is a schematic view B of a first embodiment of a needle mounting method;
FIG. 7 is a schematic view C of a first embodiment of a needle mounting method;
FIG. 8 is a schematic view D of a first embodiment of a needle mounting method;
FIG. 9 is a schematic view A of a second embodiment of the needle mounting method;
FIG. 10 is a schematic view B of the second embodiment of the needle installing method.
Reference numerals:
a needle seat 100, a positioning groove 110, an injection channel 120, a conical part 121, a limiting plate 130,
A positioning block 200,
A positioning concave position 300,
A needle tube 400, a blade face 410,
A glue injection hole 500,
A first needle mounting fixture 600, a first base 610, a first mounting groove 620, a mounting base 630, a mounting post 640, a first mounting hole 650,
A second needle mounting fixture 700, a second base 710, a second mounting groove 720, and a second mounting hole 730.
Detailed Description
The following description will describe several embodiments of the present invention, including embodiments corresponding to the accompanying drawings, it being understood that the drawings are for assisting understanding of technical features and technical solutions of the present invention, and should not be construed as limiting the scope of the present invention.
The conception, the specific structure and the technical effects of the present invention will be clearly and completely described in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the schemes and the effects of the present invention. It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict.
It should be noted that, unless otherwise specifically limited, when a feature is referred to as being "fixed," "connected," or "mounted" to another feature, it can be directly fixed or connected to the other feature, or indirectly fixed or connected to the other feature, and the terms "fixed," "connected," or "mounted" are used broadly, and those skilled in the art can reasonably determine the specific meaning of the above-mentioned words in the present invention by combining the details of the technical solutions.
It should be noted that the description of the orientation or positional relationship indicated by upper, lower, left, right, top, bottom, front, rear, inner, outer, etc. used in the present invention is based on the orientation or positional relationship of the drawings or embodiments, and is only for convenience of description and simplification of the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
It should be noted that, as used herein, the term "and/or" includes any combination of one or more of the associated listed items, several means one or more, several means two or more, greater than, less than, exceeding, etc. are understood not to include the essential numbers, and greater than, less than, etc. are understood to include the essential numbers.
It should be noted that, if the first and the second are described in the present invention, they are only used for distinguishing technical features, but they are not interpreted as indicating or implying relative importance or implying number of indicated technical features or implying precedence of indicated technical features.
It is to be understood that, unless otherwise specifically defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The basic embodiment of the first aspect of the invention provides an injection needle assembly, with reference to fig. 1 and 2, comprising:
a needle holder 100, the upper end of which is provided with a positioning groove 110 and the lower end of which is provided with an injection channel 120;
the positioning block 200 is arranged in the positioning groove 110, and a positioning concave position 300 is formed between the outer side wall of the positioning block 200 and the inner side wall of the positioning groove 110;
the upper end of the needle tube 400 extends out of the needle seat 100, the lower end of the needle tube 400 is communicated with the injection channel 120, part of the needle tube 400 is positioned in the positioning concave position 300, and part of the needle tube 400 in the positioning concave position 300 is connected with the inner side wall of the positioning concave position 300 through glue;
the needle seat 100 is provided with a glue injection hole 500 corresponding to the positioning concave position 300, and the glue injection hole 500 is communicated with the positioning concave position 300.
According to the injection needle assembly, the positioning concave position 300 formed by the positioning block 200 and the positioning groove 110 provides a space for placing the needle tube 400, the glue injection hole 500 is arranged to provide a channel for injecting glue from the outside to the inside, so that the injection needle assembly is convenient to mount quickly, the needle tube 400 can be fixedly connected with the needle seat 100 more firmly, and the mounting precision and the mounting efficiency of the injection needle assembly are improved.
It can be understood that the injection channel is used for communicating the handle, the handle is communicated with the host, the host and the handle are used for controlling and inputting injection to the injection needle assembly, and then the injection needle assembly punctures skin to inject the injection into a human body.
It can be understood that the positioning concave position can be a groove position extending up and down, the groove position can form a hole position by enveloping the outer side wall of the positioning block and the inner side wall of the positioning groove, and the section of the positioning concave position, which is normal in the up-down direction, can be regular or irregular.
It will be appreciated that the lower end of the needle cannula may be located at the lower end of the locating slot, and the injection passage directs the injection fluid into the lower end of the needle cannula by narrowing the diameter of the tube from bottom to top.
It is understood that the lower half of the needle cannula may be disposed within the positioning recess, and the lower half may comprise 30% to 80% of the overall length of the needle cannula.
It can be understood that the glue connection mode can be a connection mode formed after the glue injected into the positioning concave position through the glue injection hole is solidified.
It is understood that the adhesive may be a general adhesive.
The expansion of the basic embodiment, referring to fig. 2, the lower end of the positioning groove 110 is provided with a limiting plate 130, and the limiting plate 130 can abut against the lower end of the positioning block 200. The limiting plate 130 is arranged to support the positioning block 200 when the positioning block 200 is mounted, so as to separate the inner space of the needle holder 100 into the positioning groove 110 and the injection channel 120.
It can be understood that the limiting plate has a space which can accommodate the communication between the injection passage and the lower end of the needle tube.
In an extension of the basic embodiment, referring to fig. 2, the position-limiting plate 130 is a rib protruding inward from the inner sidewall of the positioning groove 110. With this arrangement, the position-limiting plate 130 can support the positioning block 200 and reserve a sufficient space for communicating the lower ends of the injection channel 120 and the needle tube 400.
It can be understood that the limiting plate can be perpendicular to the up-down direction, and the overall shape of the limiting plate can be "Contraband".
In the development of the basic embodiment, referring to fig. 2, the positioning concave 300 may be disposed on an outer sidewall of the positioning block 200, the positioning concave 300 linearly extends along an up-down direction, and the outer sidewall of the positioning block 200 and the inner sidewall of the positioning groove 110 may be enveloped to form a hole site. This arrangement facilitates the machining of the locating recess 300 in the locating block 200.
In the development of the basic embodiment, the positioning concave 300 may also be disposed on the inner sidewall of the positioning groove 110, the positioning concave 300 extends linearly in the up-down direction, and the outer sidewall of the positioning block 200 may also form a hole with the inner sidewall of the positioning groove 110. This arrangement facilitates clearance control of the positioning block 200 within the positioning slot 110, allowing for a tighter fit between the positioning block 200 and the positioning slot 110.
Expanding on the basic embodiment, referring to fig. 1 and 2, the injection passage 120 includes a tapered portion 121, the radial area of the tapered portion 121 gradually decreases from bottom to top, and the tapered portion 121 is disposed to facilitate introduction of the injection liquid into the needle tube 400; the lower end of the needle holder 100 is provided with a male or female luer connector, which facilitates connection of the needle assembly to other components.
Expanding on the basic embodiment, referring to fig. 3 and 4, the upper end of the needle tube 400 is a blade face 410, the lower end of the needle tube 400 is a blade face 410 or a plane, the blade face 410 at the upper end of the needle tube 400 is used for puncturing skin for transfusion, and the blade face 410 or the plane at the lower end of the needle tube 400 can be used with respective needle mounting methods.
It will be appreciated that the facet may be formed by at least some of the bevels, i.e. two bevels joined together, the plane being normal to the axis of the barrel.
According to the expansion of the basic embodiment, the included angle range between the blade surface at the upper end of the needle tube and the vertical direction can be [10 degrees and 20 degrees ], and the puncture effect of the needle tube is good in the range.
It will be appreciated that where more than two bevels are provided on the facet, each bevel may be within the range of [10 °,20 ° ].
It will be appreciated that the facets of the lower end of the barrel may be referenced to the facets of the upper end.
The basic embodiment is expanded, the length of the upper end of the needle tube extending out of the needle base can be [0.5mm,5mm ], the puncture effect of the needle tube in the range is good, and the skin puncture depth of the injection needle assembly can be conveniently controlled.
Expanding on the basic embodiment, referring to fig. 1 and 2, four positioning concave positions 300 are preferably arranged on the positioning block 200 side by side, four needle tubes 400 are arranged in the corresponding positioning concave positions 300, the upper ends of the four needle tubes 400 are provided with blade surfaces 410, and the shapes and the orientations of the four blade surfaces 410 are the same. This arrangement results in a four-needle injection needle assembly that is relatively versatile.
It will be appreciated that other multiple needle cannula needle assemblies may be used with the structure of the first aspect embodiment.
The basic embodiment of the second aspect of the present invention provides a needle mounting method, which is applied to the injection needle assembly of any embodiment of the first aspect, with reference to fig. 5-8, and which applies a first needle mounting jig 600 and a second needle mounting jig 700;
the first needle mounting jig 600 includes:
a first base 610;
a first mounting groove 620 provided at an upper end of the first base 610;
a mounting base 630 protruding from the lower end of the first mounting groove 620, the mounting base 630 corresponding to the inner contour of the injection passage 120;
the mounting column 640 is convexly arranged at the upper end of the mounting base 630, a first mounting hole 650 is formed at the upper end of the mounting column 640, and the lower end of the first mounting hole 650 corresponds to the outer contour of the lower end of the needle tube 400;
the second needle mounting jig 700 includes:
a second base 710;
a second mounting groove 720 provided at the lower end of the second base 710, the second mounting groove 720 corresponding to the outer contour of the upper end of the needle holder 100;
a second mounting hole 730 provided at the upper end of the second mounting groove 720, the second mounting hole 730 corresponding to the outer contour of the upper end of the needle tube 400, the upper end of the second mounting hole 730 having a blade surface 410;
the needle installing method comprises the following steps:
referring to fig. 5, the injection needle assembly is placed in the first needle mounting jig 600, the mounting base 630 is inserted into the injection passage 120, the mounting post 640 is inserted into the positioning recess 300, and the lower end of the needle tube 400 is inserted into the first mounting hole 650;
referring to fig. 6, the second needle installing clamp 700 is covered above the first needle installing clamp 600, the upper end of the needle holder 100 is inserted into the second installation groove 720, and the upper end of the needle tube 400 is inserted into the second installation hole 730;
referring to fig. 7 and 8, the first needle installing clamp 600 and the second needle installing clamp 700 are turned upside down by 180 °, the first needle installing clamp 600 is removed, and the second needle installing clamp 700 is shaken, so that the blade surface 410 in the second installation hole 730 is contacted with one end corresponding to the needle tube 400, and the position of the needle tube 400 is stable;
injecting glue to the positioning concave position 300 through the glue injection hole 500;
curing;
the second needle mounting fixture 700 is removed.
The method can be used for the injection needle assembly corresponding to the needle tube 400 in the figure 4, the installation efficiency and the installation precision in the whole process are high, the orientation of the blade face 410 of the needle tube 400 can be limited, and the product is convenient to use.
The expansion of basic embodiment, syringe needle subassembly include four needle tubs, and first mounting hole and second mounting hole all correspond with the needle tubing one-to-one, and when the needle tubing position was stable, the knife face orientation of four needle tubs was the same, can let the knife face of every needle tubing all be in same orientation under this setting, further promoted the installation accuracy.
It will be appreciated that the present method may be applied to the mounting of other multiple needle cannula injection needle assemblies.
The expansion of basic embodiment, the solidification adopts the ultraviolet lamp to shine the completion, and this setting can accomplish the solidification of adhesive fast, and the ultraviolet lamp installation requires lowly and be convenient for remove to the position that needs after the preceding step is accomplished.
A basic embodiment of the third aspect of the present invention provides a needle mounting method, which is applied to the injection needle assembly according to any one of the embodiments of the first aspect with reference to fig. 9 and 10, the needle mounting method applying a first needle mounting jig 600, the first needle mounting jig 600 including:
a first base 610;
a first mounting groove 620 provided at an upper end of the first base 610;
a mounting base 630 protruding from the lower end of the first mounting groove 620, the mounting base 630 corresponding to the inner contour of the injection passage 120;
the mounting column 640 is convexly arranged at the upper end of the mounting base 630, a first mounting hole 650 is arranged at the upper end of the mounting column 640, the lower end of the first mounting hole 650 corresponds to the external contour of the lower end of the needle tube 400, and the lower end of the first mounting hole 650 is provided with a blade surface 410;
the needle installing method comprises the following steps:
placing the injection needle assembly into the first needle mounting fixture 600, inserting the mounting base 630 into the injection passage 120, inserting the mounting post 640 into the positioning recess 300, and inserting the lower end of the needle tube 400 into the first mounting hole 650;
shaking the first needle mounting fixture 600 to make the blade surface 410 in the first mounting hole 650 contact with the corresponding end of the needle tube 400, until the position of the needle tube 400 is stable;
injecting glue into the positioning concave position 300 through the glue injection hole 500;
curing;
the first needle mounting fixture 600 is removed.
The method can be used for the injection needle assembly corresponding to the needle tube 400 in the figure 5, the installation efficiency and the installation precision in the whole process are high, the orientation of the blade face 410 of the needle tube 400 can be limited, and the product is convenient to use.
According to the expansion of the basic embodiment, the injection needle assembly comprises four needle tubes, the first mounting holes correspond to the needle tubes one by one, and when the needle tubes are stably positioned, the blade surfaces of the four needle tubes face the same direction. Under the arrangement, the blade face of each needle tube can be in the same orientation, and the installation precision is further improved.
It will be appreciated that the present method may be applied to the mounting of other multiple needle cannula needle assemblies.
The basic embodiment is expanded, and curing is completed by ultraviolet lamp irradiation. This setting can accomplish the solidification of adhesive fast, and the ultraviolet lamp installation requires lowly and is convenient for remove the position that needs after the preceding step is accomplished.
It is noted that terms such as "one embodiment," "some embodiments," "base embodiment," "extended embodiment," and the like may be used herein to describe various embodiments of the invention, and that particular features, structures, materials, or characteristics of the various embodiments may be combined while remaining within the spirit and scope of the invention.
Although a part of the embodiments of the present invention has been shown and described in the present specification, the present invention should not be limited to the above-described embodiments, and variations, modifications, equivalents and equivalent modifications of the embodiments without departing from the spirit and the spirit of the present invention should be included in the scope of the present disclosure, and they should be considered as falling within the scope of the present invention, as long as the technical effects of the present invention are achieved by the same or equivalent means.
Claims (10)
1. An injection needle assembly, comprising:
a needle seat (100), the upper end of which is provided with a positioning groove (110), and the lower end of which is provided with an injection channel (120);
the positioning block (200) is arranged in the positioning groove (110), and a positioning concave position (300) is formed between the outer side wall of the positioning block (200) and the inner side wall of the positioning groove (110);
the upper end of the needle tube (400) extends out of the needle seat (100), the lower end of the needle tube is communicated with the injection channel (120), part of the needle tube (400) is positioned in the positioning concave position (300), part of the needle tube (400) in the positioning concave position (300) is connected with the inner side wall of the positioning concave position (300) through glue, the upper end of the needle tube (400) is a blade surface (410), and the lower end of the needle tube (400) is a blade surface (410) or a plane;
the position of the needle seat (100) corresponding to the positioning concave position (300) is provided with a glue injection hole (500), and the glue injection hole (500) is communicated with the positioning concave position (300).
2. The needle assembly according to claim 1, wherein the positioning groove (110) is provided at a lower end thereof with a stopper plate (130), the stopper plate (130) being capable of abutting against a lower end of the positioning block (200); the limiting plate (130) is a convex rib which is arranged on the inner side wall of the positioning groove (110) in an inward convex mode.
3. The needle assembly according to claim 1, wherein the positioning recess (300) is formed on an outer sidewall of the positioning block (200), and the positioning recess (300) extends linearly in an up-and-down direction;
or the positioning concave position (300) is arranged on the inner side wall of the positioning groove (110), and the positioning concave position (300) linearly extends along the vertical direction.
4. An injection needle assembly according to claim 1, characterized in that the injection passage (120) includes a tapered portion (121), the tapered portion (121) being gradually reduced in radial area from bottom to top; the lower end of the needle seat (100) is provided with a male head or a female head of a luer connector.
5. A needle assembly according to claim 1, wherein the edge surface (410) of the upper end of the needle tube (400) is inclined in the range of [10 °,20 ° ]; the length of the upper end of the needle tube (400) extending out of the needle seat (100) is [0.5mm,5mm ].
6. A needle assembly according to claim 1, characterized in that four positioning recesses (300) are formed in the positioning block (200) side by side, four needle tubes (400) are disposed in the corresponding positioning recesses (300), the upper ends of the four needle tubes (400) are provided with blade surfaces (410), and the four blade surfaces (410) have the same shape and orientation.
7. Method of needle mounting, characterized in that, applied to the injection needle assembly according to any of claims 1 to 6, it applies a first needle mounting clamp (600) and a second needle mounting clamp (700);
the first needle mounting fixture (600) comprises:
a first base (610);
a first mounting groove (620) provided at an upper end of the first base (610);
a mounting base (630) protruding from the lower end of the first mounting groove (620), the mounting base (630) corresponding to the inner contour of the injection channel (120);
the mounting column (640) is convexly arranged at the upper end of the mounting base (630), a first mounting hole (650) is formed in the upper end of the mounting column (640), and the lower end of the first mounting hole (650) corresponds to the outer contour of the lower end of the needle tube (400);
the second needle mounting jig (700) comprises:
a second base (710);
the second mounting groove (720) is arranged at the lower end of the second base (710), and the second mounting groove (720) corresponds to the outer contour of the upper end of the needle seat (100);
the second mounting hole (730) is arranged at the upper end of the second mounting groove (720), the second mounting hole (730) corresponds to the outer contour of the upper end of the needle tube (400), and the upper end of the second mounting hole (730) is provided with a blade surface (410);
the needle installing method comprises the following steps:
placing the injection needle assembly into the first needle mounting fixture (600), inserting the mounting base (630) into the injection channel (120), inserting the mounting post (640) into the positioning recess (300), and inserting the lower end of the needle tube (400) into the first mounting hole (650);
covering the second needle installing clamp (700) above the first needle installing clamp (600), inserting the upper end of the needle base (100) into the second installation groove (720), and inserting the upper end of the needle tube (400) into the second installation hole (730);
reversing the first needle installing clamp (600) and the second needle installing clamp (700) by 180 degrees, removing the first needle installing clamp (600), shaking the second needle installing clamp (700) to enable a blade surface (410) in the second installation hole (730) to be in contact with one end corresponding to the needle tube (400), and stabilizing the position of the needle tube (400);
injecting glue into the positioning concave position (300) through the glue injection hole (500);
curing;
and removing the second needle mounting fixture (700).
8. The needle mounting method according to claim 7, wherein the injection needle assembly comprises four needle tubes (400), the first mounting hole (650) and the second mounting hole (730) are respectively in one-to-one correspondence with the needle tubes (400), and when the needle tubes (400) are stably positioned, the blade faces (410) of the four needle tubes (400) are oriented in the same direction; the curing is completed by ultraviolet lamp irradiation.
9. Method of needle mounting, applied to the injection needle assembly according to any of claims 1 to 6, using a first needle mounting fixture (600), said first needle mounting fixture (600) comprising:
a first base (610);
a first mounting groove (620) provided at an upper end of the first base (610);
a mounting base (630) protruding from the lower end of the first mounting groove (620), the mounting base (630) corresponding to the inner contour of the injection channel (120);
the mounting column (640) is arranged at the upper end of the mounting base (630) in a protruding mode, a first mounting hole (650) is formed in the upper end of the mounting column (640), the lower end of the first mounting hole (650) corresponds to the outer contour of the lower end of the needle tube (400), and a blade surface (410) is arranged at the lower end of the first mounting hole (650);
the needle installing method comprises the following steps:
placing the injection needle assembly into the first needle mounting fixture (600), inserting the mounting base (630) into the injection channel (120), inserting the mounting post (640) into the positioning recess (300), and inserting the lower end of the needle tube (400) into the first mounting hole (650);
shaking the first needle mounting fixture (600) to enable a blade surface (410) in the first mounting hole (650) to be in contact with one end, corresponding to the needle tube (400), of the needle tube (400) until the position of the needle tube (400) is stable;
injecting glue into the positioning concave position (300) through the glue injection hole (500);
curing;
and removing the first needle mounting clamp (600).
10. The needle mounting method according to claim 9, wherein the injection needle assembly comprises four needle tubes (400), the first mounting holes (650) correspond to the needle tubes (400) in a one-to-one manner, and when the needle tubes (400) are stably positioned, the blade faces (410) of the four needle tubes (400) are oriented in the same direction; the curing is completed by ultraviolet lamp irradiation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210622775.7A CN115154768A (en) | 2022-06-02 | 2022-06-02 | Injection needle assembly and needle mounting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210622775.7A CN115154768A (en) | 2022-06-02 | 2022-06-02 | Injection needle assembly and needle mounting method |
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| Publication Number | Publication Date |
|---|---|
| CN115154768A true CN115154768A (en) | 2022-10-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210622775.7A Pending CN115154768A (en) | 2022-06-02 | 2022-06-02 | Injection needle assembly and needle mounting method |
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| CN (1) | CN115154768A (en) |
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| CN102309797A (en) * | 2011-08-18 | 2012-01-11 | 清华大学 | Disposable micro injection needle and syringe thereof |
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| CN215231116U (en) * | 2021-03-12 | 2021-12-21 | 深圳中科精艺设计有限公司 | Split type upper cover type needle table of multi-needle injection system |
| CN215780970U (en) * | 2021-09-18 | 2022-02-11 | 普昂(杭州)生命科技有限公司 | Miniature injection needle |
| CN215919623U (en) * | 2021-08-09 | 2022-03-01 | 罗清 | Multi-needle injection head auxiliary mounting tool |
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2022
- 2022-06-02 CN CN202210622775.7A patent/CN115154768A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102309797A (en) * | 2011-08-18 | 2012-01-11 | 清华大学 | Disposable micro injection needle and syringe thereof |
| CN207356330U (en) * | 2017-04-17 | 2018-05-15 | 浙江海洋大学东海科学技术学院 | A kind of assembling device of injection needle |
| JP2019180989A (en) * | 2018-04-13 | 2019-10-24 | デンカ生研株式会社 | Jig and production method |
| CN111467611A (en) * | 2020-05-22 | 2020-07-31 | 深圳中科精艺设计有限公司 | Split type multi-needle tube injection device |
| CN215231116U (en) * | 2021-03-12 | 2021-12-21 | 深圳中科精艺设计有限公司 | Split type upper cover type needle table of multi-needle injection system |
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