CN212575458U - Microneedle needle table and injection needle assembly - Google Patents

Abstract

The utility model provides a micro needle platform and an injection needle assembly, wherein the side wall of the micro needle platform is provided with a plurality of needle tube clamping grooves which are parallel to each other and arranged at intervals, and the groove diameter of the needle tube clamping groove is matched with the outer diameter of a needle tube of a micro injection needle; this syringe needle subassembly includes the syringe needle seat, a plurality of miniature syringe needles and micro needle platform, the syringe needle seat has the liquid medicine chamber, the syringe needle seat is equipped with the installation cavity with micro needle platform looks adaptation, miniature syringe needle installs on the needle tube draw-in groove of micro needle platform, micro needle platform installs in the installation cavity, through addding the form that the lateral wall has the micro needle platform of needle tube draw-in groove, in advance with miniature syringe needle installation income needle tube draw-in groove, utilize the pretightning force effect of needle tube draw-in groove, make many pieces of miniature syringe needles can realize fixed mounting in advance at micro needle bench purpose, still can keep unanimous purpose with the opening orientation of the miniature syringe needle after ensureing to install.

Description

Microneedle needle table and injection needle assembly

Technical Field

The utility model relates to a syringe needle field, concretely relates to micro needle platform and syringe needle subassembly.

Background

Intradermal or subcutaneous injection is an injection operation in which a drug is injected below the epidermis and above the subcutaneous tissue layer of the skin, and a needle is not penetrated into subcutaneous fat and muscle tissue, and examples thereof include injection of hyaluronic acid complex solution, injection of amino acids, injection of physiological saline, injection of kaimen vaccine, and skin test injection of penicillin drugs and cephalosporin drugs, and a micro-needle is generally used for such injection.

Because the skin itself has a high density and is also thin, when performing intradermal or subcutaneous injection operation, especially when performing intradermal injection, the injection position is shallow, so that the injection resistance when performing injection operation using a single micro-injection needle is large, although the purpose of reducing the injection resistance can be achieved by mounting a plurality of micro-injection needles on one syringe, the syringe with a plurality of micro-injection needles still cannot be widely used in the existing market, but the reason for this is mainly due to the insufficient mounting accuracy of the micro-injection needles.

At present, the mounting means of installing a plurality of syringe needles on an injection tube is mainly: firstly directly clamping a plurality of injection needles by a manipulator, then inserting the plurality of injection needles into a needle tube seat connected with an injection tube, and then injecting sealing glue into a gap between the needle tube seat and the injection needles to bond the injection needles and the needle tube seat together, because the sealing glue needs time for condensation and the mechanical equipment can generate slight vibration, and in addition, the micro injection needles have small tube diameters (the tube diameters are basically less than 0.5 mm) and are of tubular structures, during the condensation process of the sealing glue, the needle tip openings (namely the inclined plane ends of the needle tips of the injection needles) of the injection needles which are just started to be consistent can generate self deflection or autorotation under the mechanical vibration, so that the problem that the opening orientations of the injection needles are inconsistent after the sealing glue is solidified is caused, because the skin is thin, as shown in figure 1, during the injection operation, if the orientations of a plurality of injection needles 1' are inconsistent, will bring great influence for the injection effect, because partial syringe needle can appear like this and make the liquid medicine can not be injected into the problem in the skin by complete because of failing to puncture entering skin, the liquid medicine can not all get into in the skin, actual injection volume will reduce to some extent, and then the problem that influences injection effect and influence medical treatment appears, and sealed glue can cause the phenomenon of the sealed glue that the pulling is about to condense because of the deflection of syringe needle at the in-process that condenses, thereby the problem of bubble or side opening appears in the sealed glue of emergence, and then cause the liquid medicine side leakage easily when using, so also can appear the liquid medicine can not enter into the problem in the skin through the syringe needle completely, influence product quality.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that in the process of directly clamping the micro injection needle by mechanical equipment, the micro injection needle is inserted into the needle tube seat and injected with sealant, the utility model provides a micro-needle platform and an injection needle assembly, which solves the technical problem that the opening orientation of the installed micro-injection needle is inconsistent due to the self micro-vibration of mechanical equipment, by adding the micro-needle platform with the needle tube clamping groove on the side wall, the micro-injection needle is arranged in the needle tube clamping groove in advance, the aim of fixedly arranging a plurality of micro-injection needles on the micro-needle platform in advance can be realized by utilizing the pretightening force of the needle tube clamping groove, so as to solve the problem that the micro-injection needle deflects due to the micro-vibration of the mechanical equipment when the subsequent mechanical equipment clamps the micro-injection needle, the opening orientation of the installed micro-injection needle can be kept consistent, and the product quality is improved.

One of the purposes of the utility model is to disclose a micro needle platform, one of them lateral wall of micro needle platform is equipped with a plurality of needle tube draw-in grooves, a plurality of the needle tube draw-in grooves are parallel to each other and set up at intervals, the groove diameter of needle tube draw-in groove and the needle tube external diameter looks adaptation of micro syringe needle, before mechanical equipment centre gripping micro needle, earlier fix many micro syringe needles in the needle tube draw-in groove of micro needle platform according to the form of same opening orientation in advance, after micro syringe needle is installed into the needle tube draw-in groove, the cell wall of needle tube draw-in groove provides the pretension clamping force for micro syringe needle tube, make these micro syringe needles can realize fixing the mesh on micro needle platform with the form pretension of same opening orientation, mechanical equipment is when centre gripping micro syringe needle, under the pretension effect of micro needle platform, micro syringe needle can not appear the problem of self deflection or rotation because of the micro vibration of, therefore, the purpose that the opening of the miniature injection needle can still keep the same orientation after the plurality of miniature injection needles are coagulated and fixed on the needle tube seat is achieved, and the product quality of the finished injector is further improved.

In addition, in practical production application, if the fixing form of the micro needle platform is not adopted, when a mechanical device clamps a plurality of micro injection needles, the mechanical device generally clamps the plurality of micro injection needles in a form of tightly arranging the plurality of micro injection needles, after the micro injection needles are clamped into the needle tube seat by the mechanical device in a form of tightly arranging the plurality of micro injection needles, when sealing glue is injected into the needle tube seat, due to the tight arrangement of the micro injection needles, the sealing glue can hardly achieve the purpose of completely filling gaps among the micro injection needles during practical filling, so that when a manufactured syringe finished product is subjected to injection operation, the problem that liquid medicine leaks out from the gaps among the micro injection needles which are not filled with the sealing glue can easily occur, on the contrary, the non-tight contact parallel arrangement form among the micro injection needles is formed by adopting the fixing installation form of the micro needle platform, and the non-tight contact gap between the miniature injection needles is directly blocked and filled by the structure of the miniature needle table, so that the purpose of avoiding the problem that the liquid medicine leaks out from the gap between the miniature injection needles can be realized only by filling the gap between the miniature needle table and the needle tube seat with the sealing glue in the actual use.

Preferably, in the mode of the pipe diameter of the miniature injection needle and the groove diameter of the needle tube clamping groove being matched, the mode of interference fit is preferably adopted, namely the miniature injection needle and the needle tube clamping groove are in interference fit, after the miniature injection needle is installed into the needle tube clamping groove, the groove wall of the needle tube clamping groove can generate pre-tightening clamping force on the miniature injection needle, so that the purpose of clamping the miniature injection needle is realized, the problem that the miniature injection needle deflects or rotates automatically in the installation process is avoided, and the product quality is improved.

Furthermore, the distance between any one needle tube clamping groove and the adjacent needle tube clamping groove is 0.8mm-2.0 mm.

Furthermore, a plurality of the needle tube clamping grooves all comprise a top needle tube clamping groove section and a bottom needle tube clamping groove section, the top needle tube clamping groove section is arranged on the side wall of the micro needle platform along the extending direction of the bottom needle tube clamping groove section, the corresponding top needle tube clamping groove section and the bottom needle tube clamping groove section are both used for installing the same micro injection needle, the top needle tube clamping groove section is used for installing and clamping the middle upper part of the needle tube of the micro injection needle, the bottom needle tube clamping groove section is used for installing and clamping the lower part of the needle tube of the micro injection needle, the micro injection needle is installed in a clamping mode through a two-section mode, the structural stability of the micro injection needle during pre-tightening installation is favorably improved, and the problem that the micro injection needle deflects in the installation process is avoided.

Furthermore, the needle tube clamping grooves are formed in the side wall, facing the skin, of the micro needle table, and when the intradermal injection operation is performed, the micro injection needle is generally used for performing the injection operation in a mode that the micro injection needle is inclined or the needle tube is close to the skin, so that the needle tube clamping grooves are formed in the side wall, facing the skin, of the micro needle table, and the function of reducing the distance between the needle tube of the micro injection needle and the skin as far as possible can be achieved, and the injection operation is convenient to perform.

Further, the micro needle platform is the cuboid structure, the needle tubing draw-in groove is in follow on the lateral wall of micro needle platform the length direction of micro needle platform sets up, and the micro needle platform of cuboid structure is when carrying out the injection operation, because of its six faces all is the plane for fixed mounting just is equal with the distance between the skin side by side the micro-syringe needle that sets up towards on the lateral wall of skin, in order to ensure that many pieces of micro-syringe needle all can contact skin simultaneously and carry out the injection operation.

Further, the number of the needle tube clamping grooves is one to five, and when the number of the needle tube clamping grooves exceeds five, the problem that pain of a patient is rapidly increased easily occurs in an injector with more than five micro-injection needles when a produced injector finished product is subjected to injection operation, so that the number of the needle tube clamping grooves is one to five, specifically, four is preferred.

Further, the cell wall of needle tubing draw-in groove is semicircle form or major arc form, improves the assembly adaptability between needle tubing draw-in groove and the micro syringe needle, and preferred adoption major arc form can play the better effect of holding the micro syringe needle card, and further, the cell wall top of needle tubing draw-in groove is equipped with the radius, at the in-process that adopts the mode of pressing to pack micro syringe needle into the needle tubing draw-in groove, when micro syringe needle pushes up the notch of needle tubing draw-in groove, the radius plays the effect that the micro syringe needle of being convenient for expands the notch of needle tubing draw-in groove temporarily, and after micro syringe needle packed into the needle tubing draw-in groove, the notch can be at the resilient effect of self original state down to realize the purpose of holding micro syringe needle.

Another object of the utility model is to disclose a syringe needle subassembly, including syringe needle seat and a plurality of miniature syringe needle that is used for connecting the liquid medicine injection tube, the syringe needle seat has the liquid medicine chamber, still include as above miniature syringe needle platform, the syringe needle seat be equipped with the installation cavity of miniature syringe needle platform looks adaptation, the installation cavity intercommunication the liquid medicine chamber, miniature syringe needle installs miniature syringe needle platform on the needle tubing draw-in groove, miniature syringe needle platform is installed in the installation cavity.

Furthermore, be equipped with gluey groove on the miniature syringe needle platform, gluey groove sets up in the miniature syringe needle platform with towards skin the lateral wall adjacent or relative lateral wall on, be equipped with on the chamber wall of installation cavity with gluey groove assorted needle platform dop, the needle platform dop sets up in the gluey groove, be equipped with the boosting inclined plane on the top surface of needle platform dop.

Furthermore, a skin-sticking inclined plane is arranged on one outer side wall of the top of the needle tube seat, the included angle between the skin-sticking inclined plane and the outer side wall is 5-45 degrees, when the injection needle assembly is used for intradermal injection, medical staff only need to stick the skin-sticking inclined plane to the skin of a patient, the purpose of controlling the puncture angle between the micro injection needle and the skin can be realized, the medical staff can conveniently use the injection needle assembly, the skin-sticking inclined plane and the top surface of the needle tube seat form a skin hump boosting structure for assisting in pushing up the skin hump, when injection operation is carried out, the skin-sticking inclined plane is firstly stuck to the skin, then the injection needle assembly is pushed towards the micro injection needle, then the skin on the direction of the micro injection needle can be wrinkled to form the skin hump under the propping and blocking effect of the top surface of the needle tube seat, and the end of the micro injection needle is, therefore, in the process of forming the skin dome, the micro injection needle can complete intradermal or subcutaneous puncture, so that the skin dome boosting structure can play a role in assisting medical personnel in lifting the skin dome and completing intradermal or subcutaneous puncture, and is quick and efficient.

Further, on the needle tube seat with have be equipped with the sign wing on the lateral wall adjacent or relative lateral wall on the subsides skin inclined plane, be equipped with the sign wing on the lateral wall adjacent or relative lateral wall adjacent with this lateral wall that has the subsides skin inclined plane promptly, on the one hand, the sign wing can play the purpose that medical personnel of being convenient for held this base, on the other hand, design the sign wing on the lateral wall on the no subsides skin inclined plane, can also play the effect that medical personnel of being convenient for judge the concrete lateral wall that the subsides skin inclined plane was located fast, medical personnel of being convenient for will paste the skin inclined plane and laminate on patient's skin fast.

Further, the distance between the top end of the opening of the miniature injection needle and the top surface of the needle tube seat is 0.8mm-2.5 mm.

The utility model has the advantages that: through the pretightning force effect of the needle tubing draw-in groove of micro-needle platform lateral wall department to micro-injection needle, micro-injection needle can not appear the problem of micro-injection needle self deflection or rotation because of the micro-vibration of mechanical equipment self in the installation, thereby realize fixing many pieces of micro-injection needle on the needle tube seat after condensing, micro-injection needle's opening still can keep the unanimous purpose of orientation, and then improve the off-the-shelf product quality of syringe, set up micro-injection needle interval installation at micro-needle platform, separation filling effect through micro-needle card platform self structure, the problem that the liquid medicine spills in the clearance of not being filled by sealing glue between the micro-injection needle has been avoided appearing, the leakproofness of this syringe needle subassembly has been improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a schematic view of an injection operation when the orientations of a plurality of injection needles are not identical;

fig. 2 is a schematic structural view of a microneedle needle holder according to the present invention;

FIG. 3 is a schematic bottom view of FIG. 2;

fig. 4 is a schematic structural view of a needle assembly according to the present invention;

fig. 5 is an exploded view of a needle assembly of the present invention;

FIG. 6 is a schematic structural view of the needle tube seat of the present invention

FIG. 7 is a schematic front view of FIG. 4;

fig. 8 is a state view of the injection needle assembly in use during an injection operation.

The attached drawings are as follows: 1', an injection needle; 1. a microneedle needle holder; 2. a needle tube clamping groove; 3. a miniature injection needle; 4. a needle tube base; 5. a top needle tube snap groove section; 6. a bottom needle tube snap groove section; 7. rounding; 8. a mounting cavity; 9. skin; 10. a glue groove; 11. a needle table chuck; 12. a boosting slope; 13. sticking a skin inclined plane; 14. a skin dune; 15. identifying a wing; 16. a liquid medicine injection tube; 17. a notch.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 2 and 3, a micro needle platform, wherein a side wall of the micro needle platform 1 is provided with a plurality of needle tube slots 2, the needle tube slots 2 are arranged in parallel and at intervals, the slot diameters of the needle tube slots 2 are matched with the outer diameters of needle tubes of micro injection needles 3, before a mechanical device clamps the micro injection needles 3, a plurality of micro injection needles 3 are fixed in the needle tube slots 2 of the micro needle platform 1 in advance in the same opening direction, after the micro injection needles 3 are installed in the needle tube slots 2, the slot walls of the needle tube slots 2 provide pre-tightening clamping force for the micro injection needles 3, so that the micro injection needles 3 can be pre-tightened and fixed on the micro needle platform 1 in the same opening direction, when the mechanical device clamps the micro injection needles 3, the micro injection needles 3 cannot generate self-deflection or self-rotation due to the self-vibration of the mechanical device under the pre-tightening force of the micro needle platform 1, therefore, the purpose that the opening of the micro-injection needle 3 can still keep the same orientation after the plurality of micro-injection needles 3 are coagulated and fixed on the needle tube seat 4 is achieved, and the product quality of the finished syringe is further improved.

In addition, in practical production application, if the fixing form of the micro needle platform 1 is not adopted, when a mechanical device clamps a plurality of micro injection needles 3, the mechanical device generally clamps the plurality of micro injection needles in a tightly arranged form, after the micro injection needles are clamped into the needle tube seat by the mechanical device in the tightly arranged form, when sealing glue is injected into the needle tube seat, due to the tight arrangement of the micro injection needles, the sealing glue can hardly achieve the purpose of completely filling gaps among the micro injection needles during practical filling, so that when a manufactured syringe finished product is subjected to injection operation, the problem that liquid medicine leaks out from the gaps among the micro injection needles which are not filled with the sealing glue can easily occur, and on the contrary, the micro injection needles 3 are in a non-tight contact parallel arrangement form by adopting the fixing and mounting form of the micro needle platform 1, and the clearance of non-close contact between the micro-injection needles 3 is directly blocked and filled by the structure of the micro-needle platform 1, so that the sealing glue can be used for avoiding the problem that the liquid medicine leaks out from the clearance between the micro-injection needles 3 only by filling the clearance between the micro-needle platform 1 and the needle tube seat 4 in the actual use.

Preferably, in the mode of the pipe diameter of the micro-injection needle 3 and the groove diameter of the needle tube clamping groove 2, the interference fit mode is preferably adopted, namely, the micro-injection needle 3 and the needle tube clamping groove 2 are in interference fit, after the micro-injection needle 3 is installed into the needle tube clamping groove 2, the groove wall of the needle tube clamping groove 2 can generate pre-tightening clamping force for the micro-injection needle 3, the purpose of clamping the micro-injection needle 3 is achieved, the problem that the micro-injection needle 3 deflects or rotates in the installation process is avoided, and the product quality is improved.

Preferably, the distance between any one needle tube clamping groove 2 and the adjacent needle tube clamping groove 2 is 0.8mm-2.0mm, when performing intradermal or subcutaneous injection operation, because a plurality of micro-injection needles 3 are arranged at intervals, therefore, in order to avoid the distance between the needle puncture wounds of each micro-injection needle 3 from being too close to cause the plurality of needle puncture wounds to be broken and connected to form a large-caliber puncture wound, and further the problem of injection failure caused by the liquid medicine flowing out of the skin occurs, the distance between any one needle tube clamping groove 2 and the adjacent needle tube clamping groove 2 is preferably set to be greater than or equal to 0.8mm, when the distance is greater than 2.0mm, the product structure size is too large, which is not beneficial to production, the needle tube clamping grooves 2 arranged at intervals are also beneficial to the diffusion of the liquid medicine during injection.

Preferably, the needle tube clamping grooves 2 each include a top needle tube clamping groove section 5 and a bottom needle tube clamping groove section 6, the top needle tube clamping groove section 5 is arranged on the side wall of the micro needle platform 1 along the extending direction of the bottom needle tube clamping groove section 6, the corresponding top needle tube clamping groove section 5 and the corresponding bottom needle tube clamping groove section 6 are both used for installing the same micro injection needle 3, the top needle tube clamping groove section 5 is used for installing and clamping the middle-upper pipe section of the needle tube of the micro injection needle 3, the bottom needle tube clamping groove section 6 is used for installing and clamping the lower pipe section of the needle tube of the micro injection needle 3, the micro injection needle 3 is clamped and installed in a two-section mode, which is beneficial to improving the structural stability of the micro injection needle 3 during pre-tightening installation and avoids the deflection problem of the micro injection needle 3 during installation.

Preferably, a plurality of needle tube locking grooves 3 are formed on the side wall of the microneedle table 1 facing the skin, and the microneedle 3 is generally operated in a tilted state or in a state that the needle tube is pressed close to the skin when the intradermal injection is performed, so that the needle tube locking grooves 2 are formed on the side wall of the microneedle table 1 facing the skin to reduce the distance between the needle tube of the microneedle 3 and the skin as much as possible, thereby facilitating the injection.

Preferably, the microneedle needle table 1 is of a cuboid structure, the needle tube clamping groove 2 is formed in the side wall of the microneedle needle table 1 along the length direction of the microneedle needle table 1, and the microneedle needle table 1 of the cuboid structure is flat in six faces during injection operation, so that distances between the microneedle needles 3 which are fixedly installed on the side wall facing the skin and are arranged side by side and the skin are equal, and the multiple microneedle needles 3 can be ensured to simultaneously contact the skin and perform injection operation.

Preferably, the number of the needle tube slots 2 is one to five, and when the number of the needle tube slots 2 exceeds five, the problem that the pain of the patient is rapidly increased easily occurs in the produced syringe product with more than five micro-injection needles 3 during the injection operation, so that the number of the needle tube slots 2 is one to five, specifically, in the embodiment, four is preferred.

Particularly, for the injector with only one micro-injection needle, the injector is also clamped and installed by a mechanical arm of mechanical equipment in the traditional installation mode, because the diameter of the micro-injection needle is small, the micro-injection needle can be installed in a mode of clamping a micro-needle platform in the installation process, and the clamping and installation operation of the micro-injection needle with the small diameter is replaced.

In addition, since the skin is thin, when the micro-needle is used for intradermal injection, as shown in fig. 1 and 8, the injection effect is optimized when the micro-needle is used for puncturing the skin with the needle point opening (i.e., the inclined end of the needle point) facing away from the skin, and therefore, particularly, in the case of an injector having a specific shape for medical staff to operate, even if the injector has only one micro-needle, the opening direction of the micro-needle is strictly required.

Preferably, referring to fig. 3, the groove wall of the needle tube slot 2 is semicircular or major arc, so as to improve the assembly adaptability between the needle tube slot 2 and the micro-injection needle 3, and preferably, the major arc is adopted, so as to play a better role in clamping the micro-injection needle, and further, the top end of the groove wall of the needle tube slot 2 is provided with a radius 7, in the process of installing the micro-injection needle 3 into the needle tube slot 2 in a pressing manner, when the micro-injection needle 3 pushes against the notch 17 of the needle tube slot 2, the radius 7 plays a role in facilitating the micro-injection needle 3 to temporarily widen the notch 17 of the needle tube slot 2, and after the micro-injection needle is installed into the needle tube slot 2, the notch 17 can restore to the original shape under the action of its own elasticity, so as to achieve the purpose of.

Referring to fig. 4 to 8, a syringe needle assembly comprises a syringe seat 4 and a plurality of micro-syringe needles 3 for connecting a liquid medicine injection tube 16, wherein the syringe seat 4 has a liquid medicine cavity for communicating the liquid medicine injection tube 16, the syringe needle assembly further comprises the micro-syringe needle platform 1 as described above, the syringe seat 4 is provided with an installation cavity 8 matched with the micro-syringe needle platform 1, the installation cavity 8 is communicated with the liquid medicine cavity, the micro-syringe needles 3 are installed on a syringe slot 2 of the micro-syringe needle platform 1, the micro-syringe needle platform 1 is installed in the installation cavity 8, the openings of the micro-syringe needles 3 on the mounted syringe needle assembly can realize the purpose of the same orientation through the pre-tightening force of the micro-syringe needle platform 1, the product quality is ensured, the syringe slot 2 is arranged on the side wall of the micro-syringe needle platform 1, the distance between the syringe needle of the micro-syringe needles 3 and the skin 9 can be reduced as much as possible, so as, install 3 intervals of miniature syringe needle and set up on miniature needle platform 1, the separation filling effect through miniature needle card platform 1 self structure, the problem that the liquid medicine spills in the clearance of not being filled by sealed glue between miniature syringe needle 3 has been avoided appearing, the leakproofness of this syringe needle subassembly has been improved, further ensure product quality, when carrying out intradermal or hypodermic operation, parallel arrangement's many pieces of miniature syringe needle 3 just can play the effect toward intradermal or hypodermic liquid medicine simultaneously, in order to realize reducing the purpose of injection resistance, and then realize reducing the mesh of the operation degree of difficulty of intradermal or hypodermic, in order to improve injection efficiency.

Preferably, referring to fig. 2 and 6, a glue groove 10 is formed on the microneedle needle holder 1, the glue groove 10 is formed in a side wall of the microneedle needle holder 1 adjacent to or opposite to a side wall facing the skin, a needle holder 11 matched with the glue groove 10 is formed on the wall of the mounting cavity 8, the needle holder 11 is disposed in the glue groove 10, a thrust-assisting inclined surface 12 is formed on the top surface of the needle holder 11, and the thrust-assisting inclined surface 12 can play a role of facilitating pushing the needle holder 11 into the glue groove 10 during mounting.

Preferably, referring to fig. 7, a skin-contacting slant 13 is provided on one of the outer side walls of the top of the needle holder 4, an included angle a between the skin-contacting slant 13 and the outer side wall is 5 ° to 45 °, when the needle assembly is used for intradermal injection, a medical worker can control the puncture angle between the micro-needle 3 and the skin 9 by only contacting the skin-contacting slant with the skin 9 of a patient, and the needle assembly is convenient for the medical worker to use, the skin-contacting slant 13 and the top surface of the needle holder 4 form a skin-hump boosting structure for assisting to push up the skin hump 14, when performing injection, the skin-contacting slant 13 contacts the skin, then the needle assembly is pushed towards the micro-needle 3, and then the skin 9 in the direction of the micro-needle 3 is wrinkled and raised to form the skin hump 14 under the supporting and blocking effect of the top surface of the needle holder 4, and since the puncture end of the micro-hump is located at the front end of, therefore, in the process of forming the skin dome, the micro injection needle 3 can complete intradermal or subcutaneous puncture, so that the skin dome boosting structure can play a role in assisting medical personnel in lifting the skin dome and completing intradermal or subcutaneous puncture, and is quick and efficient.

Preferably, be equipped with the sign wing 15 on the lateral wall adjacent with the lateral wall that has skin-facing inclined plane 13 or relative lateral wall on the needle tubing seat 4, be equipped with the sign wing 15 on the lateral wall adjacent with this lateral wall that has skin-facing inclined plane 13 or relative lateral wall promptly, on the one hand, sign wing 15 can play the purpose of being convenient for medical personnel to hold this needle tubing seat 4, on the other hand, design sign wing 15 on the lateral wall that does not have skin-facing inclined plane 13, can also play the effect that medical personnel of being convenient for judge the concrete lateral wall that skin-facing inclined plane 13 locates fast, medical personnel of being convenient for will paste skin inclined plane 13 fast and laminate on patient's skin.

Preferably, the distance between the open top end of the micro-injection needle 3 and the top surface of the needle holder 4 is 0.8mm-2.5mm, when the protruding length of the micro-injection needle 3 is less than 0.8mm, the problem of over shallow injection is likely to occur when the micro-injection needle penetrates into the skin, and when the protruding length is more than 2.5ml, the problem of over deep penetration of the micro-injection needle 3 into the subcutaneous adipose tissue is likely to occur.

This syringe needle subassembly can play the theory of operation that reduces the injection resistance effect when the injection: generally, when a certain amount of liquid medicine is injected into the skin, the injection pressure generated by injecting the liquid medicine into the skin or the skin in the form of one injection point is far greater than the sum of the injection pressures generated by adopting multipoint distributed injection, for example, when the amount of the intradermal injection agent is 0.1ml, a single injection site is used to inject the agent intradermally, the injection pressure generated by the injection needle assembly is larger than the sum of the injection pressures generated when 0.025ml of liquid medicine is injected into 4 injection points respectively, so that the injection needle assembly of a plurality of micro injection needles arranged at intervals is adopted, when the injection device is used, the injection resistance of medical workers can be reduced, the injection device can also expand the injection sectional area of the miniature injection needle due to the fact that the injection is carried out simultaneously during injection, and the multipoint simultaneous injection can also be beneficial to liquid medicine diffusion, so that the purpose of improving the injection efficiency is achieved.

Mounting process of microneedle stand and injection needle assembly: firstly, a plurality of micro-injection needles 3 are arranged in a needle tube clamping groove 2 of a micro-needle platform 1 one by one or at one time in a mode of consistent opening orientation, then the needle points of the micro-injection needles 3 are adjusted and aligned, then the micro-needle platform 1 is clamped by a mechanical arm of mechanical equipment, the micro-needle platform 1 is inserted into an installation cavity of a needle tube seat 4, then the micro-needle platform 1 is pressed, a needle platform chuck 11 is embedded into a rubber groove 10 of the micro-needle platform 1 to realize the purpose of installing and fixing the micro-injection needles 3, finally, sealing glue is injected into a gap between the micro-needle platform 1 and the needle tube seat 4, after the sealing glue is solidified, the injection needle assembly can be completely installed, and then the injection operation can be carried out only by arranging the needle tube seat 4 on a liquid medicine injection tube 16.

Specifically, in the installation mode of installing the micro-injection needle 3 on the micro-needle table 1, the micro-injection needle 3 can be installed into the needle tube slot 2 from the notch 17 of the needle tube slot 2 in a pressing mode, and the micro-injection needle 3 can be inserted into the needle tube slot 2 from the end opening of the needle tube slot 2 in a mode of inserting the openings at the two ends of the needle tube slot 2, so that the purpose of installing the micro-injection needle 3 is achieved.

In addition, because the tube diameter of the needle tube of the micro-injection needle 3 is relatively small, in practical production application, the inclined plane at the needle point is often finished by polishing, therefore, in the installation mode of realizing the consistent opening orientation of the micro-injection needle 3, except for adopting the mode of arranging a plurality of micro-injection needles 3 into the needle tube clamping groove 2 one by one or in the consistent opening orientation mode, in the embodiment, the mode of not polishing the inclined plane of the needle point can be adopted, namely, the micro-injection needle 3 is firstly installed and fixed into the needle tube clamping groove 2, then the micro-needle table 1 and the micro-injection needles 3 thereon are taken as a whole to a polisher, and the needle point is uniformly polished, so that the purpose of uniformly orienting the openings of the plurality of micro-injection needles 3 can be realized.

The beneficial effects of this embodiment: through the pretightning force effect of the needle tubing draw-in groove of micro-needle platform lateral wall department to micro-injection needle, micro-injection needle can not appear the problem of micro-injection needle self deflection or rotation because of the micro-vibration of mechanical equipment self in the installation, thereby realize fixing many pieces of micro-injection needle on the needle tube seat after condensing, micro-injection needle's opening still can keep the unanimous purpose of orientation, and then improve the off-the-shelf product quality of syringe, set up micro-injection needle interval installation at micro-needle platform, separation filling effect through micro-needle card platform self structure, the problem that the liquid medicine spills in the clearance of not being filled by sealing glue between the micro-injection needle has been avoided appearing, the leakproofness of this syringe needle subassembly has been improved.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A micro needle table is characterized in that a plurality of needle tube clamping grooves are formed in one side wall of the micro needle table, the needle tube clamping grooves are arranged in parallel at intervals, and the groove diameters of the needle tube clamping grooves are matched with the outer diameter of a needle tube of a micro injection needle.

2. The microneedle needle bed according to claim 1, wherein said plurality of needle cannula slots each comprise a top needle cannula slot section and a bottom needle cannula slot section, said top needle cannula slot section being disposed on a side wall of said microneedle needle bed along an extension of said bottom needle cannula slot section.

3. The microneedle needle holder as claimed in claim 1, wherein said microneedle needle holder is a rectangular parallelepiped structure, and said needle tube engaging grooves are formed on a side wall of said microneedle needle holder in a longitudinal direction of said microneedle needle holder.

4. The microneedle needle holder of claim 1, wherein a plurality of said needle cannula slots are provided in a skin facing side wall of said microneedle needle holder.

5. The microneedle needle holder of claim 1, wherein said number of needle cannula slots is one to five.

6. A microneedle needle holder as claimed in any one of claims 1 to 5, wherein the walls of the needle channel are semicircular or arcuate.

7. An injection needle assembly, comprising a needle tube seat for connecting a liquid medicine injection tube and a plurality of miniature injection needles, wherein the needle tube seat is provided with a liquid medicine cavity, and the injection needle assembly is characterized by further comprising the miniature needle platform as claimed in any one of claims 1 to 6, the needle tube seat is provided with a mounting cavity matched with the miniature needle platform, the mounting cavity is communicated with the liquid medicine cavity, the miniature injection needles are mounted on the needle tube clamping grooves of the miniature needle platform, and the miniature needle platform is mounted in the mounting cavity.

8. A needle assembly according to claim 7, wherein the microneedle needle holder is provided with an adhesive groove in the microneedle needle holder, said adhesive groove being provided in a side wall of the microneedle needle holder adjacent to or opposite to the skin-facing side wall, and a needle holder engaging with said adhesive groove is provided in the wall of the mounting cavity, said needle holder being disposed in said adhesive groove.

9. The needle assembly of claim 7 wherein said needle hub has a skin engaging bevel on one of the outer side walls of the top portion, said skin engaging bevel being angled from 5 ° to 45 ° relative to said outer side wall, said skin engaging bevel and said top surface of said needle hub forming a skin-bump assist structure for assisting in lifting a skin-bump.

10. The needle assembly of claim 9 wherein said needle hub has an identification wing on an outer sidewall adjacent to or opposite said skin engaging beveled sidewall.

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