CN203408309U - Disposable multi-needle tube injection needle and prefilled injector comprising same - Google Patents
Disposable multi-needle tube injection needle and prefilled injector comprising same Download PDFInfo
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- CN203408309U CN203408309U CN201320434461.0U CN201320434461U CN203408309U CN 203408309 U CN203408309 U CN 203408309U CN 201320434461 U CN201320434461 U CN 201320434461U CN 203408309 U CN203408309 U CN 203408309U
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Abstract
The utility model relates to the technical field of medical instruments, in particular relates to a disposable multi-needle tube injection needle and a prefilled injector comprising the same. The disposable multi-needle tube injection needle comprises a needle seat, needle tube fixing pieces, a positioning structure and at least two needle tubes; the needle tubes pass through through-holes in the top cover of the needle seat and are fixedly arranged on the top cover of the needle seat dispersedly through the needle tube fixing pieces; the needle tube fixing pieces are fixed in the positioning structure; the two ends of each needle tube are provided with needle tips; insulin can be injected subcutaneously at the same time in a dispersed way by piercing the injection needle vertically; the injection time is short; the insulin can be well absorbed; localized subcutaneous fat hyperplasia and induration caused by long-time accumulation of the insulin because of injecting by a single needle tube can be avoided; injection alternation is facilitated; the structure and the manufacturing process are simple; the cost is low; the risk that the needle cannot be used because a single liquid taking needle tube is blocked in a piercing process is reduced; the injection reliability is improved.
Description
Technical field
This utility model relates to technical field of medical instruments, relates in particular to a kind of injection needles head and comprises the prefilled syringe of this injection needle.
Background technology
Injection technique, injection device are being played the part of key player in treating diabetes, even, with selection insulin preparation no less important, concern the success or failure of glycemic control.A lot of medical personnel usually ignore the impact of injection technique on glycemic control itself with the diabetics of accepting injection of insulin.Clinician often can consider not reach from insulin preparation, Blood glucose self-monitoring equal angles the reason of expection glycemic control target; but having ignored the impact on glycemic control of injection technique and injection device, is a very important link and insulin enters by injection device the process playing a role in human body.Due to absorption the there are differences property of partes corporis humani position to insulin, injection of insulin is to subcutaneous or Musclar layer, and its absorption rate exists very big-difference, and the muscle of resting state and kinestate also has very large variation to absorption of insulin situation.Improve insulin injection device and optimize injection of insulin technology, comprising the needle tubing of selecting suitable number and length, noting correct injection maneuver, rotation injection site, standard ground, avoids intramuscular injection etc., and these are significant to obtaining good glycemic control.
Injection needle in existing ordinary syringe all only has a needle tubing, because syringe size is large, (length is greater than 15 millimeters conventionally, external diameter is greater than 0.35 millimeter conventionally), be very suitable for the intramuscular injection of heavy dose of medicinal liquid, be not suitable for per injection amount seldom but subcutaneous injection to the very high medicinal liquids such as insulin of accuracy of dose requirement.In injection of insulin field, because insulin injection pen has simple and convenient and easy to study, dosage accurately, pain obviously reduces, imitates the advantages such as good while facilitating durable, injection, now by diabetics, adopted widely.One end of various commercially available insulin injection pens is all provided with injection memorizer now, during use, need use the column jacket casing of injection needle on the interface of injection memorizer in disposable pen, meanwhile the needle tubing in column cylinder can pierce through the elastic layer of injection top of memory to extract medicinal liquid.Current insulin injection pen, with all only having a needle tubing on injection needle, is compared with normal injection syringe needle, is only needle tubing thinner (external diameter is 0.23-0.33mm), for thrusting the needle tubing length shorter (5-12.8mm) of skin.
As can be seen here, in existing injection of insulin technology, on each syringe needle, only has a needle tubing, the in the situation that of the same dosage of injection, medicament is all concentrated and is injected at same position, be subject to epidermis can cause obviously increase inject time to the restriction of medicinal liquid absorption rate, because insulin itself is kind of a somatomedin, insulin will inevitably cause this position subcutaneous fat hypertrophy and produce scleroma gathering for a long time of injection site.Injection here more from now on, the absorbance of insulin will obviously decline, and the performance that must affect drug effect causes the unstable of glycemic control.In practical operation, because inject subcutaneous medicinal liquid, in the short time, fail to spread completely and absorption, often have medicinal liquid and ooze from pinprick, cause leakage, so just cannot guarantee the accuracy of therapeutic dose.
China's injection of insulin state of the art survey result shows, approximately has 31.1% patient infusion position to occur lump, wherein ninety percent occurs in abdominal part, but still has patient to be chosen in the injection of adipose hyperplasia position.In fact, the position that human body is applicable to insulin injection is abdominal part only not, and the positions such as large leg outer side, arm 1/4 place, outside and buttocks can.Because treatment phase of diabetics is very long and all inject every day 3 to 4 times, requirement must have higher subcutaneous absorption rate and concordance thereof to guarantee injection site as far as possible by rotation insulin injection between abdominal part, arm, thigh, buttocks, so just can guarantee curative effect, avoid the probability developing complications.Yet, because the needle tubing on existing injection needle is all longer, for avoiding intramuscular injection to adopt, pinch the injection skills such as skin, inclination needle tubing, and when arm, buttock injections, patient just inconvenience adopts above-mentioned injecting method, this namely many patients be only chosen in the basic reason of abdomen injection.
Pain during injection can obviously increase with the degree of depth of thrusting, and especially infant is forbidding still can to allow many patients.Owing to only having a needle tubing on each syringe needle, the in the situation that of the same dosage of injection, the needle tubing length degree of depth shorter, that thrust is more shallow, although can reduce pain, but be subject to epidermis can cause obviously increase inject time to the restriction of medicinal liquid absorption rate, and insulin will inevitably cause this position subcutaneous fat hypertrophy and produce scleroma gathering for a long time of injection site.
Above-mentioned factor can be brought much inconvenience to patient undoubtedly, and To know is easy, but to do is difficult, has reduced patient and has adopted correct method to carry out the compliance of injection for curing, and affected the treatment.
In addition, the injection needles head on existing insulin injection pen must support the use by bound insulin injection pen, separately deposits at ordinary times, during use, fits together temporarily again, and whole injection device volume and weight are larger, and are only applicable to insulin injection.
At present, " the disposable array miniature injection needle head " that Chinese utility model patent number is ZL201110317397.3 adopts one to get the structure that liquid pin converts many micropins to through micro-cavities and can solve more above-mentioned problems, and the method being installed on insulin injection pen is identical with syringe needle with existing commercially available novopen, but its structure and manufacturing process are comparatively complicated, cause cost also higher.
Therefore,, for above deficiency, this utility model provides a kind of disposable spininess pipe injection needle and has comprised the prefilled syringe of this injection needle.
Utility model content
(1) technical problem that will solve
The purpose of this utility model is to provide a kind of disposable spininess pipe injection needle, the injection existing when on the one hand solving existing novopen and using with injection needles head subcutaneous too concentrate to cause absorbing slowly, easily make the subcutaneous generation scleroma in injection site, easy-to-leak liquid, inject time length and awkward problem, solve on the other hand the problem that the structure of existing array injection needle existence and complex manufacturing technology and cost are higher simultaneously.
Another object of the present utility model is to provide a kind of prefilled syringe that comprises this disposable spininess pipe injection needle to improve injection application portability.
(2) technical scheme
In order to solve the problems of the technologies described above, this utility model provides a kind of disposable spininess pipe injection needle, it comprises needle stand, needle tubing fixture, location structure and at least two needle tubings, described needle stand is an end opening, the other end has the column cylinder of top cover, on the top cover of described needle stand, offer through hole, described needle tubing passes the through hole on the top cover of described needle stand and is fixedly installed on dispersedly on the top cover of described needle stand by described needle tubing fixture, described location structure is arranged on the top cover of described needle stand or/and under top cover, described needle tubing fixture is fixed in described location structure, the two ends of described needle tubing have needle point.
Wherein, described needle tubing fixture comprises substrate portion, and described substrate portion is fixed in described location structure.
Wherein, described needle tubing fixture also comprises the filling part being connected with described substrate portion, and described filling part stretches into or pass the through hole of described top cover.
Wherein, described location structure is location double wall, and the inner surface of described location double wall has groove for clamping the substrate portion of described needle tubing fixture.
Wherein, the number of described needle tubing and described through hole is consistent, and described in each, needle tubing is positioned among each through hole and is array and distributes.
Wherein, the normal direction of the liquid outlet of at least two described needle points is different.
Wherein, at least two partial-length differences that needle tubing stretches out described location structure.
Wherein, the substrate portion of described needle tubing fixture be polymer with the material of filling part or be sqtructural adhesive or the substrate portion of described needle tubing fixture in the position that contacts with needle tubing be filled with structural adhesive, the material at other position of substrate portion is polymer, and the material of the filling part of described needle tubing fixture is structural adhesive.
Wherein, it is 0.2mm～4mm for the length of part of skin puncture injection that described needle tubing stretches out described location structure, it is 0.5mm～15mm for extracting the length of the part of injection that described needle tubing is positioned at described column cylinder, the external diameter of described needle tubing is 60um～450um, and internal diameter is 30um～250um.
Wherein, the location structure on the top cover of described needle stand is arranged with needle tube protecting sleeve outward, and described needle stand and needle tube protecting sleeve are arranged with needle stand protective sleeve outward, and the opening part of described needle stand protective sleeve bottom is provided with sealing material layer.
This utility model also provides a kind of prefilled syringe that comprises above-mentioned disposable spininess pipe injection needle, it also comprises the injection memorizer matching with the inwall of described column cylinder, described injection memorizer comprises cylindrical shell, elastomer layer and piston, the top of described cylindrical shell and bottom are equipped with on opening and cylindrical shell and are provided with containing mark, described elastomer layer is positioned at the top of cylindrical shell for the opening at sealed cylinder top, described piston is arranged on the bottom of described cylindrical shell, the bottom of described cylindrical shell is also connected with bending segment, the free end of described bending segment is connected or clamping with the outer wall thread of described column cylinder.
(3) beneficial effect
Technique scheme tool of the present utility model has the following advantages: the disposable spininess pipe injection needle that this utility model provides makes a plurality of needle tubings directly pass the through hole on described needle stand top cover and be fixedly installed on dispersedly on the top cover of described needle stand by described needle tubing fixture, all there is needle point at the two ends of needle tubing, be respectively used to get liquid and injection, can the insulin of doses be injected subcutaneous simultaneously dispersedly like this, inject time is short, be conducive to the absorption of insulin, no leakage, can effectively avoid injection site subcutaneous fat hypertrophy and produce scleroma, structure and the manufacturing process of this disposable spininess pipe injection needle are simple simultaneously, with low cost, and reduced syringe needle because the single liquid needle tubing of getting is in the out of use risk of piercing process obstruction, improved the reliability of injection, due to needle tubing, to stretch out described location structure shorter for the length of part of skin puncture injection, the regular injection skills such as skin, needle tubing inclination can be considered to pinch, can in a plurality of effective injection site injections such as arm, thigh, abdominal part, intramuscular injection needn't be worried to cause very easily, the prefilled syringe that this utility model embodiment provides is combined disposable spininess pipe injection needle and injection bin, use more conveniently, device small volume and less weight, and is not limited to injection of insulin, also go for other drug injection, application prospect is more extensive.
Accompanying drawing explanation
Fig. 1 is the structure cutaway view of disposable spininess pipe injection needle in this utility model embodiment 1;
Fig. 2 is the structure cutaway view of locating the double wall disposable spininess pipe injection needle different from Fig. 1 in this utility model embodiment 1;
Fig. 3 is the structure cutaway view of a kind of needle tubing fixture disposable spininess pipe injection needle different from Fig. 1 in this utility model embodiment 1;
Fig. 4 is the structure cutaway view of the another kind of needle tubing fixture disposable spininess pipe injection needle different from Fig. 1 in this utility model embodiment 1;
Fig. 5 is the structure cutaway view of injection needles head in this utility model embodiment 2;
Fig. 6 is the structure cutaway view of the needle tubing fixture disposable spininess pipe injection needle different from Fig. 3 in this utility model embodiment 2;
Fig. 7 is the structure cutaway view of the needle tubing fixture disposable spininess pipe injection needle different from Fig. 4 in this utility model embodiment 2;
Fig. 8 is the perspective view of disposable spininess pipe injection needle in this utility model embodiment 1;
Fig. 9 is the perspective view of locating the double wall disposable spininess pipe injection needle different from Fig. 8 in this utility model embodiment 1;
Figure 10 is the structure cutaway view of prefilled syringe in this utility model embodiment 3.
In figure, 1: needle stand; 2: needle tubing; 3: top cover; 4: through hole; 5: column cylinder; 6: location double wall; 7: substrate portion; 8: groove; 9: needle tubing fixture; 10: filling part; 11: needle tube protecting sleeve; 12: needle stand protective sleeve; 13: sealing material layer; 14: injection memorizer; 15: injection; 16: elastomer layer; 17: piston; 18: district is threaded.
The specific embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present utility model is described in further detail.Following examples are used for illustrating this utility model, but are not used for limiting scope of the present utility model.
Embodiment 1
As shown in Figure 1, a kind of disposable spininess pipe injection needle that this utility model embodiment provides, it comprises needle stand 1, three needle tubings 2, needle tubing fixture 9, location double wall 6, needle tube protecting sleeve 11, needle stand protective sleeve 12 and sealing material layers 13, this needle stand 1 is for an end opening, the other end, to have the column cylinder 5 of top cover 3, offers a through hole 4 on the top cover 3 of needle stand 1, described needle tubing 2 through the through hole 4 of the top cover 3 of needle stand 1 and by needle tubing fixture 9 arrays be fixedly installed on the top cover 3 of needle stand 1, the two ends of needle tubing 2 all have needle point, the needle point structure at two ends can be different, wherein be positioned at the needle point of top cover 3 tops for thrusting skin and injection, be placed in needle point in column cylinder 5 for thrusting injection memorizer to extract medicinal liquid, needle tubing fixture 9 is a convex structure, comprise the substrate portion 7 and the filling part 10 that are connected as a single entity, substrate portion 7 is positioned at top cover 3 tops, filling part 10 is through through hole 4, because needle tubing is conventionally very thin and to be positioned at the part of column cylinder longer, by filling part 10, can increase the contact length of needle tubing 2 and needle tubing fixture 9, and effectively reduce the length of the needle tubing 2 exposing in column cylinder 5, thereby the relatively firm and mechanical strength of needle tubing 2 further being improved be beneficial to thrust injection memorizer gets liquid, the length of certain this filling part 10 would not affect needle tubing 2 and get liquid, substrate portion 7 and filling part 10 employing polymeric materials or structure adhesive are integrally manufactured, top cover 3 tops are provided with location double wall 6 for limiting the substrate portion 7 of needle tubing fixture 9, prevent that substrate portion 7 from moving radially at needle tubing 2, the inwall of location double wall 6 has groove 8, substrate portion 7 is stuck in groove 8, can make needle tubing fixture 9 more firm, can certainly use structural adhesive that the substrate portion of needle tubing fixture 97 is bonded on needle stand 1 top cover 3, on double wall 6 outer walls of location, be arranged with needle tube protecting sleeve 11, in the outside of needle tube protecting sleeve 11 and needle stand 1, can be arranged with needle stand protective sleeve 12, the opening part of needle stand protective sleeve 12 bottoms is provided with sealing material layer 13, and encapsulant can be selected the medical materials such as sealing dialyzing paper.Certainly, in the present embodiment, the number of needle tubing 2 is not limited to three, can be two, four, five or more number more, and the distribution of needle tubing 2 is not limited to the arrangement of array, as long as can be arranged on dispersedly on needle tubing fixture 9.
The present embodiment is by being arranged on needle tubing 2 dispersedly on needle tubing fixture 9, needle tubing fixture 9 is firmly arranged on the top cover 3 of needle stand 1 by location double wall 6 again, thereby array spininess pipe 2 injection needles have been formed, by this syringe needle, can the insulin of doses be injected subcutaneous dispersedly simultaneously, inject time is short, be conducive to the quick absorption of insulin and easy-to-leak liquid not, having avoided single needle tubing insulin injection to accumulate in injection site overlong time causes subcutaneous fat hypertrophy and produces the phenomenon of scleroma, during injection, can vertically inject, easy to use; Three needle tubings 2 of the present embodiment directly pass the through hole 4 of needle stand 1, and the needle tubing fixture 9 that is structural adhesive by material is arranged on needle stand top cover 3, structure and manufacturing process are simple, with low cost, needle tubing reliability is high, and reduce syringe needle and get liquid end in the out of use risk of piercing process obstruction because of indivedual needle tubings 2, improved the reliability of injection; Needle tube protecting sleeve 11 and needle stand protective sleeve 12 can select multiple material as standby in plastics such as polypropylene, polrvinyl chloride; by needle tube protecting sleeve 11, can prevent that syringe needle bending in moving process from damaging needle tubing 2; by needle stand protective sleeve 12 and sealing material layer 13 are set, at syringe needle, after the sterilizations such as oxirane, just can guarantee that syringe needle and needle stand 1 are in the period of use always in clean aseptic environment.
Different from Fig. 1, because the several needle tubings in Fig. 2 form a line, needle tubing fixture 9 becomes inverted L-shaped, also can needle tubing fixture 9 is firmly fixing even if groove 8 is not set in the double wall 6 of part location, and can also adopt in addition structural adhesive further to increase constant intensity; Needle tubing fixture 9 in Fig. 3 is directly reduced to substrate portion 7, and this substrate portion 7 is surface plate, but also can be curved slab.
Further, as shown in Figure 4, needle tubing fixture 9 in the present embodiment also can have other distortion, its substrate portion 7 can be made as plastic plate and structural adhesive by polymer, the position being connected with needle tubing 2 in plastic plate is filled with structural adhesive, and the material of the filling part 10 of needle tubing fixture 9 is structural adhesive.
The present embodiment provides another disposable spininess pipe injection needle, and the difference of itself and embodiment 1 is mainly the structure of the number of through hole 4 on needle stand top cover 3, needle tubing fixture 9 and location double wall 6.
As shown in Figure 5, three through hole 4 arrays are set on the top cover 3 of needle stand 1, the rustless steel needle tubing 2 that adopts the glutinous agent of epoxy resin structural adhesive that three two ends are all had to needle point is directly fixed on respectively on the needle stand top cover 3 with through hole 4 arrays, the substrate portion 7 of needle tubing fixture 9 and filling part 10 are the glutinous agent of epoxy resin structural adhesive, because needle tubing fixture 9 in the present embodiment is all to form by structural adhesive being filled in three through holes 4 with on needle stand top cover 3, needle tubing fixture 9 can bond well with through hole 4 inwalls and location double wall 6, so need to groove 8 be set on the double wall 6 of location.
Further, as shown in Figure 6, in order to improve the steadiness of needle tubing 2 on needle tubing fixture 9, the substrate portion 7 of needle tubing fixture 9 can be also set below needle stand top cover 3, the substrate portion 7 of needle tubing fixture 9 on needle stand top cover 3 and under needle stand top cover 3 be arranged in through hole 4 filling parts 10 and be connected as a single entity, correspondingly, at needle stand top cover, the location double wall 6 that limits needle tubing fixture 9 is also set for 3 times.
Further, as shown in Figure 7, through hole 4 on needle stand top cover 3 can also can be bellmouth for straight hole, can adopt the glutinous agent of epoxy resin structural adhesive fixing needle tubing 2 above needle stand top cover 3, also can adopt the glutinous agent of epoxy resin structural adhesive fixing needle tubing 2 below needle tubing top cover 3, the glutinous agent of epoxy resin structural adhesive forms needle tubing fixture 9 after solidifying, the plate face of the substrate portion 7 of needle tubing fixture 9 can be also curved surface for plane, location double wall 6 can be set below needle stand 1 top cover 3, but bossing is set, this bossing is the downward extension of conical through-hole 4 array regions on needle stand 1 top cover 3, through hole 4 on this bossing is the downward extension of through hole 4 on needle stand top cover 3, this bossing plays restriction effect to needle tubing fixture 9 equally.
As shown in Figure 6 and Figure 7, in order to improve injection dispersibility in vivo, be beneficial to absorb and reduce medicinal liquid in the time of gathering of subcutaneous part, needle tubing 2 can be set and stretch out and on top cover 3, locate the length of double wall 6 and the normal direction of needle point liquid outlet is not quite similar.The needlepoint form at needle tubing 2 two ends also can be different from size, but must be firm in structure, be convenient to puncture and be difficult for blocking pipe.
As shown in Figure 8 and Figure 9, the location double wall 6 on top cover 3 can adopt various shape, can be both that square structure can be also circular configuration, can be both that surrounding is sealed continuous double wall, also can adopt the double wall of other compartment.Column cylinder 5 can adopt with existing commercially available injection pen syringe needle similarly circular conventionally, but can be also other shapes such as polygon, as long as can firmly be enclosed within on injection memorizer 14 interfaces.
In this utility model embodiment, needle tubing array can be the one-dimensional array being arranged in a row, and can be also flat two-dimensional arrays.For the ease of plug operation, can anti-slip veins be set at the outer surface of column cylinder 5, even the outer surface at needle tube protecting sleeve 11 also can arrange anti-slip veins; On the inwall of needle stand protective sleeve 12, can also projection be set to more easily take out needle stand 1; According to the structure of injection memorizer 14 interfaces, its corresponding screw thread or fixing bayonet socket can also be set on the barrel of column cylinder 5, for removably connecting with injection bin.
Further, the external diameter of needle tubing 2 is 60um～450um, internal diameter is 30um～250um, and stretching out in location double wall 6 is 0.2mm～4.0mm for needle tubing 2 length of puncture injection, and being arranged in column cylinder 5 is 0.5mm～15mm for extract the needle tubing length of injection from injection bin.Because the needle tubing adopting is very thin and very short for thrusting the needle tubing length of injection, needn't consider to pinch the injection maneuvers such as skin and just can effectively adopt vertical injection in injection site at arm, thigh, abdominal part etc., injection needle 2 all thrusts subcutaneous, very easy to use, the risk of being convenient to implement the injection of rotation position and not having intramuscular injection, hypodynia be can easily realize even without pain injection, and then patient's injection compliance and therapeutic effect obviously improved.
Above-mentioned injection needle is used except can be used for combining with existing novopen, as select suitable interface structure also can use with syringe or the injection memory combination of existing or future other medicines, and owing to having a plurality of needle tubings in this utility model column cylinder as liquid taking port, the plurality of liquid taking port can be used with the injection memory combination of different pharmaceutical respectively.
As shown in figure 10, the present embodiment provides a kind of prefilled syringe that comprises disposable spininess pipe injection needle in above-described embodiment, it is comprised of disposable spininess pipe injection needle and injection bin, injection bin matches and can relatively move with the inwall of column cylinder 5, injection memorizer comprises cylindrical shell, elastomer layer 16 and piston 17, top and the bottom of cylindrical shell are equipped with opening, the opening at cylindrical shell top is corresponding with needle tubing 2, elastomer layer 16 is positioned at the top of cylindrical shell for the opening at sealed cylinder top, simultaneously, elastomer layer 16 is easy to be pierced through by the needle point of column cylinder 5 inner needle tubes 2, the material selection rubber of general elastomer layer 16, piston 17 is arranged on the bottom of cylindrical shell, space between piston 17 and elastomer layer 16 stores injection 15, the opening of cylinder body bottom is conveniently pressed piston 17, injection memorizer 14 is connected with column cylinder 5, specifically, the bottom of cylindrical shell is also connected with bending segment, on the outer wall of the free end of bending segment and column cylinder 5, all there is the district 18 that is threaded accordingly, injection memorizer 14 is connected in this district 18 that is threaded with column cylinder 5.Certainly on the free end of bending segment and the outer wall of column cylinder 5, also can be provided with the bayonet arrangement matching, both also can take bayonet socket clamping.The cylindrical shell of column cylinder and injection memorizer is made by the conventional transparent materials such as polypropylene, and the containing mark of being convenient to observation can be set on the cylindrical shell of injection memorizer like this.
During use, can first manual rotation injection bin be produced to be threaded district 18 or fixing bayonet socket, the column cylinder 5 of injection memorizer 14 and disposable spininess pipe injection needle can relative sliding afterwards, now pressing injection bin moves towards disposable spininess pipe injection needle, and by the elastomer on needle pierces top until contact injection 15, the piston 17 extruding injection that finally promote bottom are implemented to inject by needle tubing.The present embodiment is by disposable spininess pipe injection needle and injection bin are combined, convenient to use, device small volume and less weight, and be not limited to injection of insulin, and also go for other drug injection, apply more extensive.
Manufacturer can be assembled into one by disposable spininess pipe injection needle and injection bin; and be together sterilized and be enclosed in needle stand protective sleeve 12; also can at ordinary times disposable spininess pipe injection needle and injection bin be deposited respectively, during use, be assembled into again one.
The various products of above-described embodiment, all can adopt the processing technique of existing maturation and the routine of regulation or new medical material manufacture, and manufacturing process is simple, with low cost.
In sum, the disposable spininess pipe injection needle that this utility model embodiment provides by many needle tubings 2 through the through hole 4 of needle stand 1 top cover 3 and by needle tubing fixture 9 arrays be fixedly installed on the top cover 3 of needle stand 1, needle tubing fastness is high, can the insulin of doses be injected subcutaneous simultaneously dispersedly, inject time is short, be conducive to the absorption of insulin, no leakage, having avoided single needle tubing injection to cause insulin to accumulate in injection site overlong time causes subcutaneous fat hypertrophy and produces the phenomenon of scleroma, structure and manufacturing process are simple, with low cost, having reduced syringe needle gets liquid end because of needle tubing 2 and stops up out of use risk at piercing process, improved the reliability of injection, and owing to adopting needle tubing very thin and very short for thrusting the needle tubing length of injection, without pinching just can be the directly vertical inserting needle of skin, injection needle 2 all thrusts subcutaneous, the risk of being convenient to implement the injection of rotation position and not having intramuscular injection, can easily realize hypodynia even without pain injection, and then obviously improve patient's injection compliance and therapeutic effect, the prefilled syringe that this utility model embodiment provides is combined disposable spininess pipe injection needle and injection bin, convenient to use, device small volume and less weight, and be not limited to injection of insulin, also go for other drug injection, apply more extensive.
The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; do not departing under the prerequisite of this utility model know-why; can also make some improvement and modification, these improve and modification also should be considered as protection domain of the present utility model.
Claims (11)
1. a disposable spininess pipe injection needle, it is characterized in that: it comprises needle stand (1), needle tubing fixture (9), location structure and at least two needle tubings (2), described needle stand (1) is an end opening, the other end has the column cylinder (5) of top cover (3), on the top cover (3) of described needle stand (1), offer through hole (4), described needle tubing (2) passes the through hole (4) on the top cover (3) of described needle stand (1) and by described needle tubing fixture (9), is fixedly installed on dispersedly on the top cover (3) of described needle stand (1), described location structure is arranged on the top cover (3) of described needle stand (1) above or/and under top cover (3), described needle tubing fixture (9) is fixed in described location structure, the two ends of described needle tubing (2) have needle point.
2. disposable spininess pipe injection needle according to claim 1, is characterized in that: described needle tubing fixture (9) comprises substrate portion (7), and described substrate portion (7) is fixed in described location structure.
3. disposable spininess pipe injection needle according to claim 2, it is characterized in that: described needle tubing fixture (9) also comprises the filling part (10) being connected with described substrate portion (7), described filling part (10) stretches into or passes the through hole (4) of described top cover (3).
4. disposable spininess pipe injection needle according to claim 3, it is characterized in that: described location structure is location double wall (6), and the inner surface of described location double wall (6) has groove (8) for clamping the substrate portion (7) of described needle tubing fixture (9).
5. disposable spininess pipe injection needle according to claim 1, is characterized in that: described needle tubing (2) is consistent with the number of described through hole (4), and needle tubing described in each (2) is positioned among each through hole (4) and is array and distributes.
6. disposable spininess pipe injection needle according to claim 1, is characterized in that: the normal direction of the liquid outlet of at least two described needle points is different.
7. disposable spininess pipe injection needle according to claim 1, is characterized in that: it is different that at least two described needle tubings (2) stretch out the partial-length of described location structure.
8. disposable spininess pipe injection needle according to claim 3, it is characterized in that: the substrate portion (7) of described needle tubing fixture (9) be polymer with the material of filling part (10) or be sqtructural adhesive or the substrate portion of described needle tubing fixture (9) (7) in the position that contacts with needle tubing (2) be filled with structural adhesive, the material at other position of substrate portion (7) is polymer, and the material of the filling part (10) of described needle tubing fixture (9) is structural adhesive.
9. according to the disposable spininess pipe injection needle described in claim 1-8 any one, it is characterized in that: it is 0.2mm～4mm for the length of part of skin puncture injection that described needle tubing (2) stretches out described location structure, it is 0.5mm～15mm for extracting the length of the part of injection that described needle tubing (2) is positioned at described column cylinder (5), the external diameter of described needle tubing (2) is 60um～450um, and internal diameter is 30um～250um.
10. disposable spininess pipe injection needle according to claim 1; it is characterized in that: the location structure on the top cover (3) of described needle stand (1) is arranged with needle tube protecting sleeve (11) outward; described needle stand (1) and needle tube protecting sleeve (11) are outer is arranged with needle stand protective sleeve (12), and the opening part of described needle stand protective sleeve (12) bottom is provided with sealing material layer (13).
11. 1 kinds of prefilled syringes that comprise the disposable spininess pipe injection needle described in claim 1-10 any one, it is characterized in that, also comprise the injection memorizer (14) matching with the inwall of described column cylinder (5), described injection memorizer comprises cylindrical shell, elastomer layer (16) and piston (17), the top of described cylindrical shell and bottom are equipped with on opening and cylindrical shell and are provided with containing mark, described elastomer layer (16) is positioned at the top of cylindrical shell for the opening at sealed cylinder top, described piston (17) is arranged on the bottom of described cylindrical shell, the bottom of described cylindrical shell is also connected with bending segment, the free end of described bending segment is connected or clamping with the outer wall thread of described column cylinder (5).
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| CN201320434461.0U CN203408309U (en) | 2013-07-19 | 2013-07-19 | Disposable multi-needle tube injection needle and prefilled injector comprising same |
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| CN201320434461.0U CN203408309U (en) | 2013-07-19 | 2013-07-19 | Disposable multi-needle tube injection needle and prefilled injector comprising same |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103341228A (en) * | 2013-07-19 | 2013-10-09 | 清华大学 | Disposable multi-needle-tube injection needle head and pre-filling syringe comprising injection needle head |
| CN105477770A (en) * | 2014-09-16 | 2016-04-13 | 北京大学深圳医院 | Multi-point microinjection device for uterine neck |
-
2013
- 2013-07-19 CN CN201320434461.0U patent/CN203408309U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103341228A (en) * | 2013-07-19 | 2013-10-09 | 清华大学 | Disposable multi-needle-tube injection needle head and pre-filling syringe comprising injection needle head |
| WO2015007243A1 (en) * | 2013-07-19 | 2015-01-22 | 清华大学 | Disposable multi-needle injection needle and pre-fillable syringe having same |
| CN103341228B (en) * | 2013-07-19 | 2015-08-12 | 清华大学 | A kind of prefilled syringe |
| CN105477770A (en) * | 2014-09-16 | 2016-04-13 | 北京大学深圳医院 | Multi-point microinjection device for uterine neck |
| CN105477770B (en) * | 2014-09-16 | 2019-01-15 | 北京大学深圳医院 | Uterine neck multiple spot micro injecting device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140129 |