CN202497552U - Needleless injector - Google Patents

Abstract

The utility model provides a needleless injector. The injector comprises a power plant, a control switch and an injection portion, wherein the control switch and the injection portion are located on two ends of the power plant. The power plant comprises an upper cylinder connected with the control switch, a lower cylinder connected with the injection portion and an accommodation groove way which passes through the upper cylinder and the lower cylinder. The accommodation groove way accommodates a power spring, a push rod and a fixator, wherein push rod passes through the power spring; the fixator is used to fix the push rod. The needleless injector of the utility model has the following advantages that: by using the needleless injector, an injection dosage can be increased; simultaneously, according to the dose, different power sources are provided so that the power is given according to the dosage.

Description

Needleless injector

Technical field

This utility model relates to a kind of needleless injector, relates in particular to a kind ofly can increase shot dosage, can also belong to the medicine instrument technical field according to the needleless injector how many different dynamic sources is provided of dosage simultaneously.

Background technology

Syringe has experienced repeatedly revolution, and to disposable ordinary syringe, the returnable safe self-breaking syringe of syringe needle, these all are the syringes that has draw point from the glass syringe that uses repeatedly.Each revolution of syringe all is to pollute and avoid the risk of infection of second use to patient, nurse in order to reduce syringe, and for can be without draw point to the human injection, through people's years of researches, needleless injector be born finally.

But there is following problem in needleless injector in the market: shot dosage is little, maximum 0.5 milliliter; The amount of power that provides is single.For example: no matter injection all is a kind of power quantity of giving for 0.1 milliliter, 0.3 milliliter, 0.5 milliliter, adding 0.1 milliliter only need 100 N, 250 Ns of 0.5 milliliter of needs; It can only provide 250 Ns during injection, can not give power with amount, and the deep mixed of medicine causes when causing subcutaneous injection; Patient skin has pain perception; Sometimes also can cause subcutaneous tissue injury, become silted up blue or green, lump appear in skin surface, and can't consider the skin pore thickness of fat human body, thin and weak human body sometimes.

In view of this, be necessary existing needleless injector is improved, accomplish to increase shot dosage, can also reach the requirement of " giving power " according to the different power source that how much provides of dosage simultaneously with amount.

The utility model content

The purpose of this utility model is to provide a kind of needleless injector, and this needleless injector not only can increase shot dosage, can also accomplish " giving power with amount " according to the different power source that how much provides of dosage simultaneously.

For realizing above-mentioned purpose; A kind of needleless injector of this utility model; Gauge tap and injection part that it comprises power set and lays respectively at the power set two ends; Said power set comprise top cylinder, doffing that is connected with injection part that is connected with gauge tap and the conduit of accommodating that runs through said top cylinder and doffing; The holder that wherein said power set also comprise power spring, run through the push rod of said power spring and be used for fixing said push rod, said power spring, push rod and holder all are contained in the said conduit of accommodating.

As the further improvement of this utility model, said top cylinder is outward extended with the projection of diameter less than the top cylinder diameter near gauge tap one side along said top cylinder length direction, and said projection comprises front end.

As the further improvement of this utility model, said gauge tap is provided with projection in the axle position therein.

As the further improvement of this utility model, said gauge tap also is provided with bar blocks, and said bar blocks comprises the agnail that matches in order to said projection front end.

As the further improvement of this utility model, the accommodating to contain in the conduit of said needleless injector indicates graduated dial drum, and said dial drum inwall is provided with spiral groove.

Further improvement as this utility model is coated with reseting sleeve in the said dial drum, and the outer wall of said reseting sleeve is formed with the projection that matches with said helical groove.

Further improvement as this utility model; The inwall of said dial drum cooperates formation one host cavity with the inwall of said reseting sleeve; One end of said host cavity contains protective sleeve, is coated with driver in the said protective sleeve and an end of the securing push rod of device that is fixed.

As the further improvement of this utility model, be coated with coil tension spring in the said driver, can pull the trigger the firing device and the ball that promote push rod.

As the further improvement of this utility model, the other end of said host cavity contains the cushion collar that is connected with said injection part.

As the further improvement of this utility model, an end of said push rod is connected with said firing device mutually, and the other end is coated in the said cushion collar and with said injection part and is connected.

Compared with prior art, the advantage of this utility model is: the needleless injector of this utility model can increase to 2 milliliters with shot dosage through power set are set, and dosage has turned over 4 times; Simultaneously, the needleless injector of this utility model can also be accomplished " giving power with amount " according to the different power source that how much provides of dosage, so not only can solve ordinary syringe to the people infect possible, but also can accomplish science, Needleless injection accurately.

Description of drawings

Fig. 1 is the axonometric chart of this utility model needleless injector.

Fig. 2 is the explosive view of needleless injector shown in Figure 1.

Fig. 3 is the cutaway view of needleless injector shown in Figure 1.

Fig. 4 a is the axonometric chart of a specific embodiment among needleless injector part elliptical first embodiment shown in Figure 1 (single hole injection part).

Fig. 4 b is the axonometric chart of another specific embodiment among needleless injector part elliptical first embodiment shown in Figure 1 (single hole injection part).

Fig. 5 is the explosive view of single hole injection part shown in Fig. 4 b.

Fig. 6 a is the cutaway view of single hole injection part shown in Fig. 4 a.

Fig. 6 b is the cutaway view of single hole injection part shown in Fig. 4 b.

Fig. 7 a is the axonometric chart of a specific embodiment among needleless injector part elliptical second embodiment shown in Figure 1 (three hole injection part). [0026]Fig. 7 b is the axonometric chart of another specific embodiment among needleless injector part elliptical second embodiment shown in Figure 1 (three hole injection part).

Fig. 8 is the explosive view of three hole injection part shown in Fig. 7 a.

Fig. 9 a is the cutaway view of three hole injection part shown in Fig. 7 a.

Fig. 9 b is the cutaway view of three hole injection part shown in Fig. 7 b.

Figure 10 a is the axonometric chart of a specific embodiment among needleless injector part elliptical the 3rd embodiment shown in Figure 1 (four hole injection part).

Figure 10 b is the axonometric chart of another specific embodiment among needleless injector part elliptical the 3rd embodiment shown in Figure 1 (four hole injection part).

Figure 11 is the explosive view of four hole injection part shown in Figure 10 a.

Figure 12 a is the cutaway view of four hole injection part shown in Figure 10 a.

Figure 12 b is the cutaway view of four hole injection part shown in Figure 10 b.

The specific embodiment

For the purpose, technical scheme and the advantage that make this utility model is clearer, this utility model is described in detail below in conjunction with accompanying drawing and specific embodiment.

As shown in Figure 1, gauge tap 20 and injection part 30 that the needleless injector 100 of this utility model comprises power set 10 and lays respectively at power set 10 two ends.In this embodiment, said power set 10, gauge tap 20 and injection part 30 all are cylindric.

Like Fig. 2 and combine shown in Figure 1ly, said power set 10 comprise top cylinder 11 that is connected with gauge tap 20 and the doffing 12 that is connected with injection part 30.Said top cylinder 11 is outward extended with the projection 111 of diameter less than top cylinder 11 diameters near gauge tap 20 1 sides along said top cylinder 11 length directions; Said projection 111 is connected with said top cylinder 11 and is hollow, and top cylinder 11 outwards diffuses to form conduit 112 with projection 111 connections.Said projection 111 comprises front end 113 and sliding shim 114, and said sliding shim 114 matches with said conduit 112, makes said top cylinder 11 closely be connected with gauge tap 20.11 tops of said top cylinder are provided with switch lock sign 115, reverse said gauge tap 20 according to said switch lock sign 115, thereby can limit the Push And Release of said needleless injector 100.12 tops of said doffing are provided with magnifier 121, can see the dosage of injectable drug clearly through said magnifier 121, thereby can be according to the corresponding power that how much provides of ID.In this embodiment, the tube top of said top cylinder 11 all is provided with chute 17 with the tube top of said doffing 12, and the chute 17 on 12 tops of the chute 17 on 11 tops of top cylinder and doffing is connected mutually, thereby the chute 17 of formation Flos Mume shape helps attractive in appearance.

As Fig. 3 and combine shown in Figure 2, said power set 10 also comprise run through said top cylinder 11 and doffing 12 accommodate conduit 13.Said accommodate to contain in the conduit 13 indicate graduated dial drum 131; Said dial drum 131 inwalls are provided with spiral groove 1311; Be coated with reseting sleeve 132 in the said dial drum 131; Said reseting sleeve 132 also is formed with spiral helicine groove 1311 near the inwall of injection part 30 1 ends, the outer wall of this reseting sleeve 132 also be formed with dial drum 131 inwalls on the projection 1321 that matches of helical groove 1311.Said dial drum 131 all is provided with draw-in groove in order to hold buckle spring 151 near gauge tap 20 1 sides and said reseting sleeve 132 near injection part 30 1 sides.The inwall of said dial drum 131 cooperates formation one host cavity with the inwall of said reseting sleeve 132; Said host cavity contains protective sleeve 141 near gauge tap 20 1 sides; The holder 145 that said host cavity centre position contains power spring 153, runs through the push rod 144 of said power spring 153 and be used for fixing said push rod 144, said host cavity contain the cushion collar 146 that is connected with injection part 30 near injection part 30 1 sides.The front position place, the outside of said host cavity is provided with the buckling piece 16 that is used to hold said protective sleeve 141.Be coated with driver 142 in the said protective sleeve 141 and an end of the device 145 securing push rods 144 that are fixed; Be coated with coil tension spring 152 in the said driver 142, can pull the trigger the firing device 143 and the ball moving up and down 147 that promote push rod 144; One end of said push rod 144 is connected with said firing device 143 mutually, and the other end is coated in the said cushion collar 146 and with said injection part 30 and is connected.

It should be noted that: when rotation top cylinder 11 and doffing 12, dial drum 131 is that and then top cylinder 11 rotates with doffing 12 together, but reseting sleeve 132 is fixed.In this embodiment, power set 10 parts utilize moving up and down of ball 147 to reach the fixedly effect of push rod 144, in other embodiments, also can adopt spring to replace ball 147 to reach the effect of identical fixedly push rod 144.

Said gauge tap 20 axle position therein is provided with the projection 21 that is used with coil tension spring 152; It is the bar blocks 22 of axis of symmetry with projection 21 that said gauge tap 20 also is provided with two; Said two bar blocks 22 side within it are respectively arranged with the agnail 221 that matches with said projection front end 113; Through cooperating of said agnail 221 and said projection front end 113, but restricted power device 10 comes off with gauge tap 20 easily.

The needleless injector 100 of this embodiment is through being provided with power set 10; Can be when injectable drug according to the different power source that how much provides of dosage; Accomplish " giving power " with amount; So not only can solve ordinary syringe to the people infect maybe, but also can accomplish science, Needleless injection accurately.

Like Fig. 4 a to 6b and combine shown in Figure 3ly, this utility model needleless injector 100 is a single hole injection part 40 about first embodiment of injection part 30.Said single hole injection part 40 comprises first expansion link 41, be coated with part first expansion link 41 first plug 42, be coated with first plug 42 and first overcoat 43 of part first expansion link 41 and first transducer 44 that is connected first overcoat, 43 1 ends.Said first expansion link 41 comprises first protuberance 411 and extends and the blocking part 412 of formation along first expansion link, 41 length directions from said first protuberance 411.Be provided with first open slot 413 between said first protuberance 411 and the said blocking part 412, said first open slot 413 comprises shuttle type groove, rectangle hole groove and rhombus groove.Extended to form first press section 414 from said blocking part 412 along first expansion link, 41 length directions; Said first press section 414 is provided with V-type groove or U type groove 415; During assembling needleless injector 100, said first press section 414 is coated by the cushion collar in the power set 10 146.Said first plug 42 only includes one first protruded object 421, and said first overcoat 43 only includes one and said first protruded object, 421 corresponding first holes 431.One end in said first overcoat, the 43 bodies outside is provided with the spiral striped 432 that matches with first transducer 44, its other end be provided with power set 10 in reseting sleeve 132 spiral first gear 433 that matches and use.The top of said first overcoat 43 includes contact site 434, and said first hole 431 is arranged on the said contact site 434, includes anti-vacuum groove with the corresponding end in top.Said first transducer 44 comprises first inside groove and first syringe needle 441 that is used to extract medicine that is used to accommodate said contact site 434, and the front position place of said first syringe needle 441 is provided with first pin hole 442 that is connected with said first inside groove.The inwall of said first inside groove be provided with block mutually with said helical form striped 432 and draw-in groove.In this embodiment; Be provided with open slot 413 between first protuberance 411 and the blocking part 412, first press section 414 also is provided with V-type groove or U type groove 415; In other embodiments; Can not be provided with open slot 413 and V-type groove or U type groove 415, as long as can reach the same effect that extracts medicine.

In this embodiment, the medicine bottle bore that the first included transducers 44 of single hole injection part 40 can be compatible domestic, first transducer 44 ' can compatible external medicine bottle bore, increase the selection face that patient uses, and reduced medical expense; Simultaneously, because first press section 414 is coated by the cushion collar in the power set 10 146, when injection was pulled the trigger on earth, phenomenon can not appear fractureing in first expansion link 41; And, through first plug 42 being carried out a glue design, the service life of having improved first plug 42.

Like Fig. 7 a to 9b and combine shown in Figure 3ly, this utility model needleless injector 100 is three hole injection part 50 about second embodiment of injection part 30.Said three hole injection part 50 comprise second expansion link 51, be coated with part second expansion link 51 second plug 52, be coated with second overcoat 53 of second plug 52 and part second expansion link 51 and second transducer 54 that is connected second overcoat, 53 1 ends.Said second expansion link 51 comprises second protuberance 511 and extends and second press section 512 of formation along second expansion link, 51 length directions from said second protuberance 511.Be provided with second open slot 513 between said second protuberance 511 and said second press section 512, said second open slot 513 comprises shuttle type groove, rectangle hole groove and the rhombus groove that is cross.Said second press section 512 comprises chamfering piece 514, and that said chamfering piece 514 can be set to is square, V-type or U type.Said second plug 52 includes three second protruded objects 521, and said second overcoat 53 includes three and second protruded object, 521 corresponding second holes 531.One end of said second overcoat 53 is provided with docking section 532, and said three second holes 531 are arranged on the said docking section 532, and the body arranged outside of said second overcoat, 53 other ends is useful on second gear 533 that connects said power set 10.Said second transducer 54 comprises second inside groove and second syringe needle 541 that is used to extract medicine that is used to accommodate said docking section 532, and the front position place of said second syringe needle 541 is provided with second pin hole 542 that is connected with said second inside groove.

In this embodiment, the medicine bottle bore that the second included transducers 54 of three hole injection part 50 can be compatible domestic, second transducer 54 ' can compatible external medicine bottle bore, increase the selection face that patient uses, and reduced medical expense; Simultaneously; Correspondence is provided with three second holes 531 to three hole injection part 50 on three second protruded objects 521, the docking section 532 at its second overcoat 53 being provided with on its second plug 52; Through cooperating of three second protruded objects 521 and three second holes 531, thereby reached the purpose of the heavy dose of medicine of a shot.

Shown in Figure 10 a to 12b, this utility model needleless injector 100 is four hole injection part 60 about the 3rd embodiment of injection part 30.Difference between the three hole injection part 50 shown in said four hole injection part 60 and Fig. 7 a to 9b is: this embodiment four hole injection part 60 included plugs 61 are provided with four protruded objects 611; Simultaneously, four hole injection part, 60 included overcoats 62 are provided with and four protruded objects, 611 corresponding four holes 621.The four hole injection part 60 of this embodiment are the same with above-mentioned three hole injection part 50 all can compatible market on the bore of all medicine bottles, can also reach the purpose of the heavy dose of medicine of a shot simultaneously.The needleless injector 100 of this utility model has reached the purpose of once injecting 2 milliliters of medicines at most at present.

During concrete the use, at first gauge tap 20 is set at out state, rotates top cylinder 11 and doffing 12 then, can change the dose calibration that needs injection until reaching this moment through the scale of magnifier 121 observation dial drums 131.In the process of rotation top cylinder 11 and doffing 12, power spring 153 is compressed, and the elastic force that finally reaches power spring 153 equates with the required power of injectable drug.Then injection part 30 begins to extract medicine, is example with single hole injection part 40, and first syringe needle 441 is inserted in the medicine bottles, spurs first expansion link 41, under the effect of first plug 42, medicine is extracted in first overcoat 43.After having extracted medicine, single hole injection part 40 closely is connected with spiral helicine first gear 433 through spiral helicine groove 1311 with power set 10.Be exactly injectable drug at last, pressed gauge tap 20, under the effect of coil tension spring 152; The projection 21 that is positioned at gauge tap 20 central shaft positions promotes driver 142, makes ball 147 move up and down, simultaneously; Under the effect of the coil tension spring 152 in being coated on driver 142, firing device 143 promotes push rod 144, under the elastic force of power spring 153 drives; Push rod 144 promotes first expansion link 41 of single hole injection part 40; Make medicine pulled the trigger and spray and go out, and then be injected in the patient body, finally reach the purpose of Needleless injection from first hole 431.

Above embodiment is only unrestricted in order to the technical scheme of explanation this utility model; Although this utility model is specified with reference to preferred embodiment; Those of ordinary skill in the art is to be understood that; Can make amendment or be equal to replacement the technical scheme of this utility model, and not break away from the spirit and the scope of this utility model technical scheme.

Claims (10)

1. needleless injector; Gauge tap and injection part that it comprises power set and lays respectively at the power set two ends; Said power set comprise top cylinder, doffing that is connected with injection part that is connected with gauge tap and the conduit of accommodating that runs through said top cylinder and doffing; It is characterized in that: the holder that said power set also comprise power spring, run through the push rod of said power spring and be used for fixing said push rod, said power spring, push rod and holder all are contained in the said conduit of accommodating.

2. needleless injector according to claim 1 is characterized in that: said top cylinder is outward extended with the projection of diameter less than the top cylinder diameter near gauge tap one side along said top cylinder length direction, and said projection comprises front end.

3. needleless injector according to claim 1 is characterized in that: said gauge tap is provided with projection in the axle position therein.

4. needleless injector according to claim 3 is characterized in that: said gauge tap also is provided with bar blocks, and said bar blocks comprises the agnail that matches in order to said projection front end.

5. needleless injector according to claim 1 is characterized in that: the accommodating to contain in the conduit of said needleless injector indicates graduated dial drum, and said dial drum inwall is provided with spiral groove.

6. needleless injector according to claim 5 is characterized in that: be coated with reseting sleeve in the said dial drum, the outer wall of said reseting sleeve is formed with the projection that matches with said helical groove.

7. needleless injector according to claim 6; It is characterized in that: the inwall of said dial drum cooperates formation one host cavity with the inwall of said reseting sleeve; One end of said host cavity contains protective sleeve, is coated with driver in the said protective sleeve and an end of the securing push rod of device that is fixed.

8. needleless injector according to claim 7 is characterized in that: be coated with coil tension spring in the said driver, can pull the trigger the firing device and the ball that promote push rod.

9. needleless injector according to claim 7 is characterized in that: the other end of said host cavity contains the cushion collar that is connected with said injection part.

10. according to Claim 8 or 9 described needleless injectors, it is characterized in that: an end of said push rod is connected with said firing device mutually, and the other end is coated in the said cushion collar and with said injection part and is connected.

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