CN209564464U - A kind of needleless introducing apparatus of adjustable dosage - Google Patents

Abstract

The utility model discloses a kind of needleless introducing apparatus of adjustable dosage, including, shell is imported, is imported intracavitary in the stroke of shell loading stroke shell；Importing interior of shell is installation cavity, and guide cylinder is fixed in installation cavity, and pressure pilot hole and pressure axis assembly, the axis that presses are provided with press fit hole close to stroke limit cylinder one end；It is additionally provided with limiting stand on pressure axis, limiting stand is held out against with trigger block one end, and swivel pin passes through trigger block and switch groove sidewall assembly；Trigger block is adjacent to far from drive pin, drive pin is equipped on limiting stand one end with inclined-plane is released；Pressure axis is fixed with the first pressure spring mounting post, the second pressure spring mounting post assembly respectively far from the first pressure spring mounting post, pressure both ends of the spring is provided on the one end of press fit hole；Switch lever is installed in switch hole；It is mounted on platform and is fixed with buckle locating part, buckle locating part one end and limit installation platform assembles and is provided with retreat stop block on the fixed, other end, retreat stop block inside and the clamping of pressing ring end face.

Description

A kind of needleless introducing apparatus of adjustable dosage

Technical field

The utility model relates to needleless introducing apparatus, more particularly to a kind of needleless introducing apparatus of adjustable dosage.

Background technique

Needleless introducing apparatus also becomes needleless injector, and drug is imported epidermis by pore by momentary pulse pressure Interior, so that skin absorbs the drug, and whole process does not need needle thorn, therefore can reduce the pain of sufferer, Er Qieyou It is punctured in no syringe needle, cross-infection probability is greatly reduced.Needleless introducing apparatus has been widely used for human injection, moves at present Object injection.

Current needleless introducing apparatus is generally unable to accurately control dosage, mainly by passing through after sucking medicament in ampoule The reduction amount of ampoule medicament infers the pharmaceutical quantities imported, and this mode is being more convenient to pharmaceutical quantities occasion of less demanding , but under the occasion required with importing pharmaceutical quantities, it is clear that it does not use.Because the amount of medicament reduction in ampoule is possible or inclined It is few, to find out its cause, mainly inadequate to the control of drug-push lever stroke.

Therefore applicant proposes a kind of needleless introducing apparatus of adjustable dosage, can pass through control drug-push lever stroke control The dosage of importing, to avoid excessive importing or import volume inadequate.

Utility model content

In view of the above drawbacks of the prior art, it is adjustable that the technical problem to be solved by the utility model is to provide one kind The needleless introducing apparatus of dosage,

To achieve the above object, the utility model provides a kind of needleless introducing apparatus of adjustable dosage, including, outside stroke Shell imports shell, imports intracavitary in the stroke of shell loading stroke shell；

The stroke inner cavity is fixed with stroke limit cylinder far from importing shell one end, stroke limit cylinder inner hollow, and Stroke limit cylinder is fixed with ampoule mounting cylinder far from shell one end inside is imported, and ampoule mounting cylinder inner wall is by screw thread and screws cylinder Outer wall screws assembly；

The importing interior of shell is installation cavity, is fixed with guide cylinder in installation cavity, is provided with pressure on guide cylinder and leads Xiang Kong, switch slot, switch hole, platform, the pressure pilot hole and pressure axis assembly is mounted, the pressure axis is close to row Journey position-limiting drum one end is provided with press fit hole；

It is additionally provided with limiting stand on the pressure axis, limiting stand is held out against with trigger block one end, and swivel pin passes through trigger block With switch groove sidewall assembly；

The trigger block is adjacent to far from drive pin, the drive pin is equipped on limiting stand one end with inclined-plane is released, The releasing inclined-plane is arranged on switch lever；

Far from the first pressure spring mounting post is provided on the one end of press fit hole, described first applies the pressure axis Pressing spring mounting post and pressure spring one end assembly are fixed, and the pressure spring other end and the second pressure spring mounting post assembly are solid Fixed, the second pressure spring mounting post is fixed on pressing ring on the end face of pressure spring；

The pressing ring is provided with cooperation pressure holes on the end face far from pressure spring, is equipped in the switch hole Switch lever；

Buckle locating part is fixed on the limit installation platform, buckle locating part one end and limit installation platform assembly are solid Retreat stop block, retreat stop block inside and the clamping of pressing ring end face are provided on the fixed, other end.

Preferably, outer shell outer wall and stroke outer casing inner wall is imported to assemble by threaded engagement.

Preferably, the releasing inclined-plane both ends are connect with tip surface, switch side respectively, and the switch lever is releasing Thickness at inclined-plane is gradually increased by tip towards switch-side face.

Preferably, it is adjacent on the outside of the tip surface and switch restoring board, on the inside of switch restoring board and switch spring one end Assembly is fixed, and the switch spring other end and switch hole end surface assembly are fixed.

Preferably, torsional spring is provided between the trigger block and switch slot side, torsion spring set is mounted on drive pin, and two End is fixed with trigger block, switch groove sidewall assembly respectively.

Preferably, switch lever is fixed far from assembly on the inside of inclined-plane one end and switch ring is released, and is arranged on the switch ring There is through hole, reset annular groove, the through hole penetrating switch ring is connected to platform is mounted.

Preferably, the importing shell fixes restraining position ring block on switch ring one end, and stop collar, which is packed into, resets annular groove It is interior, and spring-assisted reduction, the switch ring open end and row are installed between stop collar end face and reset annular groove inner face Assembly is fixed on the inside of Cheng Huan, and stroke ring and stop collar cooperate to prevent switch ring to be detached from and import shell.

Preferably, buckle locating part has elasticity, and when original state, tilts to housing axis is imported.

Preferably, the stroke shell, import outer shell outer wall on be provided with scale.

It preferably, further include ampoule, ampoule includes medicine-storing tube, is drug storage inner cylinder inside the medicine-storing tube, and in drug storage Cylinder one end and piston seal assemble, and piston and the assembly of drug-push lever one end are fixed；

The medicine-storing tube both ends are respectively arranged with the first positive stop end, the second positive stop end, and the second positive stop end is far from medicine-storing tube It is fixed on one end and screws cylinder, screwed to assemble on the inside of cylinder and ampoule mounting hole by threaded engagement and fix；

The drug-push lever other end passes through the second positive stop end, screws and is packed into after cylinder in press fit hole and and press fit Hole end surface is adjacent to；

Importing protrusion is fixed on the outside of first positive stop end, importing lobed interior is hollow and passes through setting in the first limit Intercommunicating pore on the end of position is connected to drug storage inner cylinder.

The beneficial effects of the utility model are: the present invention is pushed away by adjusting stroke shell and importing the assembly of shell to adjust The stroke of medicine bar, to achieve the purpose that control medicament import volume, structure is simple, and enables to operator disposably enough Medicament is imported, is greatly improved efficiency, and will not overdose.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model.

Fig. 2 is enlarged drawing at F1 in Fig. 1.

Fig. 3 is fixed cylinder structural schematic diagram.

Fig. 4 is trigger block, switchs structural schematic diagram at slot.

Specific embodiment

The utility model is described in further detail with reference to the accompanying drawings and examples:

Referring to figures 1-4, a kind of needleless introducing apparatus of adjustable dosage, including, stroke shell 110 imports shell 210, It imports shell 210 to be packed into the stroke inner cavity 111 of stroke shell 110, and imports 210 outer wall of shell and 110 inner wall of stroke shell It is assembled by threaded engagement；

The stroke inner cavity 111 is fixed with stroke limit cylinder 120, stroke limit cylinder 120 far from 210 one end of shell is imported Inner hollow, and stroke limit cylinder 120 is fixed with ampoule mounting cylinder 130, ampoule mounting cylinder far from 210 one end of shell inside is imported 130 inner walls, which pass through screw thread and screw drum outer wall, screws assembly；

It is installation cavity 211 inside the importing shell 210, is fixed with guide cylinder 220, guide cylinder 220 in installation cavity 211 On be provided with pressure pilot hole 222, switch slot 223, switch hole 221, be mounted platform 224, the pressure pilot hole 222 with The axis 510 that presses assembles, and pressure axis 510 can be moved up in 222 axis of pressure pilot hole, and the pressure axis 510 is limited close to stroke Position 120 one end of cylinder is provided with press fit hole 511；

Limiting stand 512 is additionally provided on the pressure axis 510, limiting stand 512 is held out against with 630 one end of trigger block, hingedly Pin 641 passes through trigger block 630 and switch 223 side wall of slot assembly, so that trigger block 630 and switch slot 223 are hinged；

The trigger block 630 far from being equipped with drive pin 642 on 512 one end of limiting stand, the drive pin 642 with It releases inclined-plane 611 to be adjacent to, the releasing inclined-plane 611 is arranged on switch lever 610,611 both ends of the releasing inclined-plane difference With tip surface 612, switch side 413 connect, the switch lever 610 releasing inclined-plane 611 at thickness from tip surface 612 to Switch side 413 gradually increases；

It is adjacent on the outside of the tip surface 612 and switch restoring board 620,620 inside of switch restoring board and switch spring 340 One end assembly is fixed, and 340 other end of switch spring and the assembly of 221 end face of switch hole are fixed, the trigger block 630 and switch slot Torsional spring 650 is provided between side, torsional spring 650 is sleeved on drive pin 620, and both ends respectively with trigger block 630, switch slot The assembly of 223 side walls is fixed, and torsional spring 650 makes trigger block 630 centered on swivel pin 641 to far from stroke shell 110 for generating The power of direction rotation, so that 630 bottom of trigger block is caught in limiting stand 512；

The pressure axis 510 is far from being provided with the first pressure spring mounting post 520, institute on 511 one end of press fit hole The the first pressure spring mounting post 520 and the assembly of pressure 320 one end of spring stated are fixed, and pressure 320 other end of spring is applied with second The assembly of pressing spring mounting post 530 is fixed, and the second pressure spring mounting post 530 is fixed on pressing ring 540 close to pressure spring 320 On end face；

The pressing ring 540 is provided with cooperation pressure holes 541, the switch on the end face far from pressure spring 320 Switch lever 610 is installed, switch lever 610 is fixed far from assembly on the inside of 611 one end of inclined-plane and switch ring 240 is released in hole 221；

It is provided with through hole 241 on the switch ring 240, resets annular groove 242,241 penetrating switch of through hole Ring 240 is connected to platform 224 is mounted, and buckle locating part 330 is fixed on the limit installation platform 224, buckles locating part 330 one end and the limit installation assembly of platform 224 are fixed, are provided with retreat stop block 331,331 inside of retreat stop block and pressing ring on the other end 540 end face clampings, to prevent pressing ring 540 from passing through retreat stop block 331 from left to right；

The importing shell 210 fixes restraining position ring block 212 on switch 240 one end of ring, and stop collar 212 is packed into multiple In the annular groove 242 of position, and spring-assisted reduction 310 is installed between 212 end face of stop collar and reset 242 inner face of annular groove, it is described 240 open end of switch ring and stroke ring 230 on the inside of assemble and fix, stroke ring 230 can shell 210 is axial to be moved up importing It is dynamic, and stroke ring 230 and stop collar 212 cooperate to prevent switch ring 240 to be detached from and import shell 210.

It further include ampoule, ampoule includes medicine-storing tube 410, is drug storage inner cylinder 411 inside the medicine-storing tube 410, and drug storage 411 one end of inner cylinder and the sealing of piston 440 are assembled, and piston 440 and the assembly of 450 one end of drug-push lever are fixed；

410 both ends of medicine-storing tube are respectively arranged with the first positive stop end 420, the second positive stop end 460, the second positive stop end 460 screw cylinder 470 far from being fixed on 410 one end of medicine-storing tube, screw on the inside of cylinder 470 and ampoule mounting cylinder 130 through screw thread rotation It attaches together with fixing, the second positive stop end 460, which is used to limit, at this time screws the maximum distance that cylinder 470 is packed into ampoule mounting cylinder 130；

After 450 other end of drug-push lever passes through the second positive stop end 460, screws cylinder 470 in loading press fit hole 511 And it is adjacent to 511 end face of press fit hole；

It is fixed with importing protrusion 430 on the outside of first positive stop end 420, imports raised 430 inner hollows and by setting The intercommunicating pore 421 set on the first positive stop end 420 is connected to drug storage inner cylinder 411.

When original state, pressure spring 320 is not pressurized, and pressing ring 540 is located at 331 right side of retreat stop block, and trigger block 630 fills Enter limitation pressure in limiting stand axially to move left, releases inclined-plane 611 and be adjacent to drive pin 642, is i.e. Fig. 1 state.

In use, first will the circumferential pressure spring compression of pressure, until pressing ring reaches Fig. 1 state, this process can be with In a kind of Chinese invention patent application using " adjustable needleless introducing apparatus component of dosage " declared on the same day with this case, entitled " pressure applicator " carry out；

Finally, being pressed on protrusion 430 is imported on the skin for needing to import, ring 710 will be switched to pressure 510 direction of axis It pushes, drives drive pin to rotate down so that releasing inclined-plane 611, that is, driving trigger block 630 is using swivel pin as the center inverse time Needle rotates, until trigger block 630 and limiting stand 512 are detached from, at this point, the pressure of pressure spring presses to pressure axis abrupt release Axis acts directly on the pressure for the spring that in pressure transmission to drug-push lever 450, finally presses on the drug in drug storage inner cylinder 411, Drug obtains momentary pulse pressure, and is entered in pore by this pressure, imports skin.

Preferably, the stroke shell, import on outer shell outer wall and be provided with scale, can be by importing outside shell and stroke The corresponding scale in shell end face reads or extrapolates stroke limit cylinder 120 and the distance between the axis 510 that presses, that is, drug-push lever Stroke.

Place is not described in detail for the utility model, is the well-known technique of those skilled in the art.

The preferred embodiments of the present invention have been described in detail above.It should be appreciated that the ordinary skill people of this field Member according to the present utility model can conceive without creative work makes many modifications and variations.Therefore, all this technology necks Technical staff passes through logic analysis, reasoning or limited reality according to the design of the utility model on the basis of existing technology in domain Available technical solution is tested, it all should be within the scope of protection determined by the claims.

Claims (10)

1. a kind of needleless introducing apparatus of adjustable dosage, including, stroke shell imports shell, is packed into it is characterized in that: importing shell It is intracavitary in the stroke of stroke shell；

The stroke inner cavity is fixed with stroke limit cylinder, stroke limit cylinder inner hollow, and stroke far from shell one end is imported Position-limiting drum is fixed with ampoule mounting cylinder far from shell one end inside is imported, and ampoule mounting cylinder inner wall is by screw thread and screws drum outer wall Screw assembly；

The importing interior of shell is installation cavity, is fixed with guide cylinder in installation cavity, be provided on guide cylinder pressure pilot hole, It switchs slot, switch hole, platform is mounted, the pressure pilot hole and pressure axis assembly, the pressure axis are limited close to stroke Position cylinder one end is provided with press fit hole；

It is additionally provided with limiting stand on the pressure axis, limiting stand is held out against with trigger block one end, and swivel pin passes through trigger block and opens Close groove sidewall assembly；

Far from drive pin is equipped on limiting stand one end, the drive pin is adjacent to the trigger block with inclined-plane is released, described Releasing inclined-plane be arranged on switch lever；

The pressure axis is far from being provided with the first pressure spring mounting post on the one end of press fit hole, the first pressure bullet Spring mounting post and pressure spring one end assembly are fixed, and the pressure spring other end and the second pressure spring mounting post assembly are fixed, the Two pressure spring mounting posts are fixed on pressing ring on the end face of pressure spring；

The pressing ring is provided with cooperation pressure holes on the end face far from pressure spring, and switch is equipped in the switch hole Bar；

Buckle locating part is fixed on the limit installation platform, buckle locating part one end and limit installation platform assembly are fixed, another Retreat stop block, retreat stop block inside and the clamping of pressing ring end face are provided on one end.

2. the needleless introducing apparatus of adjustable dosage as described in claim 1, it is characterized in that: importing outer shell outer wall and stroke shell Inner wall is assembled by threaded engagement.

3. the needleless introducing apparatus of adjustable dosage as described in claim 1, it is characterized in that: the releasing inclined-plane both ends are distinguished It is connect with tip surface, switch side, the switch lever is gradually increased by tip towards switch-side face in the thickness released at inclined-plane Add.

4. the needleless introducing apparatus of adjustable dosage as claimed in claim 3, it is characterized in that: the tip surface and switch reset It is adjacent on the outside of plate, is fixed on the inside of switch restoring board with the assembly of switch spring one end, the switch spring other end and switch hole end surface dress With fixation.

5. the needleless introducing apparatus of adjustable dosage as described in claim 1, it is characterized in that: the trigger block and switch slot side Torsional spring is provided between face, torsion spring set is on drive pin, and both ends are fixed with trigger block, switch groove sidewall assembly respectively.

6. the needleless introducing apparatus of adjustable dosage as described in claim 1, it is characterized in that: switch lever is far from releasing inclined-plane one end It is fixed with assembly on the inside of switch ring, through hole is provided on the switch ring, resets annular groove, the through hole penetrating switch Ring is connected to platform is mounted.

7. the needleless introducing apparatus of adjustable dosage as claimed in claim 6, it is characterized in that: the importing shell is close to switch Restraining position ring block is fixed on ring one end, stop collar, which is packed into, to be resetted in annular groove, and is pacified between stop collar end face and reset annular groove inner face Equipped with spring-assisted reduction, assembly is fixed on the inside of the switch ring open end and stroke ring, stroke ring and stop collar cooperate with It prevents switch ring to be detached from and imports shell.

8. the needleless introducing apparatus of adjustable dosage as described in claim 1, it is characterized in that: buckle locating part has elasticity, and When original state, tilted to housing axis is imported.

9. the needleless introducing apparatus of adjustable dosage as described in claim 1, it is characterized in that: outside the stroke shell, importing Scale is provided on shell outer wall.

10. the needleless introducing apparatus of adjustable dosage as described in claim 1, it is characterized in that: further including ampoule, ampoule includes storage Cylindrantherae, the medicine-storing tube inside is drug storage inner cylinder, and drug storage inner cylinder one end and piston seal assemble, piston and drug-push lever one end Assembly is fixed；

The medicine-storing tube both ends are respectively arranged with the first positive stop end, the second positive stop end, and the second positive stop end is far from medicine-storing tube one end On be fixed with and screw cylinder, screw on the inside of cylinder and ampoule mounting hole through threaded engagement assembly fixation；

The drug-push lever other end passes through the second positive stop end, screw be packed into after cylinder in press fit hole and with press fit nose end Face paste is tight；

Importing protrusion is fixed on the outside of first positive stop end, importing lobed interior is hollow and by being arranged in the first positive stop end On intercommunicating pore be connected to drug storage inner cylinder.