CN2936281Y - Propelling injector for no-needle injection - Google Patents
Propelling injector for no-needle injection Download PDFInfo
- Publication number
- CN2936281Y CN2936281Y CN 200620105021 CN200620105021U CN2936281Y CN 2936281 Y CN2936281 Y CN 2936281Y CN 200620105021 CN200620105021 CN 200620105021 CN 200620105021 U CN200620105021 U CN 200620105021U CN 2936281 Y CN2936281 Y CN 2936281Y
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- cavity
- piston
- sliding tray
- spring
- injector
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Abstract
The utility model discloses a pusher for injection without needles, which belongs to the technical field of hypodermic injection without needles in medical apparatus, comprising an outer shell with a cavity. A power unit with a trigger device is positioned at the back of the cavity, and a piston assembly is arranged at the front end of the power unit. The piston assembly comprises a piston stick and a piston arranged at the front end of the piston stick. At least three sliding grooves are arranged on the wall at the front end of the cavity, and a sliding stripe is positioned in the circumference of the piston corresponding to the sliding grooves. The utility model has the advantages of simple structure, compact and good performance.
Description
Technical field
The utility model discloses a kind of injector that is used for Needleless injection, belong to the technical field of subcutaneous needleless doser in the medical device.
Background technology
Injection for curing is widely used at the mankind's medical field, but traditional needle injection that has exists the problem that some can't be avoided.Infectious disease transmission, syringe needle infect such as easily causing, the incorrect processing of filthy syringe needle, needle sharing injection, pain, pin probably, and long term injections produces subcutaneous nodule etc.Therefore from 1866, French scientist was attempted the needleless technology first.But early stage needleless injector does not form real commerce and uses owing to design and make.After nineteen ninety, needleless injector just really moves to maturity.Needleless injector produces the subcutaneous tissue that high-speed jet directly enters into the people by the powered medicine.
The needleless injector of a standard is made up of two parts usually: is used for sucking medicine, splendid attire medicine and launches the injection tube of medicine, and the power set that can produce thrust when triggering.The needleless injector of clinical practice at present is owing to consider the convenience of operation, common design lighter.Comparatively general form is to be designed to lip pencil, props up skin during injection, and trigger switch is injected.Because needleless injector requires (generally to use spring to do the injector of power than higher to power, the pressure that spring produces is more than 10 kilograms), the requirement of corresponding power generation and propulsion plant (as spring, piston, cavity) is also than higher, thereby make the accuracy of manufacture and material anti-impact force that strict requirement also be arranged, manufacturing cost is strengthened, limited the popularization of needleless injector.The high pressure that spring produces makes equally the complexity that trigger mechanism becomes can increase the wearing and tearing that trigger the position simultaneously, reduces service life.
The utility model content
It is a kind of simple in structure, compact that the purpose of this utility model is to provide, the injector that is used for Needleless injection that serviceability is good.
For achieving the above object, the technical scheme that this utility model adopted is: a kind of injector that is used for Needleless injection, comprise the shell that has cavity, the cavity rear end is provided with the power set of band flip flop equipment, the front end of power set is provided with piston component, piston component is made up of piston rod and the piston that is positioned at the piston rod front end, and described cavity front bulkhead is provided with and is no less than 3 sliding tray, on the periphery of piston, the position of corresponding sliding tray is provided with slider bar.
As of the present utility model preferred, described sliding tray is to be combined to form by several lamellar slide masses that are installed on the cavity front bulkhead, and the lamellar slide mass end of sliding tray import department is the inclination angle; The lamellar slide mass end of the corresponding sliding tray of the guide end of slider bar import department also is the inclination angle.
Described power set comprise spring base and spring, and spring base is made up of screwed base on the periphery and the cylinder that is fixedly arranged on the base; Spring is fixedly arranged on the cylinder; The position of corresponding whorl of base also is provided with screw thread on the cavity wall.
Described flip flop equipment comprises the single pole that is arranged on the shell, and single pole one end is installed with the return spring that is connected with shell, and the other end is installed with barrier sheet, and barrier sheet passes shell and communicates with cavity, and barrier sheet is positioned at sliding tray import department.
Described single pole one end also is provided with locking mechanism, and locking mechanism comprises that two mutually flexibly connect and the connecting rod and the motion bar of belt length strip groove, and motion bar is provided with two bearing pins that can move with the strip groove fit respectively.
Described cavity is interior, the end of sliding tray is installed with and stops circle, and stops that the periphery of circle is provided with the corresponding sulculus of size, number and slider bar.
Be installed with threaded union joint on the front bulkhead of described shell, union joint communicates with cavity.
The described injector that is used for Needleless injection also comprises spring reverse motion, and spring reverse motion comprises casing and the pusher head that is installed on the piston nose wall; Be installed with band in the casing and push the nut of screw mandrel and the bevel gear with axes at right angles that is meshed with nut; Cabinet exterior is provided with handwheel, and handwheel links by drive link and bevel gear with axes at right angles; On the inwall of casing bottom and nut below is equipped with the stop bit device; The front end that pushes screw mandrel is provided with the propelling movement head, and the rear end is provided with stop block; Be evenly distributed with several triangle tangent plane grooves on the periphery of pusher head; Push on the periphery of head, the position of corresponding triangle tangent plane groove is provided with triangle body, triangle body and triangle tangent plane groove are coupled.
This utility model is used for the injector of Needleless injection, being provided with of sliding tray and slider bar guaranteed motive force fully with axially be consistent, improved the stability of motive force; The design that the lamellar slide mass end that the lamellar slide mass end of sliding tray import department is the corresponding sliding tray of the guide end import department of inclination angle and slider bar also is the inclination angle makes slider bar enter and withdraw from sliding tray easily, make barrier sheet simultaneously stressed by forward become cut sth. askew to, thereby reduced the stressed of barrier sheet, made the easier operation of flip flop equipment.
Below in conjunction with the drawings and specific embodiments this utility model is described in further detail.
Fig. 1 is the structural representation of this utility model specific embodiment;
Fig. 2 constitutes the structural representation of needleless injector with the injection tube socket for Fig. 1 before injecting;
Fig. 3 is that injection tube was in the structural representation of injecting when finishing after the flip flop equipment of Fig. 2 was opened;
Fig. 4 pushes back to the structural representation that original position is blocked for the propelling movement screw mandrel of the spring reverse motion after injecting with piston;
Fig. 5 is the perspective view of piston component;
Fig. 6 is the structural representation of facing of Fig. 5;
Fig. 7 is the right view of Fig. 6;
Fig. 8 is the perspective view of slider bar;
Fig. 9 is the structural representation of facing of Fig. 8;
Figure 10 is the schematic top plan view of Fig. 9;
Figure 11 is the perspective view of pusher head;
Figure 12 is the structural representation of facing of Figure 11;
Figure 13 looks sketch map for the right side of Figure 12;
Figure 14 is pusher head and the coupled structure sketch map that pushes head;
Figure 15 is the expansion floor map that is installed in several lamellar slide mass combinations on the cavity front bulkhead;
Figure 16 is the work structuring sketch map of Figure 15, and has shown slider bar and the barrier sheet structure under being in the lock state;
Figure 17 is the perspective view that stops circle;
Figure 18 is the structural representation of facing of Figure 17;
Figure 19 is in structural representation under the opening for locking mechanism;
Figure 20 is in structural representation under the closed condition for locking mechanism;
Figure 21 is spring reverse motion and the bonded structural representation of injector.
Specific embodiment
As shown in Figure 1, the injector that this utility model is used for Needleless injection comprises the shell 19 that has cavity 18, be installed with threaded union joint 1 on the front bulkhead of shell 19, union joint 1 communicates with cavity 18, cavity 18 rear ends are provided with the power set of band flip flop equipment, the front end of power set is provided with piston component, and piston component is made up of piston rod 16 and the piston 15 that is positioned at piston rod 16 front ends.Cavity 18 front bulkheads are provided with 3 sliding trays 6.Shown in Fig. 5,6,7, on the periphery of piston 15, the position of corresponding sliding tray 6 also is provided with 3 slider bars 14.Shown in Figure 15,16, sliding tray 6 is to be combined to form by several lamellar slide masses 5 that are installed on cavity 18 front bulkheads, and lamellar slide mass 5 ends of sliding tray 6 import departments are the inclination angle; Shown in Fig. 8,9,10, lamellar slide mass 5 ends of the corresponding sliding tray of the guide end of slider bar 14 6 import departments also are the inclination angle.Power set comprise spring base 20 and spring 17, and spring base 20 is made up of screwed base 21 on the periphery and the cylinder 23 that is fixedly arranged on the base 21; Spring 17 is fixedly arranged on the cylinder 23; The position of corresponding base 21 screw threads also is provided with screw thread on cavity 18 walls, and spring base 20 just can be installed in by the screw thread on the base 21 on cavity 18 walls.Cavity 18 ends, promptly base 21 rear ends are sealed with closing cap 22.Flip flop equipment comprises the single pole 10 that is arranged on the shell 19, single pole 10 1 ends are installed with the return spring 7 that is connected with shell 19, the other end is installed with barrier sheet 12, and barrier sheet 12 passes shell 19 and communicates with cavity 18, and barrier sheet 12 is positioned at sliding tray 6 import departments.
Shown in Figure 17,18, cavity 18 ends interior, sliding tray 6 are installed with and stop circle 3, and stop that the periphery of circle 3 is provided with size, number and slider bar 14 corresponding sulculuses 29.
Shown in Figure 19,20, single pole 10 1 ends are provided with locking mechanism, locking mechanism comprises the connecting rod 9 and the motion bar 8 of two mutual flexible connections and belt length strip groove 25, motion bar 8 is provided with two difference can cooperate the bearing pin 2 that moves with strip groove 25, and one of them connecting rod 9 is fixed on single pole 10.
The injector that this utility model is used for Needleless injection also includes spring reverse motion.As shown in figure 21, spring reverse motion comprises casing 36 and the pusher head 13 that is installed on piston 15 front bulkheads.Be installed with band in the casing 36 and push the nut 32 of screw mandrel 27 and the bevel gear with axes at right angles 33 that is meshed with nut 32.Casing 36 outer walls are provided with handwheel 34, and handwheel 34 links by drive link 37 and bevel gear with axes at right angles 33.On the casing 36 bottom inwalls and nut 32 belows are equipped with stop bit device 39.The front end that pushes screw mandrel 27 is provided with and pushes 26, and the rear end is provided with stop block 35.Shown in Figure 11,12,13, be evenly distributed with several triangle tangent plane grooves 24 on the periphery of pusher head 13.As shown in figure 14, push on 26 the periphery, the position of corresponding triangle tangent plane groove 24 is provided with triangle body 28, triangle body 28 is coupled with triangle tangent plane groove 24.
When this utility model is used for the injector work of Needleless injection, as shown in Figure 2, use front spring 17 to be in compressive state, a slider bar 14 on the piston 15 is blocked sheet 12 retainings in sliding tray 6 import departments.As shown in figure 20, the locking mechanism of this moment is in the lock state, maloperation in the time of can preventing to inject, flip flop equipment under being in the lock state is stiff, be that single pole 10 is stiff, return spring 7 can not be pressed down: motion bar 8 right dialling, mobilizable connecting rod 9 down extends to when propping up shell 19, just is in the lock state.
Before the injection, the injection tube 30 that will have medicament is received on the shell 19 by threaded union joint 1 cover.
As shown in figure 19, earlier locking mechanism is opened during injection, be about to motion bar 8 left sides and dial, mobilizable connecting rod 9 just can break away from shell 19.As shown in Figure 3, press single pole 10 1 ends that are connected with return spring 7, barrier sheet 12 is lifted.At this moment, because of lamellar slide mass 5 ends of sliding tray 6 import departments are the inclination angle, and lamellar slide mass 5 ends of the corresponding sliding tray of the guide end of slider bar 14 6 import departments also are the inclination angle, therefore the slider bar 14 on the piston 15 is lifted instantaneous at barrier sheet 12, directly enter sliding tray 6, and need the help of thrust hardly.Piston 15 is sliding in sliding tray 6 under the thrust of spring 17 fast.When sliding to certain distance, the push-pull bar 31 on the bump injection tube 30 produces high pressure on medicament, and medicament enters subcutaneous by the aperture high-speed jet of injection tube 30 front ends.Piston 15 finally is blocked circle and 3 blocks under the effect of spring 17: pusher head 13 can directly be passed and be stopped circle 3, encloses 3 the internal diameter external diameter greater than pusher head 13 because of stopping; The part that slider bar 14 guide ends protrude in piston 15 front bulkheads enters in the sulculus 29 that stops on circle 3 peripheries just; Stop that enclosing 3 selects the rubber material for use, the impulsive force of available buffer piston 15.After the injection, flip flop equipment returns to the state before the injection under the effect of return spring 7, and promptly barrier sheet 12 stretches into cavity 18 downwards.
Injector should make spring 17 reset before using next time, and the slider bar 14 on the piston 15 must return to the import department of sliding tray 6.As shown in figure 21, injector is installed on casing 36 upper ends by holder 38.Shown in Fig. 4,21, push 26 and enter in the cavity 18, triangle body 28 and triangle tangent plane groove 24 on the pusher head 13 are coupled one by one; Then rotate handwheel 34, by drive link 37 bevel gear with axes at right angles 33 is rotated, thereby driving nut 32 rotates, the rotation of nut 32 has promoted propelling movement screw mandrel 27 advances, and pushes screw mandrel 27 and produces one along the tangential thrust of circumference to pushing 26 again, and piston 15 falls back simultaneously, run into the stop bit device 39 of nut 32 belows up to stop block 35, handwheel 34 just stops operating, this moment slider bar 14 into lamellar slide mass 5 ends of falling back just, slider bar 14 just is blocked sheet 12 and is stuck in sliding tray 6 import departments.Injector has been got back to the state before the injection like this.
Resetting of spring reverse motion only needs backward rotation handwheel 34, and the stop bit device of running on the casing 36 bottom inwalls up to stop block 35 39 gets final product.
Claims (8)
1. injector that is used for Needleless injection, comprise the shell (19) that has cavity (18), cavity (18) rear end is provided with the power set of band flip flop equipment, the front end of power set is provided with piston component, piston component is made up of piston rod (16) and the piston (15) that is positioned at piston rod (16) front end, it is characterized in that described cavity (18) front bulkhead is provided with the sliding tray (6) that is no less than 3, on the periphery of piston (15), the position of corresponding sliding tray (6) is provided with slider bar (14).
2. according to the described injector that is used for Needleless injection of claim 1, it is characterized in that described sliding tray (6) is to be combined to form by several lamellar slide masses (5) that are installed on cavity (18) front bulkhead, lamellar slide mass (5) end of sliding tray (6) import department is the inclination angle; Lamellar slide mass (5) end of the corresponding sliding tray (6) of the guide end of slider bar (14) import department also is the inclination angle.
3. according to the described injector that is used for Needleless injection of claim 1, it is characterized in that described power set comprise spring base (20) and spring (17), spring base (20) is made up of screwed base (21) on the periphery and the cylinder (23) that is fixedly arranged on the base (21); Spring (17) is fixedly arranged on the cylinder (23); The position of corresponding base (21) screw thread also is provided with screw thread on cavity (18) wall.
4. according to the described injector that is used for Needleless injection of claim 1, it is characterized in that described flip flop equipment comprises the single pole (10) that is arranged on the shell (19), single pole (10) one ends are installed with the return spring (7) that is connected with shell (19), the other end is installed with barrier sheet (12), barrier sheet (12) passes shell (19) and communicates with cavity (18), and barrier sheet (12) is positioned at sliding tray (6) import department.
5. according to the described injector that is used for Needleless injection of claim 4, it is characterized in that described single pole (10) one ends are provided with locking mechanism, locking mechanism comprises the connecting rod (9) and the motion bar (8) of two mutual flexible connections and belt length strip groove (25), and motion bar (8) is provided with two difference can cooperate the bearing pin (2) that moves with strip groove (25).
6. according to claim 1 or the 2 described injector that are used for Needleless injection, it is characterized in that described cavity (18) is interior, the end of sliding tray (6) is installed with and stops circle (3), and stops that the periphery of circle (3) is provided with the corresponding sulculus of size, number and slider bar (14) (29).
7. according to claim 1 or the 4 described injector that are used for Needleless injection, it is characterized in that being installed with threaded union joint (1) on the front bulkhead of described shell (19), union joint (1) communicates with cavity (18).
8. according to the described injector that is used for Needleless injection of claim 1, it is characterized in that also comprising that spring reverse motion, spring reverse motion comprise casing (36) and be installed in pusher head (13) on piston (15) front bulkhead; Be installed with band in the casing (36) and push the nut (32) of screw mandrel (27) and the bevel gear with axes at right angles (33) that is meshed with nut (32); Casing (36) outer wall is provided with handwheel (34), and handwheel (34) links by drive link (37) and bevel gear with axes at right angles (33); On the inwall of casing (36) bottom and nut (32) below is equipped with stop bit device (39); The front end that pushes screw mandrel (27) is provided with and pushes head (26), and the rear end is provided with stop block (35); Be evenly distributed with several triangle tangent plane grooves (24) on the periphery of pusher head (13); Push on the periphery of head (26), the position of corresponding triangle tangent plane groove (24) is provided with triangle body (28), triangle body (28) is coupled with triangle tangent plane groove (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620105021 CN2936281Y (en) | 2006-06-22 | 2006-06-22 | Propelling injector for no-needle injection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620105021 CN2936281Y (en) | 2006-06-22 | 2006-06-22 | Propelling injector for no-needle injection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2936281Y true CN2936281Y (en) | 2007-08-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620105021 Expired - Fee Related CN2936281Y (en) | 2006-06-22 | 2006-06-22 | Propelling injector for no-needle injection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2936281Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103816586A (en) * | 2014-02-28 | 2014-05-28 | 华南理工大学 | Mechanical needle-free injection propulsion device |
| CN105477749A (en) * | 2016-01-13 | 2016-04-13 | 北京步腾医学科技有限公司 | Disposable needle-free spring syringe |
| CN108042886A (en) * | 2017-12-27 | 2018-05-18 | 四川护理职业学院 | A kind of simple needleless injector |
| CN110368575A (en) * | 2019-08-29 | 2019-10-25 | 赵俊文 | A kind of combined type gynaecology drug pushing device |
| CN110420379A (en) * | 2019-08-29 | 2019-11-08 | 赵俊文 | A kind of combined type gynecological administration device |
| CN113029727A (en) * | 2021-04-26 | 2021-06-25 | 常州大学 | Adhesion testing device capable of forming regular spherical hydrate particles |
| CN114949458A (en) * | 2022-03-08 | 2022-08-30 | 苏州肯美特设备集成有限公司 | Needleless injection device |
-
2006
- 2006-06-22 CN CN 200620105021 patent/CN2936281Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103816586A (en) * | 2014-02-28 | 2014-05-28 | 华南理工大学 | Mechanical needle-free injection propulsion device |
| CN103816586B (en) * | 2014-02-28 | 2016-04-13 | 华南理工大学 | A kind of mechanical type Needleless injection propulsion plant |
| CN105477749A (en) * | 2016-01-13 | 2016-04-13 | 北京步腾医学科技有限公司 | Disposable needle-free spring syringe |
| CN108042886A (en) * | 2017-12-27 | 2018-05-18 | 四川护理职业学院 | A kind of simple needleless injector |
| CN110368575A (en) * | 2019-08-29 | 2019-10-25 | 赵俊文 | A kind of combined type gynaecology drug pushing device |
| CN110420379A (en) * | 2019-08-29 | 2019-11-08 | 赵俊文 | A kind of combined type gynecological administration device |
| CN110420379B (en) * | 2019-08-29 | 2024-01-05 | 珠海亿立达电子设备有限公司 | Combined gynecological drug delivery device |
| CN113029727A (en) * | 2021-04-26 | 2021-06-25 | 常州大学 | Adhesion testing device capable of forming regular spherical hydrate particles |
| CN114949458A (en) * | 2022-03-08 | 2022-08-30 | 苏州肯美特设备集成有限公司 | Needleless injection device |
| CN114949458B (en) * | 2022-03-08 | 2024-01-05 | 苏州肯美特设备集成股份有限公司 | Needleless injection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070822 Termination date: 20100622 |