CN200987809Y - Push injector for needle free injection - Google Patents
Push injector for needle free injection Download PDFInfo
- Publication number
- CN200987809Y CN200987809Y CN 200620140489 CN200620140489U CN200987809Y CN 200987809 Y CN200987809 Y CN 200987809Y CN 200620140489 CN200620140489 CN 200620140489 CN 200620140489 U CN200620140489 U CN 200620140489U CN 200987809 Y CN200987809 Y CN 200987809Y
- Authority
- CN
- China
- Prior art keywords
- piston rod
- screw thread
- piston
- needleless injection
- bolt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000002347 injection Methods 0.000 title claims abstract description 20
- 239000007924 injection Substances 0.000 title claims abstract description 20
- 230000000295 complement effect Effects 0.000 claims description 4
- 239000003814 drug Substances 0.000 abstract description 5
- 238000011982 device technology Methods 0.000 abstract 1
- 229940079593 drug Drugs 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 206010033675 panniculitis Diseases 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007920 subcutaneous administration Methods 0.000 description 1
- 210000004304 subcutaneous tissue Anatomy 0.000 description 1
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model discloses a novel propeller for needle-free injection, which pertains to hypodermic needle-free drug device technology field in medical equipment. The present utility model comprises a shell including a chamber whose one end is arranged fixedly with a power plant installed with a reduction device and a triggering device. The power plant includes a piston arranged with a piston rod which has a spring sleeved thereon, an elastic component is disposed fixedly in said piston and periphery of the piston rod; said reduction device comprises a bolt provided with a spring reduction rotating ring installed between the elastic component and the piston rod, a thread clamp ring sleeve jointed outside the elastic component; the thread clamp ring joints immovably with the shell through a jam part; internal thread matching external thread of the bolt is provided in the elastic component. The power device of the utility model has advantages of rapid and convenient replacement, and simple and compact structure, and low cost as well.
Description
Technical field
The utility model discloses a kind of novel injector that is used for Needleless injection, belong to subcutaneous needleless doser technical field in the medical device.
Background technology
Needleless injector moves to maturity at medical field, and it is to produce 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 injector that can produce thrust when triggering.Injector comprises power set, flip flop equipment and power resetting means.And generally there are two kinds of situations in the available dynamic resetting means: one, constitute integral body with power set and flip flop equipment, still existing this spline structure is all complicated, and power set reset also inconvenient; Two, split type with power set and flip flop equipment, preposition patent " injector that is used for Needleless injection " (application number: 200620105021.0) as the applicant, be that the power resetting means constitutes an integral body separately, when the power set of injector need reset, injector can only be installed on the power resetting means after, just can finish and reset, operation is very inconvenient like this, when particularly needing to inject in batch, and injector has been divided into two independently parts, has been inconvenient to carry.
The utility model content
At above-mentioned deficiency of the prior art, this utility model provides a kind of simple in structure, power set to reset and be used for the novel injector of Needleless injection easily.
To achieve these goals, the technical scheme that this utility model adopted is: a kind of novel injector that is used for Needleless injection, comprise the housing that has chamber, chamber one end is installed with the power set of band resetting means and flip flop equipment, power set comprise the piston that has piston rod, upper cover of piston rod has spring, on the described piston, the periphery of piston rod is installed with elastic parts; Described resetting means comprises the bolt that has the spring reset turning collar between elastic parts and piston rod, is socketed in the screw thread hold-down ring of elastic parts outside, and the screw thread hold-down ring is affixed by card-bit part and housing; Elastic parts be provided with that external screw thread with bolt is complementary female thread.The female thread of elastic parts combines with the externally threaded of bolt, has realized the active homing of spring.
As the further setting of such scheme, described elastic parts is a plurality of along circumferential equally distributed elastic fin.
The inwall of described screw thread hold-down ring is and the corresponding circular arc convex-concave structure of elastic fin number.
Described inner walls is provided with projection, surpasses the compressive elastic limit of spring when the setting of projection can prevent spring reset, influences service life, play the guiding role in the time of also can moving to piston simultaneously.
Described flip flop equipment comprises handle and block, and block is provided with groove, also is provided with groove on the outer wall of corresponding elastic parts, and these two grooves can prevent to rotate condom under the situation that spring does not reset fully in conjunction with constituting ratchet, avoid maloperation.
Described screw thread hold-down ring outside is installed with condom.
The power set that this utility model is used for the novel injector of Needleless injection reset fast, convenience, and overall structure is simple, compact, and cost is low.
Description of drawings
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 is for having the structure for amplifying sketch map of the piston of piston rod and elastic fin among Fig. 1;
Fig. 3 is the structure for amplifying sketch map of bolt among Fig. 1;
Fig. 4 overlooks the structure for amplifying sketch map for condom among Fig. 1, screw thread hold-down ring, elastic fin;
Fig. 5 is the structural representation during the elastic fin pressurized among Fig. 4;
Fig. 6 is the perspective view that elastic fin cooperates with bolt;
Fig. 7 is the perspective view that flip flop equipment cooperates with piston.
Specific embodiment
As shown in Figure 1, the specific embodiment that this utility model is used for the novel injector of Needleless injection comprises the housing 9 that has chamber 8, also is provided with projection 12 on housing 9 inwalls.Chamber 8 one ends are installed with the power set of band resetting means and flip flop equipment, and the other end is installed with the capping 22 of band rubber washer 21, and injection tube 20 is fixed on the housing 9 by the flexible connection with capping 22.Power set comprise the piston 10 that has piston rod 6, are with spring 7 on the piston rod 6, on the piston 10, the periphery of piston rod 6 is installed with three elastic fins that are evenly distributed 3.As shown in Figure 7, flip flop equipment comprises handle 16 and block 17, and block 17 is provided with groove 18a, also is provided with groove 18b on the outer wall of corresponding elastic fin 3.Resetting means comprises the bolt that has spring reset turning collar 14 between elastic fin 3 and piston rod 6, is socketed in the screw thread hold-down ring 2 of elastic fin 3 outsides, and screw thread hold-down ring 2 is affixed by card-bit part 15 and housing 9.The inwall of screw thread hold-down ring 2 is and the corresponding circular arc convex-concave structure of elastic fin 3 numbers.The outside of screw thread hold-down ring 2 also is socketed with condom 5.Shown in Fig. 2,3, elastic fin 3 is provided with the female thread 14 that the external screw thread 13 with bolt 4 is complementary, and in the following time of effect that is not subjected to external force, the female thread 14 of elastic fin 3 does not contact with the external screw thread 13 of bolt 4.
Operation principle resets: shown in Fig. 1,4, condom 5 is rotated in the direction of the clock, drive 2 rotations of screw thread hold-down ring in the time of condom 5 rotations.During screw thread hold-down ring 2 rotation, because the internal diameter of three projectioies 19 of its inwall is less than the external diameter of three elastic fins 3, therefore when screw thread hold-down ring 2 rotates, elastic fin 3 pressurizeds.In addition, as shown in Figure 5, because the setting of card-bit part 15, screw thread hold-down ring 2 can only be fixed 60 ° of rotations at every turn, and the compression of 19 pairs of elastic fins 3 of projection is reached to greatest extent.As shown in Figure 6, elastic fin 3 is stressed to be pressed onto on the external screw thread 13 of bolt 4, clockwise rotate spring reset turning collar 1 this moment again and drive bolt 4 rotations, because the female thread 14 on the elastic fin 3 is complementary with the external screw thread 13 of bolt 4, so the rotation of bolt 4 can drive the inwall rising of piston rod 6 along bolt 4.Piston rod 6 is in the process that rises, because the internal diameter of bolt 4 is less than the external diameter of spring 7, so spring 7 is withstood by projection 12 up to piston 10 also being compressed gradually, this moment, handle 16 made block 17 that piston 10 is blocked under the effect of return spring 23, and return spring 23 is in reset mode.
During injector work, condom 5 is circled round 60 °, elastic fin 3 returns to original not pressured state, syringe is in state to be injected, only need during injection block 17 to be pushed aside by handle 16, the injection tube 20 on chamber 8 other ends pushed piston 10 to by compressed spring 7 under elastic acting force, finish injection process.
Claims (6)
1. novel injector that is used for Needleless injection, comprise the housing (9) that has chamber (8), chamber (8) one ends are installed with the power set of band resetting means and flip flop equipment, power set comprise the piston (10) that has piston rod (6), be with spring (7) on the piston rod (6), it is characterized in that described piston (10) is gone up, the periphery of piston rod (6) is installed with elastic parts; Described resetting means comprises the bolt that has spring reset turning collar (1) (4) that is positioned between elastic parts and the piston rod (6), the screw thread hold-down ring (2) that is socketed in the elastic parts outside, and screw thread hold-down ring (2) is affixed by card-bit part (15) and housing (9); Elastic parts be provided with that external screw thread (13) with bolt (4) is complementary female thread (14).
2. according to the described novel injector that is used for Needleless injection of claim 1, it is characterized in that described elastic parts is a plurality of along circumferential equally distributed elastic fin (3).
3. according to claim 1 or the 2 described novel injector that are used for Needleless injection, it is characterized in that the inwall of described screw thread hold-down ring (2) is and the corresponding circular arc convex-concave structure of elastic fin (3) number.
4. according to the described novel injector that is used for Needleless injection of claim 1, it is characterized in that described housing (9) inwall is provided with projection (12).
5. according to the described novel injector that is used for Needleless injection of claim 1, it is characterized in that described flip flop equipment comprises handle (16) and block (17), block (17) is provided with groove (18a), also is provided with groove (18b) on the outer wall of corresponding elastic parts.
6. according to the described novel injector that is used for Needleless injection of claim 1, it is characterized in that described screw thread hold-down ring (2) outside is installed with condom (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620140489 CN200987809Y (en) | 2006-11-30 | 2006-11-30 | Push injector for needle free injection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620140489 CN200987809Y (en) | 2006-11-30 | 2006-11-30 | Push injector for needle free injection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200987809Y true CN200987809Y (en) | 2007-12-12 |
Family
ID=38938855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620140489 Expired - Lifetime CN200987809Y (en) | 2006-11-30 | 2006-11-30 | Push injector for needle free injection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200987809Y (en) |
Cited By (5)
| 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 |
| CN104096299A (en) * | 2014-07-23 | 2014-10-15 | 杭州电子科技大学 | Therapeutic equipment for jetting small quantity of medicines to human body |
| CN105413023A (en) * | 2016-01-04 | 2016-03-23 | 苏州肯美威机械制造有限公司 | Needless injector |
| CN106422925A (en) * | 2015-07-27 | 2017-02-22 | Aap生物材料有限公司 | Mixing device, in particular for bone cement |
| CN108066854A (en) * | 2016-11-16 | 2018-05-25 | 浙江九天寰宇生物科技有限公司 | A kind of needleless hair style syringe |
-
2006
- 2006-11-30 CN CN 200620140489 patent/CN200987809Y/en not_active Expired - Lifetime
Cited By (6)
| 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 |
| CN104096299A (en) * | 2014-07-23 | 2014-10-15 | 杭州电子科技大学 | Therapeutic equipment for jetting small quantity of medicines to human body |
| CN106422925A (en) * | 2015-07-27 | 2017-02-22 | Aap生物材料有限公司 | Mixing device, in particular for bone cement |
| CN105413023A (en) * | 2016-01-04 | 2016-03-23 | 苏州肯美威机械制造有限公司 | Needless injector |
| CN108066854A (en) * | 2016-11-16 | 2018-05-25 | 浙江九天寰宇生物科技有限公司 | A kind of needleless hair style syringe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HENAN SHUGUANG MEDICAL EQUIPMENT CO., LTD. Free format text: FORMER OWNER: CHEN KAI Effective date: 20111027 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 312000 SHAOXING, ZHEJIANG PROVINCE TO: 462000 LUOHE, HENAN PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20111027 Address after: The coastal city of Luohe City, Henan Province, Yuanhui District Xiangjiang road 462000 Patentee after: Henan Shuguang Jianshi Medical Equipment Group Co., Ltd. Address before: 102 room 11, pearl garden, Yue Yue District, Zhejiang, Shaoxing, 312000 Patentee before: Chen Kai |
|
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: Luohe City, Henan province 462000 Yuanhui District Riverside Metro Xiangjiang Road Patentee after: Henan Shugang Jianshi Medical Devices Group Co., Ltd. Address before: The coastal city of Luohe City, Henan Province, Yuanhui District Xiangjiang road 462000 Patentee before: Henan Shuguang Jianshi Medical Equipment Group Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20071212 |
|
| EXPY | Termination of patent right or utility model |