CN201108643Y - Push shot device for liquid non-needle injection - Google Patents
Push shot device for liquid non-needle injection Download PDFInfo
- Publication number
- CN201108643Y CN201108643Y CNU2007201927208U CN200720192720U CN201108643Y CN 201108643 Y CN201108643 Y CN 201108643Y CN U2007201927208 U CNU2007201927208 U CN U2007201927208U CN 200720192720 U CN200720192720 U CN 200720192720U CN 201108643 Y CN201108643 Y CN 201108643Y
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- China
- Prior art keywords
- propelling
- elastic
- needleless injection
- piston rod
- elastic fin
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- 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.)
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Abstract
The utility model discloses a push-type injection device that is used for liquid needle-free injection, and belongs to the technological field of hypodermic needle-free medicine feeding devices of medical appliances. The device comprises a shell that is provided with a chamber; one end of the chamber is fixedly provided with a power device that is provided with a resetting device and a trigger device; the outside of the shell is provided with a secure sleeve that can move along the shaft; the power device comprises a piston that has a piston rod that is sleeved with a spring; the resetting device comprises an elastic component; one end of the elastic component is closed and the other end is provided with a plurality of elastic fins that are distributed uniformly along the circle; the inside of the elastic fins is provided with an internal thread that meshes the external thread of the piston rod; a resetting rotary ring is fixedly connected with the elastic component through a connecting sleeve; the elastic fins are coated by a pressing ring that is connected with the elastic fins in a sliding way; the trigger device comprises a handle and a blocking element, which are arranged on the shell. The power device can be reset quickly and conveniently; the whole structure is simple and compact; and the cost is low.
Description
Technical field
The utility model discloses a kind of device of propelling that is used for needleless injection of liquids, belong to subcutaneous needleless doser technical field in the medical device.
Background technology
The needleless injection of liquids technology 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.International Standards Organization (ISO) has issued the Needleless injection device standard (ISO21649:2006) at clinical use in 2006.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 (ampoule) of medicine, and the device of propelling that can produce thrust when triggering.Propel device and comprise power set, flip flop equipment.Power is produced by the gas or the spring of compression usually.Produce propelling device and using repeatedly usually of power by spring, need the power resetting means.The preposition patent of applicant " device of propelling that is used for the needleless injection of liquids " (patent No.: ZL200620140489.3) described a kind of the engagement with the bolt thread that has spring and carried out the device that power resets by elastic fin, there is following shortcoming in the structure of this device: because elastic fin is an one with propelling bar, in injection process, spring must also launch away the elastic fin structural member, increased motion ram weight like this, make product propel the excessive inertia of end back generation, influence injection effect.In addition, the hold-down ring structure of circumferentially rotating has increased the radial dimension of injector.Simultaneously, said structure has also increased the requirement on machining accuracy of propelling device.
The utility model content
Deficiency at above-mentioned existing project organization, the purpose of this utility model is based on the improvement that first to file ZL200620140489.3 has done, and to provide that a kind of structure is more simple, power set reset convenient, the device of propelling that is used for needleless injection of liquids of injection better effects if.
The concrete technical scheme that this utility model adopted is: a kind of device of propelling that is used for needleless injection of liquids, comprise the housing 1 that has chamber 2, one end of chamber 2 is a dispensing end, the other end is equipped with the power set 5 of band resetting means 3 and flip flop equipment 4, it is characterized in that: power set 5 comprise the piston 52 that has piston rod 51, be with spring 53 on the piston rod 51, be provided with back-up ring 54 at an end of spring 53, piston rod 51 front ends offer external screw thread 511;
Resetting means 3 comprises an elastic parts 31, the sealing of elastic parts 31 1 ends, the other end offer into several along circumferential equally distributed elastic fin 310, elastic fin 310 inboards offer the female thread 311 that is meshed with piston rod 51 external screw threads 511, and the turning collar 33 that resets is connected by adapter sleeve 32 and elastic parts 31; Be with hold-down ring 34 on elastic fin 310, for being slidingly connected, hold-down ring 34 is connected by push-pull piece 35 and the condom 36 that is installed on the housing 1 between hold-down ring 34 and the elastic fin 310; Flip flop equipment 4 comprises handle 41 and the block 42 that is installed on the housing 1, and block 42 has the projection 421 towards chamber 2.
Of the present utility modelly further be set to:
Described piston 52 is preferably designed to oval or other the non-round shapes that cooperate with cavity geometry, and the purpose of this kind design is to prevent to reset when rotating, and piston rod 51 and then rotates.
The outside of described elastic fin 310 is provided with the step 312 on band inclined plane 313, and the quantity of elastic fin 310 is no less than 2 at least, and elastic fin 310 is made as three in the present embodiment, and its advantage is that fin has enough elasticity and stressed even; The female thread of elastic fin and the external screw thread that cooperates with it are made as two or three-start screw, and its advantage is to reduce the number of turns of the required rotation that resets.
Described adapter sleeve 32 can be designed to compressing member, is fitted in the cavity 2 of injector shell 1 rear end;
This utility model is compared with applicant's preposition patent, this utility model is separated elastic fin and impacting body (bolt), and elastic fin towards opposite with preposition patent, the hold-down ring of the convex-concave structure of the circumferential movement of preposition patent changes the straight tube hold-down ring that seesaws into.The rear portion adopts integral body to compress design, and the local pressure situation of product afterbody is improved.Have quick, the convenience that resets, and overall structure is simple, compact, the advantage that cost is low.
Description of drawings
Fig. 1 is an overall structure sketch map of the present utility model;
Fig. 2 is the structural representation of elastic fin described in the utility model;
Fig. 3 is the mated condition figure of elastic fin described in the utility model and piston rod;
Fig. 4 is the structural representation of resetting means described in the utility model;
Fig. 5 is the structural representation of flip flop equipment described in the utility model;
Fig. 6 is the structural representation of ampoule described in the utility model.
Specific embodiment
As shown in Figure 1, this utility model comprises the housing 1 that has chamber 2, one end of chamber 2 is a dispensing end, the other end is equipped with the power set 5 of band resetting means 3 and flip flop equipment 4, power set 5 comprise the piston 52 that has piston rod 51, piston 52 is preferably designed to oval or other the non-round shapes that cooperate with cavity geometry, and the purpose of this kind design is to prevent to reset when rotating, and piston rod 51 and then rotates; Be with spring 53 on the piston rod 51, end at spring 53 is provided with back-up ring 54, because the effect of back-up ring 54 can make spring 53 compressions or stretch, piston rod 51 front ends offer external screw thread 511, please in conjunction with Fig. 2, Fig. 3, shown in Figure 4, resetting means 3 comprises an elastic parts 31, the sealing of elastic parts 31 1 ends, the other end offer into several along circumferential equally distributed elastic fin 310, elastic fin 310 inboards offer the female thread 311 that is meshed with piston rod 51 external screw threads 511, the outside of elastic fin 310 is provided with the step 312 on band inclined plane 313, the quantity of elastic fin 310 is no less than 2 at least, elastic fin 310 is made as three in the present embodiment, and its advantage is to reduce the number of turns of the required rotation that resets, and the turning collar 33 that resets is connected by adapter sleeve 32 and elastic parts 31; Adapter sleeve 32 can be designed to compressing member, is fitted in the cavity 2 of injector shell 1 rear end; Also be with hold-down ring 34 on elastic fin 310, for being slidingly connected, condom 36 is installed in the outside of housing 1 between hold-down ring 34 and the elastic fin 310, and condom 36 is connected by push-pull piece 35 and hold-down ring 34; As shown in Figure 5, flip flop equipment 4 comprises handle 41 and the block 42 that is installed on the housing 1, and block 42 has the projection 421 towards chamber 2.
Operation principle of the present utility model is: in conjunction with shown in Figure 6, when needing injection, injection ampoule 6 is screwed in the dispensing end of chamber 2 by screw thread, upwards promote condom 36 then to reset mode, condom 36 moves up by push-pull piece 35 interlock hold-down rings 34, hold-down ring 34 inwardly compresses elastic fin 310 by inclined plane 313, thereby elastic fin 310 is closely contacted with piston rod 51, the spinning reduction turning collar 33 then, drive elastic parts 31 rotations, because the female thread of elastic fin 310 is meshed with the external screw thread of piston rod 51, along with the rotation of elastic parts 31, piston rod 51 upwards promotes, and spring 53 is compressed owing to back-up ring 54 withstands, when piston rod 51 continues to rise, when piston 52 is withstood by the projection on the block 42 421, spring 53 resets and finishes, and can enter inject state; During injection, only need condom 36 to setting aside hold-down ring 34 disengaging elastic fins 310, elastic fin 310 is in disengaged condition with piston rod 51, at this moment, pulls handle 41 downwards, under the elastic force effect of compression spring 53, piston rod 51 is flicked off by the dispensing end of high speed to cavity 2, thereby finishes injection.
Claims (10)
1, a kind of device of propelling that is used for needleless injection of liquids, comprise the housing (1) that has chamber (2), one end of chamber (2) is a dispensing end, the other end is equipped with the power set (5) of band resetting means (3) and flip flop equipment (4), power set (5) comprise the piston (52) that has piston rod (51), be with spring (53) on the piston rod (51), piston rod (51) front end offers external screw thread (511); It is characterized in that: resetting means (3) comprises an elastic parts (31), the sealing of elastic parts (31) one ends, the other end offer into several along circumferential equally distributed elastic fin (310), elastic fin (310) inboard offers the female thread (311) that is meshed with piston rod (51) external screw thread (511), the turning collar (33) that resets is connected with elastic parts (31), on elastic fin (310), be with hold-down ring (34), for being slidingly connected, hold-down ring (34) is connected with the condom (36) that is installed on the housing (1) between hold-down ring (34) and the elastic fin (310).
2, a kind of device of propelling that is used for needleless injection of liquids according to claim 1, it is characterized in that: described flip flop equipment (4) comprises handle (41) and the block (42) that is installed on the housing (1), and block (42) has the projection (421) towards chamber (2).
3, a kind of device of propelling that is used for needleless injection of liquids according to claim 1 is characterized in that: described piston (52) is preferably designed to and suitable ellipsoid or other the non-round shapes of cavity (2) shape.
4, a kind of device of propelling that is used for needleless injection of liquids according to claim 3 is characterized in that: described piston (52) all is set to ellipsoid with cavity (2).
5, a kind of device of propelling that is used for needleless injection of liquids according to claim 1, it is characterized in that: the quantity of described elastic fin (310) is no less than 2 at least.
6, a kind of device of propelling that is used for needleless injection of liquids according to claim 5, it is characterized in that: the quantity of described elastic fin (310) is made as three.
7, a kind of device of propelling that is used for needleless injection of liquids according to claim 1, it is characterized in that: the outside of described elastic fin (310) is provided with the step (312) on band inclined plane (313), and hold-down ring (34) is locked in a side on elastic fin (310) band inclined plane (313).
8, a kind of device of propelling that is used for needleless injection of liquids according to claim 1 is characterized in that: the female thread (311) of described elastic fin (310), the external screw thread (511) of piston rod (51) all adopt three-start screw.
9, a kind of device of propelling that is used for needleless injection of liquids according to claim 1 is characterized in that: the described turning collar that resets (33) is connected by adapter sleeve (32) and elastic parts (31).
10, a kind of device of propelling that is used for needleless injection of liquids according to claim 8, it is characterized in that: described adapter sleeve (32) is a compressing member, is fitted in the cavity (2) of injector shell (1) rear end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201927208U CN201108643Y (en) | 2007-12-07 | 2007-12-07 | Push shot device for liquid non-needle injection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201927208U CN201108643Y (en) | 2007-12-07 | 2007-12-07 | Push shot device for liquid non-needle injection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201108643Y true CN201108643Y (en) | 2008-09-03 |
Family
ID=39893159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201927208U Expired - Lifetime CN201108643Y (en) | 2007-12-07 | 2007-12-07 | Push shot device for liquid non-needle injection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201108643Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011032513A1 (en) * | 2009-09-18 | 2011-03-24 | United Medical Innovations, Inc. | Locking syringe with integrated bias member |
| WO2012167719A1 (en) * | 2011-06-08 | 2012-12-13 | 北京达必通科技开发有限公司 | Pressure-assisted three-ring syringe |
| 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 |
-
2007
- 2007-12-07 CN CNU2007201927208U patent/CN201108643Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011032513A1 (en) * | 2009-09-18 | 2011-03-24 | United Medical Innovations, Inc. | Locking syringe with integrated bias member |
| CN102740908A (en) * | 2009-09-18 | 2012-10-17 | 美国联合医疗器械创新有限公司 | Locking syringe with integrated bias member |
| CN102740908B (en) * | 2009-09-18 | 2015-04-29 | 美国联合医疗器械创新有限公司 | Locking syringe with integrated bias member |
| WO2012167719A1 (en) * | 2011-06-08 | 2012-12-13 | 北京达必通科技开发有限公司 | Pressure-assisted three-ring syringe |
| 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: 20080903 |
|
| CX01 | Expiry of patent term |