CN104436370A - Driven precision injector - Google Patents
Driven precision injector Download PDFInfo
- Publication number
- CN104436370A CN104436370A CN201310423451.1A CN201310423451A CN104436370A CN 104436370 A CN104436370 A CN 104436370A CN 201310423451 A CN201310423451 A CN 201310423451A CN 104436370 A CN104436370 A CN 104436370A
- Authority
- CN
- China
- Prior art keywords
- piston
- piston rod
- cartridge case
- flexible
- drive
- 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.)
- Pending
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31533—Dosing mechanisms, i.e. setting a dose
Landscapes
- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
A driven precision injector is characterized by comprising a medicine tube, a guide tube, a piston, a spring, a piston driver, a nut element, a shoulder, a motor, a gear drive, a bent passage and a ridge. One end of the medicine tube is closed with a seal cover, a needle or the guide tube is mounted under the seal cover, the needle or the guide tube is connected with liquid medicine within the medicine tube, the other end of the medicine tube is closed with the piston, the piston can be driven into the medicine tube under the action of a flexible piston rod to squeeze out the liquid medicine through the needle or the guide tube, the piston is adjacently connected to the distal end of the flexible piston rod, the proximal end of the flexible piston end deviates off the axis of the medicine tube, and a piston pad is provided between the piston and the piston rod. The driven precision injector is simple in structure, high in reliability and green and allows precise dosage.
Description
Technical field
The present invention relates to a kind of piston and to adopt helical spring form, for the flexible piston rod of injection device.
Background technology
At present, the mobile system of the controlled injection of general normal use, but uncontrolled movement to a certain extent, accurately can not control injection volume, likely cause serious consequence.
summary of the invention
The object of the present invention is to provide a kind of structure simple, the injecting systems of the flexible plunger rod-type that environmental protection is accurate.
The invention provides a kind of drive-type precision injection device, it is characterized in that: described drive-type precision injection device comprises cartridge case 1, conduit 2, piston 3, spring 4, piston driver 5, nut element 6, shoulder 7, motor 8, gear drive 9, bending channel 10, ridge 11;
Wherein: cartridge case 1 at one end place of portion is closed by capping, lower installation syringe needle or conduit 2, syringe needle or conduit 2 are connected with the liquid medicine in pencil, cartridge case 1 is closed by piston 3 in its another end, piston 3 can squeeze in cartridge case 1 to extrude liquid medicine by syringe needle or conduit 2 under the effect of flexible piston rod, the far-end of flexible piston rod faces then piston 3, and proximal deflection leaves the axis of cartridge case 1, can be provided with piston packing between piston 3 and piston rod.
Described piston driver 5 is made up of nut element 6, lock to prevent nut shaft to movement by the shoulder 7 in unshowned shell, nut element 6 has the female thread engaged with the external screw thread of flexible piston rod, nut element 6 is rotated under the effect of motor by gear drive, and cartridge case 1 and piston driver 5 are arranged in unshowned shell.
Junction on spring 4 in described bending channel 10 prevents the rotation of flexible piston rod, or by being incorporated in flexible piston rod by ridge 11, the introversion that ridge 11 is located at flexural spring 4 towards part on.
The described cylinder seat 3 that splits adopts steel bowl structure.
Advantage of the present invention:
Drive-type precision injection device structure of the present invention is simple, and reliability is high, environmental protection, and dosage is accurate.
Accompanying drawing explanation
Below in conjunction with drawings and the embodiments, the present invention is further detailed explanation:
Fig. 1 is drive-type precision injection device structural representation.
Detailed description of the invention
Embodiment 1
Present embodiments provide a kind of drive-type precision injection device, it is characterized in that: described drive-type precision injection device comprises cartridge case 1, conduit 2, piston 3, spring 4, piston driver 5, nut element 6, shoulder 7, motor 8, gear drive 9, bending channel 10, ridge 11;
Wherein: cartridge case 1 at one end place of portion is closed by capping, lower installation syringe needle or conduit 2, syringe needle or conduit 2 are connected with the liquid medicine in pencil, cartridge case 1 is closed by piston 3 in its another end, piston 3 can squeeze in cartridge case 1 to extrude liquid medicine by syringe needle or conduit 2 under the effect of flexible piston rod, the far-end of flexible piston rod faces then piston 3, and proximal deflection leaves the axis of cartridge case 1, can be provided with piston packing between piston 3 and piston rod.
Described piston driver 5 is made up of nut element 6, lock to prevent nut shaft to movement by the shoulder 7 in unshowned shell, nut element 6 has the female thread engaged with the external screw thread of flexible piston rod, nut element 6 is rotated under the effect of motor by gear drive, and cartridge case 1 and piston driver 5 are arranged in unshowned shell.
Junction on spring 4 in described bending channel 10 prevents the rotation of flexible piston rod, or by being incorporated in flexible piston rod by ridge 11, the introversion that ridge 11 is located at flexural spring 4 towards part on.
Claims (3)
1. a drive-type precision injection device, is characterized in that: described drive-type precision injection device comprises cartridge case (1), conduit (2), piston (3), spring (4), piston driver (5), nut element (6), shoulder (7), motor (8), gear drive (9), bending channel (10), ridge (11);
Wherein: cartridge case (1) at one end place of portion is closed by capping, lower installation syringe needle or conduit (2), syringe needle or conduit (2) are connected with the liquid medicine in pencil, cartridge case (1) is closed by piston (3) in its another end, piston (3) can squeeze in cartridge case (1) to extrude liquid medicine by syringe needle or conduit (2) under the effect of flexible piston rod, the far-end of flexible piston rod faces then piston (3), proximal deflection leaves the axis of cartridge case (1), can be provided with piston packing between piston (3) and piston rod.
2. according to drive-type precision injection device according to claim 1, it is characterized in that: described piston driver (5) is made up of nut element (6), lock to prevent nut shaft to movement by the shoulder (7) in unshowned shell, nut element (6) has the female thread engaged with the external screw thread of flexible piston rod, nut element (6) is rotated under the effect of motor by gear drive, and cartridge case (1) and piston driver (5) are arranged in unshowned shell.
3. according to drive-type precision injection device according to claim 1, it is characterized in that: the junction on the spring (4) in described bending channel (10) prevents the rotation of flexible piston rod, or by ridge (11) is incorporated in flexible piston rod, the introversion that ridge (11) is located at flexural spring (4) towards part on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310423451.1A CN104436370A (en) | 2013-09-17 | 2013-09-17 | Driven precision injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310423451.1A CN104436370A (en) | 2013-09-17 | 2013-09-17 | Driven precision injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104436370A true CN104436370A (en) | 2015-03-25 |
Family
ID=52883619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310423451.1A Pending CN104436370A (en) | 2013-09-17 | 2013-09-17 | Driven precision injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104436370A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160130121A (en) * | 2015-05-01 | 2016-11-10 | 성신여자대학교 산학협력단 | Joint apparatus and injection set having the same |
| CN108495666A (en) * | 2015-11-27 | 2018-09-04 | 赛诺菲-安万特德国有限公司 | medicament injection apparatus |
-
2013
- 2013-09-17 CN CN201310423451.1A patent/CN104436370A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160130121A (en) * | 2015-05-01 | 2016-11-10 | 성신여자대학교 산학협력단 | Joint apparatus and injection set having the same |
| KR101692148B1 (en) | 2015-05-01 | 2017-01-03 | 성신여자대학교 산학협력단 | Joint apparatus and injection set having the same |
| CN108495666A (en) * | 2015-11-27 | 2018-09-04 | 赛诺菲-安万特德国有限公司 | medicament injection apparatus |
| CN108495666B (en) * | 2015-11-27 | 2022-04-01 | 赛诺菲-安万特德国有限公司 | Medicament injection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150325 |