CN202761828U - Novel low resistance injector - Google Patents
Novel low resistance injector Download PDFInfo
- Publication number
- CN202761828U CN202761828U CN 201220325600 CN201220325600U CN202761828U CN 202761828 U CN202761828 U CN 202761828U CN 201220325600 CN201220325600 CN 201220325600 CN 201220325600 U CN201220325600 U CN 201220325600U CN 202761828 U CN202761828 U CN 202761828U
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- plug
- push rod
- sealing ring
- thin
- novel low
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Abstract
The utility model relates to a novel low resistance injector which comprises a cylinder body, a push rod and a rubber plug. The push rod is formed by a push rod body and a push rod head. The rubber plug is formed by a rubber plug main body, a cone-shaped cap and thin wall protrusion sealing rings. A rubber plug cavity for containing the push rod head is arranged inside the rubber plug. The rubber plug main body extends along two ends and protrudes to form two horn-mouth-shaped thin wall protrusion sealing rings. A vertical section of each thin wall protrusion sealing ring is about in V shape. The quadrangle portion of the outer side of the vertical section of each thin wall protrusion sealing ring is in closed-angle shape. A contact area of the rubber plug and an inner wall of the cylinder body is enabled to be small. Meanwhile the thin wall protrusion sealing rings can adjust sealing degree through extruding and swelling or rebounding and narrowing with change of pressure of the cylinder body. The novel low resistance injector is high in sensitivity. On the foundation that the smallest interference fit of the thin wall protrusion sealing rings and the inner wall of the cylinder body is ensured, frictional resistance of the rubber plug and the inner wall of the cylinder body is the smallest when the push rod is pushed and pulled, and hand touch is light. The novel low resistance injector is low in resistance, strong in sealing and simple in structure.
Description
Technical field
This utility model relates to medical medical instruments field, is specifically related to a kind of novel low-resistance injector with lower resistance and strong sealing.
Background technology
Syringe is a kind of instrument that the clinical medical and nursing worker commonly uses, and is usually used in injectable drug, pumping liquid, makes up a prescription and pressure measurement etc.Traditional disposable use plastic injector is in order to guarantee its sealing, and plug has adopted larger interference fit, and frictional resistance is larger when push-and-pull, just the operator must can make plug move with larger power; Although the glass syringe sliding capability of rigidity is better than plastic injector, but easily broken in transportation and use procedure, especially when using for the anesthesia packet configuration, the fragmentation of glass syringe can make operation not carry out smoothly, even the whole product of contracting for fixed output quotas are scrapped, damage for medical personnel, patient.
Summary of the invention
This utility model has overcome deficiency of the prior art, provide a kind of lower resistance, by force the sealing and novel low-resistance injector simple in structure.Plug can squeeze to open with the variation of cylinder internal pressure and swell or resilience is dwindled, and automatically regulates the tightness of cylinder inboard wall and plug, thereby reduces the frictional resistance between cylinder inboard wall and the plug, can keep again the novel low-resistance injector that seals with cylinder inboard wall simultaneously.
In order to solve the problems of the technologies described above, this utility model is achieved through the following technical solutions: novel low-resistance injector, comprise stack shell, the push rod that in stack shell, slides and plug, wherein push rod is comprised of push rod body and push rod cup, be provided with the plug cavity that holds push rod cup in the plug, plug is installed on the push rod cup, it is characterized in that its plug is comprised of plug main body, tapered cap and thin-walled projection sealing ring, the plug main body is cylindrical, and the plug main body is extended outstanding two thin-walled projection sealing rings that form bell mouth shape to two ends; Tapered cap is positioned at the plug body front end, and is provided with the space between the thin-walled projection sealing ring of plug upper end, and it highly is higher than plug upper end thin-walled projection sealing ring; A circle round body is given prominence in plug main body lower end, and is provided with the space between the thin-walled projection sealing ring of plug lower end, and highly is higher than the height of thin-walled projection sealing ring.The technical problem that this utility model solves can also realize by following measures: the height of described plug cavity is higher than the height of push rod cup, leaves the gap that plug slides between push rod cup and the push rod body; Described push rod cup be shaped as the up and down four prisms cylinder that is separated by the projection circular shape sheet, its middle and lower part four prisms cylinder cross section is less than top four prisms cylinder cross section; Two thin-walled projection sealing rings on the described plug main body and syringe inwall interference fit; Described thin-walled projection sealing ring vertical sectional shape is the V font, and its four bights, outside, longitudinal section are divided into tip-angled shape; Described plug material is medical macromolecular materials.
The beneficial effects of the utility model are: the design of the thin-walled projection sealing ring of plug, so that the contact surface of plug and cylinder inboard wall is less, simultaneously thin-walled projection sealing ring can occur along with the change of cylinder internal pressure squeezing holding and swells or resilience is dwindled, its sensitivity is higher, regulate its tightness with this, reach the purpose of sealing; Guaranteeing that the interference fit between sealing ring and the cylinder inwall is on the basis of minimum, the frictional resistance of plug and cylinder inboard wall is minimum when the push-and-pull push rod, and feel is lighter.Thereby can realize the purpose of lower resistance, strong sealing, its production technology is simple, can be mass-produced.
Description of drawings
Fig. 1 is whole profile of the present utility model;
Fig. 2 is the overall schematic of plug;
Fig. 3 is the profile of plug;
Fig. 4 is the structural representation of push rod cup.
1. stack shells among the figure, 2. push rod body, 3. plug, 4. push rod cup, 5. plug cavity, 6. plug main body, 7. tapered cap, 8-1. upper end thin-walled projection sealing ring, 8-2. lower end thin-walled projection sealing ring, 9. circle round body, 10. stack shell inwall, 4-1. the projection circular shape sheet, 4-2. bottom four prisms cylinder, 4-3. top four prisms cylinder.
The specific embodiment
Novel low-resistance injector, comprise stack shell 1, at push rod and the plug 3 of stack shell 1 interior slip, wherein push rod is comprised of push rod body 2 and push rod cup 4, be provided with the plug cavity 5 that holds push rod cup 4 in the plug, plug 3 is installed on the push rod cup 4, it is characterized in that its plug 3 is comprised of plug main body 6, tapered cap 7 and thin-walled projection sealing ring, plug main body 6 is cylindrical;
Plug main body 6 is extended the outstanding thin-walled projection sealing ring that forms bell mouth shape to two ends; Tapered cap 7 is positioned at plug main body 6 front ends, and is provided with the space between the plug 3 upper end thin-walled projection sealing ring 8-1, and it highly is higher than plug 3 upper end thin-walled projection sealing ring 8-1; A circle round body 9 is given prominence in plug main body 6 lower ends, and is provided with the space between the plug 3 lower end thin-walled projection sealing ring 8-2, and highly is higher than the height of lower end thin-walled projection sealing ring 8-2; The height of described plug cavity 5 is higher than the height of push rod cup 4, leaves the gap that plug 3 slides between push rod cup 4 and the push rod body 2; Described push rod cup 4 be shaped as the up and down four prisms cylinder that is separated by projection circular shape sheet 4-1, its middle and lower part four prisms cylinder 4-2 cross section is less than top four prisms cylinder 4-3 cross section; Two thin-walled projection sealing rings on the described plug main body 6 and stack shell inwall 10 interference fit; Described thin-walled projection sealing ring vertical sectional shape is the V font, and its four bights, outside, longitudinal section are divided into tip-angled shape; Described plug 3 materials are medical macromolecular materials.
Uses that be connected of novel low-resistance injector, its plug cavity 5 and push rod, the frictional resistance minimum of plug 3 and stack shell inwall 10 when guaranteeing push-and-pull, feel is lighter.Simultaneously plug 3 is in stack shell inwall 10 sliding processes, when no matter promoting forward or pull back middle bell mouth shape thin-walled projection sealing ring and will occur along with the change of cylinder internal pressure squeezing opening and swell or resilience is dwindled; When promoting plug 3 forward, along with the increase of cylinder internal pressure, pressure-acting makes it occur swelling to after strain in plug 3 upper end thin-walled projection sealing ring 8-1, plays sealing function, along with reducing of cylinder internal pressure, upper end thin-walled projection sealing ring 8-1 has just sprung back to initial equilibrium state; When pulling back plug, along with the increase of cylinder internal pressure, pressure-acting is out of shape forward it in plug 3 lower end thin-walled projection sealing ring 8-2 to occur swelling, play sealing function, along with reducing of cylinder pressure, lower end thin-walled projection sealing ring 8-2 has just sprung back to initial equilibrium state.
More than be preferred embodiment of the present utility model, all changes of doing according to technical solutions of the utility model when the function that produces does not exceed the scope of technical solutions of the utility model, all belong to protection of the present utility model.
Claims (6)
1. novel low-resistance injector, comprise stack shell (1), the push rod and the plug (3) that in stack shell (1), slide, wherein push rod is comprised of push rod body (2) and push rod cup (4), be provided with the plug cavity (5) that holds push rod cup (4) in the plug (3), plug (3) is installed on the push rod cup (4), it is characterized in that its plug (3) is comprised of plug main body (6), tapered cap (7) and thin-walled projection sealing ring, plug main body (6) is cylindrical; Plug main body (6) is extended the outstanding thin-walled projection sealing ring that forms bell mouth shape to two ends; Tapered cap (7) is positioned at plug main body (6) front end, and is provided with the space between plug (3) the upper end thin-walled projection sealing ring (8-1), and it highly is higher than plug (3) upper end thin-walled projection sealing ring (8-1); A circle round body (9) is given prominence in plug main body (6) lower end, and is provided with the space between plug (3) the lower end thin-walled projection sealing ring (8-2), and highly is higher than the height of lower end thin-walled projection sealing ring (8-2).
2. novel low-resistance injector as claimed in claim 1 is characterized in that the height of described plug cavity (5) is higher than the height of push rod cup (4), leaves the gap that plug slides between push rod cup (4) and the push rod body (2).
3. novel low-resistance injector as claimed in claim 1, the up and down four prisms cylinder that projection circular shape sheet (4-1) separates that is shaped as that it is characterized in that described push rod cup, its middle and lower part four prisms cylinder (4-2) cross section is less than top four prisms cylinder (4-3) cross section.
4. novel low-resistance injector as claimed in claim 1 is characterized in that two thin-walled projection sealing rings and stack shell inwall (10) interference fit on the described plug main body (6).
5. novel low-resistance injector as claimed in claim 1 is characterized in that described thin-walled projection sealing ring vertical sectional shape is the V font, and its four bights, outside, longitudinal section are divided into tip-angled shape.
6. novel low-resistance injector as claimed in claim 1 is characterized in that described plug (3) material is medical macromolecular materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220325600 CN202761828U (en) | 2012-06-29 | 2012-06-29 | Novel low resistance injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220325600 CN202761828U (en) | 2012-06-29 | 2012-06-29 | Novel low resistance injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202761828U true CN202761828U (en) | 2013-03-06 |
Family
ID=47768437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220325600 Expired - Fee Related CN202761828U (en) | 2012-06-29 | 2012-06-29 | Novel low resistance injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202761828U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103656804A (en) * | 2014-01-08 | 2014-03-26 | 山东威高集团医用高分子制品股份有限公司 | Piston for injector |
| CN105498048A (en) * | 2016-01-21 | 2016-04-20 | 余利荣 | Improved low-resistance injector |
| CN105521540A (en) * | 2016-02-26 | 2016-04-27 | 杭羽扬 | Low-resistance injector |
| CN105709310A (en) * | 2016-04-07 | 2016-06-29 | 广西华度医用器材有限公司 | Low-resistance injector |
| CN109107002A (en) * | 2018-09-07 | 2019-01-01 | 浙江润强医疗器械股份有限公司 | Disposable injection with low resistance |
| CN115192825A (en) * | 2021-04-13 | 2022-10-18 | 陈红丹 | Pre-filled and sealed injector and liquid storage device capable of generating different injection forces |
-
2012
- 2012-06-29 CN CN 201220325600 patent/CN202761828U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103656804A (en) * | 2014-01-08 | 2014-03-26 | 山东威高集团医用高分子制品股份有限公司 | Piston for injector |
| CN105498048A (en) * | 2016-01-21 | 2016-04-20 | 余利荣 | Improved low-resistance injector |
| CN105521540A (en) * | 2016-02-26 | 2016-04-27 | 杭羽扬 | Low-resistance injector |
| CN105521540B (en) * | 2016-02-26 | 2018-11-13 | 杭羽扬 | A kind of injection with low resistance |
| CN105709310A (en) * | 2016-04-07 | 2016-06-29 | 广西华度医用器材有限公司 | Low-resistance injector |
| CN105709310B (en) * | 2016-04-07 | 2021-12-31 | 广西华度医用器材有限公司 | Low-resistance syringe |
| CN109107002A (en) * | 2018-09-07 | 2019-01-01 | 浙江润强医疗器械股份有限公司 | Disposable injection with low resistance |
| CN115192825A (en) * | 2021-04-13 | 2022-10-18 | 陈红丹 | Pre-filled and sealed injector and liquid storage device capable of generating different injection forces |
| CN115192825B (en) * | 2021-04-13 | 2024-04-30 | 陈红丹 | Prefilled syringe and reservoir for generating different injection forces |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: HENAN TUOREN MEDICAL APPLIANCES GROUP CO., LTD. Free format text: FORMER NAME: XINXIANG TUOREN MEDICAL APPLIANCES CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 453400, Henan County, Xinxiang City, Changyuan Province Meng Gang reed Garden Industrial Zone Patentee after: HENAN TUOREN MEDICAL DEVICE GROUP CO., LTD. Address before: Xinxiang City, Henan Province, Changyuan 453400 Gangwei Meng industrial park a group Patentee before: Xinxiang Tuoren Medical Appliances Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130306 Termination date: 20210629 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |