CN109481787A - A kind of injection with low resistance - Google Patents
A kind of injection with low resistance Download PDFInfo
- Publication number
- CN109481787A CN109481787A CN201811564306.4A CN201811564306A CN109481787A CN 109481787 A CN109481787 A CN 109481787A CN 201811564306 A CN201811564306 A CN 201811564306A CN 109481787 A CN109481787 A CN 109481787A
- Authority
- CN
- China
- Prior art keywords
- section
- injection
- piston
- low resistance
- push rod
- 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
- 238000002347 injection Methods 0.000 title claims abstract description 42
- 239000007924 injection Substances 0.000 title claims abstract description 42
- 241000237970 Conus <genus> Species 0.000 claims description 7
- 230000007423 decrease Effects 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000003814 drug Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 206010002091 Anaesthesia Diseases 0.000 description 1
- 230000037005 anaesthesia Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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
-
- 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
-
- 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
- A61M5/31511—Piston or piston-rod constructions, e.g. connection of piston with piston-rod
- A61M5/31513—Piston constructions to improve sealing or sliding
-
- 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
- A61M5/31511—Piston or piston-rod constructions, e.g. connection of piston with piston-rod
- A61M5/31515—Connection of piston with piston rod
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
The present invention proposes a kind of injection with low resistance, the push rod and piston slided including injection tube and in injection tube, it is characterized by: the push rod includes limit section and is arranged section, limiting section includes rotary table portion, section is arranged equipped with piston, piston includes ring taps body, and the outside of ring taps body is equipped with outward flange, the inside of ring taps body is equipped with fitting groove, and rotary table portion and fitting groove cooperate.Advantages of the present invention: while guaranteeing the tightness of piston, enable to contact of the piston with cylinder less, resistance is smaller, easily facilitates the use of operator；Inward flange is set in the middle part of ring taps body, strives for more distortion allowances for middle part, further decreases resistance when operation.
Description
Technical field
The present invention relates to medical instruments, particularly relate to a kind of injection with low resistance.
Background technique
Syringe is a kind of common medical instruments.Common syringe has glass syringe and plastic injector, because
The processing cost of plastic injector is lower, thus modern medical service syringe majority be it is made of plastic, plastic injector in order to
Guaranteeing the sealing effect between piston and cylinder, piston needs to be adjacent to cylinder inboard wall, but piston contacts excessively with cylinder inboard wall,
It will increase the resistance of push rod, in some special circumstances, when such as puncture procedure anesthesia, due to the larger resistance of injector push-rod,
Operator's hand sense of touch can be reduced, to influence operation judges.
There are many injection with low resistance in the prior art, and some piston configurations are fixed, in cylinder internal pressure
When excessive, piston compressive deformation will increase the contact area with cylinder inboard wall, to increase resistance；Some syringe pistons
Structure is complicated, needs multiple component combinations together, to increase whole production, assembling cost；Some syringes are living
Plug structure is soft or hard bond material, and existing hard material influences the rebound of flexible material, so that it is residual to cause injector drug
Surplus is larger.Generally speaking, existing injection with low resistance using effect is unsatisfactory, needs further to improve and optimizate.
Summary of the invention
The present invention proposes a kind of injection with low resistance, solves that existing injection with low resistance using effect is undesirable to ask
Topic.
The technical scheme of the present invention is realized as follows: a kind of injection with low resistance, including injection tube and in injection tube
The push rod and piston of sliding, it is characterised in that: the push rod includes limit section and is arranged section, and limit section includes rotary table portion, set
If section is equipped with piston, piston includes ring taps body, and the outside of ring taps body is equipped with outward flange, and the inside of ring taps body is equipped with fitting groove,
Rotary table portion and fitting groove cooperate.
The limit section includes conus portion, and conus portion is connect with rotary table portion.
The push rod further includes main paragraph and final quotaion section, and main paragraph is connect with section is arranged, and final quotaion section is connect with main paragraph.
The cross section of the main paragraph is cross.
Chamfered groove is equipped in the fitting groove.
Equipped with inward flange in the ring taps body, inward flange cooperates with section is arranged.
The injection tube includes cylinder, and the tail portion of cylinder is equipped with non-slip groove.
The injection tube includes cylinder, and the tail portion opening of cylinder is equipped with clamp flange.
The clamp flange includes segmental arc and oblique line section.
Advantages of the present invention: while guaranteeing the tightness of piston, enabling to contact of the piston with cylinder less, hinders
Power is smaller, easily facilitates the use of operator；Inward flange is set in the middle part of ring taps body, is that middle part is striven for more than more deformation
Amount, further decreases resistance when operation.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is schematic structural view of the invention.
Fig. 2 is pusher structure schematic diagram of the present invention.
Fig. 3 is inventive piston structural schematic diagram.
Fig. 4 is injection tube structural schematic diagram of the present invention.
Fig. 5 is the top view of Fig. 4.
In figure: 1- push rod, 2- piston, 3- injection tube, 11- limit section, 111- conus portion, 112- rotary table portion, 12- are arranged
Section, 13- main paragraph, 14- final quotaion section, 21- ring taps body, 22- outward flange, 23- fitting groove, 24- chamfered groove, 25- inward flange, 31-
Body, 32- non-slip groove, 33- clamp flange, 331- segmental arc, 332- oblique line section.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under that premise of not paying creative labor
Embodiment shall fall within the protection scope of the present invention.
As shown in Figure 1, a kind of injection with low resistance, including push rod 1, piston 2 and injection tube 3, piston 2 are set in push rod 1
On, when push rod 1 slides up and down, piston 2 and injection tube 3 are formed and are sealed, and realize the function of sucking and injection medicament.
As shown in Fig. 2, the push rod 1 includes limit section 11, is arranged section 12, main paragraph 13 and final quotaion section 14, section is limited
11 include conus portion 111 and rotary table portion 112 again, and conus portion 111 is located at head and connect with rotary table portion 112, and rotary table portion 112 is to fall
Set, the angled end-face in rotary table portion 112 and piston 2 cooperate, can gradually clamping piston, realize better seal, and pass through rotary table portion
112 lower end surface seized piston 2 realizes the limit to piston 2, and rotary table portion 112 connect with section 112 is arranged, is arranged section 112 and is used for
It is arranged piston 2, section 112 is arranged and is connect with main paragraph 113, the cross section of main paragraph 113 is cross, while transmitting thrust
Material can be saved, main paragraph 113 is connect with final quotaion section 114, and final quotaion section 114 is circular plate, is pushed away for pressing or pulling
Bar.
As shown in figure 3, the piston 2 includes ring taps body 21, outward flange 22, fitting groove 23, chamfered groove 24 and inward flange 25,
Outward flange 22 is located on the outside of the upper end of ring taps body 21, outward flange 22 for being contacted with injection tube 3, formed piston and injection tube 3 it
Between sealing, fitting groove 23 is opened on the inside of the upper end of ring taps body 21, the lower end surface of fitting groove 23 and the lower end surface in rotary table portion 112
It is engaged, the angled end-face of the perpendicular end face and rotary table portion 112 of fitting groove 23 is engaged, and rotary table portion 112 acts on fitting groove 23
Place limits the retraction of outward flange 22 by rotary table portion 112, guarantees the stabilization of sealing, and chamfered groove 24 is opened in the turning of fitting groove 23
Place, provides more margin for the deformation of ring taps body 21, further reduces resistance, inward flange 25 is located in the middle-end of ring taps body 21
Side, inward flange 25 can optimize the sealing and deformation of ring taps body 21, into one to provide bigger distortion allowance in the middle part of ring taps body
The attenuating resistance of step.
As shown in Figures 4 and 5, the injection tube 3 includes cylinder 31, non-slip groove 32 and clamp flange 33, and non-slip groove 32 is located at
On 31 tail portion wing plate of cylinder, holding of the finger to cylinder is improved, clamp flange 33 is located at 1 tail end opening of cylinder, can be to push rod 1
It is limited, anti-throw-out lever 1 skids off injection tube easily, and specific clamp flange 33 includes segmental arc 331 and oblique line section 332, arc
Section 331 can limit push rod 1, but be unlikely to push rod 1 and be difficult to extract out of injection tube 3, and oblique line section 332 is gradually reduced
The bore of opening is stablized convenient for push rod 1 and is entered in injection tube 3.
Syringe of the invention is divided into three kinds of working conditions: static, drawing liquid and injection.
In stationary state, outward flange contacts to form sealing with cylinder inboard wall.In drawing liquid state, lower pulling-pushing rod extracts medicament,
Negative pressure is generated in cylinder, outward flange retracts upwards, reduces with the contact area of cylinder inboard wall, reduce the resistance of push rod, while
Under the limit in rotary table portion stops, when avoiding excessive because of negative pressure, outward flange retracts excessive, contact sealing of the outward flange with cylinder inboard wall
Failure, influences the leakproofness of syringe, and push rod drop-down stops, and the intracorporal negative pressure of cylinder is gradually reduced, outward flange rebound, outward flange with
The contact of cylinder inboard wall restores.In injection state, upper push rod, outward flange by medical fluid in cylinder extruding and spreading, with cylinder
The contact of internal wall increases, and improves the leakproofness of piston, until push rod above pushes away stopping, the intracorporal pressure of cylinder is gradually decreased, flange
Rebound, contact of the flange with cylinder inboard wall restore.
Syringe of the invention is compared with existing syringe, when lower pulling-pushing rod, while guaranteeing the tightness of piston, and energy
Enough so that contact of the piston with cylinder is less, resistance is smaller, easily facilitates the use of operator.In being arranged in the middle part of ring taps body
Flange strives for more distortion allowances for middle part, further decreases resistance when operation.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of injection with low resistance, including injection tube (3) and the push rod (1) and piston (2) that are slided in injection tube (3),
Be characterized in that: the push rod (1) includes limit section (11) and is arranged section (12), and limit section (11) includes rotary table portion (112), set
If section (12) is equipped with piston (2), piston (2) includes ring taps body (21), and the outside of ring taps body (21) is equipped with outward flange (22), ring
The inside of cock body (21) is equipped with fitting groove (23), and rotary table portion (112) and fitting groove (23) cooperate.
2. injection with low resistance according to claim 1, it is characterised in that: the limit section (11) includes conus portion
(111), conus portion (111) is connect with rotary table portion (112).
3. injection with low resistance according to claim 1 or 2, it is characterised in that: the push rod (1) further includes main paragraph
(13) it is connect with final quotaion section (14), main paragraph (13) with section (12) is arranged, final quotaion section (14) is connect with main paragraph (13).
4. injection with low resistance according to claim 3, it is characterised in that: the cross section of the main paragraph (13) is ten
Font.
5. injection with low resistance according to claim 1, it is characterised in that: be equipped with chamfered groove in the fitting groove (23)
(24).
6. injection with low resistance according to claim 1 or 5, it is characterised in that: set in the ring taps body (21)
Have inward flange (25), inward flange (25) cooperates with section (12) are arranged.
7. injection with low resistance according to claim 1, it is characterised in that: the injection tube (3) includes cylinder (31),
The tail portion of cylinder (31) is equipped with non-slip groove (32).
8. injection with low resistance according to claim 1 or claim 7, it is characterised in that: the injection tube (3) includes cylinder
(31), the tail portion opening of cylinder (31) is equipped with clamp flange (33).
9. injection with low resistance according to claim 8, it is characterised in that: the clamp flange (33) includes segmental arc
(331) and oblique line section (332).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811564306.4A CN109481787A (en) | 2018-12-20 | 2018-12-20 | A kind of injection with low resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811564306.4A CN109481787A (en) | 2018-12-20 | 2018-12-20 | A kind of injection with low resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109481787A true CN109481787A (en) | 2019-03-19 |
Family
ID=65711140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811564306.4A Pending CN109481787A (en) | 2018-12-20 | 2018-12-20 | A kind of injection with low resistance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109481787A (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB298292A (en) * | 1927-07-18 | 1928-10-11 | Reginald Baxter | Improvements in or relating to syringes |
| EP1002551A2 (en) * | 1998-11-19 | 2000-05-24 | Bracco International B.V. | Easy-slip plunger/plunger rod assembly for a syringe or a cartridge |
| CN101247842A (en) * | 2005-09-02 | 2008-08-20 | 莱博瑞特阿格坦特公司 | Syringe designed to be pre-filled then sterilized by steam autoclaving |
| CN201143332Y (en) * | 2008-01-27 | 2008-11-05 | 房东森 | Disposable syringe piston |
| CN201161028Y (en) * | 2008-02-04 | 2008-12-10 | 房东森 | Safety syringe |
| US20100185147A1 (en) * | 2009-01-22 | 2010-07-22 | Cho-Ying Chen | Disposable safety syringe structure |
| CN201668813U (en) * | 2010-06-12 | 2010-12-15 | 成都市新津事丰医疗器械有限公司 | Syringe |
| CN102631731A (en) * | 2012-03-30 | 2012-08-15 | 杭州龙德医用器械有限公司 | Low-resistance syringe |
| CN203107885U (en) * | 2013-01-14 | 2013-08-07 | 江苏省华星医疗器械实业有限公司 | Novel low-resistance injection syringe rubber plug |
| CN104759005A (en) * | 2015-04-21 | 2015-07-08 | 山东淄博山川医用器材有限公司 | Low-resistance injector piston and injector |
| CN105498048A (en) * | 2016-01-21 | 2016-04-20 | 余利荣 | Improved low-resistance injector |
| CN205885906U (en) * | 2016-03-30 | 2017-01-18 | 淮安市恒春医疗器材有限公司 | Disposable triangle -shaped circumferential sealing circle syringe |
| US20180028758A1 (en) * | 2016-07-26 | 2018-02-01 | Jian-Yu JIA | Safety syringe |
| CN209734661U (en) * | 2018-12-20 | 2019-12-06 | 伦若森 | Low-resistance syringe |
-
2018
- 2018-12-20 CN CN201811564306.4A patent/CN109481787A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB298292A (en) * | 1927-07-18 | 1928-10-11 | Reginald Baxter | Improvements in or relating to syringes |
| EP1002551A2 (en) * | 1998-11-19 | 2000-05-24 | Bracco International B.V. | Easy-slip plunger/plunger rod assembly for a syringe or a cartridge |
| CN101247842A (en) * | 2005-09-02 | 2008-08-20 | 莱博瑞特阿格坦特公司 | Syringe designed to be pre-filled then sterilized by steam autoclaving |
| CN201143332Y (en) * | 2008-01-27 | 2008-11-05 | 房东森 | Disposable syringe piston |
| CN201161028Y (en) * | 2008-02-04 | 2008-12-10 | 房东森 | Safety syringe |
| US20100185147A1 (en) * | 2009-01-22 | 2010-07-22 | Cho-Ying Chen | Disposable safety syringe structure |
| CN201668813U (en) * | 2010-06-12 | 2010-12-15 | 成都市新津事丰医疗器械有限公司 | Syringe |
| CN102631731A (en) * | 2012-03-30 | 2012-08-15 | 杭州龙德医用器械有限公司 | Low-resistance syringe |
| CN203107885U (en) * | 2013-01-14 | 2013-08-07 | 江苏省华星医疗器械实业有限公司 | Novel low-resistance injection syringe rubber plug |
| CN104759005A (en) * | 2015-04-21 | 2015-07-08 | 山东淄博山川医用器材有限公司 | Low-resistance injector piston and injector |
| CN105498048A (en) * | 2016-01-21 | 2016-04-20 | 余利荣 | Improved low-resistance injector |
| CN205885906U (en) * | 2016-03-30 | 2017-01-18 | 淮安市恒春医疗器材有限公司 | Disposable triangle -shaped circumferential sealing circle syringe |
| US20180028758A1 (en) * | 2016-07-26 | 2018-02-01 | Jian-Yu JIA | Safety syringe |
| CN209734661U (en) * | 2018-12-20 | 2019-12-06 | 伦若森 | Low-resistance syringe |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11701509B2 (en) | Compressible cannula valve | |
| CN102985047B (en) | Fluid transfer devices with sealing arrangement | |
| EA010190B1 (en) | Injection device | |
| WO1999052578A3 (en) | Syringe assembly | |
| CN100563741C (en) | Be used to connect the controlled release structure of medical treatment device | |
| JP2007517589A5 (en) | ||
| CN103987414B (en) | Syringe for high pressure injector | |
| CN101854970B (en) | Syringe with exchangeable needle | |
| SE447340B (en) | SYRINGE | |
| US11413220B2 (en) | Vented air release coupling and method of using the same | |
| CN109481787A (en) | A kind of injection with low resistance | |
| US3101711A (en) | Automatic hypodermic unit | |
| CN204840538U (en) | Injection with low resistance | |
| CN209734661U (en) | Low-resistance syringe | |
| CN209137574U (en) | A kind of Needleless injection connector | |
| CN203196088U (en) | Vacuum retracting type safety injection syringe with multiple chambers | |
| WO2022037505A1 (en) | Injection device and exchange system comprising injection device | |
| CN111888577B (en) | Medical syringe | |
| CN209301912U (en) | A kind of high-pressure injection syringe cylinder structure | |
| CN210813162U (en) | Thyroid gland development puncture needle for general surgery department | |
| CN105963824A (en) | Rotary type needle-free connector keeping positive pressure constantly | |
| CN203280850U (en) | Syringe piston | |
| CN112716796B (en) | Power-assisted medicine dispensing device | |
| CN212383022U (en) | Negative pressure needle tube capable of extracting joint effusion with single hand | |
| CN205494565U (en) | Low remaining syringe that dispenses of liquid medicine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |