CN110448765A - Piston component and syringe - Google Patents
Piston component and syringe Download PDFInfo
- Publication number
- CN110448765A CN110448765A CN201910825971.2A CN201910825971A CN110448765A CN 110448765 A CN110448765 A CN 110448765A CN 201910825971 A CN201910825971 A CN 201910825971A CN 110448765 A CN110448765 A CN 110448765A
- Authority
- CN
- China
- Prior art keywords
- syringe
- piston
- sealing element
- wall
- piston component
- 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
- 238000007789 sealing Methods 0.000 claims abstract description 127
- 238000009826 distribution Methods 0.000 claims abstract description 5
- 238000009434 installation Methods 0.000 claims description 15
- 210000002421 cell wall Anatomy 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 15
- 239000000463 material Substances 0.000 description 9
- 239000000243 solution Substances 0.000 description 9
- 229920001971 elastomer Polymers 0.000 description 7
- 239000012530 fluid Substances 0.000 description 7
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 3
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 3
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 3
- 239000004417 polycarbonate Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 230000009466 transformation 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
- A61M5/3129—Syringe barrels
-
- 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
- A61M5/3129—Syringe barrels
- A61M2005/3131—Syringe barrels specially adapted for improving sealing or sliding
Abstract
The present invention discloses a kind of piston component and syringe.Wherein, piston component includes piston, and the piston sliding is set in the syringe, and the outer wall of the piston is recessed with mounting groove；With two sealing elements, two sealing elements are embedded in the mounting groove, and along the axial direction distribution of the syringe, the two sealing element abuttings are sealed between the outer wall of the piston and the inner wall of the syringe.Technical solution of the present invention guarantees the leakproofness between the piston and syringe of syringe, while reducing the manufacturing cost of syringe, and reduce the generation of the bubble in the use process of syringe, to improve the safety that syringe uses.
Description
Technical field
The present invention relates to the field of medical instrument technology, in particular to the injection of a kind of piston component and the application piston component
Device.
Background technique
Syringe is a kind of common medical instruments, is mainly used for generally comprising syringe, sliding to human injection's medical fluid
The piston that is set in syringe, the rubber plug being sheathed on the outside of piston and the push rod for being connected to piston.However, in the prior art
The rubber plug volume being arranged on the outside of the piston of syringe is larger, so that the production material of rubber plug increases substantially, causes to increase
The manufacturing cost of syringe.
Above content is only used for the technical solution that auxiliary understands the application, does not represent and recognizes that above content is existing skill
Art.
Summary of the invention
The main object of the present invention is to provide a kind of piston component, is applied to syringe, it is intended to guarantee the piston of syringe
Leakproofness between syringe, while reducing the manufacturing cost of syringe.
To achieve the above object, piston component proposed by the present invention includes:
Piston, the piston sliding are set in the syringe, and the outer wall of the piston is recessed with mounting groove；With
Two sealing elements, two sealing elements are embedded in the mounting groove, and along the axial direction distribution of the syringe, described in two
Sealing element abutting is sealed between the outer wall of the piston and the inner wall of the syringe.
In one embodiment of this invention, the outer wall of the piston is recessed there are two the mounting groove, a sealing element
It is embedded in a mounting groove.
In one embodiment of this invention, the cell wall of the mounting groove is equipped with or one of card slot, the sealing
Part is equipped with the wherein another of fixture block or card slot, and the fixture block is caught in the card slot, is connected to the sealing element described
Piston.
In one embodiment of this invention, the fixture block is set to one of the sealing element towards the mounting groove groove bottom wall
Side, the card slot are set to the groove bottom wall of the mounting groove.
In one embodiment of this invention, the longitudinal section of the sealing element is square setting.
In one embodiment of this invention, defining the depth that the sealing element is embedded in the mounting groove is D1, 1mm≤D1
≤6mm。
In one embodiment of this invention, define the sealing element in the glide direction of the piston with a thickness of D2,
1mm≤D2≤7mm。
In one embodiment of this invention, defining the sealing element to protrude the height of the piston outer wall is D3, 0.5mm≤
D3≤1.5mm。
The present invention also proposes a kind of syringe, comprising:
Syringe；
Piston component, the piston component sliding are set in the syringe, and the piston component includes piston and two sealings
Part, the piston sliding are set in the syringe, and the outer wall of the piston is recessed with mounting groove；Two sealing elements are embedded at institute
It states in mounting groove, and along the axial direction distribution of the syringe, two sealing elements abut the outer wall for being sealed in the piston and described
Between the inner wall of syringe；And
Push rod, the push rod are connected to the piston component.
In one embodiment of this invention, the inner wall of the syringe is equipped with inclined surface in tube port position, in the longitudinal section of syringe
In, the distance between described inclined surface is in be gradually increased setting by the nozzle of cylinder bottom wall to the syringe of the syringe.
It is close by two in piston component when the piston component of technical solution of the present invention is installed in the syringe of syringe
Sealing abuts between the piston and syringe being sealed in piston component, to realize close between piston and syringe in syringe
Envelope, and the setting of two sealing elements has dual sealing functions, so further ensure that the sealing between piston and syringe
Effect.Meanwhile making for production material is so greatly reduced instead of the biggish rubber plug of volume by two sealing elements
With to reduce the manufacturing cost of syringe.Further, the setting of the mounting groove of the outer wall of piston increases two sealing elements
Contact area between piston, to improve leakproofness between the two and the stability of installation.Also, in syringe
Use process in, medical fluid is directly contacted with the end face of piston, so reduce the contact area between medical fluid and two sealing elements,
To reduce medical fluid due to contacting the bubble generated with sealing element, to improve the safety that syringe uses.
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
The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the partial structural diagram of one embodiment of syringe of the present invention；
Fig. 2 is the partial cutaway schematic of one embodiment of syringe of the present invention；
Fig. 3 is the diagrammatic cross-section of one embodiment of inventive piston component；
Fig. 4 is the partial structural diagram of the syringe of syringe of the present invention.
Drawing reference numeral explanation:
| Label | Title | Label | Title |
| 100 | Syringe | 212 | Card slot |
| 200 | Piston component | 220 | Sealing element |
| 210 | Piston | 221 | Fixture block |
| 211 | Mounting groove |
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
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 embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute is only used in the embodiment of the present invention
In explaining in relative positional relationship, the motion conditions etc. under a certain particular pose (as shown in the picture) between each component, if should
When particular pose changes, then directionality instruction also correspondingly changes correspondingly.
In the present invention unless specifically defined or limited otherwise, term " connection ", " fixation " etc. shall be understood in a broad sense,
For example, " fixation " may be a fixed connection, it may be a detachable connection, or integral；It can be mechanical connection, be also possible to
Electrical connection；It can be directly connected, the connection inside two elements or two can also be can be indirectly connected through an intermediary
The interaction relationship of a element, unless otherwise restricted clearly.It for the ordinary skill in the art, can basis
Concrete condition understands the concrete meaning of above-mentioned term in the present invention.
In addition, the description for being related to " first ", " second " etc. in the present invention is used for description purposes only, and should not be understood as referring to
Show or imply its relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " are defined as a result,
Two " feature can explicitly or implicitly include at least one of the features.In addition, the meaning of the "and/or" occurred in full text
For including three schemes arranged side by side, by " A and/or B for ", including the scheme that A scheme or B scheme or A and B meet simultaneously.
In addition, the technical solution between each embodiment can be combined with each other, it can with those of ordinary skill in the art but must be
Based on realization, the combination of this technical solution will be understood that when conflicting or cannot achieve when occurs in the combination of technical solution
Be not present, also not the present invention claims protection scope within.
The present invention proposes a kind of piston component, is applied to syringe, syringe includes syringe.
Incorporated by reference to reference Fig. 1 and Fig. 2, in one embodiment of this invention, which includes piston 210 and two
Sealing element 220；Wherein, the sliding of piston 210 is set in syringe 100, and the outer wall of piston 210 is recessed with mounting groove 211；Two sealing elements
220 are embedded in mounting groove 211, and along the axial direction distribution of syringe 100, two sealing elements 220 abut the outer wall for being sealed in piston 210
Between the inner wall of syringe 100.
In one embodiment of this invention, the projection of piston component 200 and two sealing elements 220 can be circular configuration, when
So or square structure, the application are not construed as limiting this, and concrete shape can be set according to the shape of 100 inner wall of syringe
It sets, guarantees that piston component 200 and syringe 100 are adapted.In order to guarantee between 100 inner wall of piston 210 and syringe have compared with
Good sealing effect, the material is soft for the material opposing pistons 210 of two sealing elements 220.So that two sealing elements 220 are in piston
It can be squeezed between 210 and 100 inner wall of syringe and deformation occurs, while generate the contrary deformation bullet of a deformation
Power, the deformation elastic force drive sealing element 220 to restore to the original state, sealing element 220 are made to be tightly attached to the outer wall and syringe of piston 210 respectively
100 inner wall, to improve the sealing effect of sealing element 220.Wherein, the material of sealing element 220 can be rubber or silica gel,
It certainly can also be other elastomers；And the material of piston 210 can be acrylonitrile-butadiene-styrene copolymer
(Acrylonitrile Butadiene Styrene plastic, abbreviation ABS) or polycarbonate (Polycarbonate, letter
Claim PC), naturally it is also possible to it is Other Engineering plastic material, the application does not make the specific material of sealing element 220 and piston 210
It limits.In addition, mounting groove 211 is mainly used for installing two sealing elements 220, therefore, it is one that the quantity of mounting groove 211, which can be,
At this point, two sealing elements 220 are installed on a mounting groove 211；Certainly, the quantity of mounting groove 211 is also possible to two, at this point, two
Sealing element 220 selects an installation in two mounting grooves 211, i.e. a sealing element 220 is installed in a mounting groove 211, and the application is to this
It is not construed as limiting, can be realized the installation of sealing element 220.
When the piston component 200 of technical solution of the present invention is installed in the syringe 100 of syringe, pass through piston component
Two sealing elements 220 abutting in 200 is sealed between the piston 210 in piston component 200 and syringe 100, to realize note
Sealing in emitter between piston 210 and syringe 100, and the setting of two sealing elements 220 have dual sealing functions, so into
It ensure that one step the sealing effect between piston 210 and syringe 100.Meanwhile by two sealing elements 220 instead of volume compared with
Big rubber plug, has so been greatly reduced the use of production material, to reduce the manufacturing cost of syringe.Further
, the setting of the mounting groove 211 of the outer wall of piston 210 increases the contact area between two sealing elements 220 and piston 210, from
And improve leakproofness between the two and the stability of installation.Also, in the use process of syringe, medical fluid and piston
210 end face directly contacts, and so reduces the contact area between medical fluid and two sealing elements 220, with reduce medical fluid due to
The bubble that the contact of sealing element 220 generates, to improve the safety that syringe uses.
In one embodiment of this invention, the outer wall of piston 210 is recessed there are two mounting groove 211, and a sealing element 220 is embedded
In in a mounting groove 211.
It is appreciated that each mounting groove 211 has position-limiting action to the sealing element 220 being located in the mounting groove 211, thus
Improve the stability of two sealing elements 220 installation.Meanwhile the setting of two mounting grooves 211 also increases sealing element 220 and piston
210 contact area, to further improve the sealing effect of sealing element 220.
In one embodiment of this invention, the cell wall of mounting groove 211 is equipped with or one of card slot 212, sealing element
220 are equipped with the wherein another of fixture block 221 or card slot 212, and fixture block 221 is caught in card slot 212, is connected to sealing element 220
Piston 210.
It is connected between sealing element 220 and piston 210 it is appreciated that the cooperation of fixture block 221 and card slot 212 further enhances
Stability, avoid sealing element 220 from generating shaking since piston 210 slides in syringe 100, cause influence sealing element 220
Sealing effect.
In one embodiment of this invention, fixture block 221 is set to side of the sealing element 220 towards 211 groove bottom wall of mounting groove, card
Slot 212 is set to the groove bottom wall of mounting groove 211.
It is appreciated that fixture block 221 is set to sealing element 220, card slot 212 is set to the groove bottom wall of mounting groove 211, so can be with
The intensity for guaranteeing sealing element 220 avoids sealing element 220 from being limited by self-strength and influence setting for fixture block 221 and card slot 212
It sets.And fixture block 221 is set to side of the sealing element 220 towards 211 groove bottom wall of mounting groove, card slot 212 is set to the slot of mounting groove 211
Bottom wall, so that the two opposite side walls of sealing element 220 and the groove sidewall of mounting groove 211 still maintain the sealing state of abutting,
To ensure that the sealing effect of sealing element 220 while improving the stability of installation of sealing element 220.
Referring to FIG. 3, in one embodiment of this invention, the longitudinal section of sealing element 220 is square setting.
It is appreciated that so set, making sealing element 220 that there is a certain distance, realization in the axial direction of syringe 100
The face contact of 100 inner wall of sealing element 220 and syringe, avoids sealing element 220 and line contact occurs for 100 inner wall of syringe, to protect
The sealing effect of sealing element 220 is demonstrate,proved.
In one embodiment of this invention, in one embodiment of this invention, it defines sealing element 220 and is embedded in mounting groove 211
Interior depth is D1, 1mm≤D1≤6mm。
It is appreciated that as the depth D of mounting groove 2111When < 1mm, the stability of the installation of sealing element 220 is so influenced,
The contact area between sealing element 220 and piston 210 is also reduced simultaneously, reduces the sealing effect of sealing element 220.Work as mounting groove
211 depth D1When > 6mm, the internal diameter of sealing element 220 and the outer diameter of piston 210 have big difference, and are so easy so that sealing element
220 inconvenience are installed on 210, piston, influence the installation effectiveness of sealing element 220.Therefore, by the depth D of mounting groove 2111Setting
Are as follows: 1mm≤D1≤ 6mm so can guarantee the sealing effect of sealing element 220, and be convenient for the installation of sealing element 220.Wherein, pacify
The depth D of tankage 2111It can be 1mm, 2mm, 3mm, 4mm, 5mm, 6mm etc., naturally it is also possible to for arbitrarily taking for the above section
Value, the application is to D1Refer specifically to be not construed as limiting.
In one embodiment of this invention, define sealing element 220 in the glide direction of piston 210 with a thickness of D2, 1mm
≤D2≤7mm。
It is appreciated that as the thickness D of sealing element 2202When < 1mm, so that the contact between sealing element 220 and inner wall of the pipe
Area is smaller, leads to the sealing effect for influencing sealing element 220.As the thickness D of sealing element 2202When > 7mm, so that sealing element 220
Contact area between inner wall of the pipe is excessive, causes the frictional force between 100 inner wall of sealing element 220 and syringe to increase, so
Sliding in inconvenient piston component 200 and syringe 100, while also reducing the service life of sealing element 220.Therefore, it will seal
The thickness D of part 2202Setting are as follows: 1mm≤D2≤ 7mm, so can guarantee the sealing effect of sealing element 220, and can guarantee close
Frictional force size between 100 inner wall of sealing 220 and syringe is suitable, in order to sliding of the piston component 200 in syringe 100.
Wherein, the thickness D of sealing element 2202It can be 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm etc., naturally it is also possible to be the above area
Between any value, the application is to D2Refer specifically to be not construed as limiting.
In one embodiment of this invention, defining sealing element 220 to protrude the height of 210 outer wall of piston is D3, 0.5mm≤D3
≤1.5mm。
It is appreciated that when sealing element 220 protrudes the height D of 210 outer wall of piston3When < 0.5mm, make its in syringe 100
Magnitude of interference between wall is smaller, and the deformation degree for causing it to occur after the extruding by 100 inner wall of syringe is smaller, and then generates
Deformation elastic force it is also smaller, in the case where the lesser deformation elastic force drives, so that being bonded between sealing element 220 and 100 inner wall of syringe
Degree reduces, to affect the sealing effect of sealing element 220.When sealing element 220 protrudes the height D of 210 outer wall of piston3>
When 1.5mm, keep its magnitude of interference between 100 inner wall of syringe larger, i.e. the internal diameter phase of the outer diameter of sealing element 220 and syringe 100
Difference is larger, causes piston component 200 to be difficult to be installed into the inner wall of syringe 100, reduces the installation effect of piston component 200.Therefore,
Sealing element 220 is protruded to the height D of 210 outer wall of piston3Setting are as follows: 0.5mm≤D3≤ 1.5mm so ensure that sealing element
220 sealing effect, and piston component 200 is easily installed in syringe 100, improve installation effectiveness.Wherein, sealing element
The height D of 220 protrusion 210 outer walls of piston3Can for 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, 1.1mm,
1.2mm, 1.3mm, 1.4mm, 1.5mm, naturally it is also possible to be any value in the above section, the application is to D3Refer specifically to do not make
It limits.
The present invention also proposes a kind of syringe, referring to FIG. 1, the syringe include syringe 100, piston component 200 and
Push rod, the specific structure of the piston component 200 is referring to above-described embodiment, since this syringe uses above-mentioned all embodiments
Whole technical solutions, therefore at least all beneficial effects brought by the technical solution with above-described embodiment, it is not another herein
One repeats.Wherein, the sliding of piston component 200 is set in the syringe 100；Push rod is connected to piston component 200.
Referring to FIG. 4, in one embodiment of this invention, the inner wall of syringe 100 is equipped with inclined surface in tube port position, in syringe
In 100 longitudinal section, the distance between inclined surface is in be gradually increased setting by the nozzle of cylinder bottom wall to the syringe 100 of syringe 100.
It is appreciated that inclined surface, which is installed in syringe 100 piston component 200, has contraposition guiding role, in the inclination
Under the guiding function in face, convenient for the accurate installation of piston component 200, installation effectiveness is improved.Wherein, inclined surface can be syringe
100 inner walls carry out chamfering in tube port position and are formed；It is of course also possible to be that 100 inner wall of syringe is ladder-like in being formed adjacent to nozzle,
The junction of two ladders forms inclined surface, and the application is not construed as limiting this, can be formed in tube port position and have to piston component 200
There is the inclined surface of guiding role.
The above description is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all at this
Under the inventive concept of invention, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/use indirectly
It is included in other related technical areas in scope of patent protection of the invention.
Claims (10)
1. a kind of piston component is applied to syringe, the syringe includes syringe, which is characterized in that the piston component packet
It includes:
Piston, the piston sliding are set in the syringe, and the outer wall of the piston is recessed with mounting groove；With
Two sealing elements, two sealing elements are embedded in the mounting groove, and along the axial direction distribution of the syringe, two sealings
Part abutting is sealed between the outer wall of the piston and the inner wall of the syringe.
2. piston component as described in claim 1, which is characterized in that the outer wall of the piston is recessed, and there are two the installations
Slot, a sealing element are embedded in a mounting groove.
3. piston component as claimed in claim 2, which is characterized in that the cell wall of the mounting groove be equipped with or card slot wherein
One of, the sealing element is equipped with the wherein another of fixture block or card slot, and the fixture block is caught in the card slot, makes the sealing
Part is connected to the piston.
4. piston component as claimed in claim 3, which is characterized in that the fixture block is set to the sealing element towards the installation
The side of slot groove bottom wall, the card slot are set to the groove bottom wall of the mounting groove.
5. the piston component as described in any one of Claims 1-4, which is characterized in that the cross section of the sealing element is in
Rectangular setting.
6. piston component as claimed in claim 5, which is characterized in that define the depth that the sealing element is embedded in the mounting groove
Degree is D1, 1mm≤D1≤6mm。
7. piston component as claimed in claim 5, which is characterized in that define the sealing element along the glide direction of the piston
On with a thickness of D2, 1mm≤D2≤7mm。
8. piston component as claimed in claim 5, which is characterized in that define the height that the sealing element protrudes the piston outer wall
Degree is D3, 0.5mm≤D3≤1.5mm。
9. a kind of syringe, which is characterized in that the syringe includes:
Syringe；
The piston component as described in any one of claim 1 to 8, the piston component sliding are set in the syringe；And
Push rod, the push rod are connected to the piston component.
10. syringe as claimed in claim 9, which is characterized in that the inner wall of the syringe is equipped with inclined surface, In in tube port position
In the longitudinal section of syringe, the distance between described inclined surface is in gradually to increase by the nozzle of cylinder bottom wall to the syringe of the syringe
Big setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910825971.2A CN110448765A (en) | 2019-08-30 | 2019-08-30 | Piston component and syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910825971.2A CN110448765A (en) | 2019-08-30 | 2019-08-30 | Piston component and syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110448765A true CN110448765A (en) | 2019-11-15 |
Family
ID=68490491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910825971.2A Pending CN110448765A (en) | 2019-08-30 | 2019-08-30 | Piston component and syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110448765A (en) |
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| CN211327472U (en) * | 2019-08-30 | 2020-08-25 | 深圳安特医疗股份有限公司 | Piston assembly and syringe |
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