CN205095115U - Medical low resistance medicine dispenser - Google Patents
Medical low resistance medicine dispenser Download PDFInfo
- Publication number
- CN205095115U CN205095115U CN201520823009.2U CN201520823009U CN205095115U CN 205095115 U CN205095115 U CN 205095115U CN 201520823009 U CN201520823009 U CN 201520823009U CN 205095115 U CN205095115 U CN 205095115U
- Authority
- CN
- China
- Prior art keywords
- sealing ring
- core bar
- piston
- sealing washer
- prescription
- 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.)
- Expired - Fee Related
Links
Abstract
The utility model provides a medical low resistance medicine dispenser, belongs to the medical instrument field, including dispensing urceolus, core bar, piston and sealing washer, its characterized in that the sealing washer is I -shaped sealing washer, and its inside hollow structure that be on fitting with a contraceptive ring of the sealing washer side neighboring relative with runner band portion, is provided with one section circular groove section respectively. The top land is ARC structure, the middle part is connected with the core bar screw hole with sealing washer cooperation, lower part, and wherein the piston middle part is hollow structure. The utility model discloses an advantage: set up the sealing washer into I -shaped, it is sealed to have formed twice, just the groove section makes the sealing washer and the area of contact of the urceolus that makes up a prescription reduce, when guaranteeing sealed effect, has reduced frictional resistance. Piston and sealing washer produce the deformation at the in -process that dispenses along with the change of medicine dispenser internal pressure, and then balance pressure differential between medicine dispenser and the medicine bottle, reduce the resistance that dispenses. Piston and core bar be threaded connection, and for prior art's medicine dispenser's joint structure, the cooperation is safety more firmly.
Description
Technical field
This utility model relates to medical apparatus and instruments, specifically a kind of medical low-resistance dispenser.
Background technology
Dispenser is a kind of conventional medical apparatus and instruments, mainly comprises the urceolus that makes up a prescription, core bar and piston.Core bar front end is provided with sealing ring, in the process of making up a prescription, realizes sealing by sealing ring and the interference fit of outer tube inner wall of making up a prescription, and sealing ring and the frictional resistance that makes up a prescription between outer tube inner wall easily cause operator to need the very large power of use just can complete push-and-pull core bar.In addition, dispenser is inserted in medicine bottle when inhaling medicine, produce negative pressure because medicinal liquid reduces in medicine bottle, make core bar pull difficulty; During injection, because medicinal liquid increases pressure increase in medicine bottle, make core bar promote difficulty, increase operator's labor intensity, waste time and energy.Above-mentioned resistance easily causes core bar to come off in push-and-pull process, there is certain danger.
Utility model content
The purpose of this utility model, be exactly for solving prior art Problems existing, and devise a kind of medical low-resistance dispenser, this dispenser reduces the resistance of push-and-pull core bar in the process of making up a prescription, thus alleviates the labor intensity of operator.
The technical solution of the utility model is: a kind of medical low-resistance dispenser, comprises the urceolus that makes up a prescription, core bar, piston and sealing ring.Described sealing ring is I-shaped sealing ring, and make up a prescription between outer tube inner wall and form two seals, sealing ring inside is hollow structure, and on the neighboring, side that the upper ring section of I-shaped sealing ring is relative with lower ring portion, be respectively arranged with one section of circular groove section, described groove section sealing ring upper ring section be from bottom to top, from-inner-to-outer tilt, sealing ring lower ring portion be from top to bottom, from-inner-to-outer inclination.Described top land is globoidal structure, middle part coordinates with I-shaped sealing ring, bottom is connected with core bar screwed hole, is wherein set to hollow structure in the middle part of piston.
The external diameter of described I-shaped sealing ring is identical with the urceolus internal diameter that makes up a prescription.
The angle of described groove section and horizontal direction is α, and its span is 15 °≤α≤25 °.
Described piston and I-shaped sealing ring are interference fit.
The external diameter of described core bar is less than the urceolus internal diameter that makes up a prescription.
Be provided with screwed hole in the middle part of described core bar upper surface, described piston lower portion is the linkage section connecting core bar, and linkage section is provided with the screw thread coordinated with screwed hole.
The beneficial effects of the utility model draw by such scheme: 1. I-shaped by being set to by sealing ring, and make up a prescription between outer tube inner wall and define two seals, and the groove section in I-shaped sealing ring upper ring section and lower ring portion is arranged, sealing ring is reduced with the contact area of the urceolus that makes up a prescription, and in the push-and-pull process of core bar, sealing ring can be out of shape with the change of pressure, further ensure sealing effectiveness, relative to the interference fit of sealing ring in prior art with the urceolus that makes up a prescription, resistance reduces greatly.2. sealing ring and make up a prescription and define the hollow structure of certain space between urceolus, between piston and core bar, in core bar push-and-pull process, with the change of pressure in dispenser, piston produces distortion, so balance make up a prescription pressure differential in process between dispenser and medicine bottle, reduce to make up a prescription resistance.Wherein sealing ring and piston interference fit, while piston produces distortion, can produce distortion by crush seal circle further.3. be provided with screwed hole in the middle part of core bar upper surface, core bar and piston, for being threaded, relative to the interface arrangment of the dispenser of prior art, coordinate secure more.
As can be seen here, this utility model compared with prior art has substantive distinguishing features and progress, and its beneficial effect implemented also is apparent.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of sealing ring;
Fig. 3 is the structural representation of piston;
Fig. 4 is the structural representation of core bar.
Wherein, 1 is the urceolus that makes up a prescription, and 2 is piston, and 3 is core bar, and 4 is sealing ring, and 5 is groove section, and 6 is angle α, and 7 is screw thread, and 8 is screwed hole.
Detailed description of the invention
In order to understand this utility model better, explain embodiment of the present utility model in detail below in conjunction with accompanying drawing.
Detailed description of the invention: a kind of medical low-resistance dispenser, comprises the urceolus 1 that makes up a prescription, piston 2, core bar 3 and sealing ring 4.Described sealing ring 4 is I-shaped sealing ring, its inside is hollow structure, and on the neighboring, side that the upper ring section of I-shaped sealing ring 4 is relative with lower ring portion, be respectively arranged with one section of circular groove section 5, described groove section 5 sealing ring 4 upper ring section be from bottom to top, from-inner-to-outer tilt, sealing ring 4 lower ring portion be from top to bottom, from-inner-to-outer inclination.Described groove section 5 is 15 °≤α≤25 ° with the span of the angle α 6 of horizontal direction.Described piston 2 top is globoidal structure, middle part coordinates with I-shaped sealing ring 4, bottom coordinates with core bar screwed hole 8, is wherein set to hollow structure in the middle part of piston 2.The external diameter of described I-shaped sealing ring 4 is identical with urceolus 1 internal diameter that makes up a prescription.Described piston 2 is interference fit with I-shaped sealing ring 4.The external diameter of described core bar 3 is less than the internal diameter of the urceolus 1 that makes up a prescription.Be provided with screwed hole 8 in the middle part of described core bar 3 upper surface, described piston 2 bottom is the linkage section connecting core bar 3, and linkage section is provided with the screw thread 7 coordinated with screwed hole 8.
When push-and-pull core bar 3, along with reduction or the increase of dispenser internal pressure, the generation that piston 2 and sealing ring 4 can be corresponding is out of shape, while adjustment pressure, reduction resistance, ensure that sealing effectiveness.
Above-mentioned explanation is not to restriction of the present utility model; this utility model is also not limited in above-mentioned citing; the change that those skilled in the art make in essential scope of the present utility model, remodeling, interpolation or replacement, also should belong to protection domain of the present utility model.
Claims (6)
1. a medical low-resistance dispenser, comprise the urceolus that makes up a prescription, core bar, piston and sealing ring, it is characterized in that sealing ring is I-shaped sealing ring, its inside is hollow structure, the neighboring, side that the upper ring section of described I-shaped sealing ring is relative with lower ring portion is respectively arranged with one section of circular groove section, described groove section sealing ring upper ring section be from bottom to top, from-inner-to-outer tilt, sealing ring lower ring portion be from top to bottom, from-inner-to-outer inclination; Described top land is globoidal structure, middle part coordinates with I-shaped sealing ring, bottom is connected with core bar screwed hole, is wherein set to hollow structure in the middle part of piston.
2. medical low-resistance dispenser as claimed in claim 1, is characterized in that: the external diameter of described I-shaped sealing ring is identical with the urceolus internal diameter that makes up a prescription.
3. medical low-resistance dispenser as claimed in claim 1, is characterized in that: the angle of described groove section and horizontal direction is α, and its span is 15 °≤α≤25 °.
4. medical low-resistance dispenser as claimed in claim 1, is characterized in that: described I-shaped sealing ring and piston interference fit.
5. medical low-resistance dispenser as claimed in claim 1, is characterized in that: the external diameter of described core bar is less than the urceolus internal diameter that makes up a prescription.
6. the medical low-resistance dispenser as described in claim 2 or 5, is characterized in that: be provided with screwed hole in the middle part of described core bar upper surface, and described piston lower portion is the linkage section connecting core bar, and linkage section is provided with the screw thread coordinated with screwed hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520823009.2U CN205095115U (en) | 2015-10-23 | 2015-10-23 | Medical low resistance medicine dispenser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520823009.2U CN205095115U (en) | 2015-10-23 | 2015-10-23 | Medical low resistance medicine dispenser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205095115U true CN205095115U (en) | 2016-03-23 |
Family
ID=55510931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520823009.2U Expired - Fee Related CN205095115U (en) | 2015-10-23 | 2015-10-23 | Medical low resistance medicine dispenser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205095115U (en) |
-
2015
- 2015-10-23 CN CN201520823009.2U patent/CN205095115U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160323 Termination date: 20191023 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |