CN1164195A - Medical glass container suitable for use in needleless injectors - Google Patents
Medical glass container suitable for use in needleless injectors Download PDFInfo
- Publication number
- CN1164195A CN1164195A CN 95196313 CN95196313A CN1164195A CN 1164195 A CN1164195 A CN 1164195A CN 95196313 CN95196313 CN 95196313 CN 95196313 A CN95196313 A CN 95196313A CN 1164195 A CN1164195 A CN 1164195A
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- container
- container according
- glass container
- double glazing
- plastic material
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
A cylindrical medical glass container (1) suitable for use in needleless injectors contains a liquid (4) and a piston (5) in contact with the liquid. By acting on the piston (5) with a ram, liquid (4) is highly pressurised and dispensed rapidly through a hole (3) in a container (1). To prevent the glass container from breaking during pressurisation, a comprehensive sleeve (6) is fitted to the outside of the container (1).
Description
The present invention relates to glass container, particularly those bear highly compressed glass container.
The open text in the world of WO95/03844 discloses a kind of needleless injector that is used for liquid medicine is imported skin.In injection process, can produce the high pressure of short time.The preferred embodiment of this invention requires a kind of liquid medicine to be stored in the allotter of glass container, and allotter is preferably in one and is used as in the cylindrical glass container of pressure vessel.For bearing these high pressure, container can be shaped on heavy wall.Yet this makes it make difficulty and cost improves.The shortcoming of these sizes and expense aspect has partly been offseted needleless injector and has been compared the potential advantage that is had with common hypodermic syringe.A purpose of the preferred embodiment of the present invention just provides a kind of glass container that can be used for needleless injector, and need not to have described heavy wall.
The principle that the present invention adopts is that if promptly glass surface remains on compressive stress state, glass can bear high pressure.The principle that adopts aspect glass fragmentation faced thinks that by the generation of total surface defective, when glass was subjected to stress, it was cracked to understand generation by micro-cracked the increasing rapidly of glass surface except that cracked.Glass surface is subjected to compressive stress, must overcome this stress before cracked growth may take place.
According to the invention provides a kind of container that is suitable for bearing high internal pressure, the compressor that it comprises a double glazing body and is used for exerting pressure on the double glazing body.
In one embodiment of the invention, compressor is a friction tight sleeve that is installed on the container body, applies compression stress to be preferably on the columniform wall at container.
Have found that to have the hole that diameter is 5mm, wall thickness is the cylinder of the borosilicate glass of 2.19mm, and is when standing the transient pressure of 80 internal pressures of clinging to and 4000 crust, cracked sometimes.And cylinder can not bear this pressure more than twice.The Merlon sleeve of interference fit with nominal of 0.05mm can make cylindrical shell bear at least 20 times this pressure and can not damage.
The preferred embodiments of the present invention are shown in the drawings, and this accompanying drawing is a schematic longitudinal sectional view.
Fig. 1 shows a kind of Needleless injection container 1 of glass, it comprise by inside and outside all be the main part that columniform wall defines, at the flange 2 of container one end and at the tapering part other end, that end at discharge orifice 3.The piston 5 that container 1 comprises injection 4 and can be free to slide.Sleeve 6 is interference fitted on the cylindrical wall of container 1.The screw thread 7 of sleeve 6 makes whole device can be screwed into and be fixed on the actuator (not shown) of syringe.Also can adopt many other methods that described device is fixed on the actuator, as snap-fitting, or ultrasonic bonding, bonding or metal clip etc.
During use, discharge orifice 3 is placed on the patient skin, and free-piston 5 is depressed by the pressure head of actuator.This impact is passed to injection 4, causes that pressure increases rapidly.This can cause producing corresponding tension on the wall of container 1, and container is broken.The part or all of opposing of compressive stress that produces by friction tight sleeve 6 stops above-mentioned breaking by the tension that hydraulic blow produces.
Therefore, as can be seen, when glass container was subjected to high pressure, the present invention can stop breaking of glass container, and the present invention also can exempt from destruction in the cover glass surface in storage process.
Sleeve 6 is preferably by transparent plastic, Merlon for example, and polyether-type phthalic acid ester (polyethertetrapthalate) polystyrene or cellulose esters (for example cellulose-acetate propionate) are made, and the capacity of container can be checked.Strength of glass can be by jammed effect (ionstaffing), warm prestress, or etch improves, and open text of the present invention allows for the material realizing the object of the invention and carry out and the various combinations of method.
Claims (9)
1. one kind is applicable to the glass container that bears high internal pressure, the compressor that it comprises a double glazing body and is used for exerting pressure on described double glazing body.
2. container according to claim 1 is characterized in that the common at least a portion of described double glazing body is columniform.
3. container according to claim 1, it is applicable to the container of doing in the needleless injector, it comprises the main part that is defined by inner cylindrical wall, at container one end one flange is arranged, and at the other end one tapering part that ends at discharge orifice is arranged.
4. container according to claim 3, the outer wall that it is characterized in that main part is columniform.
5. according to the described glass container of each claim of front, it is characterized in that described compressor is one to be a tight fit in the sleeve around the double glazing body.
6. container according to claim 5 is characterized in that sleeve made by plastic material.
7. container according to claim 6 is characterized in that described plastic material is transparent.
8. container according to claim 7 is characterized in that described plastic material selects in following material: Merlon, polyether-type phthalic acid ester, polystyrene and cellulose esters.
9. container according to Claim 8 is characterized in that, described plastic material is a cellulose-acetate propionate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95196313 CN1164195A (en) | 1994-11-19 | 1995-11-13 | Medical glass container suitable for use in needleless injectors |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9423505.8 | 1994-11-19 | ||
| CN 95196313 CN1164195A (en) | 1994-11-19 | 1995-11-13 | Medical glass container suitable for use in needleless injectors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1164195A true CN1164195A (en) | 1997-11-05 |
Family
ID=5083191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95196313 Pending CN1164195A (en) | 1994-11-19 | 1995-11-13 | Medical glass container suitable for use in needleless injectors |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1164195A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103816589A (en) * | 2014-03-03 | 2014-05-28 | 山东中保康医疗器具有限公司 | Large-volume multi-head needleless injector |
| CN104736992A (en) * | 2012-08-30 | 2015-06-24 | Lts勒曼治疗***股份公司 | Test device for dispensing a substance into a medium |
| CN108784884A (en) * | 2018-06-19 | 2018-11-13 | 丁文铃 | A kind of herding needleless injector |
-
1995
- 1995-11-13 CN CN 95196313 patent/CN1164195A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104736992A (en) * | 2012-08-30 | 2015-06-24 | Lts勒曼治疗***股份公司 | Test device for dispensing a substance into a medium |
| CN103816589A (en) * | 2014-03-03 | 2014-05-28 | 山东中保康医疗器具有限公司 | Large-volume multi-head needleless injector |
| CN108784884A (en) * | 2018-06-19 | 2018-11-13 | 丁文铃 | A kind of herding needleless injector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |