CA2024673A1 - Liquid drop dispensing tip - Google Patents
Liquid drop dispensing tipInfo
- Publication number
- CA2024673A1 CA2024673A1 CA 2024673 CA2024673A CA2024673A1 CA 2024673 A1 CA2024673 A1 CA 2024673A1 CA 2024673 CA2024673 CA 2024673 CA 2024673 A CA2024673 A CA 2024673A CA 2024673 A1 CA2024673 A1 CA 2024673A1
- Authority
- CA
- Canada
- Prior art keywords
- dispensing tip
- liquid drop
- drop dispensing
- orifice
- tip
- 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.)
- Abandoned
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D47/00—Closures with filling and discharging, or with discharging, devices
- B65D47/04—Closures with discharging devices other than pumps
- B65D47/06—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages
- B65D47/18—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages for discharging drops; Droppers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Medical Preparation Storing Or Oral Administration Devices (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
Abstract
TITLE OF THE INVENTION
LIQUID DROP DISPENSING TIP
ABSTRACT OF THE INVENTION
A liquid drop dispensing tip for a standard squeeze bottle, having a convoluted delivery path provides low cost manufacturing, and the ability to control drop size and to prevent streaming.
LIQUID DROP DISPENSING TIP
ABSTRACT OF THE INVENTION
A liquid drop dispensing tip for a standard squeeze bottle, having a convoluted delivery path provides low cost manufacturing, and the ability to control drop size and to prevent streaming.
Description
202~73 TITLE OF T~E INVENTION
LIQUID DROP DISPENSING TIP
DETAILED DESCRIPTION OF THE INVENTION
This invention is concerned with a novel design of a dropper tip useful on conventional medicine droppers used primarily for dispensing ophthalmic medications.
The conventional ophthalmic drug delivery system, FIG. 1, consisting of a dropper tip, 1, and squeeze bottle, 2, is intended to deliver the medication in a drop by drop manner, the drops being of a uniform predetermined size. The drop size control is achieved by means of the hydraulic resistence presented by a small diameter channel, 3, forming the beginning of the straight delivery channel, 4, in the dropper tip, 1, having a diameter of about O.006 inches or 0.150 mm.
: 30 202~73 which restricts the flow from the squeeze bottle, 2.
This conventional drug delivery system generally serves the intended purpose but in the hands of many patients does not always result in discrete drops but rather streaming of the liquid resulting in loss of medication, and possibly soiled clothes and other fabrics.
In addition conventional dropper tips with the narrow channel, 3, are commonly fabricated from lo plastics by injection molding techniques which require a complex technology not readily available in less developed countries.
Now with the present invention there is provided a dropper tip providing better delivery control, that requires a lower level of technology to fabricate, thus lowering the cost per unit device, and permitting fabrication practically anywhere in the world.
These advantages are achieved by the design of the tip, 5, shown in Fig. 2, wherein entry to the delivery channel, 6, iæ not through a narrow channel, but rather through an orifice, 7, which is not concentric with the delivery channel but rather at an angle, preferably right angle, to it on the side of the hub, 8.
In the novel tip of this invention the restriction to flow or hydraulic resistance, ls provided, not by a narrow channel that is difficult to fabricate, but in part by a convoluted delivery path causing the liquid flow to change direction as it enters the delivery channel which impedes the conversion of the internal static energy provided by squeezing of the bottle into the kinetic energy of the liquid flow.
LIQUID DROP DISPENSING TIP
DETAILED DESCRIPTION OF THE INVENTION
This invention is concerned with a novel design of a dropper tip useful on conventional medicine droppers used primarily for dispensing ophthalmic medications.
The conventional ophthalmic drug delivery system, FIG. 1, consisting of a dropper tip, 1, and squeeze bottle, 2, is intended to deliver the medication in a drop by drop manner, the drops being of a uniform predetermined size. The drop size control is achieved by means of the hydraulic resistence presented by a small diameter channel, 3, forming the beginning of the straight delivery channel, 4, in the dropper tip, 1, having a diameter of about O.006 inches or 0.150 mm.
: 30 202~73 which restricts the flow from the squeeze bottle, 2.
This conventional drug delivery system generally serves the intended purpose but in the hands of many patients does not always result in discrete drops but rather streaming of the liquid resulting in loss of medication, and possibly soiled clothes and other fabrics.
In addition conventional dropper tips with the narrow channel, 3, are commonly fabricated from lo plastics by injection molding techniques which require a complex technology not readily available in less developed countries.
Now with the present invention there is provided a dropper tip providing better delivery control, that requires a lower level of technology to fabricate, thus lowering the cost per unit device, and permitting fabrication practically anywhere in the world.
These advantages are achieved by the design of the tip, 5, shown in Fig. 2, wherein entry to the delivery channel, 6, iæ not through a narrow channel, but rather through an orifice, 7, which is not concentric with the delivery channel but rather at an angle, preferably right angle, to it on the side of the hub, 8.
In the novel tip of this invention the restriction to flow or hydraulic resistance, ls provided, not by a narrow channel that is difficult to fabricate, but in part by a convoluted delivery path causing the liquid flow to change direction as it enters the delivery channel which impedes the conversion of the internal static energy provided by squeezing of the bottle into the kinetic energy of the liquid flow.
2~2~&7~
268/WHNl4 - 3 - 17999 In addition, the cross-section of the orifice can be of any shape such as circular, triangular, semicircular, irregular or rectangular, preferably the latter, in which case the hydraulic resistance to fluid delivery is determined in part by the dimensions of the rectangle a long and narrow rectangular orifice providing greater hydraulic resistance than a square orifice of the same cross-section area. Regardless of shape, the orifice lo has a cross-sectional area of about 0.015 to 0.02 mm2.
The size and shape of the orifice, 7, can be controlled by simplified molding techniques within desired specifications.
268/WHNl4 - 3 - 17999 In addition, the cross-section of the orifice can be of any shape such as circular, triangular, semicircular, irregular or rectangular, preferably the latter, in which case the hydraulic resistance to fluid delivery is determined in part by the dimensions of the rectangle a long and narrow rectangular orifice providing greater hydraulic resistance than a square orifice of the same cross-section area. Regardless of shape, the orifice lo has a cross-sectional area of about 0.015 to 0.02 mm2.
The size and shape of the orifice, 7, can be controlled by simplified molding techniques within desired specifications.
Claims (3)
1. A dropper tip for the controlled delivery of a liquid providing entry to the delivery channel by an orifice that is not concentric with the delivery channel.
2. The dropper tip of Claim 1 wherein the orifice has a cross-sectional area of about 0.015 to 0.02 mm2.
3. The dropper tip of claim 2, wherein the cross-section of the orifice is non-circular.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US40454089A | 1989-09-08 | 1989-09-08 | |
| US404,540 | 1989-09-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2024673A1 true CA2024673A1 (en) | 1991-03-09 |
Family
ID=23600011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2024673 Abandoned CA2024673A1 (en) | 1989-09-08 | 1990-09-05 | Liquid drop dispensing tip |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0416694B1 (en) |
| JP (1) | JPH069599B2 (en) |
| CA (1) | CA2024673A1 (en) |
| DE (1) | DE69010597T2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0720997U (en) * | 1993-09-21 | 1995-04-18 | 山崎産業株式会社 | Western style handrail device |
| US6098852A (en) * | 1999-01-27 | 2000-08-08 | Automatic Liquid Packaging, Inc. | Tip for liquid drop dispensing container |
| JP3922910B2 (en) * | 2001-10-31 | 2007-05-30 | 参天製薬株式会社 | Eye drops container with stepped part |
| EP1448452B1 (en) * | 2001-11-30 | 2005-08-10 | CROWN Packaging Technology, Inc. | A closure |
| CA2616392A1 (en) * | 2007-12-21 | 2009-06-21 | Pharmascience Inc. | Pharmaceutical delivery device |
| WO2019027025A1 (en) | 2017-08-04 | 2019-02-07 | クラレノリタケデンタル株式会社 | Member for discharging liquid and container |
| JP7066134B2 (en) * | 2017-08-04 | 2022-05-13 | クラレノリタケデンタル株式会社 | Liquid pouring materials and containers |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2834520A (en) * | 1956-06-15 | 1958-05-13 | Nyden Robert | Spouts for containers |
| GB874952A (en) * | 1960-05-30 | 1961-08-16 | Anchor Glass Company Ltd | A dropper device |
| EP0222944A1 (en) * | 1985-11-07 | 1987-05-27 | Delford O. Dougherty | Drop dispenser |
| DE3735909A1 (en) * | 1987-10-23 | 1989-05-03 | Hansen Bernd | DRIP BOTTLE AND METHOD FOR THEIR PRODUCTION |
| DE68902989T2 (en) * | 1988-12-20 | 1993-04-15 | Step Soc Tech Pulverisation | DEVICE FOR DISPENSING A LIQUID OR CREAM IN DROP SMALL VOLUME. |
-
1990
- 1990-09-01 EP EP90202323A patent/EP0416694B1/en not_active Expired - Lifetime
- 1990-09-01 DE DE1990610597 patent/DE69010597T2/en not_active Expired - Fee Related
- 1990-09-05 CA CA 2024673 patent/CA2024673A1/en not_active Abandoned
- 1990-09-06 JP JP2234650A patent/JPH069599B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP0416694B1 (en) | 1994-07-13 |
| JPH03111052A (en) | 1991-05-10 |
| DE69010597T2 (en) | 1995-01-26 |
| EP0416694A1 (en) | 1991-03-13 |
| JPH069599B2 (en) | 1994-02-09 |
| DE69010597D1 (en) | 1994-08-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |