CA2307833A1 - Pipette and cartridge therefor - Google Patents
Pipette and cartridge therefor Download PDFInfo
- Publication number
- CA2307833A1 CA2307833A1 CA 2307833 CA2307833A CA2307833A1 CA 2307833 A1 CA2307833 A1 CA 2307833A1 CA 2307833 CA2307833 CA 2307833 CA 2307833 A CA2307833 A CA 2307833A CA 2307833 A1 CA2307833 A1 CA 2307833A1
- Authority
- CA
- Canada
- Prior art keywords
- pipette
- cartridge
- section
- combination
- bulb
- 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
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L9/00—Supporting devices; Holding devices
- B01L9/54—Supports specially adapted for pipettes and burettes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/02—Burettes; Pipettes
- B01L3/021—Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
- B01L2200/14—Process control and prevention of errors
- B01L2200/141—Preventing contamination, tampering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2400/00—Moving or stopping fluids
- B01L2400/04—Moving fluids with specific forces or mechanical means
- B01L2400/0475—Moving fluids with specific forces or mechanical means specific mechanical means and fluid pressure
- B01L2400/0481—Moving fluids with specific forces or mechanical means specific mechanical means and fluid pressure squeezing of channels or chambers
-
- 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
- B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
- B65D85/20—Containers, packaging elements or packages, specially adapted for particular articles or materials for incompressible or rigid rod-shaped or tubular articles
Landscapes
- Health & Medical Sciences (AREA)
- Clinical Laboratory Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Devices For Use In Laboratory Experiments (AREA)
Abstract
In combination, a pipette which defines an elongate receptacle including a tapered end section, an elongated intermediate section and a bulb section is adapted to fit into a cartridge which defines a hollow elongate body that includes a restricted end portion, an elongate intermediate hollow portion and a collar portion which is adapted to contactingly engage a portion of the bulb section of the pipette so as to leave an uncovered bulb area to allow manual retrieval of the pipette from the cartridge.
Description
TITLE OF THE INVENTION
Pipette and cartridge therefor.
FIELD OF THE INVENTION
The present invention relates generally to a packaging system for pipettes and, more particularly, relates to the combination of a pipette and a cartridge for protecting the pipette from contamination.
BACKGROUND OF THE INVENTION
Pipettes are generally known as comprising a tube of glass with one end constricted and the other end fitted with a small rubber bulb; they are used to transfer, measure or absorb fluids which are drawn-up by suction and which are retained in the bulb section. More recently, pipettes have been made entirely of plastics material with the bulb section of the pipette being compressible to provide the required fluid suction.
At present, these plastic pipettes are supplied either in sealed plastic packages which must be torn to retrieve the pipettes or, in some other cases, they are provided in a container formed of two plastic parts sealed together wherein one part must be stripped or peeled off from the other part in order to have access to the pipette. In both cases, however, there is a risk of contamination of the pipette since manual contact can be made with any part of the pipette including the liquid drawing end thereof.
_2_ OBJECTS AND STATEMENT OF THE INVENTION
It is an object of the present invention to overcome the above problem of contamination of pipettes. This is achieved by providing a cartridge for the pipette wherein only one part of the pipette can be manually contacted during retrieval of the pipette from the cartridge.
The present invention therefore relates to a combination of a pipette and of a cartridge:
the pipette defining an elongate receptacle including:
a tapered end section with an inlet opening;
an elongated intermediate section; and a compressible bulb section for drawing fluids into the receptacle;
the cartridge defining a hollow elongate body including:
a restricted end portion adapted to receive therein the tapered end section of the pipette;
an elongate intermediate portion integral at one end thereof to the restricted end portion and adapted to receive therein the intermediate section of the pipette; and a collar portion integral to an opposite end of the intermediate portion contactingly fitting over a portion of the bulb section of the pipette so as to leave an uncovered area of the bulb section to allow manual retrieving of the pipette from the cartridge.
In one form of the invention, the cartridge and the pipette are made of the same plastics material and are formed from a single mold, preferably a blow mold, to form a series of identically pipettes and cartridges.
Other objects and further scope of applicability of the present invention will become apparent from the detailed description given hereinafter. It should be understood, however, that this detailed description, while indicating preferred embodiments of the invention, is given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art.
IN THE DRAWINGS
Figure 1 is an elevational view of the combination of a pipette and cartridge made in accordance with the present invention;
Figure 2 is an elevational view of the cartridge;
Figure 3 is an elevational view of the pipette; and Figure 4 shows a mold for making a series of pipettes and cartridges in accordance with the present invention.
DESCRIPTION OF PREFERRED EMBODIMENTS
Referring to figure 1, there is shown a cartridge 10 in which is contained a pipette 12, with a portion thereof extending outside the cartridge.
Referring to figure 2, the cartridge 10 consists of a hollow elongate body having a restricted end portion 14, integral, through a chamfered area 16, to an elongated intermediate portion 18 and terminating to a collar portion 20, the inner wall of which displays a projection 22.
Referring to figure 3, the pipette 12 consists of an elongate receptacle having a narrow end section 24 with an inlet opening 25 and a tapered conical section 26 integral with an intermediate section 28 to which is integrally formed a bulb section 30. Portions 28 and 30 are separated by a conical area 32 and a straight area 34 that displays an annular groove 36. The groove has a dimension to complementarily receive therein projection 22 of the cartridge 10.
As can be seen in figure 1, the pipette 12 fits into the cartridge 10 so that end section 24 is received in end portion 14, the intermediate sections 26 and 28 are received in the intermediate portion 18 and part of the bulb section 30 is received in the collar portion 20, thus leaving a part of the bulb section 30 uncovered so that it can be manually grasped by a user for its retrieval from the cartridge.
The pipette and the cartridge are made of plastics material which is somewhat flexible so that the bulb section 30 of the pipette can be compressed during use for drawing fluids inside the pipette as well as expelling said fluids.
One preferred plastics material is polyethylene having a low density.
In one form of the invention, the cartridges and the pipettes of the present invention are made in a single blow mold; one example of a two-part arrangement of such a mold is illustrated in figure 4 showing cartridge recesses 10' and pipette recesses 12'.
Although the invention has been described above with respect with one specific form, it will be evident to a person skilled in the art that it may be modified and refined in various ways. It is therefore wished to have it understood that the present invention should not be limited in scope, except by the terms of the following claims.
Pipette and cartridge therefor.
FIELD OF THE INVENTION
The present invention relates generally to a packaging system for pipettes and, more particularly, relates to the combination of a pipette and a cartridge for protecting the pipette from contamination.
BACKGROUND OF THE INVENTION
Pipettes are generally known as comprising a tube of glass with one end constricted and the other end fitted with a small rubber bulb; they are used to transfer, measure or absorb fluids which are drawn-up by suction and which are retained in the bulb section. More recently, pipettes have been made entirely of plastics material with the bulb section of the pipette being compressible to provide the required fluid suction.
At present, these plastic pipettes are supplied either in sealed plastic packages which must be torn to retrieve the pipettes or, in some other cases, they are provided in a container formed of two plastic parts sealed together wherein one part must be stripped or peeled off from the other part in order to have access to the pipette. In both cases, however, there is a risk of contamination of the pipette since manual contact can be made with any part of the pipette including the liquid drawing end thereof.
_2_ OBJECTS AND STATEMENT OF THE INVENTION
It is an object of the present invention to overcome the above problem of contamination of pipettes. This is achieved by providing a cartridge for the pipette wherein only one part of the pipette can be manually contacted during retrieval of the pipette from the cartridge.
The present invention therefore relates to a combination of a pipette and of a cartridge:
the pipette defining an elongate receptacle including:
a tapered end section with an inlet opening;
an elongated intermediate section; and a compressible bulb section for drawing fluids into the receptacle;
the cartridge defining a hollow elongate body including:
a restricted end portion adapted to receive therein the tapered end section of the pipette;
an elongate intermediate portion integral at one end thereof to the restricted end portion and adapted to receive therein the intermediate section of the pipette; and a collar portion integral to an opposite end of the intermediate portion contactingly fitting over a portion of the bulb section of the pipette so as to leave an uncovered area of the bulb section to allow manual retrieving of the pipette from the cartridge.
In one form of the invention, the cartridge and the pipette are made of the same plastics material and are formed from a single mold, preferably a blow mold, to form a series of identically pipettes and cartridges.
Other objects and further scope of applicability of the present invention will become apparent from the detailed description given hereinafter. It should be understood, however, that this detailed description, while indicating preferred embodiments of the invention, is given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art.
IN THE DRAWINGS
Figure 1 is an elevational view of the combination of a pipette and cartridge made in accordance with the present invention;
Figure 2 is an elevational view of the cartridge;
Figure 3 is an elevational view of the pipette; and Figure 4 shows a mold for making a series of pipettes and cartridges in accordance with the present invention.
DESCRIPTION OF PREFERRED EMBODIMENTS
Referring to figure 1, there is shown a cartridge 10 in which is contained a pipette 12, with a portion thereof extending outside the cartridge.
Referring to figure 2, the cartridge 10 consists of a hollow elongate body having a restricted end portion 14, integral, through a chamfered area 16, to an elongated intermediate portion 18 and terminating to a collar portion 20, the inner wall of which displays a projection 22.
Referring to figure 3, the pipette 12 consists of an elongate receptacle having a narrow end section 24 with an inlet opening 25 and a tapered conical section 26 integral with an intermediate section 28 to which is integrally formed a bulb section 30. Portions 28 and 30 are separated by a conical area 32 and a straight area 34 that displays an annular groove 36. The groove has a dimension to complementarily receive therein projection 22 of the cartridge 10.
As can be seen in figure 1, the pipette 12 fits into the cartridge 10 so that end section 24 is received in end portion 14, the intermediate sections 26 and 28 are received in the intermediate portion 18 and part of the bulb section 30 is received in the collar portion 20, thus leaving a part of the bulb section 30 uncovered so that it can be manually grasped by a user for its retrieval from the cartridge.
The pipette and the cartridge are made of plastics material which is somewhat flexible so that the bulb section 30 of the pipette can be compressed during use for drawing fluids inside the pipette as well as expelling said fluids.
One preferred plastics material is polyethylene having a low density.
In one form of the invention, the cartridges and the pipettes of the present invention are made in a single blow mold; one example of a two-part arrangement of such a mold is illustrated in figure 4 showing cartridge recesses 10' and pipette recesses 12'.
Although the invention has been described above with respect with one specific form, it will be evident to a person skilled in the art that it may be modified and refined in various ways. It is therefore wished to have it understood that the present invention should not be limited in scope, except by the terms of the following claims.
Claims (6)
1. In combination, a pipette and a cartridge therefor:
said pipette defining an elongate receptacle including:
a tapered end section having an inlet opening;
an elongated intermediate section; and a compressible bulb section for drawing fluids into said receptacle;
said cartridge defining a hollow elongate body including:
a restricted end portion adapted to receive therein said tapered end section of said pipette;
an elongate intermediate portion integral at one end thereof to said restricted end portion and adapted to receive therein said intermediate section of said pipette;
and a collar portion integral to an opposite end of said intermediate portion contactingly engaging a portion of said bulb section of said pipette so as to leave an uncovered area of said bulb section to allow manual retrieval of said pipette from said cartridge.
said pipette defining an elongate receptacle including:
a tapered end section having an inlet opening;
an elongated intermediate section; and a compressible bulb section for drawing fluids into said receptacle;
said cartridge defining a hollow elongate body including:
a restricted end portion adapted to receive therein said tapered end section of said pipette;
an elongate intermediate portion integral at one end thereof to said restricted end portion and adapted to receive therein said intermediate section of said pipette;
and a collar portion integral to an opposite end of said intermediate portion contactingly engaging a portion of said bulb section of said pipette so as to leave an uncovered area of said bulb section to allow manual retrieval of said pipette from said cartridge.
2. A combination as defined in claim 1, comprising inter-engaging means on said collar portion of said cartridge and on said pipette to secure said pipette to said cartridge.
3. A combination as defined in claim 2, wherein said inter-engaging means consist of a projection on an inner wall of said collar portion and of an annular groove on said bulb section.
4. A combination as defined in claim 1, 2 or 3, wherein said pipette and said cartridge are made of plastics material.
5. A combination as defined in claim 4, wherein said plastics material is the same for said pipette and said cartridge.
6. A combination as defined in claim 5, wherein said pipette and said cartridge are made of blow molded plastics material wherein a mold is used to form simultaneously a series of said pipettes and said cartridges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2307833 CA2307833A1 (en) | 2000-05-09 | 2000-05-09 | Pipette and cartridge therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2307833 CA2307833A1 (en) | 2000-05-09 | 2000-05-09 | Pipette and cartridge therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2307833A1 true CA2307833A1 (en) | 2001-11-09 |
Family
ID=4166108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2307833 Abandoned CA2307833A1 (en) | 2000-05-09 | 2000-05-09 | Pipette and cartridge therefor |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2307833A1 (en) |
-
2000
- 2000-05-09 CA CA 2307833 patent/CA2307833A1/en not_active Abandoned
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |