WO2004014476A1 - Cannula for dispensing viscous products, particularly medicinal pastes, ointments and creams - Google Patents

Cannula for dispensing viscous products, particularly medicinal pastes, ointments and creams Download PDF

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Publication number
WO2004014476A1
WO2004014476A1 PCT/EP2003/007878 EP0307878W WO2004014476A1 WO 2004014476 A1 WO2004014476 A1 WO 2004014476A1 EP 0307878 W EP0307878 W EP 0307878W WO 2004014476 A1 WO2004014476 A1 WO 2004014476A1
Authority
WO
WIPO (PCT)
Prior art keywords
cannula according
cannula
rod
product
face
Prior art date
Application number
PCT/EP2003/007878
Other languages
French (fr)
Inventor
Antonio Fontana
Original Assignee
Lameplast S.P.A.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Lameplast S.P.A. filed Critical Lameplast S.P.A.
Priority to JP2004526744A priority Critical patent/JP2005534434A/en
Priority to EP03784027A priority patent/EP1526890A1/en
Priority to AU2003258527A priority patent/AU2003258527A1/en
Priority to BRPI0313053A priority patent/BRPI0313053A2/en
Publication of WO2004014476A1 publication Critical patent/WO2004014476A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/00576—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes characterised by the construction of a piston as pressure exerting means, or of the co-operating container
    • 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
    • A61M2005/3101—Leak prevention means for proximal end of syringes, i.e. syringe end opposite to needle mounting end
    • 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
    • A61M2005/3117—Means preventing contamination of the medicament compartment of a syringe
    • A61M2005/3121—Means preventing contamination of the medicament compartment of a syringe via the proximal end of a syringe, i.e. syringe end opposite to needle cannula mounting end
    • 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
    • A61M5/31501—Means for blocking or restricting the movement of the rod or piston
    • A61M5/31505—Integral with the syringe barrel, i.e. connected to the barrel so as to make up a single complete piece or unit
    • A61M2005/31506—Integral with the syringe barrel, i.e. connected to the barrel so as to make up a single complete piece or unit formed as a single piece, e.g. moulded
    • 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
    • A61M5/31515—Connection of piston with piston rod

Definitions

  • the present invention relates to a cannula for dispensing fluid products, particularly medicinal pastes, ointments and creams or the like.
  • Cannulas for dispensing medicinal fluid products are known which are used in particular for vaginal and anal applications and are generally sold in packages together with tubes or bottles that contain one of these products.
  • Known cannulas are constituted by a cylinder that is adapted to contain the product and inside which a plunger can slide, said plunger being rigidly coupled to the end of a push rod.
  • the cylinder has an open end that can be coupled to the outlet of the tube, in order to introduce in said cylinder the amount of product to be applied and through which the introduced product is dispensed.
  • the opposite end of the cylinder is closed by a bottom provided with a hole in which the push rod is inserted slidingly, acting as an element for stopping the plunger in order to prevent its extraction.
  • the product introduced in the cannula is dispensed by acting on the push rod in the direction in which the plunger slides toward the open end of the cylinder.
  • cannulas which are constituted by a cylinder, in which the opposite ends are open and inside which a plunger is inserted slidingly, and by a push rod, which is separate from the plunger and can be coupled detachably thereto.
  • abutment undercuts or shoulders At the opposite ends of the cylinder there are abutment undercuts or shoulders, which are adapted to stop the sliding of the plunger, preventing it from sliding out under the action of the push rod.
  • cannulas can be sold in packages that contain a single push rod, a plurality of empty single-use cylinders to be used for the various applications, and one or more tubes of product.
  • one of the two ends of the cylinders can be coupled to the outlet of the tube in order to introduce the product in the cylinders, while the opposite end acts as a passage for the push rod.
  • these cannulas can be sold in packages that contain a single push rod and a plurality of cylinders that are already filled with the product to be applied and are provided, at their two opposite ends, with closure plugs that are removed at the time of use.
  • the cylinders and plungers are in fact usually formed by molding polymeric materials in two parts that are mutually separate and are then assembled; this entails designing and manufacturing two different molds and laborious assembly operations, which have a negative effect on the production times and costs of the cannulas.
  • the aim of the present invention is to eliminate the drawbacks noted above of known cannulas, by providing a cannula for dispensing fluid products, particularly medicinal pastes, ointments and creams or the like, that is structurally and constructively simpler, does not require additional assembly operations, allows to further contain production times and costs and to limit the waste of materials.
  • an object of the present invention is to provide a structure that is simple, relatively easy to provide in practice, safe in use, effective in operation, and has a relatively low cost.
  • the present cannula for dispensing fluid products which comprises an internally hollow cylindrical body that contains a fluid product and is provided at one end with an outlet for dispensing said product, which is associated with detachable closure means, and has a closure bottom at the opposite end, characterized in that it comprises means for the full and temporary coupling of said bottom to said body and a push rod that is detachably associable with said bottom, said full and temporary coupling means being suitable to release said bottom under the thrust of said rod entering said body and the uncoupled bottom being suitable to act as a plunger that can slide within said body in order to dispense the product from said outlet.
  • Figure 1 is a front view of the cylindrical body of the cannula according to the invention.
  • Figure 2 is a front view of the push rod of the cannula according to the invention
  • Figure 3 is a longitudinal sectional view of the body of Figure 1
  • Figure 4 is a longitudinal sectional view of the push rod of Figure 2;
  • Figure 5 is an enlarged-scale longitudinal sectional view of an end of the body of Figure 1;
  • Figure 6 is an enlarged-scale longitudinal sectional view of the cannula according to the invention during the association of the push rod with the bottom of the body;
  • Figure 7 is an enlarged-scale longitudinal sectional view of the cannula according to the invention during the dispensing of the product.
  • the reference numeral 1 generally designates a cannula for dispensing fluid products P, particularly medicinal pastes, ointments and creams or the like for vaginal or anal applications.
  • the cannula 1 comprises a cylindrical body 2, which is internally hollow and contains a product P and is provided, at its opposite ends, respectively with an outlet 3 for dispensing the product P, which is associated with removable closure means such as, for example, a film 4 that can be removed by tearing, and with a closure bottom 5.
  • the cannula 1 further comprises a push rod 6 that is detachably associable with the bottom 5.
  • the bottom 5 is rigidly coupled to the body 2 by way of full and temporary coupling means 7, which are suitable to release it under the thrust of the rod 6 entering the body 2; at the end of the body 2, closed previously by the bottom 5, there remains an opening 8 for the passage of the rod 6.
  • the bottom 5' uncoupled from the body 2 acts as a plunger that can slide within the body 2 under the thrust of the rod 6 in order to dispense the product P from the outlet 3 once the film 4 has been removed.
  • the body 2 and the bottom 5 are formed monolithically together.
  • the means 7 for full and temporary coupling are constituted by a ring 9 for joining the perimeter of the bottom 5 to the side walls of the body 2, along which there are portions that can tear under the thrust of the rod 6, such as for example prefracture lines, prescoring lines, or the like.
  • the means 7 for full and temporary coupling can comprise a plurality of breakable bridges, whose opposite ends are schematically shown in the figure associated respectively with the bottom 5 and with the walls of the body 2.
  • Mutually complementary coupling means are formed between an end 6a of the rod 6 and the face of the bottom 5 that is directed toward the outside of the body 2 and are constituted by respective protruding or male elements
  • the end 6a of the rod 6 is constituted by a contoured head that is larger than the stem of said rod and can be inserted in a complementary containment cup 18 that protrudes from the face of the bottom 5 that is directed toward the outside of the body 2.
  • the tooth 14 can flex elastically toward the inside of the body 2 in order to allow the insertion of the uncoupled bottom 5' in said body under the insertion thrust of the rod 6.
  • the bottom 5 comprises a surface for abutment against the tooth 14 that is constituted by an annular portion 15 of its face that is directed toward the outside of the body 2.
  • the bottom 5 further comprises lateral fins 16 for forming a seal with the internal walls of the body 2 whose diameter is on average greater than, or equal to, the inside diameter of said body so as to generate friction with it.
  • the bottom 5 is constituted by a substantially cylindrical element, which comprises a longitudinal portion whose outside diameter gradually increases toward the outward face of the body 2; the lateral surface of said longitudinal portion is suitable to form the fins 16 and the base surface of said longitudinal portion is suitable to form the abutment surface 15.
  • sealing means such as a band 17 that is perimetrically associated with the rim of the body 2 at the bottom 5.
  • the film 4 is made to adhere to the perimetric edge of the outlet 3 by gluing or thermal bonding.
  • the cannula 1 is sold ready for use in packages that contain one or more bodies 2, which are already filled with the product P and whose opposite ends are respectively closed by the film 4 and by the bottom 5, and a single rod 6 that can be used with the various bodies 2.
  • the film 4 is removed, thus opening the outlet 3, the sealing band 17, if any, is eliminated, and the end 6a of the rod 6 is coupled to the bottom 5.
  • the fins 16 slide in contact and hermetically against the internal walls of the body 2, avoiding losses of the product P through the opening 5.
  • the outlet 3 is used, during the packaging of the cannula 1, to fill the body 2 with the product P; after this, the film 4, advantageously made of aluminum, is heat-sealed or glued to the perimetric rim of the outlet 3. In practice it has been found that the described invention achieves the intended aim and object.
  • the cannula according to the invention is in fact constructively and structurally simpler than known ones and allows to further limit waste of materials and to contain production times and costs.
  • the cylindrical body of the cannula according to the invention is in fact formed monolithically with the closure bottom, which performs the dual function of plug and pusher plunger; this allows to eliminate one of the two molds for forming the cylindrical body and the plunger of known cannulas, the additional operations for their assembly, and one of the two plugs for closing the cylindrical bodies already packaged with the product.

Abstract

A cannula for dispensing fluid products, particularly medicinal pastes, ointments and creams or the like, comprising an internally hollow cylindrical body (2) that contains a fluid product (P), provided at one end with an outlet (3) for product dispensing, which is associated with a detachable closure (4) and with a closure bottom (5) at the opposite end, a temporary coupling (7) for the bottom (5) to the body (2), and a push rod (6) that is detachably to associable with the bottom (5), the temporary coupling (7) being suitable to release the bottom (5) under thrust of the rod (6) entering the body (2) and the uncoupled bottom (5') being suitable to act as a plunger that can slide within the body (2) to dispense the product (P) from the outlet (3).

Description

CANNULA FOR DISPENSING VISCOUS PRODUCTS , PARTICULARLY MEDICINAL PASTES , OINTMENTS AND CREAMS
Technical Field
The present invention relates to a cannula for dispensing fluid products, particularly medicinal pastes, ointments and creams or the like. Background Art
Cannulas for dispensing medicinal fluid products are known which are used in particular for vaginal and anal applications and are generally sold in packages together with tubes or bottles that contain one of these products. Known cannulas are constituted by a cylinder that is adapted to contain the product and inside which a plunger can slide, said plunger being rigidly coupled to the end of a push rod.
The cylinder has an open end that can be coupled to the outlet of the tube, in order to introduce in said cylinder the amount of product to be applied and through which the introduced product is dispensed.
The opposite end of the cylinder is closed by a bottom provided with a hole in which the push rod is inserted slidingly, acting as an element for stopping the plunger in order to prevent its extraction.
The product introduced in the cannula is dispensed by acting on the push rod in the direction in which the plunger slides toward the open end of the cylinder.
These known cannulas have drawbacks, including the fact that they are structurally and constructively very complicated and that since they are of the single-use type for hygienic reasons and require a push rod for each cylinder, they entail a considerable waste of materials.
To obviate these drawbacks, cannulas are known which are constituted by a cylinder, in which the opposite ends are open and inside which a plunger is inserted slidingly, and by a push rod, which is separate from the plunger and can be coupled detachably thereto. At the opposite ends of the cylinder there are abutment undercuts or shoulders, which are adapted to stop the sliding of the plunger, preventing it from sliding out under the action of the push rod.
These last cannulas can be sold in packages that contain a single push rod, a plurality of empty single-use cylinders to be used for the various applications, and one or more tubes of product.
In this case, one of the two ends of the cylinders can be coupled to the outlet of the tube in order to introduce the product in the cylinders, while the opposite end acts as a passage for the push rod.
As an alternative, these cannulas can be sold in packages that contain a single push rod and a plurality of cylinders that are already filled with the product to be applied and are provided, at their two opposite ends, with closure plugs that are removed at the time of use.
These last known cannulas have allowed to contain the consumption of materials: the same push rod can in fact be used with a plurality of cylinders. However, even these last known cannulas are not free from drawbacks, including the fact that they are constructively very complicated and have very high costs and long production times.
The cylinders and plungers are in fact usually formed by molding polymeric materials in two parts that are mutually separate and are then assembled; this entails designing and manufacturing two different molds and laborious assembly operations, which have a negative effect on the production times and costs of the cannulas.
If the cylinders are sold already filled with the product to be applied, it is also necessary to use, for each cylinder, two plugs to be applied to its opposite open ends, with a consequent costly waste of materials. Disclosure of the Invention
The aim of the present invention is to eliminate the drawbacks noted above of known cannulas, by providing a cannula for dispensing fluid products, particularly medicinal pastes, ointments and creams or the like, that is structurally and constructively simpler, does not require additional assembly operations, allows to further contain production times and costs and to limit the waste of materials.
Within this aim, an object of the present invention is to provide a structure that is simple, relatively easy to provide in practice, safe in use, effective in operation, and has a relatively low cost.
This aim and this and other objects that will become better apparent hereinafter are achieved by the present cannula for dispensing fluid products, particularly medicinal pastes, ointments and creams or the like, which comprises an internally hollow cylindrical body that contains a fluid product and is provided at one end with an outlet for dispensing said product, which is associated with detachable closure means, and has a closure bottom at the opposite end, characterized in that it comprises means for the full and temporary coupling of said bottom to said body and a push rod that is detachably associable with said bottom, said full and temporary coupling means being suitable to release said bottom under the thrust of said rod entering said body and the uncoupled bottom being suitable to act as a plunger that can slide within said body in order to dispense the product from said outlet. ^
Brief description of the Drawings Further characteristics and advantages of the present invention will become better apparent from the following detailed description of a preferred but not exclusive embodiment of a cannula for dispensing fluid products, particularly medicinal pastes, ointments and creams or the like, illustrated by way of non-limitative example in the accompanying drawings, wherein:
Figure 1 is a front view of the cylindrical body of the cannula according to the invention;
Figure 2 is a front view of the push rod of the cannula according to the invention; Figure 3 is a longitudinal sectional view of the body of Figure 1; Figure 4 is a longitudinal sectional view of the push rod of Figure 2;
Figure 5 is an enlarged-scale longitudinal sectional view of an end of the body of Figure 1;
Figure 6 is an enlarged-scale longitudinal sectional view of the cannula according to the invention during the association of the push rod with the bottom of the body;
Figure 7 is an enlarged-scale longitudinal sectional view of the cannula according to the invention during the dispensing of the product. Ways of carrying out the Invention With reference to the figures, the reference numeral 1 generally designates a cannula for dispensing fluid products P, particularly medicinal pastes, ointments and creams or the like for vaginal or anal applications.
The cannula 1 comprises a cylindrical body 2, which is internally hollow and contains a product P and is provided, at its opposite ends, respectively with an outlet 3 for dispensing the product P, which is associated with removable closure means such as, for example, a film 4 that can be removed by tearing, and with a closure bottom 5.
The cannula 1 further comprises a push rod 6 that is detachably associable with the bottom 5. The bottom 5 is rigidly coupled to the body 2 by way of full and temporary coupling means 7, which are suitable to release it under the thrust of the rod 6 entering the body 2; at the end of the body 2, closed previously by the bottom 5, there remains an opening 8 for the passage of the rod 6.
The bottom 5' uncoupled from the body 2 acts as a plunger that can slide within the body 2 under the thrust of the rod 6 in order to dispense the product P from the outlet 3 once the film 4 has been removed.
The body 2 and the bottom 5 are formed monolithically together.
The means 7 for full and temporary coupling are constituted by a ring 9 for joining the perimeter of the bottom 5 to the side walls of the body 2, along which there are portions that can tear under the thrust of the rod 6, such as for example prefracture lines, prescoring lines, or the like.
Moreover, the means 7 for full and temporary coupling can comprise a plurality of breakable bridges, whose opposite ends are schematically shown in the figure associated respectively with the bottom 5 and with the walls of the body 2.
Mutually complementary coupling means are formed between an end 6a of the rod 6 and the face of the bottom 5 that is directed toward the outside of the body 2 and are constituted by respective protruding or male elements
10 and 11, which can be inserted in complementary recesses or female elements 12 and 13.
Advantageously, the end 6a of the rod 6 is constituted by a contoured head that is larger than the stem of said rod and can be inserted in a complementary containment cup 18 that protrudes from the face of the bottom 5 that is directed toward the outside of the body 2. Proximate to the opening 8 there are means for stopping the sliding of the uncoupled bottom 5', which are suitable to prevent its extraction from the body 2 and are constituted by a tooth 14 that is formed so as to protrude centripetally on at least one perimetric arc of the internal walls of said body.
The tooth 14 can flex elastically toward the inside of the body 2 in order to allow the insertion of the uncoupled bottom 5' in said body under the insertion thrust of the rod 6.
Likewise, the bottom 5 comprises a surface for abutment against the tooth 14 that is constituted by an annular portion 15 of its face that is directed toward the outside of the body 2. The bottom 5 further comprises lateral fins 16 for forming a seal with the internal walls of the body 2 whose diameter is on average greater than, or equal to, the inside diameter of said body so as to generate friction with it.
In the illustrated embodiment, the bottom 5 is constituted by a substantially cylindrical element, which comprises a longitudinal portion whose outside diameter gradually increases toward the outward face of the body 2; the lateral surface of said longitudinal portion is suitable to form the fins 16 and the base surface of said longitudinal portion is suitable to form the abutment surface 15.
Conveniently, there are removable sealing means, such as a band 17 that is perimetrically associated with the rim of the body 2 at the bottom 5.
The film 4 is made to adhere to the perimetric edge of the outlet 3 by gluing or thermal bonding.
The operation of the device according to the invention is as follows: the cannula 1 is sold ready for use in packages that contain one or more bodies 2, which are already filled with the product P and whose opposite ends are respectively closed by the film 4 and by the bottom 5, and a single rod 6 that can be used with the various bodies 2.
Upon use, the film 4 is removed, thus opening the outlet 3, the sealing band 17, if any, is eliminated, and the end 6a of the rod 6 is coupled to the bottom 5.
Then, by acting on the rod 6, thrust is applied to the bottom 5 in the direction for insertion into the body 2 until the means 7 for full and temporary coupling break and the bottom 5' thus disconnected is pushed so that it moves past the tooth 14 in order to enter the portion of the body 2 that contains the product P.
The tooth 14, after flexing toward the inside of the body 2 to allow the insertion of the uncoupled bottom 5', assumes its extended configuration again in order to act as a stop element for the uncoupled bottom 5' and prevent its extraction from the body 2. The opening 8, freed by the bottom 5, acts as a passage for the rod 6, while the uncoupled bottom 5' acts as a pusher plunger that can slide, under the action of the rod 6, within the body 2 in order to dispense the product P from the outlet 3.
The fins 16 slide in contact and hermetically against the internal walls of the body 2, avoiding losses of the product P through the opening 5. It should be noted that the outlet 3 is used, during the packaging of the cannula 1, to fill the body 2 with the product P; after this, the film 4, advantageously made of aluminum, is heat-sealed or glued to the perimetric rim of the outlet 3. In practice it has been found that the described invention achieves the intended aim and object.
The cannula according to the invention is in fact constructively and structurally simpler than known ones and allows to further limit waste of materials and to contain production times and costs. The cylindrical body of the cannula according to the invention is in fact formed monolithically with the closure bottom, which performs the dual function of plug and pusher plunger; this allows to eliminate one of the two molds for forming the cylindrical body and the plunger of known cannulas, the additional operations for their assembly, and one of the two plugs for closing the cylindrical bodies already packaged with the product.
The invention thus conceived is susceptible of numerous modifications and variations, all of which are within the scope of the appended claims.
All the details may further be replaced with other technically equivalent ones. In practice, the materials used, as well as the shapes and the dimensions, may be any according to requirements without thereby abandoning the scope of the protection of the appended claims.
The disclosures in Italian Patent Application No. MO2002A000221 from which this application claims priority are incorporated herein by reference.

Claims

1. A cannula for dispensing fluid products, particularly medicinal pastes, ointments and creams or the like, comprising an internally hollow cylindrical body (2) that contains a fluid product (P) and is provided at one end with an outlet (3) for dispensing said product, which is associated with detachable closure means (4), and has a closure bottom (5) at the opposite end, characterized in that it comprises means (7) for the full and temporary coupling of said bottom (5) to said body (2) and a push rod (6) that is detachably associable with said bottom (5), said full and temporary coupling means (7) being adapted to release said bottom (5) under the thrust of said rod (6) entering said body (2) and the uncoupled bottom (5') being adapted to act as a plunger that can slide within said body (2) in order to dispense the product (P) from said outlet (3).
2. The cannula according to claim 1, characterized in that said body (2) and said bottom (5) are formed monolithically together.
3. The cannula according to one or more of the preceding claims, characterized in that said means (7) for full and temporary coupling comprise a ring (9) for connecting said bottom (5) to the walls of said body (2) and along which portions that can break under said thrust of the rod (6) are provided.
4. The cannula according to one or more of the preceding claims, characterized in that said breakable portions comprise prefracture lines, prescoring lines, or the like.
5. The cannula according to one or more of the preceding claims, characterized in that said means (7) for full and temporary coupling comprise a plurality of breakable bridges, whose opposite ends are respectively associated with said bottom (5) and with the walls of said body
(2).
6. The cannula according to one or more of the preceding claims, characterized in that it comprises coupling means (10, 11, 12, 13) which are formed, so as to be shaped complementary to each other, at one end of said rod (6) and on the face of said bottom (5) that is directed toward the outside of said body (2).
7. The cannula according to one or more of the preceding claims, characterized in that said coupling means comprise at least one protruding element (10, 11) that is formed on said end of the rod (6), on said face of the bottom or on both, and at least one complementarily shaped hollow (12, 13) that is formed respectively in said face of the bottom (5) and in said end of the rod (6).
8. The cannula according to one or ' more of the preceding claims, characterized in that said coupling means comprise a contoured head (6a) that is formed at said end of the rod (6) and a complementary cup (8) for containing the head (6a) that protrudes from said face of the bottom (5) or vice versa.
9. The cannula according to one or more of the preceding claims, characterized in that it comprises means (14) for retaining the sliding of the uncoupled bottom (5'), which are formed on the internal walls of said body (2) and are suitable to prevent the extraction of the uncoupled bottom (5') from the body (2).
10. The cannula according to one or more of the preceding claims, characterized in that said retention means (14) are formed proximate to said opposite end of the body (2).
11. The cannula according to one or more of the preceding claims, characterized in that said retention means comprise a tooth (14) that is formed so as to protrude centripetally on at least one arc of said internal walls (2).
12. The cannula according to one or more of the preceding claims, characterized in that said bottom (5) comprises a surface (15) for abutment with said retention means (14).
13. The cannula according to one or more of the preceding claims, characterized in that said abutment surface is constituted by an annular portion (15) of said face of the bottom (5) that is directed toward the outside of the body (2).
14. The cannula according to one or more of the preceding claims, characterized in that said bottom (5) comprises lateral fins (16) for forming a seal against the internal walls of said body (2), the diameter of said fins (16) being greater than, or equal to, the inside diameter of the body (2).
15. The cannula according to one or more of the preceding claims, characterized in that said bottom (5) is constituted by a substantially cylindrical element that comprises a longitudinal portion whose outside diameter gradually increases toward said face that is directed toward the outside of the body (2), the lateral surface of said longitudinal portion being suitable to form said fins (16) and the base surface of said longitudinal portion being suitable to form said abutment surface (15).
16. The cannula according to one or more of the preceding claims, characterized in that it comprises detachable sealing means (17) that are associated with said opposite end of the body (2).
17. The cannula according to one or more of the preceding claims, characterized in that said sealing means comprise a band (17) that is perimetrically associated with the rim of said opposite end of the body (2).
18. The cannula according to one or more of the preceding claims, characterized in that said detachable closure means are constituted by a film (4) that can be removed by tearing and is made to adhere to the perimetric rim of said outlet (3).
PCT/EP2003/007878 2002-08-06 2003-07-18 Cannula for dispensing viscous products, particularly medicinal pastes, ointments and creams WO2004014476A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2004526744A JP2005534434A (en) 2002-08-06 2003-07-18 Cannulas for dispensing viscous products, especially medicinal pasta, ointments and creams
EP03784027A EP1526890A1 (en) 2002-08-06 2003-07-18 Cannula for dispensing viscous products, particularly medicinal pastes, ointments and creams
AU2003258527A AU2003258527A1 (en) 2002-08-06 2003-07-18 Cannula for dispensing viscous products, particularly medicinal pastes, ointments and creams
BRPI0313053A BRPI0313053A2 (en) 2002-08-06 2003-07-18 cannula for dispensing fluid products

Applications Claiming Priority (2)

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ITMO2002A000221 2002-08-06
IT000221A ITMO20020221A1 (en) 2002-08-06 2002-08-06 CANNULA FOR THE DISPENSING OF FLUID PRODUCTS, PARTICULARLY POMATED, MEDICINAL CREAMS AND PASTA OR SIMILAR.

Publications (1)

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WO2004014476A1 true WO2004014476A1 (en) 2004-02-19

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JP (1) JP2005534434A (en)
AU (1) AU2003258527A1 (en)
BR (1) BRPI0313053A2 (en)
IT (1) ITMO20020221A1 (en)
WO (1) WO2004014476A1 (en)

Cited By (8)

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WO2007118908A1 (en) * 2006-04-19 2007-10-25 Novo Nordisk A/S A fluid infusion system, a method of assembling such system and drug reservoir for use in the system
WO2010089651A2 (en) 2009-02-09 2010-08-12 Lameplast S.P.A. Cannula for dispensing fluid products, particularly for vaginal and rectal applications
WO2010089653A1 (en) 2009-02-09 2010-08-12 Lameplast S.P.A. Cannula for dispensing fluid products, particularly for vaginal and rectal applications
WO2011073307A1 (en) * 2009-12-18 2011-06-23 Sanofi-Aventis Deutschland Gmbh Piston for a cartridge and piston rod for a drug delivery device
US8551045B2 (en) 2006-04-19 2013-10-08 Novo Nordisk A/S Fluid infusion system, a method of assembling such system and drug reservoir for use in the system
CN104958828A (en) * 2015-06-16 2015-10-07 王才丰 Gynecology administration device
EP2987560A1 (en) * 2014-08-21 2016-02-24 Sulzer Mixpac AG Apparatus for dispensing a medium and method for front filing the apparatus
US10640276B2 (en) 2017-06-12 2020-05-05 Bio-Techne Corporation Dual chamber storage device

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EP0099457A2 (en) * 1982-07-23 1984-02-01 Akzo GmbH Cartridge for dispensing a metered quantity of a paste or the like
EP0205085A1 (en) * 1985-06-13 1986-12-17 Ab Leo Disposable applicator
EP0259599A2 (en) * 1986-09-02 1988-03-16 Sealright Co., Inc. Breakaway closure for dispenser
US5531703A (en) * 1992-04-28 1996-07-02 Schering-Plough Healthcare Products, Inc. Applicator for semisolid medications
US5788677A (en) * 1995-08-22 1998-08-04 Botich; Michael J. Pre-filled retractable needle injection ampoules
EP1066852A1 (en) * 1999-07-05 2001-01-10 INGE S.p.A. Cannula for medicinal ointments.

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EP0099457A2 (en) * 1982-07-23 1984-02-01 Akzo GmbH Cartridge for dispensing a metered quantity of a paste or the like
EP0205085A1 (en) * 1985-06-13 1986-12-17 Ab Leo Disposable applicator
EP0259599A2 (en) * 1986-09-02 1988-03-16 Sealright Co., Inc. Breakaway closure for dispenser
US5531703A (en) * 1992-04-28 1996-07-02 Schering-Plough Healthcare Products, Inc. Applicator for semisolid medications
US5788677A (en) * 1995-08-22 1998-08-04 Botich; Michael J. Pre-filled retractable needle injection ampoules
EP1066852A1 (en) * 1999-07-05 2001-01-10 INGE S.p.A. Cannula for medicinal ointments.

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8118781B2 (en) 2006-04-19 2012-02-21 Novo Nordisk A/S Fluid infusion system, a method of assembling such system and drug reservoir for use in the system
WO2007118908A1 (en) * 2006-04-19 2007-10-25 Novo Nordisk A/S A fluid infusion system, a method of assembling such system and drug reservoir for use in the system
US8551045B2 (en) 2006-04-19 2013-10-08 Novo Nordisk A/S Fluid infusion system, a method of assembling such system and drug reservoir for use in the system
US9095690B2 (en) * 2009-02-09 2015-08-04 Lameplast S.P.A. Cannula for dispensing fluid products, particularly for vaginal and rectal applications
WO2010089653A1 (en) 2009-02-09 2010-08-12 Lameplast S.P.A. Cannula for dispensing fluid products, particularly for vaginal and rectal applications
CN102307615A (en) * 2009-02-09 2012-01-04 兰姆普拉斯特股份公司 Cannula for dispensing fluid products, particularly for vaginal and rectal applications
US20110282304A1 (en) * 2009-02-09 2011-11-17 Antonio Fontana Cannula for dispensing fluid products, particularly for vaginal and rectal applications
WO2010089651A2 (en) 2009-02-09 2010-08-12 Lameplast S.P.A. Cannula for dispensing fluid products, particularly for vaginal and rectal applications
US8517996B2 (en) 2009-02-09 2013-08-27 Lameplast S.P.A. Cannula for dispensing fluid products, particularly for vaginal and rectal applications
AU2010332862C1 (en) * 2009-12-18 2015-12-24 Sanofi-Aventis Deutschland Gmbh Piston for a cartridge and piston rod for a drug delivery device
CN102781499A (en) * 2009-12-18 2012-11-14 赛诺菲-安万特德国有限公司 Piston for a cartridge and piston rod for a drug delivery device
WO2011073307A1 (en) * 2009-12-18 2011-06-23 Sanofi-Aventis Deutschland Gmbh Piston for a cartridge and piston rod for a drug delivery device
US9370624B2 (en) 2009-12-18 2016-06-21 Sanofi-Aventis Deutschland Gmbh Assembly for use in a drug delivery device
EP2987560A1 (en) * 2014-08-21 2016-02-24 Sulzer Mixpac AG Apparatus for dispensing a medium and method for front filing the apparatus
WO2016026940A1 (en) * 2014-08-21 2016-02-25 Sulzer Mixpac Ag Apparatus for dispensing a medium and method for front filling the apparatus
CN106573270A (en) * 2014-08-21 2017-04-19 苏舍米克斯帕克有限公司 Apparatus for dispensing a medium and method for front filling the apparatus
US10350632B2 (en) 2014-08-21 2019-07-16 Sulzer Mixpac Ag Apparatus for dispensing a medium and method for front filling the apparatus
CN106573270B (en) * 2014-08-21 2020-05-05 苏舍米克斯帕克有限公司 Device for dispensing a medium and method for filling the device from the front
CN104958828A (en) * 2015-06-16 2015-10-07 王才丰 Gynecology administration device
US10640276B2 (en) 2017-06-12 2020-05-05 Bio-Techne Corporation Dual chamber storage device
US10640275B2 (en) 2017-06-12 2020-05-05 Bio-Techne Corportion Dual chamber storage device

Also Published As

Publication number Publication date
JP2005534434A (en) 2005-11-17
ITMO20020221A0 (en) 2002-08-06
AU2003258527A1 (en) 2004-02-25
ITMO20020221A1 (en) 2004-02-07
BRPI0313053A2 (en) 2016-11-08
EP1526890A1 (en) 2005-05-04

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