EP2247257B1 - Teat needle with protective end wall - Google Patents

Teat needle with protective end wall Download PDF

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Publication number
EP2247257B1
EP2247257B1 EP09707392A EP09707392A EP2247257B1 EP 2247257 B1 EP2247257 B1 EP 2247257B1 EP 09707392 A EP09707392 A EP 09707392A EP 09707392 A EP09707392 A EP 09707392A EP 2247257 B1 EP2247257 B1 EP 2247257B1
Authority
EP
European Patent Office
Prior art keywords
teat
needle
needle shaft
canal
end wall
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.)
Not-in-force
Application number
EP09707392A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2247257A1 (en
Inventor
Peter-Jan Van Der Molen
Louis Van Vessem
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Helvoet Rubber and Plastic Technologies BV
Original Assignee
Helvoet Rubber and Plastic Technologies BV
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 Helvoet Rubber and Plastic Technologies BV filed Critical Helvoet Rubber and Plastic Technologies BV
Publication of EP2247257A1 publication Critical patent/EP2247257A1/en
Application granted granted Critical
Publication of EP2247257B1 publication Critical patent/EP2247257B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61D—VETERINARY INSTRUMENTS, IMPLEMENTS, TOOLS, OR METHODS
    • A61D1/00—Surgical instruments for veterinary use
    • A61D1/02—Trocars or cannulas for teats; Vaccination appliances

Definitions

  • the invention relates to a teat needle for administering an injection medium into a teat canal in the udder of a milking animal such as a cow or goat.
  • a similar teat needle is known from BE-1005479 , for example.
  • the teat needle has a thin tapering shaft that slides into the teat canal of the udder.
  • the length of the needle shaft is such that when it is fully inserted into the teat canal, a medicine or salve can be injected directly into the udder.
  • the teat needle is connected to a container that is filled with a specific quantity of the medicine or salve.
  • the teat needle delimits a through flow canal with a forward facing discharge opening.
  • the disadvantage of this is that ease of use and the animal-friendliness of the teat needle leaves to be desired. It may occur that when the needle shaft is inserted into the teat canal it meets a certain resistance. It may also be the case that the teat canal can suffer injury when the needle shaft is inserted. This happens especially if during manufacture membranes or burrs are left on the needle shaft on, for example, the discharge opening. There is a risk that these membranes or burrs will cut into the flesh internally. Wounds of this sort are painful for the animal and can lead to serious infection and to contamination of the milk that is withdrawn from the teat after treatment with the teat needle. Wounds of this sort also lead to financial loss for the farmer. In addition the discharge opening may get blocked during insertion into the teat canal. The needle shaft with its forward facing discharge opening scrapes free, as it were, all types of material that it encounters on the wall of the teat canal, and the material attempts to find a way into the interior of the flow canal via the discharge opening.
  • a teat needle is known from GB-914,131 .
  • This teat needle is designed for applying antibiotics to an infected and damaged teat canal, and if required can remain in the teat canal if this is deemed necessary for healing.
  • the needle shaft has both a forward facing discharge opening and a lateral facing discharge opening.
  • the lateral facing discharge opening reduces the problem of blockage, the forward facing discharge opening still has the above-mentioned disadvantages.
  • US 4,236,520 discloses a flexible fluid drain or injection tube for insertion into a teat of an animal's udder.
  • the injection tube comprises an elongated tubular body with an inlet opening at a bottom end part and a closed opposite end at an upper end part. The closed end is formed by a solid, rounded, tapered tip.
  • Inside the tubular body an axial bore is present which connects to the inlet opening.
  • two elongated slot-shaped outlet openings are present which connect to the bore. Those outlet openings are provided at axially different height positions along the tubular body and open out in opposite sideways directions.
  • the aim of the invention described below is to remove at least partially the above-mentioned disadvantages or to provide a usable alternative.
  • the aim of the invention is to create a user-friendly teat needle that is relatively cheap and simple to manufacture and which does not easily lead to wounding of the teat canal.
  • the teat needle comprises an elongated needle shaft with a distal end piece that slides into the teat canal.
  • a flow canal extends, which in the distal end piece connects to one or more laterally placed discharge openings.
  • a protective end wall is provided which at least partially closes off the flow canal in the forward direction.
  • This protective end wall is located here in the extension of the flow canal and thereby at least partially covers the distal end of the flow canal in the axial direction.
  • the protective end wall in combination with one or more laterally positioned discharge openings makes it advantageously possible during manufacture of the needle shaft as an injection moulding product to work with connecting mould cores within the outer circumference of the needle shaft.
  • one or more mould cores can be connected for the forming of the one or more outlet openings.
  • any membranes or burrs that remain after manufacture then advantageously come to lie on these transitions over the wall thickness of the needle shaft within the outer circumference of the needle shaft. There the membranes and burrs cannot, or can hardly, lead to injury to the animal on insertion into its teat canal.
  • the one or more laterally positioned discharge openings extend in an axial direction next to cut outs in the protective end wall.
  • the injection medium will not only be injected out of the needle shaft laterally, but also by being slightly directed forwards, flow into the teat.
  • this design makes it possible for the above mentioned mould cores to approach each other in an axial direction, during positioning in a mould cavity corresponding to the needle shaft, until the intended end position is reached, in which the mould cores partially come to rest against each other laterally at the transition(s) between the flow canals and the discharge opening(s).
  • At least two, in particular three, discharge openings are distributed laterally around the circumference of the needle shaft.
  • the protective end wall is integrally formed on the distal end section of the needle shaft.
  • the needle shaft can be manufactured from various materials, such as metal or plastic.
  • the needle shaft is preferably manufactured from plastic in an injection moulding process. If required the needle shaft can be assembled from various materials that can be prepared, for example, in a dual-component injection moulding process in one step.
  • the invention also relates to a method for the manufacture of the teat needle as well as the use of the teat needle.
  • the syringe 1 comprises a syringe body 2 with a cylindrical section 3 with an axial direction on which a distal end 3a and a proximal end 3b can be distinguished.
  • the syringe 1 comprises a piston element 5 with a piston rod 6 and a piston 7.
  • the free end of the piston rod 6 ends in a thumb support 8 and also has a cylindrical wall section.
  • the piston 7 is an integral part of the piston element 5 and is provided with two elastic deformable ring-shaped wall sections 11.
  • the piston 7 is dimensioned in such a way that in an assembled state it presses with its wall sections 11 to form a seal against the internal circumference of the cylindrical part 3.
  • the radial external dimensions of the piston 7 are basically the same as the radial internal dimensions of the cylindrical part 3.
  • the syringe 1 comprises an integrally formed assembly of a teat needle 12 that is connected to a break element 14 by means of weakened wall sections 13 (see also figure 6 and 7 ).
  • This assembly is designed to be broken during assembling, with the break element 14 and the teat needle 12 being connected successively in their respective end positions with the syringe body 2 (see figure 2 ).
  • break element 14 After assembling the break element 14 is designed to serve as a piston seal together with compressible cams provided on the piston rod 6.
  • the teat needle 12 is destined to form a nozzle on the distal end 3a and must be inserted into the syringe body 2 from the proximal end 3b. At the location of the distal end 3a the teat needle 12 can be firmly attached to the syringe body 2. In the embodiment shown this occurs by means of a snap connection with complimentary inter-gripping wall sections, in particular, a tongue groove connection (see figure 2 ).
  • the teat needle 12 comprises an elongated needle shaft 20 that is implemented here as a conical tapering distal end piece.
  • a conical tapering flow canal 21 extends in an axial direction.
  • the flow canal 21 discharges into three laterally positioned discharge openings 22 cut-out in the shaft wall that are symmetrically positioned around the circumference.
  • the tip of the teat needle 12 is provided with a protective end wall 24.
  • the protective wall 24 lies in the prolongation of the flow canal 21 and fully covers in the axial direction.
  • the protective wall 24 is integrally shaped with the needle shaft 20.
  • the discharge openings 22 extend in the axial direction into cut-outs 26 positioned sideways of the protective wall 24. In this way there is formed as it were a cylindrical core section 27 that is connected to the rest of the needle shaft 20 by ribs 28.
  • Both the core section 27 and the ribs 28 of the protective wall 24 are constructed with a radius, by which a rounded tip is obtained.
  • the teat needle 12 is made from plastic, especially PE, PP and/or TPE. If required parts of the teat needle 12, for example the needle shaft 20, the ribs 28 and the protective wall 24 with the respect to the rest of the teat needle 12 can be made from various materials that can be manufactured for example in a dual-component injection moulding process.
  • This nozzle seal 30 is here formed by a protective cap 31 that is formed integrally on the syringe body 2 by a weakened peripheral wall section 32.
  • the protective cap 31 is manufactured in two parts with the two parts 31a and 31b being connected together by a weakened peripheral wall section 33. The makes it possible to remove only the foremost part 31a, or also the rearmost part 31b. This gives the user the possibility to free up a longer or shorter part of the needle shaft 20 of the teat needle 12 for insertion in a body part.
  • the protective cap 31 of the nozzle seal 30 is constructed in such a way that with its front part 31 it lies sealing against the needle shaft 20 of the teat needle 12.
  • the protective cap 31 and the teat needle 12 are dimensioned in such a way that in the assembled state a small chamber is created between the tip of the teat needle 12 and the protective cap 31.
  • the protective cap 31 is designed with a basically cylindrical cavity or with a cavity that has a smaller cone angle than that of the needle shaft 20. This ensures that in the assembled state on the one hand a small chamber is formed around the tip while on the other hand a sealing takes place between the peripheral wall of the needle shaft 20 and the protective cap 31.
  • the various parts of the syringe can be given various forms and dimensions.
  • another type of tamper evident construction can also be applied to seal and/or close off the distal end in a reliable way.
  • the teat needle integrally onto the syringe body or use a teat needle that can be connected from the outside with the distal end of the syringe.
  • the teat needle freely in combination with another type of syringe or supply unit.
  • the discharge openings can also be provided at a lower level along the needle shaft and vary in number. The protective wall will then be able to spread over the entire tip.
  • a teat needle is provided that can be manufactured easily and cheaply and which lends itself very well to the introduction of an injection medium into the teat of an udder of a milking animal such as cow or goat, for example a salve with antibiotic qualities, or a curable medium that can seal the teat temporarily.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
EP09707392A 2008-02-05 2009-01-22 Teat needle with protective end wall Not-in-force EP2247257B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL2001259A NL2001259C1 (nl) 2008-02-05 2008-02-05 Speennaald met kopse afschermwand.
PCT/NL2009/000011 WO2009099320A1 (en) 2008-02-05 2009-01-22 Teat needle with protective end wall

Publications (2)

Publication Number Publication Date
EP2247257A1 EP2247257A1 (en) 2010-11-10
EP2247257B1 true EP2247257B1 (en) 2012-01-18

Family

ID=40512457

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09707392A Not-in-force EP2247257B1 (en) 2008-02-05 2009-01-22 Teat needle with protective end wall

Country Status (5)

Country Link
EP (1) EP2247257B1 (da)
AT (1) ATE541532T1 (da)
DK (1) DK2247257T3 (da)
NL (1) NL2001259C1 (da)
WO (1) WO2009099320A1 (da)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12171361B2 (en) 2020-12-30 2024-12-24 Sharkninja Operating Llc Hybrid receptacle beverage brewing system
USD1048792S1 (en) 2023-04-12 2024-10-29 Sharkninja Operating Llc Coffee machine
USD1048793S1 (en) 2023-05-02 2024-10-29 Sharkninja Operating Llc Coffee machine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1797339A (en) * 1927-12-10 1931-03-24 Gudmand-Hoyer Johannes Canule for cow teats
GB914131A (en) 1960-07-06 1962-12-28 Willows Francis Ltd Improved dilators
US4236520A (en) 1978-12-04 1980-12-02 Anderson Mark L Fluid drain or injection tube for an animal's udder
DE3363028D1 (en) * 1982-05-26 1986-05-22 Bruhl Wilhelm Haemorrhoid treatment stick
BE1005479A3 (nl) 1991-10-31 1993-08-03 Backer Hubert Nv Sa De Veeartsenijkundig instrument voor de toediening van een geneesmiddel.

Also Published As

Publication number Publication date
EP2247257A1 (en) 2010-11-10
WO2009099320A1 (en) 2009-08-13
ATE541532T1 (de) 2012-02-15
NL2001259C1 (nl) 2009-08-06
DK2247257T3 (da) 2012-05-07

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