EP0525300B1 - Couteau trayeuse - Google Patents

Couteau trayeuse Download PDF

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Publication number
EP0525300B1
EP0525300B1 EP92105681A EP92105681A EP0525300B1 EP 0525300 B1 EP0525300 B1 EP 0525300B1 EP 92105681 A EP92105681 A EP 92105681A EP 92105681 A EP92105681 A EP 92105681A EP 0525300 B1 EP0525300 B1 EP 0525300B1
Authority
EP
European Patent Office
Prior art keywords
knife
udder
sheath
angled
protractor
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.)
Expired - Lifetime
Application number
EP92105681A
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German (de)
English (en)
Other versions
EP0525300A3 (en
EP0525300A2 (fr
Inventor
Maximilian J. Dr. Med. Vet. Medl
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CA 2074312 priority Critical patent/CA2074312A1/fr
Publication of EP0525300A2 publication Critical patent/EP0525300A2/fr
Publication of EP0525300A3 publication Critical patent/EP0525300A3/de
Priority to US08/193,604 priority patent/US5360433A/en
Application granted granted Critical
Publication of EP0525300B1 publication Critical patent/EP0525300B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61D—VETERINARY INSTRUMENTS, IMPLEMENTS, TOOLS, OR METHODS
    • A61D1/00—Surgical instruments for veterinary use

Definitions

  • the invention relates to a teat knife according to the first part of claim 1.
  • a knife is known as a "Danish double knife”.
  • the teat knife Because of the cut from top to bottom, the teat knife has to be designed in such a way that it can be inserted into the teat canal with a protected cutting blade and only swung out of the knife sheath there.
  • the well-known "Danish double knife” works according to this principle. This is handled in such a way that the pivoting angle of the cutting blade and so that the depth of cut is set using a screw mechanism. The cutting blade is then swung back again and the knife is inserted into the streak canal. There, the cutting blade is swiveled out to the previously set swivel angle so that the cutting process can be carried out.
  • this known knife has the disadvantage that the depth of cut can no longer be changed during the cutting.
  • the depth of cut inevitably remains essentially constant over the entire length of the cut.
  • the invention is based on the object of specifying a teat knife which, when used, makes it possible to change the depth of cut in a very simple manner, in particular during the cutting process.
  • the teat knife should be designed so that the cutting part is easily removable, for. B. in the case of renewing a blunt cutting edge or thorough cleaning of the teat knife.
  • a teat knife of the type mentioned at the outset which is characterized in that the knife is designed as a protractor with a cutting leg and an actuating leg, and in that a spring which presses the protractor into its rest position is provided.
  • the teat knife according to the invention enables controlled cutting in the teat canal.
  • the depth of cut can be changed at any time by applying different pressure the actuating leg of the protractor of the teat knife is changed and thus individually adapted to the treatment of the scarring to be cut. This avoids unnecessarily large depths of cut as well as unnecessary cutting lengths. If necessary, several short cuts can be made in succession even in one cutting direction. Since the start and end of the cutting process and the depth of cut are controlled by means of a lever effect by means of a corresponding finger pressure on the actuating leg of the protractor, the cuts in the line canal can be made very deliberately without injuring him at the base.
  • the teat knife according to the invention is preferably equipped with a variable stop device which limits the pivoting angle of the protractor. This limits the depth of cut to a maximum size and prevents accidental cuts being made too deeply. This gives the user of the teat knife a high level of safety when handling and ensures extensive protection of the animal to be treated.
  • the stop device consists of a cylinder which can be rotated axially in the base body and which has stop slots of different lengths.
  • the teat knife has a locking device, with the aid of which the stop device can be locked in different positions within its range of rotation according to the position of the stop slots. This makes it easy to find and fix the desired level of maximum depth of cut.
  • the actuating leg of the protractor preferably has a graduation that correlates with the pivoting angle of the protractor. This embodiment makes it possible to read the depth of cut at any time and to change it if necessary.
  • the teat knife is designed so that the protractor can be easily removed.
  • the knife pivot axis is formed on one side of the protractor and the knife sheath on the associated side of the knife slot at the height of the knife pivot axis has a radial cutout corresponding to the dimensions of the knife pivot axis for inserting the protractor into the knife sheath and locking means for holding the inserted one Protractor in its rest and working position. Since the locking means are designed so that the lock can be released again, the protractor can be easily removed from the knife sheath at any time. Renewing the protractor and / or cleaning it and the knife sheath are therefore easily possible.
  • the locking means consists on the one hand of the helical spring and on the other hand of an axial recess, which extends from the radial recess essentially in the direction of the longitudinal axis of the knife sheath, and a locking shoulder.
  • This configuration is advantageous because it can be implemented in practice in a simple manner. Due to the pressure of the coil spring on the protractor, its swivel axis is held securely in the corresponding recess and is also prevented from accidentally falling out of the knife sheath by the locking shoulder.
  • the locking shoulder is formed in that an essentially radial locking recess for receiving the knife pivot axis is provided at the associated end of the axial recess substantially in the direction of pressure of the helical spring. This allows the knife swivel axis to be easily hooked into the radial locking recess to lock it.
  • the knife pivot axis can be formed on only one side or on both sides of the protractor. In the latter case, the knife sheath has the aforementioned cutouts on both sides.
  • FIG. 1 shows an axial section of a first embodiment of a teat knife 1.
  • This has a cylindrical base body 2, which is designed as a solid cylinder in its upper section 3 and as a hollow cylinder in its lower section 4.
  • the upper end 3 carries an axially arranged knife sheath 5.
  • the length of the base body 2 corresponds approximately to the width of a human hand and its diameter is approximately 10 to 15 mm, so that it can be handled comfortably and safely.
  • the knife sheath 5 protrudes from the base body 2 with a length of about 25 mm and has a diameter of about 2 to 3 mm, with which it corresponds to the internal volume of a teat canal of an average dairy cow.
  • the radial cross section of the knife sheath 5 is oval or circular in its outer circumference with two flattened circumferential sections lying opposite one another.
  • the front end 6 of the knife sheath 5 is tapered towards the end, so as not to injure the streak canal to be treated when the teat knife 1 is inserted.
  • the knife sheath 5 has on its narrow side an axial knife slot 7 which continues downward over a substantial length section of the base body 2.
  • a cutting leg 8 of an angle knife 9 is arranged in the knife slot 7 of the knife sheath 5.
  • the protractor 9 consists of this cutting leg 8 and an actuating leg 10, both of which are connected to one another on a knife pivot axis 11.
  • the free end of the operating leg 10 is provided with a small pressure plate 12.
  • the protractor 9 is pivotally mounted in the knife slot 7 by means of the knife pivot axis 11.
  • the cutting leg 8 carries a cutting edge 13 which is directed towards the outside of the knife sheath 5.
  • the protractor 9 is preferably mounted in the knife pivot axis 11 by means of a screw, so that the protractor 9 can be replaced by loosening the screw.
  • the base body 2 there is a helical spring 14 in the upper section 3 of the base body 2, where it is designed as a solid cylinder
  • the base body 2 there has a spring bore 15 running obliquely downwards from outside, the axis of which lies in the plane of the knife slot 7.
  • the spring 14 is arranged behind the actuating leg 10 of the protractor 9 and acts on it with a compressive force in the direction of the rest position of the teat knife 1 shown in the figure.
  • a stop device 16 which is essentially cylindrical, is rotatably arranged in the hollow cylindrical subsection 4 of the base body 2.
  • the stop device 16 protrudes with a short axial section from the base body 2 below and carries a knurled wheel 17 there, on which the stop device 16 can be gripped and rotated in the base body 2.
  • the axial length of the stop device 16 in the interior of the base body 2 extends beyond its longitudinal center.
  • the Knife slot 7 in the base body 2 down along an essential length section of the stop device 16.
  • the actuating leg 10 is located just above an upper edge 18 of the stop device 16. This upper edge 18 therefore acts in this position as a stop for the actuating leg 10, whereby pivoting of the cutting leg 8 of the protractor 9 is prevented.
  • the stop device 16 is on its cylinder circumference with several, for. B. provided with three different lengths of radial stop slots 19, the longitudinal direction of which runs parallel to the cylinder axis of the stop device 16.
  • the width of the stop slots 19 corresponds approximately to the width of the knife slot 7 in the base body 2.
  • the stop slots 19 can each be brought into register with the knife slot 7 by rotating the stop device 16 accordingly. If there is no such cover, the actuating leg 10 of the protractor 9 cannot be pressed further into the knife slot 7 from the rest position, as mentioned above.
  • the actuating leg 10 If, however, one of the stop slots 19 of the stop device 16 coincides with the knife slot 7 of the base body 2, it is possible for the actuating leg 10 to be pushed into this stop slot 19 and thus for the cutting leg 8 of the protractor 9 to be pivoted out.
  • the maximum pivoting angle that can be achieved depends on the pivoting depth of the actuating arm 10 into the respective stop slot 19. This pivoting depth is determined by the position of the lower slot end 20 of the stop slot 19. This bottom slot end 20 acts as a stop for the actuating leg 10.
  • the upper edge 18 of the cylindrical stop device 16 can be designed as a stop curve, the depth of cut then being infinitely adjustable.
  • the actuating leg 10 is provided with a graduation 21 which correlates with the pivoting angle of the cutting leg 8 and therefore with the depth of cut to be formed. The reading on the graduation 21 takes place at the point where the actuating leg 10 enters the base body 2.
  • the base body 2 has a locking device.
  • This includes several, e.g. three radial locking bores 22 in the base body 2.
  • the stop device 16 is provided with a blind bore 23 at the same axial height.
  • a detent spring 24 is arranged in this, which presses a detent ball 25 against the respectively set detent bore 22.
  • the diameter of the locking bore 22 is smaller than that of the locking ball 25.
  • a second embodiment of the teat knife 1 is shown. In its functional parts, it corresponds to the structure of the aforementioned first embodiment, except for the connection between the knife sheath 5 and the protractor 9. Therefore, only this connection is explained below.
  • Fig. 2 shows a side view of the teat knife 1, in which the cutting leg 8 of the protractor 9 to the outside is pivoted.
  • the knife pivot axis 11 is anchored in the lower region of the knife sheath 5, as will be described in more detail below.
  • the protractor 9 has a knife pivot axis 11 only on the left-hand side when looking at the cutting edge 13.
  • the protractor 9 is removed from the knife sheath 5.
  • the knife sheath 5 has a radial recess 26 on the corresponding side on which the protractor 9 to be used carries the knife pivot axis 11. This corresponds to the dimensions of the knife pivot axis 11 and permits the insertion of the protractor 9 into the knife sheath 5.
  • the recess 26 is thus only in the axial slot 7 of the knife sheath 5 on the left side of the knife sheath 5.
  • locking means are provided. These consist on the one hand of the helical spring 14 which, according to FIG. 1, presses the protractor 9 used essentially radially outwards, and on the other hand from an axial recess 27 which, according to FIG. 5, continues from the radial end 26 of the inner end 28 thereof extends upwards in the direction of the longitudinal axis of the knife sheath 5 and ends over a locking shoulder 29.
  • the locking shoulder 29 is formed in that at the associated end 30 of the axial recess 27 essentially in the pressure direction of the (only shown in Fig. 1) coil spring 14 an essentially radial locking recess 31 for receiving the Knife pivot axis 11 is provided.
  • the locking shoulder 29 At the transition between the axial recess 27 and the radial locking recess 31, the locking shoulder 29.
  • radial recess 26 extends over a larger peripheral portion ⁇ of the sheath 5, which is shown in Fig. 7 for simplicity with a circular cross-section.
  • the radial recess 26 directly adjoins the knife slot 7 and together with this results in a total recess which extends over a circumferential section ⁇ of the knife sheath 5 of more than 90 degrees.
  • a likewise possible embodiment which is not shown in the drawing, essentially corresponds to the embodiment according to FIGS. 2 to 7.
  • the difference lies in the fact that the knife pivot axis is formed on both sides of the protractor 9 and accordingly, when looking at the knife slot 7, the knife sheath 5 has corresponding recesses 26, 27, 31 on both sides of the knife slot 7.
  • the protractor 9 is preferably made of metal.
  • the stop device 16 is positioned such that by means of the corresponding Ahschlschlitzes 19 the maximum swivel angle of the cutting leg 8 of the protractor 9 and thus its maximum depth of cut is determined. This depth of cut can be checked by means of the graduation 21.
  • the knife sheath 5 is inserted into the teat canal of the teat to be treated.
  • the cutting leg 8 is pivoted out of the knife sheath 5 by pressure on the actuating leg 10.
  • the desired cut is made by pulling the teat knife 1 out of the line duct.
  • the depth of cut can be changed as desired up to the preselected maximum value by different pressure on the actuating leg 10. It is also possible, with the hand holding the teat, to carry out the cut only in a desired section of the line channel or to strengthen the cut, if necessary, by applying counterpressure to the line channel.
  • the second embodiment of the teat knife 1 explained in FIGS. 2 to 7 is used in the same way.
  • this further embodiment offers the additional advantage that the protractor 9 can be easily removed completely from the sheath 5.
  • a radial pressure in the direction of the longitudinal axis of the knife sheath 5 is exerted on the protractor 9 at the level of the knife pivot axis 11 against the pressure of the helical spring 14.
  • the knife pivot axis 11 moves from the radial locking recess 31 into the axial recess 27 and can then be pulled down past the locking shoulder 29 into the axial recess 26. From there, the knife pivot axis 11 and thus the protractor 9 slide easily out of the knife sheath 5.

Landscapes

  • Health & Medical Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Zoology (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Knives (AREA)
  • Surgical Instruments (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Lubricants (AREA)
  • Processing Of Meat And Fish (AREA)

Claims (9)

  1. Couteau pour pis comportant un corps de base (2), une gaine de couteau (5) pouvant être introduite dans le pis et un couteau (9) à angle de pivotement réglable, le couteau étant, dans sa position de repos, effacé à l'intérieur de la gaine, caractérisé en ce que le couteau est réalisé comme un couteau coudé (9) comportant une branche de coupe (8) et une branche de manoeuvre (10), et en ce qu'est prévu un ressort (14) appliquant le couteau coudé (9) dans sa position de repos.
  2. Couteau pour pis selon la revendication 1, caractérisé en ce qu'est prévu un dispositif à butée (16) qui peut être déplacé en vue de délimiter l'angle de pivotement du couteau coudé (9).
  3. Couteau pour pis selon la revendication 2, caractérisé en ce que le dispositif à butée (16) se compose d'un cylindre susceptible de pivoter axialement au sein du corps de base (2) et comportant des rainures d'arrêt (19) de différentes longueurs.
  4. Couteau pour pis selon la revendication 2 ou 3, caractérisé en ce qu'il présente un dispositif d'arrêt (22, 23, 24, 25) à l'aide duquel le dispositif à butée (16) peut être stoppé, à l'intérieur de sa zone de pivotement, dans différentes positions correspondant aux positions des rainures d'arrêt (19).
  5. Couteau pour pis selon l'une des revendications précédentes, caractérisé en ce que la branche de manoeuvre (10) du couteau coudé (9) porte une graduation (21) en corrélation avec l'angle de pivotement du couteau coudé (9).
  6. couteau pour pis selon l'une des revendications précédentes caractérisé en ce que, pour que le couteau coudé (9) soit plus facilement amovible, l'axe de pivotement (11) du couteau est réalisé sur un côté du couteau coudé (9), et en ce que la gaine de couteau (5) présente, du côté d'une fente (7) du couteau et à hauteur de l'axe de pivotement (11) du couteau, un évidement radial (26) correspondant aux dimensions de l'axe de pivotement (11) du couteau, pour l'introduction du couteau coudé (9) dans la gaine de couteau (5), et présente également des moyens de verrouillage pour stopper le couteau coudé une fois positionné, dans la position de repos et de fonctionnement.
  7. Couteau pour pis selon la revendication 6, caractérisé en ce que les moyens de verrouillage se composent d'une part du ressort cylindrique (14), d'autre part d'un évidement axial (27) qui s'étend à partir de l'évidement radial (26), sensiblement en direction de l'axe longitudinal de la gaine de couteau (5), ainsi que d'un épaulement (29) de verrouillage.
  8. Couteau pour pis selon la revendication 7, caractérisé en ce que l'épaulement de verrouillage (29) est formé de telle sorte que sur l'extrémité (30) correspondante de l'évidement axial (27), sensiblement dans la direction de poussée du ressort cylindrique (14), est prévu un évidement de verrouillage (31) sensiblement radial, permettant le logement de l'axe de pivotement (11) du couteau.
  9. Couteau pour pis selon l'une des revendications 6 à 8, caractérisé en ce que l'axe de pivotement du couteau (11) est réalisé sur les deux côtés du compas (9) et que, de manière correspondante, la gaine de couteau (5) présente des évidements (26, 27, 31) sur les deux côtés de la fente (7) du couteau.
EP92105681A 1991-07-25 1992-04-02 Couteau trayeuse Expired - Lifetime EP0525300B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA 2074312 CA2074312A1 (fr) 1991-07-25 1992-07-21 Couteau a teton
US08/193,604 US5360433A (en) 1991-07-25 1994-02-07 Teat knife

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9109210U DE9109210U1 (de) 1991-07-25 1991-07-25 Zitzenmesser
DE9109210U 1991-07-25

Publications (3)

Publication Number Publication Date
EP0525300A2 EP0525300A2 (fr) 1993-02-03
EP0525300A3 EP0525300A3 (en) 1993-06-16
EP0525300B1 true EP0525300B1 (fr) 1995-07-19

Family

ID=6869663

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92105681A Expired - Lifetime EP0525300B1 (fr) 1991-07-25 1992-04-02 Couteau trayeuse

Country Status (4)

Country Link
US (1) US5360433A (fr)
EP (1) EP0525300B1 (fr)
AT (1) ATE125139T1 (fr)
DE (2) DE9109210U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7434316B2 (en) 2006-05-16 2008-10-14 Leatherman Tool Group, Inc. Fixed knife and knife sheath

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001028618A2 (fr) 1999-10-22 2001-04-26 Boston Scientific Corporation Catheter a double ballonnet pour thrombectomie
US6090118A (en) 1998-07-23 2000-07-18 Mcguckin, Jr.; James F. Rotational thrombectomy apparatus and method with standing wave
US8414543B2 (en) 1999-10-22 2013-04-09 Rex Medical, L.P. Rotational thrombectomy wire with blocking device

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE126876C (fr) *
DE494953C (de) * 1930-03-31 Clauss Frederiksen Aufstechapparat fuer ganz oder teilweise verstopfte Kuhzitzen
DE346011C (fr) *
GB698501A (en) * 1950-11-24 1953-10-14 George Johnson An improved veterinary surgical instrument
DE869532C (de) * 1951-07-05 1953-03-05 Walter Pioch Vorrichtung zum Entfernen von Gewaechsen im Milchkanal bei Kuehen
DE925371C (de) * 1952-07-30 1955-03-21 Elith Gerhard Dyekjaer Operationsmesser zur Behandlung der Schwermelkbarkeit
US2676595A (en) * 1953-01-21 1954-04-27 Dyekjaer Elith Gerhard Veterinary surgical knife
US2730101A (en) * 1954-02-23 1956-01-10 Roy D Hoffman Teat bistoury with expansible cutter knives
US2816552A (en) * 1954-06-29 1957-12-17 Roy D Hoffman Teat bistoury with improved cutter blade adjusting means
DE1860698U (de) * 1962-06-22 1962-10-25 H Hauptner Fa Tieraerztliches instrument fuer die strichkanal- und zitzenchirurgie.
BE665788A (fr) * 1965-06-22 1965-10-18
DE2330551A1 (de) * 1973-06-15 1975-01-09 Leveen Harry H Chirurgisches werkzeug
US4672964A (en) * 1986-02-21 1987-06-16 Dee Robert N Scalpel with universally adjustable blade
US4730394A (en) * 1986-12-15 1988-03-15 Richard G. Sonner Folding camp knife
US5116351A (en) * 1989-10-11 1992-05-26 Frassetti Paris R Safety scalpel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7434316B2 (en) 2006-05-16 2008-10-14 Leatherman Tool Group, Inc. Fixed knife and knife sheath

Also Published As

Publication number Publication date
EP0525300A3 (en) 1993-06-16
ATE125139T1 (de) 1995-08-15
DE9109210U1 (de) 1991-09-26
EP0525300A2 (fr) 1993-02-03
DE59202925D1 (de) 1995-08-24
US5360433A (en) 1994-11-01

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