US3703898A - Teat dilator - Google Patents
Teat dilator Download PDFInfo
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- US3703898A US3703898A US58569A US3703898DA US3703898A US 3703898 A US3703898 A US 3703898A US 58569 A US58569 A US 58569A US 3703898D A US3703898D A US 3703898DA US 3703898 A US3703898 A US 3703898A
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- members
- dilator
- frame
- teat
- canal
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Links
- 239000003814 drug Substances 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 13
- 238000003780 insertion Methods 0.000 claims abstract description 10
- 230000037431 insertion Effects 0.000 claims abstract description 10
- 229920003023 plastic Polymers 0.000 claims abstract description 8
- 239000004033 plastic Substances 0.000 claims abstract description 8
- 241000283690 Bos taurus Species 0.000 description 11
- 241001465754 Metazoa Species 0.000 description 4
- 230000035876 healing Effects 0.000 description 3
- 210000003205 muscle Anatomy 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 239000008267 milk Substances 0.000 description 2
- 239000002674 ointment Substances 0.000 description 2
- 235000019271 petrolatum Nutrition 0.000 description 2
- 210000001519 tissue Anatomy 0.000 description 2
- 206010039509 Scab Diseases 0.000 description 1
- 208000025865 Ulcer Diseases 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000010339 dilation Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 239000002085 irritant Substances 0.000 description 1
- 231100000021 irritant Toxicity 0.000 description 1
- 230000007794 irritation Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 239000002991 molded plastic Substances 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
- 230000018040 scab formation Effects 0.000 description 1
- 231100000241 scar Toxicity 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 210000005070 sphincter Anatomy 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000036269 ulceration Effects 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Images
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
- ABSTRACT A teat dilator for insertion into the canal opening in a cows teat and characterized by a multi-sided frame of more than two members joined together; the frame providing a cavity which may be used for carrying a medicament into the canal and the members forming the frame being made of resilient plastic material so that the dilator will deform on insertion into the opening but expand again after passing through the opening to support and separate the canal walls, the dilator being adaptable to fit into and be useful with canals of varying length.
- dilator used heretofore is shown in US. Pat. No. 2,827,054, issued Mar. 18, 1958 to Towne.
- the dilator shown therein is of the wire type which is folded in the form of a sear spring. It is inserted into the canal and allowed to expand, thus opening the canal.
- This type of dilator is similar to a pipe cleaner except that there is a certain amount of resiliency in the wire which is used.
- the wiretype of dilator often times exerts too constant and too strong a pressure on the canal walls and may actually prove an irritant, promoting ulceration and preventing healing.
- dilators have built-in prongs which bit into the canal walls and lock themselves onto delicate tissues. These cause injury to the animal if great care is not exercised in removing them.
- Still another type of dilator uses materials which swell in the presence of fluid. Again, these have the problem of either being too tight or too loose depending on the size of the canal opening.
- a dilator in accordance with the present invention will promote healing in a canal by keeping the injured walls apart while at the same time relaxing and strengthening the sphincter muscles by bringing fresh blood to the point of dilation and to the muscles. It may further act as a mechanical means of applying and keeping medication at the point of injury or infection in the cow. Since the dilator is resilient enough to keep the canal open, it will prevent narrowing of the canal due to contraction of scar tissue. It also inhibits scab formation, thus preventing subsequent bleeding from scab removal during milking. Finally, the dilator can aid in the milking-out of cows who are normally hard to milk.
- FIG. I is a partially fragmentary view showing a dilator in accordance with the present invention inserted
- FIG. 3 is a sectional view along lines 15-13 of FIG. 2 showing the open frame and cavity for carrying the medicament;
- FIG. 4 is a side view of a dilator with medicament in the cavity shown in position before being inserted into the canal of a teat;
- FIG. 5 is a drawing showing the dilator inserted into a teat canal and exerting a minimum amount of pressure on the canal walls;
- FIG. 6 is another embodiment of a dilator with a drainage plug added.
- a teat dilator 10 which has a central opening or cavity 12 in which may be carried a lubricated medicament 14 such as petroleum jelly which is held in a container 16.
- a lubricated medicament 14 such as petroleum jelly which is held in a container 16.
- a number of dilators may be inserted into a container of material and as required one may be extracted. When the dilator is extracted, the cavity will be filled with the material so that it will be ready for use in treating an animal without the necessity of further handling of the medicament.
- the illustrated dilator 10 has a grip tab or touch 18 which provides the means of taking hold of the dilator without danger of contaminating the medicament.
- a stop 20 is provided adjacent to the tab 18 and serves the dual purpose of preventing the dilator from being inserted too far into the container 16 as well as preventing it from being inserted too far into the canal C of the teat T.
- Extending upwardly from the stop 20 is a stub portion 22 from which a pair of arms 24 extend outwardly.
- a second pair of arms 27 are provided and these arms 27 converge together from the outward position at 26; and meet to form an elongated nose portion 28.
- At the point of juncture 26 of the arms 24 and 27 rounded shoulder portions 30 free of teat irritating projections may be provided to assist in holding the dilator in the canal when in use.
- the dilator is deformed by the muscles of the teat after it has been inserted into place.
- the canal C is funnel shaped and above it is the interior portion of the teat called the cistern CI. Due to the frame design of the dilator 10 the walls of the canal are forced apart under sufficient pressure to keep them in that position but without the danger of providing too much pressure and causing irritation.
- the frame utilizes the funnel fit to help hold itself in place.
- the dilator will reopen to its full expansion after it has been inserted into the canal. This of course will depend upon the length and shape of the particular canal.
- cows teat or streak canals vary substantially from 4 to 15 mm. With some cows it may be as short as 4 to 5 mm. Thus, it is apparent that in order for a teat dilator to function correctly it must be able to adapt itself to such varying canal lengths.
- the stub is about 5 mm. long and the canal about 10 mm. long. With the shortest canals this brings the entire frame into the cistern and the stub holds back the canal walls.
- the arms 24 are about 10 mm. long and with longer canals they act to hold back the inner portion of the canal walls and to prevent drop out of the dilator.
- the shoulder portions 30 are advantageously within the cistern. This pemiits the shoulders to function as supports for the dilator when in use and also to prevent drop out.
- the dilator is made from a resilient plastic material which will not infect the animal.
- materials which are suitable for forming the dilator are ethylene vinyl acetate and the various vinyls.
- FIG. 6 Another embodiment is shown in FIG. 6. As shown therein, the dilator a is formed quite similar to the first embodiment. In dilator 10a the arms 24 are joined together at a rounded junction 32. The embodiment 10a does not have a grip tab 18 or touch. However, it does have a drainage opening 34 in the form of a short canal.
- a plug 36 which includes a grip 38, a shaft 40 and, if desired, a nose portion 42.
- the dilator 10a with the plug 36 in place functions in the same manner as dilator 10 and is inserted in the same fashion.
- the plug 36 is simply extracted from the drainage canal 34. Because of the shortness of the stub 22a any accummulated fluid in the cistern of the teat will drain off while the dilator 10a continues to function.
- the plug 36 may be fitted into the canal 34 and held in place by a friction fit or the nose 42 may be the principal retention means.
- the stub 22 may be eliminated and the arms 24 joined directly to the stop 20.
- medicament While in the description of the preferred embodiments and in the claims, the general term medicament is used, it is to be understood that it includes materials which are used primarily as a lubricant to salve with or without the addition of a particular drug. In some cases it may be desirable to use the dilator merely to insert a salve into the cows canal and plain petroleum jelly will be suitable for this purpose.
- a teat dilator adapted to be inserted into a canal opening of a cows teat and comprising a multisided, flexible, resilient, elongated open frame having four members joined together to form the frame, said frame being open at opposed sides providing an opening adapted to receive a medicament said members being formed of resilient plastic material, a first set of two members being joined together to provide an elongated nose portion for insertion into the canal opening, said firsttwo members extending outwardly from said nose portion and connected at their most outwardly expanse to a second set of two members to form said frame, said second set being joined together at their ends away from the connection to said first set to provide a stop means and limit the extent of insertion of said frame into said canal, said frame members being spaced widest apart at the connection at the first set of members to the second set of members and its members being deformable inwardly on entering the canal opening whereby the deformed dilator may be gradually inserted therein and may expand and adjust to conform to various size teat openings.
- a teat dilator adapted to be inserted into a canal opening of a cows teat and comprising a multisided, flexible and resilient frame having at least four members joined together to form the frame, said frame being open at opposed sides, said members being formed of resilient plastic material, a first set of two members being joined together to provide an elongated nose portion for insertion into the canal opening, said first two members extending outwardly from said nose portion and connected at their most outwardly expanse to a second set of two members to form said frame, said second set being joined together at their ends away from the connection to said first set, said members being deformable inwardly on entering the canal opening whereby the deformed dilator may be gradually inserted therein and may expand and adjust to conform to various size teat openings, a drainage opening in said frame positioned opposite the nose portion, a removable plug inserted in the drainage opening and adapted to be removed therefrom, said plug including a nose portion adapted to extend through the drainage opening to hold the plug in position.
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- 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)
- External Artificial Organs (AREA)
Abstract
A teat dilator for insertion into the canal opening in a cow''s teat and characterized by a multi-sided frame of more than two members joined together; the frame providing a cavity which may be used for carrying a medicament into the canal and the members forming the frame being made of resilient plastic material so that the dilator will deform on insertion into the opening but expand again after passing through the opening to support and separate the canal walls, the dilator being adaptable to fit into and be useful with canals of varying length.
Description
United States Patent Zackheim Nov. 28, 1972 [54] TEAT DILATOR 439,552 10/1890 Pomeroy 1 19/ 14.2 [72] Inventor: E Zackheim, Norwich, Conn 2,664,894 1/1954 Ganepy 128/261 [73] Assignee: Jules Silver, Norwich, Conn. Prima y Examiner-Hugh R. Chamblee 22] Filed: July 27 1970 Attorney-Curtis, Morris and Safford App]. No.: 58,569
[57] ABSTRACT A teat dilator for insertion into the canal opening in a cows teat and characterized by a multi-sided frame of more than two members joined together; the frame providing a cavity which may be used for carrying a medicament into the canal and the members forming the frame being made of resilient plastic material so that the dilator will deform on insertion into the opening but expand again after passing through the opening to support and separate the canal walls, the dilator being adaptable to fit into and be useful with canals of varying length.
5 Clains, 6 Drawing Figures PATENTEB um 28 1912 I 3 703 8 98 INVENTOR ELI 4. ZACK/457M ATTORNEYS TEAT DILATOR BACKGROUND OF THE INVENTION Teat dilators of various types have been used for many years in an attempt to open the canal of a cows teat. Among the purposes of the dilators are to aid in healing an infected canal, and also to assist milk-out for hard-to-milk cows. One type of a dilator is formed from molded plastic and functions primarily as a wedge which may be driven into the clogged canal. Such a dilator is shown in US. Pat. No. 2,664,984, issued Jan. 5, I954 to Gariepy. This type of dilator is of limited value.
Another type of dilator used heretofore is shown in US. Pat. No. 2,827,054, issued Mar. 18, 1958 to Towne. The dilator shown therein is of the wire type which is folded in the form of a sear spring. It is inserted into the canal and allowed to expand, thus opening the canal. This type of dilator is similar to a pipe cleaner except that there is a certain amount of resiliency in the wire which is used. The wiretype of dilator often times exerts too constant and too strong a pressure on the canal walls and may actually prove an irritant, promoting ulceration and preventing healing.
Other types of dilators have built-in prongs which bit into the canal walls and lock themselves onto delicate tissues. These cause injury to the animal if great care is not exercised in removing them.
Still another type of dilator uses materials which swell in the presence of fluid. Again, these have the problem of either being too tight or too loose depending on the size of the canal opening.
SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a teat dilator which may be of a universal application in that it will accommodate itself to the canal openings of various cows by exerting a sufficient pressure to keep the walls of the canals apart but not such extreme pressure to irritate or injure the animals. This is accomplished by using resilient plastic material formed as a flexible wedge frame forming a cavity in which a medicament may be placed and inserted into the canal opening.
A dilator in accordance with the present invention will promote healing in a canal by keeping the injured walls apart while at the same time relaxing and strengthening the sphincter muscles by bringing fresh blood to the point of dilation and to the muscles. It may further act as a mechanical means of applying and keeping medication at the point of injury or infection in the cow. Since the dilator is resilient enough to keep the canal open, it will prevent narrowing of the canal due to contraction of scar tissue. It also inhibits scab formation, thus preventing subsequent bleeding from scab removal during milking. Finally, the dilator can aid in the milking-out of cows who are normally hard to milk.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. I is a partially fragmentary view showing a dilator in accordance with the present invention inserted FIG. 3 is a sectional view along lines 15-13 of FIG. 2 showing the open frame and cavity for carrying the medicament;
FIG. 4 is a side view of a dilator with medicament in the cavity shown in position before being inserted into the canal of a teat;
FIG. 5 is a drawing showing the dilator inserted into a teat canal and exerting a minimum amount of pressure on the canal walls; and
FIG. 6 is another embodiment of a dilator with a drainage plug added.
DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawings and to FIGS. 1 through 5 in particular, a teat dilator 10 is shown which has a central opening or cavity 12 in which may be carried a lubricated medicament 14 such as petroleum jelly which is held in a container 16. A number of dilators may be inserted into a container of material and as required one may be extracted. When the dilator is extracted, the cavity will be filled with the material so that it will be ready for use in treating an animal without the necessity of further handling of the medicament.
The illustrated dilator 10 has a grip tab or touch 18 which provides the means of taking hold of the dilator without danger of contaminating the medicament. A stop 20 is provided adjacent to the tab 18 and serves the dual purpose of preventing the dilator from being inserted too far into the container 16 as well as preventing it from being inserted too far into the canal C of the teat T. Extending upwardly from the stop 20 is a stub portion 22 from which a pair of arms 24 extend outwardly. At the end 26 of the arms 24 away from the stub 22, a second pair of arms 27 are provided and these arms 27 converge together from the outward position at 26; and meet to form an elongated nose portion 28. At the point of juncture 26 of the arms 24 and 27 rounded shoulder portions 30 free of teat irritating projections may be provided to assist in holding the dilator in the canal when in use.
As shown in FIG. 5 in particular, the dilator is deformed by the muscles of the teat after it has been inserted into place. The canal C is funnel shaped and above it is the interior portion of the teat called the cistern CI. Due to the frame design of the dilator 10 the walls of the canal are forced apart under sufficient pressure to keep them in that position but without the danger of providing too much pressure and causing irritation. Advantageously the frame utilizes the funnel fit to help hold itself in place.
In some cases the dilator will reopen to its full expansion after it has been inserted into the canal. This of course will depend upon the length and shape of the particular canal.
The length of cows teat or streak canals vary substantially from 4 to 15 mm. With some cows it may be as short as 4 to 5 mm. Thus, it is apparent that in order for a teat dilator to function correctly it must be able to adapt itself to such varying canal lengths.
In the illustrated embodiments the stub is about 5 mm. long and the canal about 10 mm. long. With the shortest canals this brings the entire frame into the cistern and the stub holds back the canal walls. The arms 24 are about 10 mm. long and with longer canals they act to hold back the inner portion of the canal walls and to prevent drop out of the dilator. With a construction such as this, the shoulder portions 30 are advantageously within the cistern. This pemiits the shoulders to function as supports for the dilator when in use and also to prevent drop out.
Preferably the dilator is made from a resilient plastic material which will not infect the animal. Among the materials which are suitable for forming the dilator are ethylene vinyl acetate and the various vinyls.
Another embodiment is shown in FIG. 6. As shown therein, the dilator a is formed quite similar to the first embodiment. In dilator 10a the arms 24 are joined together at a rounded junction 32. The embodiment 10a does not have a grip tab 18 or touch. However, it does have a drainage opening 34 in the form of a short canal.
Into the opening 34 is fitted a plug 36 which includes a grip 38, a shaft 40 and, if desired, a nose portion 42.
In actual use the dilator 10a with the plug 36 in place functions in the same manner as dilator 10 and is inserted in the same fashion. After the dilator 10a has been in place and, if used, the medicament l4 allowed to function, it may be advantageous to drain the teat T. This may be accomplished while still retaining the dilator 10a in place. To do this the plug 36 is simply extracted from the drainage canal 34. Because of the shortness of the stub 22a any accummulated fluid in the cistern of the teat will drain off while the dilator 10a continues to function.
the plug 36 may be fitted into the canal 34 and held in place by a friction fit or the nose 42 may be the principal retention means.
In some applications the stub 22 may be eliminated and the arms 24 joined directly to the stop 20.
While in the description of the preferred embodiments and in the claims, the general term medicament is used, it is to be understood that it includes materials which are used primarily as a lubricant to salve with or without the addition of a particular drug. In some cases it may be desirable to use the dilator merely to insert a salve into the cows canal and plain petroleum jelly will be suitable for this purpose.
What is Claimed:
l. A teat dilator adapted to be inserted into a canal opening of a cows teat and comprising a multisided, flexible, resilient, elongated open frame having four members joined together to form the frame, said frame being open at opposed sides providing an opening adapted to receive a medicament said members being formed of resilient plastic material, a first set of two members being joined together to provide an elongated nose portion for insertion into the canal opening, said firsttwo members extending outwardly from said nose portion and connected at their most outwardly expanse to a second set of two members to form said frame, said second set being joined together at their ends away from the connection to said first set to provide a stop means and limit the extent of insertion of said frame into said canal, said frame members being spaced widest apart at the connection at the first set of members to the second set of members and its members being deformable inwardly on entering the canal opening whereby the deformed dilator may be gradually inserted therein and may expand and adjust to conform to various size teat openings.
2. A teat dilator as efined in cla1m 1 wherein shoulder portions are provided on the two members forming the nose, the shoulders being adjacent to the points where the two members are joined to the second set of members, said shoulders adapted to assist holding the dilator in place in the canal.
3. A teat dilator as defined in claim 1 and further including a drainage opening in said frame and positioned opposite the nose portion.
4. A teat dilator as defined in claim 3 and also including a removable plug inserted in the drainage opening and adapted to be removed therefrom.
5. A teat dilator adapted to be inserted into a canal opening of a cows teat and comprising a multisided, flexible and resilient frame having at least four members joined together to form the frame, said frame being open at opposed sides, said members being formed of resilient plastic material, a first set of two members being joined together to provide an elongated nose portion for insertion into the canal opening, said first two members extending outwardly from said nose portion and connected at their most outwardly expanse to a second set of two members to form said frame, said second set being joined together at their ends away from the connection to said first set, said members being deformable inwardly on entering the canal opening whereby the deformed dilator may be gradually inserted therein and may expand and adjust to conform to various size teat openings, a drainage opening in said frame positioned opposite the nose portion, a removable plug inserted in the drainage opening and adapted to be removed therefrom, said plug including a nose portion adapted to extend through the drainage opening to hold the plug in position.
Claims (5)
1. A teat dilator adapted to be inserted into a canal opening of a cow''s teat and comprising a multisided, flexible, resilient, elongated open frame having four members joined together to form the frame, said frame being open at opposed sides providing an opening adapted to receive a medicament said members being formed of resilient plastic material, a first set of two members being joined together to provide an elongated nose portion for insertion into the canal opening, said first two members extending outwardly from said nose portion and connected at their most outwardly expanse to a second set of two members to form said frame, said second set being joined together at their ends away from the connection to said first set to provide a stop means and limit the extent of insertion of said frame into said canal, said frame members being spaced widest apart at the connection at the first set of members to the second set of members and its members being deformable inwardly on entering the canal opening whereby the deformed dilator may be gradually inserted therein and may expand and adjust to conform to various size teat openings.
2. A teat dilator as defined in claim 1 wherein shoulder portions are provided on the two members forming the nose, the shoulders being adjacent to the points where the two members are joined to the second set of members, said shoulders adapted to assist holding the dilator in place in the canal.
3. A teat dilator as defined in claim 1 and further including a drainage opening in said frame and positioned opposite the nose portion.
4. A teat dilator as defined in claim 3 and also including a removable plug inserted in the drainage opening and adapted to be removed therefrom.
5. A teat dilator adapted to be inserted into a canal opening of a cow''s teat and comprising a multisided, flexible and resilient frame having at least four members joined together to form the frame, said frame being open at opposed sides, said members being formed of resilient plastic material, a first set of two members being joined together to provide an elongated nose portion for insertion into the canal opening, said first two members extending outwardly from said nOse portion and connected at their most outwardly expanse to a second set of two members to form said frame, said second set being joined together at their ends away from the connection to said first set, said members being deformable inwardly on entering the canal opening whereby the deformed dilator may be gradually inserted therein and may expand and adjust to conform to various size teat openings, a drainage opening in said frame positioned opposite the nose portion, a removable plug inserted in the drainage opening and adapted to be removed therefrom, said plug including a nose portion adapted to extend through the drainage opening to hold the plug in position.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US5856970A | 1970-07-27 | 1970-07-27 |
Publications (1)
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US3703898A true US3703898A (en) | 1972-11-28 |
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US58569A Expired - Lifetime US3703898A (en) | 1970-07-27 | 1970-07-27 | Teat dilator |
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Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3938517A (en) * | 1975-03-14 | 1976-02-17 | Anderson Carsten D | Teat cautery bullet |
US4281658A (en) * | 1979-07-09 | 1981-08-04 | Child Laboratories, Inc. | Dilator |
US4301796A (en) * | 1979-07-26 | 1981-11-24 | Child Laboratories Inc. | Method and apparatus for dispensing fluid |
WO1982000767A1 (en) * | 1980-09-08 | 1982-03-18 | Lab Inc Child | Teat dilator |
US4346714A (en) * | 1979-07-09 | 1982-08-31 | Child Laboratories Inc. | Method of inserting teat dilator |
US4359044A (en) * | 1979-08-01 | 1982-11-16 | Child Francis W | Method for placing implant in udder |
US4418686A (en) * | 1979-08-01 | 1983-12-06 | Child Laboratories Inc. | Implant for inhibiting mastitis in dairy cattle |
US4453930A (en) * | 1979-08-01 | 1984-06-12 | Child Laboratories Inc. | Method and instrument for placing implant in teat duct and udder |
US5423777A (en) * | 1993-10-27 | 1995-06-13 | Tajiri; Akira | Punctum plug |
US5676280A (en) * | 1995-08-04 | 1997-10-14 | Illinois Tool Works Inc. | Anti cross-contamination dual cartridge dispenser |
WO2005027775A1 (en) * | 2003-09-23 | 2005-03-31 | DUIRS, Lindsay, Alison in his capacity as trustee to the Malinzi Trust | Treatment and control device |
US20060065198A1 (en) * | 2004-08-16 | 2006-03-30 | Meads Roger W | Devices for improved milking |
US10085769B2 (en) * | 2013-03-14 | 2018-10-02 | Teleflex Medical Incorporated | Dilating cannula with radially expandable flange |
US20190015088A1 (en) * | 2017-07-13 | 2019-01-17 | Medtronic Vascular, Inc. | Collapsible dilator |
Citations (5)
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US439552A (en) * | 1890-10-28 | Julius t | ||
US1175129A (en) * | 1913-11-28 | 1916-03-14 | Immer O Crittenden | Surgical instrument. |
US2564177A (en) * | 1949-10-07 | 1951-08-14 | Larre Lab Inc | Pessary |
US2592800A (en) * | 1951-05-23 | 1952-04-15 | Gariepy Victor | Dilator for clogged teats |
US2664894A (en) * | 1952-09-03 | 1954-01-05 | Gariepy Victor | Dilator for clogged teats |
-
1970
- 1970-07-27 US US58569A patent/US3703898A/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US439552A (en) * | 1890-10-28 | Julius t | ||
US1175129A (en) * | 1913-11-28 | 1916-03-14 | Immer O Crittenden | Surgical instrument. |
US2564177A (en) * | 1949-10-07 | 1951-08-14 | Larre Lab Inc | Pessary |
US2592800A (en) * | 1951-05-23 | 1952-04-15 | Gariepy Victor | Dilator for clogged teats |
US2664894A (en) * | 1952-09-03 | 1954-01-05 | Gariepy Victor | Dilator for clogged teats |
Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3938517A (en) * | 1975-03-14 | 1976-02-17 | Anderson Carsten D | Teat cautery bullet |
US4281658A (en) * | 1979-07-09 | 1981-08-04 | Child Laboratories, Inc. | Dilator |
US4346714A (en) * | 1979-07-09 | 1982-08-31 | Child Laboratories Inc. | Method of inserting teat dilator |
US4301796A (en) * | 1979-07-26 | 1981-11-24 | Child Laboratories Inc. | Method and apparatus for dispensing fluid |
US4359044A (en) * | 1979-08-01 | 1982-11-16 | Child Francis W | Method for placing implant in udder |
US4418686A (en) * | 1979-08-01 | 1983-12-06 | Child Laboratories Inc. | Implant for inhibiting mastitis in dairy cattle |
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Owner name: PLAS-PAK INDUSTRIES, INC., 40 INDUSTRIAL PARK ROAD Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:CONNECTICUT NATIONAL BANK, THE;REEL/FRAME:004583/0259 Effective date: 19860718 |