Milking apparatus for laboratory animals
IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0220818
(2000-12-21)
|
우선권정보 |
JP-0061552 (2000-03-07) |
국제출원번호 |
PCT/JP00/09112
(2000-12-21)
|
국제공개번호 |
WO01/67064
(2001-09-13)
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발명자
/ 주소 |
|
출원인 / 주소 |
- Nihon University, School Juridical Person
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
3 인용 특허 :
10 |
초록
▼
A milking apparatus for laboratory animals enables a milking operation to be performed on a laboratory animal (such as a rat) by a single experimenter, and also enables universal milking data to be obtained that is not influenced by individual difference among experimenters. A teat cup enables milki
A milking apparatus for laboratory animals enables a milking operation to be performed on a laboratory animal (such as a rat) by a single experimenter, and also enables universal milking data to be obtained that is not influenced by individual difference among experimenters. A teat cup enables milking to be performed directly from the nipple of a relatively small and prolific laboratory animal such as a rat and mouse. The invention provides useful means for clarifying the influence of harmful extrinsic substances on living organisms via milk.The apparatus comprises a milk-collecting container 10 whose inside can be kept blocked from the outside air, two, i.e., a first and second, tubes 12, 13 inserted into the milk-collecting container in a communicated manner, and a teat cup 20 replaceably mounted on the other end of the first tube 12 . The other end of the second tube 13 is provided with a pressure switching means such as electromagnetic valves 33 A and 33 B that can switch the state inside the second tube 13 between a state where the inside is connected to the negative pressure creating source 35 and another state where it is opened to the atmosphere.
대표청구항
▼
1. A milking apparatus for laboratory animals, comprising:a milk-collecting container whose inside can be kept shut from the outside air;first and second tubes having one of their ends inserted into an upper part of the milk-collecting container in such a manner as to communicate with the inside of
1. A milking apparatus for laboratory animals, comprising:a milk-collecting container whose inside can be kept shut from the outside air;first and second tubes having one of their ends inserted into an upper part of the milk-collecting container in such a manner as to communicate with the inside of the container;a teat cup replaceably attached to the other end of the first tube;a negative pressure creating source attached to the other end of the second tube; anda pressure switching means disposed between the milk-collecting container and the negative pressure creating source for switching, in a pulsed manner, the state inside of the second tube between an atmospheric pressure state and a negative pressure state created by the negative pressure creating source. 2. A milking apparatus for laboratory animals according to claim 1, wherein the negative pressure creating source is a vacuum pump, the apparatus further comprising a pressure controller for controlling the pressure inside the second tube. 3. A milking apparatus for laboratory animals according to claim 1, wherein the negative pressure creating source is a negative pressure creating means having, as an operation source, the amount of motion of a fluid flowing at a substantially stable flow rate. 4. A milking apparatus for laboratory animals according to claim 1, wherein the pressure switching means, with the second tube connected to the negative pressure creating source at all times, comprises an open/close valve capable of switching the state of the inside of the second tube between a state where the inside is opened to the atmosphere and another state where the inside is blocked from the atmosphere. 5. A milking apparatus for laboratory animals according to claim 1, wherein the pressure switching means comprises a first open/close valve for connecting and disconnecting the second tube to and from the negative pressure creating source, and a second open/close valve for switching the state inside the second tube upstream of the first open/close valve between a state where the inside is opened to the atmosphere and another state where the inside is blocked from the atmosphere. 6. A milking apparatus for laboratory animals according to claim 4, wherein the open/close valve is an electromagnetic valve, the apparatus further comprising a control means for controlling the open/close timing of the electromagnetic valve. 7. A milking apparatus for laboratory animals according to claim 1, wherein the pressure switching means includes a pulsator valve. 8. A milking apparatus for laboratory animals according to claim 1, wherein the teat cup comprises a top surface portion having an insertion hole into which the nipple of a laboratory animal is to be inserted, and an outer fitting portion extending from the periphery of the top surface portion for fitting with the first tube, wherein at least portions of the top surface portion near the insertion hole are provided with softness and flexibility such that they can, at the time of milking, deform inwardly when a negative pressure develops inside the first tube and return to their original shape when the atmospheric pressure is present inside the first tube. 9. A milking apparatus for laboratory animals according to claim 8, wherein an internal peripheral surface of the insertion hole of the teat cup is inclined such that the diameter of the insertion hole is smaller towards the first tube. 10. A milking apparatus for laboratory animals according to claim 8, wherein cuts are formed radially on the top surface of the teat cup near the insertion hole. 11. A milking apparatus for laboratory animals according to claim 8, wherein a front-end portion of the first tube on which the teat cup is to be mounted is formed with an inclined surface such that the diameter of the first tube becomes larger towards the teat cup. 12. A milking apparatus for laboratory animals according to claim 1, wherein the apparatus is adapted for rats or mice. 13. A milking apparatus for laboratory animals according to claim 12, wherein a negative pressure created at the front end of the teat cup during milking is in the range of from 0 mmHg to −210 mmHg, preferably from 0 mmHg to −150 mmHg.
이 특허에 인용된 특허 (10)
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Reisgies Rolf W. (2101 Norco Dr. Norco CA 91760), Automatic stimulation apparatus for milking machines.
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Nordegren Sven-Ake (Soedertelje NY SW) Norton Douglas J. (Red Hook NY), Electronic milker.
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Carrano James A. ; Blair Timothy E. ; Erdman Roger K. ; Nelson William S. ; Pulvermacher Ronald J. ; Tucker ; Jr. George H., Milk meter.
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Musha Toshimitsu (2-13-17 Minami-tsukushino ; Machida city ; Tokyo JPX) Horiuchi Seiji (Second accommodations 718-12 ; Ooaza toluma ; Nagano city ; Nagano prefecture JPX) Matsuki Kiyotaka (Nagano JPX, Milking machine.
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Woolford Murray W. (Hamilton NZX) Sherlock Robert A. (Hamilton NZX) Williamson John H. (Hamilton NZX), Milking machinery.
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Christopher J. Fleischman, Milking vacuum fluctuation filter.
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Bender Lloyd F. (Hayward WI) Schmid Rolyn A. (Hayward WI), Mobile milk unit and system.
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Johnston Garry, Position-adaptor for milking machine inflations.
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Petterson Torbjorn Karl Ingemar,SEX, Teatcup liner and a method of manufacturing a teatcup liner.
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Tan Jinglu ; Wang Limin, Vacuum regulator.
이 특허를 인용한 특허 (3)
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Watanabe, Toshi, Automatic milking apparatus for laboratory animals.
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Gudmundsson, Mats, Milk sampling.
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Salaheddine, Mourad; Klyutmans, Marc Peter Elvira Maria; Streng, Pieter Cornelis Johannes Maria, Milking device.
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