CA1166530A - Artificial insemination instrument for livestock - Google Patents
Artificial insemination instrument for livestockInfo
- Publication number
- CA1166530A CA1166530A CA000353176A CA353176A CA1166530A CA 1166530 A CA1166530 A CA 1166530A CA 000353176 A CA000353176 A CA 000353176A CA 353176 A CA353176 A CA 353176A CA 1166530 A CA1166530 A CA 1166530A
- Authority
- CA
- Canada
- Prior art keywords
- semen
- tube
- chamber
- injection tube
- storage device
- 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
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Abstract
ABSTRACT
A storage device for semen, for use in artificial insemination of livestock has a body with an internal space divided into a semen chamber and a serum chamber by a dialysis film. The semen chamber can be connected to (a) a pump, and (b) an injector device. The injector device has a tubular body carrying a removable injection tube which is adjustable longitudinally of the body and can be fully retracted within a radially-bulged end zone of the body. In a method of use, the bulged end of the body is inserted into the cervical canal, with the injection tube retracted. The injection tube is then adjusted to protrude into the uterine cavity, and the pump is operated to force semen from the semen chamber through the injection tube into the uterine cavity.
A storage device for semen, for use in artificial insemination of livestock has a body with an internal space divided into a semen chamber and a serum chamber by a dialysis film. The semen chamber can be connected to (a) a pump, and (b) an injector device. The injector device has a tubular body carrying a removable injection tube which is adjustable longitudinally of the body and can be fully retracted within a radially-bulged end zone of the body. In a method of use, the bulged end of the body is inserted into the cervical canal, with the injection tube retracted. The injection tube is then adjusted to protrude into the uterine cavity, and the pump is operated to force semen from the semen chamber through the injection tube into the uterine cavity.
Description
1 ~ 6653~
N
"Artificial insemination instrument ~or livestock"
SPECIPIC~TION
N K N UND or -H~ IN e N lU~
This invention relates to an artificial insemlnation instrument for livestock~ particularl~
swine.
In the art o artificial insemination o livestoc~
it is known that the sperms o* swine are shorter lived than those of other livestock~ and hence long-time preservation of swine semen ls attended b~ dlfficulties.
fn order to pOpularise arti~cial insemination o swine, it is necessary to allOw easy access to semen o~
choice boars 7 and to ensure easy treatment thereof so that any~average ~armer can preserve and use such semen without requiring an~ spe i~ic skill nor a~ complicated equipment. Howe~er, as things stand now, there are few ~armhOuses which are furnished with a rerigerator sui~able or preservation o semen, and in most cases, : ::
~20 ~ semen~is procured from a dealer and inseminated each time a breed sow comes into heat~.
lso~ in~the operation for injectlng the thus procured semen into the uterine cavit~, it is usual to~Suck up~semen into an inje~tor from a container~ then insert the l~je~tor into the vagi~al region and inject the semen. In such an operatiOn~, however~ semen o~ten 10ws back from the cervical canal~ resulting in ~insuf1cient injection of semen into the uterine cav~ty.
9~ se ~ per~D~ su~h ~em~a~ w~ ~r 30~ more sows successively b~ uslng a single ~njectorg it :
N
"Artificial insemination instrument ~or livestock"
SPECIPIC~TION
N K N UND or -H~ IN e N lU~
This invention relates to an artificial insemlnation instrument for livestock~ particularl~
swine.
In the art o artificial insemination o livestoc~
it is known that the sperms o* swine are shorter lived than those of other livestock~ and hence long-time preservation of swine semen ls attended b~ dlfficulties.
fn order to pOpularise arti~cial insemination o swine, it is necessary to allOw easy access to semen o~
choice boars 7 and to ensure easy treatment thereof so that any~average ~armer can preserve and use such semen without requiring an~ spe i~ic skill nor a~ complicated equipment. Howe~er, as things stand now, there are few ~armhOuses which are furnished with a rerigerator sui~able or preservation o semen, and in most cases, : ::
~20 ~ semen~is procured from a dealer and inseminated each time a breed sow comes into heat~.
lso~ in~the operation for injectlng the thus procured semen into the uterine cavit~, it is usual to~Suck up~semen into an inje~tor from a container~ then insert the l~je~tor into the vagi~al region and inject the semen. In such an operatiOn~, however~ semen o~ten 10ws back from the cervical canal~ resulting in ~insuf1cient injection of semen into the uterine cav~ty.
9~ se ~ per~D~ su~h ~em~a~ w~ ~r 30~ more sows successively b~ uslng a single ~njectorg it :
- 2 _ ~ 3 ~530 needs to disinfect the injector which touches the cervical canal with an antiseptlc solution or boiling water at each time of use 7 because otherwise an undesirable e~fect might be given to the sperms and reduce the impregnation rate. Thus~ the currently practiced semen injecting operation is not easy and involves many dlfficult problems~
OBJECT OF THE INYENTION
In view of the above 3 the present invention has for its object to provide an improved instrument for arti~icial insem~nation of livestock~ particularly swine~ capable o acilitating semen preservation and elongathon of its shel lie~ and allOwin~ immediate injection of s~men from the inje~tor with no need of transfusing semen from a p.reservation container lnto the ~njector. It is alsO an object to provide an injector which prevents backflow of semen and c~n be securely inserted deep lnto the cervical canal. It is a further object ~o provide an injector in wh~ch the portion which touches the cervical canal is easily replaceable~ thereby avoiding the necessity of : disinfection at each time of use of the instrument.
In general~ it is the object of th~ invention to provide a device wh~h is ver~ ~anitary ~nd which provides a marked improYe~ent in impregnatlon rate.
The in~ention is now described in detail with refere~ce to an embodlment thereof shown in the accompanying drawlngs.
In the drawings:
Fig,. 1 is a side elevation, with parts broken away and parts shown in sectlon, of a semen reservolr instrumentj Fig. 2 is a side elevation 9 with parts shown in section, of the principal members of a semen in j QCtor;
~ ig~ 3 is a schematic view to illustrate a method of inseminatiOn;
~ ig~ 4 is an elevation~ with ~rts shown in 10 sectiOn 9 of a modification.
l:)ESCRIPTION OF THE PREFE~RED E;MBODIM~SNT
The instrument accor~in~ to this invention may be roughly divided in~o the following three parts:
a semen reservoir 1, a semen in~ector 11 and a pump 10.
First 7 the semen reser~oir 1 is descrlbed with reference to ~g. 1. It i5 to be noted tha~ a dialysis preservat~on technique ~s emplo~ed for preservation ~ Of semen in this invention.
: : In Fig~ 1, referenc~ numeral 2 indicates an inner cylinder made from a d~alysis film ~such as cellophane~ and designed to contain se~en therein.
This inner c~linder 2 is disposed in an outer c~linder : 3:made rom a s~nthetIc resin film such as polyprop~lene ; ~ or vin~l, with a predetermined space provided there-be~ween to form a double-cylindered structure~ The : ~ dialyzate (such as;serum~, which îs a nutrient source : for the semen, is filled in the space between said : ~ inner cylinder 2 and outer c~llnder 3.
Both ends of said inner and Outer cylinders 2, 3 are tightly sealed by packing members 4a9 4b each of - 4 ~
1 3 66~30 which comprises 0-rings 5 and associated rubher bands 6 for securing tightnessl ~ach of said packing members 4a, 4b is provided with a ~rst tube 7a (7b~ which is communicated with the chamber defined by the inner c~linder 2 and a second tube 8a ~8b) which is -communicated with the chamber defined between said inner cylinder 2 and outer c~linder 3. The openings of these tubes 7a, 7b~ 8a, 8b can be sealed b~ a plug 9.
The two tubes 8a~ 8b could both be arranged at a same end~ and need not be at diferent ends as shown.
The semen injector 11 is now described with reerence to ~i~. 20 In the drawin~ reference numeral 12 denotes a hOlder pipe made of stainl~ss steel or other suitable matPrial and which has at its rear end a grip 13 and is alsO provided at its ~ore end with a re~ovable cylindrical member lS having a bulge 16 at an end~ In this holder pipe 12 is slidabl~ inserted a tube 17 o which the fore end is jo ned ~ a detachable joint 20 to an injectlon tube 19 which is arranged to be e~tendable telescop~cally through said end-bulged cylin~rical member 15 telescopicall~. The rear end of said tube 17 is joined to a connection pipe 18 which~is connected to one o~ said first tubes 7a or 7b pro~ided in the packing members 4a, 4b o~ said semen reservoir 1. In the grip 13 is provided a stop screw 14 ~or fixi~ the injection tube 19 at a desired extended position. This stop screw 14 bears laterally against the plpe 18 to inhlbit sliding movement o the tub~ 17~
5 _ 1 3 6~3~
Lastly~ the pump 10 comprises a generall~ known t~pe of rubber pouch and a pipe lOa connected thereto as shown în Fiy. 1~ said pipe lOa being connected to one Of the irst tubes 7a or 7b provided in the paclcing members 4a, 4b to trans~er pressure into the inner cylinder 2.
For storing semen in the instrument of this inventiOn 7 a semen collectOr is connected to one of the tubes 7a or 7b in the packing members 4a~ 4b and the semen is charged into the inner c~linder chamber 2, an~ ater completing thi~s operatiOn~ the tube is again plugged. In the meant~me, the dialyzate is poured into the outer cylinder chamber 3 from one of the second tubes 8a or 8bo Thus~ the supplied semen is encompassed by the dialyzate with the dialysis film therebetween so that nutrition is given to the sperms.
As the sperms are refrigerated at 15C under such a : sealed condition~ they can be kept live and active for as long as 7 to 8 da~s. Also~ no sped flc re~rigerator is ; 20 required~ and an~ ord:nary domestic refrlgerator can be used for preservation.
For performing insemination~ firstly the connection ~ pipe 18 of the semen injector ~1 is connected to one of :~ :
~ the first tubes 7a or 7b o the packing me~bers 4a~ 4b : o~ the semen reservoir 1 that has just been taken out of : : the rerigerator~ and the other of said first tubes is ~: ~ connected ~ the pump 10 to thereby complete the set upO
~hen ,~ with the semen reservoir 1 held by one hand of the operatOr ~r preferabl~ suspended from the operator's neck, the hoIder p~pe 12 of the seme~ injector 11 is :: ~
- \
6 ~ 3 {3 inserted into the v~gina 21 so that the end-bulyed cylindrical member lS is inserted through the outer os uteri 22 intO the cervical canal 23 as shown In ~ig. 3.
With the cylindrical member 15 kept inserted in the cervical canal 23~ the connection pipe 18 is moved forwards by a length of about 3 to 4 cm so that the injection tube 19 pro~ects out ~ a length ~ from the c~lindrical member lS to advance deep into the uterine cavit~ 24. The injection tube 19 is fixed at khis position b~ means of the stop screw 14 at the grip 13, and then the manual pump 10 is operated to in~ect semen in the inner cylinder chamber 2 into ~he uterine cavity 24 through the injection tube 19. ~urlng -~his semen înjection operation~ the bul~e 16 at the end of the cylindrlcaI member 15 presses tightl~ against the wall of tha cerv~cal canal 23 to inhibit backflow o~ semen, allOwing the whole~supply of seme~ ~o be injected into tha uterine cavity 24.
; : After completion of in~ection~ the holder pipe 12 :20~ is pulled out of the vagina 21 and the cylind~ical member 15 a~ the and thereof is removed to replace the nject~on tube 19 and tube 17 with new ones, and:after setting~them properly, the device is used for the next ;; r~n e~inseminatlon operation~
Referring now to ~ig. 4, there is shown a modifîed form of semen lnjector. As compared with the structure des ribed abOv~ w~th referen~e to ~ig. 2, in the modiied :: :
instru~ent~ the s~op screw 1~ tube 17 and joint 20 are eliminated.: The injector tube 19a ls modified so as to ~: ~ 30 ba attached ~ threading to a modiied bulge 16a formed :: :
I 1 6653~
directly on the end of a modiied h~lder pipe 12a.
This permits the projecting length ~ of the tube l9a to be easîly adjusted by rotation relative to the bulge 16a, and the tube l9a can be readll~ removed a~d replaced. The structure is alsO simpliied in that the pipe 18a is now directly connected to a reduced nipple 26 formed on the end of he modified grip 13a~
Thus~ with the device of this lnvention, adopting the dialytic preservation method, the reserve of semen can be stored for a long time in an ordinary type of refrigerator, and in the insemination operatiorl~ such reservoir can immediatel~ serve as a semen supply tan~, allOwing injection of semen with no risk of exposure to the outar air~ thus el~minating the problem of mixing of su~dry ~erms or degeneration of semen and also allOwîng eas~ prepara~ion or the injection operation~
Further~ Owing to prolongation of the semen shelf li~e~ it is unnecessar~ to take the trouble of procuring seme~ each time a sow comes into heat, and semen can be readily used ~hanever lt is needed.
~ urther 7 sirlce an end-bulged c~ rical portlon is provided at t~e end o~ th holder pipe of the semen Injector~ and the in~ection tube can be exterlded out a desired length ~rom said cyl~ndr~cal portion~ said ~njectiOn tube can be inserted deep into the cervical canal with no risk of lnjuring the uterus b~ the instrumen~ while preventl~g backflow o~ semen~ so that the sem~n ma~ntaining hlgh spermal activit~ owing to : 30 dial~tic~preser~ation ~an be injected sufficiently ~ into th~ uterine cavity to .improve the fertllisatiOn : rate~
In additiOn~ since both the injection tube and tube 17 can be easil~ removed from the ho:Lder pipe and are replaceable with new ones ater each use for an in jection operatlon, disinfection of the princlpal parts Of the instrument is unneces~ary to promote efficiency of the injectiOn work whiïe allOwing alwa~s clean and h~gienic insemination Operation~
:
_ 9 _
OBJECT OF THE INYENTION
In view of the above 3 the present invention has for its object to provide an improved instrument for arti~icial insem~nation of livestock~ particularly swine~ capable o acilitating semen preservation and elongathon of its shel lie~ and allOwin~ immediate injection of s~men from the inje~tor with no need of transfusing semen from a p.reservation container lnto the ~njector. It is alsO an object to provide an injector which prevents backflow of semen and c~n be securely inserted deep lnto the cervical canal. It is a further object ~o provide an injector in wh~ch the portion which touches the cervical canal is easily replaceable~ thereby avoiding the necessity of : disinfection at each time of use of the instrument.
In general~ it is the object of th~ invention to provide a device wh~h is ver~ ~anitary ~nd which provides a marked improYe~ent in impregnatlon rate.
The in~ention is now described in detail with refere~ce to an embodlment thereof shown in the accompanying drawlngs.
In the drawings:
Fig,. 1 is a side elevation, with parts broken away and parts shown in sectlon, of a semen reservolr instrumentj Fig. 2 is a side elevation 9 with parts shown in section, of the principal members of a semen in j QCtor;
~ ig~ 3 is a schematic view to illustrate a method of inseminatiOn;
~ ig~ 4 is an elevation~ with ~rts shown in 10 sectiOn 9 of a modification.
l:)ESCRIPTION OF THE PREFE~RED E;MBODIM~SNT
The instrument accor~in~ to this invention may be roughly divided in~o the following three parts:
a semen reservoir 1, a semen in~ector 11 and a pump 10.
First 7 the semen reser~oir 1 is descrlbed with reference to ~g. 1. It i5 to be noted tha~ a dialysis preservat~on technique ~s emplo~ed for preservation ~ Of semen in this invention.
: : In Fig~ 1, referenc~ numeral 2 indicates an inner cylinder made from a d~alysis film ~such as cellophane~ and designed to contain se~en therein.
This inner c~linder 2 is disposed in an outer c~linder : 3:made rom a s~nthetIc resin film such as polyprop~lene ; ~ or vin~l, with a predetermined space provided there-be~ween to form a double-cylindered structure~ The : ~ dialyzate (such as;serum~, which îs a nutrient source : for the semen, is filled in the space between said : ~ inner cylinder 2 and outer c~llnder 3.
Both ends of said inner and Outer cylinders 2, 3 are tightly sealed by packing members 4a9 4b each of - 4 ~
1 3 66~30 which comprises 0-rings 5 and associated rubher bands 6 for securing tightnessl ~ach of said packing members 4a, 4b is provided with a ~rst tube 7a (7b~ which is communicated with the chamber defined by the inner c~linder 2 and a second tube 8a ~8b) which is -communicated with the chamber defined between said inner cylinder 2 and outer c~linder 3. The openings of these tubes 7a, 7b~ 8a, 8b can be sealed b~ a plug 9.
The two tubes 8a~ 8b could both be arranged at a same end~ and need not be at diferent ends as shown.
The semen injector 11 is now described with reerence to ~i~. 20 In the drawin~ reference numeral 12 denotes a hOlder pipe made of stainl~ss steel or other suitable matPrial and which has at its rear end a grip 13 and is alsO provided at its ~ore end with a re~ovable cylindrical member lS having a bulge 16 at an end~ In this holder pipe 12 is slidabl~ inserted a tube 17 o which the fore end is jo ned ~ a detachable joint 20 to an injectlon tube 19 which is arranged to be e~tendable telescop~cally through said end-bulged cylin~rical member 15 telescopicall~. The rear end of said tube 17 is joined to a connection pipe 18 which~is connected to one o~ said first tubes 7a or 7b pro~ided in the packing members 4a, 4b o~ said semen reservoir 1. In the grip 13 is provided a stop screw 14 ~or fixi~ the injection tube 19 at a desired extended position. This stop screw 14 bears laterally against the plpe 18 to inhlbit sliding movement o the tub~ 17~
5 _ 1 3 6~3~
Lastly~ the pump 10 comprises a generall~ known t~pe of rubber pouch and a pipe lOa connected thereto as shown în Fiy. 1~ said pipe lOa being connected to one Of the irst tubes 7a or 7b provided in the paclcing members 4a, 4b to trans~er pressure into the inner cylinder 2.
For storing semen in the instrument of this inventiOn 7 a semen collectOr is connected to one of the tubes 7a or 7b in the packing members 4a~ 4b and the semen is charged into the inner c~linder chamber 2, an~ ater completing thi~s operatiOn~ the tube is again plugged. In the meant~me, the dialyzate is poured into the outer cylinder chamber 3 from one of the second tubes 8a or 8bo Thus~ the supplied semen is encompassed by the dialyzate with the dialysis film therebetween so that nutrition is given to the sperms.
As the sperms are refrigerated at 15C under such a : sealed condition~ they can be kept live and active for as long as 7 to 8 da~s. Also~ no sped flc re~rigerator is ; 20 required~ and an~ ord:nary domestic refrlgerator can be used for preservation.
For performing insemination~ firstly the connection ~ pipe 18 of the semen injector ~1 is connected to one of :~ :
~ the first tubes 7a or 7b o the packing me~bers 4a~ 4b : o~ the semen reservoir 1 that has just been taken out of : : the rerigerator~ and the other of said first tubes is ~: ~ connected ~ the pump 10 to thereby complete the set upO
~hen ,~ with the semen reservoir 1 held by one hand of the operatOr ~r preferabl~ suspended from the operator's neck, the hoIder p~pe 12 of the seme~ injector 11 is :: ~
- \
6 ~ 3 {3 inserted into the v~gina 21 so that the end-bulyed cylindrical member lS is inserted through the outer os uteri 22 intO the cervical canal 23 as shown In ~ig. 3.
With the cylindrical member 15 kept inserted in the cervical canal 23~ the connection pipe 18 is moved forwards by a length of about 3 to 4 cm so that the injection tube 19 pro~ects out ~ a length ~ from the c~lindrical member lS to advance deep into the uterine cavit~ 24. The injection tube 19 is fixed at khis position b~ means of the stop screw 14 at the grip 13, and then the manual pump 10 is operated to in~ect semen in the inner cylinder chamber 2 into ~he uterine cavity 24 through the injection tube 19. ~urlng -~his semen înjection operation~ the bul~e 16 at the end of the cylindrlcaI member 15 presses tightl~ against the wall of tha cerv~cal canal 23 to inhibit backflow o~ semen, allOwing the whole~supply of seme~ ~o be injected into tha uterine cavity 24.
; : After completion of in~ection~ the holder pipe 12 :20~ is pulled out of the vagina 21 and the cylind~ical member 15 a~ the and thereof is removed to replace the nject~on tube 19 and tube 17 with new ones, and:after setting~them properly, the device is used for the next ;; r~n e~inseminatlon operation~
Referring now to ~ig. 4, there is shown a modifîed form of semen lnjector. As compared with the structure des ribed abOv~ w~th referen~e to ~ig. 2, in the modiied :: :
instru~ent~ the s~op screw 1~ tube 17 and joint 20 are eliminated.: The injector tube 19a ls modified so as to ~: ~ 30 ba attached ~ threading to a modiied bulge 16a formed :: :
I 1 6653~
directly on the end of a modiied h~lder pipe 12a.
This permits the projecting length ~ of the tube l9a to be easîly adjusted by rotation relative to the bulge 16a, and the tube l9a can be readll~ removed a~d replaced. The structure is alsO simpliied in that the pipe 18a is now directly connected to a reduced nipple 26 formed on the end of he modified grip 13a~
Thus~ with the device of this lnvention, adopting the dialytic preservation method, the reserve of semen can be stored for a long time in an ordinary type of refrigerator, and in the insemination operatiorl~ such reservoir can immediatel~ serve as a semen supply tan~, allOwing injection of semen with no risk of exposure to the outar air~ thus el~minating the problem of mixing of su~dry ~erms or degeneration of semen and also allOwîng eas~ prepara~ion or the injection operation~
Further~ Owing to prolongation of the semen shelf li~e~ it is unnecessar~ to take the trouble of procuring seme~ each time a sow comes into heat, and semen can be readily used ~hanever lt is needed.
~ urther 7 sirlce an end-bulged c~ rical portlon is provided at t~e end o~ th holder pipe of the semen Injector~ and the in~ection tube can be exterlded out a desired length ~rom said cyl~ndr~cal portion~ said ~njectiOn tube can be inserted deep into the cervical canal with no risk of lnjuring the uterus b~ the instrumen~ while preventl~g backflow o~ semen~ so that the sem~n ma~ntaining hlgh spermal activit~ owing to : 30 dial~tic~preser~ation ~an be injected sufficiently ~ into th~ uterine cavity to .improve the fertllisatiOn : rate~
In additiOn~ since both the injection tube and tube 17 can be easil~ removed from the ho:Lder pipe and are replaceable with new ones ater each use for an in jection operatlon, disinfection of the princlpal parts Of the instrument is unneces~ary to promote efficiency of the injectiOn work whiïe allOwing alwa~s clean and h~gienic insemination Operation~
:
_ 9 _
Claims (5)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. An injector device, for use in artificial insemination of livestock, comprising a tubular body carrying a removable injection tube mounted in longitudinally adjustable manner in an end of said body, said body including a radially-bulged zone adjacent to said end, this bulge to press tightly against the cervical wall of an animal when the device is in use, to inhibit backflow of semen.
2. An injector device, as claimed in claim 1, wherein said tubular body comprises a holder pipe having said radially bulged zone, and a delivery tube slidable longitudinally in said holder pipe, said injection tube being engaged with an end of said delivery tube.
3. An injector device, as claimed in claim 2, comprising tightening means on said holder tube positioned to engage with said delivery tube for locking said delivery tube in a selected position of longitudinal sliding.
4. In combination, for the injection of semen during artificial insemination of livestock, a storage device comprising a body including an internal space, a dialysis film sealed to the body within said space and dividing said space into a first chamber and a second chamber, two First conduits in said body communicating with said first chamber, at least one second conduit in said body communicating with said second chamber, and means for stoppering said at least one second conduit, and an injector device as claimed in claim 1, a flexible tube connecting one of the first conduits of the storage device to the injection tube of the injector device, and pump means connected to the other of the first conduits of the storage device.
5. The method of artificial insemination of livestock, utilizing the combination of storage device and injector device claimed in claim 4, which comprises the steps of:
(i) placing live semen in the first chamber of the storage device;
(ii) with the injection tube retracted into the tubular body, inserting the tubular body by its bulged end into the cervical canal;
(iii) whilst the tubular body is positioned within the cervical canal, adjusting the injection tube to extend from the end of the tubular body deep into the uterine cavity; and (iv) operating the pump means to force semen from the first chamber of the storage device through said flexible tube and said injection tube into the uterine cavity.
(i) placing live semen in the first chamber of the storage device;
(ii) with the injection tube retracted into the tubular body, inserting the tubular body by its bulged end into the cervical canal;
(iii) whilst the tubular body is positioned within the cervical canal, adjusting the injection tube to extend from the end of the tubular body deep into the uterine cavity; and (iv) operating the pump means to force semen from the first chamber of the storage device through said flexible tube and said injection tube into the uterine cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000353176A CA1166530A (en) | 1980-06-02 | 1980-06-02 | Artificial insemination instrument for livestock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000353176A CA1166530A (en) | 1980-06-02 | 1980-06-02 | Artificial insemination instrument for livestock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1166530A true CA1166530A (en) | 1984-05-01 |
Family
ID=4117081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000353176A Expired CA1166530A (en) | 1980-06-02 | 1980-06-02 | Artificial insemination instrument for livestock |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1166530A (en) |
-
1980
- 1980-06-02 CA CA000353176A patent/CA1166530A/en not_active Expired
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| Date | Code | Title | Description |
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| MKEX | Expiry |