Method and apparatus for injecting fluid into animals and disposable front loadable syringe therefor
First Claim
1. A syringe holder for holding a syringe installed into a front loadable injector, the holder comprising:
- a section defining a cylindrical bore for receiving a cylindrical syringe therein, an open back end for communicating with an injector housing and an open front end for insertion of the syringe into the bore through said open front end and removal of the syringe from the bore through said open front end;
the section further defining an internal annular recess in communication with said bore at a forward end of said holder, for receiving and retaining connecting structure of a syringe.
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Accused Products
Abstract
An animal fluid injector, replaceable syringe and method of replacement of the syringe in the injector are provided in which the syringe is loadable and unloadable into and from the injector through the open front end of a pressure jacket of the injector, thereby permitting replacement without retraction of the syringe plunger drive or disconnection of the injection tubing. The syringe is provided with a pressure restraining front end, such as an integral or removable cap with structure such as threads that lock the syringe to the front end of the jacket by mating with threads on the jacket. A mechanism in the injector, which includes, for example, a key on cam ring operated by a lever with one hand of an operator, interacts with structure such asymmetrically spaced notches on the back end of the syringe to, for example, rotate the syringe and simultaneously translate or rotate a coupling on the syringe plunger into and out of engagement with the plunger drive in the injector.
53 Citations
8 Claims
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1. A syringe holder for holding a syringe installed into a front loadable injector, the holder comprising:
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a section defining a cylindrical bore for receiving a cylindrical syringe therein, an open back end for communicating with an injector housing and an open front end for insertion of the syringe into the bore through said open front end and removal of the syringe from the bore through said open front end; the section further defining an internal annular recess in communication with said bore at a forward end of said holder, for receiving and retaining connecting structure of a syringe. - View Dependent Claims (2, 3)
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4. A method of installing a syringe in a front loadable injector, comprising:
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providing a syringe holder for holding a syringe installed into a front loadable injector, the holder comprising a section defining a cylindrical bore for receiving a cylindrical syringe therein, an open back end for communicating with an injector housing and an open front end for insertion of the syringe into the bore through said open front end and removal of the syringe from the bore through said open front end, and an internal annular recess in communication with said bore at a forward end of said holder, for receiving and retaining connecting structure of a syringe; installing said holder into a face plate having an aperture extending therethrough, installing said face plate to said front loadable injector by mounting said rear surface of said face plate adjacent to a housing of said injector; providing a front-loadable syringe having a cylindrical body; and installing said front-loadable syringe into said holder by insertion of said cylindrical body of said syringe through said open front end of said bore of said holder. - View Dependent Claims (5, 6, 7, 8)
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Specification