Injection systems with rotating needle carriage and methods
Injection systems and methods of using the same are described herein. Each injection system may include one, two, or more needles, with each needle being configured to move needle between an injection position and a retracted position to deliver an inoculant. The injection needles may rotate about a carriage axis that extends through the injection axis along which each needle moves when moving between their injection and retracted positions. The injection needles in systems that include two or more injection needles may be advanced from the retracted position to the injection position at the same or different times.
1. An injection system comprising:
a bird restraint apparatus operably connected to an injection unit, wherein the bird restraint apparatus is configured to restrain a bird in a selected position relative to the injection unit;
wherein the injection unit comprises:
a first needle assembly comprising a first injection needle and a first needle actuator operably connected to the first injection needle, wherein the first needle actuator is configured to move the first injection needle between an injection position and a retracted position along a first injection axis;
a needle carriage operably connected to a carriage actuator, wherein the first needle assembly is mounted on the needle carriage,
wherein the carriage actuator is configured to rotate the needle carriage about a carriage axis between a standby position and an actuation position, wherein a distal end of the first injection needle rotates about the carriage axis toward the bird restraint apparatus when the carriage actuator rotates the needle carriage from the standby position to the actuation position,
wherein the first injection needle is configured to contact a bird restrained in the bird restraint when the needle carriage moves into the actuation position, and wherein the first injection needle is positioned subcutaneously in a bird restrained in the bird restraint apparatus when the needle carriage is in its actuation position and the first injection needle is in the injection position,
wherein the carriage axis extends through the first injection axis when the needle carriage is in the standby position and when the needle carriage is in the actuation position,
and wherein a position of the carriage axis relative to the bird restraint apparatus is the same when the needle carriage is in the standby position and when the needle carriage is in the actuation position;
wherein the system comprises a controller operably connected to the carriage actuator and the first needle actuator, wherein the controller is configured to operate the carriage actuator to rotate the needle carriage about the carriage axis from the standby position to the actuation position.
2. A system according to claim 1 , wherein the injection unit comprises a needle guide, wherein the needle guide comprises a first guide passage configured to guide the first injection needle when the first injection needle moves between the injection position and the retracted position.
3. A system according to claim 2 , wherein the first guide passage comprises a distal opening, and wherein a distal end of the first injection needle passes through the distal opening when moving between the injection position and the retracted position.
4. A system according to claim 2 , wherein the needle guide is mounted on the needle carriage.
5. A system according to claim 1 , wherein the controller is operably connected to the first needle actuator, wherein the controller is configured to actuate the first needle actuator to move the first injection needle from its retracted position to its injection position.
6. A system according to claim 1 , wherein the injection system comprises a second needle assembly mounted on the needle carriage, wherein the second needle assembly comprises a second injection needle and a second needle actuator operably connected to the second injection needle, wherein the second needle actuator is configured to move the second injection needle between an injection position and a retracted position along a second injection axis;
wherein a distal end of the first injection needle is spaced apart from a distal end of the second injection needle when the first and second injection needles are in their injection positions by a distance of 1 mm or more.
7. A system according to claim 1 , wherein the injection system comprises a second needle assembly mounted on the needle carriage, wherein the second needle assembly comprises a second injection needle and a second needle actuator operably connected to the second injection needle, wherein the second needle actuator is configured to move the second injection needle between an injection position and a retracted position along a second injection axis, wherein the first injection axis and the second injection axis are not parallel to each other.
8. A system according to claim 7 , wherein the carriage axis extends through the second injection axis.
9. A method of positioning a bird in an injection system, the method comprising:
restraining a bird in a bird restraint apparatus, wherein the bird and the bird restraint apparatus are in a selected location proximate an injection unit, the injection unit comprising a needle assembly mounted on a needle carriage, the needle assembly comprising an injection needle and a needle actuator operably connected to the injection needle, wherein the needle actuator is configured to move the injection needle between an injection position and a retracted position along an injection axis;
rotating the needle carriage of the injection unit about a carriage axis from a standby position to an actuation position such that a distal end of the injection needle rotates about the carriage axis toward the bird while the needle carriage rotates from the standby position to the actuation position;
wherein the injection axis of the needle assembly intersects the bird in the bird restraint apparatus when the needle carriage is in the actuation position;
wherein the carriage axis extends through the injection axis when the needle carriage is in the standby position and the actuation position;
and wherein a position of the carriage axis relative to the bird restraint apparatus is the same when the needle carriage is in the standby position and when the needle carriage is in the actuation position.
10. A method according to claim 9 , the method comprising:
advancing the injection needle to the injection position after rotating the needle carriage of the injection unit about the carriage axis from the standby position to the actuation position; and
delivering a selected material to a first location in the bird through the injection needle after advancing the injection needle into the injection position.
11. A method according to claim 10 , wherein the method further comprises:
moving the injection needle from its injection position towards its retracted position after delivering the selected material; and
delivering sterilant onto a distal end of the injection needle after moving the injection needle from its injection position towards its retracted position.
12. A method according to claim 11 , wherein the sterilant is atomized before delivery onto the injection needle.
13. A method according to claim 11 , wherein the sterilant is delivered onto the injection needle after the injection needle is in its retracted position.