Cartridge apparatus for injecting fluids into bone
First Claim
Patent Images
1. A cartridge assembly for delivering a quantity of medication to bone marrow of a bone comprising:
- a fluid reservoir having a first end and a second end;
a hollow, bone penetrating needle engaged with the first end of the fluid reservoir;
a plunger assembly including a piston and a plunger shaft attached to the piston;
the piston slidably disposed in the fluid reservoir;
a portion of the plunger shaft extending from the second end of the fluid reservoir;
a drive connector attached to the second end of the fluid reservoir opposite from the bone penetrating needle; and
the drive connector operable to rotate the cartridge assembly in response to rotation of the drive connector by an associated drive housing;
where the cartridge assembly is configured to be removably coupled to a driver such that if the needle is disposed in a bone of a patient;
(i) the cartridge assembly can be removed from the driver, and (ii) the needle can be disengaged from the reservoir.
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Accused Products
Abstract
Apparatus for delivering a quantity of fluid to bone marrow of a bone or providing access to remove fluids from a target site is provided. The apparatus may include a driver, a plunger operating and cartridge assembly mechanism, a cartridge assembly having a fluid reservoir and a bone penetrating needle.
396 Citations
9 Claims
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1. A cartridge assembly for delivering a quantity of medication to bone marrow of a bone comprising:
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a fluid reservoir having a first end and a second end; a hollow, bone penetrating needle engaged with the first end of the fluid reservoir; a plunger assembly including a piston and a plunger shaft attached to the piston; the piston slidably disposed in the fluid reservoir; a portion of the plunger shaft extending from the second end of the fluid reservoir; a drive connector attached to the second end of the fluid reservoir opposite from the bone penetrating needle; and the drive connector operable to rotate the cartridge assembly in response to rotation of the drive connector by an associated drive housing; where the cartridge assembly is configured to be removably coupled to a driver such that if the needle is disposed in a bone of a patient;
(i) the cartridge assembly can be removed from the driver, and (ii) the needle can be disengaged from the reservoir. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A cartridge assembly for delivering a quantity of medication to bone marrow of a bone comprising:
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a fluid reservoir having a first end and a second end; a hollow, bone penetrating needle engaged with the first end of the fluid reservoir; a plunger assembly including a piston and a plunger shaft attached to the piston; the piston slidably disposed in the fluid reservoir; a portion of the plunger shaft extending from the second end of the fluid reservoir; a drive connector attached to the second end of the fluid reservoir opposite from the bone penetrating needle; the drive connector operable to rotate the cartridge assembly in response to rotation of the drive connector by an associated drive housing; a detachable fluid reservoir; a hub operable to releasably engage the hollow, bone penetrating needle with the first end of the detachable fluid reservoir; a first end and a second end; the second end of the hub having a threaded connection disposed adjacent thereto; the hollow, bone-penetrating needle attached to and extending from the first end of the hub; a recess formed in the piston; and the recess sized to receive the second end of the hub within the piston to allow disengagement of the first end of the fluid reservoir from the hub after the hollow, bone-penetrating needle has been inserted through portions of a bone and bone marrow proximate a target site.
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9. A cartridge assembly for delivering a quantity of medication to bone marrow of a bone comprising:
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a fluid reservoir having a first end and a second end; a hollow, bone penetrating needle engaged with the first end of the fluid reservoir; a plunger assembly including a piston and a plunger shaft attached to the piston; the piston slidably disposed in the fluid reservoir; a portion of the plunger shaft extending from the second end of the fluid reservoir; a drive connector attached to the second end of the fluid reservoir opposite from the bone penetrating needle; the drive connector operable to rotate the cartridge assembly in response to rotation of the drive connector by an associated drive housing; a detachable fluid reservoir; a hub operable to releasably engage the hollow, bone penetrating needle with the first end of the detachable fluid reservoir; a first end and a second end; the second end of the hub having a threaded connection disposed adjacent thereto; the hollow, bone-penetrating needle attached to and extending from the first end of the hub; and a luer fitting formed on the second end of the hub.
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Specification