Intraosseous needle
First Claim
1. An intraosseous needle, comprising:
- a threaded shaft having first and second opposing ends and a passageway extending from the first end toward the second end;
boring means for initiating penetration of said shaft into bone, said boring means formed as part of said second end; and
wherein said shaft has at least one opening proximal to the second end and in communication with the passageway;
wherein said boring means is generally conical with a pointed tip;
wherein said boring means is solid and has at least two cutting edges;
wherein said at least one opening is a side port located behind said boring means; and
wherein said boring means has a pair of concave indentations which define said at least two cutting edges.
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Accused Products
Abstract
An intraosseous needle having a threaded shaft with a passageway extending substantially therethrough, a solid and pointed tip at one end thereof, the tip having a plurality of cutting edges which facilitate boring through a bone. The shaft also includes two side ports in communication with the passageway to allow fluids to pass through the needle into the interior of the bone after successful insertion thereof. There is a hub at the opposite end of the shaft, whereby the needle is adapted to coupled with an appropriate gripping device. A handle is provided in the shape of a ball knob and is adapted to telescopically and grippingly receive the hub of the needle. The hub and handle are both equipped with mutually engaging torque-transmitting surfaces.
349 Citations
18 Claims
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1. An intraosseous needle, comprising:
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a threaded shaft having first and second opposing ends and a passageway extending from the first end toward the second end; boring means for initiating penetration of said shaft into bone, said boring means formed as part of said second end; and wherein said shaft has at least one opening proximal to the second end and in communication with the passageway; wherein said boring means is generally conical with a pointed tip; wherein said boring means is solid and has at least two cutting edges; wherein said at least one opening is a side port located behind said boring means; and wherein said boring means has a pair of concave indentations which define said at least two cutting edges. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An intraosseous needle, comprising:
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a shaft having a plurality of thread portions, first and second opposing ends and a passageway extending from said first end toward said second end, said second end having a pointed tip and a plurality of cutting edges for initiating penetration of said shaft into bone; wherein said shaft has at least one opening proximal to said second end and in communication with said passageway; and wherein said threads define a helical ridgeline which coincides at a point with one of said cutting edges, said one of said cutting edges terminating at said point. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. An intraosseous needle, comprising:
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a shaft having a plurality of threads, first and second opposing ends and a passageway extending from said first end toward said second end, wherein said threads have a thread angle of approximately 45° and
define a helical ridgeline, and said second end formed in the shape of a three-sided pyramid having a pointed tip and three edges for initiating penetration of said shaft into bone;wherein said helical ridgeline coincides at a point with a first one of said three edges to initiate engagement of said threads with the bone, said first one of said three edges terminating at said point; and wherein said shaft has a first side port and a second side port proximal to said second end and in communication with said passageway, said first side port axially aligned with a second one of said three edges of said three-sided pyramid and located between the first two adjacent said threads that are uninterupted by said second one of said three edges, said second side port located between two adjacent said threads and situated at an angle of approximately 270°
from said first side port about an axis defined by said shaft.
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Specification