Bone fixation tool
First Claim
1. A tool for stabilizing a fractured bone, comprising:
- a barrel having a proximal end and a distal end, the distal end of the barrel including an opening;
a cartridge supported in the distal end of the barrel, the cartridge including a first elongate semi-cylindrical body having a first outer surface sized to fit within the distal end of the barrel and a first inner surface at least partly defining a passageway for receiving a bone pin configured to be driven into the fractured bone to stabilize the fractured bone, the passageway being sized to accommodate axial movement of the bone pin through the passageway while limiting radial movement of the bone pin in the passageway; and
a piston having a proximal end and a distal end and is configured to translate axially relative to the barrel, the proximal end of the piston including a head and the distal end of the piston including a needle formation provided on a support member, the support member having a second elongate semi-cylindrical body having a second outer surface and a second inner surface such that the second elongate semi-cylindrical body is complementary to the first elongate semi-cylindrical body of the cartridge to fit within the distal end of the barrel, wherein, when the first and second inner surfaces directly oppose each other, the first and second outer surfaces define a shape that corresponds to the distal end of the barrel, and wherein the needle formation is sized for receipt within the passageway of the cartridge, the needle formation configured to apply sufficient force to the bone pin to drive the bone pin axially from the barrel and into the fractured bone.
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Accused Products
Abstract
Various embodiments of the present disclosure include a tool for stabilizing a fractured bone. The tool comprises a barrel having a proximal end and a distal end. The distal end of the barrel includes a passageway for receiving a bone pin configured to be driven into the fractured bone to stabilize the fractured bone. The passageway is sized to accommodate axial movement of the bone pin through the passageway while limiting radial movement of the bone pin in the passageway. The tool further comprises a piston having a proximal end and a distal end and configured to translate axially relative to the barrel. The proximal end of the piston includes a head and the distal end of the piston includes a needle formation, the needle formation being sized for receipt within the passageway of the barrel to drive the bone pin axially from the barrel and into the fractured bone.
219 Citations
19 Claims
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1. A tool for stabilizing a fractured bone, comprising:
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a barrel having a proximal end and a distal end, the distal end of the barrel including an opening; a cartridge supported in the distal end of the barrel, the cartridge including a first elongate semi-cylindrical body having a first outer surface sized to fit within the distal end of the barrel and a first inner surface at least partly defining a passageway for receiving a bone pin configured to be driven into the fractured bone to stabilize the fractured bone, the passageway being sized to accommodate axial movement of the bone pin through the passageway while limiting radial movement of the bone pin in the passageway; and a piston having a proximal end and a distal end and is configured to translate axially relative to the barrel, the proximal end of the piston including a head and the distal end of the piston including a needle formation provided on a support member, the support member having a second elongate semi-cylindrical body having a second outer surface and a second inner surface such that the second elongate semi-cylindrical body is complementary to the first elongate semi-cylindrical body of the cartridge to fit within the distal end of the barrel, wherein, when the first and second inner surfaces directly oppose each other, the first and second outer surfaces define a shape that corresponds to the distal end of the barrel, and wherein the needle formation is sized for receipt within the passageway of the cartridge, the needle formation configured to apply sufficient force to the bone pin to drive the bone pin axially from the barrel and into the fractured bone. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A tool for stabilizing a fractured bone, comprising:
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a barrel having a proximal end and a distal end, the barrel including a piston housing located at the proximal end and a tubular portion extending from the piston housing and terminating at a distal end of the barrel; a cartridge located at the distal end of the barrel within the tubular portion, the cartridge including a first elongate semi-cylindrical body having a first outer surface sized to fit within the distal end of the tubular portion and a first inner surface at least partly defining a passageway for receiving a bone pin configured to be driven into the fractured bone to stabilize the fractured bone, the passageway being sized to accommodate axial movement of the bone pin through the passageway while limiting radial movement of the bone pin in the passageway; a piston having a proximal end and a distal end and is configured to translate axially relative to the barrel, the proximal end of the piston including a head and the distal end of the piston including a needle formation provided on a support member, the support member having a second elongate semi-cylindrical body having a second outer surface and a second inner surface such that the second elongate semi-cylindrical body is complementary to the first elongate semi-cylindrical body of the cartridge to fit within the distal end of the barrel, wherein, when the first and second inner surfaces directly oppose each other, the first and second outer surfaces define a shape that corresponds to the distal end of the barrel, and wherein the needle formation is sized for receipt within the passageway of the cartridge, the needle formation configured to apply sufficient force to the bone pin to drive the bone pin axially from the barrel and into the fractured bone; a pressurized gas source for supplying a pneumatic force to the head of the piston to axially translate the piston relative to the barrel; and a trigger assembly for releasing the piston. - View Dependent Claims (19)
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Specification