Surgical rongeur
First Claim
Patent Images
1. A rongeur for cutting bone or cartilage, comprising:
- a shaft terminating in a foot plate;
a carrier member in slidable relationship to said shaft, said carrier member having a leading end, a trailing end opposite said leading end, and an open interior, said leading end having an opening in communication with said open interior;
a tubular member configured to be removably inserted at least in part into said open interior of said carrier, said tubular member having an open end with a cutting edge adapted to contact said foot plate and cut pieces of bone or cartilage, said tubular member having a storage area proximate said cutting edge in communication with said open end, said storage area configured to collect and store at least one cut piece of bone or cartilage, said shaft being in slidable relationship with said carrier member without passing through said tubular member; and
a mechanism for providing reciprocal motion of said carrier member and said shaft relative to one another.
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Abstract
An improved multi-bite bone cutting rongeur with an ultrathin foot plate and a disposable cutting element and storage chamber unit is disclosed. The present invention has an integrated cutting element and storage chamber unit that is truly disposable, rather than merely replaceable. The present invention requires the use of no tools or special assembly. The chamber is simply placed onto the shaft whereby it is immediately locked into place by the use of the instrument.
34 Citations
20 Claims
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1. A rongeur for cutting bone or cartilage, comprising:
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a shaft terminating in a foot plate;
a carrier member in slidable relationship to said shaft, said carrier member having a leading end, a trailing end opposite said leading end, and an open interior, said leading end having an opening in communication with said open interior;
a tubular member configured to be removably inserted at least in part into said open interior of said carrier, said tubular member having an open end with a cutting edge adapted to contact said foot plate and cut pieces of bone or cartilage, said tubular member having a storage area proximate said cutting edge in communication with said open end, said storage area configured to collect and store at least one cut piece of bone or cartilage, said shaft being in slidable relationship with said carrier member without passing through said tubular member; and
a mechanism for providing reciprocal motion of said carrier member and said shaft relative to one another. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for cutting bone or cartilage, the method comprising the steps of:
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providing a rongeur having a shaft with a mid-longitudinal axis, a foot plate extending from the shaft, and a storage member in moveable relationship to the shaft, the storage member having a cutting edge and a storage area adapted to store multiple cuts of bone or cartilage;
positioning the rongeur at a site where the bone or cartilage is to be cut;
cutting bone or cartilage with the rongeur to produce multiple cut pieces of bone or cartilage;
storing the cut pieces of bone or cartilage in the storage area of the storage member;
moving the storage member away from the mid-longitudinal axis of the shaft in a direction generally radial to the mid-longitudinal axis while the cut pieces of bone or cartilage are still in the storage area; and
then removing the cut pieces of bone or cartilage from the storage area of the storage member. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification