Incremental varus/valgus and flexion/extension measuring instrument
First Claim
Patent Images
1. An alignment and flexibility measuring instrument comprising:
- a caliper having pin apertures formed therein for mounting on surgical pins in a first skeletal member;
an adaptor having pin apertures formed in a first adaptor portion for mounting on the surgical pins, and having adaptor pins extending from a second adaptor portion for engagement with the caliper pin apertures; and
a rod connected to the caliper for indicating alignment of a second skeletal member relative to the first skeletal member when the caliper is mounted on the surgical pins, and for measuring flexibility of the second skeletal member relative to the first skeletal member when the caliper is mounted on the adaptor pins.
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Abstract
A surgical measuring instrument includes a caliper having pin apertures formed therein for mounting on surgical pins in a first skeletal member. An adaptor includes pin apertures on a first portion for mounting on the surgical pins when the caliper is removed, and includes adaptor pins extending from a second portion for engagement with the caliper. A rod is connected to the caliper for indicating alignment and flexibility of a second skeletal member relative to the first skeletal member.
221 Citations
21 Claims
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1. An alignment and flexibility measuring instrument comprising:
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a caliper having pin apertures formed therein for mounting on surgical pins in a first skeletal member;
an adaptor having pin apertures formed in a first adaptor portion for mounting on the surgical pins, and having adaptor pins extending from a second adaptor portion for engagement with the caliper pin apertures; and
a rod connected to the caliper for indicating alignment of a second skeletal member relative to the first skeletal member when the caliper is mounted on the surgical pins, and for measuring flexibility of the second skeletal member relative to the first skeletal member when the caliper is mounted on the adaptor pins. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A knee surgery instrument comprising:
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an adaptor having pin apertures formed therein for receiving a plurality of surgical pins in a first skeletal member, and having adaptor pins extending from the adaptor for receiving a caliper;
the caliper having pin apertures formed therein for mounting on the surgical pins and for mounting on the adaptor pins; and
a rod mounted on the caliper for indicating alignment and flexibility of a second skeletal member relative to the first skeletal member. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A method of measuring alignment and flexibility of a skeletal joint comprising the steps of:
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inserting surgical pins in a first skeletal member;
mounting a caliper on the surgical pins, the caliper including a rod connected thereto for measuring alignment of a second skeletal member relative to the first skeletal member;
removing the rod and caliper;
mounting an adaptor on the surgical pins, the adaptor including adaptor pins extending therefrom; and
mounting the caliper on the adaptor, the caliper including the rod for measuring flexibility of the second skeletal member relative to the first skeletal member. - View Dependent Claims (18, 19)
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20. A method of measuring alignment and flexion of a skeletal joint comprising the steps of:
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inserting surgical pins in a first skeletal member;
mounting a caliper on the surgical pins, the caliper including a rod connected thereto for measuring alignment of a second skeletal member relative to the first skeletal member;
removing the rod and caliper;
resecting at least one of the skeletal members;
again mounting the caliper on the surgical pins, the caliper including the rod for measuring alignment of the second skeletal member relative to the first skeletal member;
again removing the rod and caliper;
mounting an adaptor on the surgical pins, the adaptor including adaptor pins extending therefrom; and
mounting the caliper on the adaptor, the caliper including the rod for measuring flexibility of the second skeletal member relative to the first skeletal member.
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21. A surgical measuring instrument comprising:
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an adaptor having a first portion and a second portion, the first portion including a plurality of pin receiving apertures formed therein, the second portion being formed at a right angular relationship with the first portion and having a plurality of adaptor pins extending therefrom;
a caliper having a scale thereon, the caliper including a plurality of adaptor pin apertures formed therein;
a pointer pivotally mounted on the caliper for bidirectional movement relative to the scale; and
an alignment rod connected to the pointer for movement therewith.
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Specification