Glenoid implant surgery using patient specific instrumentation
First Claim
1. A pin placement instrument for placing at least one pin in a scapula comprising:
- an anatomical interface with a hook-like portion being opened laterally relative to the instrument to receive a bone therein in a predetermined position, the hook-like portion having a first surface modeled specifically to match an upper surface of the scapula of a patient, and a second surface modeled specifically to match an under surface of the scapula opposite the upper surface in a longitudinal direction of drilling whereby the hook-like portion is configured to hook onto both sides of a portion of the scapula;
a drill guide connected to the anatomical interface and defining at least one guide slot in the instrument and configured to be positioned on the upper surface of the scapula, the at least one guide slot having a lateral opening over its full length in the drill guide to allow lateral withdrawal of the instrument in a lateral direction from hooking engagement with the scapula when the at least one pin is placed in the scapula and is passing through the lateral opening; and
at least one bushing removably placed in said at least one guide slot, the at least one bushing defining a throughbore aligned with the at least one guide slot and adapted to receive the at least one pin extending longitudinally in the instrument when the at least one bushing is in the at least one guide slot for pin placement, the at least one bushing having an axis of the throughbore defining the longitudinal direction of drilling.
3 Assignments
0 Petitions
Accused Products
Abstract
A pin placement instrument for placing a pin in a bone comprises an anatomical interface with a hook-like portion being opened in a lateral direction of the instrument to receive a bone therein in a planned position. A drill guide is connected to the anatomical interface and defining at least one guide slot in a longitudinal direction of the instrument. The guide slot has a lateral opening over its full length in the drill guide to allow lateral withdrawal of the instrument in said lateral direction with the pin placed in the bone passing through the lateral opening. A bushing is removably placed in said guide slot via said longitudinal direction in a planned fit, the bushing defining a throughbore aligned with the guide slot and adapted to receive the pin extending in said longitudinal direction when the bushing is in the guide slot for pin placement.
320 Citations
27 Claims
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1. A pin placement instrument for placing at least one pin in a scapula comprising:
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an anatomical interface with a hook-like portion being opened laterally relative to the instrument to receive a bone therein in a predetermined position, the hook-like portion having a first surface modeled specifically to match an upper surface of the scapula of a patient, and a second surface modeled specifically to match an under surface of the scapula opposite the upper surface in a longitudinal direction of drilling whereby the hook-like portion is configured to hook onto both sides of a portion of the scapula; a drill guide connected to the anatomical interface and defining at least one guide slot in the instrument and configured to be positioned on the upper surface of the scapula, the at least one guide slot having a lateral opening over its full length in the drill guide to allow lateral withdrawal of the instrument in a lateral direction from hooking engagement with the scapula when the at least one pin is placed in the scapula and is passing through the lateral opening; and at least one bushing removably placed in said at least one guide slot, the at least one bushing defining a throughbore aligned with the at least one guide slot and adapted to receive the at least one pin extending longitudinally in the instrument when the at least one bushing is in the at least one guide slot for pin placement, the at least one bushing having an axis of the throughbore defining the longitudinal direction of drilling. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A pin placement instrument for placing at least one pin in a scapula comprising:
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an anatomical interface with a hook-like portion being opened laterally relative to the instrument to receive a bone therein in a predetermined position, the hook-like portion having a first surface modeled specifically to match an upper surface of the scapula of a patient and a second surface modeled specifically to match an under surface of the scapula, the second surface opposite the first surface in a longitudinal direction of drilling, whereby the hook-like portion has a C-shape and is configured to hook onto both sides of a portion of the scapula; a drill guide connected to the anatomical interface and defining at least one guide slot in the instrument and configured to be positioned on the upper surface of the scapula, the at least one guide slot having a lateral opening over its full length in the drill guide to allow lateral withdrawal of the instrument in a lateral direction from hooking engagement with the scapula when the at least one pin is placed in the scapula and is passing through the lateral opening; and at least one bushing removably placed in said at least one guide slot, the at least one bushing defining a throughbore aligned with the at least one guide slot and adapted to receive the at least one pin extending in the instrument when the at least one bushing is in the at least one guide slot for pin placement, the at least one bushing having an axis of the throughbore defining the longitudinal direction of drilling. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A pin placement instrument for placing at least one pin in a scapula comprising:
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an anatomical interface with a hook-like portion being opened laterally relative to the instrument to receive a bone therein in a predetermined position, the hook-like portion having a first surface modeled specifically to match an upper surface of the scapula of a patient and a second surface modeled specifically to match an under surface of the scapula, the second surface opposite the first surface in a longitudinal direction of drilling whereby the hook-like portion has a C-shape and is configured to hook onto both sides of a portion of the scapula; a drill guide connected to the anatomical interface and defining at least one guide slot in the instrument and configured to be positioned on the upper surface of the scapula, the at least one guide slot having a lateral opening over its full length in the drill guide to allow lateral withdrawal of the instrument in a lateral direction from hooking engagement with the scapula when the at least one pin is placed in the scapula and is passing through the lateral opening; and at least one bushing removably placed in said guide slot, the bushing defining a throughbore aligned with the guide slot and adapted to receive the at least one pin extending longitudinally in the instrument when the bushing is in the guide slot for pin placement. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27)
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Specification