Angled Surgical Forceps for Bendable Allograft Alignment
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Solution Overview
Problem
Surgical instruments lack the ability to effectively guide fixation of bendable osteochondral allografts, allowing proper alignment for trimming and handling without interference from wires or screws, which complicates surgery.
Innovation Solution
A surgical clamp system with pivotable shanks and clamping jaws that include angled surfaces and a tubular member for guidewire insertion, allowing secure alignment and trimming of bendable allografts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If surgical instruments are used to manipulate bendable allografts, then basic clamping function is provided, but the instruments lack the ability to effectively guide fixation and allow proper alignment for trimming and handling
Solution Approach 1:
The patent combines multiple functions (alignment, clamping, guidewire integration, and trimming guidance) into a single integrated forceps device. The jaws include integrated guidewire openings and angled surfaces that provide both clamping and alignment functions simultaneously, eliminating the need for separate alignment tools and wires.
Solution Approach 2:
The forceps device is designed to perform multiple functions: clamping the allograft, providing alignment through angled jaw surfaces, guiding fixation via integrated guidewire openings, and facilitating trimming through precise positioning. This multi-functional design replaces multiple separate instruments with a single universal tool.
2Reliability
If wires or screws are inserted to secure the allograft in its bent shape, then fixation is achieved, but they interfere with trimming and handling
Solution Approach 1:
The forceps device provides preliminary alignment and positioning of the allograft before fixation is applied. The angled jaw surfaces establish the correct orientation and bent shape in advance, allowing the allograft to be secured without requiring interfering wires or screws for alignment purposes.
Solution Approach 2:
The integrated guidewire openings in the jaws extract the need for separate wires or screws by providing built-in guidance pathways. The guidewire passes through the forceps jaws themselves, eliminating the need for external fixation elements that would interfere with subsequent trimming and handling operations.
3Device complexity
If traditional clamping is used without integrated guidance features, then simple holding is achieved, but effective guidance for fixation and alignment is lost
Solution Approach 1:
The jaw surfaces feature localized angled contact surfaces and specific opening configurations that provide precise alignment guidance at the critical clamping interface. These localized geometric features ensure accurate positioning and orientation of the allograft during fixation without requiring complex overall instrument design.
Data Source
AI summary
A Surgical forceps device comprising a pair of shanks and a clamping jaw portion, the clamping jaw surfaces set at an angle that produces a desired angular position for grasping a bendable osteochondral allograft.