Ocular Muscle Hook Assembly for Precise Strabismus Reattachment
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Solution Overview
Problem
Surgical correction of strabismus requires high spatial accuracy and precision in excising and reattaching ocular muscles, which is technically challenging and typically necessitates the skills of a qualified surgeon and an assistant to manage muscle and eye positioning during the procedure.
Innovation Solution
The development of a strabismus ocular surgical instrument (OSIN) that includes a support housing with a muscle hook holder and clamping foot to elevate and secure ocular muscles, featuring graduation markings for precise distance translation, a lock for maintaining position, and tools for reattachment via gluing, stapling, or suturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual muscle manipulation is used during strabismus surgery, then surgical precision can be achieved, but the procedure requires multiple operators and increased complexity
Solution Approach 1:
The surgical instrument is divided into separate functional modules: a muscle hook for elevating the muscle, a clamping foot for securing the muscle to the sclera, and a handle assembly for control. This segmentation allows a single operator to perform all muscle manipulation tasks independently, eliminating the need for multiple operators while maintaining surgical precision.
Solution Approach 2:
The muscle hook acts as an intermediary tool between the surgeon and the ocular muscle, providing precise control and elevation of the muscle tissue. The clamping foot serves as another intermediary mechanism that securely attaches the muscle to the sclera. These intermediary components enable a single operator to perform tasks that previously required coordination between multiple surgeons.
2Manufacturing precision
If traditional muscle manipulation techniques are used, then surgical accuracy can be maintained, but operational difficulty and time consumption increase
Solution Approach 1:
The muscle hook and clamping foot are merged into a single integrated instrument assembly that can be manipulated by one operator. The handle assembly combines control mechanisms for both the muscle hook elevation and the clamping foot deployment, allowing all muscle manipulation functions to be performed through a single unified tool rather than requiring multiple separate instruments and operators.
Solution Approach 2:
The instrument incorporates dynamic control mechanisms including a movable muscle hook that can be positioned at various heights along the sclera, and a clamping foot that can be deployed and adjusted. The handle assembly includes a movable component that allows real-time adjustment of the muscle hook position and clamping foot engagement, enabling precise and adaptable muscle manipulation with simplified operation.
3Device complexity
If single operator performs all muscle manipulation, then device complexity is reduced, but control precision and stability may be compromised
Solution Approach 1:
The muscle hook is designed with pre-configured engagement mechanisms that allow it to be positioned and secured on the sclera before the actual muscle resection or reattachment procedure begins. The clamping foot is pre-positioned to engage with the sclera at the desired location. This preliminary positioning and securing of the instrument components provides stable and precise control throughout the surgical procedure, even when operated by a single person.
Solution Approach 2:
The instrument replaces manual mechanical manipulation with a designed mechanical system that incorporates guided movement and predetermined engagement paths. The muscle hook follows a predetermined trajectory along the sclera, and the clamping foot engages through a designed mechanical interaction with the scleral surface. This mechanical substitution provides inherent precision and stability without requiring multiple operators to coordinate and control each movement.
Data Source
Figure 1A~1C
Figure 1D~1F
Figure 1G~1H
AI summary
Apparatus for performing an ocular surgery, the apparatus comprising: a support housing having a bottom configured to be positioned on the sclera of an eye during performance of an ocular surgery; a muscle hook holder connected to the support housing and configured to hold an ocular muscle hook so that the ocular muscle hook is translatable to elevate an ocular muscle away from the eye during performance of the surgery; and a set of graduation markings on the support housing useable to determine a distance that the ocular muscle hook is translated to elevate the ocular muscle.