Offset Surgical Guide with Locking Sleeve for Bone Placement
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Solution Overview
Problem
Current surgical procedures face challenges in accurately guiding bone implants to desired locations and orientations, especially in complex anatomies like the shoulder joint, due to difficulties in accessing small, irregularly shaped bones and the risk of fracturing the bone edge during implant placement, particularly in minimally invasive surgeries.
Innovation Solution
A surgical guide system comprising a sleeve with a removably insertable guide and a locking mechanism, including a trocar, that allows for precise positioning and orientation of surgical devices relative to the bone, with a distal tip laterally offset to prevent edge damage, and a wire guide with shape-memory materials for stabilizing offset drilling in bone.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a bone implant is driven into a location near the edge of the bone, then the implant can be placed in small or irregularly shaped bones, but the implant may cause the edge of the bone to fracture or skive off the edge
Solution Approach 1:
A guide device is introduced as an intermediary tool between the surgical instrument and the bone. The guide device includes a guide element that engages with the bone edge and a tracking element that indicates the safe insertion path, allowing the surgeon to place the implant near the edge without directly controlling the insertion trajectory, thus preventing bone edge fracture while maintaining implant placement flexibility
2Measurement precision
If imaging techniques such as X-rays are used for positional determination, then accurate location and orientation of the implant can be determined, but the procedure requires temporary cessation and may need to be performed multiple times, increasing the risk related to X-ray use
Solution Approach 1:
The guide device incorporates self-aligning features and real-time visual feedback through the tracking element that allows the surgical instrument to automatically orient itself relative to the bone anatomy. This eliminates the need for external imaging interventions, as the guide device itself provides continuous positional and orientational information throughout the procedure, maintaining both accuracy and procedural continuity
3Object-affected harmful factors
If minimally invasive surgery is performed, then patient trauma is reduced, but accurately locating the appropriate location and orientation for the implant within the bone becomes more difficult
Solution Approach 1:
The guide device serves as a mediator that bridges the limited visual access of minimally invasive surgery with the need for precise implant placement. The guide element can be inserted through small incisions while the tracking element provides real-time positional information, enabling accurate implant location and orientation without requiring extensive surgical exposure
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables accurate and safe placement of surgical devices at desired distances and orientations from bone edges, reducing the risk of fracture and improving precision in complex anatomical sites, even in minimally invasive procedures.
Implementation Method 1
The distal portion can be formed from a shape memory material and/or can have an S-shape
Data Source
AI summary
Devices, systems, and methods are generally provided for guiding surgical devices into a desired location and orientation in a bone. In general, the devices can include an elongate guide, a sleeve having an inner lumen therethrough for seating the guide, and a locking mechanism configured to lock a position of the guide with respect to the sleeve. The guide can have a distal, bone-engaging portion that can be laterally offset from an intermediate portion of the guide by a predetermined distance and that can extend distally beyond the sleeve to contact a bony structure. The guide can thus orient and stabilize the sleeve at the predetermined distance from the bony structure to provide for the delivery of one or more surgical devices through the sleeve and into the bone at a desired location and orientation, without requiring a surgeon to actually view the surgical site.