Loop-in-loop suture anchor splice for stable bone fixation

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Solution Overview

Problem

Conventional knot-tying methods for suture anchors are time-consuming and prone to unraveling, causing irritation and chronic injury in joint surgeries, necessitating a more reliable and efficient fixation method for securing tissue or biological bodies to a bone mass.

Innovation Solution

A loop-in-loop suture construct system where a substrate with suture material forms adjustable loops to secure a target body to a bone mass, minimizing knot irritation and unraveling, by passing the suture through a substrate, forming loops, and deploying them to achieve stable fixation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional knot-tying methods are used to secure suture to bone mass, then fixation is achieved, but the process is time-consuming and knots may unravel causing irritation and chronic injury

Engineering Contradiction:
Improvefixation reliabilityVSAvoidsurgical time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The suture is pre-configured with loops and splices before insertion into the bone. The anchor device includes pre-formed loops that can be easily engaged with tissue, eliminating the need for time-consuming knot-tying during surgery. The splice structure is prepared in advance to allow quick deployment and secure fixation.

Inventive Principle:
Principle #10Preliminary action

2Reliability

If conventional knots are tied to secure tissue, then fixation is achieved, but knots may unravel prior to healing

Engineering Contradiction:
Improvefixation stabilityVSAvoidknot unraveling and irritation
Core Design Contradiction:
ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The invention extracts the harmful knot-tying step from the fixation process. Instead of using conventional knots that can unravel and irritate tissue, the design uses a splice structure with loops that secure tissue through a different mechanism. The harmful element (knots) is removed while maintaining fixation functionality.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The splice structure acts as an intermediary between the suture and the tissue/bone. Rather than relying on knots to secure everything, the splice provides a intermediate securing mechanism that distributes force and prevents unraveling while minimizing tissue irritation.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Ease of manufacture

If conventional suture anchors with knot-tying are used, then tissue fixation is achieved, but knot stacks irritate surrounding biological bodies and cause chronic injury

Engineering Contradiction:
Improvefixation simplicityVSAvoidtissue irritation and chronic injury
Core Design Contradiction:
Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The invention removes the harmful knot stack from the system. By using a pre-configured splice structure with loops, the design eliminates the need for multiple knot layers that irritate surrounding tissue. The harmful factor (knot stacks) is extracted while maintaining the essential fixation function.

Inventive Principle:
Principle #2Taking out (Extraction)

Data Source

PatentUS11129607B2Anchored loop-in-loop suture anchor
Publication Date: 2021.09.28 CONMED CORP
  • US11129607B2 patent drawing
  • US11129607B2 patent drawing
  • US11129607B2 patent drawing

AI summary

A system and method for securing a target body to a bone mass with a loop-in-loop suture anchor. The system generally includes suture material passing through a substrate (e.g., suture anchor). The suture material includes a splice that allows the suture material to be passed through the splice and around a target body, ultimately creating three loops in the suture material. By tensioning the loops and/or ends of the suture material, the loops bring the target body into a desired position relative to the bone mass and secure it in that position.