Tool-Free Retention Assemblies for Implantable Lead Connectors

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing implantable electrical stimulation systems face challenges in securely attaching leads or lead extensions to connectors without the need for additional tools, particularly during medical procedures where tools may not be readily available, and there is a need for retention assemblies that can facilitate quick and secure connections.

Innovation Solution

The development of retention assemblies that include threaded members, split collets, lockable latches, split shell connections, deformable members, and sliding locks to securely attach leads or lead extensions to connectors without requiring supplementary tools, such as wrenches, by utilizing threaded posts, split collets, lockable latches, snap-fit closures, and sliding locks to ensure secure and tool-free connections.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If traditional attachment methods are used for securing leads to connectors, then secure connection is achieved, but additional tools (such as wrenches) are required which are not readily available during medical procedures

Engineering Contradiction:

Improvetool-free attachmentVSAvoidconnection security

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The retention assembly is designed to be self-contained with all necessary attachment components integrated into the connector housing. The system performs its own securing function without requiring external tools, with the retention member and fastening mechanism working together to automatically secure the lead to the connector through manual manipulation only

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The retention assembly merges multiple functions into a single integrated structure: the retention member for securing, the fastening mechanism for locking, and the release mechanism for detachment all work together within one compact assembly that attaches directly to the connector, eliminating the need for separate tools

Inventive Principle:

Principle #5Merging (Combining)

2Device complexity

If existing retention mechanisms are used, then secure attachment is achieved, but the attachment process requires supplementary tools that complicate the procedure

Engineering Contradiction:

Improvesimplified attachment processVSAvoidattachment time

Core Design Contradiction:

Device complexityVSLoss of time

Solution Approach 1:

The retention assembly is segmented into distinct functional components: a retention member for initial securing, a fastening mechanism for locking, and a release mechanism for detachment. This segmentation allows each component to perform its specific function efficiently without requiring complex tool-assisted operations

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The retention assembly acts as an intermediary between the lead and connector, providing a manual fastening system that bridges the gap between simple attachment and secure connection without requiring external tools. The integrated fastening mechanism mediates the connection process through direct manual manipulation

Inventive Principle:

Principle #24Intermediary (Mediator)

3Ease of operation

If tool-based attachment methods are used, then reliable connection is achieved, but the need for additional tools during medical procedures creates practical difficulties

Engineering Contradiction:

Improvemanual attachment capabilityVSAvoidintegrated retention mechanism

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The retention assembly provides multi-functionality by combining securing, fastening, and release capabilities in a single device that works with standard connectors. The mechanism is universally applicable to various lead and connector configurations while maintaining manual operation capability

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The retention member, fastening mechanism, and release mechanism are nested within the connector housing structure. The retention assembly is contained within the connector, with components arranged in a compact nested configuration that maintains functionality while minimizing space requirements

Inventive Principle:

Principle #7Nested doll (Nesting)

Data Source

PatentUS8301255B2Retention assemblies for implantable electric stimulation systems and methods of making and using

Publication Date: 2012.10.30 BOSTON SCI NEUROMODULATION CORP

AI summary

A connector assembly includes a lead or a lead extension, a connector, and a retention assembly disposed in the connector. The connector includes a connector housing defining a port at a distal end of the connector, and a plurality of connector contacts disposed in the connector housing. The port is configured and arranged for receiving a proximal end of the lead or the lead extension. The connector contacts are configured and arranged to couple to at least one terminal disposed on the proximal end of the lead or the lead extension. The retention assembly includes a retention mechanism that can be engaged and reversibly disengaged without the use of tools beyond conventional operating-room surgical instruments.