Robotic Surgical Kinematic Mounting for Sterile Component Detachment

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Solution Overview

Problem

Conventional mounting assemblies in robotic surgical systems restrict the movement of surgical components, requiring sterilization or draping, and do not allow detachment of sterilized components without breaking the sterile barrier, limiting system effectiveness.

Innovation Solution

A kinematic mounting assembly with elongated mount surfaces and couplers that constrain movement between surgical components, allowing detachment without breaking the sterile barrier through a disposable interface component.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional mounting assemblies are used to restrict movement between surgical components, then the surgical components can be securely mounted, but the sterilized component cannot be detached from the draped component without breaking the sterile barrier

Engineering Contradiction:
Improvesterile barrier integrityVSAvoidcomponent detachability
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The mounting assembly is divided into three distinct segments: a first mount component attached to the sterilized surgical component, a second mount component attached to the draped surgical component, and an interface component connecting them. This segmentation allows the sterile side (first mount component) to remain sealed while the non-sterile side (second mount component) can be detached and replaced without compromising the sterile barrier.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The interface component acts as an intermediary between the sterilized and draped components. It includes a sterile barrier portion that maintains sterility on one side and a non-sterile coupling portion on the other side, enabling detachment of non-sterile components while preserving the sterile environment.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If surgical components are sterilized, then they can be used in a sterile field, but they cannot be replaced during the surgical procedure

Engineering Contradiction:
ImprovesterilityVSAvoidcomponent replacement capability
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

By segmenting the mounting assembly into sterile and non-sterile portions, the system allows the sterilized first surgical component to remain in place while enabling replacement of the second non-sterile component during the procedure, thus maintaining both sterility and replaceability.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The interface component and second mount component are designed as disposable or replaceable elements that can be exchanged during surgery without requiring sterilization, allowing for component replacement while maintaining the sterility of the permanent sterilized components.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

3Stability of the object's composition

If kinematic mounting assemblies are used to constrain movement, then the surgical components are securely positioned, but the system flexibility is reduced

Engineering Contradiction:
Improvecomponent positioning stabilityVSAvoidsystem flexibility
Core Design Contradiction:
Stability of the object's compositionVSAdaptability or versatility

Solution Approach 1:

The mounting assembly transitions from a static rigid connection to a dynamic system where the interface component can be detached and reattached. The kinematic couplers provide stable positioning when connected but allow for controlled detachment when needed, enabling both stability during operation and flexibility for component replacement.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS20250268688A1Robotic Surgical System, Kinematic Mounting Assembly, and Interface Component
Publication Date: 2025.08.28 MAKO SURGICAL CORP
  • US20250268688A1 patent drawing
  • US20250268688A1 patent drawing
  • US20250268688A1 patent drawing

AI summary

A kinematic mounting assembly includes a first mount component having a first and second elongated mount surfaces spaced relative to one another. The kinematic mounting assembly also includes a second mount component having a third and fourth elongated mount surfaces spaced relative to one another. The kinematic mounting assembly further includes an interface component disposed between the first and second mount components. The interface component includes an interface body and a first elongated kinematic coupler and a second elongated kinematic coupler coupled to the interface body. The first elongated kinematic coupler is engageable with the first and third elongated mount surfaces. The second elongated kinematic coupler is engageable with the second and fourth elongated mount surfaces.