Compact Jig Holding Device for Surgical Instruments

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Solution Overview

Problem

Conventional jig holding apparatuses for surgical instruments like endoscopes face challenges in providing linear motion without increasing the size of the holding mechanism, which is essential for efficient surgical operations while maintaining a clear workspace.

Innovation Solution

A jig holding apparatus with a detachable holding mechanism that incorporates a linear motion driving section and a rotation driving section, allowing for linear and rotational movement of the jig without the need for additional space, utilizing ultrasonic or electromagnetic motors to reduce the overall size and weight.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If an actuator or brake mechanism is provided on the holding mechanism to cause the jig to move and be held, then the jig can be positioned and held during surgery, but the size of the holding mechanism will be increased

Engineering Contradiction:

Improvejig positioning capabilityVSAvoidholding mechanism size

Core Design Contradiction:

Ease of operationVSVolume of moving object

Solution Approach 1:

The holding mechanism is configured with a hollow shape that accommodates the jig inside. The actuator is integrated into this hollow structure, allowing the linear motion driving section to be nested within the holding mechanism's hollow portion, thereby achieving compact integration without increasing overall size.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The patent transitions from conventional three-dimensional actuator arrangements to a linear motion driving section that operates in one dimension (axial direction) within the hollow structure. This dimensional simplification allows the actuator to be compactly integrated without requiring additional spatial volume.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Adaptability or versatility

If a linear motion driving section is added to enable linear motion of the jig, then the jig can move linearly without changing arm attitude, but the holding mechanism size increases

Engineering Contradiction:

Improvelinear motion capabilityVSAvoidholding mechanism size

Core Design Contradiction:

Adaptability or versatilityVSVolume of moving object

Solution Approach 1:

The hollow structure of the holding mechanism serves multiple functions: it holds the jig, accommodates the linear motion driving section, and provides space for the actuator. This multi-functional design allows the linear motion capability to be integrated without requiring separate dedicated spaces, thereby avoiding size increase.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The linear motion driving section is nested within the hollow portion of the holding mechanism, with the actuator positioned inside the hollow structure. This nested arrangement allows the linear motion capability to be incorporated without increasing the external dimensions of the holding mechanism.

Inventive Principle:

Principle #7Nested doll (Nesting)

3Area of stationary object

If the holding mechanism is made compact to maintain workspace clarity, then the surgical environment remains uncluttered, but providing linear motion becomes more difficult

Engineering Contradiction:

Improveworkspace clarityVSAvoidlinear motion control

Core Design Contradiction:

Area of stationary objectVSEase of operation

Solution Approach 1:

The patent employs an ultrasonic motor to generate linear motion, replacing conventional mechanical drive systems. The ultrasonic motor's ability to produce linear motion through ultrasonic vibration allows for compact integration while maintaining ease of operation, as the motor can be small yet powerful enough to move the jig precisely.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 precise and efficient linear motion of surgical instruments within the surgical field without increasing the holding mechanism's size, enhancing operational efficiency and maintaining a clear workspace for surgeons.

Implementation Method 1

utilizing ultrasonic or electromagnetic motors to reduce the overall size and weight

Methodology Applied

Scientific EffectUltrasonic motor: Ultrasonic Motor

Implementation Method 2

utilizing ultrasonic or electromagnetic motors to reduce the overall size and weight

Methodology Applied

Scientific EffectElectromagnetic motor: Electromagnetic Propulsion

Data Source

PatentUS11382715B2Jig-holding device and medical observation device

Publication Date: 2022.07.12 SONY GROUP CORP

AI summary

To provide a jig holding apparatus and medical observation apparatus, which enable linear motion of a jig without increasing the size of a holding mechanism configured to hold the jig. A jig holding apparatus (1) includes: a holding mechanism (100) including a holding section (173) configured to detachably hold a predetermined jig (10) from a periphery of the jig (10), and a linear motion driving section (130) provided around the jig (10) held by the holding section (173) and configured to cause the jig (10) to linearly move.