Disposable Tissue Removal Probe With Separated Motor Drive
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Solution Overview
Problem
Existing tissue removal procedures, particularly in sensitive body organs like the eye, lack control over the shape and volume of the cavity, are not user-friendly, and there is a need for safer, more ergonomic, and cost-effective solutions that ensure sterile conditions.
Innovation Solution
A hand-held disposable probe device with a separate rotating motor, allowing for controlled tissue removal, featuring a reversible connection, ergonomic design, and safety mechanisms, including a cover that prevents accidental activation, and a control unit for precise operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the cutting tool and motor are integrated in a single device, then the structure is simpler, but the device cannot be disposable and sterile conditions cannot be ensured
Solution Approach 1:
The device is divided into two separate components: a disposable probe containing the cutting tool and a reusable motor unit. This segmentation allows the probe to be sterile and disposable while the motor can be reused, resolving the contradiction between sterility and device simplicity.
Solution Approach 2:
The motor is extracted from the probe and placed in a separate reusable unit. This extraction enables the probe to be made disposable and sterile, while the motor serves as a separate component that can be reused across multiple procedures.
2Power
If the motor is made larger to provide sufficient power, then the cutting power is improved, but the overall device weight increases and ergonomics deteriorate
Solution Approach 1:
By separating the motor from the probe, the heavy motor component is isolated in a reusable unit while the disposable probe remains lightweight. This segmentation allows sufficient cutting power in the motor without increasing the weight of the handheld probe, improving ergonomics.
3Ease of operation
If the probe is made longer to improve ergonomics, then the user comfort is improved, but the parasite moment forces increase and control precision deteriorates
Solution Approach 1:
The separation of motor and probe allows the probe to be optimized for ergonomics (longer handle) while the motor unit serves as a counterbalance. This segmentation enables improved user comfort without sacrificing control precision, as the motor's position can be used to balance the longer probe.
4Reliability
If the cutting tool is made more robust to ensure reliable tissue removal, then the reliability is improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The cutting tool is placed in a disposable probe that can be manufactured simply and cost-effectively. The robustness requirement is met by having a reliable reusable motor unit that provides consistent power, while the disposable probe itself can be manufactured more simply, reducing overall manufacturing complexity and cost.
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
The apparatus provides controlled tissue removal with enhanced safety, ergonomics, and cost-effectiveness, ensuring precise surgical procedures with minimized risk of infection and accidental injury.
Implementation Method 1
a rotating motor device (a rotor) mounted on the proximal end of the disposable probe... the rotor can cause rotation of the cutting tool about its longitudinal axis upon actuation of the rotor
Data Source
AI summary
An apparatus for use in tissue removal from a body organ is presented. The apparatus comprises a hand-held probe device, a rotating motor device and a connection assembly configured for removably interconnecting between the hand-held probe device and the rotating motor device. The hand-held probe device is disposable and comprises a housing having proximal and distal ends, a rotatable cutting tool extending distally from the distal end of the housing and being configured for cutting and removing tissue during rotation, and a transmission assembly passing inside the housing between the proximal and distal ends and being configured for transmitting rotational power to the rotatable cutting tool. The connection assembly is configured for engaging between the rotating motor device and the transmission assembly to thereby controllably rotate the cutting tool and remove tissue. In some embodiments, the apparatus includes a control unit for controlling operation of the apparatus, the control unit comprises an activation mechanism for activating the rotatable cutting tool, and a controller configured for operating the activation mechanism to generate a single fixed activation signal of a known intensity and duration during a predetermined time interval, thereby restricting operation of the cutting tool during the time interval to the single activation signal only.