Energy Treatment Instrument Jaw Liquid Distribution
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Solution Overview
Problem
Existing energy treatment instruments face challenges in effectively grasping and treating biological tissues due to interference from liquid feed conduits and limited liquid supply to the treatment area, which affects treatment efficiency and precision.
Innovation Solution
The energy treatment unit incorporates a jaw that is openable and closable relative to the probe distal portion, with a liquid feed conduit extending between the energy transmission portion and the probe, featuring an ejection port at the distal end of the conduit to supply liquid into the jaw cavity and an outflow portion on the jaw's outer surface, ensuring efficient liquid distribution and minimizing interference during tissue treatment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the liquid feed conduit is positioned in the cavity portion between the energy transmission portion and the probe, then liquid can be supplied to the treatment area, but the conduit interferes with the grasping and treatment of biological tissues
Solution Approach 1:
The liquid feed conduit is extracted from the cavity portion and repositioned to extend through the energy transmission portion itself. This removes the conduit from the interference zone between the energy transmission portion and the probe, eliminating the harmful interference while maintaining liquid supply functionality to the treatment area.
Solution Approach 2:
The liquid feed conduit is nested within the energy transmission portion structure, extending through it rather than occupying the external cavity space. This nesting arrangement allows the conduit to be integrated into the energy transmission portion without interfering with the probe and jaw assembly, thus resolving the contradiction between liquid supply and tissue treatment interference.
2Speed
If the ejection port is located on the outer surface of the probe distal portion, then liquid can be ejected toward the distal direction, but liquid distribution into the jaw cavity is insufficient
Solution Approach 1:
The ejection port is strategically positioned on the outer surface of the probe distal portion at a location that optimizes both distal ejection and inward flow into the jaw cavity. This local optimization of the ejection port position allows liquid to be ejected with sufficient speed toward the distal direction while simultaneously ensuring adequate liquid distribution into the jaw cavity for effective treatment.
3Adaptability or versatility
If the jaw is made openable and closable relative to the probe distal portion, then tissue grasping capability is improved, but device complexity increases
Solution Approach 1:
The jaw mechanism is merged with the energy transmission portion and sheath structure, forming an integrated assembly where the jaw's opening and closing motion is coordinated with the probe positioning. This merging reduces the need for separate complex actuation mechanisms while maintaining the ability to grasp and treat tissues effectively, thus improving adaptability without proportionally increasing device complexity.
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
This configuration enhances the ability to grasp and treat biological tissues by preventing interference from the liquid feed conduit and ensuring effective liquid supply, improving treatment precision and efficiency while maintaining low ultrasonic impedance and energy efficiency.
Implementation Method 1
configured to eject a supplied liquid from the ejection port toward the distal direction side and to cause the ejected liquid to flow into the jaw cavity
Implementation Method 2
configured to transmit energy, which is used for a treatment, from a proximal direction side toward a distal direction side
Data Source
AI summary
In an energy treatment unit and an energy treatment instrument, a jaw openable and closable relative to a probe distal portion of a probe is attached to a distal portion of an energy transmission portion. A liquid feed conduit extends between the energy transmission portion and the probe in a cavity portion, and a liquid ejected from an ejection port, that is formed at a distal end of the liquid feed conduit, flows into a jaw cavity in an inside of the jaw. A liquid outflow portion is provided on an outer surface of the jaw, and the liquid flowing into the jaw cavity flows to an outside of the jaw from the liquid outflow portion.