Fish Bleeding via Heart Tube Insertion and Pressurized Liquid Discharge
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Solution Overview
Problem
Conventional bleeding methods for fish, particularly for round fish, fail to effectively remove blood and maintain freshness due to the exposure of internal organs and inefficient blood discharge, leading to rapid freshness deterioration and increased fishiness.
Innovation Solution
A bleeding method involving the formation of a slit connecting the pericardial cavity to the outside without cutting the abdominal aorta, allowing for the insertion of a tubular instrument to discharge blood using a press-fit liquid, which reduces fishiness and maintains freshness by minimizing organ exposure and optimizing blood discharge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the abdomen is cut open to insert the tube for press fitting liquid into the vascular system, then blood can be removed more reliably, but the internal organs are exposed to outside air and the round fish status is lost
Solution Approach 1:
The incision is segmented into two parts: a first incision through the skin to the muscle layer, and a second incision through the muscle layer to the pericardial cavity. This segmentation allows precise control of the incision path to avoid damaging internal organs while ensuring adequate access for tube insertion and blood removal.
Solution Approach 2:
The muscle layer acts as an intermediary barrier between the skin and the pericardial cavity. By making a separate second incision through the muscle layer at a position远离 from the abdominal cavity, the path is routed through intermediate tissue that protects internal organs from direct exposure to outside air while still allowing access to the vascular system.
2Reliability
If the tube is inserted through the heart to reach the arterial sphere, then blood can be discharged effectively, but the width of the slit must be large which increases the load on the fish
Solution Approach 1:
The pericardial cavity is accessed first through the controlled incision path, and the tube is then inserted through the heart muscle into the arterial sphere. This preliminary access to the pericardial cavity allows for precise positioning and minimizes the required slit width, thereby reducing the load on the fish while ensuring effective blood discharge.
3Productivity
If the abdominal aorta is cut to access the vascular system, then blood can be removed directly, but the internal organs are exposed to outside air
Solution Approach 1:
The tube is extracted through the heart muscle into the arterial sphere without cutting the abdominal aorta or opening the abdominal cavity. This extraction path through the muscle layer and pericardial cavity allows direct access to the vascular system for efficient blood removal while keeping the abdominal aorta and internal organs intact and protected from outside air exposure.
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 method enables the effective removal of blood from round fish, reducing fishiness and enhancing freshness by maintaining the fish's round shape and ensuring efficient blood discharge without exposing internal organs, thereby improving the quality and shelf life of the fish.
Implementation Method 1
discharging blood of the fish outside by press-fitting liquid into vascular system of the fish via the tubular instrument
Data Source
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AI summary
A bleeding method for a fish includes step of forming a slit SL that connects pericardial cavity 11 to an outer part of the fish by cutting membrane 16 to split a head and an abdomen such that abdominal aorta 19 is not cut and internal organs incorporated in abdominal cavity 12 are not exposed to an outside air, step of spreading the slit such that arterial sphere 18 does not tomozure, and a caudal side surface of ventricle 171 is exposed, step of inserting tubular instrument 2 in heart 17, which runs through the spread slit SL from the caudal side surface of the ventricle toward arterial sphere 18, step of fixing tubular instrument 2 to heart 17, and step of discharging blood of the fish outside by press-fitting liquid into vascular system of the fish via tubular instrument 2.