Endoscopic Injection Device with Integrated Tissue Holding and Thermal Hemostasis
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Solution Overview
Problem
Existing endoscopic injection apparatuses face challenges in accurately inserting needles into tissues due to tissue movement, leading to potential wounds and perforation, especially in thin tissues like the colon, and require separate hemostats for bleeding control, making operations cumbersome.
Innovation Solution
An endoscopic injection apparatus with a needle and holding forceps that stabilizes the tissue using a sliding forceps operation unit, allowing precise needle insertion and simultaneous injection of solutions, and incorporates a heat-conductive surface for bleeding control without a separate hemostat.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a needle is inserted directly into tissue without holding the tissue, then the operation is simple, but the needle cannot be accurately inserted due to tissue movement causing unwanted wounds
Solution Approach 1:
The patent combines the tissue holding function and needle insertion function into a single integrated apparatus. The holding forceps and needle are merged into one device, allowing the operator to simultaneously grasp the tissue and insert the needle at the precise location without needing separate instruments, thereby improving insertion accuracy while maintaining operational simplicity.
Solution Approach 2:
The apparatus performs preliminary tissue grasping and stabilization before needle insertion. By pre-positioning the holding forceps to secure the tissue at the target site, the system eliminates tissue movement that would otherwise occur during needle insertion, ensuring accurate placement without requiring complex real-time adjustment mechanisms.
2Measurement precision
If a needle is inserted deeply into thin tissue like the colon, then injection can be performed, but the needle passes through the tissue causing perforation
Solution Approach 1:
The holding forceps perform preliminary stabilization of the thin tissue (colon) before needle insertion. By securing the tissue between the forceps tips, the system creates a stable platform that allows precise control of needle penetration depth, preventing the needle from passing completely through the thin wall and causing perforation.
Solution Approach 2:
The apparatus applies localized grasping force only at the specific injection site using the holding forceps. This localized stabilization ensures that the tissue is held firmly where the needle will be inserted, while the rest of the thin tissue remains undisturbed, enabling precise depth control and preventing unintended perforation of adjacent areas.
3Object-affected harmful factors
If a separate hemostat is used to control bleeding, then bleeding can be stanched, but the operation becomes cumbersome requiring switching between injector and hemostat
Solution Approach 1:
The patent merges the hemostatic function into the injection apparatus itself. The holding forceps are designed to simultaneously perform tissue grasping during injection and bleeding control afterward, eliminating the need to switch to a separate hemostat. This integration maintains bleeding control capability while significantly improving operational convenience.
Solution Approach 2:
The holding forceps are designed with multi-functionality, serving both as a tissue holder during injection and as a hemostat for bleeding control. This universal design allows the same component to perform multiple functions (tissue grasping, needle guidance, and bleeding stanching), reducing the number of instruments needed and simplifying the overall procedure.
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 ensures accurate needle placement, minimizes tissue perforation, and allows for immediate bleeding control within the same operation, enhancing the precision and comfort of endoscopic procedures.
Implementation Method 1
a pair of holding forceps which surrounds the needle
Implementation Method 2
incorporates a heat-conductive surface for bleeding control
Data Source
AI summary
The present invention relates to an injection device for endoscopy, and provides: a feature of inserting a needle for endoscopy into a tissue, in a state of holding a body tissue, which is a region to receive an injection, and then injecting an injection solution thereinto; and a feature enabling stanching of the bleeding region if bleeding occurs. That is, tissue is held by holding forceps and a needle is inserted thereinto, corresponding to a series of operations from a state in which the needle is accommodated between the holding forceps for holding the tissue, and then an injection solution is injected into the tissue through the needle. In addition, a bleeding region is stanched by the heat transferred to the holding forceps without using a separate hemostat if bleeding occurs during the operation. According to the present invention, the precise position of an injection target region can be confirmed, and thus the generation of a tissue perforation due to a needle can be prevented, and bleeding can be immediately stanched without using a separate tool if bleeding occurs.