Laparoscopic Tissue Holding Device with Negative Pressure Suction
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Solution Overview
Problem
Conventional laparoscopic tools often cause tissue injuries, tumor spreading, and bleeding due to the vulnerable consistency of organ tissues, leading to prolonged operation times and impaired oncologic outcomes during tumor dissection.
Innovation Solution
A laparoscopic tissue holding device with a rigid mouthpiece and fluidic coupler that uses negative pressure to securely grasp and maneuver tissues without causing damage, featuring a structured surface for locking and a grasping member for safe manipulation with forceps or pincers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional laparoscopic tools are used to grasp tissue, then the tissue can be held and manipulated, but the tissue is damaged due to its vulnerable consistency
Solution Approach 1:
The patent employs a suction cup mechanism that uses negative pressure (vacuum) to grasp and hold the tissue. The suction cup creates a pressure differential that securely attaches to the tissue surface without mechanical compression or pinching, thereby maintaining tissue integrity while enabling effective manipulation during surgical procedures
2Reliability
If suction-based devices are used to hold tissue, then tissue damage is reduced, but the device complexity increases
Solution Approach 1:
The patent integrates the suction cup mechanism directly into the laparoscopic instrument shaft, combining the tissue holding function with the manipulation function in a single unified device. This integration eliminates the need for separate attachment mechanisms and reduces overall system complexity while maintaining tissue safety through the suction-based holding approach
3Force
If conventional forceps are used for tumor dissection, then the tissue can be grasped firmly, but bleeding and tumor spreading occur
Solution Approach 1:
The suction cup applies distributed negative pressure across the tissue surface area rather than concentrated mechanical force from forceps tips. This distributed pressure grip secures the tissue firmly for dissection while minimizing localized trauma, reducing bleeding risk and preventing tumor cell dissemination that could occur with traditional forceps grasping
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 device allows for safe and efficient manipulation of tissues without damage, reducing the risk of releasing pathological cells and enabling precise positioning and resection of tumors, thereby minimizing operation time and improving oncologic outcomes.
Implementation Method 1
By applying a negative pressure respectively under-pressure in the inner space via the negative pressure supply, the target tissue is mechanically coupled to the mouthpiece via suction.
Data Source
Figure 1~2b
Figure 3~4e
Figure 4a~4b
AI summary
Disclosed is a laparoscopic tissue holding device (11), the laparoscopic tissue holding device (11), including: a) a rigid mouthpiece (111), the mouthpiece having an inner side (111 i) and an outer side (111o), wherein the inner side (111 i) delimits a hollow inner space (111'), the mouthpiece further having a proximal side and an opposed distal side, wherein the inner space ( 111 ') is open at the distal side; b) a fluidic coupler (112) arranged for fluidic coupling an inner space (11V) of the mouthpiece (111) with a negative pressure supply (16); c) a grasping member (113), the grasping member (113) being arranged at the outer side (111o) of the mouthpiece (111) and being designed for grasping the laparoscopic tissue holding device in particular with a medical forceps and/or pincers. A laparoscopic tissue holding system may include a tissue holding device and a negative pressure source.