Adjustable Compression Ring Assembly for Uniform Anastomosis Pressure
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Solution Overview
Problem
Current surgical methods for forming anastomoses in the alimentary tract, such as using surgical staplers or handsewn sutures, can result in complications like malformed staples, necessitating a need for alternative fastening methods that account for tissue properties.
Innovation Solution
A powered surgical anastomosis device with a compression ring assembly featuring adjustable compression based on real-time feedback mechanisms, using sensors to optimize tissue compression and minimize mechanical failure, and employing a four-phase operation of clamping, locking, cutting, and unclamping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If surgical staplers or handsewn sutures are used to form anastomoses, then continuity of the alimentary tract is restored, but complications such as malformed staples occur and tissue properties are not accounted for
Solution Approach 1:
The patent replaces traditional mechanical stapling systems with a compression-based anastomosis system. The compression ring assembly applies controlled compressive forces to bring tissue edges together without penetrating staples, eliminating staple malformation issues while maintaining anastomosis reliability.
Solution Approach 2:
The system dynamically adjusts compression parameters (force, duration, distribution) based on real-time tissue property feedback from sensors. This allows the compression force and distribution to be optimized for different tissue types, preventing both insufficient compression and excessive force that could cause tissue damage.
2Stress or pressure
If uniform compression pressure is applied across tissue, then pressure distribution is improved, but the complexity of controlling compression parameters increases
Solution Approach 1:
The compression ring assembly is divided into multiple independently controllable compression elements distributed around the ring. Each element can apply compression force independently, allowing the system to segment the compression task and achieve uniform pressure distribution through coordinated control of multiple simpler elements rather than one complex centralized mechanism.
Solution Approach 2:
Sensors integrated into the compression ring assembly provide real-time feedback on tissue compression status and properties. This feedback loop allows the control system to automatically adjust compression parameters to maintain uniform pressure distribution, reducing the need for complex manual control mechanisms.
3Manufacturing precision
If real-time feedback sensors are integrated to optimize compression, then tissue compression optimization is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The sensors integrated into the compression ring assembly serve multiple functions: measuring tissue compression force, detecting tissue properties, and providing feedback for control optimization. This multi-functionality reduces the need for separate specialized components, thereby limiting the increase in device complexity despite the addition of sensing capabilities.
4Object-affected harmful factors
If compression ring assembly is used instead of multiple staples, then the number of puncture sites is reduced, but the mechanism for securing rings becomes more complex
Solution Approach 1:
The locking mechanism integrates multiple functions into a unified system: the same mechanism that applies compression also secures the rings together, and the release mechanism simultaneously unlocks and retracts components. This merging of functions reduces the number of separate securing elements needed, thereby limiting the increase in device complexity while achieving reduced puncture sites.
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 provides uniform pressure distribution, reduces puncture sites, and optimizes tissue compression pressure, minimizing mechanical failure and ensuring consistent anastomosis formation across varying tissue types.
Implementation Method 1
Real-time feedback may include data from one or more sensors such as strain gauges for force
Implementation Method 2
light absorption detectors for optical properties
Implementation Method 3
bioimpedance sensors for electrical properties
Implementation Method 4
The compression rings may advantageously provide 1) more uniform distribution of pressure across tissue
Data Source
AI summary
A system for forming an anastomosis uses a compression ring assembly having a tubular support member and a first ring securely coupled to the tubular support member. The first ring is configured to engage a first segment of an alimentary tract portion. The compression ring assembly also includes a second ring slidably disposed on the tubular support member and movable along the tubular support member and relative to the first ring. The second ring is configured to engage a second segment of the alimentary tract portion. The system also includes a powered surgical device having a controller, a motor, and a transmission assembly coupled to the motor. The powered surgical device also includes an annular reload configured to support the second ring and an anvil assembly configured to engage the tubular support member. The anvil assembly is movable by the transmission assembly and configured to move the tubular support member and the first ring. The first ring and the second ring are configured to be approximated relative to each other to compress the first segment and the second segment to form an anastomosis.