Electrohemostatic Renal Sheath for PCNL Bleeding Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Percutaneous nephrolithotomy (PCNL) procedures are prone to complications such as patient bleeding due to bleeding tissue during the procedure, necessitating a solution to mitigate or eliminate such complications.
Innovation Solution
A renal sheath equipped with electrode pairs and a wiring system to deliver electric current, which produces heat to induce hemostasis in bleeding tissue, thereby reducing the risk of bleeding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a percutaneous nephrolithotomy procedure is performed, then kidney stones can be removed, but patient bleeding occurs as a complication
Solution Approach 1:
The patent applies electrosurgical current through electrode pairs embedded in the renal sheath to convert electrical energy into thermal energy, which then achieves hemostasis by coagulating bleeding tissue. This transforms the harmful effect of bleeding into a controlled thermal coagulation process that stops bleeding while preserving the surgical access pathway.
Solution Approach 2:
The renal sheath acts as an intermediary device that combines the functions of surgical access and hemostasis. The electrode pairs embedded in the sheath wall serve as intermediaries to deliver electrical current to bleeding tissue, enabling the sheath to simultaneously provide access and control bleeding without requiring separate hemostatic devices.
2Ease of operation
If traditional PCNL procedures are used, then minimal invasiveness is achieved, but bleeding complications cannot be adequately addressed
Solution Approach 1:
The renal sheath is designed with multi-functionality, serving both as a surgical access device and as a hemostatic device. The electrode pairs are embedded directly in the sheath wall, allowing the same device to provide both access to the kidney and control of bleeding, thereby improving reliability without sacrificing minimal invasiveness.
Solution Approach 2:
The electrode pairs are pre-positioned within the renal sheath during the setup phase, before bleeding complications arise. This preliminary configuration allows for immediate hemostatic intervention if bleeding occurs, improving reliability by having the hemostatic capability ready in advance within the minimally invasive access pathway.
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 renal sheath effectively induces hemostasis in bleeding tissue, minimizing complications and enhancing the safety of PCNL procedures by providing a means to control bleeding.
Implementation Method 1
The one or more electrode pairs can be configured to produce heat sufficient to induce hemostasis in bleeding tissue surrounding the renal sheath
Data Source
AI summary
Systems and methods directed to a renal sheath, one or more electrode pairs in the renal sheath, and a wiring system configured to connect the one or more electrode pairs to an electric current. The renal sheath can include a distal end portion, a proximal end portion, and a medial portion between the distal and proximal end portions. The medial portion can include the one or more electrode pairs. The one or more electrode pairs can be configured to produce heat sufficient to induce hemostasis in bleeding tissue surrounding the renal sheath. The wiring system can be configured to connect the one or more electrode pairs to the electric current to produce the heat sufficient to effect the hemostasis. In some embodiments, an electrosurgical generator can be configured to provide an alternating current to the one or more electrode pairs to produce the heat sufficient to effect the hemostasis.