Leadless Extra-Cardiac Pacing With Expandable Stent
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Solution Overview
Problem
Existing pacemakers require invasive surgeries for lead implantation and replacement, leading to complications such as infection, swelling, and risk of embolization, and lack a wireless solution for extra-cardiac pacing.
Innovation Solution
A wireless pacing system comprising a generator, transmitter, and an implant device with an expandable stent that transduces energy into pacing stimuli, using a mesh material and electrodes to pace the heart without leads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional pacemaker leads are implanted, then heart pacing function is achieved, but surgical complications such as infection, swelling, and embolization risk occur
Solution Approach 1:
The patent extracts and eliminates the lead component from the traditional pacemaker system. Instead of implanting leads into the heart, the invention uses a wireless transceiver that transmits pacing signals through the skin, completely removing the source of surgical complications while maintaining effective heart pacing function
Solution Approach 2:
The patent replaces the mechanical lead implantation system with a wireless electromagnetic field-based system. The transceiver uses electromagnetic waves to transmit pacing signals through tissue, substituting the mechanical intrusion of leads with non-invasive energy transmission
2Object-affected harmful factors
If wireless pacing is implemented, then surgical complications are reduced, but energy transmission efficiency through tissue must be maintained
Solution Approach 1:
The patent employs parameter changes by adjusting the frequency and amplitude of electromagnetic signals to optimize transmission through tissue. The system adapts these parameters to overcome tissue attenuation and maintain efficient energy delivery to the heart while avoiding lead implantation
Solution Approach 2:
The patent introduces electromagnetic waves as an intermediary medium to transmit energy through tissue. Instead of direct mechanical contact, the electromagnetic field serves as a mediator that carries pacing energy from the external transceiver to the heart, enabling wireless operation
3Stability of the object's composition
If lead implantation is used, then pacing stability is achieved, but device complexity and surgical invasiveness increase
Solution Approach 1:
The patent removes the complex lead implantation procedure entirely, replacing it with a simple external transceiver placement. This extraction of the invasive component maintains pacing stability through wireless signal transmission while dramatically reducing surgical complexity
Solution Approach 2:
The patent enables the system to be self-contained with the transceiver housing all necessary components including the battery, control circuitry, and antenna. The system serves itself by generating and transmitting pacing signals without requiring external leads or complex surgical assembly
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
Provides a safer, less invasive method for pacing the heart by eliminating the need for leads, reducing surgical complications and enhancing patient comfort and safety.
Implementation Method 1
a transducer that is configured to transduce the energy into a pacing stimulus that is configured to pace the heart
Data Source
AI summary
A pacing system (100) for wireless extra-cardiac pacing of a heart (303) of a patient (301). The pacing system (100) includes a generator (102), a transmitter (104), and an implant device (106). The generator (102) is configured to generate energy. The transmitter (104) is configured to transmit the energy generated by the generator (102). The implant device (106) including an expandable stent that is configured to be implanted in the heart (303) of the patient (301), the implant device (106) including a receiver (220) that is configured to receive the energy that is transmitted by the transmitter (220), the implant device including a transducer (222) that is configured to transduce the energy into a pacing stimulus that is configured to pace the heart (303).