Percutaneous Connection Device with Osseointegrated Anchors
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Solution Overview
Problem
Existing percutaneous connection devices for medical implants are not sufficiently reliable and are vulnerable to infections, requiring lengthy surgical procedures and bone augmentation.
Innovation Solution
A percutaneous connection device with a percutaneous socket and elongated extension member that allows angular shifting, anchored to the osseous structure via osseointegration, reducing infection risk and simplifying implantation by avoiding bone augmentation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a percutaneous socket is fixed onto the surface of an osseous wall by means of an osteosynthesis screw with subcutaneous elements, then the device can be easily positioned, but the arrangement is not sufficiently reliable and is vulnerable to infections propagated from percutaneous passage
Solution Approach 1:
The device is divided into distinct segments: an internal anchoring system with osseointegrated anchors embedded in the bone, and an external percutaneous socket. This segmentation allows the anchoring function to be separated from the connection function, enabling reliable bone anchoring while maintaining ease of external connection and replacement.
Solution Approach 2:
The percutaneous socket is designed to nest over the transdermal penetration element, creating a layered structure where the socket provides external connection capability while the anchored element provides stable internal fixation. This nested arrangement enhances both reliability and ease of operation.
2Reliability
If a permanent percutaneous connector is used with an epithelial seal to prevent infections, then infection risk is reduced, but bone augmentation around the percutaneous passage is required which increases the duration of the surgical procedure
Solution Approach 1:
The osseointegrated anchors are预先 embedded in the bone during the initial surgical procedure, creating a stable internal anchoring system before the percutaneous socket is attached. This preliminary action eliminates the need for subsequent bone augmentation procedures, reducing overall surgical time while maintaining infection prevention capabilities.
Solution Approach 2:
The infection prevention function is extracted from the bone augmentation process and integrated into the percutaneous socket design itself, which includes sealing mechanisms and protective features. This separates the infection prevention function from the time-consuming bone augmentation step.
3Object-affected harmful factors
If bone augmentation is performed around the percutaneous passage to prevent infections, then infection risk is reduced, but the duration of the surgical procedure increases
Solution Approach 1:
The solution segments the infection prevention mechanism into the percutaneous socket design itself, which includes integrated sealing and protective features, rather than relying on extensive bone augmentation. This segmentation maintains infection protection while improving surgical efficiency.
Solution Approach 2:
The osseointegrated anchors are预先 installed to provide stable anchoring, which eliminates the need for time-consuming bone augmentation procedures. This preliminary anchoring action maintains infection prevention capabilities while significantly improving surgical productivity.
4Ease of manufacture
If the socket and cables are positioned subcutaneously in the zone of the dermis, then the device can be easily implanted, but the arrangement is vulnerable to infections propagated from percutaneous passage
Solution Approach 1:
The device segments the implantation into two parts: osseointegrated anchors embedded deep in the bone (away from infection risks) and a percutaneous socket positioned externally for easy access. This segmentation maintains ease of implantation while reducing infection vulnerability through the anchored design.
Solution Approach 2:
The transdermal penetration element acts as an intermediary, connecting the internally anchored system to the externally positioned socket. This intermediary structure provides a controlled pathway that reduces infection vulnerability while maintaining ease of implantation and access.
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 a reliable, quick, and infection-reduced method for establishing a permanent electrical connection, facilitating single-step surgical implantation and immediate functionality without prolonged bone healing.
Implementation Method 1
anchoring means provided for anchoring the device to the osseous structure by osseointegration
Data Source
AI summary
A percutaneous connection device to be fixed in an osseous structure of a patient to connect an internal entity located inside the body of the patient to an entity external to said body, the device comprising a percutaneous socket having a first end comprising a percutaneous abutment and a second end opposite to the first end, an elongated extension member designed to be inserted within a hole created into the osseous structure, said extension member having a first end to be removably coupled to the second end of the socket and a second end opposite to the first end, an anchoring mechanism for anchoring the device to the osseous structure by osseointegration and a separate connection running through the device from the first end of the percutaneous socket to the second end of the extension member, and comprising at least a first connector arranged within the percutaneous abutment.