Medical Implantable Lead Inner Coil Proximal Attachment
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Solution Overview
Problem
The existing manufacturing process for medical implantable leads is complex and costly due to the difficulty in attaching the inner coil to the connector pin, which requires precise length cutting and can result in uneven windings, leading to increased manufacturing costs and potential lead disengagement from the organ.
Innovation Solution
Attaching the inner coil to the proximal end of the connector pin, allowing for adjustable length and reducing the complexity of assembly, with the coil extending through the connector pin and being secured via a coil adapter, enabling easier verification and reduced manufacturing errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the inner coil is attached to the distal end of the connector pin, then the assembly is compact, but the manufacturing complexity increases and precision requirements increase
Solution Approach 1:
The patent inverts the conventional attachment approach by moving the inner coil attachment from the distal end to the proximal end of the connector pin. This inversion simplifies the manufacturing process by allowing the inner coil to be attached before final assembly, eliminating the need for precise length cutting and complex distal-end attachment operations.
Solution Approach 2:
The inner coil is attached to the proximal end of the connector pin in advance, before the final assembly of the lead. This preliminary attachment action allows for easier verification of connections and reduces manufacturing errors, as the inner coil can be secured while having access to the entire length of the connector pin.
2Manufacturing precision
If the inner coil length is precisely cut before assembly, then the fit is accurate, but manufacturing costs increase and tolerances decrease
Solution Approach 1:
The inner coil is attached to the proximal end of the connector pin before final assembly, allowing the full length of the connector pin to be utilized. This eliminates the need for precise pre-cutting of the inner coil to exact lengths, as the attachment point is established at the proximal end where the entire connector pin length is available.
Solution Approach 2:
The patent changes the attachment location parameter from distal end to proximal end of the connector pin. This parameter change allows for increased manufacturing tolerances and reduced precision requirements, as the inner coil can be attached to the full length of the connector pin without requiring precise length matching.
3Volume of moving object
If the inner coil is attached at the distal end, then space is saved, but uneven windings occur and reliability decreases
Solution Approach 1:
The patent inverts the attachment location from distal end to proximal end of the connector pin. This inversion prevents uneven windings and improves reliability by allowing the inner coil to be properly secured at the proximal end, where there is sufficient space and access to ensure even winding and secure attachment.
Solution Approach 2:
The inner coil is attached at the proximal end in advance, allowing for proper verification of even windings and secure attachment before final assembly. This preliminary attachment at the proximal end ensures that the inner coil is properly positioned and secured, improving lead engagement reliability.
Data Source
AI summary
A medical implantable lead has a header in a distal end, a fixation arrangement and an electrode arranged in the header. The lead also has a connector in a proximal end that includes a connector pin and is adapted to be connected to a monitoring and/or controlling device, and an inner coil, which extends inside an outer casing of the lead and is adapted to transmit electrical signals between the monitoring and/or controlling device and the electrode. The inner coil is attached to the connector pin. The inner coil extends through a bore inside the connector pin and is attached to the connector pin in its proximal end. A method for manufacturing such a lead is also provided.