What is the typical minimum order quantity (MOQ) for an OEM run?

There is no reliable universal MOQ for a custom shaft. It depends on the supplier’s process, material purchasing constraints, setup, inspection plan, and whether tooling or verification work is included. Request separate sample, pilot, and production assumptions.

Should I specify flat or round wire in my RFQ?

State the required shaft profile and functional targets, then ask the OEM to compare candidate wire profiles against the available stack-up, torque, flexibility, and manufacturing constraints. A wall-thickness cutoff alone is not enough to choose a profile.

How long does a typical OEM transfer take?

Timing is project-specific. Drawing maturity, tooling, material lead times, process development, first-article scope, and verification can change the schedule. Ask for a milestone plan with assumptions and dependencies.

What data should I include in my RFQ package?

Include intended use, shaft length, OD/ID and tolerances, liner/wire/jacket requirements, reinforcement zones and transitions, annual demand and lot sizes, drawing revision, inspection criteria, and planned verification or sterilization needs. Mark open design inputs clearly.

Braid and Coil Reinforced Catheter Shaft OEM

Prepare a focused RFQ using your design and program inputs.

Catheter Braiding OEMPublished September 23, 2026Reviewed October 1, 2026

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Catheter Shaft OEM RFQ Readiness Screen

Build a focused supplier discussion from your architecture, dimensions, and planned volume.

Architecture

Program stage

Target outer diameter (Fr)

Enter 1–30 Fr. Add ID and tolerances to your drawing.

Select an architecture and program stage, and enter OD (1–30 Fr).

OEM Decision Factors

These are screening principles for an RFQ discussion. Actual feasibility, process capability, yield, cost, and timing depend on the finished design and supplier-specific evidence.

Architecture sets the process plan

Basis: Braid, coil, and combined reinforcement create different stiffness and transition requirements. The manufacturing route depends on the shaft drawing, material stack, equipment, and validation plan; there is no universal yield or feasibility rating for an architecture alone.

Action: Show reinforcement start and stop locations, transition geometry, and target torque/flex behavior on the RFQ drawing. Ask the supplier to identify any unsupported geometry before quoting.

The full stack-up controls fit and performance

Basis: Liner ID and wall, reinforcement profile, jacket coverage, finished OD/ID, and their tolerances all compete for the available cross-section. French size alone cannot establish whether a particular material and reinforcement stack will fit.

Action: Separate critical-to-function dimensions from preferred targets, and ask the OEM to review the tolerance stack before design freeze. Any tolerance change should be assessed against product requirements and verification data.

Cost and schedule require a project-specific quote

Basis: Tooling, setup, material availability, process development, inspection, and verification scope can affect NRE and unit pricing. A meaningful quote needs the design inputs and a clearly defined program scope.

Action: Request separate assumptions for samples, tooling/NRE, pilot lots, production volumes, and verification. Include annual demand and lot size so the supplier can explain its quote basis.

Manufacturing Profiles by Architecture

Reinforcement changes how the shaft behaves and what the RFQ must define. These diagrams compare architecture choices, not guaranteed process capability or yield.

Braid-Only Shaft

Braid can support torque transfer; pitch, wire, and coverage remain design-specific.

Coil-Only Shaft

Coil can support flexibility and kink resistance; pitch and spacing must match the intended behavior.

Hybrid (Braid-to-Coil)

Combines reinforcement zones and needs explicit transition geometry and verification criteria.

Verification Planning

Choose verification methods and acceptance criteria for the finished device, its intended use, and identified risks. ISO 10555-1:2023 specifies general requirements for sterile, single-use intravascular catheters; it is not a universal braid or coil transition recipe. FDA bench-testing guidance likewise describes testing in relation to the particular device or device type. Confirm which standards and regulatory requirements apply to the complete product.

Kink and Trackability

Define the representative use path, bend conditions, measured outcome, and acceptance rationale for the device. A test setup or lumen-collapse limit should not be copied across designs without a product-specific basis.

Dimensions and Joints

Identify critical dimensions, reinforcement transitions, and joints on the drawing. Select inspection and mechanical tests that verify those design inputs on representative finished devices.

Evidence and scope

Cost, yield, MOQ, and lead-time values depend on the supplier and project scope; this page does not present them as universal benchmarks. Source status checked October 1, 2026.

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Share the drawing, requirements, and forecast so the team can confirm review scope, quote assumptions, and open design inputs.

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OEM Failure Modes & Mitigations

Treat these as design risks to review with the supplier. Define controls and acceptance criteria for the specific shaft and intended use.

Liner Delamination

Trigger: A liner, tie-layer, or jacket interface may not meet the design bond requirement if material preparation or the joining process is not controlled for the chosen stack.

Mitigation: Identify the relevant interfaces and acceptance method in the drawing or quality plan. Review first-article sections and bond data against product-specific criteria.

Wire Protrusion (Birdcaging)

Trigger: Insufficient or inconsistent jacket coverage can expose reinforcement or create a local surface defect. The risk depends on wire profile, placement, and the finished shaft stack.

Mitigation: Agree on visual and dimensional inspection criteria, and verify the finished shaft using methods selected for the device design and intended use.

Transition Failure (Hybrids)

Trigger: A change from braid to coil can create a local change in stiffness or lumen behavior. A fixed transition length or lumen-collapse threshold is not suitable for every shaft or intended anatomy.

Mitigation: Dimension the transition on the drawing and define kink/trackability acceptance criteria from intended use and risk analysis. Review the transition in the finished-device verification plan.

OEM Procurement FAQ

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