Catheter and Delivery System Design

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Catheter delivery handles with steering knobs mounted on a stabilizer rail

Catheter and Delivery System Design

Catheter and Delivery System Design

We specialize in control handles, actuation mechanisms, and ergonomic interfaces for catheter-based devices and delivery systems. We support your catheter program from early concept through functional prototypes, verification builds, and transfer to manufacturing. Our work spans the full system, from the distal tip to the physician-facing handle, and we work alongside shaft, braid, and tubing partners on integration.

We specialize in control handles, actuation mechanisms, and ergonomic interfaces for catheter-based devices and delivery systems. We support your catheter program from early concept through functional prototypes, verification builds, and transfer to manufacturing. Our work spans the full system, from the distal tip to the physician-facing handle, and we work alongside shaft, braid, and tubing partners on integration.

Catheter Systems Capabilities

Catheter Systems Capabilities

  • CONTROL handle architecture for complete delivery systems
  • STEERABLE deflection, advancement, rotation, and deployment mechanisms
  • SECONDARY features: pull-wire and lead-screw actuation, locking and braking
  • GUIDEWIRE grippers, torquers, and procedural accessories
  • MULTI-LUMEN flush, hemostasis, and aspiration hub design integration
  • ERGONOMIC human factors evaluation with clinical users
  • Three catheter handles on a stand with coiled catheter, render
  • ARCH transcatheter delivery handle, Concept C CAD views
  • ARCH transcatheter delivery handle, Concept A CAD views
  • Catheter delivery handle internal mechanism, CAD section view
  • Catheter delivery handle prototype on the bench
  • Catheter handpiece final concept with spring-loaded tether control buttons
  • Catheter luer hub control handpiece concept sketches
  • Hands-on evaluation of catheter handle prototypes
  • Three catheter handles on a stand with coiled catheter, render
  • ARCH transcatheter delivery handle, Concept C CAD views
  • ARCH transcatheter delivery handle, Concept A CAD views
  • Catheter delivery handle internal mechanism, CAD section view
  • Catheter delivery handle prototype on the bench
  • Catheter handpiece final concept with spring-loaded tether control buttons
  • Catheter luer hub control handpiece concept sketches
  • Hands-on evaluation of catheter handle prototypes

Catheter Systems Experience

Catheter Systems Experience

  • Transcatheter mitral valve delivery system, trans-apical and trans-septal

  • Dual-deflectable delivery and control handle

  • Wire snare and suture lock handles

  • Electrosurgical devices with energized guidewire

  • Suture cutter handles for cardiothoracic surgery

  • Guidewire gripper, torquer, and deflector mechanisms

  • Needle handles and cutters for transcatheter access

  • Large-bore and multi-lumen hubs at 16, 20, and 24 French

  • Dual-sphere mechanical thrombectomy controls

  • Endoscopic ultrasound (EUS) implant delivery handle through the endoscope working channel

Case Study: TELLTALE

Case Study: TELLTALE

2022 Medical Design Excellence Awards Silver Winner

Challenge: The BASILICA procedure uses electrosurgery to split the native aortic leaflet with an energized guidewire, preventing coronary artery obstruction during Transcatheter Aortic Valve Replacement (TAVR). Preparing the wire required physicians to strip its insulation and bend it to a specific angle by hand. Results varied by operator skill, and a failed preparation meant replacing the wire mid-procedure.

Solution: HERNETICS designed a handheld denuder and kinker tool that performs both steps with fixed, repeatable geometry, together with guide catheters, a spring-loaded mechanism, and custom guidewire grippers.

Result: FDA 510(k) clearance and Silver at the 2022 Medical Design Excellence Awards.

  • TELLTALE handle and luer hub components, render
  • TELLTALE handle CAD with internal mechanism
  • TELLTALE handle internal mechanism, CAD detail
  • TELLTALE handle, isometric CAD view
  • TELLTALE handle, transparent CAD view
  • TELLTALE handle internal components, cutaway CAD
  • TELLTALE handle trigger mechanism, CAD detail
  • Injection mold core for a TELLTALE handle part
  • Injection mold tooling for a TELLTALE handle part
  • Handle concept sketches
  • Handle prototype evaluated in hand beside its CAD model
  • 3D-printed TELLTALE handle prototype held in hand
  • Prototype handle parts with a flexure strip
  • 3D-printed TELLTALE handle prototype with trigger grip
  • Two 3D-printed handle prototypes, black and white
  • Series of 3D-printed TELLTALE handle prototypes
  • TELLTALE handle and luer hub components, render
  • TELLTALE handle CAD with internal mechanism
  • TELLTALE handle internal mechanism, CAD detail
  • TELLTALE handle, isometric CAD view
  • TELLTALE handle, transparent CAD view
  • TELLTALE handle internal components, cutaway CAD
  • TELLTALE handle trigger mechanism, CAD detail
  • Injection mold core for a TELLTALE handle part
  • Injection mold tooling for a TELLTALE handle part
  • Handle concept sketches
  • Handle prototype evaluated in hand beside its CAD model
  • 3D-printed TELLTALE handle prototype held in hand
  • Prototype handle parts with a flexure strip
  • 3D-printed TELLTALE handle prototype with trigger grip
  • Two 3D-printed handle prototypes, black and white
  • Series of 3D-printed TELLTALE handle prototypes

Case Study: InnovHeart Saturn

Case Study: InnovHeart Saturn

Challenge: Transcatheter Mitral Valve Replacement (TMVR) system for patients with moderate to severe mitral regurgitation. Instead of one implant, it's delivered in two components: a pair of annular segments that encircle and restrain the native annulus beneath the leaflets, and a low-profile central valve whose connecting arms lock it to that ring once in place. The delivery system has to place both parts in sequence, inside a beating heart, with the ring positioned around the leaflets before the valve can dock to it.


Solution: HERNETICS supported the early concept development and functional prototypes for the Saturn delivery system across both access approaches. The work covered handle architecture and actuation for staged, two-component deployment, so the ring and the valve could each be positioned and released under the physician's control.


Result: InnovHeart has since raised a $55 million Series C to advance the trans-septal Saturn system.

  • InnovHeart Saturn delivery system on its stand, open position, CAD
  • InnovHeart Saturn delivery system on its stand, closed position, CAD
  • Delivery system prototype mounted on a benchtop rail fixture
  • Delivery system prototype on tripod stands during testing
  • Annotated CAD render of the delivery system handles and rail
  • InnovHeart Saturn delivery system prototype on bench stand
  • InnovHeart Saturn delivery system handle and stand, CAD details
  • InnovHeart Saturn delivery system annotated CAD views
  • InnovHeart Saturn delivery system on its stand, open position, CAD
  • InnovHeart Saturn delivery system on its stand, closed position, CAD
  • Delivery system prototype mounted on a benchtop rail fixture
  • Delivery system prototype on tripod stands during testing
  • Annotated CAD render of the delivery system handles and rail
  • InnovHeart Saturn delivery system prototype on bench stand
  • InnovHeart Saturn delivery system handle and stand, CAD details
  • InnovHeart Saturn delivery system annotated CAD views

Case Study: Suture Cutter

Case Study: Suture Cutter

Specialized precision surgical instrument designed for cleanly trimming fine cardiovascular and vascular sutures during minimally invasive cardiac surgery or video-assisted thoracic procedures. Features ergonomically intuitive syringe grip with spring loaded actuation for ease of use and direct feedback.

Case Study: Cerevasc eShunt System

Case Study: Cerevasc eShunt System

Cerevasc eShunt System is an investigational, minimally invasive endovascular device designed to treat communicating hydrocephalus and elevated intracranial pressure without traditional open neurosurgery. A controlled bypass is created from the subarachnoid space (cerebellopontine angle cistern) into the venous system (inferior petrosal sinus and internal jugular vein) and a specialized implant is used to regulate cerebrospinal fluid (CSF) flow and prevent blood reflux, emulating natural arachnoid granulations.

Case Study: Retriever Medical Clothound System

Case Study: Retriever Medical Clothound System

Clothound is a mechanical thrombectomy system designed to remove acute, sub-acute, and chronic wall-adherent blood clots. The system uses two independent, physician-controlled nitinol spherical baskets (Clear Active Controlled Expansion or ACE™ technology). The distal sphere provides embolic protection and wall engagement, while the proximal sphere breaks down and entrains the clot.

Case Study: Ablation Catheters for Cardiac Arrhythmias

Case Study: Ablation Catheters for Cardiac Arrhythmias

This advanced system is primarily designed to treat cardiac arrhythmias, such as atrial fibrillation, by safely and efficiently neutralizing the abnormal electrical pathways causing irregular heartbeats.

  • ARCH transcatheter delivery handle, Concept A CAD views
  • ARCH transcatheter delivery handle, Concept C CAD views
  • Catheter delivery handle internal mechanism, CAD section view
  • Catheter delivery handle prototype on the bench
  • Catheter handpiece final concept with spring-loaded tether control buttons
  • Catheter luer hub control handpiece concept sketches
  • Hands-on evaluation of catheter handle prototypes
  • ARCH transcatheter delivery handle, Concept A CAD views
  • ARCH transcatheter delivery handle, Concept C CAD views
  • Catheter delivery handle internal mechanism, CAD section view
  • Catheter delivery handle prototype on the bench
  • Catheter handpiece final concept with spring-loaded tether control buttons
  • Catheter luer hub control handpiece concept sketches
  • Hands-on evaluation of catheter handle prototypes

Case Study: Endoscopic Ultrasound Implant Delivery

Case Study: Endoscopic Ultrasound Implant Delivery

Control system that delivers a self-expanding implant through the working channel of an endoscopic ultrasound (EUS) scope. This minimally invasive treatment creates a gastroenteric anastomosis, a connection between the stomach and small intestine, as a weight-loss procedure like gastric bypass to alter food absorption. HERNETICS designed the main handle components and built and tested functional prototypes with the client's team to confirm deployment performance and user friendly ergonomics.

Case Study: Glenn Shunt Handle

Case Study: Glenn Shunt Handle

A Glenn shunt, also known as the Glenn procedure, is an open-heart surgery that connects the main vein from the upper body directly to the lung arteries to help babies born with a single pumping chamber in the heart. The superior vena cava is disconnected from the heart and attached directly to the pulmonary artery.

Case Study: Catheter Delivery System Stand

Case Study: Catheter Delivery System Stand

Positioning and stabilization stand for a cardiovascular delivery catheter system. This specialized mechanical rail platform clips onto the interventional table and supports the modular delivery control handles. This allows the interventionalist to make microscopic, precise adjustments (like torque or axial advancement) without having to manually hold the individual handles for the duration of the procedure.

Catheter Program Engagement

Catheter Program Engagement

HERNETICS typically joins catheter programs at the concept or feasibility stage, or when an existing handle design must be resolved before verification. Engagements range from a focused mechanism study to full handle development through procedure validatio to manufacturing transfer.