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STEREOTAXIS, INC. filed this Form S-1/A on 06/17/2004
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Limitations of Instrument Control

       Navigation in the blood vessels and the chambers of the heart can be difficult because the path that a disposable interventional device must follow to arrive at the treatment site and deliver therapy can be complex and tortuous. Physicians using manual methods often utilize a range of different catheters and guidewires in succession in an attempt to find the right device or devices for the procedure being performed.

       Manually controlled catheters, guidewires and stent delivery devices, even in the hands of the most skilled specialist, have inherent instrument control limitations. In traditional interventional procedures, the device is manually manipulated by the physician who twists and pushes the external end of the instrument in an iterative process to thread the instrument through the blood vessels to the treatment site. Manual control of the working tip becomes increasingly difficult as more turns are required to navigate the instrument to the treatment site, as the blood vessels to be navigated become smaller and less accessible or more blocked, and as greater precision is required to carry out therapy at the treatment site.

Lack of Integration of Information Systems

       While sophisticated imaging, mapping and location-sensing systems have provided visualization for interventional procedures and allowed interventional physicians to treat more complex conditions, the substantial lack of integration of these information systems requires the physician to mentally integrate and process large quantities of information from different sources in real time during an interventional procedure. For example, a physician ablating heart tissue to eliminate an arrhythmia will often be required to mentally integrate information from a number of sources, including:

  •  real-time x-ray fluoroscopy images;
  •  a real-time location-sensing system providing the 3D location of the catheter tip;
  •  a pre-operative map of the electrical activity or anatomy of the patient’s heart;
  •  real-time recording of electrical activity of the heart; and
  •  temperature feedback from an ablation catheter.

       Each of these systems displays data differently, requiring physicians to continuously reorient themselves to the different formats and displays as they shift their focus from one data source to the next while at the same time manually controlling the interventional instrument.

The Stereotaxis Value Proposition

       The Stereotaxis System addresses the current challenges in the cath lab by providing precise computerized control of the working tip of the interventional instrument and by integrating this control with the visualization and information systems used during interventional cardiology and electrophysiology procedures, on a cost justified basis. We believe that the Stereotaxis System is the only technology to be commercialized that allows remote, computerized control of disposable interventional devices directly at their working tip.

       We believe that the Stereotaxis System will:

Expand the market by enabling new treatments for major diseases and permitting the treatment of more complex existing cases. Treatment of a number of major diseases, including chronic totally occluded coronary arteries and atrial fibrillation, is highly problematic using conventional catheter-based techniques. Additionally, many patients with multi-vessel disease and certain complex arrhythmias are often referred to other therapies because of the difficulty in controlling the working tip of disposable interventional devices. As a result, these patients are typically referred to more invasive surgeries or largely ineffective drug therapy. Because the Stereotaxis System provides precise, computerized control of the working tip of


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