The Handheld STG™ brings computing power to stethoscopes. Using an output of an electronic stethoscope, the STG displays the sounds that the physician is hearing and stores them on the PDA. These lung and heart sounds can be replayed along with a waveform visualization in the time or frequency domain. Waveform displays reveal diagnostic information often not heard on the auscultation. In addition, the STG software analyzes lung sounds for the presence of abnormal sounds. Wheezes and crackles are counted and displayed on the PDA screen. Captured sounds can be shared with other physicians or saved for future reference. The Handheld STG can be used as a phonocardiogram and is also designed for the recording, replay, display and automated analysis of lung sounds. STG is the only commercially available device for all of these clinical uses.

How to buy

The STG system consists of three parts:
1. A Windows Mobile device (formerly called Pocket PC) with audio input feature.
Currently, the only Pocket PCs on the market which have an audio input feature and which have been successfully tested with STG software and STG or Cardionics electronic stethoscopes HP iPAQ hx 2795 that can be purchased from Amazon.com. (These older models have also passed our tests, however they are significantly inferior to the recommended model: HP iPAQs 5450, 5150, 4700.)
2. The Stethoscope cab be purchased from Cardionics.
3. STG for Pocket PC™ software for sounds recording, visualization, and analysis running on and a companion STG for PC™ software for sounds visualization and analysis running on a desktop or notebook computer. To purchase the STG software from Stethographics, please use PayPal or send check to Stethographics. Please download the the STG software from here and install it on your device. The STG software will generate the DeviceID. Please email the DeviceID to annawong@stethographics.com and we will respond with the Unlock code. We are normally able to respond within one business day.

Recording techniques

Holding a chest piece by hand often generate artifacts that make visual display unreadable. If you have this problem (and most people do), we suggest that you attach the chest piece to skin so that you do not need to hold it. There are several attachment methods you can use:
1. Just place the chest piece on bare skin. If the chest piece is heavy enough it will stay in place.
2. Attach the chest piece with 3M Double Stick Discs (SKU B11687). You can order it here: 3M Double-Stick Discs pack of 102 Size 1 1/4" 3M SAS2349 (HC) 3M 2181 (Pack).
3. Use a rubber belt to hold chest piece in place. We prefer maternity belt used to hold a doppler monitor in place when the hospitals want to hear the fetal heartbeat for an extended time. It's made of very soft, pliable and stretchy material. You can order it here: www.utahmed.com, Toco Abdominal Belts, Model ABC-4425

STG User Manual (392 KB)
PDF File - requires Adobe Acrobat Reader Product Information Sheet (523KB)
PDF File - requires Adobe Acrobat Reader STG for Pocket PC™ Tutorial (1.4MB)
PDF File - requires Adobe Acrobat Reader STG for Pocket PC™ Quick Start Guide (425KB)

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