BIOTRONIK Philos DR-T User manual

Philos DR-T
DDDR Dual Chamber Pulse Generator
with Home Monitoring
Technical Manual

Philos DR-T
Implantable Pulse Generator
Philos DR-T
X-Ray identification
Radiopaque Identification
A radiopaque identification code is visible on standard x-ray, and
identifies the pulse generator:
Philos DR-T VV
CAUTION
Because of the numerous available 3.2-mm configurations
(e.g., the IS-1 and VS-1 standards), lead/pulse generator
compatibility should be confirmed with the pulse generator
and/or lead manufacturer prior to the implantation of a pacing
system.
IS-1, wherever stated in this manual, refers to the
international standard, whereby leads and generators from
different manufacturers are assured a basic fit. [Reference
ISO 5841-3:1992(E)].
CAUTION
Federal (U.S.A.) law restricts this device to sale by or on the
order of, a physician (or properly licensed practitioner).
©2004 BIOTRONIK, Inc., all rights reserved.

Philos DR-T Technical Manual i
Contents
1. Home Monitoring-Overview ................................................1
1.1 Home Monitoring ..............................................................1
1.2 Transmission of Information .............................................1
1.3 Patient Device with Components......................................2
1.4 Receiving Patient Data .....................................................3
2. Indications and Contraindications.....................................5
3. Warnings and Precautions..................................................7
3.1 Home Monitoring ..............................................................7
4. Types of Messages ............................................................11
4.1 Event Message ...............................................................11
4.2 Trend Message ...............................................................13
4.3 Patient Message .............................................................13
5. Description of Transmitted Data.......................................15
5.1 The Monitoring Interval ...................................................15
5.2 Heart Rate.......................................................................15
5.3 Atrial Rhythm ..................................................................15
5.4 Ventricular Rhythm .........................................................15
5.5 AV Conduction ................................................................16
5.6 System Status .................................................................16
6. Technical Data ....................................................................17
6.1 Modes .............................................................................17
6.2 Home Monitoring Parameters.........................................17
6.3 Pulse and Control Parameters .......................................18
6.3.1 Rate Adaptation ......................................................21
6.3.2 Parameters at Replacement Indication ..................21
6.3.3 Additional Functions................................................23
6.4 Programmers ..................................................................24
6.5 Materials in Contact with Human Tissue ........................24
6.6 Electrical Data/Battery ....................................................24
6.7 Mechanical Data .............................................................25
7. Order Information ..............................................................27

ii Philos DR-T Technical Manual
CAUTION
Federal (U.S.A.) law restricts this device to sale by, or on the
order of, a physician (or properly licensed practitioner).

Philos DR-T Technical Manual 1
1. Home Monitoring-Overview
Philos DR-T offers the complete functionality of a DDDR
pacemaker while being equipped with the additional features
associated with Home Monitoring. Consult the Philos technical
manual for a description and overview of the standard
pacemaker functionality of the Philos DR-T.
1.1 Home Monitoring
Home Monitoring is a novel system, which enables the exchange
of information about a patient’s cardiac status between implant,
patient, and physician. Home Monitoring can be used to provide
the physician with advance reports from the implant and process
them into graphical and tabular formats. This information helps
the physician optimize the therapy process, as it may result in
the patient being scheduled for additional clinical appointments
between regular follow-up visits if necessary.
The implant’s Home Monitoring function can be used for the
entire operational life of the implant (prior to ERI) or for shorter
periods, such as several weeks or months.
1.2 Transmission of Information
The implant transmits information with a small transmitter, which
has a range of about 2 meters. The patient’s implant data are
sent daily to the corresponding patient device (i.e.,
CardioMessenger) at a configurable time. The transmissions
may also be activated by the patient with the application of a
magnet over the implant and by certain cardiac events, as
programmed. The types of transmissions are discussed in
Section 4.
The minimal distance between the implant and the patient device
must be 15 cm.

2Philos DR-T Technical Manual
1.3 Patient Device with Components
The patient device (Figure 1) is designed for use in the home
and is comprised of the mobile device and the associated
charging station. The patient can carry the mobile device with
them during his or her occupational and leisure activities. The
patient device comes with a rechargeable battery that has an
approximate operational time of 24 hours after a charge time of 5
hours. It receives information from the implant and forwards it
via the mobile network to a BIOTRONIK Service Center.
For additional information about the patient device, please refer
to its manual.
Figure 1: Patient Device with Charging Stand
(CardioMessenger)

Philos DR-T Technical Manual 3
1.4 Receiving Patient Data
The implant’s information is digitally formatted by the
BIOTRONIK Service Center and processed into a concise report
called a Cardio Report. The Cardio Report, which is adjusted to
the individual needs of the patient, contains current and previous
implant data. The Cardio Report is sent to the attending
physician via fax or is available on the Internet, which is selected
during registration of the patient. For more information on
registering for Home Monitoring, contact your BIOTRONIK sales
representative.
The password protected BIOTRONIK Home Monitoring website
can be accessed by registered users at the following URL:
www.biotronik-homemonitoring.com
An online help menu is available in order to assist with the use of
the Home Monitoring website.
Use of the Internet for reviewing Home Monitoring data must be
in conjunction with the system requirements listed in Table 1.
Additionally, Table 1 provides system specifications that are
recommended for optimizing usage of the Internet.

4Philos DR-T Technical Manual
Table 1: System Requirements / Recommendations
System
Requirements
System
Recommendations
(for Optimal Usage)
Screen
Resolution
800 x 600 ≥1024 x 768
Internet
Bandwidth
56 kB/sec ≥128 kB/sec
(DSL, cable modem)
PC 600 MHz, 128
MB RAM
N/A
Internet Browser MS Internet
Explorer 5.0
- or -
Netscape
Navigator 4.72
≥MS Internet Explorer
5.5
- or -
≥Netscape 7/Mozilla
Acrobat Reader Version 4 Version 5 or higher
Communication
Channel
Fax (G3) or
e-mail
Fax (G3), e-mail or
mobile phone
Additionally, the attending physician may register to be informed
of the occurrence of an Event Triggered Message through email
or SMS (i.e., mobile phone) with a brief text message. If
registered for Internet availability, the patient’s detailed implant
data can then be viewed by logging onto the Home Monitoring
website.

Philos DR-T Technical Manual 5
2. Indications and
Contraindications
For the general indications and contraindications, please refer to
the Philos Family technical manual. The indications and
contraindications of the Philos DR-T are identical to those of the
rate adaptive dual chamber Philos DR pulse generator.

6Philos DR-T Technical Manual

Philos DR-T Technical Manual 7
3. Warnings and Precautions
Certain therapeutic and diagnostic procedures may cause
undetected damage to a pulse generator, resulting in
malfunction or failure at a later time. Please note the following
warnings and precautions:
Magnetic Resonance Imaging (MRI) – Avoid use of magnetic
resonance imaging as it has been shown to cause movement of
the pulse generator within the subcutaneous pocket and may
cause pain and injury to the patient and damage to the pulse
generator. If the procedure must be used, constant monitoring is
recommended, including monitoring the peripheral pulse.
Rate-Adaptive Pacing – Use rate-adaptive pacing with care in
patients unable to tolerate increased pacing rates.
High Output Settings – High output settings combined with
extremely low lead impedance may reduce the life expectancy of
the pulse generator to less than 1 year. Programming of pulse
amplitudes, higher than 4.8 V, in combination with long pulse
widths and/or high pacing rates may lead to premature activation
of the replacement indicator.
3.1 Home Monitoring
Patient’s Ability – Use of Home Monitoring requires the patient
and/or caregiver to follow the system instructions and cooperate
fully when transmitting data.
If the patient cannot understand or follow the instructions
because of physical or mental challenges, another adult who can
follow the instructions will be necessary for proper transmission.
Cellular Phone Availability – Home Monitoring is not practical
for patients who live in areas where cellular telephone networks,
utilizing the GSM standard, are not available or are not likely to
become available in the near future.

8Philos DR-T Technical Manual
Electromagnetic Interference (EMI) – Precautions for EMI
interference with the Philos DR-T pulse generator are provided
in the Philos technical manual in section 4.5. Sources of EMI
including cellular telephones, electronic article surveillance
systems, and others are discussed therein.
Use in Cellular Phone Restricted Areas – The mobile patient
device (transmitter/receiver) should not be utilized in areas
where cellular phones are restricted or prohibited (i.e.,
commercial aircraft).
Event Triggered Message – A timely receipt of the
corresponding event report cannot be guaranteed. The receipt
is also dependent on whether the patient was physically situated
in the required coverage range of the patient device at the time
the event information was sent.
Patient-Activated Message – The magnet effect must be
programmed “synchronous” if the [Patient Message] function is
activated. Otherwise, this function will not be available.
Not for Diagnosis – The data transmitted by Home Monitoring
are not suitable for diagnosis, because not all information
available in the implant is being transmitted.
Follow-Ups – When using Home Monitoring, the time period
between follow-up visits may not be extended.
The use of Home Monitoring does not replace regular follow-up
examinations. The data transmitted via Home Monitoring are not
suitable for a conclusive diagnosis.
Magnet Effect – The magnet effect must be programmed
“synchronous” if the attending physician enables the patient to
transmit messages.
Lead Connection – Because of the numerous available 3.2-mm
configurations (e.g., the IS-1 and VS-1 standards), lead/pulse
generator compatibility should be confirmed with the pulse
generator and/or lead manufacturer prior to the implantation of a
pacing system.
IS-1, wherever stated in this manual, refers to the international
standard, whereby leads and generators from different
manufacturers are assured a basic fit. [Reference
ISO 5841-3:1992(E)].

Philos DR-T Technical Manual 9
Consult the Philos manual for additional warnings and
precautions associated with this device.

10 Philos DR-T Technical Manual

Philos DR-T Technical Manual 11
4. Types of Messages
When the Home Monitoring function is activated, the
transmission of a message from the implant can be triggered as
follows:
•Trend Message – the time period (daily) initiates the
report
•Event Message – the pacemaker detects certain events,
which initiate a message immediately
•Patient Message – the patient initiates transmission of a
message
The attending physician decides whether or not the patient will
be able to initiate the transmission of a message on their own
through application of a magnet. Transmissions initiated through
magnet application do not affect event or trend message
transmissions.
4.1 Event Message
When certain cardiac and technical events are detected by the
implant, a message transmission is automatically triggered. This
is described as an “event message”.

12 Philos DR-T Technical Manual
The following cardiac and technical events initiate a report:
•Atrial Lead Check < 300 and > 3000 Ohm
•Ventricular Lead Check < 300 and > 3000 Ohm
•Ventricular Bursts (Runs)
•Ventricular Events (Episodes)
•Low P-Wave Amplitude1(< 50% safety margin)
•Low R-Wave Amplitude1(< 50% safety margin)
•ERI Activation
•1
st Mode Switch/24 hours
WARNING
A timely receipt of the corresponding event report cannot be
guaranteed. The receipt is also dependent on whether the
patient was physically situated in the required coverage
range of the patient device at the time the event information
was sent.
NOTE:
When ERI mode is reached, this status is transmitted.
Further measurements and transmissions of Home
Monitoring data are no longer possible.
NOTE:
The attending physician must notify the BIOTRONIK Service
Center about which of these events he/she wishes to be
informed.
1 Examples: The programmed sensitivity is 1.0 mV.
A) Average of the measured P/R-Wave amplitudes is 2.6 mV. Therefore,
measured value is greater than 100% of the safety margin. Event message is
not triggered.
B) Average of the measured P/R-Wave amplitudes is 1.9 mV. Therefore,
measured value is less than 100%, but greater than 50% of the safety margin.
Event message is not triggered.
C) Average of the measured P/R-Wave amplitudes is 1.4 mV. Therefore,
measured value is smaller than 50% of the safety margin. As a result, an event
message is triggered.

Philos DR-T Technical Manual 13
4.2 Trend Message
An additional type of message is the programmable “Trend
Message”. Trend messages occur at a programmable time of
transmission (i.e., at the end of the Monitoring Interval). The
time can be set anywhere between 0:00 and 23:50 hours. It is
recommended that you select a time during the late night or
early morning hours (between 0:00 and 4:00), or other time
when the patient is usually in his or her home.
The length of the time interval (monitoring interval) is not
programmable – it is preset to “daily”.
4.3 Patient Message
It is possible to trigger a transmission through magnet
application over the pacemaker. The attending physician must
inform the patient in detail about operating the device and about
the physical symptoms which would warrant a magnet
application by the patient.
WARNING
The magnet effect must be programmed “synchronous” if
the [Patient Message] function is activated. Otherwise, this
function will not be available.

14 Philos DR-T Technical Manual

Philos DR-T Technical Manual 15
5. Description of Transmitted
Data
The following data are transmitted by Home Monitoring, when
activated. In addition to the medical data, the serial number of
the implant is also transmitted.
5.1 The Monitoring Interval
The monitoring interval is considered the time period since the
last trend message was transmitted. For a trend message, the
monitoring interval since the previous trend message is set at
24 hours. For an event or patient message, the monitoring
interval would typically be less than 24 hours. This occurs when
these messages are sent after the programmed transmission
time of the trend message.
5.2 Heart Rate
•Average (mean) ventricular heart rate (bpm)
5.3 Atrial Rhythm
•Intrinsic rhythm (As / Ax) (%)
•Number of Mode Switching
•Duration of Mode Switching (%)
5.4 Ventricular Rhythm
•Intrinsic rhythm (Vs/ Vx) (%)
•Ventricular rate at Mode Switching (bpm)
•Number of ventricular runs (4...8 sequential VES)
•Number of ventricular events (more than 8 sequential
VES), defined as a ventricular episode
•Duration of the longest ventricular event (sec)

16 Philos DR-T Technical Manual
5.5 AV Conduction
•AV Synchronicity (Ax Vx/Vx) (%)
−with intrinsic rhythm (AsVs) (%)
−with atrial stimulation (ApVs) (%)
−with ventricular stimulation (AsVp) (%)
−with dual-chamber stimulation (ApVp) (%)
5.6 System Status
•Atrial lead check
•Ventricular lead check
•Mean P-Wave amplitude / programmed sensitivity (%)
•Mean R-Wave amplitude / programmed sensitivity (%)
•Battery status
NOTE:
Atrial and Ventricular Lead Check must be programmed ON
to enable Home Monitoring functionality of this data.