Operators Manual
32 Pages
Preview
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To obtain information about a warranty, if any, contact Nellcor’s Technical Services Department (1.800.635.5267), or your local Nellcor representative.
Contents
5300A Contents Contents...i Figures... ii Tables... iii Safety Information... 1 Warnings ... 1 Cautions ... 2
Introduction... 3 Intended Use ... 3 Manual Availability ...3 Background Information ... 3 Safety Features ... 4 Customized Warming Therapy ... 4 Automatic Temperature Stepdown ... 4 Automatic Over Temperature Shutdown ... 4 Warning Light ... 4 HEPA Filter ... 4 Wheel Locks ... 4 Symbols ... 6 Description of the Warming System ... 7
Installation... 9 Cart Installation ... 9 IV Pole Installation ...10 Patient Bed Installation ... 11
Using the Warming System... 13 Power Supply Cord ... 13 Main Power ... 13 Temperature Control ... 14 Air Filter ... 15 Self-Supporting Air Hose ... 15 Using WarmTouch CareQuilt and CareDrape Blankets ... 15
Routine Maintenance... 17 Cleaning the Warming System ... 17 Other Routine Maintenance ... 17
Specifications... 19 Warming System Specifications ... 19 Transport and Shipping in Shipping Container ... 20
Principles of Operation... 21 Control Panel ... 21
Index... 23
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Contents
Figures Figure 1: Figure 2: Figure 3: Figure 4: Figure 5: Figure 6: Figure 7: Figure 8: Figure 9: Figure 10:
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Cart Wheel Lock ... 5 Model WT-5300A Front View ... 7 Model WT-5300A Back View ... 8 Warming System Cart Installation ... 9 Warming System IV Pole Installation ... 10 Warming System Patient Bed Installation ... 11 Main Power Switch ... 13 Low Temperature Light ... 14 Control Panel ... 14 Control Panel ... 21
Contents
Ta b l e s Table 1: WT-5300A Symbols ... 6 Table 2: Model WT-5300A Blower Specifications ... 19 Table 3: Model WT-5300A Cart Specifications ... 19
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Safety Information
Warnings WARNING: Possible explosion hazard. Do not use the WarmTouch® Model WT-5300A patient warming system in the presence of flammable anesthetic agents.
WARNING: Possible electrical shock hazard. To reduce the risk of electrical shock do not remove the back case. Servicing is only to be done by qualified personnel.
WARNING: Possible electric shock hazard. Grounding reliability can be achieved only when the warming system is connected to an equivalent socket marked “HOSPITAL ONLY” or “HOSPITAL GRADE.”
WARNING: Possible fire hazard. Prevent the blanket material from coming into contact with a laser or an electrosurgical active electrode; rapid combustion could result.
WARNING: Possible burn hazard. Do not apply heat directly to open wounds. All patient’s wounds should be covered while using the warming system.
WARNING: Possible patient burns. Use caution and consider discontinuing use on patients during vascular surgery when an artery to an extremity is clamped. Do not apply the warming system to ischemic limbs. This could possibly cause the patient to be burned.
WARNING: Possible patient burns. Use caution and monitor closely if used on patients with severe peripheral vascular disease. This could possibly cause the patient to be burned.
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Safety Information
WARNING: Possible patient burns. Do not warm patients with the warming system hose only. Thermal injury may result. Always attach the hose to a WarmTouch blanket before providing warming therapy.
WARNING: WarmTouch CareDrapeTM and CareQuilt® blankets are for single patient use only.
WARNING: MRI scanning. The warming system is not suitable for use during magnetic resonance imaging (MRI) scanning. The warming system may affect the MRI image.
WARNING: Continuously monitor the patient's temperature. Reduce the air temperature or discontinue therapy when normothermia is reached.
Cautions Caution: Federal (U.S.A.) law restricts the use of the warming system to sale by or on the order of a physician. Caution: The warming system is fitted with an air filter; however, airborne contamination should be considered when using the warming system. Caution: If the warming system is mounted on the intravenous (IV) pole, it should be installed with the top of the unit’s handle less than 76 cm (30 inches) above the floor to prevent the IV pole from tipping over. Caution: If a malfunction occurs in the warming system, discontinue use. Notify your sales/service center of the malfunction. Service is only to be done by qualified personnel. Caution: The Model WT-5300A should not be operated in the presence of electromagnetic fields that are greater than 3 Volts/meter. This could cause shutdown of the Model WT-5300A by the fail-safe function within the equipment. Caution: Ensure that the patient is dry or the warming system may be ineffective.
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Introduction
Intended Use The WarmTouch Model WT-5300A Patient warming system (warming unit and blanket) is intended for prevention and treatment of hypothermia. For example, with the surgical patient, the patient in the preoperative holding area, the pregnant woman who shivers during epidural anesthesia due to hypothermia, or any patient who is uncomfortable anywhere in the cold critical care environment.
Manual Availability The most recent revision of this manual is available on the Internet at: http://www.mallinckrodt.com/respiratory/resp/Serv_Supp/ProductManuals.html
Background Information There are numerous ways of warming your patient, from cotton blankets to water mattresses. Research has shown that low temperatures surrounding the patient are a major factor contributing to hypothermia.1), 2) The warming system covers the patient with warm air and actively transfers heat across the skin. The result is to achieve normal thermia. In creating this warm customized pocket of air around the hypothermic patient, it is important to note that stagnant air, even if it is warm, does not work as an effective heat transfer medium. Stagnant air acts as an insulator, preventing the boundary layer of molecules next to the skin surface from transferring heat. Forced air warming causes warmed air molecules to flow over cooler skin surface. It is this active flow of warmed molecules that acts as a heat transfer medium. With the warming system, air is warmed and delivered into a lightweight blanket (CareQuilt or CareDrape Blanket) that rests over or under the patient. The CareQuilt and CareDrape blankets have many small perforations on the underside that allow air to exit the blanket and surround the patient.
1) Morris RH, Wilkey BR. “The Effects of the Ambient Temperature on Patient Temperature During Surgery Not Involving Body Cavities.” Anesthesiology 32:102-107, 1970. 2) Morris RH. “Influence of Ambient Temperature on Patient Temperature During Intra-abdominal Surgery.” Annals of Surgery 173:230-233, 1971.
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Introduction
Safety Features The Warming System is designed to give healthcare professionals more control over the patient’s core body temperature. There are several safety features of the warming system which make it safe and appropriate for such use.
Customized Warming Therapy Clinicians select temperature range setting at the onset of warming therapy to help ensure the appropriate setting is selected for every patient.
Automatic Temperature Stepdown The warming system provides a 45-minute temperature stepdown feature. When in the Boost mode, blower temperature will automatically drop to the high mode after each 45-minutes of use. The temperature may be reset to the Boost mode by selecting the Boost temperature on the unit front panel to start another 45-minute cycle.
Automatic Over Temperature Shutdown The automatic temperature controller and two back-up systems help to ensure temperature will not reach excessive levels. If necessary, the back-up systems automatically turn off the heater and illuminates the warning light. The warming system heater will start producing heat when the warming system temperature drops to approximately 34ºC to 37ºC.
Warning Light When the warning light on the control panel is illuminated, it indicates that one of the two thermostats has turned off the heater. The reason for the heater turn-off should be investigated as soon as possible after use.
HEPA Filter The system's High Efficiency Particulate Air Filter is 99.97% efficient at 0.3-micron particle size.
Wheel Locks The cart is equipped with two wheel locks. The wheel locks prevent the cart from moving while in use. The wheel locks must be released when moving the cart. 4
Introduction
Press the wheel lock arm down to lock the wheel. Lift the wheel lock arm to release the wheel lock. See Figure 1.
Figure 1: Cart Wheel Lock
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Introduction
Symbols The symbols identified in Table 1 are the symbols used on the WT-5300A and all WT-5300A labeling. Table 1: WT-5300A Symbols Attention symbol, consult accompanying documentation Temperature Control Low (32 °C) Temperature Control Medium (38 °C) Temperature Control High (43 °C)
Temperature Control Boost (45 °C for 45 minutes)
I 0
Power On Power Off
Protection Class I Protection Type BF
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Introduction
Description of the Warming System The WarmTouch Model WT-5300A Patient warming system (Figure 2 and Figure 3), CareQuilt and CareDrape blankets are intended for prevention and treatment of hypothermia. For example, with the surgical patient, the patient in the preoperative holding area, the pregnant woman who shivers during epidural anesthesia due to hypothermia, or any patient who is uncomfortable cold in the critical care environment.
1 - Hose
4 - Power Cord
2 - Main Power Switch
5 - Hour Meter
3 - Nozzle
6 - Control Panel Figure 2: Model WT-5300A Front View
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Introduction
1 - Over-Temperature Test Port
4 - Warning Label
2 - Bed Hook Bracket
5 - Nozzle Strap with Clip
3 - Filter Cover
6 - Instruction Label
Figure 3: Model WT-5300A Back View
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Installation
Cart Installation The warming system is shipped installed on the warming system cart. See Figure 4. The warming system should not be placed on the cart with the handle any higher than 61.6 cm (24.25 inches). At this height, the warming system and cart pass a 10-degree tilt test. Ensure that the three blower cart clamps are tight.
1 - 24.25 inches (61.6 centimeters) (Maximum) 2 - Blower cart clamps Figure 4: Warming System Cart Installation
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Installation
IV Pole Installation Figure 5 illustrates the installation of the warming system installed on an IV pole. The warming system should not be installed on the IV pole with the handle higher than 76 centimeters (30 inches).
1 - 30 inches (76 centimeters) (Maximum) Figure 5: Warming System IV Pole Installation
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Installation
Patient Bed Installation Figure 6 illustrates the installation of the warming system on a patient bed. The patient rail connectors will fit on bed rails up to 1.4 inches (3.6 centimeters) wide.
1 - Bed Rails 1.4 inches (3.6 centimeters) Figure 6: Warming System Patient Bed Installation
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U s i n g t h e Wa r m i n g S y s t e m
Power Supply Cord Plug the warming system power cord into a "hospital grade" or suitable mains outlet.
Main Power Power is controlled through one main rocker switch located on the front of the warming system. To begin operation, press the Main Power switch to the ON position (Figure 7). The Low temperature light on the control panel will illuminate and the unit will begin to blow air in the low temperature mode. See Figure 8. WARNING: No free-hosing. Do not use the blower without a blanket. Applying heat to a patient directly from the blower nozzle will cause patient burns.
1 - Main Power Switch Figure 7: Main Power Switch
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Using the Warming System
1 - Low Temperature Light Figure 8: Low Temperature Light
Temperature Control The heating temperature is controlled through the panel of buttons. This panel has four temperature settings: •
Low
32 °C (89.6 °F)
•
Medium
38 °C (100.4 °F)
•
High
43 °C (109.4 °F)
•
Boost
45 °C (113 °F) for 45 minutes
The temperature settings represent the range of air temperature entering the blanket. For patients with severe hypothermia requiring rapid warming, select the Boost temperature setting. To help prevent hypothermia or for treatment of mild hypothermia, select High, Medium or Low. The selected temperature light will illuminate. See Figure 9.
Figure 9: Control Panel
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Using the Warming System
WARNING: The patient must be closely monitored for rewarming. Vasodilation and possible hypotension can occur. Use good judgment when selecting a temperature. If unsure of proper setting, consult with the attending physician.
Air Filter The warming system contains a HEPA filter rated 99.97% efficient at 0.3-micron particle size. See Routine Maintenance on page 17 for filter replacement procedure.
Self-Supporting Air Hose Air is delivered into the CareQuilt or CareDrape blankets through a wire-reinforced hose, attached to the warming system.
Using WarmTouch CareQuilt and CareDrape Blankets WarmTouch CareQuilt and CareDrape blankets come in a range of sizes and configurations to fit patient’s individual sizes, surgical procedures, and comfort needs. Follow the instructions provided with all WarmTouch blankets for specific information concerning their recommended use.
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