A.      Dual Pivoting Litter System     Pic

The Dual Pivoting Litter System is made up of two basic components; the Litter Base and the mobile Litter Carriage. The Litter Base is installed on the left side of the cabin parallel with the center line of the aircraft, and serves as a durable platform for the mobile Litter Carriage. From this initial position the Carriage can be repositioned fore and aft laterally and diagonally as required, to facilitate a variety of patient treatment protocols. The removable Stretcher attached to the Carriage System has two (2) should harnesses and three (3) lateral restraints.

A major feature of the moveable Carriage is that it will also slide and pivot outboard through the sliding aircraft cabin door. The Carriage then extends approximately 44 inches (unsupported by the medical crew) outboard of the aircraft. This unsupported extension allows a medical crew member to stand on each side of the Carriage and easily load or unload the patient on the Stretcher while maintaining correct body mechanics for lifting.

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B.      Secondary Stretcher     Pic

The secondary stretcher system is typically of an all aluminum design, the construction of which offers both lightweight and strength to the traditional backboard design used for the removal and transport of patients from the accident scene. The stretcher is equipped with a patient restraint system as well as provisions for securing it in the aircraft. When fully opened it extends to a length of 72.0” by 18.0” wide, folded for storage the unit measures 36.0”x18.0”x2.5” and weighs 17.5 pounds. The backboard has a load capacity of 350 pounds.

The stretcher/backboard when folded in half stores between the pilot seats and in flight on both the left and right side of the aircraft and is secured in place by a Heli-Dyne Systems fabricated restraint system.

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C.      Medical Utility Floor

A composite, non-structural medical utility floor will be installed in the passenger cabin. The purpose of the floor is two fold. First, is utilitarian, serving as a barrier so that escaping body and medical fluids might be better contained and not contaminate aircraft structure that is highly susceptible to their corrosive effects. Secondly, provide a relatively clean, attractive and safe platform for the medical crew to perform their duties.

The floor is composite “sandwich” whose outer skins are fiberglass and core is Klegecell, a high performance PVC foam, that provides a strong durable yet lightweight floor panel.

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D.      High Intensity Cabin Lighting

There will be a six (6) unit, true spectrum High Intensity, Low Voltage Halogen Cabin Lighting will be supplied with controllable intensity. This light intensity output (foot candles) and proximity of the lights with respect to the patient closely approximates emergency department diagnostic lighting characteristics.

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E.      High “G” Crash Attenuating Medical Crew Seating     Pic

The pivoting/tracking Attendant Seat(s) is installed parallel to the aircraft centerline on the right hand side of the cabin. The Attendant Seat will accommodate one attendant facing laterally and centered on the primary patient. The seat is strategically positioned to give optimum access to the patient during all phases of flight, taking full advantage of the team approach to emergency patient care. During “high density” operations where multiple patients are being transported the seat is designed to track to a mid-cabin position, giving medical personnel greater access to patients and life support equipment.

Construction of the seat structure is all metal, comprised of aluminum panels with a honeycomb core. The materials used in the upholstery of the seat cushions, a medium density, open-cell polyurethane foam* and “Naugahyde” covering of the seats are both certified to be in compliance with FAR 25.853(b) and 25.855.

The medical attendant seat features adjustable lumbar spine support and an integrated four point restraint system. The seats have a combined structure weight of only 44 pounds. The medical attendant seat is FAA approved and carries a TSO certification. The materials used in the upholstery, a medium density, open-cell polyurethane foam* and “Naugahyde” covering of the seats are certified to be in compliance with FAR 25.853(b) and 25.855.

Medium density, open-cell polyurethane foam is temperature-sensitive, softening when it comes in contact with a warm surface. In a seat cushion, the foam softens and conforms to the occupant’s body. This provides even pressure distribution and unrestricted blood circulation, significantly reducing discomfort, even over long periods.

The foam’s softening behavior is localized, the surfaces not exposed to body heat remain firm and supportive to reduce fatigue.

But most important are the foam’s energy-absorption properties. Many foams deform significantly under impact, storing energy and then releasing it elastically during recoil. Such foams may delay the inset of the occupants acceleration, then rebound suddenly, amplifying the impact response and increasing the possibility of injury.

Tests conducted at the Air Force Aerospace Medical Research Laboratory at Wright Patterson Air Force Base found that a medium density, open-cell polyurethane foam minimizes such deformation and elastic recoil during impact loading. Comparing various seat cushion materials on a 3.35-meter vertical deceleration tower, researchers found that the cushions significantly lowered seat loads as well as the occupants head and chest accelerations.

Unlike many of the materials tested, the foam selected for use in Heli-Dyne Systems medical attendant seats behaves like a semi-rigid substance when impacted quickly, absorbing up to 97 percent of the impact energy without bottoming out. Further, it exhibits slow recovery, little energy is returned to the impacting body.

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F.      Liquid Oxygen System (LOX)     Pic

The Liquid Oxygen Converter System provides a safe, lightweight and compact means of storing, pressurizing and supplying ten (10) liters of liquid oxygen (8,600 Gaseous Oxygen Liters). The LOX unit, converter and containment vessel will be located in the aircraft equipment bay.

The system features a wedge base with a single retaining wing nut for mounting with only four quick disconnect type connectors required to separate the converter from the aircraft for refilling.

The converter’s system operating pressure is 70 PSIG with flows in excess of 72 liters per minute of gaseous oxygen over an ambient temperature range of -65 F to +260 F.

The system is capable of supplying a maximum quantity of eight thousand (8000) gaseous liters of oxygen. This equates to a flight time of 133 minutes for two (2) Advanced Life Support (ALS) patients on high volume/rate flow ventilators at 30 liters per minute (lpm) each; or a total flight time of 88 minutes for six (6) Basic Life Support (BLS) patients on BVM’S, and/or a flush flow of 15 lpm per patient.

To provide the air and ground maintenance crews a means of monitoring the remaining level of liquid oxygen a capacitance probe has been installed in the tank.

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G.      Supplemental Oxygen Clamps

Clamps mounted in the right near cabin area provide for the installation of a lightweight, versatile and portable supplemental oxygen unit that can offer a wide variety of airway maintenance options both on board and off the aircraft. The clamps can accommodate a “D” size cylinder permitting for the treatment of breathing or non-breathing patient with either liter flow or demand valve capabilities.

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H.      Compressed Air System

The Compressed Air System installed is comprised of a regulator, hoses and connections, and a light weight compressed air pump. The air pump, is capable of supplying a quantity of air at a flow of 30 lpm.

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I.      Suction System

Two (2) independent Suction Systems will be installed. Each system utilizes a 1000cc Aspiration Collection Container powered by Vacuum Pumps which meet or exceed DOT ground ambulance specification criteria for both rate of flow and millimeters of vacuum provided.

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J.      Locking Drug Box

A double lock Locking Drug Cabinet, will be installed in the aft medical cabinet for secure access by medical flight personnel.

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K.      Aft Bulkhead Mounted Life Support Panel with Medical Equipment Cabinet and Brackets

An, all composite Life Support Panel and Medical Equipment Panel will be mounted to the upper bulkhead surface. The outlets for the Oxygen, Medical Air and Suction Systems will be arranged on the face of the panel as specified by the medical flight personnel. The panel extends from side to side of the bulkhead with each side including provisions for mounting patient monitoring equipment. Custom-made brackets allow for securing this patient monitoring equipment to the panel. 110V, 20Amp Electrical Outlets will also be mounted on the panel as required. The entire Life Support Panel incorporates a “quick disconnect” feature which accommodates routine cleaning and maintenance.

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L.      Overhead Storage Cabinet

A hinged Overhead Storage Cabinet for stowage of supplies/equipment is located overhead in the aft cabin area. This cabinet may be mounted on either side of the cabin, and will hold medical supplies and equipment not routinely utilized by the medical flight team.

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M.      R/H Forward Medical Cabinets

The R/H Forward Medical Cabinet constructed of composite materials will be located just aft of the pilot seat. The cabinet will be specifically designed as required by the medical flight personnel to accommodate respiratory gases, medical air and suction storage and power.

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N.      Soft Storage Pockets

Soft Storage Pockets, constructed of vinyl, will be provided and can be mounted throughout the cabin. Additional or special pocket arrangements can be recommended and quoted separately.

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O.      Blackout Curtain

A special rail constructed from an aluminum extrusion is installed above and behind the pilot and copilot seats, this rail extends from the door posts on either side of the aircraft to the central control closet and acts as a primary support for the blackout curtain. The curtain is sealed on either side by Velcro strips that are attached to the curtain and mating surfaces on the door posts and control closet. The blackout curtain separates and preserves the light integrity of the cockpit during night operations.

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P.      EMS Control Panel

The EMS Control Panel accommodates the Electrical Controls for High Intensity Cabin Lighting, Oxygen, Air and Vacuum, Loading Lights, Work Lights, Inverters, Converters and miscellaneous medical equipment. The EMS Control Panel is located on the forward bulkhead. The final design of the Panel configuration is highly dependent upon the specifications set forth by the medical flight personnel, and depends upon the individual mission requirements.

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Q      I.V. with Hooks (4 each Pans/2 each Hooks)

Four (4) I>V> pans, two on each side of the aircraft, will be installed above both the Primary and Secondary Patient locations. Each pan will have two (2) I>V> hooks each. The pans are flush mounted into the cabin interior ceiling and the hooks can be easily accessed by the medical attendants in flight as well as during the loading and unloading of a patient.

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R.      EMS Communications Console

An EMS Communications Console can be constructed to house the EMS radios required for both inflight crew communications, and aircraft to hospital communications. This padded console can be located in one of several areas on the Cabin ceiling.

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