Non-Disposable Bibs
Non-Rebreather Mask (Adult)
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Purpose & Use
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A non-rebreather mask (NRM) is a high-flow oxygen delivery device used in emergencies or critical care to deliver high concentrations of oxygen (60–100%).
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Commonly used for patients with severe hypoxia, respiratory distress, or trauma.
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Designed to prevent exhaled air from mixing with oxygen, ensuring maximum oxygen delivery.
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Structure & Components
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Mask: fits over the nose and mouth with a soft, flexible cushion for comfort and minimal leakage.
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Reservoir bag: attached to the mask, holds a supply of oxygen for inhalation.
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One-way valves:
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Between the mask and reservoir bag to allow inhalation of pure oxygen.
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On exhalation ports to prevent rebreathing of exhaled air.
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Elastic straps: secure the mask to the patient’s face.
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Oxygen tubing connector: attaches to oxygen sources or flowmeters.
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Performance & Flow Rate
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Delivers high oxygen concentrations (up to 100%) when properly fitted.
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Requires oxygen flow of 10–15 L/min to keep the reservoir inflated and ensure effectiveness.
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One-way valves prevent rebreathing of CO₂, unlike simple masks.
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Advantages
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Provides maximum oxygen delivery in emergencies without intubation.
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Simple, lightweight, and easy to apply.
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Rapidly increases oxygen saturation in hypoxic patients.
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Disposable and single-patient use reduces infection risk
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Non-Rebreather Mask (Paediatric)
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Purpose & Use
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A paediatric non-rebreather mask is used to deliver high concentrations of oxygen (60–100%) to children and infants experiencing severe hypoxia, respiratory distress, or trauma.
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Designed to prevent exhaled air from mixing with supplied oxygen, ensuring maximum oxygen delivery to the patient.
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Target Patient Population
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Sized specifically for neonates, infants, and children.
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Fits appropriately to cover the nose and mouth of smaller patients without excessive dead space.
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Structure & Components
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Mask: soft, flexible material to ensure comfort and minimal leakage.
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Reservoir bag: smaller than adult versions, stores oxygen for inhalation.
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One-way valves:
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Between the mask and reservoir bag to allow inhalation of oxygen only.
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On exhalation ports to prevent CO₂ rebreathing.
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Elastic or Velcro straps: adjustable to secure mask on a child’s face.
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Oxygen tubing connector: connects to an oxygen source.
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Performance & Flow Rate
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Provides high oxygen concentration (up to 100%) when properly fitted.
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Oxygen flow typically 10–15 L/min for older children, and 5–10 L/min for infants depending on size.
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One-way valves prevent rebreathing of CO₂.
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Advantages
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Rapidly increases oxygen saturation in paediatric patients.
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Simple and effective high-flow oxygen delivery without intubation.
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Disposable, reducing the risk of cross-contamination.
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Lightweight and easy to apply to small patients.
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Usage Guidelines
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Ensure proper fit to minimize leaks.
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Connect to appropriate high-flow oxygen source based on patient size.
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Monitor oxygen saturation, respiratory rate, and comfort continuously.
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Check that the reservoir bag remains partially inflated during inspiration.
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Used as a short-term intervention until more definitive airway support is available if needed.
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Non-Setting Calcium Hydroxide
Non-Woven Wound Dressing (10cm by 25cm)
Normal Saline (NS)
Indications / Uses
Normal Saline is commonly used for:
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Dehydration
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Shock / hypovolemia
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Fluid maintenance
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Dilution of IV medications
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Flushing IV lines
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Blood transfusion compatibility
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Diabetic ketoacidosis (initial fluid)
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Sodium depletion (hyponatremia)
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Replacing gastrointestinal fluid loss
Contraindications / Use with Caution
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Heart failure (risk of fluid overload)
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Kidney failure (risk of sodium and fluid retention)
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Hypernatremia
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Edema
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Metabolic acidosis (Normal saline may worsen acidosis)
Nurse’s Stethoscope
Nursing Scissors
Nylon Suture (Dozen Pack – All Sizes)
Nylon Sutures
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Purpose & Use
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Nylon sutures are synthetic, non-absorbable sutures used for closing skin, soft tissue, or surgical wounds.
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Common in general surgery, plastic surgery, and minor procedures.
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Often chosen for their high tensile strength and minimal tissue reaction.
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Material & Properties
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Made of nylon (polyamide), which is strong, smooth, and flexible.
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Monofilament or braided forms:
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Monofilament: single strand, less tissue drag, lower infection risk.
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Braided: multiple fibers twisted together, stronger knot security but slightly higher infection risk.
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Non-absorbable — stays in tissue until removed.
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Sizes & Classification
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Nylon sutures come in various sizes, typically ranging from 6-0 (very fine, used in delicate tissue like the face) to 5 or 4 (thicker, used in heavy tissue like fascia).
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Size selection depends on tissue type, wound location, and desired cosmetic outcome.
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Needles
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Supplied pre-attached to surgical needles.
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Needle types:
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Curved needles (most common for internal tissues).
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Straight needles (used in skin or minor procedures).
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Needle shapes vary: reverse cutting, taper point, or cutting, depending on tissue type.
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Packaging & Sterility
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Usually individually sterile-packed, ready for use.
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Available in single units or boxes containing multiple sutures of the same or mixed sizes.
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Safety & Handling
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Handle with sterile technique to avoid contamination or infection.
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Non-absorbable — must be removed after wound healing (typically 5–14 days for skin, depending on location).
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Olympus CX21 Microscope
Key Features
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Optical System:
Uses the UIS2 (Universal Infinity System) optical design, which ensures bright, flat, and high-contrast images across the entire field of view. The optics are compatible with various objectives and accessories used in advanced Olympus systems. -
Objectives:
Typically equipped with Plan Achromat objectives (4×, 10×, 40×, and 100× oil immersion). These provide sharp and evenly illuminated images suitable for both brightfield observation and training. -
Eyepieces:
Standard 10× widefield eyepieces with a field number of 20 mm, allowing comfortable, wide viewing with minimal eye strain. -
Illumination:
Features a 6V 20W halogen lamp with adjustable brightness and built-in illumination control. Some models include a daylight filter to maintain consistent color balance. -
Condenser and Diaphragm:
Equipped with an Abbe condenser (NA 1.25) and an iris diaphragm for proper light control and contrast adjustment. -
Focusing Mechanism:
Coaxial coarse and fine focusing knobs with tension adjustment, allowing precise focusing control. The stage movement and focusing are smooth and ergonomic for extended use. -
Stage:
The mechanical stage is low-positioned for comfort, with X-Y coaxial controls. It typically measures around 130 mm × 160 mm and includes slide holders for accurate specimen movement. -
Frame and Build:
Compact, sturdy, and designed for long-term reliability. The microscope body is made from durable aluminum alloy to resist wear in high-use environments. -
Observation Head:
Binocular head inclined at 30° for comfort and fixed at a height ideal for seated use. The interpupillary distance and diopter can be adjusted to match different users. -
Portability:
Weighs approximately 6.5 kg, with a built-in carrying handle, making it easy to move between classrooms or laboratory stations.
