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LENJEX industrial ultrasonic cleaning equipment
Medical instruments being cleaned in an ultrasonic bath

LENJEX Industrial Cleaning

Medical & Dental Instruments Ultrasonic Cleaning

Ultrasonic cleaning removes blood, tissue and contamination from surgical and dental instruments, including box locks, serrations and lumens, before sterilization.

Why Ultrasonic

Ultrasonic cleaning for Medical & Dental

Surgical and dental instruments rely on thorough cleaning before sterilization, because organic soil can shield microorganisms from the sterilant. Ultrasonic cavitation penetrates box locks, hinges, serrations, cannulas and lumens that manual brushing cannot reach consistently.

An enzymatic or instrument cleaning solution is commonly used in a heated bath, with baskets that separate instruments and lids that contain aerosols. The laboratory ultrasonic cleaner and heated general-purpose cleaner platforms are adapted for the instrument type and volume.

Note that the equipment cleaning stage must be validated and used within the facility's defined reprocessing workflow; it does not replace sterilization.

Instrument cleaning accessories and baskets
  • Reaches hinges, serrations, box locks and lumens
  • Removes blood, tissue and organic contamination before sterilization
  • Reduces reliance on manual brushing and sharps handling
  • Separated baskets protect instruments and staff
  • Consistent, repeatable cycles for reprocessing

Typical Workpieces

Parts in this application

  • Surgical forceps and clamps
  • Dental burs, handpieces and scalers
  • Hinged and box-lock instruments
  • Cannulas and instruments with lumens
  • Orthopedic and dental instruments
  • Stainless trays and reusable tooling

Contamination

Soils to evaluate

  • Blood and tissue residues
  • Biological and protein contamination
  • Dental cement and packing material
  • Saline and handling residues
  • Polishing and machining compounds (new parts)
Inspection of cleaned instruments

Cleanliness Target

Define clean before choosing equipment

Cleaned instruments are visually inspected before sterilization, with no visible organic residue or deposits in hinges and lumens.

Cycle parameters, chemistry and loading follow the facility's validated reprocessing procedure.

Recommended Sequence

A process route for evaluation

The final sequence depends on soil loading, material, rinse quality and drying behavior.

  1. Step 1Pre-rinse and pre-soak to prevent soil drying
  2. Step 2Ultrasonic clean with enzymatic or instrument solution
  3. Step 3Thorough rinse to remove chemistry and debris
  4. Step 4Inspect and dry before sterilization
  5. SterilizeSterilize using the validated facility method

Recommended Equipment

Systems to compare

The final specification follows process testing and production analysis.

Process Controls

Control the variables that change the cleaning result

Confirm the part, soil, loading and final handling before fixing equipment settings.

Control 01

Material and geometry

Record surfaces, cavities and features that can trap air or liquid.

Control 02

Soil condition

Test the heaviest representative contamination, not an ideal sample.

Control 03

Basket loading

Keep acoustic access and part spacing consistent with production.

Control 04

Rinse and drying

Match downstream handling to residue and corrosion risks.

System Selection

Match the cleaning route to production flow

Stage count and automation follow the validated process and required output.

Batch

Single-tank route

Compare for focused washing where rinsing and drying are managed separately.

Multi-stage

Wash, rinse and dry

Add controlled stages when carryover and final condition matter.

Automatic

Repeatable transfer

Evaluate automation when output, handling or recipe control requires it.

Acceptance

Define how the cleaned part will be checked

Use the same practical inspection method for trial samples and production parts.

  • Agree the surface or residue limit
  • Check hidden and difficult features
  • Record rinse, drying and handling conditions
  • Compare results before the next operation

Representative Trial

Confirm the process with real parts and loads

Trial evidence should cover normal production and the most difficult expected condition.

  1. DescribePart, material and contamination.
  2. LoadUse realistic spacing and orientation.
  3. TestRecord chemistry, time and temperature.
  4. VerifyInspect with the agreed method.
Plan a cleaning trialSend project details

Application Questions

Planning the cleaning study

Related Applications

Explore adjacent workpieces