A Vaginal Speculum is a medical instrument used in gynaecology to dilate the vaginal canal, allowing visual and physical access to the cervix and vagina during examinations, diagnostics, and minor procedures. It plays a key role in Pap smears, IUD insertions, colposcopy, and biopsies. Available in multiple sizes, it allows selection based on patient anatomy (nulliparous, multiparous, or postmenopausal) or clinical requirement.

•   Sizes Available: 4, 5, 6, 8, 10, 12, 14

•   Type: Bivalve or Duckbill

•   Design: Adjustable screw or ratchet lock

•   Blades: Smooth, rounded ends for patient comfort

•   Opening Mechanism: Self-retaining or manual

•   Sterilization: Autoclavable (metal), Pre-sterilized (plastic)

•   Usage: Reusable (SS) or Disposable (plastic/polymer)

Size              Blade Width (mm)              Blade Length (mm)                Patient Type / Use

4                       18–20 mm                           75–80 mm                           Paediatric / Narrow vaginal canal

5                      20–22 mm                           85 mm                                  Small-framed adults / Virginal use

6                      22–24 mm                            90 mm                                  Average nulliparous woman

8                       24–26 mm                             95 mm                                  Multiparous / General adult use

10                     26–28 mm                            100 mm                                 Postnatal or slight prolapse cases

12                   28–30 mm                           105 mm                                 Advanced gynaecological procedures

14                  30–32 mm                           110–115 mm                          Obese patients / Surgical access

Measurements may slightly vary based on manufacturer.

•   Graves Speculum: Broad blades, used in general gynaecology

•   Cusco's Speculum: Self-retaining bivalve; popular in clinics

•   Pederson Speculum: Narrow blades; ideal for virginal or elderly patients

•   Sims Speculum: Single-blade, non-self-retaining; used with retractor

•   Disposable Speculum: Made from transparent medical-grade plastic

•  Reusable:

o  Medical/Surgical grade stainless steel (SS 304/316)

o  Corrosion-resistant, autoclavable

•  Disposable:

o  BPA-free, transparent medical-grade plastic (polycarbonate)

o  Individually packed and pre-sterilized

•   OB/GYN Instruments

•   Diagnostic Gynaecology Tools

•   Outpatient & Surgical Examination Instruments

•   Form: Scissor-like with screw or ratchet lock mechanism

•   Blade Design: Smooth, rounded, and atraumatic

•   Control: Finger rings or thumb press (on disposable units)

•   Routine pelvic exams

•   Visual inspection of cervix

•   Papanicolaou (Pap) smear testing

•   IUD insertion and removal/ Vaginal cervical swab collection

•   Colposcopy and cervical biopsy

•   Multiple sizes ensure accurate patient fit

•   Reusable options are durable and cost-effective

•   Disposable models eliminate cross-contamination risk

•   Adjustable opening for customizable access

•   Stainless steel offers long shelf-life and high heat resistance

•   Improper size may cause patient discomfort

•   Cold metal may cause unease (unless pre-warmed)

•   Overuse without lubrication may lead to mucosal injury

•   Requires trained personnel to use properly

•   Choose the right size based on patient history

•   Lubricate properly to avoid mucosal trauma

•   Pre-warm metal speculum for comfort

•   Use sterilized instrument (or sealed disposable)

•   Avoid overexpansion to prevent cervical trauma

•   HS Code: 9018.90 – Instruments and appliances for medical or veterinary use

•   HSN Code (India): 9018.90.99 – Other medical instruments (includes speculums)

Handling & Sterilization Details

o   Clean thoroughly post-procedure with enzymatic detergent

o   Sterilize via autoclave (121°C for 15–20 min) or EO gas

o   Inspect lock and blade for damage before reuse

•   Disposable (Plastic):

o   Use one time only/ Discard in biohazard bin after use

•   Used for canine, feline, bovine, and equine gynaecological exams

•   Helps with vaginal cytology, AI procedures, and visual inspection

•   Large-size specula (sizes 10–14) used in farm and large animal practices

•   Critical for vaginal prolapse assessment and reproductive health checks

•   Standard instrument for pelvic and cervical examinations

•   Used across hospitals, clinics, and OB/GYN practices

•   Critical in women’s health screenings such as cervical cancer detection

•  Sizes vary to accommodate virginal, post-menopausal, pregnant, and obese patients

Q1: How do I choose the correct vaginal speculum size?

A1: It depends on the patient’s age, parity, anatomy, and purpose of exam. Sizes 4–6 for narrow

anatomy, 8–10 for general use, 12–14 for larger anatomy or surgical access.

Q2: What’s the difference between metal and plastic speculums?

A2: Metal is reusable and autoclavable; plastic is disposable, lightweight, and pre-sterilized.

Q3: Is it safe to use a speculum without lubrication?

A3: Lubrication is recommended to reduce discomfort and avoid mucosal injury.

Q4: Can veterinary speculums be reused?

A4: Yes, stainless steel versions are reusable and sterilizable, commonly used in animal clinics and

farms.

Q5: Are all speculums self-retaining?

A5: No. Cusco's are self-retaining, while Sims speculum requires an assistant or retractor.