Medical equipment data
Page data
Part of STARS - Intrauterine Device (IUD) Insertion
Type Medical equipment
Keywords long-acting reversible contraception, intrauterine device, intrauterine contraceptive device, IUD, IUCD, copper IUD, hormonal IUD, levonorgestrel-releasing intrauterine system, LNG-IUS
SDG Sustainable Development Goals SDG03 Good health and well-being
Authors Medical Makers
Published 2021
License CC-BY-SA-4.0
Affiliations Medical Makers
Impact Number of views to this page. Views by admins and bots are not counted. Multiple views during the same session are counted as one. 252

The STARS (Sexual and Reproductive Health and Rights) - Intrauterine Device (IUD) Insertion module's Cervix and Vaginal Canal (with Augmented Feedback) Simulator will allow nurses, midwives and clinical officers to become confident and competent in maintaining aseptic technique in sounding the uterus, loading the IUD in the sterile package, setting the gauge to the sounded depth, and gently inserting and deploying the IUD as part of copper and hormonal IUD insertion procedures performed in low to middle income countries. The Cervix and Vaginal Canal (with Augmented Feedback) Simulator contains 3 componentsː (1) Nulliparous Cervix, (2) Parous Cervix, and (3) Vaginal Canal with Augmented Feedback.

Cervix Models[edit | edit source]

Cervix Dimensions and Appearance[edit | edit source]

The cervix models match the published dimensions on cervical width and length for nulliparous and primiparous women.[1] The average cervix width for nulliparous women is 25.51 mm and average cervix length for nulliparous women is 29.18 mm. The average cervix width for primiparous women is 28.18 mm and average cervix length for primiparous women is 31.89 mm.

The cervixes are also designed to simulate the appearance of the os of nulliparous and parous cervixes.[2]

Nulliparous Cervix[edit | edit source]

1
Collect Supplies

You will need the following materials:

  • Light Pink Clay
  • Ruler
  • Pencil or Chopstick
The clay should be a oil-based (stiffer) modelling clay, like Crayola Modelling Clay.
2
Make a Nulliparous Cervix
Roll pink clay into a cylinder 2.5 cm in diameter and 3 cm long.
3
Create the Os
Insert a pencil tip or chopstick through the center of the pink clay cylinder to simulate the smooth, rounded os of the nulliparous cervix.
4
Attach Cervix to Uterus Simulator
Mount the Nulliparous Cervix model on the pegs of the 3D Printed Uterus Simulator.

Parous Cervix[edit | edit source]

1
Collect Supplies

You will need the following materials:

  • Light Pink Clay
  • Ruler
  • Pencil or Chopstick
The clay should be a oil-based (stiffer) modelling clay, like Crayola Modelling Clay.
2
Make a Parous Cervix
Roll clay into a cylinder 3 cm in diameter and 3 cm long.
3
Create the Os
Use the tip of the pencil or chopstick to create the "fish mouth" appearance of the wider os of a parous cervix.
4
Attach Cervix to Uterus Simulator
Mount the Parous Cervix model on the pegs of the 3D Printed Uterus Simulator.

Vaginal Canal with Augmented Feedback[edit | edit source]

Vaginal Dimensions[edit | edit source]

The diameter of the opening of a disposable pelvic speculum commonly used in an Ugandan hospital was measured by the Team Lead as 4.5 cm.

The upper range of linear vaginal length is 95.0 mm from the introitus to the cervix.[3] The Pederson medium speculum is 10.0 cm in length, and is an acceptable fit for many patients.

The vaginal canal is designed to be 4.5 cm in diameter, 14.0 cm in circumference, and 13.0 cm long (10.0 cm + 3.0 cm) to account for the vaginal length and cervix length.[1][3]

Materials[edit | edit source]

  • Paper
  • Aluminum Foil
  • Scissors
  • Alligator Clips
  • Tape
  • Ruler
  • Buzzer
  • 9 V Battery

Assembly Video Instructions[edit | edit source]

IUD Insertion Simulator[edit | edit source]

Materials[edit | edit source]

  • 3D Printed Uterus Simulators (with 5.0, 7.0, and 10.0 cm uterine depths)
  • Nulliparous and Parous Cervix Models
  • Vaginal Canal (with Augmented Feedback)
  • Metal Uterine Sound
  • Alligator Clip

Assembly Video Instructions[edit | edit source]

References[edit | edit source]

  1. 1.0 1.1 Londero AP, Bertozzi S, Fruscalzo A, Driul L, Marchesoni D. Ultrasonographic assessment of cervix size and its correlation with female characteristics, pregnancy, BMI, and other anthropometric features. Arch Gynecol Obstet. 2011 Mar;283(3):545-50. doi: 10.1007/s00404-010-1377-5. Epub 2010 Feb 10. PMID: 20145939.
  2. Atlas of Colposcopy: Principles and practice [Internet]. Colposcopy Digital Atlas. World Health Organization; [cited 2021 Dec 11]. Available from: https://screening.iarc.fr/atlascolpodetail.php?Index=13&e=. 
  3. 3.0 3.1 Bates CK, Carroll N, Potter J. The challenging pelvic examination. J Gen Intern Med. 2011 Jun;26(6):651-7. doi: 10.1007/s11606-010-1610-8. Epub 2011 Jan 12. PMID: 21225474; PMCID: PMC3101979.