Why Is A Double Pass Scanning Technique Performed At 1 And 11 O’clock? Maximize Vaginal Laser Treatment Results

The strategic application of a double pass at the 1 and 11 o’clock positions is a targeted maneuver designed to reinforce the sub-urethral support structures. By deliberately increasing the thermal energy delivered to these specific zones, the procedure strengthens the tissue immediately surrounding the mid-urethra, which is critical for maintaining urinary control.

Core Takeaway The 1 and 11 o'clock positions align directly with the sub-urethral anatomy. Doubling the laser energy at these points creates a "localized reinforcement," providing a stable backstop that allows the urethra to close effectively during moments of high physical pressure.

The Physiology of Support

Targeting the Sub-Urethral Zone

The vaginal canal is not mechanically uniform; specific areas play distinct roles in pelvic floor function. The 1 and 11 o'clock positions are not arbitrary; they correspond to the sub-urethral support structures.

These anatomical locations act as the foundation for the mid-urethra. By isolating these vectors for additional treatment, the procedure moves beyond general tightening and addresses the specific biomechanics of urethral stability.

The Role of Thermal Energy

The mechanism of action relies on the precise delivery of thermal energy. A single pass creates a baseline effect, but a double pass significantly increases the energy density in the target tissue.

This concentrated energy induces localized tissue reinforcement. The goal is to stimulate a robust tissue response specifically where the urethra relies on the vaginal wall for support.

Functional Improvements

Creating a Stable Backing

For the urethra to function correctly, it requires a firm surface against which it can compress. Without this "backstop," the urethra cannot close tightly.

The double pass technique ensures that the tissue at 1 and 11 o'clock becomes denser and more supportive. This provides a stable anatomical backing, preventing the urethra from remaining open or hyper-mobile.

Resisting Intra-Abdominal Pressure

The ultimate test of this support occurs during activities that spike internal pressure, such as coughing, sneezing, or lifting.

The primary reference notes that this technique significantly improves urethral closure function during these periods of high intra-abdominal pressure. The reinforced tissue acts as a buttress, allowing the urethra to maintain closure despite the increased load.

Common Pitfalls in Application

The Error of Uniform Treatment

A common misconception is viewing the vaginal wall as a cylinder that requires uniform energy distribution throughout.

Treating the entire circumference equally is a strategic error. If the 1 and 11 o'clock positions receive only a single pass like the rest of the tissue, the sub-urethral support remains under-treated relative to its mechanical burden.

Precision vs. Generalization

The trade-off in this technique is the requirement for anatomical precision. The operator cannot simply scan the area generally; they must accurately identify the 1 and 11 o'clock vectors.

Failure to precisely target these zones results in wasted thermal energy on non-critical tissue, while leaving the high-stress sub-urethral zone with insufficient reinforcement to withstand high pressure.

Making the Right Choice for Your Goal

To maximize the functional outcomes of the procedure, the treatment protocol must align with the patient's specific anatomical needs.

If your primary focus is stress urinary incontinence: Ensure the protocol includes the double pass specifically at 1 and 11 o'clock to maximize urethral closure function.
If your primary focus is general anatomical stability: Prioritize the creation of a firm sub-urethral backstop to support the mid-urethra against intra-abdominal pressure.

By concentrating energy where the biomechanical load is highest, you transform a general procedure into a functional restoration of the sub-urethral support system.

Summary Table:

Feature	Single Pass (General)	Double Pass (1 & 11 o’clock)
Target Area	Full vaginal circumference	Specific sub-urethral vectors
Thermal Density	Baseline energy level	Concentrated high energy
Primary Goal	General tissue tightening	Urethral closure & stability
Clinical Benefit	Improved elasticity	Resistance to pressure (sneezing/coughing)
Mechanism	Uniform collagen stimulation	Strategic anatomical reinforcement

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References

Falguni Patel. The Effects of RF Excited Fractional CO2 Laser on the Vaginal Canal in Treating Stress Urinary Incontinence [2G]. DOI: 10.1097/01.aog.0000514867.14118.c5

This article is also based on technical information from Belislaser Knowledge Base .