SmartTract Journal Clinical Reference · Vol. 01 Reviewed for accuracy

Feature · Vacuum Erection Devices

A clinical guide to vacuum erection devices.

What the urology literature actually says about VEDs — the device that quietly became a first-line treatment for ED and the standard of care after radical prostatectomy. Written for men who want the evidence, not the hype.

Susan Bratton Guided by Susan Bratton Intimacy Expert · 20,000+ men coached
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SmartTract automatic vacuum erection device with cylinder and control unit

SmartTract Go · Class II Vacuum Erection Device

Chapter 01

What a vacuum erection device actually is.

A clear cylinder, a pump, and an optional tension ring. The mechanism is mechanical: lower the pressure around the penis, blood flows in, an erection follows.

A vacuum erection device, or VED, is a type of external penile rigidity device, a category described under 21 CFR §876.50201. The hardware is straightforward. A clear cylinder fits over the penis. A pump — manual or motorized — removes air from the cylinder. The negative pressure draws blood into the corpus cavernosum, the spongy tissue that fills during a natural erection. If the goal is intercourse, a tension ring at the base of the penis holds blood in place after the cylinder is removed.

The American Urological Association includes vacuum erection devices among the treatment options clinicians may discuss with men who have erectile dysfunction2. Suitability depends on the person, product, health history, and clinician guidance.

Anatomical illustration showing vacuum-induced blood flow into the corpus cavernosum
Negative pressure in the cylinder draws blood into the corpus cavernosum, the same chambers that fill during a natural erection.

Chapter 02

Who uses a VED — and why it works.

VEDs serve four distinct populations. The mechanism is the same. The protocol is not.

The clinical literature divides VED use into four major populations. Pooled efficacy across all groups in the 2025 meta-analysis was 82.9% for producing an erection firm enough for intercourse4.

Mixed-etiology ED

Mixed-etiology ED

For men whose ED has multiple drivers — vascular, neurological, age. The largest population in the literature. Pooled efficacy 82.9%.

Post-prostatectomy rehabilitation

Post-prostatectomy rehabilitation

Highest efficacy subgroup at 84.5%. Standard of care to preserve length and restore function. Protocols typically start one month post-op and continue 12 months.5

Diabetes-related ED

Diabetes-related ED

73.0% efficacy. A non-pharmacological option for men whose vascular complications make pills less reliable.

Spinal cord injury

Spinal cord injury

71.8% efficacy. Often the only effective non-implant option for men with neurogenic ED.

Chapter 03

What the science actually says.

Vacuum erection devices have four decades of peer-reviewed literature. The signal in the data is consistent.

82.9%

Pooled VED efficacy across 18 studies and 1,065 patients with mixed-etiology ED.

Zhang et al., Int J Impot Res 2025 · PMID 40542251
84.5%

Efficacy in men using VEDs after radical prostatectomy — the highest subgroup result in the meta-analysis.

Zhang et al., 2025
3%

Of men using a VED daily after radical prostatectomy saw a length loss of ≥1 cm, compared with 48% in men who did nothing.

Dalkin & Christopher, Int J Impot Res 2007 · PMID 17657210
1st-line

AUA (2018) and the 5th International Consultation on Sexual Medicine (2025) both list VEDs as a first-line ED therapy.

AUA Guideline · Stern et al., Sex Med Rev 2025
“VED therapy is typically started at one-month post-op and continued throughout the twelve-month follow-up period. All studies show improvement in erectile function scores, conservation of penile length, and satisfactory intercourses when compared with controls.”
Int J Impot Res, narrative review, 20255

Two findings recur across the literature. First, early initiation matters: men who start VED therapy within the first month after prostate surgery preserve more length and recover function faster than those who delay5,6. Second, compliance is the single biggest predictor of outcomes: men enrolled in VED-dedicated programs show better results than men handed a device with no protocol5.

The implication for product design is straightforward. A VED is only as useful as the routine you stick to. Anything that makes daily use easier — pre-set pressure profiles, app-guided sessions, two-week battery, app tracking — raises the realistic ceiling of what the therapy can deliver.

Chapter 04

How to use one safely.

A safe VED session follows the same four phases whether it's a $40 manual pump or a $400 automatic. The variables are pressure control and how easy each phase is to repeat.

  1. Prepare the seal.

    Trim hair if needed. Apply skin-safe lubricant. Seat the cylinder evenly against the body. A poor seal is the most common reason a session fails.

  2. Build vacuum gradually.

    Pressure should rise slowly. Mayo Clinic guidance: use only the vacuum needed for an erection. More pressure is not better — it causes bruising, capillary damage, and skin discoloration.7

  3. Tension ring — if used.

    For intercourse, slip the ring to the base. Mayo Clinic guidance: do not leave the ring in place longer than 30 minutes. Restricting blood flow longer can injure tissue.7

  4. Stop signals.

    Pain, numbness, cold sensation, color change, or unusual bruising are reasons to release the vacuum immediately. Men on anticoagulants, with sickle cell disease, or bleeding disorders should speak to a urologist before starting.

Chapter 05

Choosing a device worth using.

The market spans $30 squeeze bulbs to $400 app-guided systems. The difference between them is not the mechanism. It's whether you'll still be using the device in week four.

  • Controlled pressure profile. Sudden vacuum is what causes injury. Look for gradual, repeatable rise — the same every session.
  • Hands-free operation. Manual pumps occupy a hand throughout the session. Most men quit by week three because of hand fatigue, not because the therapy isn't working.
  • Cylinder fit. One diameter does not fit all. The right cylinder is what makes a good seal possible, which is what makes safe vacuum possible.
  • Battery life that survives the routine. If charging is daily, sessions get skipped. Two weeks of standby is the threshold men actually live with.
  • Tracking and routine guidance. The largest variable in outcomes is compliance. App-based tracking is what turns a device into a program.
  • A guarantee that matches the protocol. Clinical post-prostatectomy programs run 12 months. A 30-day return policy is not aligned with the therapy.

Chapter 06

Susan's recommendation.

Susan Bratton has personally guided more than 20,000 men through penis-pump routines. After a decade of working in this category, she now recommends SmartTract Go.

Susan Bratton, Intimacy Expert
Endorsed by Susan Bratton
“Fully automated, completely hands-free, and it tracks everything for you. The SmartTract Go is the next generation in effective penile optimization.”

Susan Bratton · Author, The Pumping Guide · Intimacy Expert to Millions

Susan's argument is the same as the clinical literature's: the device that produces results is the device men keep using. SmartTract removes the three things that cause men to abandon a VED routine — hand fatigue, inconsistent pressure, and no tracking — and replaces them with the three things that make a routine stick.

“This is the safest at-home VED I've reviewed.”
Dr. Rena Malik, MD · Board-Certified Urologist

Chapter 07

Clinical FAQ.

The questions urologists are asked most often about vacuum erection devices.

Is a vacuum erection device a medical device?

The FDA classifies external penile rigidity devices under 21 CFR §876.5020. Product availability and prescription status vary by manufacturer and configuration; a category reference does not establish a specific product's clearance or approval.

How effective are VEDs?

The 2025 meta-analysis of 1,065 patients across 18 studies reported pooled efficacy of 82.9%. Subgroup efficacy ranged from 71.8% (spinal cord injury) to 84.5% (post-prostatectomy).

When should VED therapy start after prostate surgery?

Most published protocols start one month post-op and continue daily for 12 months. Earlier initiation correlates with better length preservation and faster functional recovery in the literature.

Can a VED be used with PDE5 inhibitors (Viagra, Cialis)?

Yes. Combination therapy of VED + PDE5I is specifically recommended in the post-prostatectomy rehabilitation literature. The 5th ICSM 2025 recommendations support combination approaches.

What are the contraindications?

Anticoagulant therapy, sickle cell disease, and bleeding disorders are relative contraindications. Men in these groups should consult a urologist before starting VED therapy.

How is SmartTract Go different from a basic VED?

SmartTract is an automatic, app-guided VED with three pressure modes (pulsating, rapid interval, static), two-week battery, session tracking, and a 180-day guarantee. It is designed for the daily, multi-month routines the clinical literature actually requires.

References

  1. FDA, 21 CFR §876.5020 — External Penile Rigidity Devices. FDA.gov
  2. American Urological Association. Erectile Dysfunction Guideline (2018). J Urol 200(3):633-641.
  3. Stern et al. 5th International Consultation on Sexual Medicine recommendations on the management of erectile dysfunction. Sex Med Rev, 2025. PMID 40753504
  4. Zhang et al. Efficacy of vacuum erection devices for ED: a systematic review and meta-analysis. Int J Impot Res, 2025. PMID 40542251
  5. Narrative review: The role of vacuum erection device and penile traction therapy after radical prostatectomy. Int J Impot Res, 2025. PMID 40442485
  6. Dalkin BL, Christopher BA. Preservation of penile length after radical prostatectomy: early intervention with a vacuum erection device. Int J Impot Res, 2007. PMID 17657210
  7. Mayo Clinic. Penis pump. mayoclinic.org

The VED that actually gets used.

SmartTract Go is the automatic, app-guided vacuum erection device designed for the daily routine the clinical literature actually requires. Recommended by Susan Bratton. Reviewed by Dr. Rena Malik, MD. Backed by a 180-day money-back guarantee.

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SmartTract Go complete bundle contents
What makes it different

Wear it, press start, stay consistent

Vacuum training only works when it is done consistently. SmartTract Go runs the whole session for you, so the habit fits your life instead of fighting it.

Your body, your routine

Every man is different, but most pumps force one preset pattern. SmartTract lets you build the routine your body responds to from the device or the app.

Targets tissue, not just skin

Pulsating and Rapid Interval modes vary pressure instead of relying only on a constant hold. Sessions remain within defined software pressure limits and retain an accessible manual release.

The SmartTract app & device

Build your own routines

Create and save custom pumping sequences that fit how you train.

SmartTract training programs

Guided, structured programs designed by our team to follow.

Community routines

Discover sequences created and shared by other SmartTract users.

Pressure & tolerance tracking

Watch your pressure tolerance and session numbers trend over time.

Kegel training

Pair pelvic-floor work with your sessions in one place.

Progress & consistency

Charts show your improvement and keep you on track.

Guided sessions

On-screen pacing and timing for every routine you run.

Updates after you buy

Over-the-air upgrades add features to both device and app.

How a session works
1

Pick or build a routine

Choose a SmartTract program, a Community Routine, or design your own in the app.

2

Wear it and press start

The device runs the full session hands-free, at your set pressure and pace.

3

Track and improve

Pressure, consistency, and progress sync to the app so you see what is working.

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