Biological Welding in Circumcision: Is it Safe?

Circumcision, one of the oldest surgical procedures, dating back thousands of years to ancient Egyptian and religious practices, involves the removal of the penile foreskin to expose the glans penis. Today, it remains a common outpatient procedure, typically performed as day surgery with patients discharged the same day.

Globally, about 38% of males are circumcised, driven by medical, cultural, and personal motivations. Medical indications include phimosis (tight foreskin), paraphimosis (trapped foreskin), and recurrent urinary tract infections, where circumcision can reduce UTI risk by up to 90% in infants. It also lowers the risk of sexually transmitted infections, such as HIV (by 50–60% in heterosexual men) and HPV, and reduces penile cancer risk, a rare condition. Non-medical circumcision is often performed for religious or cultural reasons, particularly in Jewish and Muslim communities, or for personal preferences like improved hygiene, reduced odor, or cosmetic appeal.

 

What is Biological Welding in Circumcision?

Biological welding in circumcision is an advanced surgical technique that uses a specialized thermal device, typically delivering high-frequency electrical current or laser energy, to simultaneously cut and fuse penile tissue. Applied at the incision site, the device heats the tissue to 60–80°C, denaturing collagen and other proteins to create a strong, elastic seal without sutures. This process ensures immediate hemostasis, eliminating intraoperative bleeding, and promotes a seamless closure. Unlike traditional circumcision methods, which rely on stitches or clamps and carry a 0.2–5% complication rate, biological welding reduces operative time to 3–5 minutes and accelerates healing to 3–7 days. This innovative, bloodless approach minimizes infection risk and thermal damage, offering a safer, faster alternative for circumcision.

 

What are the Benefits of Biological Welding in Circumcision?

Biological welding circumcision offers a transformative approach, surpassing traditional methods in safety, efficiency, and patient comfort. Its key advantages include:

• Bloodless Procedure: Employs high-frequency electrical current or laser energy to fuse tissue, eliminating intraoperative bleeding, unlike traditional methods, with a 0.2–5% bleeding risk. In clinical studies, biological welding circumcision had virtually zero blood loss, as compared to the average blood loss of 22.35 ± 5.17ml in the traditional cut-and-suture technique.

 

• Reduced Operative Time: In clinical studies, biological welding circumcision significantly shortens the surgical duration, with an average of 2.33 ±55 minutes compared to 27.06 ± 5.77 minutes for traditional cut-and-suture techniques. This reduces anesthesia exposure and patient discomfort during the procedure, enhancing patient safety.

 

• Faster Healing: Full epithelialization and healing was 12.33 ± 3.5 days when biological welding circumcision was performed, as compared to 16.5 ± 2.57 days when the conventional circumcision technique was employed. This enables faster recovery and reduced discomfort for patients.

 

• Lower Infection Risk: Forms a seamless, antimicrobial-resistant tissue seal, reducing postoperative infections and complications.

 

• Minimal Pain and Scarring: Pathological analysis in a study conducted by Zeng et al. confirmed that the thermal injury range when biological welding was employed for circumcision was only 2mm; this limits thermal damage to surrounding tissues, unlike thermocautery, resulting in less discomfort and cosmetic scarring.

 

• Local Anesthesia Feasibility: As biological welding circumcision is a quick, precise and minimally invasive procedure, the procedure can likely be performed under local anaesthesia, unlike traditional circumcision techniques which would require general anaesthesia for patient comfort.

 

What are the Potential Complications of Biological Welding in Circumcision?

Biological welding circumcision is a promising technique with a strong safety profile, but as an emerging method, it carries potential complications, though less frequent than traditional methods (0.2–5% complication rate). The following outlines key risks based on available evidence:

• Thermal Injury: Improper calibration of the high-frequency electrical or laser device can cause localized burns or tissue necrosis if the temperature exceeds 80°C, though studies report minimal damage with precise application and the thermal injury zone on pathological examination was only 2mm.

 

• Incomplete Tissue Fusion: Rare cases of inadequate welding may lead to minor wound dehiscence, requiring secondary closure, though the 2024 World Journal of Urology study reported no such issues.

 

• Infection: While the sealed weld reduces infection risk compared to sutures, improper postoperative care could still introduce infection, particularly in non-sterile settings.

 

• Long-Term Unknowns: As an experimental technique, long-term outcomes are unstudied in humans, necessitating further research.

 

• Contraindications: Unsuitable for patients with penile anomalies (e.g., hypospadias) or active infections, as these may complicate welding efficacy.

The 2024 study reported no significant complications in animal trials, suggesting a lower risk profile than traditional circumcision, but human trials are needed to confirm safety.

 

Should Biological Welding be used for Circumcision?

Biological welding, a technique using high-frequency electrical current or laser energy to fuse tissues, has shown promise across various surgical fields, including esophageal, vascular, and gastrointestinal procedures. For instance, a 2020 clinical study on Barrett’s esophagus demonstrated that biological welding accelerated mucosal healing (53 days vs. 115 days for argon plasma coagulation), enabling faster progression to antireflux surgery without complications like bleeding or strictures. In vascular surgery, it facilitates sutureless microvascular anastomoses, reducing thrombosis risk, while in gastrointestinal repairs, it minimizes leak rates. For circumcision, biological welding offers significant advantages, as shown in a 2024 World Journal of Urology study on animal models, achieving a bloodless procedure with a surgical time of 2.33 ± 0.55 minutes versus 27.06 ± 5.77 minutes for cut-and-suture methods. However, no human studies currently confirm its safety or efficacy for circumcision, limiting its clinical adoption.

Thermocautery-assisted circumcision utilizes controlled thermal energy, similar to biological welding, to excise the foreskin and cauterize blood vessels, significantly reducing intraoperative bleeding compared to traditional cut-and-suture methods, which carry a 0.2–5% bleeding risk. Devices like the MediGare TM 802-B (Thermo Medical, Istanbul, Turkey) deliver precise heat to cut tissue and seal vessels, shortening operative time to approximately 10–15 minutes, compared to 15–30 minutes for conventional techniques. Unlike biological welding, which achieves sutureless tissue fusion, thermocautery requires sutures for wound closure, increasing the risk of suture-related complications such as infection or dehiscence (1–2% incidence) and extending healing time to 7–14 days. Moreover, in Singapore, the MediGare TM 802-B lacks approval from the Health Sciences Authority (HSA), limiting its availability and clinical use.

Device-assisted circumcision, including Shang Ring and stapler methods, offers safe, efficient alternatives to conventional circumcision, sharing similarities with biological welding’s efficiency. These technique is preferred method in the Clifford Clinic, as they are HSA-approved devices and can simultaneously cut the foreskin and seal wound edges, reducing operative time to 7–15 minutes versus 15–30 minutes for traditional methods. A 2019 study reported complication rates of 1–2%, lower than the 0.2–5% for cut-and-suture techniques, with rare issues like minor bleeding or infection. Unlike biological welding, which remains experimental for circumcision, the Shang Ring and stapler methods are clinically validated and use mechanical devices rather than thermal fusion. They can be performed under local anesthesia, minimizing discomfort and anesthesia risks. Their HSA approval ensures regulatory compliance, making them reliable for medical and elective circumcisions in Singapore.

 

Conclusion

While biological welding circumcision shows transformative potential with its bloodless, sutureless approach and rapid operative time (2.33 ± 0.55 minutes), its lack of human studies limits its current clinical use. Thermocautery-assisted circumcision, though effective in reducing bleeding, requires sutures and lacks Health Sciences Authority (HSA) approval in Singapore, increasing complication risks (1–2%) and healing time (7–14 days). In contrast, device-assisted circumcision, including Shang Ring and stapler methods, offers a proven, HSA-approved alternative with shorter operative times (7–15 minutes), lower complication rates (1–2%), and the ability to perform under local anesthesia for minimal discomfort. These methods combine efficiency, safety, and regulatory compliance, making them the preferred choice for both medical and elective circumcisions. The Clifford Clinic, renowned for its expertise in using these validated techniques, stands as an ideal destination for safe, high-quality circumcision in Singapore.