​​​​​​​​​​​​​鍾經略醫生【皮膚科碩士 x 美容醫學碩士】課程研究​

​​​​地址 香港中環皇后大道中9號嘉軒廣場

電話 Tel  23630598（註 6 Note 6）

Address: the Galleria, No. 9 Queen's Road Central, Hong Kong

（1）脫墨案例/價錢（2）脫墨影片（3）最新脫墨資訊​ （4）脫墨（其他題目）     ( 1 ) Everything about mole removal  ( 2 ) Case studies & Surgical fees of diff moles  ( 3 ) Mole removal videos  ( 4 ) Other topics on mole removal  

Why UltraPulse CO₂ Laser Is Superior for Benign Skin Mole Removal

The removal of benign pigmented skin moles (melanocytic nevi) demands a balance between complete eradication of melanocytes and preservation of surrounding healthy tissue to avoid scarring, pigmentary changes, or damage to critical structures like hair follicles—especially in cosmetically sensitive areas such as the face or neck. Among the various CO₂ laser modalities, UltraPulse CO₂ laser stands out as the gold standard, offering significant advantages over both Continuous Wave (CW) and SuperPulse CO₂ lasers.

Continuous Wave CO₂ laser, the earliest form, emits a constant, uninterrupted beam of energy. While effective at vaporizing tissue, it causes prolonged heat diffusion, resulting in a wide zone of thermal damage (often exceeding 500 µm). This uncontrolled thermal injury destroys not only the mole but also surrounding collagen, nerves, and hair follicles, leading to high risks of scarring, hypopigmentation, and poor cosmetic outcomes. Consequently, CW mode is now largely obsolete for benign lesion removal.

SuperPulse CO₂ laser improved upon CW by delivering high-energy pulses in millisecond durations with brief cooling intervals. This reduces average heat buildup and narrows the thermal damage zone to about 50–150 µm. However, the pulse duration is still too long for precise control at the microscopic level. As a result, SuperPulse can inadvertently ablate beyond the target depth, risking incomplete removal (leading to recurrence) or unnecessary injury to the dermis and adnexal structures.

In contrast, UltraPulse CO₂ laser delivers extremely short pulses—typically 200 to 600 microseconds—with very high peak power. This enables instantaneous vaporization of tissue with minimal residual heat conduction. The thermal damage zone is confined to just 20–50 µm, allowing layer-by-layer ablation with micron-level precision. This precision ensures that all melanocytic nests are removed down to the dermo-epidermal junction, eliminating recurrence risk, while sparing the deeper reticular dermis and hair follicles, thereby preventing scarring and preserving natural aesthetics.

Moreover, UltraPulse supports real-time depth control: the operator can stop precisely when the wound bed appears uniformly pale pink—indicating complete pigment removal without over-treatment. This level of control is unattainable with CW or SuperPulse modes.

In summary, while Continuous Wave and SuperPulse CO₂ lasers paved the way for laser surgery, UltraPulse technology represents a quantum leap in safety, precision, and cosmetic outcome for benign mole removal. Its ability to combine complete ablation with minimal collateral damage makes it the preferred choice for dermatologic surgeons aiming for scar-free, recurrence-free results—particularly in anatomically delicate regions.

為何超脈衝二氧化碳雷射在良性皮膚痣切除上優於連續波與超級脈衝二氧化碳雷射

良性色素性皮膚痣（黑色素細胞痣）的去除，需在徹底清除黑色素細胞與保護周圍健康組織之間取得精準平衡，以避免疤痕、色素改變或損傷毛囊等重要結構——尤其是在臉部或頸部等美容敏感區域。在多種二氧化碳（CO₂）雷射模式中，超脈衝（UltraPulse）CO₂雷射被公認為黃金標準，其在療效與安全性上顯著優於連續波（Continuous Wave, CW） 與超級脈衝（SuperPulse）CO₂雷射。

連續波 CO₂ 雷射為最早期的技術，其以持續不斷的雷射光束作用於組織。雖可有效氣化病灶，但因熱能持續累積與擴散，造成廣泛的熱損傷區（常超過500微米）。此非選擇性熱損傷不僅破壞痣體，亦會損及周圍膠原蛋白、神經及毛囊，極易導致疤痕、色素脫失及不良美容效果。因此，連續波模式現已不適用於良性皮膚痣的美容性切除。

超級脈衝 CO₂ 雷射雖較連續波有所進步，透過毫秒級（1–10 毫秒）高能量脈衝並搭配短暫冷卻間隔，減少了整體熱累積，將熱損傷區縮小至約50–150微米。然而其脈衝時間仍過長，缺乏微觀層級的精準控制，可能過度氣化至目標深度以下，導致痣細胞清除不全（增加復發風險）或不必要地損傷真皮與附屬器官。

相較之下，超脈衝 CO₂ 雷射以極短脈衝（通常為200–600微秒）搭配極高峰值功率，實現即時組織氣化，熱能幾乎無時間向周圍擴散。其熱損傷區僅限於20–50微米，可實現微米級的層狀精準剝除。此特性確保所有黑色素細胞巢穴均被徹底清除（達表皮與真皮交界層），杜絕復發可能，同時完整保留深層網狀真皮與毛囊結構，有效預防疤痕形成並維持自然外觀。

此外，超脈衝模式支援即時深度控制：操作者可在傷口基底呈現均勻淡粉紅色時即時停止——此視覺指標代表色素已完全清除，且未過度治療。此種精細調控能力，是連續波與超級脈衝模式所無法達成的。

綜上所述，儘管連續波與超級脈衝 CO₂ 雷射為雷射外科奠定基礎，超脈衝技術卻在安全性、精準度與美容效果上實現了質的飛躍。其兼具完全清除與最小附帶損傷的雙重優勢，使其成為皮膚科醫師在處理良性痣、追求無疤且無復發結果（尤其在解剖結構敏感區域）時的首選工具。

題目：超脈衝二氧化碳激光脫墨的治療效果－幾乎看不見疤痕

Topic for discussion: Cosmetic outcome of ultra pulse CO2 mole removal - minimal scarring

激光脫墨後​

激光脫墨前​

主診醫生：鍾經略醫生 – 英國倫敦大學臨床皮膚科碩士

碩士頒發機構：英國倫敦大學英皇學院聖約翰臨床皮膚科研究院

皮膚科醫生常見的皮膚問題 - 激光脫墨（真實案例）