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Choi Implanter Pen: Precision Tool for DHI Hair Transplant

July 10, 2025

choi implanter pen

Overview

The Choi implanter pen is a revolutionary medical instrument specifically designed for performing Direct Hair Implantation (DHI) procedures. Renowned for its exceptional precision, this innovative device has significantly improved the accuracy, effectiveness, and aesthetic outcomes of hair transplant surgeries worldwide. By utilizing the Choi implanter pen, surgeons can directly implant follicular units into the scalp, minimizing trauma and achieving densely packed, natural-looking hairlines.

What Is the Choi Implanter Pen?

The Choi implanter pen, commonly known as the Choi pen, is an advanced handheld surgical tool used primarily for DHI hair transplant procedures. Unlike traditional hair transplantation methods, the Choi pen allows the simultaneous creation of recipient incisions and implantation of hair follicles, streamlining the procedure and enhancing overall efficiency.

This specialized tool consists of a hollow needle connected to a spring-loaded mechanism, designed to precisely control the angle, depth, and placement of each follicular unit. Its ergonomic design allows surgeons greater comfort and accuracy during long transplant sessions, ensuring consistent results for each patient. Thanks to these unique characteristics, the Choi pen technique has become a favored method among experienced hair transplant surgeons seeking superior aesthetic outcomes.

Origin and Evolution of the Choi Pen Technique

The Choi pen was initially developed in South Korea in the late 1980s by Dr. Yung Chul Choi and his team. Originally intended to address inefficiencies and limitations in manual follicle implantation, this groundbreaking device quickly gained popularity due to its capacity to significantly reduce follicle handling, thus improving graft survival rates.

choi implanter pen

Throughout the subsequent decades, continuous innovation has improved the Choi pen’s precision, needle sizes, and ease of use. The advent of smaller, more precise needles allowed surgeons to achieve denser, more natural hairlines while minimizing tissue trauma. As the technology spread globally, Turkish clinics have notably led the way in refining the Choi pen hair transplant method, becoming recognized hubs of excellence in the field of hair restoration.

Key Components and Needle Sizes

The Choi pen consists primarily of three critical components:

  • Hollow Needle: A sharp, precise needle for creating recipient incisions and delivering grafts simultaneously.
  • Plunger Mechanism: A spring-loaded system controlling the placement of hair follicles into incisions, significantly minimizing follicle trauma.
  • Ergonomic Pen Body: Designed to ensure surgeon comfort and accurate handling during lengthy procedures.

Needle sizes vary according to individual patient needs, typically ranging from 0.5 mm to 1.5 mm in diameter. Smaller needles, typically between 0.6 mm and 0.9 mm, are frequently utilized for fine or thin hair, facilitating denser implantation patterns. Larger needles (around 1.0 mm to 1.2 mm) might be selected to implant follicles with multiple hairs or for thicker hair types.

Choosing the appropriate needle size and Choi pen variant depends significantly on each patient’s scalp condition, hair thickness, and desired density. Experienced hair restoration specialists carefully determine the optimal Choi pen parameters during pre-operative assessments to guarantee precise and personalized outcomes.

Why Surgeons Prefer the Choi Pen Technique

The preference among surgeons for the Choi implanter pen stems from numerous benefits over traditional hair transplant techniques. Chief among these advantages is the increased control surgeons gain over the depth and angle of implantation, leading to highly natural results. Additionally, the Choi pen dramatically reduces handling and exposure of follicles, minimizing trauma and boosting graft survival rates compared to conventional transplant methods.

Furthermore, surgeons utilizing the Choi pen technique consistently report shorter operative times, improved precision, and decreased patient discomfort, swelling, and bleeding post-operation. All these factors contribute to a significant reduction in downtime and quicker patient recovery, making the Choi pen hair transplant an increasingly popular and sought-after option worldwide.

How the Choi Pen Works in Direct Hair Implantation (DHI)

The Choi implanter pen revolutionizes hair restoration by fundamentally altering the way hair grafts are transplanted. In Direct Hair Implantation (DHI), the Choi pen merges the incision and implantation steps into a single, seamless action. This unique capability allows surgeons to deliver follicular units directly into recipient areas, reducing graft exposure, handling, and potential damage, leading to significantly improved transplant outcomes.

Loading Follicular Units into the Choi Pen

One of the defining aspects of the Choi pen hair transplant procedure is the meticulous loading of follicular units. After extraction via the micro-motor FUE method, each follicular graft is carefully placed within the hollow needle of the Choi pen. This critical step is typically performed by highly skilled technicians to ensure precision, speed, and safety.

  • Graft Preparation:
    Follicular units, consisting of 1–4 hairs, are delicately harvested from the donor area. Each graft is handled minimally to preserve its viability and integrity.
  • Pen Loading:
    Technicians precisely load the follicular unit into the needle tip of the Choi pen, aligning each hair in the correct orientation. Typically, multiple pens are pre-loaded to maintain efficiency and reduce the overall time grafts remain outside the body.
  • Pen Rotation:
    Several Choi pens, often ranging from 4 to 6 devices, are rotated throughout the procedure. This practice maintains graft freshness, minimizes trauma, and maximizes the transplant efficiency.

Controlled Angle and Depth for Natural Results

The most notable feature of the Choi implanter pen technique is the unparalleled control it grants surgeons over implantation angles and depths. Precise control is essential for creating hairlines that look natural and blend seamlessly with existing hair.

  • Accurate Angulation:
    By precisely adjusting the Choi pen, the surgeon can place follicular units at angles ranging from 30 to 45 degrees, mimicking natural hair growth patterns and ensuring aesthetically pleasing outcomes. The ability to adjust implantation angles makes the Choi pen especially suitable for hairline refinement and temples.
  • Depth Control:
    The adjustable needle depth of the Choi pen facilitates implantation at exact depths corresponding to follicle size and scalp thickness. Depth control is crucial for optimal follicle survival, ensuring grafts are neither placed too superficially nor too deeply, both of which could negatively affect growth outcomes.
  • Customized Placement:
    Surgeons use their expertise to customize the depth and angle for each recipient site, achieving varied densities across different scalp areas, essential for natural-looking density and coverage.

Minimizing Graft Handling and Trauma

The Choi pen’s revolutionary technique significantly reduces graft trauma by limiting handling and exposure. In traditional implantation methods, follicular units often endure multiple handling steps, increasing the risk of mechanical injury and dehydration. In contrast, the Choi pen eliminates many of these risks through its streamlined process.

  • Reduced Handling Time:
    By directly implanting follicles into the recipient sites with a single, fluid motion, the Choi pen drastically cuts down the time grafts spend outside the body, thereby preserving follicular viability and enhancing post-operative growth rates.
  • Less Mechanical Trauma:
    The gentle, controlled insertion mechanism of the Choi pen considerably reduces mechanical stress on the delicate hair follicles. This reduction in trauma greatly improves overall graft survival rates.
  • Enhanced Sterility:
    Since the graft remains within the Choi pen until implantation, exposure to potential contaminants or drying is minimized, further safeguarding graft quality.

Overall, the innovative working principle of the Choi pen not only refines the hair transplant process but substantially enhances patient outcomes. The combination of precise angulation, depth control, minimal handling, and reduced follicular trauma translates directly into better graft survival, accelerated healing, and highly natural, aesthetically pleasing results.

Step-by-Step Choi Pen Hair Transplant Procedure

The Choi pen hair transplant method is meticulously structured to maximize graft survival and deliver outstanding aesthetic outcomes. Understanding the detailed phases involved in the procedure ensures clarity for prospective patients and helps set realistic expectations. Here’s a comprehensive breakdown of the Choi pen technique, covering everything from pre-operative evaluation to the implantation itself.

Pre-Operative Assessment and Donor Mapping

The foundation of every successful hair transplant begins well before the actual surgery. The pre-operative assessment phase involves careful analysis, planning, and patient counseling.

  • Patient Consultation:
    Initially, patients undergo an in-depth consultation where hair loss patterns, medical history, lifestyle factors, and expectations are discussed. The surgeon explains the Choi pen technique and assesses whether the patient is an ideal candidate for this particular transplant method.
  • Donor Area Mapping:
    Accurate identification and evaluation of the donor area are crucial. Surgeons determine the donor area’s density, hair thickness, and follicular quality, creating a precise harvesting strategy to ensure minimal donor-area depletion and maximal aesthetic outcomes.
  • Hairline Design:
    A customized hairline is carefully designed, taking into consideration the patient’s facial symmetry, age, and future hair loss patterns. This personalized approach ensures natural-looking results that complement individual features.

Extraction Phase Using Micro-Motor FUE

The extraction phase involves precisely harvesting healthy follicular units from the donor region, typically at the back and sides of the scalp, using micro-motor FUE technology.

  • Local Anesthesia Administration:
    To ensure patient comfort, local anesthesia is carefully administered to numb the donor and recipient areas. This minimizes discomfort throughout the procedure.
  • Follicle Extraction:
    Follicular units are harvested individually using advanced micro-motor punches ranging from 0.6 mm to 0.9 mm in diameter. The tiny, cylindrical punch instruments efficiently isolate follicular units without causing significant trauma or leaving noticeable scars, ensuring rapid healing post-procedure.
  • Follicle Preservation:
    Extracted follicles are gently collected and preserved in nutrient-rich solutions, maintaining optimal temperature and hydration to ensure high graft survival rates.

Implantation with Multiple Choi Pens

Following extraction, the implantation stage begins immediately. The hallmark of the Choi pen hair transplant is the simultaneous incision and implantation process, significantly streamlining the procedure.

  • Loading Choi Pens:
    Hair restoration technicians carefully load individual follicular units into multiple Choi pens, maintaining the correct orientation and integrity of each graft.
  • Direct Implantation:
    Surgeons implant the follicles directly into recipient areas using the loaded Choi pens, skillfully controlling implantation angles and depths. The implantation process is typically executed by using multiple pens in rotation, allowing for continuous workflow, minimizing graft exposure, and preserving follicle viability.
  • Sequential Placement:
    Implantation typically starts at the hairline, moving progressively toward the crown. Precise control ensures consistent density and an aesthetically pleasing gradient, providing the most natural-looking outcomes.
  • Immediate Inspection:
    The surgical team continually assesses each implantation phase, ensuring follicular units are evenly distributed and correctly oriented. This continuous monitoring enables instant correction or adjustment if required, guaranteeing optimal results.

Procedure Duration and Patient Comfort

The Choi pen hair transplant procedure usually takes between 4–8 hours, depending on the number of grafts required and individual patient specifics. The use of multiple Choi pens significantly reduces operative time, enhancing both graft quality and patient comfort.

  • Minimal Discomfort:
    Patients typically experience minimal discomfort due to the refined nature of the Choi pen and localized anesthesia. Most patients remain relaxed, often resting comfortably or watching television during the procedure.
  • Short Breaks:
    Procedures are designed with short intervals allowing patients comfort breaks if required, further ensuring overall patient well-being throughout the session.

The structured and streamlined nature of the Choi pen hair transplant ensures exceptional patient experiences and superior outcomes, combining meticulous pre-operative planning, precise follicle extraction, and direct implantation. This comprehensive process establishes the Choi pen method as a highly effective solution for individuals seeking advanced, minimally invasive hair restoration.

Advantages of the Choi Pen Technique for Hair Restoration

The Choi implanter pen has quickly risen to prominence within hair restoration clinics globally, particularly in renowned medical tourism hubs such as Turkey. This advanced hair transplant method provides distinct advantages compared to traditional implantation techniques, significantly enhancing the patient experience, aesthetic outcomes, and overall treatment success.

Higher Graft Survival Rates

One of the most significant benefits of using the Choi pen in Direct Hair Implantation (DHI) procedures is the notably improved graft survival rate. This higher success rate results from several key factors inherent to the Choi pen method:

  • Reduced Graft Handling:
    The Choi pen dramatically decreases the need to manipulate follicles multiple times. Direct implantation ensures follicles remain protected and hydrated, thereby increasing their likelihood of survival post-transplant.
  • Shorter Exposure Times:
    Follicular units are implanted swiftly following extraction, drastically reducing the duration grafts remain outside the body. Short exposure times prevent graft dehydration and environmental damage, maximizing viability.
  • Minimal Mechanical Trauma:
    The gentle spring-loaded insertion mechanism of the Choi pen minimizes damage to follicles during implantation, preserving their integrity and significantly enhancing survival rates.

Collectively, these factors can lead to graft survival rates exceeding 95%, markedly higher than traditional methods, making the Choi pen technique the preferred option for quality-conscious patients and surgeons alike.

Reduced Bleeding and Faster Healing

Another compelling advantage of the Choi pen technique is the minimal invasiveness of the procedure, directly contributing to reduced intraoperative bleeding and accelerated recovery periods:

  • Minimal Incision Size:
    The Choi pen uses ultra-fine needles (typically between 0.6 mm to 1.2 mm in diameter) to simultaneously create recipient incisions and implant grafts. These extremely small punctures limit bleeding, trauma, and subsequent scarring.
  • Decreased Swelling and Inflammation:
    Due to smaller incisions and less tissue manipulation, patients experience significantly reduced swelling, inflammation, and postoperative discomfort, enhancing the comfort of their recovery.
  • Accelerated Recovery Timeline:
    Patients undergoing Choi pen hair transplantation typically return to their routine daily activities within a few days. The rapid healing process minimizes downtime, making the procedure highly attractive for busy professionals or international patients seeking efficient treatment during their short visits.

Ideal for Dense Packing and Natural Hairlines

The Choi pen technique is exceptionally suited to achieving dense packing of follicular units and crafting hairlines with unmatched naturalness:

  • Precision Dense Packing:
    The ability to create precise incisions at exact angles and depths allows surgeons to densely pack follicles closely together without damaging surrounding tissue. Consequently, Choi pen hair transplants offer higher density results compared to traditional techniques.
  • Natural Hairline Recreation:
    With precise angle control, surgeons can expertly design hairlines that perfectly mimic natural hair growth directions and patterns. This precision ensures subtle, aesthetically pleasing transitions from transplanted to native hair.
  • Customizable Hair Density:
    The Choi pen facilitates variable graft placement density depending on individual patient needs, particularly beneficial for achieving maximum coverage and visual density in areas prone to visible thinning, such as the frontal scalp and crown.

Overall, the Choi pen hair transplant method provides unmatched advantages, transforming patient outcomes by delivering superior graft survival rates, minimally invasive procedures, reduced recovery time, and exceptional aesthetic results. Patients choosing this technique experience significantly enhanced satisfaction and long-term hair restoration success.

Choi Pen vs Sapphire: Tool Design and Surgical Outcomes

Both the Choi pen and Sapphire FUE techniques are highly regarded in the hair transplantation field, each with unique strengths and ideal patient profiles. Understanding the key distinctions between these two methods helps patients select the approach best suited to their individual hair restoration goals.

Incision Method Comparison

The core difference between the Choi implanter pen and Sapphire FUE lies in their incision methodologies:

  • Choi Implanter Pen:
    With the Choi pen, incisions and follicular implantation occur simultaneously. The device uses a hollow needle, allowing direct graft insertion into the scalp without separate incisions, greatly minimizing handling time and follicle exposure.
  • Sapphire FUE:
    Sapphire FUE uses blades made from sapphire crystals to create precise micro-incisions separately, after which follicles are manually inserted. Although incision-making and implantation are separate processes, Sapphire blades provide unmatched sharpness and precision in creating clean, uniform incisions, reducing scarring and accelerating healing.

Scarring, Downtime, and Recovery

Recovery and scarring differ subtly yet significantly between the two methods:

  • Choi Implanter Pen:
    Due to its minimally invasive, single-step incision and implantation approach, patients experience reduced trauma, bleeding, and swelling. Healing time is relatively faster, with visible recovery within the first week. Minimal scarring ensures discreet and aesthetically pleasing results.
  • Sapphire FUE:
    Sapphire blades, although extremely precise, require separate graft insertion following incisions. Slightly increased handling may result in marginally higher postoperative swelling or redness compared to Choi. However, Sapphire incisions still heal exceptionally well due to the clean-cut edges, typically leaving minimal visible scarring.

Ideal Candidate Profiles

Candidate suitability for each method varies depending on individual patient characteristics and specific transplantation goals:

  • Choi Implanter Pen Candidates:
    • Patients prioritizing minimal downtime and fast recovery
    • Those desiring dense, precisely packed hairlines or temples
    • Individuals concerned about minimal graft exposure and follicle handling
  • Sapphire FUE Candidates:
    • Individuals requiring extensive grafting sessions involving larger areas
    • Patients who prefer or need separate incision phases for strategic follicle distribution
    • Those with broader hair restoration requirements, especially over extensive bald areas

DHI vs Sapphire FUE: Comprehensive Comparison

Direct Hair Implantation (DHI) with the Choi pen and Sapphire FUE are both advanced FUE-based methods, each providing distinct advantages and procedural differences. A comparative analysis clarifies patient expectations, surgical experiences, and overall outcomes.

Technical Workflow Differences

  • Choi Pen DHI:
    The DHI method integrates graft insertion and recipient incision into one step, minimizing graft handling and enhancing follicle viability. Multiple pre-loaded Choi pens facilitate a continuous and efficient implantation workflow.
  • Sapphire FUE:
    Sapphire FUE divides the procedure into two distinct phases: first creating precise incisions using sapphire blades, then manually implanting follicles afterward. While slightly extending procedure duration, it offers exceptional incision accuracy and customizable implantation.

Aesthetic Outcomes and Patient Satisfaction

Both methods yield outstanding aesthetic results; however, subtle differences may influence patient preference:

  • Choi Pen DHI:
    Exceptionally natural-looking results due to precision in angle and depth control, ideal for creating refined, dense hairlines, and targeted high-density areas. Patients consistently report very high satisfaction levels due to rapid recovery and minimal downtime.
  • Sapphire FUE:
    Provides consistently uniform incision depths and clean edges, promoting evenly distributed growth. While slightly more invasive than Choi DHI, aesthetic outcomes remain remarkably high-quality, particularly suitable for broader coverage areas.

Cost Considerations and Package Options

Financial considerations often influence patient choice between these methods:

  • Choi Pen DHI Costs:
    Typically higher per graft due to advanced equipment requirements, specialized technician expertise, and precise graft handling techniques. However, patients frequently find the higher costs justified by faster recovery, reduced downtime, and superior graft survival rates.
  • Sapphire FUE Costs:
    Generally more affordable, particularly suitable for larger transplant areas, making it an appealing choice for patients requiring extensive grafting. Competitive pricing and widespread availability in leading hair transplant clinics also contribute to its popularity.

Candidate Eligibility for a DHI Hair Transplant with the Choi Pen

Evaluating candidate eligibility is crucial to ensuring successful outcomes using the Choi pen method.

Hair-Loss Stages and Patterns

Ideal candidates for DHI with Choi pens typically fall within:

  • Early to Moderate Hair Loss:
    Stages 2–5 on the Norwood scale are most suitable, benefiting from dense packing capabilities and refined hairline design.
  • Stable Hair Loss Patterns:
    Patients with stable or predictable hair loss patterns are excellent candidates, allowing surgeons to plan strategically for future loss and ensure long-lasting results.

Scalp Elasticity and Donor Density

Scalp quality and donor characteristics significantly impact candidate suitability:

  • Good Scalp Elasticity:
    Ensures minimal tension during implantation, supporting faster healing and improved follicular growth post-procedure.
  • Adequate Donor Density:
    Patients must possess sufficient donor follicles, ensuring effective graft extraction without compromising the donor area’s natural appearance.

Contraindications and Risk Factors

Candidates must be carefully screened for contraindications, including:

  • Active scalp conditions or infections
  • Blood-clotting disorders or specific autoimmune diseases
  • Unrealistic patient expectations or unstable psychological states

Post-Operative Care After Choi Pen Hair Transplant

Proper postoperative care ensures optimal Choi pen transplant outcomes.

First 72 Hours: Protection and Washing

Patients should:

  • Avoid touching or scratching transplanted areas
  • Protect scalp from physical trauma
  • Follow surgeon instructions for gentle washing techniques

Week 1–4: Shedding and Redness

Typical postoperative experiences include:

  • Mild shedding of implanted hair (temporary and normal)
  • Gradual resolution of redness and minor swelling
  • Regular follow-up to monitor healing progress

Months 3–12: Growth Milestones

Long-term recovery milestones:

  • 3–6 Months: Noticeable new hair growth begins, gradually thickening
  • 6–12 Months: Progressive density improvement, reaching final aesthetic results within a year

Choosing the Right Clinic in Turkey for Choi Pen Hair Transplant

Clinic selection significantly influences transplant quality and patient satisfaction.

Surgeon Experience and Certification

Seek highly experienced surgeons certified by reputable hair restoration organizations, demonstrating substantial DHI expertise with Choi pen usage.

Technology and Facility Standards

Top-tier clinics offer:

  • Modern facilities meeting international standards
  • Advanced technology ensuring precision and safety
  • Transparent consultations outlining realistic expectations and results

FAQs

Is the Choi Pen Safe and FDA-Approved?

Yes, the Choi pen is recognized as a safe medical device widely used internationally and meets regulatory standards in reputable clinics.

How Many Choi Pens Are Used per Session?

Surgeons commonly utilize 4–6 pens per session, ensuring efficiency, graft quality, and continuous workflow.

Can the Choi Pen Be Used for Beard or Eyebrow Transplants?

Absolutely—the Choi pen’s precision and accuracy make it highly effective for facial hair and eyebrow transplantation, producing refined and natural outcomes.

Article by Dr. Akif

Dr. Akif is a leading specialist in hair transplantation, recognized for excellence, innovation, and outstanding patient care. With years of dedicated experience and thousands of successful procedures, Dr. Akif has earned a trusted reputation in the field of hair restoration.

@dr.akiff