Needles Market Analysis & Forecast: 2025-2032

Needles Market Analysis & Forecast: 2025-2032

Needles Market is estimated to be valued at USD 11,117.2 Mn in 2025 and is expected to reach USD 18,564.4 Mn in 2032, exhibiting a compound annual growth rate (CAGR) of 7.6% from 2025 to 2032.

Key Takeaways

• Based on Needles Type, the Safety Needles segment is projected to account for the largest share of the market in 2025, due to rising demand for injury prevention and regulatory compliance.
• Based on Delivery Site, the Intravenous Needles segment is expected to dominate with the highest share of the market in 2025, due to their essential role in drug administration and emergency care.
• Based on Application, the Pen Needles in Diabetes segment is expected to lead the market with the greatest share in 2025, driven by the global surge in insulin-dependent patients.
• Based on Material, the Stainless Steel Needles segment is expected to account for the biggest share of the market in 2025, preferred choice for their strength, durability, and biocompatibility.
• Based on End User, the Hospital segment is expected to contribute 45% share of the market in 2025, fueled by high procedure volumes and strict safety standards.
• Based on Region, North America is set to lead the global needles market in 2025 with a 38.5% share. While, Asia Pacific region is anticipated to be the fastest growing.

Market Overview

Needles have been in use for thousands of years and remain one of the most important medical devices globally. There are different types of needles primarily classified based on their shape, size and intended medical use. Hypodermic needles are by far the most widely used and come with either a fixed shaft or a detachable needle from the syringe. These are used for delivery of medications like vaccines or injections, as well as blood sample collection. Suture needles are attached to surgical thread or wire and are used for stitching and closing wounds. Other specialty needles include biopsy, spinal, epidural and cannula needles that are designed for specific medical procedures They provide an easy and minimally invasive way of delivering drugs, extracting fluids or stitching tissue. Standard hypodermic needles are sterile, inexpensive, and mass produced. Precision specialty needles help physicians perform complex surgical and diagnostic procedures easily. However, needle-stick injuries pose a risk of transferring blood-borne infections like Human Immunodeficiency Virus (HIV), hepatitis, if used improperly. Disposal of used needles especially in developing world remains an environmental and health challenge. Alternative needle-free technologies are being researched but traditional metal needles still remain the standard of care for majority of global healthcare needs.

Current Events and their Impact on the Needles Market

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Technological Innovations in the Needles Market

Micro Needles

• Function: Micro needles are tiny, minimally invasive projections that penetrate only the outer layer of the skin.
• Applications: Used for transdermal drug delivery and vaccines, especially for conditions like diabetes, influenza, and even cosmetic treatments.
• Benefits:
• Virtually painless
• Reduces fear and anxiety associated with traditional needles
• Enables self-administration
• Improves patient compliance
• Future Potential: Promising for mass immunization and wearable drug delivery patches.

Ultra-Fine Needles

• Function: These needles have a smaller gauge and sharper tips to minimize pain and tissue damage.
• Applications: Commonly used in insulin pens, hormone therapies, and pediatric care.
• Benefits:
• Less painful insertion
• Reduced bruising and skin trauma
• Ideal for frequent injections
• Market Impact: Increasing demand among diabetic and geriatric patients is driving adoption.

Prefilled Syringes & Autoinjectors

• Prefilled Syringes
• Function: Syringes preloaded with medication for single-use.
• Benefits:
• Reduces dosing errors
• Minimizes contamination risk
• Saves time in clinical settings
• Cuts down on medication waste
• Autoinjectors
• Function: Devices that automatically deliver a set dose of medication, often used for emergency treatments (e.g., epinephrine) and chronic conditions.
• Benefits:
• Enables self-administration
• Improves safety with retractable needle mechanisms
• Enhances portability and ease of use

Segmental Insights 

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Needles Market Insights, By End User: Hospitals Are the Largest Consumers, Fueled by High Procedure Volumes and Strict Safety Standards

In terms of end user, the hospitals segment is projected to account for 45% share in 2025. This dominance is driven by the sheer scale of procedures performed in hospital settings, ranging from surgeries and emergency care to routine diagnostics and inpatient treatments. Hospitals also tend to adopt the latest safety technologies and adhere to strict infection control protocols, further boosting the demand for advanced needle types like safety and intravenous needles.

For instance, in October 2025, Owen Mumford launched the EcoSafe® Safety Syringe Platform, designed to enhance hospital safety while reducing environmental impact. Featuring integrated stainless steel needles and cost-effective design, the syringes aim to prevent needlestick injuries and support sustainable healthcare practices. The platform offers a smart solution for budget-conscious hospitals committed to greener operations.

Needles Market Insights, By Needle Type: Safety Needles Lead Due To Rising Demand for Injury Prevention and Regulatory Compliance

In terms of needle type, the safety needles segment is expected to hold the largest share of the market in 2025, driven by growing awareness of needlestick injuries and the associated risks of bloodborne infections such as HIV and hepatitis. Healthcare institutions are increasingly adopting safety-engineered devices to comply with stringent regulatory mandates and to enhance workplace safety for healthcare professionals. These needles are designed with features like retractable mechanisms or protective sheaths that minimize accidental exposure, making them the preferred choice in hospitals and clinics worldwide.

For instance, in March 2024, Hindustan Syringes & Medical Devices (HMD) launched 'Dispojekt', a single-use syringe equipped with a safety needle to combat needlestick injuries (NSIs). The innovation aims to enhance healthcare worker safety and aligns with global efforts to reduce occupational hazards in clinical settings. Dispojekt is expected to support safer injection practices across India’s healthcare system.

Needles Market Insights, By Delivery Sites: Intravenous Needles Dominate Due To Their Essential Role in Drug Administration and Emergency Care

In terms of delivery sites, the intravenous needles segment is expected to capture the highest share of the market in 2025, due to their critical role in administering medications, fluids, and nutrients directly into the bloodstream. Their widespread use in emergency care, surgeries, chemotherapy, and chronic disease management, especially in oncology and nephrology has solidified their dominance. The increasing prevalence of lifestyle-related diseases and the growing number of hospital admissions further fuel the demand for IV needles.

For instance, in December 2024, Endo launched Adrenalin Ready-to-Use, the first and only FDA-approved manufacturer-prepared epinephrine premixed IV bag. Designed for emergency and critical care, this innovation streamlines intravenous administration by eliminating manual preparation, enhancing speed and safety in life-saving situations. The product marks a significant advancement in injectable drug delivery for hospitals and healthcare providers.

Needles Market Insights, By Application: Pen Needles in Diabetes Top the Market, Driven by the Global Surge in Insulin-Dependent Patients

In terms of application, the pen needles in diabetes segment is expected to hold the greatest share of the market in 2025. This is largely attributed to the global surge in diabetes cases and the growing preference for insulin pens over traditional syringes. Pen needles offer convenience, precision, and reduced pain, making them ideal for self-administration. Technological advancements, such as ultra-thin and short needles, have further improved patient compliance and comfort, reinforcing their market leadership.

For instance, in August 2025, Trividia Health launched TRUEplus® insulin pen needles in the UK, expanding access to high-quality diabetes care products. Designed for comfort and precision, the needles support effective self-administration of insulin for people with diabetes. The launch reflects growing demand for reliable, user-friendly pen needle options in the UK’s diabetes management market.

Needles Market Insights, By Material: Stainless Steel Needles Remain the Preferred Choice for Their Strength, Durability, And Biocompatibility

In terms of material, the stainless steel needles segment is projected to account for the biggest share of the market in 2025, due to its superior strength, corrosion resistance, and biocompatibility. These needles are widely used across various medical procedures, including injections, blood draws, and surgical interventions. Their durability and ability to maintain sharpness over multiple uses make them indispensable in both clinical and laboratory settings. Despite the emergence of alternative materials like plastic and PEEK, stainless steel continues to dominate due to its proven reliability and performance.

For instance, in July 2025, Corza Medical expanded its Onatec® Ophthalmic Suture portfolio, introducing finer needle sizes crafted from high-quality stainless steel. Designed for precision in delicate eye surgeries, the new sutures enhance control and durability. This launch underscores Corza’s commitment to advancing microsurgical innovation with materials trusted for strength and biocompatibility.

Regional Insights

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North America Needles Market Analysis & Trends

North America region is projected to lead the market with 38.5% share in 2025, due to rising demand for vaccines, a growing elderly population, and expanding hospital infrastructure. Increased chronic disease prevalence, widespread use of injectable therapies, and emphasis on safety devices like pen and safety needles also drive demand. Technological advancements and government healthcare initiatives further support market expansion.

For instance, in January 2025, BD announced expanded U.S. manufacturing of critical medical devices, including syringes, needles, and vascular access products. The initiative aims to strengthen domestic supply chains, enhance emergency preparedness, and support healthcare providers with reliable access to essential injection and infusion tools. This move reinforces BD’s commitment to advancing medical device availability and resilience.

Asia Pacific Needles Market Analysis & Trends

Asia Pacific region is expected to exhibit the fastest growth in the market in 2025, due to rising chronic diseases, increasing vaccination programs, and growing healthcare infrastructure. High population density, government immunization initiatives, and greater access to medical care in countries like China and India are key drivers. Additionally, demand for insulin delivery and safety needles supports sustained market growth.

For instance, in January 2205, Terumo launched the Injection Filter Needle under its INFINO™ Development Program, designed for hypodermic and intravitreal injections. Featuring a 5-micrometer mesh filter, the needle helps prevent particulate contamination during drug delivery. This innovation supports safer, more precise administration of sensitive medications, particularly in ophthalmic and specialty care settings.

Needles Market Outlook Country-Wise

The U.S. Needles Market Trends

The U.S. needles market is driven by rising chronic diseases, increased vaccination efforts, and advanced healthcare infrastructure. High demand for injectable therapies, including insulin and biologics, along with safety regulations promoting needlestick prevention, fuels growth. Hospitals and diagnostic centers also contribute significantly due to frequent use of hypodermic, intravenous, and specialty needles.

For instance, in October 2025, Biocon Biologics and Civica expanded their partnership to launch a private-label insulin glargine in the U.S., aiming to improve access and affordability for diabetes patients. The initiative supports Civica’s mission to provide essential medications at transparent prices, addressing growing demand for reliable insulin options across American healthcare systems.

China Needles Market Trends

China's needles market is growing due to rising chronic diseases, expanding vaccination programs, and increased surgical procedures. A large aging population, government healthcare reforms, and demand for safety and specialty needles also drive growth. The surge in Traditional Chinese Medicine and homecare treatments further boosts needle consumption across hospitals and clinics.

For instance, in October 2025, HUA TUO, China’s leading acupuncture needle brand, launched in the U.S. through TCMzone in Arizona. The move brings FDA-cleared needles to American practitioners, enhancing access to high-quality Traditional Chinese Medicine tools. This strategic entry supports growing demand for safe, effective acupuncture solutions across U.S. integrative health markets.

Market Report Scope 

Global Needles Market Drivers

• Rising geriatric population: The rising geriatric population is a key driver of the growing needles market size. Aging individuals face chronic conditions like diabetes, cardiovascular disease, and arthritis, requiring frequent injections, blood tests, and IV therapies. Routine vaccinations for influenza and pneumococcal diseases further boost demand. With compromised immunity and increased reliance on medical care, elderly patients need safer, less invasive needle technologies. Innovations such as finer gauges and safety features enhance compliance and comfort. This demographic shift presents a major opportunity for manufacturers to tailor needle solutions for senior care, fueling market expansion and aligning with global healthcare needs.
• Increasing prevalence of chronic diseases: The rising prevalence of chronic diseases like diabetes, cancer, and cardiovascular conditions is fueling global needles market demand. These ailments require frequent injections, blood tests, and drug delivery using syringes, insulin pens, and lancets. With diabetes cases projected to reach 643 million by 2030, demand is surging. Aging populations, increased surgeries, and vaccination programs further boost needle usage. While regulatory hurdles and interest in needle-free systems pose challenges, innovations like hollow micro needles offer less invasive solutions. Manufacturers must adapt to evolving needs and technologies to sustain growth in the expanding global needle market.
• Advancements in needle technology: Advancements in needle technology are driving global needles market growth by enhancing patient comfort, safety, and treatment adherence. Innovations like safety needles reduce needle stick injuries, while ultra-fine and coated needles minimize pain and tissue trauma. Micro needle technology enables painless transdermal drug and vaccine delivery, supporting self-administration. These developments are especially beneficial for chronic disease management, where frequent injections are common. By improving injection experiences and reducing discomfort, advanced needle designs encourage better compliance and expand medical applications. As healthcare demands rise, evolving needle technologies are expected to fuel robust market expansion across diverse clinical settings.
• Increasing demand for minimally invasive surgeries: The rising demand for minimally invasive surgeries (MIS) is significantly boosting needles market value. MIS procedures, favored for reduced trauma, faster recovery, and minimal scarring, rely heavily on precision needles for suturing, anesthesia, and equipment insertion. Specialized surgical needles with atraumatic tips and advanced coatings are essential for these delicate operations. The growth of robotic-assisted surgeries further drives innovation in needle design for better control and safety. As MIS gains popularity among patients and healthcare providers, manufacturers are developing high-performance needles to meet evolving needs. Increased healthcare spending on MIS continues to expand the surgical instruments market, including needles.

Global Needles Market Opportunities

• Emerging economies with large patient pools: Emerging economies with large patient pools present vast opportunities for growth in the needle market. These countries, which include rapidly developing nations such as China, India, Brazil, and others in regions like Southeast Asia and Africa, have significant populations that are increasingly gaining access to healthcare services. Emerging economies are experiencing growth in healthcare infrastructure, with an increase in the number of hospitals, clinics, and healthcare professionals. As these economies grow, there is a corresponding increase in healthcare expenditure both by governments and private consumers, thereby allowing for greater access to medical services and products. Many of these regions have large and young populations that will require healthcare over the long term. Moreover, these countries are beginning to experience the epidemiologic transition towards more chronic diseases, which are prevalent in developed countries.
• Advancements in drug delivery devices: Advancements in drug delivery devices are fueling the needles market forecast, driven by patient-centric innovations like auto-injectors, pen injectors, and safety syringes. These devices enhance ease, safety, and comfort, especially for chronic conditions requiring frequent injections. Demand for biologics and biosimilars further boosts the need for specialized needles that handle high-viscosity formulations. Prefilled syringes reduce waste and improve convenience, while thin, short needles support less invasive procedures. Manufacturers must align with pharmaceutical trends and ensure compatibility with evolving technologies. As drug delivery evolves, needle makers are poised for sustained growth in a competitive healthcare landscape.
• Increasing demand for biosimilars and biologics: The rising demand for biosimilars and biologics is driving global needles market research and growth. These injectable therapies treat chronic conditions like diabetes, cancer, and autoimmune disorders, requiring specialized needles for safe, effective delivery. Devices such as autoinjectors, pen needles, and prefilled syringes enhance patient comfort and adherence. As biosimilars expand access to affordable treatments, needle manufacturers must innovate with safety features and user-friendly designs. The aging population and increasing chronic disease burden further boost demand. This evolving pharmaceutical landscape presents major opportunities for advanced needle technologies, making research and development essential for market competitiveness.

Global Needles Market Trends

• Adoption of safety needles: The adoption of safety needles is boosting needles market price due to rising demand for safer medical devices. Designed to prevent needle stick injuries and exposure to blood-borne pathogens, safety needles feature retractable tips, protective shields, and self-blunting mechanisms. Regulatory mandates like the U.S. Needlestick Safety Act and global healthcare standards are driving widespread adoption. Manufacturers are expanding product lines to meet diverse clinical needs, while advocacy and education increase awareness among healthcare workers. As safety becomes a top priority, the market for user-friendly, innovative safety needles is expected to grow, elevating both demand and pricing across healthcare sectors.
• Transition towards single-use needles: Transition towards single-use needles is a notable trend within the healthcare sector and is expected to be a key driver for the needles market. Single-use, or disposable needles, are designed to be used once and then discarded, thereby significantly minimizing the risk of cross-contamination and the transfer of infectious diseases, which is a major concern with reusable needles. Single-use needles offer a higher standard of infection control, which is critical in healthcare settings to prevent the spread of diseases like HIV, hepatitis B, and hepatitis. Enhanced healthcare regulations and policies globally have mandated the use of single-use needles in various medical procedures to improve patient safety. Despite the need for repeated purchases, single-use needles can be cost-effective when considering the long-term costs that are associated with the sterilization of reusable needles and the treatment of needle stick injuries or infections.

Recent Developments

• In October 2025, SCHOTT Pharma launched its first 5.5 ml prefillable staked-needle glass syringe, expanding the syriQ BioPure® platform. Designed for subcutaneous delivery of biologics in homecare settings, the syringe supports treatments in immunology, oncology, and CNS disorders. Made with high-quality materials, it aligns with the industry shift from intravenous to subcutaneous administration.
• In October 2025, Olympus launched SecureFlex, a single-use fine needle biopsy device for endoscopic ultrasound-guided procedures. Designed to collect tissue from submucosal and extramural lesions, it enhances diagnostic precision for conditions like pancreatic cancer. The device offers improved flexibility and control, supporting safer access to challenging anatomical areas in gastrointestinal and respiratory care.

Analyst Opinion (Expert Opinion)

The Needles market is evolving from a price-driven commodity space to a safety- and compliance-led industrial segment. Procurement decisions are increasingly influenced by demonstrable reductions in sharps injuries, regulatory compliance, and integrated waste-management solutions rather than unit cost alone. High-volume institutional demand is driven by routine immunizations and long-term therapies, such as insulin and biologics, creating recurring, higher-margin opportunities. In 2024, approximately 14.3 million children remained unvaccinated, highlighting geographically concentrated unmet demand for needles and related devices.

Worker-safety remains the single most persuasive procurement lever. Millions of healthcare workers suffer sharps injuries annually, with an estimated 66,000 HBV, 16,000 HCV, and 1,000 HIV infections linked to these incidents. Consequently, hospitals increasingly adopt validated safety-engineered devices, despite modest unit premiums. Regulatory frameworks, including OSHA guidelines and EU Directive 2010/32/EU, mandate evaluation and implementation of safety devices, favoring vendors offering comprehensive solutions encompassing devices, training, and sharps-logging systems.

Strategically, manufacturers controlling polymer conversion and assembly can ensure performance and traceability, while regional manufacturing in Asia-Pacific supports emerging-market growth and supply security. Future success requires evidence-based positioning, bundled safety services, and selective exploration of needle-free delivery technologies. Value-driven, compliance-oriented suppliers are positioned to capture higher margins and deepen institutional relationships, shifting procurement from lowest-cost to outcome-focused contracting.

Market Segmentation

• By Needles Type
  • Conventional Needless
  • Safety Needless
• By Delivery Site
  • Intradermal
  • Subcutaneous
  • Intravenous
  • Intramuscular
  • Intraperitoneal
• By Application
  • Surgical Suture Needless
  • Pen Needless in Diabetes
  • Blood Collection Needless
  • Ophthalmic Procedure Needless
  • Dentistry Needless
  • Insufflation Needless
  • Other Needless
• By Material
  • Stainless Steel Needless
  • Plastic Needless
  • Glass Needless
  • PEEK Needless
• By End User
  • Hospitals
  • Clinics
  • Diagnostic Centers
  • Research Institutions
  • Home-based care
  • Others
• By Region
  • North America
    • U.S.
    • Canada
  • Latin America
    • Brazil
    • Argentina
    • Mexico
    • Rest of Latin America
  • Europe
    • Germany
    • U.K.
    • Spain
    • France
    • Italy
    • Russia
    • Rest of Europe
  • Asia Pacific
    • China
    • India
    • Japan
    • Australia
    • South Korea
    • ASEAN
    • Rest of Asia Pacific
  • Middle East
    • GCC Countries
    • Israel
    • Rest of Middle East
  • Africa
    • South Africa
    • North Africa
    • Central Africa
• Global Needles Market Companies
• • Abbott
  • Becton, Dickinson and Company
  • Terumo Corporation
  • Johnson & Johnson Services Inc.
  • Braun SE
  • Biotronik SE & Co. KG
  • Boston Scientific Corporation
  • Nipro Medical Corporation
  • Medtronic
  • Novo Nordisk A/s
  • Cardinal Health
  • Teleflex Incorporated
  • Thermo Fisher Scientific Inc.
  • Merck KGaA
  • DTR Medical Ltd
  • Stryker

Sources

Primary Research Interviews from the following stakeholders

Stakeholders

• Interviews with syringe and needle manufacturers, medical device distributors, hospital procurement heads, infection control specialists, surgical equipment suppliers, and healthcare administrators across key global markets.

Specific stakeholders

• Procurement and biomedical engineering heads at multi-specialty hospitals and healthcare groups (e.g., Apollo Hospitals, Cleveland Clinic, Mayo Clinic)
• Category managers at pharmaceutical companies involved in injectable drug delivery (e.g., Pfizer, Sanofi, Sun Pharma)
• Supply chain and purchasing managers at public health agencies and vaccination program units (e.g., UNICEF Supply Division, NHS Supply Chain, CDC Vaccine Program)
• Clinical practitioners and nursing heads in surgical, diabetes care, and immunization departments
• Medical device distributors and logistics partners across North America, Europe, and Asia-Pacific
• Product development leads at OEMs for hypodermic, biopsy, suture, and safety needles
• Regulatory and quality assurance professionals specializing in ISO, FDA, and CE compliance for single-use medical devices

Databases

• World Health Organization (WHO) Health Product Data and Global Health Observatory
• UN Comtrade Database
• World Trade Organization (WTO) Trade Statistics
• U.S. Food and Drug Administration (FDA) 510(k) and PMA Database
• European Medicines Agency (EMA) – Medical Device Reports
• China National Medical Products Administration (NMPA) Data Center
• Japan Ministry of Health, Labour and Welfare (MHLW) Device Registry
• Indian Directorate General of Commercial Intelligence and Statistics (DGCIS)
• Eurostat – Medical and Surgical Equipment Trade Data
• Global Medical Device Nomenclature (GMDN) Database

Magazines

• Medical Device & Diagnostic Industry (MD+DI)
• Medical Design & Outsourcing
• Healthcare Packaging
• Needle & Syringe Technology Review
• Clinica Medtech Intelligence
• MedTech Insight
• DeviceMed
• Healthcare Asia Magazine
• Pharmaceutical Technology

Journals

• Journal of Medical Devices (ASME)
• Journal of Infection Prevention
• International Journal of Pharmaceutics
• Journal of Diabetes Science and Technology
• Journal of Biomedical Materials Research
• Journal of Advanced Nursing
• Journal of Clinical Engineering
• Applied Sciences (MDPI) – Medical Devices Section

Newspapers

• The Wall Street Journal – Health & Pharma
• The Economic Times – Healthcare & Life Sciences
• The Hindu Business Line – Medical Devices and Pharma
• Financial Times – Health Industry
• Nikkei Asia – Medical Technology and Manufacturing
• South China Morning Post – Healthcare & Industry
• The Guardian – Health Innovation

Associations

• World Health Organization (WHO) – Safe Injection Practices
• Association for the Advancement of Medical Instrumentation (AAMI)
• Medical Device Manufacturers Association (MDMA)
• International Diabetes Federation (IDF)
• International Federation of Pharmaceutical Manufacturers & Associations (IFPMA)
• Indian Medical Device Industry Association (AiMeD)
• European MedTech Association (MedTech Europe)
• World Federation of Hospital Sterilization Sciences (WFHSS)
• International Council for Harmonisation of Technical Requirements for Pharmaceuticals for Human Use (ICH)

Public Domain Sources

• Ministry of Health and Family Welfare (MoHFW), Government of India
• U.S. Centers for Disease Control and Prevention (CDC) – Injection Safety Reports
• National Institutes of Health (NIH) – Biomedical Innovation Programs
• European Commission – Health Technology and Devices Division
• World Bank – Healthcare Infrastructure and Medical Device Procurement Data
• OECD Health Data Statistics
• Ministry of Economy, Trade and Industry (METI), Japan – Medical Equipment Reports
• Reserve Bank of India (RBI) – Medical Device Manufacturing Insights
• India Investment Grid – Medical Devices Sector
• Department of Pharmaceuticals (DoP), India

Proprietary Elements

• CMI Data Analytics Tool
• Proprietary CMI Existing Repository of information for last 8 years

Definition: Conventional needles which are also known as standard hypodermic needles are the most common type of needles that are used for a variety of medical purposes, ranging from the administration of injectable medications and vaccines to the extraction of fluids from the body, like drawing blood for testing. These needles consist of a hollow metal shaft with a pointed tip for penetration and are attached to a syringe. While effective, conventional needles do not have built-in safety mechanisms to prevent needle stick injuries after use, which is the major difference from safety needles. Safety needles are designed with integrated safety features that aim to protect healthcare workers and patients from needle stick injuries, which can transmit infectious diseases. These mechanisms are activated either automatically after the injection is given or manually by the healthcare provider. Safety needles can come in various forms Retractable needles, where the needle retracts into the syringe barrel after use.