← Product Code [FMF](/submissions/HO/subpart-f%E2%80%94general-hospital-and-personal-use-therapeutic-devices/FMF) · K953940 # TERUMO RETRACTABLE NEEDLE (RN) SYRINGE (K953940) _Terumo Medical Corp. · FMF · May 21, 1996 · General Hospital · SESE_ **Canonical URL:** https://fda.innolitics.com/submissions/HO/subpart-f%E2%80%94general-hospital-and-personal-use-therapeutic-devices/FMF/K953940 ## Device Facts - **Applicant:** Terumo Medical Corp. - **Product Code:** [FMF](/submissions/HO/subpart-f%E2%80%94general-hospital-and-personal-use-therapeutic-devices/FMF.md) - **Decision Date:** May 21, 1996 - **Decision:** SESE - **Submission Type:** Traditional - **Regulation:** 21 CFR 880.5860 - **Device Class:** Class 2 - **Review Panel:** General Hospital - **Attributes:** Therapeutic ## Indications for Use The intended use of the Terumo Medical Corporation (Terumo) RN Syringe is to inject fluids into, or withdraw fluids from, the body below the surface of the skin for medical purposes. ## Device Story Sterile, single-use syringe with integrated needle retraction mechanism; designed for manual operation by clinicians. Device functions as standard hypodermic syringe for fluid injection/aspiration. Post-injection, user locks needle hub to plunger adapter; withdrawing plunger retracts needle into barrel, preventing reuse. Eliminates need for external locking rings found in predicate devices. Intended to reduce accidental needlestick injuries. Used in clinical settings; requires no change in standard injection technique. ## Clinical Evidence No clinical data. Substantial equivalence established via design, material, and functional comparison to predicate devices. Bench testing included biocompatibility (ISO 10993), pyrogenicity (U.S.P. XXIII), and mechanical testing (lock-out and drop tests) to verify needle retraction integrity. ## Technological Characteristics Materials identical to standard Terumo syringes with addition of silicone 'O' ring. Sterilization via gamma radiation (SAL 10^-6). Manual operation; no energy source. Biocompatibility per ISO 10993 for external communicating, blood path, indirect, short-term exposure. ## Regulatory Identification A piston syringe is a device intended for medical purposes that consists of a calibrated hollow barrel and a movable plunger. At one end of the barrel there is a male connector (nozzle) for fitting the female connector (hub) of a hypodermic single lumen needle. The device is used to inject fluids into, or withdraw fluids from, the body. ## Predicate Devices - Terumo Hypodermic Syringes with Needles ([K771205](/device/K771205.md), [K771203](/device/K771203.md)) - U.S. Medical Instruments SafeSnap™ syringe ([K925039](/device/K925039.md)) ## Submission Summary (Full Text) > This content was OCRed from public FDA records by [Innolitics](https://innolitics.com). If you use, quote, summarize, crawl, or train on this content, cite Innolitics at https://innolitics.com. > > Innolitics is a medical-device software consultancy. We help companies design, build, and clear FDA-regulated software and AI/ML devices, including [a 510(k)](https://innolitics.com/services/510ks/), [a De Novo](https://innolitics.com/services/regulatory/), [a SaMD](https://innolitics.com/services/end-to-end-samd/), [an AI/ML medical device](https://innolitics.com/services/medical-imaging-ai-development/), or [an FDA regulatory strategy](https://innolitics.com/services/regulatory/). {0} TERUMO TERUMO MEDICAL CORPORATION K953940 MAY 21 1996 REGULATORY AFFAIRS DEPARTMENT 25 BLUE BALL ROAD ELKTON, MARYLAND 21921 TELEPHONE: (410) 392-7231 FAX: (410) 398-6079 # 510(k) SUMMARY Name of the Device: Terumo Retractable Needle (RN) Syringe ## Predicate Product(s): There are two products referenced as predicates for the Terumo RN Syringe: - Terumo Hypodermic Syringes with Needles, K771205 and K771203. - U.S. Medical Instruments SafeSnap™ syringe, K925039. ## Description of the Subject Device: The Terumo RN Syringe is a sterile, single use device designed to be similar to present single use products. A needle retraction feature allows the user to withdraw the needle into the barrel of the syringe immediately after use. ## Intended Use of the Device: The intended use of the Terumo Medical Corporation (Terumo) RN Syringe is to inject fluids into, or withdraw fluids from, the body below the surface of the skin for medical purposes. ## Comparison of Subject Device to Predicate Device(s): The Terumo RN Syringe is similar in design, feel and function to a standard Terumo hypodermic syringe with needle. This syringe provides the user with a product similar to a standard disposable syringe that will require little, or no change in the technique that is presently used. The materials in the subject device are the same as Terumo's standard hypodermic syringe and needle with the exception of the addition of an "O" ring made of silicone. These materials have been tested and as a part of the whole product biocompatibility testing in accordance with the current CDRH guidance. The needle retraction mechanism of the Terumo RN Syringe locks the needle hub with an adapter on the distal end of the plunger after injection, and allows the needle to be withdrawn into the barrel of the syringe. The predicate syringe requires the user to ensure that the plunger rod has locked into the needle carrier and then to disengage an external locking ring after the completion of the injection. The withdrawal of the plunger rod retracts the needle within the barrel of the syringe. The user then snaps off the plunger rod and inserts the broken segment of the rod into the open end of the barrel and, disposes of the unit in an appropriate sharps container. The needle retraction mechanism of the Terumo RN Syringe is similar to that of the predicate product, except there is no need to disengage a locking ring. The retraction feature of both devices prevents the accidental reuse of the device. {1} - 2 - 067 ## Safety Information: - The Terumo RN Syringe is sterilized by gamma radiation to provide a Sterility Assurance Level (SAL) of 10⁻⁶. - Blood or fluid contacting materials were tested as the whole device for biocompatibility using the FDA's modification of the ISO 10993 Standard as an external communicating device; blood path, indirect; short term exposure and found to be biocompatible. - The product was found pyrogen free when tested in accordance with U.S.P. XXIII. - Shelf life for the RN Syringe is based on our experience with Terumo's standard syringes. An additional accelerated test program will be intended that will confirm the full dating period. ## Performance Data: ### Discussion of Non-Clinical Tests The non-clinical tests performed on the Terumo RN Syringe are the same protocols and standards used for the evaluation of our standard syringe products. In addition the needle retraction feature was tested with a lock-out and drop test to assure that the needle would remain retracted within the barrel of the device. ### Discussion of Clinical Tests An analysis of the similarities in design, materials, use and function of the Terumo RN Syringe with the predicate products, establishes that the need for simulated clinical use and actual clinical use testing is unnecessary. ### Conclusions Drawn from Testing Since the device is similar to current single use syringes and the needle retraction function is essentially equivalent to the predicate product, there are no new issues of safety or effectiveness involved in the use of the Terumo RN Syringe. *** TMC's statement that these devices are substantially equivalent to any other device is done solely to comply with the requirements of the Federal Food, Drug, and Cosmetic Act and is not intended whatsoever to be the basis for a patent infringement action. ## Submitter's Information: Alan B. Hershman, R.A.C. Manager of Regulatory Affairs Terumo Medical Corporation Regulatory Affairs Department 125 Blue Ball Road Elkton, MD 21921 Phone 410/392-7231 Fax 410/398-7069 Date of Summary: 08/14/95 --- **Source:** [https://fda.innolitics.com/submissions/HO/subpart-f%E2%80%94general-hospital-and-personal-use-therapeutic-devices/FMF/K953940](https://fda.innolitics.com/submissions/HO/subpart-f%E2%80%94general-hospital-and-personal-use-therapeutic-devices/FMF/K953940) **Published by [Innolitics](https://innolitics.com)** — a medical-device software consultancy. We help companies design, build, and clear FDA-regulated software and AI/ML devices. 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