Spes Medica Subdermal Needle Electrodes are intended for use with recording, monitoring and stimulation equipment for the purpose of recording of biopotential signals. Examples include: Electromyography (EMG), Electroencephalograph (EEG) and Nerve potential signals. The electrodes are sterile and for single patient use only.
Device Story
Spes Medica Subdermal Needle Electrodes are sterile, single-use monopolar needles used to record biopotential signals (EMG, EEG, nerve potentials) or deliver micro-stimulation to activate electrical responses. The device consists of a stainless steel needle with an attached lead wire terminating in a safety connector (DIN 42802). It is used in clinical settings by healthcare professionals in conjunction with external recording, monitoring, and stimulation equipment. The needle is inserted into the patient to interface with biological tissue; the electrode captures electrical signals which are transmitted to the external equipment for display and analysis. The healthcare provider uses the output to monitor physiological activity or assess nerve/muscle function, aiding in clinical diagnosis or intraoperative monitoring. The device provides a conductive pathway for signal acquisition and stimulation delivery, benefiting patients by enabling diagnostic neurophysiological testing.
Clinical Evidence
Bench testing only. Testing included biocompatibility (ISO 10993-4, 5, 10, 11), sterility/packaging validation (ISO 11135-1, 11737-1/2, ASTM D4332, D4169), electrical safety (IEC 60601-1), cable tensile strength (avg 40.1 N), impedance/dielectric strength, and shipping/climatic stress tests. Results confirmed the device meets performance specifications and maintains sterility and electrical isolation.
Technological Characteristics
Stainless steel needle; lead wire with DIN 42802 safety connector; hub materials: Polyvinylidene Fluoride/Polyethylene. Dimensions: 0.4-0.6 mm diameter, 7-22 mm length. Sterilization: Ethylene Oxide. Conformance: ISO 10993 series (biocompatibility), ISO 11135/11737 (sterilization), ASTM F88 (seal strength), IEC 60601-1 (electrical safety).
Indications for Use
Indicated for patients requiring recording of biopotential signals (EMG, EEG, nerve potential) via recording, monitoring, or stimulation equipment. For single patient use only.
Regulatory Classification
Identification
A needle electrode is a device which is placed subcutaneously to stimulate or to record electrical signals.
Predicate Devices
Rhythmlink International Subdermal Needle Electrodes (K022914)
Submission Summary (Full Text)
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Image /page/0/Picture/0 description: The image contains the logos of the Department of Health and Human Services and the Food and Drug Administration (FDA). The Department of Health and Human Services logo is on the left, and the FDA logo is on the right. The FDA logo includes the letters "FDA" in a blue square, followed by the words "U.S. FOOD & DRUG ADMINISTRATION" in blue text.
Spes Medica S.r.l. Giorgio Facco Regulatory Affairs & Quality Assurance Via Europa - Zona Industriale Battipaglia (SA), 84091 Italy
Re: K192603
Trade/Device Name: Spes Medica Subdermal Needle Electrodes Regulation Number: 21 CFR 882.1350 Regulation Name: Needle Electrode Regulatory Class: Class II Product Code: GXZ Dated: September 18, 2019 Received: September 20, 2019
Dear Giorgio Facco:
We have reviewed your Section 510(k) premarket notification of intent to market the device referenced above and have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device Amendments, or to devices that have been reclassified in accordance with the provisions of the Federal Food, Drug, and Cosmetic Act (Act) that do not require approval of a premarket approval application (PMA). You may, therefore, market the device, subject to the general controls provisions of the Act. Although this letter refers to your product as a device, please be aware that some cleared products may instead be combination products. The 510(k) Premarket Notification Database located at https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpmn/pmn.cfm identifies combination product submissions. The general controls provisions of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and probibitions against misbranding and adulteration. Please note: CDRH does not evaluate information related to contract liability warranties. We remind you, however, that device labeling must be truthful and not misleading.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 898. In addition, FDA may publish further announcements concerning your device in the Federal Register.
Please be advised that FDA's issuance of a substantial equivalence determination does not mean that FDA has made a determination that your device complies with other requirements of the Act or any Federal statutes and regulations administered by other Federal agencies. You must comply with all the Act's requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part
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801); medical device reporting (reporting of medical device-related adverse events) (21 CFR 803) for devices or postmarketing safety reporting (21 CFR 4, Subpart B) for combination products (see https://www.fda.gov/combination-products/guidance-regulatory-information/postmarketing-safety-reportingcombination-products); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820) for devices or current good manufacturing practices (21 CFR 4, Subpart A) for combination products; and, if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to https://www.fda.gov/medical-device-safety/medical-device-reportingmdr-how-report-medical-device-problems.
For comprehensive regulatory information about medical devices and radiation-emitting products, including information about labeling regulations, please see Device (https://www.fda.gov/medicaldevices/device-advice-comprehensive-regulatory-assistance)and CDRH Learn (https://www.fda.gov/training-and-continuing-education/cdrh-learn). Additionally, you may contact the Division of Industry and Consumer Education (DICE) to ask a question about a specific regulatory topic. See the DICE website (https://www.fda.gov/medical-device-advice-comprehensive-regulatoryassistance/contact-us-division-industry-and-consumer-education-dice) for more information or contact DICE by email (DICE@fda.hhs.gov) or phone (1-800-638-2041 or 301-796-7100).
Sincerely,
Jay Gupta Assistant Director DHT5A: Division of Neurosurgical, Neurointerventional and Neurodiagnostic Devices OHT5: Office of Neurological and Physical Medicine Devices Office of Product Evaluation and Ouality Center for Devices and Radiological Health
Enclosure
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## Indications for Use
510(k) Number (if known) K192603
Device Name
Spes Medica Subdermal Needle Electrodes
#### Indications for Use (Describe)
Spes Medica Subdermal Needle Electrodes are intended for use with recording, monitoring and stimulation equipment for the purpose of recording of biopotential signals. Examples include: Electromyography (EMG), Electroencephalography (EEG) and Nerve potential signals. The electrodes are sterile and for single patient use only.
| Type of Use (Select one or both, as applicable) | |
|-------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------|
| | <span> <span style="padding-right: 5px;"> <span style="font-size: 16px;"></span> </span> Prescription Use (Part 21 CFR 801 Subpart D) </span> |
| | <span> <span style="padding-right: 5px;"> <span style="font-size: 16px;"></span> </span> Over-The-Counter Use (21 CFR 801 Subpart C) </span> |
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# 510(k) Summary
| Manufacturer's Name: | Spes Medica S.r.l.<br>via Europa (Zona Ind.le), 84091 Battipaglia (SA) - Italy |
|----------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Official Correspondent: | Giorgio Facco<br>Quality Assurance and Regulatory Affairs |
| Telephone Number: | 0039 0828 614191 |
| Fax Number: | 0039 0828 341788 |
| Trade Names: | Spes Medica Subdermal Needle Electrodes |
| Common or Usual Name: | Subdermal Needle Electrodes |
| Classification Name: | Needle electrode |
| Device Class: | Class II |
| Product Code: | GXZ |
| Classification Regulation: | 882.1350 |
| Predicate Device: | Rhythmlink International Subdermal Needle Electrodes (K022914) |
| Device Description: | Spes Medica Subdermal Needle Electrodes are monopolar needles intented to use<br>for Electromyography (EMG), Electroencephalograph (EEG) and Nerve potential<br>signals in example and they are intended for use with recording, monitoring and<br>stimulation equipment for the purpose of recording of biopotential signals. The<br>Subdermal Needle Electrodes are used for recording and stimulation (micro<br>stimulation), this stimulation has no therapeutic purpose but has the purpose of<br>activating an electrical response. |
| Intended Use: | Spes Medica Subdermal Needle Electrodes are intended for use with recording,<br>monitoring and stimulation equipment for the purpose of recording of biopotential<br>signals. Examples include: Electromyography (EMG), Electroencephalograph (EEG) and<br>Nerve potential signals. The electrodes are sterile and for single patient use only. |
| Technological Comparison: | The electrodes consist of stainless steel needle with a lead wire attached. The lead<br>wires terminate in a safety connector that cannot be connected to an AC power<br>outlet. The characteristics of Spes Medica Subdermal Needle Electrodes are<br>substantially equivalent to the predicate devices. No new questions of safety or<br>effectiveness are raised, Spes Medica Subdermal Needle Electrodes employ the<br>same technological characteristics as the predicate device. |
| Substantial Equivalence: | Spes Medica Subdermal Needle Electrodes are equivalent to the device cleared<br>under K022914 as is presented below in Table. |
lt has been shown in this 510(k) submission that the differences between the Spes Medica Subdermal Needle Electrodes and the predicate device Rhythmlink International Needle Electrodes do not raise any questions regarding its safety and effectiveness. The Spes Medica Subdermal Needle is substantially equivalent to the predicate device as it has the same intended use and similar technological characteristics as the previously cleared predicate devices. The Spes Medica Subdermal Needle Electrodes, as designed and manufactured to be substantially equivalent to the referenced predicate devices.
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| Manufacturer | Rhythmlink International LLC | Spes Medica S.r.l. | |
|---------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------|
| Trade Name | Rhythmlink International Subdermal Needle Electrodes | Spes Medica Subdermal Needle Electrodes | |
| 510(k) number | K022914 | K192603 | Discussion Differences |
| Product Code | GXZ | GXZ | |
| Intent for use | Rhythmlink International Subdermal Needle Electrodes<br>are intended for use with recording, monitoring and<br>stimulation equipment for the purpose of recording of<br>biopotential<br>signals.<br>Examples<br>include:<br>Electromyography (EMG), Electroencephagraph (EEG)<br>and Nerve potential signals. The electrodes are sterile<br>and for single patient use only. | Spes Medica Subdermal Needle Electrodes are<br>intended for use with recording, monitoring and<br>stimulation equipment for the purpose of recording<br>biopotential<br>signals.<br>Examples<br>include:<br>ot<br>Electromyography<br>Electroencephagraph<br>(EMG),<br>(EEG) and Nerve potential signals. The electrodes are<br>sterile and for single patient use only. | The same of the predicate device |
| Regulation Name | Needle electrode | Needle electrode | The same of the predicate device |
| Regulation Number | 882.1350 | 882.1350 | The same of the predicate device |
| Direction for the use | Select appropriate Subdermal Needle Electrode. When<br>introducing Electrode into patient, do not insert up to<br>hub. If needle bends before, during or after insertion, do<br>not straighten or re-insert. Discard and replace with a<br>new Electrode. CAUTION: Needles are sterile only if<br>packaging is unopened.<br>Cleaning & Disinfecting Instructions - This product is<br>single-patient use only. Discard Electrode after use.<br>Other Needle Varieties - Parallel Pairs, Bent and<br>Corkscrew | (1)Do not use the selected needle if the pouch is<br>damaged;<br>(2)Open the pouch and remove needle from sterile<br>pouch;<br>(3)Connect the needle with the equipment;<br>(4)Remove the needle sheath;<br>(5)Introduce the needle into the area to be tested. Insert<br>the needle up to hub.<br>(6)After the use, dispose the needle according to<br>standard protocols or alternatively put the needle in<br>approve biohazard sharps containers.<br>The electrodes are sterile and for single patient only.<br>Other Needle Varieties - Parallel Pairs, Bent and<br>Corkscrew | No significant difference. |
| Hub Diameter | 1.25 mm | 1.25 mm | The same of the predicate device |
| Needle Length | 7, 13, 19 and 22 mm | 7÷22 mm | The same of the predicate device |
| Needle Diameter | 0.4 mm, 0.6 mm | 0.4 mm, 0.6 mm | The same of the predicate device |
| Connector | DIN 42802 | DIN 42802 | The same of the predicate device |
| Leadwire Lengths | 1.0, 1.5 and 2.5 m | 1.0, 1.5 and 2.5 m | The same of the predicate device |
| Needle | Stainless Steel | Stainless Steel | The same of the predicate device |
| Needle Hub | Polyvinylidene Flouride- Polyethelyne (for cork screw) | Polyvinylidene Flouride- Polyethelyne (for cork screw) | The same of the predicate device |
| Leadwire | Tinned Copper with PVC Jacket Connector | Tinned Copper with PVC Jacket Connector | The same of the predicate device |
| Protective Cover | PVC, Radio-Opaque Blue | PVC, Radio-Opaque Blue | The same of the predicate device |
| Single Use | Yes | Yes | The same of the predicate device |
| Provided to the user<br>sterile | Yes | Yes | The same of the predicate device |
| Sterilization | Ethylene Oxide | Ethylene Oxide | The same of the predicate device |
| Manufacturer | Rhythmlink International LLC | Spes Medica S.r.l. | |
| Trade Name | Rhythmlink International Subdermal Needle Electrodes | Spes Medica Subdermal Needle Electrodes | Discussion Differences |
| 510(k) number | K022914 | K192603 | |
| Product Code | GXZ | GXZ | |
| Shelf life | - | 5 years | - |
| Single Use | Yes | Yes | The same of the predicate device |
| Pouch<br>(Transparent Layer) | Polyethylene | Polyethylene | The same of the predicate device |
| Pouch | Tyvek | Medical Paper | No significant difference. Both<br>materials are validated. |
| Pouch Size | 70 x 160 mm | 75X200 mm | No significant difference |
| Box | Paperboard | Paperboard | The same of the predicate device |
{5}------------------------------------------------
| Performance Testing Summary | | |
|------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Test | Description | Results |
| Cytotoxicity | These methods are designed to determine the biological response of<br>mammalian cells in vitro using appropriate biological parameters. | The test material showed no reactivity |
| Skin Irritation | This method describes the procedure for the assessment of medical<br>devices and their constituent materials with regard to their potential to<br>produce irritation and skin sensitization. | The test material showed a negligible irritation response. |
| Haemolysis test | The aim of the present report is to describe procedure and results obtained<br>for haemolytical potential evaluation test (haemolysis test) of medical<br>device in object. | Subdermal Needles manufactured by purchaser SPES MEDICA does<br>not cause haemolysis. |
| Skin sensitization | This method describes the procedure for the assessment of medical<br>devices and their constituent materials with regard to their potential to<br>produce irritation and skin sensitization. | On the basis of the results the tested item must be considered not<br>sensitizing. |
| Systemic toxicity | This method is a biological evaluation to evaluate the systemic toxicity. | On the basis of the results the tested item doesn't cause toxic<br>symptoms and satisfies the requirements of the test. |
| Pyrogenicity test | The aim of the present report is to describe procedure and results obtained<br>for Pyrogen Test. | On the basis of the results the tested item meets the requirement<br>for the absence of pyrogens |
| Packaging Validation<br>Protocol<br>(5 years of shelflife) | The accelerated aging process describes a procedures for developing<br>accelerated aging protocols to rapidly determine the effects, if any, due to<br>the passage of time on sterile integrity of the sterile barrier system. | The results stated that the devices and the relative packaging have<br>no substantial alterations after aging process<br>the devices results sterile. |
| Performance Testing Summary | | |
| Test | Description | Results |
| Packaging validation test<br>(Sterility test) | The test is performed in order to determine the charge (expressed in<br>$Newton/cm^2$ ) necessary to separate the two sides of the seal. This test is<br>performed on both dry and wet material. | All samples met seal strength requirements per ASTM F88 |
| Cable tensile testing | Spes Medica have been tested to get a feedback on the tensile strength of<br>subdermal needles and to understand the limit value during pull out the<br>cable. | The results obtained show that for Spes Medica subdermal<br>needles have a very hight strength force during the pull-out test.<br>The average is 40.1 N and this value doesn't affect the needle or<br>the connection part but it is the limit of the cables. The results give<br>to Spes Medica subdermal needles the safety of manufacturing<br>process and the strength of the use. |
| Impedance test and<br>dieletrich strength | Spes Medica have been tested to get a feedback on the subdermal needles<br>use not only for recording but also for stimulation. The aim is to confirm<br>that the devices do not lose their features or worsen their performances<br>after stimulation. | The results obtained show that for Spes Medica subdermal<br>needles, stimulation doesn't affect or reduce the needle and its<br>performance |
| Electrically Safety -<br>Isolation | Evaluate the isolation of the product in the different part at different<br>voltage 250V, 500V and 1000V. | The results obtained show that for Spes Medica subdermal<br>needles are isolated and are in compliance with requirements for<br>electrically safety. |
| Shipment Tests | Understand if:<br>• HANDLING TEST,<br>• VEHICLE STACKING TEST,<br>• LOOSE LOAD VIBRATION TEST,<br>• VEHICLE VIBRATION TEST,<br>• CONCENTRATED IMPACT TEST<br>have a impact on packaging and materials | No damage of the product has been observed |
| Climatic Tests | Understand if changing temperature and relative humidity (RH) have<br>effects on packaging and materials which may be related to their field<br>performance. | No damage of the product has been observed |
{6}------------------------------------------------
We specify that the test articles used in the Performance Testing Summary table are incined, sterlized proposed in the 510() submission per formulation, suppliers, processing, packaging (including dose and duration), and geometry and no chemicals have been added (eg, plasticies, fillers, color additives, cleaning agents, mold release agents).
{7}------------------------------------------------
#### Performance testing - conformance to international standards
The Spes Medica Subdermal Needle Electrodes demonstrated conformance to the following applicable international standards:
- Biocompatibility: ISO 10993-4, 10993-5, 10993-10, and 10993-11
- Sterilization/packaging: ISO 11135-1, 11737-1, and 11737-2; ASTM D4332, ASTM D4169
- Electrical safety:IEC 60601-1: 3rd Ed + CORR 2:2007 + A1:2012 clause 8.5.2.3
#### Conclusion
All performance testing conducted as outlined above demonstrate that the performance and design specifications. Based on the results obtained, Spes Medica Subderma Needle Electrodes are substantially equivalent and performs as well as the the predicate devices (K022914).
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1. Search: exact and fuzzy
Type a phrase like "coronary artery calcification" into the search box. You get two kinds of results. Exact results match the literal phrase — prefix searches work ("coronary artery calcificati") but suffix searches do not. Fuzzy results match on the meaning and intent of your phrase rather than the exact words, and are sorted by relevance score. Hover over the Exact or Fuzzy badge on any row to see exactly why it matched.
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Head to the search page and work through a few of these AI/ML fuzzy searches to build intuition: perivascular fat on CT · aortic valve calcification opportunistic screening on noncontrast CT · breast cancer prediction on digital pathology slides · autism detection · gestational age prediction · a hearing aid that can also detect a pulse · foundation model based analysis of ECG · large language models · penetration test. Watch how the relevance scores, intended use, and AI Performance tables tell you when results stop being meaningful.