(41 days)
The LipoSonix system delivers high intensity focused ultrasound (HIFU) energy that can disrupt subcutaneous adipose tissue (SAT) to provide a non-invasive approach to achieve a desired aesthetic effect.
The LipoSonix system is specifically indicated for non-invasive waist circumference reduction
The LipoSonix system is a cart-based medical device intended for non-invasive disruption of subcutaneous adipose tissue (SAT) by employing ultrasound energy. The system consists of a cart, a detachable handpiece and a user interface display in one unit.
The provided text describes the LipoSonix® system Model 2, a focused ultrasound stimulator for aesthetic use, and its performance evaluation in a clinical study.
Here's an analysis of the acceptance criteria and the study that proves the device meets them:
1. Table of Acceptance Criteria and Reported Device Performance
| Acceptance Criterion (Implicit) | Reported Device Performance |
|---|---|
| Primary Efficacy Endpoint: Superiority to sham control in reducing waist circumference. | The 59 J/cm² treatment group demonstrated a 1.01 cm greater waist circumference reduction as compared to sham. The least square (LS) mean change from baseline to 12 weeks in the 59 J/cm² group was -2.44 cm. On average, the mean change in waist circumference was approximately 2.55 cm (1 inch) compared to baseline, which "could equal one dress or pant size." This met the pre-specified primary endpoint. |
| Safety Endpoint: Acceptable safety profile with mostly mild, short-lived, and resolvable adverse events. | The AEs (Adverse Events) resulting from treatment were mostly mild, short-lived in duration, and resolved without incident, assessed through 24 weeks post-treatment. There were no serious adverse events (SAEs) or unanticipated adverse device effects (UADEs) related to the treatment. This indicates an acceptable safety profile. |
| Non-clinical safety and performance (Thermal, electrical, electromagnetic, mechanical safety, etc.) | The system was found to conform to "essential specifications, thermal, electrical, electromagnetic and mechanical safety" and "FDA consensus, medical device safety standards and international harmonized standards." Specific risks from the FDA special control guidance document were addressed, including: Thermal Injury, Mechanical Injury, Ocular Injury, Electrical Shock, Inflammation/Foreign Body Response, and Use Error. (While no specific metrics are given for these, the statement confirms they were addressed and conformed to standards.) |
2. Sample Size Used for the Test Set and Data Provenance
- Sample Size: The document only refers to a "multicenter, randomized study." It does not explicitly state the total number of participants in the study or specifically the test set (which in this context is the entire study population used for evaluation). It only mentions the performance of the "59 J/cm² treatment group."
- Data Provenance: The document states it was a "multicenter, randomized study." While the specific countries are not mentioned, the context of a 510(k) submission to the FDA for a US company suggests it likely involved studies conducted in the USA or under internationally recognized clinical trial guidelines. It is a prospective study, given that it's a "randomized study" evaluating treatment effects over time (baseline to 12 weeks, safety assessed through 24 weeks).
3. Number of Experts Used to Establish Ground Truth for the Test Set and Their Qualifications
This information is not provided in the document. The study measures objective outcomes (waist circumference reduction) and reports adverse events, which are typically assessed by clinical investigators and not
ground-truthed by independent experts in the same way an image interpretation study might be. Expert interpretation for efficacy assessment beyond the direct measurements is not applicable here.
4. Adjudication Method for the Test Set
This information is not provided in the document. For objective measurements like waist circumference, inter-observer variability would ideally be addressed by standardized measurement protocols rather than an adjudication process typically seen in subjective assessments. Adverse events are usually reported and classified by the treating physician/investigator.
5. If a Multi-Reader Multi-Case (MRMC) Comparative Effectiveness Study Was Done, and the Effect Size
An MRMC study is not applicable here as this is a device for physical intervention (waist circumference reduction) and not an imaging-based diagnostic or screening tool requiring human reader interpretation. The study was a "multicenter, randomized study" comparing the device to a sham control, focusing on objective physical measurements and safety.
6. If a Standalone (i.e., algorithm only without human-in-the-loop performance) Was Done
This is not applicable to this device. The LipoSonix system is a physical treatment device, not an AI algorithm. Its performance is the direct outcome of the device application.
7. The Type of Ground Truth Used
The ground truth for efficacy was direct physical measurement: "waist circumference reduction." This is an objective, quantifiable anatomical change.
For safety, the ground truth was clinical observation and recording of adverse events by medical professionals.
8. The Sample Size for the Training Set
This information is not applicable as the LipoSonix system is a medical device for physical intervention, not an AI algorithm that requires a training set.
9. How the Ground Truth for the Training Set Was Established
This information is not applicable for the same reason as above.
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LipoSonix® system Model 2 Special 510(k) Premarket Notification Medicis Technologies Corporation
510(k) Summary
In accordance with 21 CFR 807.92(c) the following summary of information is provided:
| Date Prepared: | September 8, 2011 |
|---|---|
| Submitter: | Medicis Technologies Corporation11818 North Creek Parkway NorthBothell, WA 98011 USA |
| Contact Person: | Michael A. Hoffman, MPHVice President - Regulatory Affairs and Quality SystemsMedicis Technologies Corp.11818 North Creek Parkway NorthBothell, WA 98011 USA |
| Telephone: | 425.420.2135 |
| Facsimile: | 425.420.2335 |
| FR Number: | 21 CFR 878.4590 |
| Product Code: | OHV |
| Classification Name | Focused Ultrasound Stimulator System for Aesthetic Use |
| Common Name: | Focused Ultrasound Stimulator System for Aesthetic Use |
| Trade Name: | LipoSonix® system Model 2 |
| Regulatory Class: | Class II |
| ClassificationAdvisoryCommittee: | Division of General, Restorative and NeurologicalDevices; General Surgery Devices Branch |
| Special Controls: | Class II Special Controls Guidance Document: FocusedUltrasound Stimulator System for Aesthetic Use (July 20,2011) |
| Predicate Device(s): | K100874, LipoSonix® system Model 1 |
| IntendedUse/Indications forUse: | The LipoSonix system delivers high intensity focusedultrasound (HIFU) energy that can disrupt subcutaneousadipose tissue (SAT) to provide a non-invasive approachto achieve a desired aesthetic effect.The LipoSonix system is specifically indicated for non-invasive waist circumference reduction |
| Contraindications: | A patient is ineligible for treatment with the LipoSonix system if any of the following criteria are met:The patient is a female who is pregnant, may be pregnant, or is lactating. Female patients of child bearing age should have a negative pregnancy test before being treated with the LipoSonix system. The patient has less than 1.0 cm of adipose tissue thickness beyond the selected treatment focal depth in the area to be treated. Hernia in the area to be treated. |
| Device Description: | The LipoSonix system is a cart-based medical device intended for non-invasive disruption of subcutaneous adipose tissue (SAT) by employing ultrasound energy. The system consists of a cart, a detachable handpiece and a user interface display in one unit. |
| Technology: | The LipoSonix system accomplishes its intended use through the use of precisely targeted high intensity focused ultrasound energy that produces a thermal cellular disruption in the subcutaneous adipose tissue (soft tissue). This thermal energy also causes collagen to contract. Thus creating a dual tissue response. The destroyed adipose tissue is subsequently cleared via an |
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LipoSonix® system Model 2 Special 510(k) Premarket Notification Medicis Technologies Corporation
lymphatic system.
inflammatory response by macrophages that transported the destroyed cells and their contents to the liver via the
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K11 2626 pg.3 of 4.
LipoSonix® system Model 2 Special 510(k) Premarket Notification Medicis Technologies Corporation
Summary of Non-Clinical Tests: Determination of
The system has been found to conform to the system Substantial essential specifications, thermal. electrical. Equivalence: electromagnetic and mechanical safety, and has been found to conform to FDA consensus, medical device safety standards and international harmonized standards.
The following risks as identified in the FDA special control quidance document entitled, "Class II Special Controls Guidance Document: Focused Ultrasound Stimulator System for Aesthetic Use" have been addressed.
- Thermal Injury from Focused Ultrasound Exposure . (Thermal Damage)
- Mechanical Injury from Focused Ultrasound Exposure .
- (Cavitation or other Mechanical Damage) .
- . Ocular Injury
- Electrical Shock
- Inflammation/Foreign Body Response ●
- Use Error ●
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LipoSonix® system Model 2 Special 510(k) Premarket Notification
The LipoSonix system was evaluated in a multicenter, Performance Data: randomized study. Treatment with the LipoSonix system was shown to be superior to a sham control in reducing waist circumference, meeting the pre-specified primary endpoint of the study. The 59 J/cm² treatment group demonstrated a 1.01 cm greater waist circumference reduction as compared to sham. The least square (LS) mean change from baseline to 12 weeks of the waist circumference in the same 59 J/cm2 group was -2.44 cm. On average, the mean change in waist circumference of approximately 2.55 cm (1 inch) compared to baseline that was demonstrated in the 59 J/cm2 treatment group. This could equal one dress or pant size.
The safety of treatment with the LipoSonix system was assessed through 24 weeks post-treatment. The AEs resulting from treatment with the LipoSonix system during this study were mostly mild, short-lived in duration, and resolved without incident. There were no serious adverse events (SAEs) or unanticipated adverse device effects (UADEs) related to treatment with the investigational device.
The LipoSonix system is substantially equivalent to the Substantial LipoSonix system Model1 (K100874) device. Equivalence:
The LipoSonix system Model 2 has the same intended use as the Model 1 system, namely performing a noninvasive treatment to achieve a desired aesthetic effect. Both systems use the same technological principles, namely HIFU, to thermally disrupt soft tissues which result in the aesthetic affect. The mechanism of action for both devices is essentially the same as well. Disrupted soft tissue is removed by normal healing processes of the body resulting in an aesthetic affect. Both devices can deliver more than one energy dose.
Therefore, the LipoSonix system Model 2 is substantially equivalent to the predicate device.
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Image /page/4/Picture/1 description: The image shows the logo for the Department of Health & Human Services USA. The logo features a stylized eagle with three stripes representing the three branches of government. The text "DEPARTMENT OF HEALTH & HUMAN SERVICES USA" is arranged in a circular pattern around the eagle.
Food and Drug Administration 10903 New Hampshire Avenue Document Control Room -W066-G609 Silver Spring, MD 20993-0002
OCT 2 0 2011
Medicis Technologies Corporation % Michael A. Hoffman, MPH Vice President - Regulatory Affairs and Quality Systems 11818 North Creek Parkway North Bothell, Washington 98011
Re: K112626
Trade/Device Name: LipoSonix® System Model 2 Regulation Number: 21 CFR 878.4590 Regulation Name: Focused ultrasound stimulator system for aesthetic use Regulatory Class: Class II Product Code: OHV Dated: October 04, 2011 Received: October 04, 2011
Dear Mr. Hoffman:
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, Orug, 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. The general controls provisions of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions 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 musicading.
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 tan 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.
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Page 2 - Michael A. Hoffman, MPH
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 801); medical device reporting (reporting of medical device-related adverse events) (21 CFR 803); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820); and if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please go to http://www.fda.gov/AboutFDA/CentersOffices/CDRH/CDRHOffices/ucm115809.htm for the Center for Devices and Radiological Health's (CDRH's) Office of Compliance. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to
http://www.fda.gov/MedicalDevices/Safety/ReportaProblem/default.htm for the CDRH's Office of Surveillance and Biometrics/Division of Postmarket Surveillance.
You may obtain other general information on your responsibilities under the Act from the Division of Small Manufacturers, International and Consumer Assistance at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address http://www.fda.gov/MedicalDevices/Resourcesfor You/Industry/default.htm.
Sincerely yours,
Evin L. Keith
For Mark N. Melkerson Director Division of Surgical, Orthopedic and Restorative Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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Indications for Use
510(k) Number (if known): This Submission
Device Name: LipoSonix® system Model 2
Indications For Use:
The LipoSonix system delivers high intensity focused ultrasound (HIFU) energy that can disrupt subcutaneous adipose tissue (SAT) to provide a non-invasive approach to achieve a desired aesthetic effect.
The LipoSonix system is specifically indicated for non-invasive waist circumference reduction.
Prescription Use
AND/OR Over-The-Counter Use
(Part 21 CFR 801 Subpart D)
(21 CFR 801 Subpart C)
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
NilkRedden for mkm
(Division Sign-Off)
Division of Surgical, Orthopedic, and Restorative Devices
Page 1 of
510(k) Number K112626
Section 18 - Indications for Use
§ 878.4590 Focused ultrasound stimulator system for aesthetic use.
(a)
Identification. A Focused Ultrasound Stimulator System for Aesthetic Use is a device using focused ultrasound to produce localized, mechanical motion within tissues and cells for the purpose of producing either localized heating for tissue coagulation or for mechanical cellular membrane disruption intended for noninvasive aesthetic use.(b)
Classification. Class II (special controls). The special control for this device is FDA's “Class II Special Controls Guidance Document: Focused Ultrasound Stimulator System for Aesthetic Use.” See § 878.1(e) for the availability of this guidance document.