The Hygia Health Services Reprocessed Novamedix ImPad® is designed to enhance circulation of blood. It is to be used by patients in both the home and institutional settings as a non-invasive therapeutic method to: - DVT prophylaxis - Acute and chronic edema - Extreme pain after trauma or surgery - Treat leg ulcers and venous stasis/insuffic
Device Story
Device is a reprocessed intermittent pneumatic compressible limb sleeve; placed around patient's plantar arch. Constructed of brushed nylon over closed-cell foam; secured with polyethylene hook and loop fasteners. Operates by connecting to an external controller that cycles ambient air to inflate/deflate a single bladder. Compression of plantar plexus collapses veins longitudinally to eject blood upward; deflation allows venous refill. Used in home or institutional settings; applied by patients or clinicians. Output is mechanical compression; intended to prevent DVT and treat edema/venous insufficiency. Reprocessing involves a validated chemical-free high-level disinfection process to enable reuse of a device originally labeled for single-patient use.
Clinical Evidence
Bench testing only. Comparative bench testing assessed compression, pressure capabilities, and operational parameters, confirming substantial equivalence to the predicate. Biocompatibility was assessed via a NIH-level human skin patch test for irritation and sensitization, with no adverse findings.
Technological Characteristics
Materials: Brushed nylon, closed-cell foam, polyethylene hook and loop fasteners. Energy source: External pneumatic controller (ambient air). Form factor: Limb sleeve for plantar arch. Connectivity: Mechanical connection to controller. Sterilization: Chemical-free high-level disinfection process.
Indications for Use
Indicated for patients in home or institutional settings requiring enhanced blood circulation for DVT prophylaxis, treatment of acute/chronic edema, management of post-trauma/surgery pain, and treatment of leg ulcers or venous stasis/insufficiency. Contraindicated in patients with congestive heart failure, known/suspected DVT, thrombophlebitis, pulmonary embolism, severe arteriosclerosis/ischemic vascular disease, or local leg conditions (dermatitis, gangrene, recent skin grafts, untreated infected wounds).
Regulatory Classification
Identification
A compressible limb sleeve is a device that is used to prevent pooling of blood in a limb by inflating periodically a sleeve around the limb.
Predicate Devices
Novamedix A-V Impulse System Rigid Sole Foot Cover (K021509)
Submission Summary (Full Text)
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16021509
# 510(k) Summary
# Summary
## Substantial Equivalence Summary for the Hygia Health Services Reprocessed Novamedix ImPad®.
In accordance with 21 CFR Part 807.92, this summary is submitted by:
Hygia Health Services, Inc. 2800 Milan Court Suite 259 Birmingham, Alabama 35211
Date: April 30, 2002
#### 1. Contact Person
Geoff M. Fatzinger BS, MS Director, Compliance and Regulatory Affairs (205) 943-6670
#### 2. Name of Device
Classification Name: Compressible Limb Sleeve Common or Usual Name: Intermittent Pneumatic Compressible Limb Sleeve Review Panel: Cardiovascular Classification: Class II Proprietary Name: Hygia Health Services Reprocessed Novamedix ImPad®
### HYGIA HEALTH SERVICES
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## Predicate Device
Classification Name: Compressible Limb Sleeve Common Name: Intermittent Pneumatic Compressible Limb Sleeve Classification: Class II Novamedix A-V Impulse System Rigid Sole Foot Cover Proprietary Name:
#### Statement of Substantial Equivalence 4.
The Hygia Health Services Reprocessed Novamedix ImPad® employs no new technology other than the method used to reprocess the garment in order to allow the device to be utilized more than once. The Hygia Health Services Reprocessed Novamedix ImPad® is substantially equivalent to the Novamedix ImPad® in that the basis of operation for both of the devices is the intermittent inflation of a single bladder, which is placed around the patient's plantar arch. The garments are then connected to a controller. Inflation of the device is accomplished using ambient air, and a controller cycle that functions to alternately inflate and deflate the device in a predetermined manner and interval.
The Hygia Health Services Reprocessed Novamedix ImPad® is substantially equivalent in function, operating parameters, and intended use to the Novamedix ImPad® that is currently commercially available and in distribution. The predicate device, the Novamedix ImPad®, is marked for "single-patient use only". Hygia Health Services does not change the device in any way except to render the device "reusable" by placing it through a scientifically validated chemical free high-level disinfection process. The Hygia Health Services highlevel disinfection protocol does not alter the device's efficacy, safety. composition, or intended use. Hygia Health Services also includes the statement "single-patient use only" on the labeling.
#### Description of the Device 5.
The Hygia Health Services Reprocessed Novamedix ImPad® Garment is an intermittent compressible limb device that is placed around the patient's foot with the compression chamber placed under the plantar arch. The garment is constructed out of brushed nylon over a thin layer of closed cell foam. The device is secured using hook and loop fasteners made of polyethylene. As the garment compresses the plantar plexus, the veins collapse longitudinally, which increases the venous pressure thus ejecting the blood upward. After compression, the devices deflate allowing the veins to refill and bring oxygenated blood to the lower limbs. The controller predetermines the inflation and deflation sequence. The pressure of compression, hold time , and inflation/deflation time is determined by the controller. It is the responsibility of the end user to ensure that
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the device is connected to an approved controller and to ensure that the controller settings are accurate.
#### Intended Use of Device 6.
The Hygia Health Services Reprocessed Novamedix ImPad® operates in the identical manner as the predicate device, the Novamedix ImPad®. It is designed to apply compression to a patient's plantar plexus for the prevention of deep vein thrombosis (DVT) as well as the treatment of edema secondary to venous insufficiency. The devices are used in both the home and institutional settings on patient populations for which a leg or calf compression device would not be applicable. It can be used under a cast or splint.
#### 7. Technological Characteristics
The technological characteristics of the Hygia Health Services Reprocessed Novamedix ImPad® are identical to the predicate device in overall design, materials, energy source, mode of operation, and performance characteristics.
#### 8. Performance Data
Nonclinical Tests- Comparative bench testing was utilized to assess and prove similarity of function between the Hygia Health Services Reprocessed Novamedix ImPad® and the predicate device. All tests found that functional and operational performance characteristics including compression, pressure capabilities, and both safety and operational parameters were substantially equivalent.
#### 9. Biocompatibility
In order to ensure that the Hygia Health Service high-level disinfection program did not adversely affect the biocompatibility of the device, a NIH level combination irritation/sensitization human skin patch test was conducted. The detailed protocols of the study are included in the premarket submission. No signs of irritation or sensitization were found.
Test Conclusions- Nonclinical test results of the Hygia Health Services Reprocessed Novamedix ImPad® indicated substantial equivalence in all aspects to the predicate device.
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### DEPARTMENT OF HEALTH & HUMAN SERVICES
Food and Drug Administration 200 Corporate Boulevard Rockville MD 20850
DEC 2 4 2002
Hygia Health Services, Inc. c/o Mr. Geoff M. Fatzinger, BS, MS Director of Compliance and Regulatory Affairs 2800 Milan Court, Suite 259 Birmingham, AL 35211
Re: K021509
Trade Name: Hygia Health Services Reprocessed Novamedix ImPad® Regulation Number: 21 CFR. 870.5800 Regulation Name: Compressible Limb Sleeve Regulatory Class: Class II (two) Product Code: JOW Dated: October 10, 2002 Received: October 11, 2002
Dear Mr. Fatzinger:
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. 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.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to such 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.
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## Page 2 - Mr. Geoff M. Fatzinger, BS, MS
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); 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. This letter will allow you to begin marketing your device as described in your Section 510(k) premarket notification. The FDA finding of substantial equivalence of your device to a legally. marketed predicate device results in a classification for your device and thus, permits your device to proceed to the market.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please contact the Office of Compliance at (301) 594-4646. Additionally, for questions on the promotion and advertising of your device, please contact the Office of Compliance at (301) 594-4639. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR Part 807.97). Other general information on your responsibilities under the Act may be obtained from the Division of Small Manufacturers. International and Consumer Assistance at its toll-free number (800) 638-2041 or (301) 443-6597 or at its Internet address http://www.fda.gov/cdrh/dsma/dsmamain.html
Sincerely vours,
Dna Munkee for
Bram D. Zuckerman, M.D.
Director Division of Cardiovascular Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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- Indications for Use
# Indications For Use
Applicant: Hygia Health Services, Inc.
510(k) Number: K 021509
Device Name: Hygia Health Services Reprocessed Novamedix ImPad®
Indications For Use:
The Hygia Health Services Reprocessed Novamedix ImPad® is designed to enhance circulation of blood. It is to be used by patients in both the home and institutional settings as a non-invasive therapeutic method to:
- DVT prophylaxis
- Acute and chronic edema ●
- Extreme pain after trauma or surgery ●
- . Treat leg ulcers and venous stasis/insuffic
# PRECAUTIONS AND CONTRAINDIC
Contraindications:
DANGER: DO NOT USE IN THE PRESENCE OF FLAMMABLE ANESTHETICS AVOID FREEZING AND EXCESSIVE HEAT
Wraps may not be recommended for patients with the following:
- Congestive heart failure or where an increase of fluid to the heart might be 1 . detrimental
510(k) Num
- 2. Known or suspected deep vein thrombosis, pre-existing deep vein thrombosis, thrombophlebitis, or pulmonary embolism.
- ر ب Severe arteriosclerosis or other ischemic vascular disease
- Any local leg condition in which the wrap would interfere such as 4 dermatitis, gangrene, recent skin graft, or untreated infected wounds
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### Indicațions for Use
:
・
## Precautions:
.
- One must ensure that the wrap is applied properly. 1 ..
- One must ensure that the w ectly connected to the pump and that 2. the connection is secure.
- If the patient experiences numbness, tingling, or leg pain, the wrap should 3. be removed.
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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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Exact vs. fuzzy search: what's the difference?
Exact matches on the literal phrase (prefix search works, suffix does not). Fuzzy matches on the meaning and intent of the phrase rather than the exact words. Hover over the badge on any row to see why it matched.
You search "coronary artery calcification" and want only software devices with AI. What two filters do you apply?
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Scroll right in the results table. The intended use is extracted for you — no need to open the PDF. The device story gives a high-level snapshot of what the device does and how it's used. The AI Performance sub-table shows each output name, acceptance criteria, observed values, and development/test dataset descriptions — the same format Innolitics uses for regulatory strategy outputs, and the fastest high-level fingerprint of an AI device. It is AI-generated but has been very reliable in practice.
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Scroll right in the search results table. The intended use column is extracted for you; no need to dig into the 510(k) summary PDF.
What does the AI Performance sub-table show, and why is it useful?
Output name, acceptance criteria, observed values, development dataset description, and test dataset description. It's the same format we use for regulatory strategy output and Fast 510(k) input, and the fastest high-level fingerprint of an AI device. AI-generated but reliable in practice.
3. Judging fuzzy relevance
Fuzzy results trail off in relevance as you scroll. Use three signals to decide how far down to go: the fuzzy badge explanations, the intended use column, and whether your target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, you're past the relevant zone. A top hit with a low score (~0.4) and a stretched explanation is a hint the closest predicates are far away — the project may be headed for De Novo. Note the fuzzy search is a pattern match: it doesn't handle negation ("not") well, and hardware devices can appear — filter by SaMD/AI ML to cut them.
How do you judge how far down fuzzy search results to go?
Use the relevancy signals: the fuzzy badge explanations, the intended use column, and whether the target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, results are trailing off in relevancy.
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Reading rule for every project: how many summaries do you read in full?
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Select multiple rows in the results table (aim for under ~10), then open the PDF Viewer tab. Ask one question — it goes to all selected devices in parallel, each with citations. This is the fastest way to compare and contrast devices: training data, PCCP scope, how they handled adding new scanners, and so on.
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Open the Predicates tab for a family-tree view of predicate relationships. Click a node to trace its parents and children; selections from search carry over pre-selected. Commonly predicated devices are worth reading — a lot of people predicated them for a reason. The visual lineage is also handy on client calls, e.g. to show how a predicate family evolved and justify why your predicate still holds.
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A lot of people predicated them for a reason. Clicking a node traces parents and children, and selections from search carry over pre-selected.
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The Embeddings tab plots every matching document in a 2-D "galaxy map" where semantically similar devices cluster together. Hover or click clusters to explore, and let AI label the clusters for you. Embeddings beat product codes for grouping: two devices can carry different product codes (LLZ vs. QIH) yet do the same thing — the embedding captures the meaning of the intended use and device story. This is also exactly how retrieval-augmented generation (RAG) works under the hood, and it makes a great visual on client calls.
Try it yourself
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.