Teeter Decompression Devices are multiple user, reusable devices for home use, intended to provide traction to the spine while stretching the para-spinal muscles and soft tissues. The devices provide non-powered traction and are meant for use by adults. Use of the Teeter Decompression Devices is indicated for the following conditions: back pain, muscle tension, degenerative disc disease, spinal degenerative joint disease, spinal stenosis, herniated disc, spinal curvature due to tight muscles, sciatica, muscle spasm, and facet syndrome.
Device Story
Teeter Decompression Devices are non-powered, user-controlled orthopedic traction apparatuses for home use. The product family includes manual inversion tables, gravity boots, forward rotation devices, portable decompression devices, and horizontal decompression tables. Inversion-based models use gravity and the user's body weight to create progressive traction; manual models (portable/horizontal) use bilateral upper extremity force against stationary lower extremities to apply traction. Devices are constructed from powder-coated steel, plastic, and foam. Users operate the devices independently to stretch paraspinal muscles and soft tissues, decompressing spinal joints. The user controls the intensity and duration of traction. By flattening the lumbar curve or utilizing inversion angles, the devices aim to increase muscle relaxation and provide spinal decompression, potentially alleviating symptoms associated with various spinal conditions.
Clinical Evidence
No clinical data provided. Evidence consists of safety evaluations and risk analysis.
Technological Characteristics
Materials: powder-coated steel, plastic, foam. Principle: non-powered mechanical traction via gravity (inversion) or manual leverage (supine). Form factor: various mechanical frames (tables, boots, portable devices). Connectivity: none (standalone). Sterilization: N/A.
Indications for Use
Indicated for adults experiencing back pain, muscle tension, degenerative disc disease, spinal degenerative joint disease, spinal stenosis, herniated disc, spinal curvature due to tight muscles, sciatica, muscle spasm, and facet syndrome.
Regulatory Classification
Identification
A nonpowered orthopedic traction apparatus is a device that consists of a rigid frame with nonpowered traction accessories, such as cords, pulleys, or weights, and that is intended to apply a therapeutic pulling force to the skeletal system.
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Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
December 30, 2016
STL International, Inc. % Korina Akhondzadeh Regulatory Consultant to STL International, Inc. Kara & Associates 6965 El Camino Real Suite 105-428 Carlsbad, California 92009
Re: K162702
Trade/Device Name: Teeter Manual Inversion Table; Teeter Gravity Boots; Teeter Forward Rotation Decompression Device; Teeter Portable Decompression Device; Teeter Horizontal Decompression Table Regulation Number: 21 CFR 888.5850 Regulation Name: Nonpowered Orthopedic Traction Apparatus and Accessories Regulatory Class: Class I Product Code: HST Dated: December 02, 2016 Received: December 05, 2016
Dear Korina Akhondzadeh:
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. 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
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Part 807); labeling (21 CFR Part 801); medical device reporting (reporting of medical devicerelated 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 contact the Division of Industry and Consumer Education at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address
http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm. 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
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 Industry and Consumer Education at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address
http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm.
Sincerely.
# Michael J.Hoffmann -S
for Carlos L. Peña, PhD, MS Director Division of Neurological and Physical Medicine Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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## Indications for Use
510(k) Number (if known) K162702
Device Name
Teeter Manual Inversion Table;
Teeter Gravity Boots;
Teeter Forward Rotation Decompression Device; Teeter Portable Decompression Device; Teeter Horizontal Decompression Table
### Indications for Use (Describe)
Teeter Decompression Devices are multiple user, reusable devices for home use, intended to provide traction to the spine while stretching the para-spinal muscles and soft tissues. The devices provide non-powered traction and are meant for use by adults.
Use of the Teeter Decompression Devices is indicated for the following conditions: back pain, muscle tension, degenerative disc disease, spinal degenerative joint disease, spinal stenosis, herniated disc, spinal curvature due to tight muscles, sciatica, muscle spasm, and facet syndrome.
Type of Use (Select one or both, as applicable)Prescription Use (Part 21 CFR 801 Subpart D)
|X | Over-The-Counter Use (21 CFR 801 Subpart C)
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Image /page/3/Picture/0 description: The image shows the logo for Teeter. The logo consists of a stylized letter "T" above the word "TEETER" in a sans-serif font. The "T" is made up of three triangles in different shades of blue and gray. The word "TEETER" is in a gray color.
## 510(k) Summary — K162702
This 510(k) summary is being submitted in accordance with the requirements of 21 CFR 807.92.
| SUBMITTER | STL International, Inc.<br>9902 162nd Street, Court E<br>Puyallup, WA 98375<br>Tel: (253) 200-6119<br>Fax: (253) 840-5757 |
|------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Contact:<br>Email: | Rylie Teeter Leier, CEO<br>rylie@teeter.com |
| Official Correspondent | Korina A. Akhondzadeh<br>KARA & Associates (Regulatory Consultant to STL International, Inc.)<br>6965 El Camino Real, Suite 105-428<br>Carlsbad, CA 92009<br>Tel: 760-798-9642<br>Fax: 760-798-9643 |
| Email | korina@kara2a.com |
- Date Prepared: December 29, 2016
#### II. DEVICE
| Device Name: | Teeter Decompression Devices |
|----------------------|-----------------------------------------------------------|
| Common/Usual Name: | Apparatus, Traction, Non-Powered |
| Regulation: | 21 CFR 888.5850 |
| Classification Name: | Nonpowered Orthopedic Traction Apparatus and Accessories |
| Product Code: | HST |
| Class: | I |
#### lll. PREDICATE DEVICE
This predicate device has not been subject to a recall.
#### DEVICE DESCRIPTION IV.
Teeter's decompression devices are designed to decompress the spine and stretch paraspinal soft tissues. The devices are non-powered, external (non-invasive) and usercontrolled. Decompression is accomplished in various ways depending on the model within the Teeter product family.
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Image /page/4/Picture/0 description: The image shows the logo for the company Teeter. The logo consists of a stylized letter "T" above the word "TEETER" in a sans-serif font. The "T" is made up of three triangles, with the top triangle in teal, the middle triangle in gray, and the bottom triangle in light blue. The word "TEETER" is in gray.
version type devices, which are illustrated below, decompress the spinal region with the weight of the upper body, (angle only applies to the manual table, the others only offer full inversion – so variable loads are not an option)
Manual Inversion Table - Supporting the user at the ankles, the device enables the user to rotate into the inverted position and allows the user to maintain a relaxed state as their body weight combined with the downward force of gravity creates progressive traction, decompressing each joint by the same weight that compresses it while upright. The user is able to predetermine or stop at their chosen degree of rotation, allowing increasing stretching intensity as the angle of inversion advances.
Image /page/4/Picture/3 description: In the image, a woman is using an inversion table. The woman is upside down with her feet secured in the ankle clamps. The inversion table is made of metal and has a padded backrest. The woman is wearing a blue tank top and gray leggings.
Manual Inversion Table
Gravity Boots - Supporting the user at the ankles, the device enables the user to hang in the inverted position, keeping the user relaxed while their body weight combined with the downward force of gravity creates progressive traction, decompressing each joint by the same weight that compresses it while upright.
Image /page/4/Picture/6 description: In the image, a man is hanging upside down from an inversion table. The man is wearing a blue shirt and black shorts. He is smiling and looking at the camera. The inversion table is black and has blue padding around the ankles. The background is a white wall and a wooden door frame.
Gravity Boots
Forward Rotation Decompression Device - The user leans over a foam lap pad, supported at their upper thighs, to rotate forward on the device into an inverted position while bending the knees behind a roller for support. The lap pad and foam rollers provides a contact support, holding the user in the inverted position. The hips and knees
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Image /page/5/Picture/0 description: The image shows the logo for the company Teeter. The logo consists of a stylized letter "T" above the word "TEETER" in a bold, sans-serif font. The "T" is made up of two triangles, one in a darker shade of blue and the other in a lighter shade of blue.
90 degrees, placing the body in a position that flattens the lumbar curve, increasing muscle relaxation and decompression of the spine.
Image /page/5/Picture/2 description: In the image, a man is using an ab exercise machine. The man is positioned upside down with his legs secured by pads. He is holding onto handles for support. The machine is made of metal and has a padded seat.
Forward Rotation Decompression Device
The manual traction devices, which are illustrated below, apply decompression to the spinal region by applying force with the bilateral upper extremities on the device's handlebars while the user's legs are secure and stationary.
Portable Decompression Device - While seated on a flat surface, the user positions the device so the left and right thigh contacts align with upper-most thigh area and the foam roller contacts are behind the knees. The user reclines into the supine position, with knees and hips at 90°, flattening the lumbar curve to increase muscle relaxation and decompression of the lumbar spine once the device is utilized. The contacts provide leverage at the front and back of the thighs so that when the user pushes with their hands on the handles toward the feet, straightening their arms and applying selfcontrolled traction force to decompress the lumbar and mid-spine.
Image /page/5/Picture/6 description: In the image, a woman is lying on her back while using a piece of exercise equipment. Her legs are bent at the knees, and her feet are resting on a chair. The exercise equipment is positioned between her legs and is being held in place by her hands. The woman is wearing a light green tank top and black shorts. She is looking up at the ceiling.
Portable Decompression Device
Horizontal Decompression Device - Laying in the supine position with knees bent at 90°, with supports under the armpits and behind the knees, the user pushes with their hands on the handles toward the feet. This causes the device to separate at the mid-point, pushing against the knees to pull the lower body away from the head and deliver traction to the lumbar and mid-spine.
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Image /page/6/Picture/0 description: The image shows the logo for Teeter. The logo consists of the word "TEETER" in a bold, sans-serif font, with a stylized triangular shape above it. The triangular shape is divided into three sections, with the top section being a darker teal color, the middle section being gray, and the bottom section being a lighter teal color. The word "TEETER" is in a gray color.
Image /page/6/Picture/1 description: The image shows a blue and black Teeter FreeStep recumbent cross trainer. The machine has a padded seat and foot platforms. The machine is designed to provide a low-impact workout.
Horizontal Depression Table
All Teeter Decompression Devices are made of rigid, powder coated steel, plastic and foam, requiring little or no regular maintenance and allowing for easy product care. The devices allow the user to apply traction and control the force without use of mechanical weights, pulleys or weights.
#### V. INDICATIONS FOR USE
Teeter Decompression Devices are multiple user, reusable devices for home use, intended to provide traction to the spine while stretching the para-spinal muscles and soft tissues. The devices provide non-powered traction and are meant for use by adults.
Use of the Teeter Decompression Devices is indicated for the following conditions: back pain, muscle tension, degenerative disc disease, spinal degenerative joint disease, spinal stenosis, herniated disc, spinal curvature due to tight muscles, sciatica, muscle spasm, and facet syndrome. Type of Use: Over-the-Counter Use
## COMPARISON OF TECHNOLOGICAL CHARACTERISTICS WITH THE VI. PREDICATE DEVICE
Both the Teeter Decompression Devices and the predicate Lo-Bak TRAX are non-powered traction devices used to provide traction to the lumbar spine while stretching the para-spinal muscle and soft tissues. Refer to the following table for comparison of the technological characteristics with the Teeter Decompression Devices and the predicate.
| Characteristic | Teeter Decompression Devices | | | | | |
|----------------------------------------|----------------------------------|-------------------------------------|------------------------------------------------|----------------------------------------------|-----------------------------------|------------------------------------------|
| | Manual<br>Inversion<br>Table | Gavity<br>Boots | Forward<br>Rotation<br>Decompression<br>Device | Portable<br>Decompression<br>Device | Horizontal<br>Depression<br>Table | Lo-Bak<br>TRAX<br>(Predicate)<br>K110858 |
| Traction Type | Non-<br>Power | Non-<br>Power | Non-Power | Non-Power | Non-Power | Non-Power |
| Product Type | Inversion | Inversion | Inversion | Manual | Manual | Manual |
| Treatment<br>Position | Inverted at<br>various<br>angles | Inverted<br>at<br>various<br>angles | Inverted at<br>various angles | Supine | Supine | Supine |
| Method of<br>generating<br>decompress- | Gravity<br>and<br>weight of | Gravity<br>and<br>weight of | Gravity and<br>weight of upper<br>body | Upper bilateral<br>extremities with<br>lower | Upper<br>bilateral<br>extremities | Upper<br>bilateral<br>extremities |
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Image /page/7/Picture/0 description: The image shows the logo for the company "TEETER". The logo consists of a stylized letter "T" above the company name. The "T" is formed by two triangles, one in a dark teal color and the other in gray. The company name "TEETER" is written in a bold, sans-serif font in a dark color.
| Characteristic | Teeter Decompression Devices | | | | | |
|----------------------------|-----------------------------------------------------------------------------------|-----------------------------------------------------------------------------------|-----------------------------------------------------------------------------|-------------------------------------------------|-------------------------------------------------------|-------------------------------------------------------|
| | Manual<br>Inversion<br>Table | Gavity<br>Boots | Forward<br>Rotation<br>Decompression<br>Device | Portable<br>Decompression<br>Device | Horizontal<br>Depression<br>Table | Lo-Bak<br>TRAX<br>(Predicate)<br>K110858 |
| sion force | upper<br>body | upper<br>body | | extremities<br>secure and<br>stationary | with lower<br>extremities<br>secure and<br>stationary | with lower<br>extremities<br>secure and<br>stationary |
| Amount of<br>force applied | Variable -<br>Based on<br>upper<br>body<br>weight<br>and angle<br>of<br>inversion | Variable<br>- Based<br>on upper<br>body<br>weight<br>and<br>angle of<br>inversion | Variable -<br>Based on<br>upper body<br>weight and<br>angle of<br>inversion | Variable -<br>Based on force<br>exerted by user | Variable -<br>Based on<br>force<br>exerted by<br>user | Variable -<br>Based on<br>force<br>exerted by<br>user |
| Frame<br>construction | Powder-<br>coated<br>steel | Powder-<br>coated<br>steel | Powder-coated<br>steel | Powder-coated<br>steel | Powder-<br>coated<br>steel | Powder-<br>coated<br>steel |
| Height Range | 56-78" | None | 56-78" | None | 78" | None |
| Weight Limit | 300 lb. | 250 lb. | 300 lb. | None | 300 lb. | None |
## VII. SAFETY AND EFFECTIVNESS
The manual traction Teeter Decompression Devices have treatment position and generating the decompression forces in the same method. The difference in treatment position and the method of generating the decompression forces in the inversion type Teeter Decompression Devices does not affect the effectiveness and safety as it relates to the predicate device. Inversion decompression devices have been in use since the 1960's and are a commonly accepted form of traction. However, it is important for the users to read the "Instructions of Use" document to ensure that specified requirements (e.g., weight, height) are met.
The amount of decompression force that is applied to the user is controlled by the user.
## VII. PERFORMANCE DATA
The following evaluations were conducted on the Teeter Decompression Devices:
- Safety evaluations (Inversion table and gravity boots only) ●
- . Risk analysis
## VIX. CONCLUSIONS
Based on the information submitted in the 510(k) application, Teeter Decompression Devices are as safe and effective as the legally marketed device (i.e., Lo-Bak TRAX) device.
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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.
Use the checkboxes above the results to narrow: SaMD keeps only software-only devices, AI / ML keeps only devices with AI.
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?
Narrow by SaMD (software-only devices), then narrow by AI/ML (devices with AI).
2. The results table
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.
4. Device detail page: chat and citations
Click a device name to open its detail page: device facts on the left, a chat window on the right. Ask something like "Describe the training data". The answer carries little citation bubbles — click one to jump to the highlighted passage in the source PDF, so you can verify every AI answer against the document. There's also a Download PDF button for sharing.
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Reading rule for every project: how many summaries do you read in full?
At least the three most relevant 510(k) or De Novo summaries, in full. After that, use targeted chat questions to confirm your memory quickly. The tool supports this professional habit — it doesn't replace it.
5. Side-by-side comparison
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.
What does the side-by-side PDF viewer mode do?
Select multiple devices, open the PDF viewer tab, and ask one question (e.g., "Describe the training data"). It queries all selected devices simultaneously with citations, so you can compare and contrast quickly.
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With rows selected, go to the Collections tab and create a labeled collection (e.g., "Cobb Angle Project"). Reload that selection any time — before a client call, pull up the collection and ask questions across all of its devices at once.
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What can you do from the regulations tree view?
Browse product codes and regulation numbers, read the identification text and special controls, browse sibling product codes, open device PDFs on the right, and search by product code or regulation number at the top of the tree.
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Click Show Chart and segment by regulation number (or product code) to see which regulations dominate your result set. Clicking a regulation takes you into the regulations tree. Great for spotting that most matches are, say, hardware laparoscopic devices — a cue to go back and filter.
How do you see which regulations dominate a search result set?
Click "Show Chart" and segment by Regulation Number. Clicking a regulation takes you to the regulations tree.
9. The predicate graph
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.
In the predicate graph, why are commonly predicated devices worth reading?
A lot of people predicated them for a reason. Clicking a node traces parents and children, and selections from search carry over pre-selected.
10. Embeddings: the galaxy map
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.