Sterile Saline Solution is indicated for rinsing and wetting of soft (hydrophilic) contact lenses.
Device Story
Sterile Saline Solution is a preservative-free, buffered, isotonic, aqueous solution containing sodium chloride, sodium borate, and boric acid. It is supplied in single-use twist-open pods or reusable bottles with dropper tips. The device is intended for use by contact lens wearers to rinse and wet soft (hydrophilic) contact lenses. The solution provides a sterile environment for lens maintenance. Safety is established through non-toxicity and bacteriostasis testing, ensuring no significant growth of common pathogens (e.g., S. aureus, E. coli, P. aeruginosa) in reclosable containers over a 30-day period.
Clinical Evidence
Bench testing only. Studies included cytotoxicity and eye irritation testing, demonstrating no evidence of toxicity. Bacteriostasis testing conducted per Micro Appendix C of FDA guidance confirmed that S. aureus, E. coli, P. aeruginosa, C. albicans, and A. niger do not exhibit significant growth in the solution over a 30-day period.
Technological Characteristics
Aqueous solution containing sodium chloride, sodium borate, and boric acid. Preservative-free. Buffered and isotonic. Packaging includes plastic single-use pods and reusable bottles with tamper-resistant caps. Sterilization method not explicitly stated, but product is labeled sterile.
Indications for Use
Indicated for rinsing and wetting of soft (hydrophilic) contact lenses.
Regulatory Classification
Identification
A soft (hydrophilic) contact lens care product is a device intended for use in the cleaning, rinsing, disinfecting, lubricating/rewetting, or storing of a soft (hydrophilic) contact lens. This includes all solutions and tablets used together with soft (hydrophilic) contact lenses and heat disinfecting units intended to disinfect a soft (hydrophilic) contact lens by means of heat.
Special Controls
*Classification.* Class II (Special Controls) Guidance Document: “Guidance for Industry Premarket Notification (510(k)) Guidance Document for Contact Lens Care Products.”
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Cachet Pharmaceuticals Pvt. Ltd. Sterile Saline Solution Premarket Submission 510 (K)
## 510(K) SUMMARY FOR Sterile Saline Solution
SEP 1 0 2010
This summary is provided in accordance with the Safe Medical Devices Act (SMDA) of 1990. The information provided in the 510 (K), Premarket Notification, was in accordance with 21 CFR 807.87
#### Submitter of 510 (K) 1.
, చా.,
Cachet Pharmaceuticals Pvt. Ltd. 415 Shah Nahar, Worli Mumbai 400 018 India
Contact Person : Mr. Shivkumar Agrawal Telephone No. : 91-22-4082-9999 or 2496-5831 91-22-2497-3691 Fax: E.mail: skagrawal@cachetindia.com
Contact Person (United States): Telephone No. : E mail :
Mr. Haribabu Talasila 732-447-4353 htalasila@chemtexinternational.com.
- 2. Product Code: LPN
- 3. Device Name Classification Name: Proprietary Name:
Soft (hydrophilic) Contact Lens Solution Sterile Saline Solution
- Legally Marketed Predicate Devices 4. Purilens Saline Solution - K002319 Lens Plus Rewetting Drops - K042562 Unisol -P7900 11
{1}------------------------------------------------
## Cachet Pharmaceuticals Pvt. Ltd. Sterile Saline Solution Premarket Submission 510 (K)
#### 5. Description of the Device
ri
Sterile Saline Solution is a sterile, preservative free, buffered, isotonic, clear, colourless aqueous solution containing Sodium Chloride, Sodium Borate and Boric Acid.
The solution is packaged in plastic sterile single use twist open pods, reusable bottles with dropper tips and caps. Each bottle is closed with tamper resistant cap with a breakable ring, which must be broken in order to open the bottle.
#### 6. Indications for Use
Sterile Saline Solution is indicated for rinsing & wetting of soft (hydrophilic) contact lenses.
#### 7. Description of Safety and Substantial Equivalence:
A series of studies were completed to demonstrate the substantial equivalence of Sterile Saline Solution to the predicate device(s). All testing was conducted in accordance with and in conformance to applicable device regulations. Results demonstrate the solution is non-toxic and is comparable to other currently marketed soft contact lens solutions. Results from all tests demonstrate the substantial equivalence to previously approved predicate device(s).
Sterile Saline Solution is substantially equivalent in terms of its actions and indications for use, to Purilens Saline Solution -K002319, Lens Plus Rewetting Drops -K042562. Unisol- P790011 cleared for marketing under 510(K). Sterile Saline Solution meets the guideline set forth in FDA's May 1, 1997 Guidance for Industry, Premarket Notification 510 (K) Guidance Document for Contact Lens Care products.
### Toxicity:
A series of cytotoxicity and eve irritation studies of the Sterile Solution were undertaken. In these studies, there was no evidence of toxicity.
#### BacteriostasisT est:
A bacteriostasis study was conducted in accordance with Micro Appendix C of the Premarket Notification 510 (K) Guidance Document for Contact Lens Care Products. The purpose of the study is to evaluate the ability of bacteria to survive in the reclosable containers containing Sterile Saline Solution (unpreserved borate buffered saline). The results show that Staphylococcus aureous, Escherichia coli, Pseudomonas aeruginosa, Candida albicans and Aspergillus niger have no significant growth and survive over the designed period. The data support the desire discard statement on label up to 30 days.
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## Cachet Pharmaceuticals Pvt. Ltd. Sterile Saline Solution Premarket Submission 510 (K)
#### 8. Substantial Equivalence
The data provide in this 510 (K) submission concludes that Sterile Saline Solution is substantially equivalent to currently cleared Purilens Saline Solution -K002319, Lens Plus Rewetting Drops -K042562, Unisol- P790011 cleared for marketing under 510 (K) for rinsing and wetting of soft (hydrophilic) contact lenses.
| Substantial<br>Equivalency | Sterile Saline<br>Solution | Purilens<br>Saline<br>Solution<br>K002319 | Lens Plus<br>Rewetting Drops<br>K042562 | Unisol<br>P790011 |
|------------------------------------------|----------------------------------------------------------------------|-------------------------------------------------------------------|--------------------------------------------------------|-----------------------------------------------------------------------------------------------------|
| Manufacturer | Marck Bioscicence<br>Ltd. | Purilens Inc. | Advanced<br>Medical Optics | Alcon Research<br>Ltd. |
| Intended use<br>(Indications for<br>use) | For rinsing and<br>wetting of soft<br>(hydrophilic)contact<br>lenses | For cleaning,<br>disinfecting<br>and storing of<br>contact lenses | For moistening<br>and dehydrating<br>of contact lenses | For heat disinfecting<br>rinsing, storage and<br>wetting of soft<br>(hydrophilic) contact<br>lenses |
| Formulation | Sodium chloride,<br>Sodium borate, Boric<br>acid | Sodium<br>chloride, Boric<br>acid | Sodium chloride,<br>Boric acid | Sodium chloride,<br>Sodium borate,<br>Boric acid |
| Preservative | No | No | No | No |
| Sterility claim | Sterile | Sterile | Sterile | Sterile |
## SUBSTANTIAL EQUIVALENCE CHART
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Image /page/3/Picture/1 description: The image shows the seal of the Department of Health & Human Services - USA. The seal is circular and contains the department's emblem in the center. The emblem is a stylized representation of an eagle with its wings spread, symbolizing protection and service. The text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" is arranged around the perimeter of the circle.
Food and Drug Administration 10903 New Hampshire Avenue Document Control Room -WO66-G609 Silver Spring, MD 20993-0002
Cachet Pharmaceuticals Pvt., Ltd. c/o Mr. Shivkumar Agrawal 415 Shah Nahar. Worli Mumbai, India 400 018
SEP 1 0 2010
Re: K093367
Trade Name: Sterile Saline Solution Regulation Number: 21 CFR 886.5928 Regulation Name: Soft (hydrophilic) contact lens care products Regulatory Class: Class II Product Code: LPN Dated: September 10, 2010 Received: September 10, 2010
#### Dear Mr. Agrawal:
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 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.
{4}------------------------------------------------
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/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/ResourcesforYou/Industry/default.htm.
Sincerely yours,
Signature
Malvina B. Eydelman M.D. Director Division of Ophthalmic, Neurological and Ear, Nose and Throat Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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K093367
# Indications for Use
## 510(k) Number (if known): K093367
SEP 1 0 2010
Device Name: Sterile Saline Solution
· Indications For Use:
Sterile Saline Solution is indicated for rinsing and wetting of soft (hydrophilic) contact lenses.
Prescription Use (Part 21 CFR 801 Subpart D) AND/OR
Over-The-Counter Use _ (Part 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)
Duise Haufe, ph.D.
(Division Sign-Off) Division of Ophthalmic, Neurological and Ear, Nose and Throat Devices
510(k) Number K093367
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Learn the FDA Browser
Two short videos show you everything — or skip straight to the written tutorial if you'd rather read. You can reopen this any time from the Tutorial button in the top bar.
Part 1 — Search, results, and everyday workflows 16 min
Part 2 — Embeddings: the galaxy map 3 min
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.
Where do you find a device's intended use without opening the PDF?
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.
How do you verify an AI chat answer on the device detail page?
Click the citation bubbles to jump to the relevant highlight in the source document.
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.
6. Collections
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.
How do you save a set of selected devices for later use?
Select the rows, go to the Collections tab, and create a labeled collection (e.g., "Cobb Angle Project"). You can reload the selection anytime and carry it into the PDF viewer and other tabs that support selections.
7. Product codes and the regulations tree
Click a product code in the results to jump to it in the regulations tree — identification text, sibling product codes, and devices you can open in a PDF viewer on the right. Click a regulation number to see its identification, special controls, and related product codes. You can also search by product code or regulation number at the top of the tree. Always read the special controls if any exist for your device — it broadens your search and sharpens pre-kickoff research.
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.
8. Chart view
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.