K993330 · Hemocleanse, Inc. · MLW · Dec 30, 1999 · Gastroenterology, Urology
Device Facts
Record ID
K993330
Device Name
THERMOCHEM-HT SYSTEM
Applicant
Hemocleanse, Inc.
Product Code
MLW · Gastroenterology, Urology
Decision Date
Dec 30, 1999
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 876.5630
Device Class
Class 2
Attributes
Therapeutic
Indications for Use
The intended use of the ThermoChem-HT System is to raise the core temperature of the peritoneum to the desired targeted temperature by continuously lavaging the peritoneum with circulating warmed Lactated Ringer's Solution, U.S.P., or another physiologically compatible sterile solution.
Device Story
ThermoChem-HT System circulates warmed Lactated Ringer's solution through peritoneal cavity for hyperthermia therapy. System components: internal water heater/cooler, roller-type fluid pump, disposable circuit (heat exchanger, fluid reservoir, tubing). User places inlet/outlet catheters in patient peritoneum. Fluid gravity drains from outlet to reservoir, passes through roller pump to heat exchanger, then returns to patient. System monitors fluid temperature; touch screen interface guides user through setup/operation; computer stores records. Used in clinical settings by healthcare providers. Benefits patient by achieving targeted peritoneal temperature via continuous lavage.
Clinical Evidence
No clinical trials conducted by the manufacturer. Safety of the recommended temperature for the intended use was supported by published clinical studies involving intra-peritoneal perfusion hyperthermia. Performance, biocompatibility, electrical safety, and electromagnetic compatibility were established based on the use of legally marketed components from cardiopulmonary bypass and peritoneal dialysis systems.
Technological Characteristics
System includes internal water heater/cooler, roller-type fluid pump, and disposable circuit with integrated heat exchanger, fluid reservoir, and tubing. Features touch screen interface and computer record storage. Operates by circulating sterile solutions (e.g., Lactated Ringer's) through a closed-loop system with temperature regulation. Software provides user guidance and data logging.
Indications for Use
Indicated for patients requiring peritoneal lavage with warmed sterile solutions to raise core peritoneal temperature. Prescription use only.
Regulatory Classification
Identification
(1) A peritoneal dialysis system and accessories is a device that is used as an artificial kidney system for the treatment of patients with renal failure or toxemic conditions, and that consists of a peritoneal access device, an administration set for peritoneal dialysis, a source of dialysate, and, in some cases, a water purification mechanism. After the dialysate is instilled into the patient's peritoneal cavity, it is allowed to dwell there so that undesirable substances from the patient's blood pass through the lining membrane of the peritoneal cavity into this dialysate. These substances are then removed when the dialysate is drained from the patient. The peritoneal dialysis system may regulate and monitor the dialysate temperature, volume, and delivery rate together with the time course of each cycle of filling, dwell time, and draining of the peritoneal cavity or manual controls may be used. This generic device includes the semiautomatic and the automatic peritoneal delivery system.(2) The peritoneal access device is a flexible tube that is implanted through the abdominal wall into the peritoneal cavity and that may have attached cuffs to provide anchoring and a skin seal. The device is either a single use peritioneal catheter, intended to remain in the peritoneal cavity for less than 30 days, or a long term peritoneal catheter. Accessories include stylets and trocars to aid in the insertion of the catheter and an obturator to maintain the patency of the surgical fistula in the abdominal wall between treatments. (3) The disposable administration set for peritoneal dialysis consists of tubing, an optional reservoir bag, and appropriate connectors. It may include a peritoneal dialysate filter to trap and remove contaminating particles. (4) The source of dialysate may be sterile prepackaged dialysate (for semiautomatic peritoneal dialysate delivery systems or “cycler systems”) or dialysate prepared from dialysate concentrate and sterile purified water (for automatic peritoneal dialysate delivery systems or “reverse osmosis” systems). Prepackaged dialysate intended for use with either of the peritoneal dialysate delivery systems is regulated by FDA as a drug.
Special Controls
*Classification.* Class II (special controls). The following accessories are exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to the limitations in § 876.9: A catheter finger grip that is non-patient contacting and intended for single use with a peritoneal catheter; a continuous ambulatory peritoneal dialysis (CAPD) belt; and a catheter stand that does not include weigh scales.
Submission Summary (Full Text)
{0}------------------------------------------------
DEC 3 0 1999
993330
# Section 2: 510(k) Summary
General Information
Submitter Name and Address:
HemoCleanse, Inc. 2700 Kent Avenue West Lafayette, IN 47906
Contact: Stephen R. Ash. MD. FACP Chairman, Director of R&D (765) 463-9540
510(k) Summary Preparation Date: September 30, 1999
Device Trade Name: ThermoChem-HT System
Device Common Name: Thermal Infusion Fluid Warmer (80LGZ)
Device Classification Name: Unclassified
#### Predicate Devices
The ThermoChem-HT System incorporates the following components used in legally marketed cardiopulmonary bypass systems and peritoneal dialysis systems to circulate warmed fluids: internal water heater/cooler, a roller-type fluid pump, inputs for monitoring temperature, and a disposable circuit with an integral heat exchanger, fluid reservoir, and tubing connectors. The system also includes computer record storage and a touch screen that directs the user through setup and use.
#### Device Description
The principal components, features and functions of the ThermoChem-HT System include an internal water heater/cooler, roller-type fluid pump, inputs for monitoring temperature, touch screen to direct the user through set-up and use, computer record storage, and disposable circuit that includes an integrated heat exchanger, fluid reservoir, and tubing connectors. The user provides and places commercially available introduction and drainage catheters into the patient's peritoneal cavity. One catheter acts as an Inlet and the other as an Outlet. The user also provides the Lactated Ringer's Solution. U.S.P., or another physiologically compatible sterile solution that is circulated into and out of the peritoneal cavity.
(continued)
{1}------------------------------------------------
## Page 2: 510(k) Summary for ThermoChem-HTTM System
The system heats Lactated Ringer's Solution, U.S.P., or another physiologically compatible sterile solution, and circulates it into and out of the peritoneal cavity. Flow from the patient Outlet Catheter gravity drains into a fluid reservoir, then through to a roller Pump and then to an inline, disposable Heat Exchanger. The Heat Exchanger is interfaced with heated water from a heater/cooler that provides regulated temperature control to the Heat Exchanger. The heated solution then passes to the peritoneal cavity through the Inlet Catheter. The inline reservoir also aids in priming the disposable circuit and maintaining adequate fluid volumes. The system monitors the temperature of the circulating Lactated Ringer's Solution, U.S.P., or another physiologically compatible sterile solution.
## Intended Use
The intended use of the ThermoChem-HT System is to raise the core temperature of the peritoneum to the desired targeted temperature by continuously lavaging the peritoneum with circulating warmed Lactated Ringer's Solution, U.S.P., or another physiologically compatible sterile solution.
## Laboratory/Clinical Tests
The major components of the ThermoChem-HT™ System are legally marketed devices used in either cardiopulmonary bypass systems or peritoneal dialysis systems to circulate warmed fluids. The manufacturers' 510(k) submissions have established the perform-ance, biocompatability, electrical safety, and electromagnetic compatability, as appro-priate, for these components, HemoCleanse, Inc. also provided similar information for the ThemoChem-HT™ System . In addition, HemoCleanse, Inc. provided software verification and validation information and published clinical studies involving intra-peritoneal perfusion hyperthermia that demonstrated the safety of the recommended temperature for the intended use of the ThermoChem-HTTM System.
#### Conclusions
The ThermoChem-HT™ System is substantially equivalent to legally marketed devices intended to circulate warmed fluids through the peritoneal cavity.
{2}------------------------------------------------
Image /page/2/Picture/1 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo consists of a stylized depiction of an eagle or bird-like figure with three curved lines representing its wings or body. The logo is encircled by the text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" in a circular arrangement.
Public Health Service
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
DEC 3 0 1999
Stephen R. Ash, M.D., FACP Chairman, Director of R&D HemoCleanse, Inc. 2700 Kent Avenue West Lafayette, IN 47906
RE:
K993330 ThermoChem-HT System Thermal Infusion Fluid Warmer Dated: November 2, 1999 Received: November 3, 1999 Regulatory Class: II 21 CFR 876.5630/Procode: 78 MLW
Dear Dr. Ash:
We have reviewed your Section 510(k) notification of intent to market the device referenced above and we 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). 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 III (Premarket Approval), 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 895. A substantially equivalent determination assumes compliance with the Current Good Manufacturing Practice requirements, as set forth in the Quality System Regulation (QS) for Medical Devices: General regulation (21 CFR Part 820) and that, through periodic QS inspections, the Food and Drug Administration (FDA) will verify such assumptions. Failure to comply with the GMP regulation may result in regulatory action. In addition, FDA may publish further announcements concerning your device in the Federal Register. Please note: this response to your premarket notification submission does not affect any obligation you might have under sections 531 through 542 of the Act for devices under the Electronic Product Radiation Control provisions, or other Federal laws or regulations.
This letter will allow you to begin marketing your device as described in your 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 and additionally 809.10 for in vitro diagnostic devices), please contact the Office of Compliance at (301) 594-4613. 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"(21 CFR 807.97). Other general information on your responsibilities under the Act may be obtained from the Division of Small Manufacturers 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 yours,
CAPT Daniel G. Schultz, M.D. Acting Director, Division of Reproductive, Abdominal, Ear, Nose and Throat, and Radiological Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
ﺴﺮ
{3}------------------------------------------------
510(k) Number (if known): ____________________________________________________________________________________________________________________________________________________
Device Name:_________ ThermoChem-HT
Indications For Use:
The intended use of the ThermoChem-HT System is to raise the core temperature of the peritoneum to the desired target temperature by continuously lavaging the peritoneum with circulating warmed Lactated Ringers's Solution, U.S.P., or another physiologically compatible sterile solution.
(PLEASE DO NOT WRITE BELOW THIS LINE - CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
(Division Sign-Off) Division of Reproductive, Abdominal, ENT, and Radiological Deyices 49 3330 510(k) Number
Prescription Use (Per 21 CFR 801.109)
OR
Over-The-Counter Use
- -
(Optional Format 1-2-96)
Predicate graph will load when search results are available.
Embedding visualization will load when search results are available.
PDF viewer will load when search results are available.
Loading panels...
Select an item from Submissions
Click any panel, subpart, regulation, product code, or device to see details here.
Section Matches
Results will appear here.
Product Code Matches
Results will appear here.
Special Control Matches
Results will appear here.
Loading collections...
Loading
My Alerts
You will receive email notifications based on the filters and frequency you set for each alert.
Sort by:
Create Alert
Search Filters
Agent Token
Create a read-only bearer token for Claude, ChatGPT, or other agents that can call HTTP APIs.
Copy this now. It will not be shown again.
Connected apps
Apps you authorized through browser sign-in. Disconnecting revokes their access immediately.
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.