K050332 · Mast Biosurgery USA, Inc. · FTL · May 27, 2005 · General, Plastic Surgery
Device Facts
Record ID
K050332
Device Name
SURGI-WRAP MAST BIORESORBABLE SHEET
Applicant
Mast Biosurgery USA, Inc.
Product Code
FTL · General, Plastic Surgery
Decision Date
May 27, 2005
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 878.3300
Device Class
Class 2
Attributes
Therapeutic
Indications for Use
The Surgi-Wrap MAST Bioresorbable Sheet is to be used wherever temporary wound support is required, to reinforce soft tissues where weakness exists in the urological, gynecological or gastroenterological anatomy, or for the repair of hernia or other fascial defects that require the addition of a reinforcing or bridging material to obtain the desired surgical result. This includes, but is not limited to the following procedures: pubourethral support and bladder support, urethral and vaginal prolapse repair, colon and rectal prolapse, repair, reconstruction of the pelvic floor and sacral colospension. The resorbable Protective Film minimizes tissue attachment to the device in case of direct contact with the viscera. The device is indicated for open and laparoscopic procedures. Laparoscopic procedures are limited to sizes from 0.02mm - 0.2mm in thickness.
Device Story
Resorbable polylactic acid (PLA) sheet; used for soft tissue reinforcement and hernia repair. Surgeon cuts sheet to desired shape/size; heated to ~55°C in sterile water for 3D anatomical contouring. Implanted during open or laparoscopic surgery; may be fixated with resorbable sutures. Provides temporary wound support; minimizes tissue attachment to viscera via resorbable film. Benefits patient by reinforcing weakened tissue while resorbing over time.
Clinical Evidence
Animal studies conducted to demonstrate safety and efficacy. Bench testing included inherent viscosity stability after heating at 60°C for 120 minutes and mechanical strength testing to confirm suitability for indications. No human clinical trial data provided.
Technological Characteristics
Material: Polylactic acid (PLA). Form: Resorbable semi-rigid sheet. Dimensions: 25mm x 25mm to 500mm x 500mm; 0.02mm to 1.0mm thickness. Principle: Malleable when heated to ~55°C for 3D contouring. Mechanical: Cuttable by end-user; fixated via sutures. Sterilization: Not specified.
Indications for Use
Indicated for patients requiring temporary soft tissue reinforcement or hernia/fascial defect repair in urological, gynecological, or gastroenterological anatomy. Applicable for pubourethral/bladder support, urethral/vaginal prolapse repair, colon/rectal prolapse repair, pelvic floor reconstruction, and sacral colposuspension. Indicated for open and laparoscopic procedures (laparoscopic limited to 0.02mm-0.2mm thickness).
Regulatory Classification
Identification
Surgical mesh is a metallic or polymeric screen intended to be implanted to reinforce soft tissue or bone where weakness exists. Examples of surgical mesh are metallic and polymeric mesh for hernia repair, and acetabular and cement restrictor mesh used during orthopedic surgery.
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#### Surgi-Wrap MAST Bioresorbable Sheet 510(k) Summary
### Page 1 of 3
# ADMINISTRATIVE INFORMATION
# MAY 2 7 2005
| Manufacturer Name: | MAST Biosurgery, Inc.<br>6749 Top Gun Street, Suite C<br>San Diego, CA 92121 |
|--------------------|------------------------------------------------------------------------------|
| Official Contact: | Kenneth K. Kleinhenz<br>Regulatory Affairs |
DEVICE NAME
Classification Name:
Trade/Proprietary Name:
Surgical Mesh, Polymeric
Telephone (858) 458-0900 Fax (858) 458-0994
Surgi-Wrap MAST Bioresorbable Sheet
# ESTABLISHMENT REGISTRATION NUMBER 3004661493
# DEVICE CLASSIFICATION AND PRODUCT CODE
As shown in 21CFR 878.3300. Surgical Mesh are polymeric screens intended to be implanted to reinforce soft tissues. These devices are classified as Class II. Surgical Mesh have been assigned Product Code FTL.
### INTENDED USE
The Surgi-Wrap MAST Bioresorbable Sheet is to be used wherever temporary wound support is required, to reinforce soft tissues where weakness exists in the urological, gynecological or gastroenterological anatomy, or for the repair of hernia or other fascial defects that require the addition of a reinforcing or bridging material to obtain the desired surgical result. This includes, but is not limited to the following procedures: pubourethral support and bladder support, urethral and vaginal prolapse repair, colon and rectal prolapse, repair, reconstruction of the pelvic floor and sacral colposuspension. The resorbable Protective Film minimizes tissue attachment to the device in case of direct contact with the viscera. The device is indicated for open and laparoscopic procedures. Laparoscopic procedures are limited to sizes from 0.02mm - 0.2mm in thickness.
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# DEVICE DESCRIPTION
### Design Characteristics
MAST Biosurgery Surgi-Wrap MAST Bioresorbable Sheet is a resorbable implant in sheet form manufactured from polylactic acid (PLA). The Surgi-Wrap MAST Bioresorbable Sheet can be cut with scissors to the desired shape and size. The Surgi-Wrap MAST Bioresorbable Sheet Sheet is fully malleable when heated to approximately 55℃ (for example, by the use of sterile hot water), and thus can be conformed three dimensionally to most any anatomical orientation. The Surgi-Wrap MAST Bioresorbable Sheet can be used either alone or in conjunction with soft tissue fixation devices such as resorbable sutures, which can also serve to fixate the Surgi-Wrap MAST Bioresorbable Sheet and prevent dislocation. The Surgi-Wrap MAST Bioresorbable Sheet may be used in conjunction with various MAST Biosurgery Class I manual instruments (forceps, scissors, clamps, etc.).
The MAST Biosurgery Surgi-Wrap MAST Bioresorbable Sheet is provided in various shapes such as rectangles, ovals, and circles and will be provided in other shapes and sizes as needed for particular surgical procedures. The MAST Biosurgery Surgi-Wrap MAST Bioresorbable Sheet is provided in sheets of 25mm x 25mm to 500mm x 500mm and will be provided in other shapes and sizes as needed for particular surgical procedures. The thickness of the MAST Biosurgery Surgi-Wrap MAST Bioresorbable Sheet ranges from 0.02 mm to 1.0 mm according to the region to be treated. The MAST Biosurgery Surgi-Wrap MAST Bioresorbable Sheet is provided in solid sheets. The borders of the sheets may be aligned with holes to attach suture material.
### Material Composition
The MAST Biosurgery Surgi-Wrap MAST Bioresorbable Sheet is fabricated from polylactic acid (PLA).
### In Vitro Testing
The MAST Biosurgery Surgi-Wrap MAST Bioresorbable Sheet is intended to be heated in the surgical suite to temperatures above the material's glass transition temperature to facilitate shaping to anatomic structures. Therefore, testing was performed to determine the effect of prolonged heating in saline at 60℃ on inherent viscosity. The testing demonstrates that viscosity staved within an appropriate range over 120 minutes. The relatively brief exposure anticipated during the surgical preparation of MAST Biosurgery Surgi-Wrap MAST Bioresorbable Sheet is not expected to have a significant effect on its mechanical properties.
Aging testing was performed on MAST Biosurgery Surgi-Wrap MAST Bioresorbable Sheet. Testing demonstrated that the MAST Biosurgery Surgi-Wrap MAST Bioresorbable Sheet is strong enough for the indications for use.
Mechanical testing was performed on the MAST Biosurgery Surgi-Wrap MAST Bioresorbable Sheet which determined the MAST Biosurgery Surgi-Wrap MAST Bioresorbable Sheet to be substantially equivalent to the mechanical strengths of the predicate devices under indication for use conditions.
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#### 510(k) Summary Surgi-Wrap MAST Bioresorbable Sheet
# In Vivo Testing
Animal studies were conducted to demonstrate safety and efficacy of the MAST Biosurgery Surgi-Wrap MAST Bioresorbable Sheet material. The animal studies demonstrated that the MAST Biosurgery Surgi-Wrap MAST Bioresorbable Sheet materials are safe and efficacious for the indications for use.
# EQUIVALENCE TO MARKETED PRODUCT
The MAST Biosurgery SurgiWrap MAST Bioresorbable Shares indications and design principles with the following predicate devices which have been determined by FDA to be substantially equivalent to pre-amendment devices: MacroPore Surgi-Wrap MAST Bioresorbable Sheet, MacroPore SurgiWrap (TS), GFE Medizintechnik TiMESH, and the InjecTx Biosling; Class II medical devices that were cleared for marketing in the United States under K031955, K012025, K031225, and K010533 respectively.
# Indications For Use
The MAST Biosurgery Surgi-Wrap MAST Bioresorbable Sheet shares identical indications for use principles with the predicate devices as the MAST Biosurgery Surgi-Wrap MAST Bioresorbable Sheet and the predicate devices are indicated for the same surgical procedures.
## Design and Materials
The physical designs of MAST Biosurgery Surgi-Wrap MAST Bioresorbable Sheet and the predicate devices (MacroPore Surgi-Wrap MAST Bioresorbable Sheet, MacroPore SurgiWrap (TS), and the InjecTx Biosling) are substantially equivalent, consisting of thin semi-rigid sheets that are fabricated from resorbable materials. The MAST Biosurgery Surgi-Wrap MAST Bioresorbable Sheet and the MacroPore Surgi-Wrap MAST Bioresorbable Sheet and MacroPore Surgi-Wrap (TS) predicate device are identical in fit, form, and function as all devices are manufactured with the same process and fabricated from the identical raw material. The MAST Biosurgery Surgi-Wrap MAST Bioresorbable Sheet and the predicates also share design features of allowing for contouring. The MAST Biosurgery Surgi-Wrap MAST Bioresorbable Sheet and the MacroPore SurgiWrap predicates are fully contourable when heated to approximately 55°C. The thickness, shapes, and sizes of the MacroPore SurgiWrap predicates and the MAST Biosurgery Surgi-Wrap MAST Bioresorbable Sheet are substantially equivalent as they are identical ranging in sizes from 25mm x 25mm to 500mm with thickness ranges from 0.02mm to 1.0mm. The dimensions of the GFE Medizintechnik TiMESH predicate devices are also comparable to the MAST Biosurgery Surgi-Wrap MAST Bioresorbable Sheet as both devices are provided in rectangular sheets that are several centimeters in size. The mechanical characteristics of the MAST Biosurgery Surgi-Wrap MAST Bioresorbable Sheet are substantially equivalent to the predicate devices. In addition to physical characteristics, both the predicate device and the MAST Biosurgery Surgi-Wrap MAST Bioresorbable Sheet can be cut to specific shapes and sizes by the end user.
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Image /page/3/Picture/1 description: The image is a seal for the Department of Health and Human Services. The seal is circular and contains the words "DEPARTMENT OF HEALTH AND HUMAN SERVICES, USA" around the perimeter. In the center of the seal is an abstract image of an eagle with three heads.
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
MAY 2 7 2005
Mr. Kenneth K. Kleinhenz Regulatory Affairs Mast Biosurgery Incorporated 6749 Top Gun Street, Suite C San Diego, California 92121
Re: K050332
Trade/Device Name: Surgi-Wrap MAST Bioresorbable Sheet Regulation Number: 21 CFR 878.3300 Regulation Name: Surgical Mesh Regulatory Class: II Product Code: FTL Dated: April 27, 2005 Received: April 29, 2005
Dear Mr. Kleinhenz:
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.
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 agencics. 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 sct 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.
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Page 2 – Mr. Kenneth K. Kleinhenz
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 (240) 276-0115 . Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR Part 807.97). 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) 443-6597 or at its Internet address http://www.fda.gov/cdrh/industry/support/index.html.
Sincerely yours,
Signature
Miriam C. Provost, Ph.D. Acting Director Division of General, Restorative and Neurological Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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K050332
# Indications for Use
510(k) Number : K050332
Device Name: Surgi-Wrap MAST Bioresorbable Sheet
# Indications for Use:
The Surgi-Wrap MAST Bioresorbable Sheet is to be used wherever temporary wound support is required, or costracters soft tissues where weakness exists in the urological, gynecological or gastroenterological anatomy, or for the repair of hemia or other fascial defects that require the addition of a reinforcing or bridging material to obtain the desired surgical result. This includes, but is not limited to the following procedures: pubourethral support and bladder support and vaginal prolapse repair, colon and rectal prolapse, repair, reconstruction of the pelvic floor and sacral colposuspension. The resorbable Protective Film minizes tissue attachment to the device in case of direct contact with the viscera. The device is indicated for open and laparoscopic procedures Laparoscopic procedures are limited to sizes from 0.02mm - 0.2mm in thickness.
Prescription Use (Part 21 CFR 801 Subpart D)
AND/OR
Over-The-Counter Use (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)
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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.