(82 days)
The Apple Medical OB/Mobius Elastic Retractor is indicated for use to assist in nonurgent cesarean deliveries that are routine procedures. It is intended to provide incision retraction and to protect against wound contamination during a cesarean section. It is indicated for use as a surgical retractor for both vertical and transverse incisions.
The Apple Medical OB/Mobius® Elastic Retractor is a sterile disposable abdominal retractor consisting of two flexible plastic rings connected by a sleeve of soft, high yield strength, clear plastic film. The internal ring has a circular cross-section (o-ring) and the external ring has a cruciform cross-section (quad-ring). The inner diameter of the internal o-ring limits the radius of abdominal retraction. The diameter of the external quad-ring is the same as the diameter of the internal o-ring and the sleeve. When completely unwound, the height of the cylinder is 10.6 inches. When the quad ring is rolled down, the sleeve is wrapped around the circumference of the ring reducing the height of the sleeve by 1.5 inches per rotation. Because the sleeve film is radially unyielding, the reduction in height causes the radial retraction of the incision site.
The provided text describes a 510(k) summary for the Apple Medical OB/Mobius® Elastic Retractor. This is a medical device submission, not an AI/ML device, and therefore the information typically requested in an acceptance criteria and study description for AI/ML devices (like sample sizes for test and training sets, ground truth establishment, expert qualifications, adjudication methods, or MRMC studies) is not applicable or present in this document.
The "Testing" section only states: "The Apple Medical OB/Mobius Elastic Retractor has been clinically evaluated for the cesarean section indication and shown to be substantially equivalent to the predicate mechanical abdominal retractors."
Given the information in the document, here's what can be extracted:
1. A table of acceptance criteria and the reported device performance:
The document does not explicitly list acceptance criteria in a quantitative or qualitative manner typical for performance metrics. Instead, the basis for approval is "substantial equivalence" to predicate devices. The performance is indirectly described by its intended use and successful clinical evaluation to achieve substantial equivalence.
| Acceptance Criteria (Implied by Substantial Equivalence) | Reported Device Performance |
|---|---|
| Safe and effective for intended use | Clinically evaluated for cesarean section indication |
| Functionally equivalent to predicate mechanical abdominal retractors | Shown to be substantially equivalent to predicate mechanical abdominal retractors |
| Provides incision retraction | Intended to provide incision retraction |
| Protects against wound contamination | Intended to protect against wound contamination |
| Suitable for vertical and transverse incisions | Indicated for use as a surgical retractor for both vertical and transverse incisions |
2. Sample size used for the test set and the data provenance:
- Sample Size: Not specified in the provided document.
- Data Provenance: Not specified, other than "clinically evaluated." It does not mention country of origin or whether it was retrospective or prospective.
3. Number of experts used to establish the ground truth for the test set and the qualifications of those experts:
- This information is not provided as the device is a physical retractor, not an AI/ML diagnostic tool requiring expert ground truth establishment in the same way. The "clinical evaluation" would likely involve surgeons and medical staff, but specific numbers and qualifications for ground truth are not detailed.
4. Adjudication method (e.g. 2+1, 3+1, none) for the test set:
- Not applicable/Not specified for this type of device and submission.
5. If a multi reader multi case (MRMC) comparative effectiveness study was done, If so, what was the effect size of how much human readers improve with AI vs without AI assistance:
- Not applicable. This is a physical surgical retractor, not an AI-assisted diagnostic tool.
6. If a standalone (i.e. algorithm only without human-in-the-loop performance) was done:
- Not applicable. This is a manual surgical instrument, always used with human involvement.
7. The type of ground truth used:
- Not explicitly defined in terms of "ground truth" as it would be for an AI model. The "clinical evaluation" would have assessed the device's performance against clinical outcomes and the performance of existing predicate devices.
8. The sample size for the training set:
- Not applicable/Not specified. This is a physical device, not an AI model requiring a training set.
9. How the ground truth for the training set was established:
- Not applicable. This is a physical device.
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K050256
page 1 of 1
APR 2 6 7005
510(k) Summary
| Sponsor | Apple Medical Corporation28 Lord Road, Unit 135Marlboro, MA 01752 |
|---|---|
| Date of summary | April 20, 2005 |
| Device Trade Name | Apple Medical OB/Mobius® Elastic Retractor (OB/MER) |
| Common Name | Abdominal Retractor |
| Classification Name | Obstetric-gynecologic general manual instrument (884. 4520)Obstetric-gynecologic specialized manual instrument (884.4530)Manual surgical instruments for general use (878.4800) |
| Predicate Devices | The Apple Medical OB/Mobius® Elastic Retractor (K041131) and510(k) exempt mechanical abdominal retractors used in cesarean section. |
| Description | The Apple Medical OB/Mobius® Elastic Retractor is a sterile disposableabdominal retractor consisting of two flexible plastic rings connected by asleeve of soft, high yield strength, clear plastic film. The internal ring hasa circular cross-section (o-ring) and the external ring has a cruciformcross-section (quad-ring). The inner diameter of the internal o-ring limitsthe radius of abdominal retraction. The diameter of the external quad-ringis the same as the diameter of the internal o-ring and the sleeve. Whencompletely unwound, the height of the cylinder is 10.6 inches. When thequad ring is rolled down, the sleeve is wrapped around the circumferenceof the ring reducing the height of the sleeve by 1.5 inches per rotation.Because the sleeve film is radially unyielding, the reduction in heightcauses the radial retraction of the incision site. |
| Intended Use | The Apple Medical OB/Mobius Elastic Retractor is indicated for use toassist in non-urgent cesarean deliveries that are routine procedures. It isintended to provide incision retraction and to protect against woundcontamination during a cesarean section. It is indicated for use as asurgical retractor for both vertical and transverse incisions. |
| TechnologicalCharacteristics | The internal o-ring is manually collapsed and inserted through theabdominal incision where it is allowed to spring open against the parietalperitoneum. The external quad-ring is then pulled upward placing thecylindrical sleeve in tension and the operator rolls the ring down thesleeve until the ring sits firmly against the skin. The radial force of thetwo rings acts to retract the abdominal wall to the desired circulargeometry. |
| Testing | The Apple Medical OB/Mobius Elastic Retractor has been clinicallyevaluated for the cesarean section indication and shown to besubstantially equivalent to the predicate mechanical abdominal retractors. |
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DEPARTMENT OF HEALTH & HUMAN SERVICES
Image /page/1/Picture/2 description: The image shows a logo for the Department of Health & Human Services. The logo features a stylized eagle with three lines representing its wings. The text "DEPARTMENT OF HEALTH & HUMAN SERVICES" is arranged in a circular pattern around the eagle.
APR 2 6 2005
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
Apple Medical Corporation c/o Mr. James Delaney Boston Healthcare Associates, Inc. 75 Federal St., 9th Floor BOSTON MA 02110
Re: K050256
Trade/Device Name: Apple Medical OB/Mobius® Elastic Retractor Regulation Number: 21 CFR §884.4530 Regulation Name: Obstetric-gynecologic specialized manual instrument Product Code: KNA Regulation Number: 21 CFR §878.4800 Regulation Name: Manual surgical instrument for general use Product Code: GAD Regulatory Class: II Dated: April 1, 2005 Received: April 4, 2005
Dear Mr. Delaney:
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 (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 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); 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.
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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 one of the following numbers, based on the regulation number at the top of this letter:
| 21 CFR 876.xxxx | (Gastroenterology/Renal/Urology) | 240-276-0115 |
|---|---|---|
| 21 CFR 884.xxxx | (Obstetrics/Gynecology) | 240-276-0115 |
| 21 CFR 892.xxxx | (Radiology) | 240-276-0120 |
| Other | 240-276-0100 |
Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR 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/dsma/dsmamain.html
Sincerely yours,
Nancy C. brogdon
Nancy C. Brogdon Director, Division of Reproductive, Abdominal, and Radiological Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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Indications for Use
510(k) Number (if known): K050256
Device Name: Apple Medical OB/Mobius® Elastic Retractor
Indications for Use:
The Apple Medical OB/Mobius Elastic Retractor is indicated for use to assist in nonurgent cesarean deliveries that are routine procedures. It is intended to provide incision retraction and to protect against wound contamination during a cesarean section. It is indicated for use as a surgical retractor for both vertical and transverse incisions.
Prescription Use (Part 21 CFR 801 Subpart D)
AND/OR
Over-The-Counter Use (21 CFR 807 Subpart C)
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
Nancy C Bugdon
(Division Sign-Off)
Division of Reproductive, Abdominal,
and Radiological Devices
510(k) Number K050256
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§ 878.4800 Manual surgical instrument for general use.
(a)
Identification. A manual surgical instrument for general use is a nonpowered, hand-held, or hand manipulated device, either reusable or disposable, intended to be used in various general surgical procedures. The device includes the applicator, clip applier, biopsy brush, manual dermabrasion brush, scrub brush, cannula, ligature carrier, chisel, clamp, contractor, curette, cutter, dissector, elevator, skin graft expander, file, forceps, gouge, instrument guide, needle guide, hammer, hemostat, amputation hook, ligature passing and knot-tying instrument, knife, mallet, disposable or reusable aspiration and injection needle, disposable or reusable suturing needle, osteotome, pliers, rasp, retainer, retractor, saw, scalpel blade, scalpel handle, one-piece scalpel, snare, spatula, stapler, disposable or reusable stripper, stylet, suturing apparatus for the stomach and intestine, measuring tape, and calipers. A surgical instrument that has specialized uses in a specific medical specialty is classified in separate regulations in parts 868 through 892 of this chapter.(b)
Classification. Class I (general controls). The device is exempt from the premarket notification procedures in subpart E of part 807 of this chapter, subject to the limitations in § 878.9.