PLUS EPF ACETABULAR CUP

K972931 · Hhl Consulting · LWJ · Nov 13, 1997 · Orthopedic

Device Facts

• Record ID: K972931
• Device Name: PLUS EPF ACETABULAR CUP
• Applicant: Hhl Consulting
• Product Code: LWJ · Orthopedic
• Decision Date: Nov 13, 1997
• Decision: SESE
• Submission Type: Traditional
• Regulation: 21 CFR 888.3360
• Device Class: Class 2
• Attributes: Therapeutic

Intended Use

The PLUS EPF Acetabular Cup is intended for all types of arthrosis. such as advanced destruction of the hip joint due to degenerative, post-traumatic or rheumatoid arthritis, fracture or avascular necrosis of the femoral head, sequelae of previous operations, such as internal fixation, joint reconstruction, arthrodesis, hemiarthroplasty or total hip replacement. The same considerations apply to acetabular revisions. In normal cases, however, the surgeon will use an acetabular implant one size larger and in exceptional cases two sizes larger.

Device Story

PLUS EPF Acetabular Cup is a cementless total hip prosthesis component; features triple-radius profile design. Device implanted by surgeons in clinical settings to replace damaged acetabulum. Principle of operation involves press-fit fixation with physiological load transfer through the peripheral acetabular zone; design promotes osseous integration and primary stability without screw fixation. Output is the physical implant itself, which restores hip joint function. Benefits include minimal bone resection and stable fixation for patients requiring hip arthroplasty or revision.

Clinical Evidence

Bench testing only. Biomechanical performance evaluated by comparing the PLUS EPF Cup against four competitive cementless acetabular cups. Testing measured: 1) pull-out force to unseat the titanium cup; 2) push-out force for the polyethylene liner; 3) force required to seat the cup into a foam block simulating a reamed acetabulum. Results indicated the PLUS EPF Cup was comparable to or exceeded the performance of competitive devices.

Technological Characteristics

Cementless acetabular cup; triple-radius profile design; titanium construction. Designed for press-fit fixation. No software or energy source.

Indications for Use

Indicated for patients with advanced hip joint destruction due to degenerative, post-traumatic, or rheumatoid arthritis, femoral head fracture or avascular necrosis, or sequelae of prior surgeries (e.g., internal fixation, joint reconstruction, arthrodesis, hemiarthroplasty, total hip replacement) and acetabular revisions. Contraindicated in patients with acute/chronic local or systemic infections, serious muscle/nerve/blood vessel lesions, poor bone quality/defects endangering stability, or concurrent diseases interfering with implant function.

Regulatory Classification

Identification

A hip joint femoral (hemi-hip) metallic cemented or uncemented prosthesis is a device intended to be implanted to replace a portion of the hip joint. This generic type of device includes prostheses that have a femoral component made of alloys, such as cobalt-chromium-molybdenum. This generic type of device includes designs which are intended to be fixed to the bone with bone cement (§ 888.3027) as well as designs which have large window-like holes in the stem of the device and which are intended for use without bone cement. However, in these latter designs, fixation of the device is not achieved by means of bone ingrowth.

Predicate Devices

• Press-fit Cup (K961526)

Submission Summary (Full Text)

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## 510(k) Summary of Safety and Effectiveness Information

(as required by 807.92c), prepared by Hartmut Loch, President of HHL Consulting for PLUS Orthopedics in San Diego, California August 6, 1997

NOV 1 3 1997

Trade name: PLUS EPF Acetabular Cup

Common name: Cementless Total Hip Prosthesis, Acetabular Component

Classification name: Hip joint metal/polymer/metal semi constrained porous coated uncemented prosthesis

Equivalence: We are claiming substantial equivalency to the cementless Press-fit Cup, marketed by Encore Orthopedics, Austin, Texas (K-961526).

Characteristics: The PLUS EPF Cup is a cementless acetabular cup, which was designed with a triple-radius profile. The advantages are 1) minimal bone resection, 2) press-fit with physiological load transfer through the peripheral zone of the acetabulum, thus ensuring good primary stability without the need for screw fixation and 3) optimal osseous integration due to good primary stability.

The PLUS EPF Cup is intended for all types of arthrosis, such as Indications: advanced destruction of the hip joint due to degenerative, post-traumatic or rheumatoid arthritis, fracture or avascular necrosis of the femoral head, sequelae of previous operations, such as internal fixation, joint reconstruction, arthrodesis, hemiarthroplasty or total hip replacement. The same considerations apply to acetabular revisions. In normal cases, however, the surgeon will use an acetabular implant one size larger and in exceptional cases two sizes larger.

Contraindications: Contraindications include acute or chronic infections (local or systemic), serious lesions of muscles, nerves or blood vessels, which put the affected limb at risk, bony defects or poor bone quality, which might endanger the stability of the prosthesis, and any concurrent disease, which might interfere with the function of the implant.

The following three biomechanical tests were performed Performance data: comparing four cups of other leading manufacturers to the PLUS EPF Cup: out force necessary to unseat the titanium cup from the acetabulum, 2) the push-out force necessary to push the polyethylene liner out of the cup, and 3) the force required to seat the acetabular cups into a block of foam that simulated the reamed acetabulum. In all tests the PLUS EPF Cup was comparable to, or exceeded, cementless competitive acetabular cups.

☎ 415.572.0100 fax [phone] pager 415.202.6680

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Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850

Mr. Hartmut Loch ·President HHL Consulting Representing Plus Orthopedics 835 Cortez Lane Foster City, California 94404

v. 13, 1997

K972931 Re: Plus EPF Acetabular Cup Trade Name: Requlatory Class: II Product Code: LWJ Dated: October 27, 1997 October 27, 1997 Received:

Dear Mr. Loch:

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 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 The general controls provisions of the Act 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 Requlations, Title 21, Parts 800 to 895. A substantially equivalent determination assumes compliance with the current Good Manufacturing Practice requirement, 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 requlation 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 obliqation 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 requlations.

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Page 2 - Mr. Hartmut Loch

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 [phone]. Additionally, for questions on the promotion and advertising of your device, please contact the Office of Compliance at [phone]. 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 [phone] or [phone] or at its internet address "http://www.fda.gov/cdrh/dsmamain.html".

Sincerely yours,

Celia M. Witten, Ph.D., M.D. Director Division of General and Restorative Devices Office of Device Evaluation Center for Devices and Radiological Health

Enclosure

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Page _1__of____1

(97293 510(k) Number (if known): K-972931

Device Name: PLUS EPF ACETABULAR CUP

Indications for Use:

The PLUS EPF Acetabular Cup is intended for all types of arthrosis. such as advanced destruction of the hip joint due to degenerative, post-traumatic or rheumatoid arthritis, fracture or avascular necrosis of the femoral head, sequelae of previous operations, such as internal fixation, joint reconstruction, arthrodesis, hemiarthroplasty or total hip replacement. The same considerations apply to acetabular revisions. In normal cases, however, the surgeon will use an acetabular implant one size larger and in exceptional cases two sizes larger.

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Concurrence of CDRH, Office of Device Evaluation (ODE)

K972931

Prescription Use × (Per 21 CFR 801.109)

.. *

OR

Over-The-Counter Use

(Optional Format 1-2-96