MEDTRONIC PS MEDICAL STRATA VALVE, MODELS 42855, 42865, 92865, 92855

K012052 · Medtronic PS Medical · JXG · Feb 11, 2002 · Neurology

Device Facts

• Record ID: K012052
• Device Name: MEDTRONIC PS MEDICAL STRATA VALVE, MODELS 42855, 42865, 92865, 92855
• Applicant: Medtronic PS Medical
• Product Code: JXG · Neurology
• Decision Date: Feb 11, 2002
• Decision: SESE
• Submission Type: Traditional
• Regulation: 21 CFR 882.5550
• Device Class: Class 2
• Attributes: Therapeutic

Intended Use

The STRATA™ Valve is a shunt component designed to provide continued Cerebrospinal Fluid (CSF) flow from the ventricles of the brain into the right atrium of the heart or the peritoneal cavity. The design allows the physician to non-invasively adjust valve pressure/performance level pre- and post-implantation by using a special magnetic adjustment tool. The tamper resistant design helps ensure that the valve's performance level is not inadvertently changed.

Device Story

STRATA Valve is an implantable CSF shunt component; manages intraventricular pressure (IVP) via ball-and-cone valve in series with siphon control mechanism. Device inputs: CSF flow from brain ventricles. Transformation: mechanical regulation of flow using spring-biased ball-in-cone seat and ruby valve element. Output: controlled CSF drainage. Used by neurosurgeons in clinical/surgical settings. Physician adjusts valve pressure non-invasively post-implantation using external magnetic tool; tamper-resistant mechanism prevents inadvertent pressure changes. Benefits patient by maintaining physiological IVP and minimizing over-drainage risks associated with siphon effects.

Clinical Evidence

No clinical data provided. Substantial equivalence is supported by bench testing, material biocompatibility, and design performance specifications compared to legally marketed predicate devices.

Technological Characteristics

Implantable valve; materials include 316L stainless steel spring coils, ruby valve element, and silicone elastomer outer jacket. Features ball-in-cone pressure valve and siphon control mechanism. Includes internal magnet for transcutaneous pressure adjustment. BioGlide surface modification applied. Mechanical operation; no software or electronic components.

Indications for Use

Indicated for patients requiring cerebrospinal fluid (CSF) shunting for the treatment of hydrocephalus, allowing for continuous controlled intraventricular pressure and CSF drainage from the cerebral ventricles to the right atrium or peritoneal cavity.

Regulatory Classification

Identification

A central nervous system fluid shunt is a device or combination of devices used to divert fluid from the brain or other part of the central nervous system to an internal delivery site or an external receptacle for the purpose of relieving elevated intracranial pressure or fluid volume (e.g., due to hydrocephalus). Components of a central nervous system shunt include catheters, valved catheters, valves, connectors, and other accessory components intended to facilitate use of the shunt or evaluation of a patient with a shunt.

Predicate Devices

• Johnson & Johnson Hakim Programmable Valve System (K974739)
• Johnson & Johnson Hakim Micro Programmable Valve System (K980778)
• Sophysa Pressure Adjustable Valve System (K992465)
• Medtronic PS Medical Delta-CSF Flow Control Valve (K902783)
• Medtronic PS Medical BioGlide CSF Flow Control Shunt Kit (K951258)

Reference Devices

• Medtronic PS Medical shunt configuration (K900676)
• Proximal and distal catheters (K792007, K792005)

Submission Summary (Full Text)

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# FEB 1 1 2002

012052 1/2

#### SAFETY AND EFFECTIVENESS SUMMARY (SMDA Requirements) X.

This summary of safety and effectiveness is submitted in accordance with the requirements of SMDA 1990 and 21 CFR 807.92

| Establishment Registration Number: | 2021898 |
|--------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------|
| Address of Manufacturer: | Medtronic Neurosurgery (formerly Medtronic PS<br>Medical)<br>125 Cremona Drive<br>Goleta CA, 93117<br>[phone] ext. 1770<br>Fax: [phone] |
| Contact Person: | Jeffrey Henderson |
| Date: | June 29, 2001 |
| Trade or Proprietary Name: | Medtronic PS Medical STRATA Valves |
| Common usual or Classification Name: | Central Nervous System Fluid Shunts and<br>Components, 21 CFR 882.5550 |

## Predicate Device Identification:

- 1.Johnson & Johnson Hakim Programmable Valve System (K974739), Johnson & Johnson Hakim Micro Programmable Valve System (K980778). Substantial equivalence is based upon materials, design, performance specifications and intended use.
- 2.Sophysa Pressure Adjustable Valve System (K992465). Substantial equivalence is based upon design, performance specifications and intended use.
- 3.Medtronic PS Medical Delta-CSF Flow Control Valve (K902783). Substantial equivalence is based upon materials, performance specifications, design and intended use.
- 4.Medtronic PS Medical BioGlide CSF Flow Control Shunt Kit (K951258). Identical material and manufacturing process used for surface modification of the product

### Description:

The STRATA™ Valve incorporates a ball and cone pressure valve in series with a normally closed siphon control mechanism. This combination enables the valve to maintain intraventricular pressure (IVP) within a normal physiological range, regardless of a patient's CSF flow requirements or body position.

Similar to the Hakim Programmable Valve and the Sophysa Pressure Adjustable Valve, the STRATA™ Valve incorporates the following features: (1) valve mechanism (spring biased ball in cone/seat), (2) 316L Stainless Steel spring coils for pressure flow regulation, (3) internal magnet, (4) valve element (ruby), (5) outer jacket (silicone elastomer). Additionally, the STRATA™ Valve incorporates a tamper-resistant internal dis-adjustment mechanism to prevent extreme changes in pressure (i.e., from the highest to the lowest settings) and a strong return spring to stabilize the rotor.

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#### 2/2 K012052

The STRATA Valve is available with the BioGlide surface modification, identical to that reviewed under K951258. The product is also provided as part of a shunt configuration equivalent to that reviewed under K900676 and K951258. The shunt consists of the valve and a proximal and distal catheter, equivalent to those reviewed under K792007 and K792005.

### Intended Use:

The STRATA™ Valve is a shunt component designed to provide continued Cerebrospinal Fluid (CSF) flow from the ventricles of the brain into the right atrium of the heart or the peritoneal cavity. The design allows the physician to non-invasively adjust valve pressure/performance level pre- and post-implantation by using a special magnetic adjustment tool. The tamper resistant design helps ensure that the valve's performance level is not inadvertently changed.

### Intended Use Predicate Device:

#### Hakim Programmable Valve

A shunt component designed to provide continued Cerebrospinal Fluid (CSF) flow from the ventricles of the brain into the right atrium of the heart or peritoneal cavity. The design allows the physician to non-invasively adjust valve pressure/performance level pre- and post-implantation by using a special valve programming unit.

## Sophysa Pressure Adiustable Valve System

An implantable device designed for the treatment of hydrocephalus in adult and pediatric patients by shunting, thereby providing continuous controlled intraventricular pressure and CSF drainage from the cerebral ventricles. Intraventricular pressure is maintained at a constant level by the device's ball in cone valve seat design, and the valve is pressure adjustable transcutaneously.

#### Delta Valve

A shunt component designed to provide continued Cerebrospinal Fluid (CSF) flow from the ventricles of the brain into the right atrium of the heart or peritoneal cavity with a siphon control component to minimize the influence of negative hydrostatic pressure caused by the vertical siphon effect of the distal catheter, thereby minimizing over-drainage of the ventricles of the brain which result from a siphon condition.

Technological comparison: The STRATA™ Valve is equivalent to the Hakim Programmable Valve, Sophysa Pressure Adjustable Valve, Delta Valve and BioGlide CSF Flow Control Shunt Kit in components, materials, construction and performance specifications. All components have been deemed biocompatible and chemically acceptable and are, thus, safe and effective for the valve's intended use.

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Image /page/2/Picture/1 description: The image is a black and white logo for the U.S. Department of Health & Human Services. The logo features a stylized depiction of an eagle with its wings spread, facing to the right. The eagle is composed of three curved lines that suggest feathers. The logo is encircled by the text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" in a circular arrangement.

Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850

FEB 1 1 2002

Mr. Jeffrey Henderson Vice President, Quality and Regulatory Affairs Medtronic PS Medical 125 Cremona Drive Goleta, California 93117

Re: K012052

Trade/Device Name: Medtronic Strata™ Valve Regulation Number: 882.5550 Regulation Name: Central nervous system fluid shunt and components Regulatory Class: II Product Code: JXG Dated: November 8, 2001 Received: November 13, 2001

Dear Mr. Henderson:

We have reviewed your Section 510(k) premarket notification of intent to market the device we nave reviewed your becamed the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate for use stated in the encrobate) to regard the Medical Device Amendments, or to conninered pror to May 20, 2011 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 I ou may, therefere, mains of the Act include requirements for annual registration, listing of general controls provision 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 may or subject to basil as a success 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 that I Dr has intatutes and regulations administered by other Federal agencies. You must or any I vith 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 (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. Jeffrey Henderson

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 and additionally 21 CFR Part 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" (21CFR Part 807.97). Other general information on your responsibilities under the Act may be obtained from the Division of Small Manufacturers, International and Consumer Assistance at its toll-free number [phone] or [phone] or at its Internet address http://www.fda.gov/cdrh/dsma/dsmamain.html

Sincerely yours,

uriam C. Provost

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

Enclosure

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STRATA™ Valve Device Name:

510(k) Number (if known):

"The STRATA™ Valve is a shunt component designed to provide continued Cerebrospinal Fluid (CSF) flow from the ventricles of the brain into the right atrium of the heart or peritoneal cavity. The design allows the physician to non-invasively adjust valve pressure/performance level pre- and post-implantation by using a special magnetic adjustment tool."

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# CONCURRENCE OF CDRH, OFFICE OF DEVICE EVALUATION (ODE)

iriam C. Provost

(Division Sign-Off) Division of General, Restorative and Neurological Devices

510(k) Number K012052

Over the Counter Use:_ or Prescription Use: (Per 21 CFR 801.109)

(optional format 1-2-96)