WELCH ALLYN DURASHOCK BLOOD PRESSURE SYSTEM

K012455 · Welch Allyn, Inc. · DXQ · Aug 17, 2001 · Cardiovascular

Device Facts

• Record ID: K012455
• Device Name: WELCH ALLYN DURASHOCK BLOOD PRESSURE SYSTEM
• Applicant: Welch Allyn, Inc.
• Product Code: DXQ · Cardiovascular
• Decision Date: Aug 17, 2001
• Decision: SESE
• Submission Type: Abbreviated
• Regulation: 21 CFR 870.1120
• Device Class: Class 2
• Attributes: Pediatric

Intended Use

The DuraShock™ Blood Pressure System is intended for the non-invasive blood pressure measurement of adult and pediatric patients. The device is not designed, sold or intended for use except as indicated. The Welch Allyn® DuraShock™ Blood Pressure System is not designed for use with neonates. To ensure pediatric blood pressure accuracy and safety, note that the Welch Allyn® DuraShock™ child is the smallest cuff approved for use with children and infants whose arm circumference fit within the range markings on the cuff.

Device Story

Non-invasive blood pressure measurement device; consists of DuraShock™ gauge, integrated one-piece cuff, bulb, valve, and tubing. Gauge utilizes spring-driven movement (NCA spring wrapped around pin) instead of traditional gear-driven movement; gauge inserts directly into cuff bladder port. Used in hospitals, clinics, ambulatory centers, nursing homes, and home health care. Operated by clinicians; gauge attachment to cuff allows hands-free reading while clinician holds stethoscope and inflation bulb. Benefits include increased durability and improved convenience/readability. Models ds44 and ds45 differ in warranty and component materials (valve/bulb/tubing).

Clinical Evidence

Bench testing only. Device performance validated against AAMI SP9-1994 standards for blood pressure measurement accuracy.

Technological Characteristics

Manual aneroid sphygmomanometer. Spring-driven movement (NCA spring). Integrated one-piece cuff with direct-insert gauge port. Materials: Neoprene/PVC bulbs, metal/plastic valves, TPR/PVC tubing. Dimensions: 2.1" x 2.1" x 0.85". Operating temp: 0 to 46 °C. Humidity: 0-85% RH. Complies with AAMI SP9-1994.

Indications for Use

Indicated for non-invasive blood pressure measurement in adult and pediatric patients. Not indicated for neonates. Pediatric use requires arm circumference to fit within cuff range markings.

Regulatory Classification

Identification

A blood pressure cuff is a device that has an inflatable bladder in an inelastic sleeve (cuff) with a mechanism for inflating and deflating the bladder. The cuff is used in conjunction with another device to determine a subject's blood pressure.

Predicate Devices

• Welch Allyn, Tycos® Econo Blood Pressure Sphygmomanometer (pre-amendment device)

Submission Summary (Full Text)

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Kd2455

# AUG 1 7 2001

#### 510(k) Summary II.

[As described in CFR 807.92]

| Submitted by: | Welch Allyn Inc.<br>95 Old Shoals Road<br>Arden, NC 28704 |
|----------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Contact Person: | David A. Young II<br>Quality Assurance Engineer |
| Date Prepared: | 15 January 2001 |
| Proprietary Name: | Welch Allyn® DuraShock™ Blood Pressure System |
| Common Name: | Blood Pressure Sphygmomanometer |
| Classification Name: | Class II 870.1120 Blood Pressure Cuff |
| Predicate Device: | Welch Allyn, Tycos® Econo Blood Pressure<br>Sphygmomanometer<br>Welch Allyn, Inc.<br>510(k) Document Control Number NA (predicate device is<br>a pre-amendment device) |

# Description of the Device:

The Welch Allyn® DuraShock™ Blood Pressure System is a non-invasive blood pressure (BP) measurement device. The DuraShock™ Blood Pressure System is designed to non-invasively measure systolic and diastolic blood pressure for adult and pediatric patients. The Welch Allyn® DuraShock™ Blood Pressure System consists of five components, DuraShock™ Gauge, Integrated One Piece Cuff, Bulb, Valve, and Tubing. The DuraShock™ Blood Pressure System comes in two models. Model ds44 is a lower cost unit with a 5 year warranty, while model ds45 is a higher cost unit that carries a 10 year warranty. Each model will be available in four cuff sizes, Large Adult, Adult, Small Adult, and Child which conform to AAMI SP-9, and AHA. The DuraShock™ Gauge is revolutionary, in that in place of a gear driven movement as found in traditional aneroids, the NCA spring driven movement will be utilized, providing the user with a more durable aneroid. The NCA spring driven movement as opposed to using gears, diaphragm travel is converted to pointer rotation by using a spring wrapped around a pin. The DuraShock™ system also features a Integrated one piece cuff with integral bladder that contains a port where the DuraShock™ Gauge can be directly inserted into the bladder of the cuff. This point of attachment of gauge

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to cuff, will make it more convenient for use, as well as making it easier for the clinician to read. By attaching directly to the bladder, this will allow the clinician to read the gauge without holding it, thus freeing up their hands to hold the stethoscope head, and bulb and valve to inflate the cuff. The DuraShock™ model ds45 configurations, will utilize a black neoprene bulb, metal valve, and black TPR tubing that is currently being used on the Welch Allyn Tycos® Econo Blood Pressure System. On DuraShock™ model ds44 configurations, a plastic valve, gray PVC bulb and gray TPR tubing will be used.

The Welch Allyn® DuraShock™ Blood Pressure System is intended for use in a wide variety of settings. This includes hospital departments, alternate care settings, such as physician offices, freestanding ambulatory care and surgery centers, health clinics and nursing homes, as well as home health care.

## Indications/Contraindications For Use of the Device:

The Welch Allyn® DuraShock™ Blood Pressure System has the same intended use as the predicate device. The device is intended for the non-invasive blood pressure measurements of adult and pediatric patients. The device is not designed, sold or intended for use except as indicated.

### The Welch Allyn® DuraShock™ Blood Pressure System is not designed for use

with neonates. To ensure pediatric blood pressure accuracy and safety, note that the Welch Allyn® DuraShock™ Child cuff is the smallest cuff approved for use with DuraShock™ aneroid on children and infants. For the DuraShock™ Blood Pressure System to accurately determine blood pressure, the circumference of the child or infant's arm must fit within the range markings on the cuff.

## Technological Characteristics:

The Welch Allyn® DuraShock™ Blood Pressure System differs from the predicate device, in that it utilizes the NCA spring movement in place of the traditional gear driven movement. The DuraShock™ Blood Pressure System also utilizes a Integrated one piece cuff that has a port in which the DuraShock™ gauge can be inserted directly into the bladder of the cuff. The predicate device utilizes a hose port, and length of black TPR tubing to attach the gauge to the cuff. The same black neoprene manual bulb, valve, and black TPR tubing will be utilized on the DuraShock™ model ds45 that is currently used on the predicate device, while model ds44 will use a plastic valve, gray PVC bulb and gray TPR tubing will be used. The following table summarizes the similarities and differences between the Welch Allyn® DuraShock™ Blood Pressure System and the Welch Allyn Tycos® Econo Blood Pressure System.

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# Table 1

Specifications & Technological Comparison Between the Welch Allyn® DuraShock™ Blood Pressure System and the Welch Allyn Tycos® Econo Blood Pressure System.

| | Welch Allyn®<br>DuraShock™ Blood<br>Pressure System<br>Model ds45 | Welch Allyn®<br>DuraShock™ Blood<br>Pressure System<br>Model ds44 | Welch Allyn,<br>Tycos® Econo<br>Blood Pressure<br>System. |
|----------------------------|----------------------------------------------------------------------|-------------------------------------------------------------------|----------------------------------------------------------------------|
| Blood Pressure | | | |
| BP Determination<br>Method | Non-invasive | Non-invasive | Non-invasive |
| Initial Cuff<br>Inflation | Operator dependent<br>capable of inflation to<br>300 mmHg. | Operator dependent<br>capable of inflation to<br>300 mmHg. | Operator dependent<br>capable of inflation to<br>300 mmHg. |
| Inflation/Deflation | Black Neoprene<br>Manual Bulb, Metal<br>Valve, & Black TPR<br>Tubing | Gray PVC Manual<br>Bulb, Plastic Valve,<br>& Gray TPR Tubing | Black Neoprene<br>Manual Bulb, Metal<br>Valve, & Black TPR<br>Tubing |
| Movement | Spring Driven | Spring Driven | Gear Driven |
| Measurement<br>Range | | | |
| Systolic | 20-300 mmHg | 20-300 mmHg | 20-300 mmHg |
| Diastolic | 20-300 mmHg | 20-300 mmHg | 20-300 mmHg |
| Measurement<br>Accuracy | | | |
| Cuff Pressure | +/- 3 mmHg | +/- 3 mmHg | +/- 3 mmHg |
| Blood Pressure | AAMI SP9-1994 | AAMI SP9-1994 | AAMI SP9-1994 |
| Measurement time<br>(sec.) | 30-60 sec. Typical | 30-60 sec. Typical | 30-60 sec. Typical |
| Overall System | | | |
| Patient Population | Pediatric/Adult | Pediatric/Adult | Pediatric/Adult |
| Display Type | Dial | Dial | Dial |
| Warranty | Ten Years | Five Years | Ten Years |
| DuraShock™<br>Gauge: | | | |
| Length | 2.1 inches (5.33 cm) | 2.1 inches (5.33 cm) | 3.75 inches (9.525<br>cm) |
| Width | 2.1 inches (5.33 cm) | 2.1 inches (5.33 cm) | 2.35 inches (5.97 cm) |
| Height | 0.85 inches (2.16 cm) | 0.85 inches (2.16 cm) | 1.25 inches (3.18 cm) |
| Weight | 0.10 lb. (45.36 g) | 0.10 lb. (45.36 g) | 0.35 lb. (158.76 g) |
| Protective Bumper | Yes (Black & Gray) | Yes (Multi-Color) | No |
| Cuff: | Durable Integrated<br>One Piece with<br>DuraShock™ Port | Durable Integrated<br>One Piece with<br>DuraShock™ Port | One Piece Cuff with<br>no DuraShock™ Port |
| Cuff Sizes | Lg. Adult, Adult, Sm. | Lg. Adult, Adult, Sm. | Thigh, Lg. Adult, |
| (Available) | Adult, Child | Adult, Child | Adult, Sm. Adult,<br>Child, Sm. Child,<br>Infant, Newborn |
| Point of<br>Attachment | Inserted Directly into<br>Bladder Section of<br>Cuff | Inserted Directly into<br>Bladder Section of<br>Cuff | Attaches to Hose Port<br>of Cuff via Length of<br>TPR/PVC Tubing |
| Operating<br>Conditions | | | |
| Operating<br>Temperature | 0 to 46 °C | 0 to 46 °C | 0 to 46 °C |
| Humidity Range | 0 to 85% RH non-<br>condensing | 0 to 85% RH non-<br>condensing | 0 to 85% RH non-<br>condensing |
| Storage<br>Temperature | -34 to 70 °C | -34 to 70 °C | -34 to 70 °C |

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Image /page/4/Picture/1 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo consists of a circular seal with the text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" arranged around the perimeter. Inside the circle is a stylized image of three human profiles facing to the right, stacked on top of each other, resembling an abstract bird.

AUG 1 7 2001

Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850

Mr. David A. Young II Quality Assurance engineer Welch Allyn, Inc. 95 Old Shoals Road Arden, NC 28704

K012455 Re:

> Device Name: DuraShock Blood Pressure System Regulation Number: 870.1120 Regulatory Class: Class II (two) Product Code: DXQ Dated: July 9, 2001 Received: August 1, 2001

Dear Mr. Young:

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 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 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.

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Page 2 - Mr. David A. Young II

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 nvellicate 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 additionally 609110 for questions on the promotion and advertising of your device, (1) = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = entitled, "Misbranding by reference to premarket notification" (21CFR 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,

collefo

James E. Dillard III Director Division of Cardiovascular and Respiratory Devices Office of Device Evaluation Center for Devices and Radiological Health

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### Indications for Use Statement VII.

| 510(k) Number: | Unknown |
|----------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Device Name: | Welch Allyn® DuraShock™ Blood Pressure System |
| Indications for use: | The DuraShock™ Blood Pressure System is intended for the non-<br>invasive blood pressure measurement of adult and pediatric<br>patients. The device is not designed, sold or intended for use<br>except as indicated. The Welch Allyn® DuraShock™ Blood<br>Pressure System is not designed for use with neonates. To ensure<br>pediatric blood pressure accuracy and safety, note that the Welch<br>Allyn® DuraShock™ child is the smallest cuff approved for use<br>with children and infants whose arm circumference fit within the<br>range markings on the cuff. |

(Please Do Not Write Below This Line - Continue On Another Page If Needed)

Concurrence of CDRH, Office of Device Evaluation (ODE)

Prescription Use_

Or Over-The-Counter Use_

(Per 21 CFR 801.109)

Ostrich
Division of Cardiovascutar & Respiratory Devices
510(k) Number Kolaus