DR. JOHN R BOOKWALTER, M.D.
Radiology at Belmont Ave, Brattleboro, VT

D388515, Dec 30, 1997

May 30, 1996

D/055051

John R. Bookwalter - Brattleboro VT
David T. Adler - Manhasset NY

Flexbar Machine Corp. - Islandia NY

2401

D24138

D349573, Aug 9, 1994

Aug 17, 1992

7/930904

John R. Bookwalter - Brattleboro VT
David T. Adler - Manhasset NY

Flexbar Machine Corp. - Central Islip NY

D24128

4926877, May 22, 1990

Apr 24, 1989

7/342198

John R. Bookwalter - Brattleboro VT

A61B 1000

128754

A hollow tubular needle body open at a distal end, tapers inwardly to define a distal end opening of reduced cross-section relative to the balance of the biopsy needle hollow tubular body bore. The distal end of the hollow tubular needle body is provided with an axially oblique sharp cutting edge terminating in a pointed tip to facilitate skin penetration. A hollow tubular needle body is of racetrack cross-section, formed by opposed parallel straight walls joined at opposite ends to respective arcuate walls. Laterally projecting ribs provided within the hollow tubular needle body at the juncture between one arcuate wall and the opposed, parallel straight walls support a thin flexible strip formed guillotine cutting blade, having a lateral width less than the distance between the opposed parallel straight body walls facing the one arcuate wall for longitudinal sliding movement toward and away from the needle body distal end. The blade width is in excess of the width of the distal end opening, and the blade terminates in a transverse arcuate leading edge conforming to the arcuate shape of the hollow tubular needle body distal end arcuate wall with which it contacts, to insure sealing of the blade as it traverses across the distal end opening parallel to the oblique distal end cutting edge and to effect complete severence of tissue within the bore. The racetrack configuration of the needle body permits orientation of the needle while insuring severence of a full section of biopsy tissue at the very tip of the needle.

5375481, Dec 27, 1994

Nov 12, 1993

8/152118

Rene J. Cabrera - Stoughton MA
Francisco A. Amaral - New Bedford MA
John J. Amaral - South Dartmouth MA
John R. Bookwalter - Brattleboro VT

Codman & Shurtleff, Inc. - Randolph MA

G05G 100, A61B 1702

74577M

A multi-position ratchet mechanism for holding a surgical retractor blade which permits a retractor blade to be rotated into the wound and retracted at the same time to duplicate the natural "toe-in" method of retraction achieved with the hand. The ratchet mechanism includes a ratchet holder to which is pivotally attached a ratchet pivot housing. The retractor blade is mounted in an opening projecting through ratchet pivot housing and held in position by a retractor pawl attached to the ratchet pivot housing. The ratchet pivot housing also has a curved ratchet which depends into a cooperating slot in the ratchet holder and engages a ratchet release bar which is mounted on the ratchet holder and spring biased into the ratchet slot. One end of ratchet release bar is positioned under an actuating surface of the retractor pawl. The application of pressure on the actuating surface will release both ratchets to allow adjustment of the retractor blade.

4424724, Jan 10, 1984

Oct 9, 1981

6/309951

John R. Bookwalter - Brattleboro VT
Alan I. West - Concord MA

Codman & Shurtleff, Inc. - Randolph MA

G05G 506

74540

A multi-position ratchet mechanism for holding a surgical retractor blade which permits a retractor blade to be rotated into the wound and retracted at the same time to duplicate the natural "toe-in" method of retraction achieved with the hand. The ratchet mechanism includes a ratchet holder to which is pivotably attached a ratchet pivot housing. The retractor blade is mounted in an opening projecting through ratchet pivot housing and held in position by a retractor pawl attached to the ratchet pivot housing. The ratchet pivot housing also has a curved ratchet which depends into a cooperating slot in the ratchet holder and engages a pivot pawl rotatably mounted and spring biased into the ratchet slot. The holder includes a transverse slot which slides onto an oval ring which is mounted about the incision site.

2013008, Apr 4, 2013

Sep 30, 2011

13/249452

VICTOR AGBODOE - RAYNHAM MA, US
OLAF STORZ - EMMINGEN, DE
JOHN R. BOOKWALTER - BRATTLEBORO VT, US

CODMAN & SHURTLEFF, INC. - RAYNHAM MA

F16M 13/00

248315

A retractor ring assembly includes a ring holder that has a first selectively engaged connection and a second selectively engaged connection. A first and second ring portion each has a proximal end and a distal end. The proximal end of the first and second ring portions are selectively connected to the respective first and second selectively engaged connections of the ring holder. The distal end of the first ring portion has a third selectively engaged connection. The distal end of the second ring portion has a fourth selectively engaged connection. The third selectively engaged connection and the fourth selectively engaged connection are connectable to form a reinforced closed ring configuration, and are disconnectable to form an open ring configuration.

2010021, Aug 19, 2010

Apr 30, 2010

12/771562

Bob Sommerich - Norton MA, US
John Bookwalter - Brattleboro VT, US

CODMAN & SHURTLEFF, INC. - Raynham MA

A61B 1/32

600203

A disposable cover for a retractor of a self-retaining retractor system has an elastic sheath that can be easily placed and removed by elastically engaging the blade and a disposable pad attached on the elastic sheath. The elastic sheath can be an open cylinder (band shaped) or closed at one end (sock shaped) and is sized to cover a majority of the different size and shaped retractor blades. The elastic sheath retains the disposable pad on the blade by elastic compressive force. A single elastic sheath must be elastic enough to accommodate multiple sized blades and retain them in a fixed position while the blade is approximately vertically disposed within patient. The elastic sheath can be made from latex, nylon or any other surgical grade elastic or elastic type product.

5320444, Jun 14, 1994

Jan 22, 1993

8/007910

John R. Bookwalter - Brattleboro VT
William H. Bookwalter - Burlington VT

A61F 504, B25B 516

403323

A threaded rod has a ball at one end and a stationary jaw at an opposite end with an end cap covering the end of the rod. A threaded collar pushes a movable jaw along the threaded rod toward the stationary gripping jaw by turning the collar clockwise. The movable collar has a cylindrical dome which covers the threaded rod and the end cap. An interior sleeve secured to the threaded collar at one end by an interior ring has a ridge at the other end of the interior sleeve which pulls the movable jaw away from the stationary jaw by turning the collar counter-clockwise to release the jaws. The ball on one end of the clamp is inserted in an existing float and lock ball system attached to a stabilizing post on an operating table bed. The clamp secures surgical apparatus in place over the patient on the operating table.

2006008, Apr 20, 2006

Sep 30, 2004

10/955457

Bob Sommerich - Norton MA, US
John Bookwalter - Brattleboro VT, US

Codman & Shurtleff, Inc. - Raynham MA

A61B 1/32

600210000

A disposable cover for a retractor of a self-retaining retractor system has an elastic sheath that can be easily placed and removed by elastically engaging the blade and a disposable pad attached on the elastic sheath. The elastic sheath can be an open cylinder (band shaped) or closed at one end (sock shaped) and is sized to cover a majority of the different size and shaped retractor blades. The elastic sheath retains the disposable pad on the blade by elastic compressive force. A single elastic sheath must be elastic enough to accommodate multiple sized blades and retain them in a fixed position while the blade is approximately vertically disposed within patient. The elastic sheath can be made from latex, nylon or any other surgical grade elastic or elastic type product.

4467791, Aug 28, 1984

Jun 27, 1983

6/507821

Rene J. Cabrera - Brockton MA
George W. Guay - North Scituate MA
John R. Bookwalter - Brattleboro VT

Codman & Shurtleff, Inc. - Randolph MA

A61B 1702

128 20

A quick-release ratcheting holder for a surgical retractor which includes a spring detent to keep the holder from coming off the ring member when the retractor is relaxed.