PHILLIP DOUGLAS PURDY, MD
Radiology at Harry Hines Blvd, Dallas, TX

8131353, Mar 6, 2012

Aug 31, 2010

12/872575

Phillip D. Purdy - Dallas TX, US

Board of Regents, The University of Texas System - Austin TX

A61B 5/0476

600544, 607 2, 607115, 607 45, 128898

Disclosed is a method of navigating a spinal subarchnoid space in a living being, that includes percutaneously introducing a device into the spinal subarachnoid space at an entry location. The device has a first passageway that is sized to slidably receive, and work with, at least a guidewire. The device can be a catheter or a sheath. The method can also include advancing the device within the spinal subarachnoid space at least more than 10 centimeters from the entry location. Alternatively, the method can include advancing the device within the spinal subarachnoid space to facilitate intracranial access with a second device introduced through the first passageway. Also disclosed is a device suited for attachment to a patient's skin, such as a sheath, that includes an elongated member, a skin-attachment apparatus having a flexible skin-attachment flap, and a valve apparatus.

7455666, Nov 25, 2008

Jul 13, 2001

09/905670

Phillip D. Purdy - Dallas TX, US

Board of Regents, The University of Texas System - Austin TX

A61M 31/00

604506

Disclosed is a method of navigating a spinal subarchnoid space in a living being, that includes percutaneously introducing a device into the spinal subarachnoid space at an entry location. The device has a first passageway that is sized to slidably receive, and work with, at least a guidewire. The device can be a catheter or a sheath. The method can also include advancing the device within the spinal subarachnoid space at least more than 10 centimeters from the entry location. Alternatively, the method can include advancing the device within the spinal subarachnoid space to facilitate intracranial access with a second device introduced through the first passageway. Also disclosed is a device suited for attachment to a patient's skin, such as a sheath, that includes an elongated member, a skin-attachment apparatus having a flexible skin-attachment flap, and a valve apparatus. The skin-attachment apparatus and the valve apparatus may be coupled to the elongated member in spaced relation to each other.

5925062, Jul 20, 1999

Sep 26, 1997

8/938081

Phillip D. Purdy - Dallas TX

Board of Regents, The University of Texas System - Austin TX

A61M 2900

606200

A multi-element occlusion device (10, 20, 30, 40) provides an improvement over existing systems by increasing the occupation of a vascular lumen. The device (10, 20, 30) comprises an anchoring element (12, 22, 32), a lead element (14, 24, 34) and at least one fiber (16, 26, 36) attaching said elements. The elements and fibers produce a cumulative occlusive effect greater than the sum of the individual elements. When placed in the blood stream, the anchoring element (12, 22, 32) lodges against the vessel wall and the lead element (14, 24, 34) is carried to a position distal thereto. In another embodiment, an "umbrella" of support members extend from the lead element. A fabric web extends between these support members. The umbrella intravascular device expands upon its exit from the catheter. The fabric web produces complete occlusion of the vessel without the need for thrombosis to form between the elements.

RE38972, Feb 7, 2006

Jul 19, 2001

09/909662

Phillip D. Purdy - Dallas TX, US

Board of Regents, The University of Texas System - Austin TX

A61B 29/00

606200

A multi-element occlusion device () provides an improvement over existing systems by increasing the occupation of a vascular lumen. The device () comprises an anchoring element (), a lead element () and at least one fiber () attaching said elements. The elements and fibers produce a cumulative occlusive effect greater than the sum of the individual elements. When placed in the blood stream, the anchoring element () lodges against the vessel wall and the lead element () is carried to a position distal thereto. In another embodiment, an “umbrella” of support members extend from the lead element. A fabric web extends between these support members. The umbrella intravascular device expands upon its exit from the catheter. The fabric web produces complete occlusion of the vessel without the need for thrombosis to form between the elements. With the use of multi-element deployment, the device decreases the risk of continued canalization and recanalization.

7150737, Dec 19, 2006

Dec 23, 2002

10/328560

Phillip D. Purdy - Dallas TX, US
Ajit Nair - Fremont CA, US
Kamal Ramzipoor - Fremont CA, US
Mehran Bashiri - San Carlos CA, US
Pete Phong Pham - Fremont CA, US

Sci/Med Life Systems, Inc. - Maple Grove MN
Board of Regents, The University of Texas System - Austin TX

A61M 31/00

604506, 604 9301

Disclosed are methods and devices for navigating a subarachnoid space in a vertebrate organism including percutaneously introducing a device into the spinal subarachnoid space at an entry location. Navigation of the spinal subarachnoid space is disclosed for the purpose of reaching a desired location in the subarachnoid space or the intracranial space, including areas in and around the spinal cord and brain. Once a desired location is reached, methods and devices for cooling or heating the desired location to cause physiologic changes are suggested.

5527338, Jun 18, 1996

Dec 9, 1993

8/164398

Phillip D. Purdy - Dallas TX

Board of Regents, The University of Texas System - Austin TX

A61B 1700

606200

A multi-element occlusion device (10, 20, 30, 40) provides an improvement over existing systems by increasing the occupation of a vascular lumen. The device (10, 20, 30) comprises an anchoring element (12, 22, 32), a lead element (14, 24, 34) and at least one fiber (16, 26, 36) attaching said elements. The elements and fibers produce a cumulative occlusive effect greater than the sum of the individual elements. When placed in the blood stream, the anchoring element (12, 22, 32) lodges against the vessel wail and the lead dement (14, 24, 34) is carded to a position distal thereto. In another embodiment, an "umbrella" of support members extend from the lead element. A fabric web extends between these support members. The umbrella intravascular device expands upon its exit from the catheter. The fabric web produces complete occlusion of the vessel without the need for thrombosis to form between the elements.

2012016, Jun 28, 2012

Mar 6, 2012

13/413368

Phillip D. Purdy - Dallas TX, US

A61M 25/14

604246

Disclosed are sheaths that comprise a first sheath member having a first passageway, a first length, and a first proximal end defined by a first valve apparatus configured to seal the first passageway, the first passageway having a first passageway diameter at a location in the first passageway; and a second sheath member coupled to the first sheath member, the second sheath member having a second passageway and a second length, the second passageway having a second passageway diameter at a location in the second passageway; where the first passageway and the second passageway are separate from each other and not co-axial, the first length is different from the second length, and the first and second sheath members are positioned beside each other for a portion of their first and second lengths.

7011647, Mar 14, 2006

Dec 23, 2002

10/328349

Phillip D. Purdy - Dallas TX, US
Ajit Nair - Fremont CA, US
Pete Phong Pham - Fremont CA, US
Kamal Ramzipoor - Fremont CA, US
Mehran Bashiri - San Carlos CA, US
Joseph C. Eder - Los Altos Hills CA, US

SciMed Life Systems, Inc. - Maple Grove MN
Board of Regents, The University of Texas System - Austin TX

A61M 5/178, A61M 25/01

60416404, 604525

A variety of devices for use in accessing the subarachnoid space are described. In several embodiments an introducer sheath is disclosed having three main sections, a distal portion, an intermediate portion, and a proximal portion. The distal portion and intermediate portion form a first bend, and the intermediate portion and the proximal portion form a second bend, giving the overall device a general L-shape, S-shape, C-shape, or a three dimensional Z-shape. Apparatuses for attaching an introducer sheath to the skin of a patient are also discussed, as are methods for using, shaping and sizing an introducer sheath.