Dharmendra Singh Pal, 5638 Water Lily, Irvine, CA 92606

6863136, Mar 8, 2005

May 2, 2001

10/258007

Yoseph Bar-Cohen - Seal Beach CA, US
Stewart Sherrit - Altadena CA, US
Benjamin Dolgin - Northridge CA, US
Thomas M. Peterson - Erie PA, US
Dharmendra Pal - Erie PA, US
Jason Kroh - Erie PA, US
Ron Krahe - Girard PA, US

E21B007/24
E21B047/00

175 55, 175 20, 175 50, 175 58, 175316

Apparatus for probing, sensing, testing penetrating and sampling a medium generally includes an actuator () for generating vibrations at ultrasonic frequencies and a horn () coupled to the actuator () for amplifying the actuator vibrations along with a non-rotating coring and drilling bit () for penetrating the medium. A bit () includes a drill stem () attached to the horn () and a bore () extends through the bit (), horn () and actuator () for withdrawal of samples. A free mass () is disposed between the horn () and the drill stem () for oscillating therebetween in response to the actuator vibration for causing migration of medium debris around and through the actuator bore for effectively self-cleaning of the bit (). The hammering action of the free mass () is used for penetration of the medium and for analysis of the medium though the use of spaced apart accelerometers (and ).

7387612, Jun 17, 2008

Dec 4, 2003

10/729628

Dharmendra Pal - Miami Lakes FL, US
Thomas Peterson - Erie PA, US
Tao Song - Erie PA, US
Shu Du - Erie PA, US

Cybersonics, Inc. - Erie PA

A61B 17/00

601 2, 604 22

The present invention relates to a device with an ultrasonic-based probe for drilling and coring. The invention uses ultrasonic and subsonic vibrations produced by a frequency compensation coupler or free mass to produce the hammering action of a partially disengaged probe, with a relatively low axial force required. The invention can also be fitted with irrigation and aspiration capabilities. The invention can furthermore be furnished with a body sensor-feedback apparatus, which provides feedback to the operator as to the optimal frequency and power use of the generator. One embodiment of the invention also has a cooling mechanism to keep the drill or coring apparatus at an optimum temperature.

7766934, Aug 3, 2010

Jul 11, 2006

11/484464

Dharmendra Pal - Wilmington MA, US
David C. Lentz - Bloomington IN, US

Cook Incorporated - Bloomington IN

A61M 29/00

606200

An embolic protection device includes a basket defined by a section of a set of wires arranged as a plurality of struts. These struts are coupled together at their distal ends as well as to the distal end of a core wire or mandrel. Another section of the wires spirals around the core wire to define a hollow channel in which the core wire can reciprocate. Thus, pulling or pushing a proximal end of the core wire relative to the struts expands or contracts the basket. A filter bag is attached to the basket for capturing clots when the basket is in an expanded configuration.

7771452, Aug 10, 2010

Jul 11, 2006

11/484425

Dharmendra Pal - Wilmington MA, US
David Christian Lentz - Bloomington IN, US

Cook Incorporated - Bloomington IN

A61M 29/00

606200, 606191

An embolic protection device includes a basket defined by a section of a set of wires arranged as a plurality of struts. These struts are coupled together at the distal end of the basket in a manner to define an opening at the distal end through which a core wire can reciprocate. Another section of the wires spirals around the core wire to define a hollow channel in which the core wire can reciprocate. A filter bag is attached to the distal end of the core wire such that pulling a proximal end of the core wire relative to the spiraled section engages the filter bag with the distal end of the basket to expand the basket and filter bag for capturing clots, and pushing the core wire disengages the filter bag from the distal end of the basket to collapse the basket and filter bag.

7850708, Dec 14, 2010

Jun 19, 2006

11/455471

Dharmendra Pal - Wilmington MA, US

Cook Incorporated - Bloomington IN

A61M 29/00

606200, 623 111, 623 2372

An embolic protection device for capturing emboli during treatment of a stenotic lesion in a body vessel is disclosed. The device comprises a basket and a filter attached to the basket. The basket has a deployed state and an undeployed state. The basket includes a reticulated body having an outer diameter. The reticulated body includes a plurality of struts connected together in a singly staggered configuration distally along a longitudinal axis to a distal end. The plurality of struts of the reticulated body is configured to fold along the longitudinal axis. The basket has a proximal stem proximally extending from the body. The filter portion has a lip attached to the distal end defining an opening of the filter portion when the basket is in the deployed state for capturing emboli. The filter portion extends from the lip to a filter end.

7867247, Jan 11, 2011

Feb 26, 2010

12/714265

Dharmendra Pal - Wilmington MA, US
David Christian Lentz - Bloomington IN, US

Cook Incorporated - Bloomington IN

A61M 29/00

606200, 606191

A method for embolic protection during treatment of a stenotic lesion in a body vessel is provided. The method comprises disposing an embolic protection device in an undeployed state in the body vessel. The device comprises a basket with a set of struts extending from a distal end to a proximal end of the basket, the struts being arranged to define an opening at the distal end, the basket having an expanded state and a collapsed state. A core wire with a distal end and a proximal end is able to reciprocate through the opening at the distal end of the basket. A filter bag is attached only at the distal end of the core wire, the filter bag being located distally to the distal end of the basket when in the collapsed state. The method further comprises moving the core wire relative to the basket to expand the basket and the filter bag in a deployed state downstream from the stenotic lesion to capture emboli during treatment of the stenotic lesion.

7892215, Feb 22, 2011

Apr 20, 2006

11/408345

Jeffry Scott Melsheimer - Springville IN, US
Dharmendra Pal - Wilmington MA, US

Cook Incorporated - Bloomington IN

A61M 25/00
A61M 31/00
A61M 25/16

604284, 60410304, 604535

An insert for joining sheaths for use in a medical device is described. The insert has a first end including a first operative coupling and a second end including a second operative coupling. The first operative coupling is for engaging a first tube at its distal end, and the second operative coupling is for engaging a second tube at its proximal end. The insert also includes a first passageway extending through the insert from the second end to an exit port disposed between the first operative coupling and the second operative coupling. This disclosure also provides a catheter including such an insert, and a method of assembling a catheter.

7968032, Jun 28, 2011

Apr 20, 2006

11/408279

Dharmendra Pal - Wilmington MA, US

Cook Medical Technologies LLC - Bloomington IN

B29C 43/18
B29C 65/70

264262, 264263, 264230, 264313

Joint assemblies for joining sheaths for use in medical devices are provided, as are methods of manufacturing the joint assemblies. An elongate first sheath has a distal end portion having melt bonding material. A second sheath has first and second end portions, the second end portion having melt bonding material. An outer sleeve body includes proximal and distal engaging portions that have melt bonding materials. The proximal engaging portion is disposed about and melt bonded to the first sheath distal end portion. The distal engaging portion is disposed about and melt bonded to the second sheath proximal end portion. In one embodiment, one or both sheaths have an inner layer, a coiled middle layer optionally stopping short of the joint assembly, and an outer layer that has said melt bonding materials. In one embodiment, the sheaths are used in a rapid insertion catheter delivery system.