Mukund C Patel

US Patent:

6398773, Jun 4, 2002

Filed:

Jun 12, 2000

Appl. No.:

09/591733

Inventors:

Celso J. Bagaoisan - Union City CA
Hung V. Ha - San Jose CA
Mukund R. Patel - San Jose CA
Sivette Lam - San Jose CA
Mir Imran - Los Altos Hills CA

Assignee:

Medtronic PercuSurge, Inc - Sunnyvale CA

International Classification:

A61M 3100

US Classification:

604509, 604 28, 60410104

Abstract:

Aspiration catheters and methods for the treatment of an occlusion in a blood vessel. These catheters and methods are especially useful in the removal of occlusions from saphenous vein grafts, the coronary and carotid arteries, arteries above the aortic arch and even smaller vessels. The catheters of the present invention are provided in either over-the-wire or in single operator form. Radiopaque markers are preferably incorporated into distal ends of the catheters, and visual markers are incorporated into the proximal end of the catheters, to facilitate their positioning within the body. The catheters are provided with varying flexibility along the length of the shaft, such that they are soft and flexible enough to be navigated through the vasculature of a patient without causing damage, but are stiff enough to sustain the axial push required to position the catheter properly and to sustain the aspiration pressures. Support mandrels and support sheaths may also be added to impart additional strength to the length of the catheter.

US Patent:

6554795, Apr 29, 2003

Filed:

Feb 19, 1998

Appl. No.:

09/026225

Inventors:

Celso J. Bagaoisan - Union City CA
Ketan P. Muni - San Jose CA
Hung V. Ha - San Jose CA
Sivette Lam - San Jose CA
Mukund R. Patel - San Jose CA

Assignee:

Medtronic Ave, Inc. - Santa Rosa CA

International Classification:

A61M 2900

US Classification:

60410311, 606192, 606194, 264532

Abstract:

Disclosed herein is a compliant catheter balloon with an improved elastic response and reduced longitudinal expansion, and a method of forming the same. The balloon comprises a SEBS block copolymer, which is longitudinally pre-stretched during the balloon manufacture process. In order to control the working length of a balloon on a catheter, at least one adhesive stop is provided on the catheter which prevents adhesive from wicking into the working length of the balloon. Preferably, a pair of thermoset tubings with an outer diameter size close to the size of the inner diameter of the balloon are inserted on the distal portion of the catheter. After the proper placement of the balloon, the adhesive is applied at the balloons proximal and distal ends. As the adhesive wicks to the balloon, the thermoset tubings will eventually stop the adhesive to prevent further wicking of adhesive into the balloons working length. In another aspect of the present invention, there is provided a method of manufacturing a balloon catheter to improve centering of the balloon on the catheter.

US Patent:

6849068, Feb 1, 2005

Filed:

Dec 6, 1999

Appl. No.:

09/454522

Inventors:

Celso J. Bagaoisan - Union City CA, US
Hung V. Ha - San Jose CA, US
Mukund R. Patel - San Jose CA, US
Sivette Lam - San Jose CA, US

Assignee:

Medtronic AVE, Inc. - Santa Rosa CA

International Classification:

A61M 2500

US Classification:

604523, 604540

Abstract:

Aspiration catheters suitable for use in the treatment of an occlusion in a blood vessel are disclosed. These catheters are especially useful in the removal of occlusions from saphenous vein grafts, the coronary and carotid arteries, arteries above the aortic arch and even smaller vessels. The catheters of the present invention are provided in either over-the-wire or in single operator form. Radiopaque markers are preferably incorporated into distal ends of the catheters to facilitate their positioning within the body. The catheters are provided with varying flexibility along the length of the shaft, such that they are soft and flexible enough to be navigated through the vasculature of a patient without causing damage, but are stiff enough to sustain the axial push required to position the catheter properly and to sustain the aspiration pressures.

US Patent:

6994689, Feb 7, 2006

Filed:

Aug 10, 2000

Appl. No.:

09/636278

Inventors:

Celso J. Bagaoisan - Union City CA, US
Mukund R. Patel - San Jose CA, US
Ketan P. Muni - San Jose CA, US

Assignee:

Medtronic Vascular, Inc. - Santa Rosa CA

International Classification:

A61M 29/00
A61M 31/00
A61M 5/00

US Classification:

604107, 60410306, 60410303, 604264, 606198, 606191

Abstract:

A device for occluding a vessel employs one of a number of different expansion members joined to one or more elongate members. The expansion member may include a braid, one or more coils, ribs, a ribbon-like structure, a slotted tube, or a filter-like mesh. If the expansion member is enclosed by a suitable membrane, the device seals with the vessel wall to partially or completely occlude the vessel. A perforated membrane may be used to permit the perfusion of blood. The expansion member may be self-expanding, or it may be expanded by engaging it with one of the elongate members. Alternatively, the expansion member may be expanded by heating it.

US Patent:

7524103, Apr 28, 2009

Filed:

Aug 19, 2004

Appl. No.:

10/922746

Inventors:

Scott McGill - San Ramon CA, US
Mukund R. Patel - San Jose CA, US
Harold F. Carrison - Pleasanton CA, US

Assignee:

Boston Scientific Scimed, Inc. - Maple Grove MN

International Classification:

B01F 7/00
B01F 15/02
B01F 3/14

US Classification:

366189, 366192, 366195, 366289, 366332

Abstract:

An apparatus for mixing and dispensing a multi-component compound. The device includes a tubular body with an internal chamber for mixing the multi-component compound. Disposed within and extending beyond the tubular body is a rod having a mixing disc located near a distal end. Also disposed within the tubular body is a moveable piston with a central opening through which the rod may pass.

US Patent:

8038682, Oct 18, 2011

Filed:

Aug 17, 2004

Appl. No.:

10/920581

Inventors:

Scott McGill - San Ramon CA, US
Harold F. Carrison - Pleasanton CA, US
Mukund R. Patel - San Jose CA, US
Shana Castelli - San Francisco CA, US
Austin Hendricks - Fremont CA, US

Assignee:

Boston Scientific Scimed, Inc. - Maple Grove MN

International Classification:

A61B 17/58

US Classification:

606 94

Abstract:

An apparatus for delivering bone cement into a vertebra includes a cannula and a mix and delivery device pivotally coupled to the cannula. The mix and deliver provides a single device in which a flowable compound may be mixed and the dispensed into the vertebrae through the cannula. The mix and delivery device includes a piston, slidably disposed within a barrel of the device, for advancing the bone cement through an outlet communicating with the cannula. An actuating device, which exerts a pressure, is connected to an inlet on the mix and delivery device (either directly or through a tube). The pressure created by the actuating device is used to advance the piston within the mix and delivery device.

US Patent:

20020026145, Feb 28, 2002

Filed:

Nov 30, 2000

Appl. No.:

09/728585

Inventors:

Celso Bagaoisan - Union City CA, US
Hung Ha - San Jose CA, US
Mukund Patel - San Jose CA, US

International Classification:

A61M029/00
A61M031/00
A61M025/00

US Classification:

604/096010, 604/097010, 604/103030, 604/527000, 606/192000

Abstract:

Disclosed herein is a catheter for use in an emboli containment system. In one embodiment, the catheter has a tubular body with a metallic braid construction. Two lumens extend through the tubular body, the lumen being in a side-by-side configuration. One of the lumens functions as an inflation lumen, and is in fluid communication with an inflatable balloon mounted on the distal end of the catheter. The second lumen is adapted to receive other therapeutic catheters which comprise the emboli containment system. In another embodiment, apparatus is provided for treatment of a stenosis in a lumen in a blood-carrying vessel comprising a main catheter and a therapeutic catheter. The main catheter comprises a first flexible elongate tubular member having proximal and distal extremities. A sealing element is carried on the distal extremity of the first flexible elongate tubular member. The first flexible elongate tubular member has a main lumen therein extending from the proximal extremity to the distal extremity and exits through the distal extremity. An adapter is mounted on the proximal extremity of the first flexible elongate tubular member. The therapeutic catheter comprises a second flexible elongate tubular member having proximal and distal extremities. An element for performing work is mounted on the distal extremity of the second flexible elongate tubular member. An adapter is mounted on the proximal extremity of the second flexible elongate tubular member. The second flexible elongate tubular member is slidably mounted in the main lumen of the first elongate tubular member. A mechanism is carried by the first flexible elongate tubular member for causing the sealing element to form an occlusion in the vessel proximal of the stenosis to provide a working space distal of the sealing element. A mechanism is coupled to the attachment of the therapeutic catheter for causing operation of the element for performing work in the working space adjacent the stenosis.

US Patent:

20020035347, Mar 21, 2002

Filed:

Jul 18, 2001

Appl. No.:

09/909419

Inventors:

Celso Bagaoisan - Union City CA, US
Hung Ha - San Jose CA, US
Mukund Patel - San Jose CA, US
Sivette Lam - San Jose CA, US

International Classification:

A61M001/00

US Classification:

604/035000, 604/041000

Abstract:

Aspiration catheters suitable for use in the treatment of an occlusion in a blood vessel are disclosed. These catheters are especially useful in the removal of occlusions from saphenous vein grafts, the coronary and carotid arteries, arteries above the aortic arch and even smaller vessels. The catheters of the present invention are provided in either over-the-wire or in single operator form. Radiopaque markers are preferably incorporated into distal ends of the catheters to facilitate their positioning within the body. The catheters are provided with varying flexibility along the length of the shaft, such that they are soft and flexible enough to be navigated through the vasculature of a patient without causing damage, but are stiff enough to sustain the axial push required to position the catheter properly and to sustain the aspiration pressures.