Chao Tzu Chen

US Patent:

20080102035, May 1, 2008

Filed:

Oct 31, 2006

Appl. No.:

11/590405

Inventors:

Vipul Bhupendra Dave - Hillsborough NJ, US
Chao Chen - Edison NJ, US
Jason Allan Massey - Oakville, CA
David G. Cook - Erin, CA
Jacob Leidner - Toronto, CA

International Classification:

A61K 49/04
A61F 2/06

US Classification:

424 94, 424423, 6048901, 623 111

Abstract:

An apparatus prepares a medical device from a polymeric composition having properties such as increased visibility of the device and the ability to deliver therapeutic and other agents. The device is constructed with additives incorporated into the polymeric structure, such as a material that increases visibility of the device, while still maintaining desired mechanical characteristics such as high radial stiffness, minimized recoil values, and improved flexibility. The device can assume a wide range of geometries that are adaptable to various loading conditions In order to include performance-enhancing additives to the medical device without affecting mechanical performance, the additives are localized in discrete regions of a polymer structure from which a medical device will be formed. For example, a medical device can be prepared from a polymer form such as a tube containing radiopaque agent localized at its ends or in a desired pattern along the device.

US Patent:

20080102098, May 1, 2008

Filed:

Oct 30, 2006

Appl. No.:

11/589665

Inventors:

Vipul Bhupendra Dave - Hillsborough NJ, US
Chao Chen - Edison NJ, US

International Classification:

A61F 2/02
C08G 63/00

US Classification:

424426, 424423, 525415, 606 76

Abstract:

A medical device is constructed from a polymeric composition having properties such as increased visibility of the device and the ability to deliver therapeutic and other agents. The device is constructed with additives incorporated into the polymeric structure, such as a material that increases visibility of the device, while still maintaining desired mechanical characteristics such as high radial stiffness, minimized recoil values, and improved flexibility. The device can assume a wide range of geometries that are adaptable to various loading conditions In order to include performance-enhancing additives to the medical device without affecting mechanical performance, the additives are localized in discrete regions of a polymer structure from which a medical device will be formed. For example, a medical device can be prepared from a polymer form such as a tube containing radiopaque agent localized at its ends or in a desired pattern along the device.

US Patent:

20080167710, Jul 10, 2008

Filed:

Jan 5, 2007

Appl. No.:

11/620227

Inventors:

Vipul Bhupendra Dave - Hillsborough NJ, US
Chao Chen - Edison NJ, US

International Classification:

A61F 2/06

US Classification:

623 134, 623 142, 623 146

Abstract:

A device is constructed with additives incorporated into its structure, such as a material that increases visibility of the device, while still maintaining desired mechanical characteristics such as high radial stiffness, minimized recoil values, and improved flexibility. The device can assume a wide range of geometries that are adaptable to various loading conditions. In order to include performance-enhancing additives to the medical device without affecting mechanical performance, the additives are localized in discrete regions of a polymer structure from which a medical device will be formed. For example, a medical device can be prepared from a polymer form such as a tube containing radiopaque agent localized at its ends or in a desired pattern along the device. Agent is evenly distributed throughout the device such that, for example, elution of a therapeutic agent will be more precisely controlled.

US Patent:

57698627, Jun 23, 1998

Filed:

Apr 19, 1996

Appl. No.:

8/635448

Inventors:

Gene W. Kammerer - East Brunswick NJ
Bruno Bufalini - Creskill NJ
Royce Frederick - South Bound Brook NJ
Chao Chen - Edison NJ

Assignee:

Ethicon, Inc. - Somerville NJ

International Classification:

A61B 1700

US Classification:

606148

Abstract:

A tube knot applicator for use in endosurgical procedures. The tube knot applicator has an elongated tube member having a distal end and a proximal end, as well as an axial passage therethrough. The tube member has slits for partially collapsing the distal end of the tube as well as a removable plug mounted in the distal end of the tube to prevent the distal end of the tube from collapsing by supporting the distal slitted end. A suture having at least one slip knot and at least one locking knot is mounted in the tube knot applicator with the knot tied about the collapsing distal end of the tube. A sleeve is mounted to the distal end of the tube knot applicator over the suture knot and the distal end.

US Patent:

51430827, Sep 1, 1992

Filed:

Apr 3, 1991

Appl. No.:

7/679893

Inventors:

Richard C. Kindberg - Doylestown PA
Chao Chen - Edison NJ
Lyn Freeman - Flemington NJ
Constance E. Roshdy - New Egypt NJ
Alastair W. Hunter - Bridgewater NJ

Assignee:

Ethicon, Inc. - Somerville NJ

International Classification:

A61B 1000

US Classification:

128749

Abstract:

A medical device for enclosing an internal bodily organ or tissue during surgery comprising a filamentary strand with noose and free end portions, the free end portion enclosed within a cannula; a surgical bag with an opening, the bag attached to the noose portion at the open end of the bag; and a means for pulling the free end portion proximally to reduce the diameter of the noose portion so as to close the open end of the surgical bag.

US Patent:

RE351644, Mar 5, 1996

Filed:

Jul 23, 1993

Appl. No.:

8/097555

Inventors:

Richard C. Kindberg - Doylestown PA
Chao Chen - Edison NJ
Lyn Freeman - Flemington NJ
Constance E. Roshdy - New Egypt NJ
Alastair W. Hunter - Bridgewater NJ

Assignee:

Ethicon, Inc. - Somerville NJ

International Classification:

A61B 1000

US Classification:

128749

Abstract:

A medical device for enclosing an internal bodily organ or tissue during surgery comprising a filamentary strand with noose and free end portions, the free end portion enclosed within a cannula; a surgical bag with an opening, the bag attached to the noose portion at the open end of the bag; and a means for pulling the free end portion proximally to reduce the diameter of the noose portion so as to close the open end of the surgical bag.

US Patent:

54548209, Oct 3, 1995

Filed:

Jul 14, 1993

Appl. No.:

8/092400

Inventors:

Gene W. Kammerer - East Brunswick NJ
Bruno Bufalini - Creskill NJ
Royce Frederick - Sough Bound Brook NJ
Chao Chen - Edison NJ

Assignee:

Ethicon, Inc. - Somerville NJ

International Classification:

A61B 1700

US Classification:

606148

Abstract:

A tube knot applicator for use in endosurgical procedures. The tube knot applicator has an elongated tube member having a distal end and a proximal end, as well as an axial passage therethrough. The tube member has slits for partially collapsing the distal end of the tube as well as a removable plug mounted in the distal end of the tube to prevent the distal end of the tube from collapsing by supporting distal slitted end. A suture having at least one slip knot and at least one locking knot is mounted in the tube knot applicator with the knot tied about the collapsing means. A sleeve is mounted to the distal end of tube knot applicator over the suture knot and the distal end.