Stuart F Macdonald

US Patent:

62103962, Apr 3, 2001

Filed:

Jun 24, 1999

Appl. No.:

9/339499

Inventors:

Stuart R. MacDonald - Danvers MA
Zelda M. Anastos - Brighton MA
Albert H. Dunfee - Byfield MA
Michael S. Noone - Londonderry NH

Assignee:

Medtronic, Inc. - Minneapolis MN

International Classification:

A61M 25098

US Classification:

604529

Abstract:

The present invention comprises a tubular catheter shaft defining at least one catheter shaft lumen and a radiopaque band made of a polymeric material loaded with a radiopaque material of greater than 40% by weight, suitable for visualization under fluoroscopy in catheters in the range of 3 French to 5 French. The distal soft tip is formed of a relatively flexible polymeric material, loaded with radiopaque material which is less radiopaque than the radiopaque band. The radiopaque band's proximal end adjoins the distal end of the catheter shaft. The radiopaque band's distal end adjoins the proximal end of the distal tip to form an attachment junction. A tubular sleeve fits coaxially over the radiopaque band, the distal end of the catheter shaft and the proximal end of the distal soft tip. The tubular sleeve adheres the catheter shaft distal end to the proximal end of the radiopaque band and adheres the soft tip proximal end to the distal end of the radiopaque band thereby aligning the soft tip lumen, the radiopaque band lumen, and the catheter shaft lumen. The proximal end of the tubular sleeve is bonded to a distal portion of the catheter shaft.

US Patent:

20220330975, Oct 20, 2022

Filed:

Mar 31, 2022

Appl. No.:

17/709869

Inventors:

- Andover MA, US
Stuart Macdonald - Andover MA, US
Koosha Rafiee - Andover MA, US

International Classification:

A61B 17/34

Abstract:

The present disclosure relates to novel and advantageous systems and methods for deploying a surgical tool or guidewire. Particularly, the present disclosure relates to novel and advantageous systems and methods for deploying a surgical tool for use in changing the shape of portions of luminal systems. More particularly, the present disclosure relates to novel and advantageous systems and methods including an access catheter to direct an implement, such as a guide wire, off axis into a wall of a vessel or a wall of a tissue structure.

US Patent:

20220296865, Sep 22, 2022

Filed:

Apr 11, 2022

Appl. No.:

17/717389

Inventors:

- Andover MA, US
Stuart MacDonald - Andover MA, US
Koosha Rafiee - Andover MA, US
Mai Le Diep - Andover MA, US

International Classification:

A61M 27/00
A61F 2/07
A61F 2/958
A61F 2/06

Abstract:

The disclosure provides various embodiments of prostheses and delivery systems to permit an interventional cardiologist to create shunts between various blood vessels. Moreover, the disclosed shunts can be used to shunt between various hollow organs, as set forth in the present disclosure.

US Patent:

20210315558, Oct 14, 2021

Filed:

Jun 23, 2021

Appl. No.:

17/356453

Inventors:

- Andover MA, US
Stuart MacDonald - Andover MA, US
Rany Busold - Andover MA, US
Koosha Rafiee - Andover MA, US

International Classification:

A61B 17/00
A61B 17/12
A61F 2/00
A61F 2/88
A61F 2/90

Abstract:

The present disclosure provides a variety of prostheses, delivery systems and techniques to facilitate closure of transvascular or transcameral access ports. Various embodiments of prostheses are provided including a plurality of radially expandable discs that can be filled with material to facilitate coagulation and to reduce or stop leakage from punctures in vessel walls.

US Patent:

20210137579, May 13, 2021

Filed:

Nov 1, 2020

Appl. No.:

17/086431

Inventors:

Nasser Rafiee - andover MA, US
Stuart Macdonald - andover MA, US
Rany Busold - andover MA, US
Alexis Balcom - andover MA, US
Morgan House - andover MA, US

International Classification:

A61B 18/08
A61B 18/14
A61B 90/00

Abstract:

The disclosure provides various embodiments of catheters having articulable ends that can be used for various procedures. Embodiments of methods are also provided that can be performed with catheters in accordance with the present disclosure.

US Patent:

20210045879, Feb 18, 2021

Filed:

Oct 31, 2020

Appl. No.:

17/086360

Inventors:

Nasser Rafiee - andover MA, US
Stuart Macdonald - andover MA, US
koosha rafiee - andover MA, US

International Classification:

A61F 2/24

Abstract:

Devices and methods are disclosed for the treatment or repair of regurgitant cardiac valves, such as a mitral valve and/or tricuspid valve. An illustrative annuloplasty device can be placed in the coronary sinus to reshape the mitral valve and reduce mitral valve regurgitation as well as tricuspid regurgitation. The disclosure also provides improved techniques for cardiac pacing.

US Patent:

20200383668, Dec 10, 2020

Filed:

Aug 17, 2020

Appl. No.:

16/995330

Inventors:

Nasser Rafiee - Andover MA, US
Stuart MacDonald - Andover MA, US
Ozgur Kocaturk - andover MA, US

International Classification:

A61B 17/00
A61F 2/24

Abstract:

In accordance with the disclosure, devices are provided for closing an opening in tissue. The devices include a proximal portion configured and arranged to occlude the tissue opening, and a distal anchor portion configured and arranged to anchor the device in the tissue opening. If desired, the distal anchor portion can be moved proximally or distally with respect to the proximal portion during implantation. The proximal portion can be configured and arranged to fit into a left atrial appendage of a patient, and further wherein the distal anchor portion is configured and arranged to extend into the left atrial appendage.

US Patent:

20190298521, Oct 3, 2019

Filed:

Jan 31, 2019

Appl. No.:

16/264556

Inventors:

- Andover MA, US
Stuart MacDonald - Andover MA, US
Koosha Rafiee - Andover MA, US

International Classification:

A61F 2/24

Abstract:

Devices and methods are disclosed for the treatment or repair of regurgitant cardiac valves, such as a mitral valve. An illustrative annuloplasty device can be placed in the coronary sinus to reshape the mitral valve and reduce mitral valve regurgitation. The disclosure also provides improved techniques for cardiac pacing.