Granted Patent
B2
US 12,491,346 · App. 18/518,122 · Granted Dec 9, 2025
Transseptal puncture apparatus and method for using the same
Inventors:
Paul Kurth (Santa Barbara, CA); Andrew Armour (Swarthmore, PA); Andrzej J. Chanduszko (Weymouth, MA); Carol A. Devellian (Topsfield, MA)
Assignee:
Boston Scientific Medical Device Limited
A61M25/09A61B17/0057A61B17/3468A61M25/09041A61B2017/00243A61B2017/00247A61B2017/00575A61B2017/00597A61B2017/00606A61B2017/00623A61B2017/00991A61B2017/06095A61B2017/22047A61M2025/0177
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Abstract
Devices and methods for performing a transseptal puncture procedure using a device which includes either an untapered or tapered blunt end cannula disposed in an introducer carrying a sharp guidewire disposed longitudinally through the lumen of the blunt cannula, and a blunt end dilator wherein the guidewire is flexible and has an atraumatic shape at its tip. The cannula gives the more flexible introducer a defined shape and steerabilty allowing an ordinarily skilled physician to easily access a selected location on the septal wall of the heart for transseptal puncture and introducer placement thereacross without employing an exposed sharp end needle during the procedure.
Claims (28)
1 . A transseptal puncture device for puncturing the atrial septum of a patient's heart, the puncture device comprising:
an introducer having a lumen extending from a proximal end to a distal end, the introducer configured for accessing a right atrium of the patient's heart and for placing adjacent the atrial septum of the patient's heart; and
a puncture wire configured for advancing within the lumen of the introducer and extending past the distal end of the introducer, the puncture wire including a proximal portion, an intermediate portion and a distal portion having a sharp tip;
wherein a first stiffness of the intermediate portion and a second stiffness of the distal portion are less stiff than a third stiffness of the proximal portion; and
wherein the second stiffness of the distal portion is configured such that the sharp tip will penetrate the atrial septum when the distal portion substantially resides within the introducer and not penetrate the patient's heart when the distal portion resides substantially outside of the introducer.
2 . The puncture device of claim 1 wherein the distal portion includes a curvature.
3 . The puncture device of claim 1 wherein the introducer has a tapered distal portion.
4 . The puncture device of claim 1 wherein the introducer is configured for intravascularly accessing a right atrium of the patient's heart through a femoral vein.
5 . The puncture device of claim 1 wherein the introducer is configured for intravascularly accessing a right atrium of the patient's heart through a superior vena cava.
6 . The puncture device of claim 1 wherein the distal portion of the puncture wire is prebiased to assume an atraumatic shape when advanced beyond the distal end of the introducer.
7 . The puncture device of claim 6 wherein the atraumatic shape is a hook shape.
8 . The puncture device of claim 6 wherein the atraumatic shape includes a first curve of about 180 degrees, such that in the curved configuration the sharp tip is facing substantially toward the proximal portion of the puncture wire.
9 . The puncture device of claim 8 wherein the atraumatic shape includes a second curve disposed distal to the first curve.
10 . The puncture device of claim 1 where in the introducer has a blunt distal end configured to tent a wall of the atrial septum.
11 . The puncture device of claim 1 wherein the intermediate portion comprises a waist portion.
12 . The puncture device of claim 11 wherein the waist portion has a diameter less than a diameter of the proximal portion.
13 . A transseptal puncture device for puncturing the atrial septum of a patient's heart, the puncture device comprising:
an introducer having a lumen extending from a proximal end to a distal end, the introducer configured for accessing a right atrium of the patient's heart and for placing adjacent the atrial septum of the patient's heart; and
a puncture wire configured for advancing within the lumen of the introducer and extending past the distal end of the introducer, the puncture wire including a proximal portion, an intermediate portion and a distal portion having a sharp tip;
wherein a first stiffness of the intermediate portion and a second stiffness of the distal portion are less stiff than a third stiffness of the proximal portion;
wherein the second stiffness of the distal portion is configured such that the sharp tip will penetrate the atrial septum when the distal portion substantially resides within the introducer and not penetrate the patient's heart when the distal portion resides substantially outside of the introducer; and
wherein the distal portion of the puncture wire is prebiased to assume an atraumatic shape when advanced beyond the distal end of the introducer.
14 . The puncture device of claim 13 wherein the atraumatic shape is a hook shape.
15 . The puncture device of claim 13 wherein the atraumatic shape includes a first curve of about 180 degrees, such that in the curved configuration the sharp tip is facing substantially toward the proximal portion of the puncture wire.
16 . The puncture device of claim 15 wherein the atraumatic shape includes a second curve disposed distal to the first curve.
17 . The puncture device of claim 13 where in the introducer has a blunt distal end configured to tent a wall of the atrial septum.
18 . The puncture device of claim 13 wherein the intermediate portion comprises a waist portion.
19 . The puncture device of claim 18 wherein the waist portion has a diameter less than a diameter of the proximal portion.
Assignments (4)
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Nov 27, 2023
From: CHANDUSZKO, ANDRZEJ J.; DEVELLIAN, CAROL A.
To: PRESSURE MEDICAL SUPPLIES INC.
Reel/Frame 065671/0370 →
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Nov 27, 2023
From: KURTH, PAUL; ARMOUR, ANDREW
To: PRESSURE PRODUCTS MEDICAL SUPPLIES INC.
Reel/Frame 065671/0463 →
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Nov 27, 2023
From: PRESSURE PRODUCTS MEDICAL SUPPLIES, INC.
To: BAYLIS MEDICAL COMPANY INC.
Reel/Frame 065671/0562 →
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Nov 27, 2023
From: BAYLIS MEDICAL COMPANY INC.
To: BOSTON SCIENTIFIC MEDICAL DEVICE LIMITED
Reel/Frame 065678/0562 →
Continuity (5)
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