Transcatheter delivery apparatus

Patent metadata

Field	Value
Publication number	US-2023277809-A1
Application number	US-202318315498-A
Country	US
Kind code	A1
Filing date	May 11, 2023
Priority date	Nov 11, 2020
Publication date	Sep 7, 2023
Grant date	—

Abstract

Embodiments of a nosecone for a transcatheter delivery apparatus are disclosed. The nosecone can include a distal portion and a proximal portion. A longitudinal axis can extend from a distal end of the distal portion to a proximal end of the proximal portion. The proximal portion can have a shoulder region adjacent the distal portion of the nosecone and a body region proximal to the shoulder region. An outer surface of the nosecone can have a cross-sectional profile taken along the longitudinal axis of the nosecone. The cross-sectional profile of the body region can have a convex shape when viewed from a centroid of the body region.

First claim

1 . An apparatus for a transcatheter procedure, the apparatus comprising:
a shaft having a proximal end, a distal end, and a longitudinal axis extending from the proximal end to the distal end; and a nosecone connected to the distal end of the shaft and comprising a distal portion and a proximal portion, wherein an outer surface of the nosecone has a cross-sectional profile taken along the longitudinal axis of the shaft, wherein the cross-sectional profile of the proximal portion comprises a body region, wherein a slope of the body region progressively increases from a distal end of the body region to a proximal end of the body region.

2 . The apparatus of claim 1 , wherein the body region has a convex shape relative to a centroid of the body region.

3 . The apparatus of claim 1 , wherein the cross-sectional profile of the proximal portion further comprises a connection region located between body region and the distal end of the shaft.

4 . The apparatus of claim 3 , wherein the cross-sectional profile of the proximal portion in the connection region has a concave shape relative to a centroid of the connection region.

5 . The apparatus of claim 3 , wherein the cross-sectional profile of the proximal portion in the connection region linearly connects the proximal end of the body region to the distal end of the shaft.

6 . The apparatus of claim 1 , wherein the cross-sectional profile of the proximal portion further comprises a shoulder region located between the body region and the distal portion of the nosecone.

7 . The apparatus of claim 6 , wherein the shoulder region comprises a peak portion connected to the distal portion of the nosecone and a valley portion connected to the distal end of the body region, wherein a diameter of the shoulder region progressively decreases from the peak portion to the valley portion.

8 . The apparatus of claim 7 , wherein the cross-sectional profile of the proximal portion in the valley portion has a concave shape relative to a centroid of the shoulder region and the cross-sectional profile of the proximal portion in the peak portion has a convex shape relative to the centroid of the shoulder region.

9 . An apparatus for a transcatheter procedure, the apparatus comprising:
a shaft having a proximal end, a distal end, and a longitudinal axis extending from the proximal end to the distal end; and a nosecone connected to the distal end of the shaft and comprising a distal portion and a proximal portion, wherein the proximal portion of the nosecone comprises a shoulder region adjacent the distal portion of the nosecone, a connection region connected to the distal end of the shaft, and a body region located between the shoulder region and the connection region, wherein an outer surface of the nosecone has a cross-sectional profile taken along the longitudinal axis of the shaft, wherein the cross-sectional profile of the body region comprises a first section having a first slope, a second section having a second slope, and a third section having a third slope, the first section adjacent the connection region, the third section adjacent the shoulder region, and the second section located between the first section and the second section, and wherein the first slope is greater than the second slope and the third slope, the second slope is greater than the third slope.

10 . The apparatus of claim 9 , wherein the distal portion of the nosecone tapers radially outwardly from a distal end of the distal portion to a proximal end of the distal portion, and the proximal portion of the nosecone tapers radially inwardly from the proximal end of the distal portion to a proximal end of the proximal portion, wherein the proximal end of the distal portion has a first diameter, and a distal end of the body region has a second diameter.

11 . The apparatus of claim 10 , wherein a difference between the first diameter and the second diameter defines a shoulder depth, wherein the shoulder depth ranges from about 0.1 mm to about 2.5 mm.

12 . The apparatus of claim 11 , wherein a ratio of the shoulder depth to an axial length of the shoulder region ranges from about 0.02 to about 2.50.

13 . The apparatus of claim 10 , wherein a ratio of the second diameter to the first diameter ranges from about 0.50 to about 0.96.

14 . The apparatus of claim 9 , wherein a ratio of an axial length of the body region to an axial length of the distal portion ranges from about 0.02 to about 0.95.

15 . The apparatus of claim 9 , wherein the cross-sectional profile of the body region has a convex shape relative to a centroid of the body region.

16 . The apparatus of claim 9 , wherein the cross-sectional profile of the shoulder region has a concave shape relative to a centroid of the shoulder region.

17 . The apparatus of claim 9 , wherein the shoulder region comprises a peak portion connected to the distal portion of the nosecone and a valley portion connected to the body region, wherein a slope of the shoulder region ranges from about 0 degrees to about 65 degrees.

18 . The apparatus of claim 9 , wherein a slope of the proximal portion varies continuously without a step change.

19 . A nosecone for a transcatheter delivery apparatus, the nosecone comprising:
a distal portion and a proximal portion; and a longitudinal axis extending from a distal end of the distal portion to a proximal end of the proximal portion, wherein the proximal portion comprises a shoulder region adjacent the distal portion of the nosecone and a body region proximal to the shoulder region, wherein an outer surface of the nosecone has a cross-sectional profile taken along the longitudinal axis of the nosecone, wherein the cross-sectional profile of the body region has a convex shape when viewed from a centroid of the body region.

20 . The nosecone of claim 19 , wherein the cross-sectional profile of the body region comprises at least a section, wherein a tangent line at the section does not intercept the cross-sectional profile of the shoulder region.

Assignees

• Edwards Lifesciences Corp

Inventors

• Desrosiers John J

Classifications

• A61F2/2436 Primary

  Deployment by retracting a sheath · CPC title

• A61F2250/0039

  differing in diameter · CPC title

• A61M25/01 Primary

  Introducing, guiding, advancing, emplacing or holding catheters (A61M25/10 takes precedence) · CPC title

• A61M25/0069

  Tip not integral with tube · CPC title

• A61M2025/09183

  having tools at the distal tip · CPC title