CN-114568015-B - Puncture needle

Abstract

The introducer needle may include an elongate portion, a piercing member associated with a distal end of the elongate portion, and a spacer associated with a distal portion of the elongate portion, wherein the spacer may be configured to contact a wall of the delivery catheter lumen to prevent contact between the piercing member and the wall. The penetrating needle may include an elongate portion and a penetrating member associated with a distal end of the elongate portion, wherein the penetrating member includes a blade edge on a distal edge, and wherein the penetrating member is configured to be advanced through a lumen of a delivery catheter without the blade edge jamming against a wall of the lumen.

Inventors

• D.J. Murray
• LG Miles
• TRAN DON H.
• VALDEZ MICHAEL G.
• A.C.Mei

Assignees

• 爱德华兹生命科学公司
• 爱德华兹生命科学公司

Dates

Publication Date

20260421

Application Date

20200811

Priority Date

20190822

Claims (20)

1. 1. A lancing system, comprising: a needle configured to be slidably advanced through a delivery catheter lumen, the needle comprising: an elongated portion, and A penetrating member associated with a distal end of the elongated portion, the penetrating member configured to penetrate tissue, and A spacer associated with a distal portion of the elongate portion; Wherein the spacer is configured to contact a wall of the delivery catheter lumen to prevent contact between the piercing member and the wall when the piercing member is advanced through a bend in the delivery catheter lumen, Wherein the spacer is integrally formed with or configured to be coupled to the lancet, and Wherein the spacer has a width that is predetermined based at least in part on a distance between the spacer and a distal end of the penetrating member to prevent contact between the distal end of the penetrating member and a wall of the delivery catheter lumen.
2. 2. The system of claim 1, wherein the spacer comprises a predetermined lateral dimension and a predetermined longitudinal dimension configured to prevent contact between the distal end of the penetrating member and the wall.
3. 3. The system of claim 1 or 2, wherein the spacer comprises a distal end, a proximal end, and a lateral surface between the distal end and the proximal end, wherein the lateral surface is a predetermined lateral distance from a distal portion of the elongate portion, at least one of the lateral surface and the distal end being configured to contact a wall of the delivery catheter lumen to prevent contact between the distal end of the penetrating member and the wall.
4. 4. The system of claim 3, wherein the lateral surface comprises a concave curvilinear surface configured to contact a wall of the delivery catheter lumen.
5. 5. The system of claim 3, wherein the lateral surface comprises a convex curved surface configured to contact a wall of the delivery catheter lumen.
6. 6. The system of claim 3, wherein the lateral surface comprises a surface parallel to a longitudinal axis of the needle and configured to contact a wall of the delivery catheter lumen.
7. 7. The system of claim 1 or 2, wherein a longitudinal cross-section of the spacer comprises at least one of a circular segment, an elliptical segment, and a teardrop shaped segment, wherein a plane along which the longitudinal cross-section extends transversely from a distal portion of the elongate portion, along a longitudinal axis of the needle.
8. 8. The system of any one of claims 1-2 and 4-6, wherein the spacer is symmetrical about an axis collinear with a longitudinal axis of the needle.
9. 9. The system of any of claims 1-2 and 4-6, wherein the spacer is asymmetric about an axis collinear with the longitudinal axis of the needle.
10. 10. The system of claim 9, wherein the spacer extends partially circumferentially around a distal portion of the elongate portion.
11. 11. The system of claim 9, wherein the spacer is positioned circumferentially around a distal portion of the elongate portion.
12. 12. The system of claim 11, wherein the spacer comprises a ring shape.
13. 13. The system of claim 12, wherein the annular lateral surface comprises a concave curvature.
14. 14. The system of claim 12, wherein the annular lateral surface comprises a convex curvature.
15. 15. The system of claim 12, wherein the annular lateral surface is parallel to an axis collinear with a longitudinal axis of the needle.
16. 16. The system of any of claims 1-2, 4-6, and 10-11, wherein the spacer comprises a plurality of distinct portions positioned about a distal portion of the elongate portion.
17. 17. The system of claim 16, wherein the spacer comprises a plurality of lobes positioned circumferentially around the distal portion.
18. 18. The system of claim 16, wherein the spacer comprises a plurality of plates extending circumferentially around a distal portion of the elongate portion.
19. 19. The system of any one of claims 1-2, 4-6, 10-15, and 17-18, wherein the spacer is adjacent to the piercing member.
20. 20. The system of any one of claims 1-2, 4-6, 10-15, and 17-18, wherein the spacer is at a predetermined distance proximal to the piercing member.

Description

Puncture needle Cross Reference to Related Applications The present application claims the benefit of U.S. provisional patent application No. 62/890,528 entitled "punture NEEDLES," filed 8/22 in 2019, the disclosure of which is hereby expressly incorporated by reference in its entirety for all purposes. Technical Field The present disclosure relates generally to the field of transcatheter delivery of medical implant devices and/or therapies. Background The puncture needle may be used in a minimally invasive transcatheter approach to achieve delivery of the medical implant device and/or therapy to the target tissue site. Forming openings in tissue of internal vessels, passages, organs, and/or chambers to allow delivery of medical implant devices and/or therapies thereto may require catheter delivery of a penetrating needle to a target tissue site. Disclosure of Invention Described herein are one or more devices, systems, and methods related to a lancet for use in a minimally invasive transcatheter approach, wherein the lancet can be advanced through a delivery catheter lumen without being stuck within the lumen, including through one or more bends in the delivery catheter lumen. For purposes of summarizing the present disclosure, certain aspects, advantages, and novel features are described herein. It is to be understood that not necessarily all such advantages may be achieved in accordance with any particular embodiment. Thus, the disclosed embodiments may be embodied or carried out in a manner that achieves or optimizes one advantage or group of advantages as taught herein without necessarily achieving other advantages as may be taught or suggested herein. In some embodiments, the puncture system can include a puncture needle configured to be slidably advanced through the delivery catheter lumen, the puncture needle including an elongate portion, and a puncture member associated with a distal end of the elongate portion, the puncture member configured to puncture tissue. A spacer may be associated with the distal portion of the elongate portion, wherein the spacer may be configured to contact a wall of the delivery catheter lumen to prevent contact between the penetrating member and the wall as the penetrating member is advanced through a bend in the delivery catheter lumen. In some embodiments, the spacer includes a predetermined transverse (lateral) dimension and a predetermined longitudinal dimension configured to prevent contact between the distal end of the penetrating member and the wall. In some embodiments, the spacer includes a distal end, a proximal end, and a lateral surface between the distal end and the proximal end, wherein the lateral surface is a predetermined lateral distance from the distal portion of the elongate portion, at least one of the lateral surface and the distal end being configured to contact a wall of the delivery catheter lumen to prevent contact between the distal end of the penetrating member and the wall. In some embodiments, the lateral surface comprises a concave curvilinear surface configured to contact a wall of the delivery catheter lumen. In some embodiments, the lateral surface comprises a convex curved surface configured to contact a wall of the delivery catheter lumen. In some embodiments, the lateral surface comprises a surface parallel to the longitudinal axis of the needle, the surface configured to contact a wall of the delivery catheter lumen. In some embodiments, the longitudinal cross-section of the spacer comprises at least one of a circular segment, an elliptical segment, and a teardrop shaped segment, wherein the plane along which the longitudinal cross-section extends transversely from the distal portion of the elongate portion, along the longitudinal axis of the needle. In some embodiments, the spacer is symmetrical about an axis collinear with the longitudinal axis of the needle. In some embodiments, the spacer is asymmetric about an axis collinear with the longitudinal axis of the needle. In some embodiments, the spacer extends partially circumferentially around the distal portion of the elongate portion. In some embodiments, the spacer is positioned circumferentially around the distal portion of the elongate portion. In some embodiments, the spacer comprises a ring shape (RING SHAPE). In some embodiments, the annular lateral surface includes a concave curvature. In some embodiments, the annular lateral surface includes a convex curvature. In some embodiments, the annular transverse surface is parallel to an axis collinear with the longitudinal axis of the needle. In some embodiments, the spacer includes a plurality of distinct portions positioned about the distal portion of the elongate portion. In some embodiments, the spacer includes a plurality of lobes (lobes) positioned circumferentially around the distal portion. In some embodiments, the spacer includes a plurality of panels (panels) extending circumferentially around the distal portion of th