Suture Passer Needle

Abstract

This invention relates to surgical suturing devices and methods by which suture may be passed through tissue during surgery, and, more particularly, to an improved blade of a suture passer needle. The suture passer needle includes a first side, a second side, and a blade disposed at an end of the needle. The blade has a first edge extending from the first side of the needle and a second edge extending from the second side of the needle, which converge to a tip of the blade. A notch is disposed in the blade and forms an opening in the first side of the blade. The blade also has one or more cutout portions distal and/or proximal the notch, which minimize the stress and strain placed on the blade. The suture passer needle can be incorporated into surgical suturing devices or suture passer devices to pass suture through a tissue body.

Claims

1. A suture passer needle, comprising: a first side, a second side, and a blade disposed at a first end of the needle; the blade having a first edge extending from the first side and a second edge extending from the second side, which converge at a tip of the blade; a notch disposed in the blade, forming an opening in the first side of the blade; and a first cutout portion positioned in the blade.

2. The needle of claim 1, wherein the cutout portion is completely surrounded by a body of the blade.

3. The needle of claim 1, wherein the first cutout portion is positioned distally to the notch or positioned proximally to the notch.

4. The needle of claim 3, further comprising a second cutout portion, wherein the second portion is positioned distally to the notch when the first cutout portion is positioned proximally to the notch, and wherein the second portion is positioned proximally to the notch when the first cutout portion is positioned distally to the notch.

5. The needle of claim 1, wherein the first edge and the second edge are linear and equal in length.

6. The needle of claim 1, wherein the first edge and the second edge extend to the tip of the blade at equal angles from the first side and the second side, respectively.

7. The needle of claim 1, wherein the first edge of the blade and the first side of the needle converge at a point distal with respect to the notch.

8. A suture passer needle, comprising: a first side, a second side, and a blade disposed at a first end of the needle; the blade having a curved first edge extending from the first side and a curved second edge extending from the second side, which converge to a tip of the blade; a notch disposed in the blade, forming an opening in the first side of the blade; and a distal end of the notch, which converges with the curved first edge.

9. The needle of claim 8, further comprising a proximal end of the notch aligned along the first side of the blade with the distal end of the notch.

10. The needle of claim 9, wherein the proximal end of the notch and the distal end of the notch are equidistant from a central axis along the needle.

11. The needle of claim 8, wherein the radius of curvature of the curved first edge is equal to the radius of the curvature of the curved second edge.

12. The needle of claim 8, further comprising a cutout portion in the blade positioned distally to the notch.

13. The needle of claim 8, further comprising a cutout portion in the blade positioned proximally to the notch.

14. The needle of claim 8, further comprising at least one cutout portion in the blade positioned proximally to the notch, and at least one cutout portion in the blade positioned distally to the notch.

15. A suturing system for passing suture through a tissue body, comprising: a jaw member disposed at a distal end of the suturing system, the first jaw member having an aperture extending therethrough; a needle having a first side, a second side, and a blade disposed at an end of the needle, the blade having a first edge extending from the first side and a second edge extending from the second side, which converge to a tip of the blade, a notch disposed in the blade, forming an opening in the first side of the blade, and a cutout portion positioned in the blade, the needle extending through the aperture and configured to carry a portion of suture through the aperture; a capture feature formed on the distal end of the suturing system; wherein the suturing system is actuatable by a single actuation of an actuation mechanism to move the needle through the tissue body and the aperture, and to actuate the capture feature to firmly and releasably grip the portion of suture after the portion of suture has been carried by the needle through the tissue body and the aperture.

16. The system of claim 15, wherein the cutout portion is positioned distally to the notch or positioned proximally to the notch.

17. The system of claim 15, wherein the first edge and the second edge are linear and equal in length.

18. The system of claim 15, wherein a proximal end of the notch and a distal end of the notch are equidistant from a central axis along the needle.

19. The system of claim 15, wherein the first edge and the second edge are curved,

20. The system of claim 19, wherein a radius of curvature of the first edge is equal to a radius of curvature of the second edge.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be more fully understood and appreciated by reading the following Detailed Description in conjunction with the accompanying drawings. The accompanying drawings illustrate only typical embodiments of the disclosed subject matter and are therefore not to be considered limiting of its scope, for the disclosed subject matter may admit to other equally effective embodiments.

[0015] Reference is now made briefly to the accompanying drawings, in which:

[0016] FIG. 1A is a schematic representation of an alternative conventional blade of an alternative surgical suturing device;

[0017] FIG. 1B is a schematic representation of the alternative conventional blade in a partially deployed position through a jaw/window of the alternative surgical suturing device;

[0018] FIG. 1C is a schematic representation of the SPECTRUM® AUTOPASS™ suture passer;

[0019] FIG. 2A is a schematic side view representation of an improved blade of a surgical suturing device according to an embodiment;

[0020] FIG. 2B is a schematic side view representation of an improved blade of a surgical suturing device according to an embodiment;

[0021] FIG. 3A is a schematic side view representation of an improved blade of a surgical suturing device according to an alternative embodiment; and

[0022] FIG. 3B is a magnified schematic representation of the embodiment shown in FIG. 3A.

[0023] Where applicable, like reference characters designate identical or corresponding components and units throughout the several views, which are not to scale unless otherwise indicated. Moreover, the embodiments disclosed herein may include elements that appear in one or more of the several views or in combinations of the several views.

DETAILED DESCRIPTION OF EMBODIMENTS

[0024] Embodiments of the improved blade 100 of a needle, described with respect to FIGS. 2A and 2B herein, and an improved blade 300 of a needle, described with respect to FIGS. 3A and 3B, are designed to be a part of and be used in conjunction with surgical suturing devices (or suture passer devices) such as the SPECTRUM® AUTOPASS™ suture passer (as should be understood and appreciated by a person of ordinary skill in the art in conjunction with a review of this disclosure), the structure and design of which is incorporated by reference herein in its entirety. For example, the SPECTRUM® AUTOPASS™ suture passer 400 shown in FIG. 1C includes, generally, a jaw member 402 at a distal end of the suture passer 400, a needle 408 which can be retracted and extended through the jaw member 402 relative to the distal end of the suture passer 400, and a capture feature 404 on the distal end of the suture passer 400, which is actuatable to releasably grip and retain suture. Upon a single actuation of an actuation mechanism 406, the needle 408 moves from a retracted position to an extended position through the aperture of the jaw member 402 and the tissue body. Certain aspects such as the proximal and distal “cutout” portions can also be incorporated into blade 256 as described and shown in U.S. Pat. No. 8,177,796 (as should be understood and appreciated by a person of ordinary skill in the art in conjunction with review of this disclosure), which is incorporated by reference herein in its entirety. The descriptions of the positioning and use of needle 250 and blade 256 in U.S. Pat. No. 8,177,796 can generally apply to the embodiments of the improved blade portions of a needle described herein, and only the improved structure of the embodiments of the improved blade and resultant functionality will be additionally described herein.

[0025] Referring to FIG. 2A, in one embodiment, a schematic side view representation of an improved blade 100 of needle 250 (shown and described in U.S. Pat. No. 8,177,796) is shown. The blade 100 can include, but is not limited to, a notch 102, and a plurality of “cutout” portions—distal cutout portion 104 and proximal cutout portion 106 (“distal” and “proximal” with respect to the notch 102). The cutout portions (104, 106) can be formed by first forming the blade 100 and then removing material from the blade 100, or the blade 100 with the cutout portions (104, 106) can be formed in the first instance per a molding procedure (as should be understood by a person of skill in the art in conjunction with a review of this disclosure). The actual geometry and size of the region or regions of removed material may vary, and it can be optimized based on application and the geometry of the device it interacts with (as should be understood by a person of skill in the art in conjunction with a review of this disclosure). Blade 100 is also shown with a centered point 258′, as opposed to an offset point 258 of blade 256, and does not have a side cutout (although, Blade 100 can include an offset point). Blade 100 (and blade 300, described below) can be made from any material with sufficient ability to bend at an angle within the suture passer (as described herein), and with enough stiffness to pierce and be pushed through tissue (as should be appreciated by a person of skill in the art in conjunction with a review of this disclosure) including steel, plastics, or other shape memory or super-elastic materials. In a particular example, blade 100 (and blade 300) can be made from nitinol (a nickel-titanium alloy with shape memory and super-elastic properties).

[0026] Referring to FIG. 2B, in another embodiment, a schematic side view representation of an improved blade 100 of needle 250 is shown. The blade 100 shown in FIG. 2B includes only a distal cutout portion 104. Alternatively, blade 100 could have only a proximal cutout portion 106, or a plurality of proximal cutout portions 106 and/or a plurality of distal cutout portions 104.

[0027] Providing the cutout portions (104, 106) on the interior of the blade 100 without disrupting the outer surface, as opposed to the blade shown in U.S. Pat. No. 8,177,796, has the particular advantage of not changing the primary contact surfaces that interact with the surgical suturing device. Removing material from the outer edges can cause the needle to deflect side-to-side in the surgical suturing device, to catch on surfaces of the device and get stuck/jammed, or to be deflected by tissue when it is used with the device.

[0028] In both FIGS. 2A and 2B, the notch 102 is formed through a first side 108 of the blade 100. The tip of the blade 100 has a first edge 110 that converges with the first side 108 at a point (P). Similarly, the tip of the blade 100 has a second edge 114 that converges with a second side 112 of the blade 100. As depicted in the embodiment shown in FIGS. 2A-2B, the first side 108 of the blade 100 converges with the first edge 110 of the tip of blade 100 at a point (P) distal with respect to the notch 102.

[0029] Referring now to FIGS. 3A-3B, there are shown schematic representations of an alternate embodiment of a blade 300 of needle 250. Similar to the embodiments shown in FIGS. 2A-2B, the blade 300 comprises a first side 308, which is opposite a second side 312 of the blade 300 and comprises a notch 302 having an opening for receiving suture material. A first edge 310 extends from the tip of the blade 300 to a distal end (T) of the first side 308 of the blade 300. Similarly, a second edge 314 extends from the tip of the blade 300 to a distal end (S) of the second side 312 of the blade 300. In the embodiment shown in FIG. 3A, the first edge 310 can be non-linear and include a radius of the curvature that can be equivalent to a radius of the curvature of the second edge 314.

[0030] As previously discussed, the distal ends (S, T) are located opposite each other on their respective sides of the blade 300. The notch 302 on the first side 308 of the blade 300 is positioned proximal to the distal end (T) of the first side 308 of the blade 300 and extends to the distal end (T) of the first side 308 of the blade 300. The notch 302 also extends to a proximal end (R) positioned on the first side 308 of the blade 300 proximal to the opening of the notch 302. When viewed along an axis extending from a proximal end to a distal end of the blade 300 in a direction toward the needle tip, proximal end (R) and distal end (T) are aligned in that direction along the first side 308 of the blade 300. Stated differently, distal end (T) and proximal end (R) extend the same distance in a perpendicular direction from a central longitudinal axis extending along the length of the blade 300. Cutout portions (104, 106) as shown in FIGS. 2A-2B can be incorporated into the blade 300 shown in FIGS. 3A-3B (as should be understood and appreciated by a person of ordinary skill of the art in conjunction with a review of this disclosure).

[0031] While embodiments of the present invention have been particularly shown and described with reference to certain exemplary embodiments, it will be understood by one skilled in the art that various changes in detail may be effected therein without departing from the spirit and scope of the invention as defined by claims that can be supported by the written description and drawings. Further, where exemplary embodiments are described with reference to a certain number of elements it will be understood that the exemplary embodiments can be practiced utilizing either less than or more than the certain number of elements.