阅读说明：本技术 一种吻合钉及吻合器 (Anastomosis nail and anastomat ) 是由 李学军 赵博 高轶明 于 2019-09-30 设计创作，主要内容包括：本发明公开了一种吻合钉,包括钉冠、第一钉腿和第二钉腿,所述第一钉腿和第二钉腿分设于所述钉冠的两端且同侧延伸,所述第一钉腿和第二钉腿的末端均成型有钉尖,所述第一钉腿的所述钉尖与所述第二钉腿的所述钉尖拥有相同的外轮廓线且关于所述吻合钉的纵向中心轴线轴对称,其特征在于：所述钉尖具有至少一个外斜面,所述外斜面与第一钉腿上部的内侧面的法平面的夹角非180°以形成折线尖型或者三棱锥或者外围刀刃结构。特定的钉尖设计结构使得该吻合钉具有更多刀口数量,增加了钉入人体组织的锋利程度,吻合效果较好。(The invention discloses an anastomosis nail, which comprises a nail crown, a first nail leg and a second nail leg, wherein the first nail leg and the second nail leg are respectively arranged at two ends of the nail crown and extend at the same side, nail tips are formed at the tail ends of the first nail leg and the second nail leg, the nail tips of the first nail leg and the nail tips of the second nail leg have the same outer contour line and are axisymmetric about a longitudinal central axis of the anastomosis nail, and the anastomosis nail is characterized in that: the spike tip is provided with at least one outer inclined surface, and the included angle between the outer inclined surface and the normal plane of the inner side surface of the upper part of the first spike leg is not 180 degrees so as to form a broken line spike shape or a triangular pyramid shape or a peripheral cutting edge structure. The specific nail tip design structure enables the anastomosis nail to have more knife edges, increases the sharpness of the nail in human tissues and has better anastomosis effect.)

1. The utility model provides an anastomosis nail, includes crown, first nail leg and second nail leg branch are located the both ends of crown and homonymy extend, the equal shaping of end of first nail leg and second nail leg has the nail point, first nail leg the nail point with the second nail leg the nail point possess the same outer profile line and about the longitudinal center pin line axis symmetry of anastomosis nail, its characterized in that: the spike tip is provided with at least one outer inclined surface, and the included angle between the outer inclined surface and the normal plane of the inner side surface of the upper part of the first spike leg is not 180 degrees so as to form a broken line spike shape or a triangular pyramid shape or a peripheral cutting edge structure.

2. The staple according to claim 1, wherein the outer slopes include first and second outer slopes, the first and second outer slopes having an angle of less than 90 ° and being equal to a normal plane of the inner side surface of the upper portion of the first staple leg, respectively, and the angle between the first and second outer slopes being different from 180 °.

3. The staple according to claim 2, wherein the first and second outer slopes are symmetrically arranged along a central section plane, thereby forming a symmetrical sectional broken line pointed blade structure.

4. The staple according to claim 2, wherein the included angle between the first and second outer inclined surfaces is such that the staple tip is formed as a recessed fold line point structure or a protruding fold line point structure.

5. The staple according to claim 2, further comprising a third outer bevel, wherein the first outer bevel, the second outer bevel and the third outer bevel are intersected with each other two by two to form a top triangular pyramid blade structure.

6. The staple according to claim 5, wherein the first outer inclined surface and the second outer inclined surface have the same angle with the third outer inclined surface, respectively, and the angle between the third outer inclined surface and the normal plane of the inner side surface of the upper portion of the first staple leg is greater than 90 ° so that the apex of the triangular pyramid is the farthest end of the first staple tip in the length direction thereof.

7. The staple according to claim 5, wherein the triangular pyramid structure is one of a ribbed pyramid structure, a concave triangular pyramid structure, and a flat triangular pyramid structure.

8. The staple according to claim 1, wherein an included angle between the outer inclined surface and a normal plane of an inner side surface of the upper portion of the first leg is less than 90 °, a groove is formed below the outer inclined surface, a central plane of the groove is parallel to a plane of the outer inclined surface, and a contour line of the groove away from the upper portion of the first leg coincides with an outer contour line of the outer inclined surface to form an annular recessed embedded peripheral blade.

9. The staple according to claim 1, wherein an included angle between the outer inclined surface and a normal plane of the inner side surface of the upper portion of the first leg is less than 90 °, a region from the upper portion of the first leg to the outer inclined surface is gradually increased in width, and a contour line of the gradually increased width away from the upper portion of the first leg coincides with an outer contour line of the outer inclined surface, so that an annular protruding peripheral cutting edge is formed.

10. stapler, characterized in that it is equipped with a staple according to any one of claims 1-9.

Technical Field

the invention belongs to the technical field of medical instruments, and particularly relates to an anastomosis nail and an anastomat.

Background

With the development of medical technology, most of the surgeons gradually abandon the needle-thread freehand anastomosis operation mode to suture human tissues or organs, but use the medical anastomat instead, use the medical anastomat to suture, the operation is simple and easy, the suture is safe, and the wound is small. Therefore, the medical stapler is widely used in end, end and side anastomosis operations of organs and tissues such as digestive tract organs, respiratory tract organs, genitourinary organs and the like of a human body, an operation for forming a passage, an operation for closing an incision and an operation for clamping or cutting, and is particularly suitable for an anastomosis operation of organs and tissues which are difficult to expose and operate, so that the operation time can be shortened, and the operation quality can be improved.

The working principle of the medical stapler is mainly to use staples to break or staple tissues, similar to a stapler. When in operation, the medical anastomat clamps the tissue to be anastomosed between the nail anvil and the nail bin which are close to each other, the anastomotic nails are pushed out from the nail bin, after the nail tips of the anastomotic nails penetrate through the clamped tissue to be anastomosed, the anastomotic nails are bent and deformed on the nail anvil forming groove on the nail anvil, and the U-shaped or inverted trapezoidal anastomotic nails are bent into a B shape, thereby achieving the purpose of the operation of anastomosing the tissue.

In practice, it has been found that the tip of the staple has a significant effect on the working performance of the staple. Because the design of nail point portion is improper, current anastomosis nail has the problem that is difficult for piercing human tissue, and the working direction of anastomosis nail during the operation is also unstable, is difficult for piercing the tissue, causes extra wound for the human body easily, and by the leakproofness of anastomosis tissue and hemostatic effect also relatively poor, sews up inhomogeneous, influences healing effect, has caused the obstacle for clinical verification and use.

Therefore, it is needed to design an anastomosis nail for a medical anastomat, which has strong puncture force, stable working direction and good suturing effect, so as to reduce the operation pain of patients and improve the operation quality.

Disclosure of Invention

In view of the above, the present invention aims to provide an anastomosis nail and an anastomat, wherein the anastomosis nail has more incision amount due to a specially designed nail tip structure, increases the sharpness of the nail inserted into human tissues, has a better anastomosis effect, can reduce the operation pain of patients, and improves the operation quality.

The invention is realized by adopting the following technical scheme:

A staple for a stapler, comprising: crown, first nail leg and second nail leg branch are located the both ends and the homonymy of crown extend, the end of first nail leg and second nail leg all takes shape to have the nail point, first nail leg the nail point with the second nail leg the nail point possess the same outer profile line and about the longitudinal center axis line axis symmetry of anastomotic nail, the nail point has at least one outer inclined plane, outer inclined plane and the normal planar contained angle of the medial surface on first nail leg upper portion is 180 in order to form broken line point type or triangular pyramid or peripheral cutting edge structure.

Further, the outer inclined plane includes first outer inclined plane and second outer inclined plane, first outer inclined plane and second outer inclined plane are less than 90 and equal with the contained angle of the normal plane of the medial surface on first nail leg upper portion respectively, and the contained angle between first outer inclined plane and the second outer inclined plane is 180.

Specifically, the first outer inclined surface and the second outer inclined surface are symmetrically arranged along a central section, so that a section-symmetrical broken line pointed structure is formed.

Specifically, the included angle between the first outer inclined surface and the second outer inclined surface enables the nail tip to be formed into a concave embedded type folding line tip structure or a protruding type folding line tip structure.

Furthermore, the outer inclined plane also comprises a third outer inclined plane, and the first outer inclined plane, the second outer inclined plane and the third outer inclined plane are intersected pairwise to form a top triangular pyramid structure cutting edge.

Specifically, the included angles between the first outer inclined surface and the second outer inclined surface and the third outer inclined surface are the same, and the included angle between the third outer inclined surface and the normal plane of the inner side surface of the upper portion of the first nail leg is larger than 90 degrees, so that the vertex of the triangular pyramid is the farthest end of the first nail tip in the length direction of the first nail tip.

Specifically, the triangular pyramid structure is one of a convex pyramid structure, a concave triangular pyramid structure and a flat triangular pyramid structure.

Further, the included angle between the outer inclined plane and the normal plane of the inner side face of the upper portion of the first nail leg is smaller than 90 degrees, a groove is formed below the outer inclined plane, the central plane where the groove is located is parallel to the plane where the outer inclined plane is located, the contour line of the groove, which is far away from the upper portion of the first nail leg, is coincided with the outer contour line of the outer inclined plane, and therefore the annular concave embedded type peripheral cutting edge is formed.

Furthermore, the included angle between the outer inclined surface and the normal plane of the inner side surface of the upper part of the first nail leg is smaller than 90 degrees, the width of the area from the upper part of the first nail leg to the outer inclined surface is gradually increased, the gradually increased width is far away from the superposition of the contour line of the upper part of the first nail leg and the outer contour line of the outer inclined surface, and therefore the annular protruding type peripheral cutting edge is formed.

In addition, the invention further provides a medical anastomat which can be assembled with the anastomosis nail provided by the invention.

Compared with the prior art, the invention has the following beneficial technical effects:

The anastomosis nail provided by the invention has a nail tip structure designed specifically, so that the anastomosis nail has more knife edges, the sharpness degree of the anastomosis nail in human tissues is increased, the resistance force applied when the anastomosis nail penetrates into the human tissues can be reduced, the stable forming of the anastomosis nail is ensured, the anastomosis effect is better, and the phenomena of wound bleeding and the like are avoided.

The invention is further illustrated with reference to the following figures and examples.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic structural view of a staple for a medical stapler according to an embodiment of the present invention;

FIG. 2 is a schematic view of a staple tip for a staple in accordance with an embodiment of the present invention;

FIG. 3 is a schematic view of an alternative staple tip for use in a staple in accordance with an embodiment of the present invention;

FIG. 4 is a schematic view of an alternative staple tip for use in a staple in accordance with an embodiment of the present invention;

FIG. 5 is a schematic view of another alternative staple tip for use in a staple in accordance with an embodiment of the present invention;

Fig. 6 is a schematic structural view of another staple tip for a staple according to an embodiment of the present invention.

Reference numerals:

the nail comprises a crown 1, a first nail leg 2, a first nail leg lower part 21, a first bent part 22, a first nail leg upper part 23, a first nail tip 24, a first outer inclined surface 241, a second outer inclined surface 242, a third outer inclined surface 243, an outer inclined surface 244, a side edge 2421, a side edge 2422, a side edge 2423, an annular groove 245, a second nail leg 3, a second nail leg lower part 31, a second bent part 32, a second nail leg upper part 33, a second nail tip 34, a concave embedded type peripheral cutting edge 4 and a protruding type peripheral cutting edge 5.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

a staple for a medical stapler according to an embodiment of the present invention will be described with reference to fig. 1. As shown in fig. 1, the anastomosis nail for the medical anastomat comprises a nail crown 1, wherein two ends of the nail crown 1 are respectively connected with a first nail leg 2 and a second nail leg 3, and the first nail leg 2 and the second nail leg 3 extend at the same side, so that the whole anastomosis nail is in an inverted trapezoidal structure without a long bottom edge, namely, an included angle between the nail legs 2 and 3 and the nail crown 1 is an obtuse angle.

It will be understood by those skilled in the art that the specific shape of the staple is not limited thereto, and those skilled in the art can design the staple according to actual situations, such as a substantially U-shaped configuration, a substantially inverted "pi" configuration, etc., which are all applicable.

It will be appreciated by those skilled in the art that crown 1 may be formed in a variety of suitable geometries, such as a cylindrical configuration, a rectangular parallelepiped configuration, and the like.

Further, the first leg 2 of the anastomosis nail provided by the invention is provided with a first leg lower part 21, a first bending part 22 and a first leg upper part 23, the first leg lower part 21 and the first leg upper part 23 are in transition connection through the first bending part 22, the first leg upper part 23 is bent inwards at the first bending part 22 relative to the first leg lower part 21, the other end of the first leg lower part 21 is connected with the crown 1, and the tail end of the first leg upper part 23 is formed into a first nail tip 24; the second nail leg 3 is provided with a second nail leg lower part 31, a second bent part 32 and a second nail leg upper part 33, the second nail leg lower part 31 and the second nail leg upper part 33 are transitionally connected by the second bent part 32, the second nail leg upper part 33 is bent inwards relative to the second nail leg lower part 31 at the second bent part 32, the other end of the second nail leg lower part 31 is connected with the crown 1, and the tail end of the second nail leg upper part 33 is formed into a second nail tip 34.

Preferably, the joints between the legs 2, 3 and the crown 1 of the staple may adopt a circular arc transition structure.

As a modification, the legs 2, 3 of the staple may extend entirely in a straight or curved line.

The staple legs 2 and 3 of the staple can be molded with the crown 1 in an integrated molding mode, the height of the staple legs is set to be normal molding, and the staple legs 2 and 3 are bent at the bent parts after molding, so that the standard molding probability is improved.

It will be appreciated by those skilled in the art that staples provided by the present invention may be made of a metallic material, preferably a titanium alloy material or a degradable magnesium alloy material which allows staples remaining in the body tissue and organs after suturing to be degraded or fragmented as the wound slowly heals.

Preferably, the surface of the anastomosis nail provided by the invention can be uniformly plated with a silver ion coating, the thickness of the coating is 0.005-0.01 mm, and the silver ion coating can play a role in diminishing inflammation and sterilizing the anastomosis wound surface of human tissues and organs and is beneficial to wound healing.

Further, the distal end of the first leg upper portion 23 of the staple of the present invention is formed into a first blade-shaped tip 24, and the distal end of the second leg upper portion 33 is formed into a second blade-shaped tip 34, wherein the first and second tips 24 and 34 have the same outer contour line, and both are axisymmetric with respect to the longitudinal central axis of the staple.

It will be appreciated by those skilled in the art that in this embodiment, second tip 34 shares the same outer contour as first tip 24, and is axisymmetric about the longitudinal center axis of the staple and will not be described further herein.

As shown in fig. 2, in this modification, the first spike 24 is integrally formed in a broken line point type structure, i.e., the outer inclined surface of the first spike 24 includes a first outer inclined surface 241 and a second outer inclined surface 242, wherein the first outer inclined surface 241 and the second outer inclined surface 242 respectively have an angle of less than 90 ° and equal to the normal plane of the inner side surface of the first leg upper portion 23, the angle between the first outer inclined surface 241 and the second outer inclined surface 242 is less than or equal to 90 °, i.e., the first spike 24 is integrally formed in a protruding broken line point type structure, and the first outer inclined surface 241 and the second outer inclined surface 242 intersect with the side edge 2421 to form a top blade.

As will be appreciated by those skilled in the art, the center section and the cross-section of the staple are perpendicular to each other, and in this embodiment, the first outer inclined surface 241 and the second outer inclined surface 242 are symmetrically disposed along the center section, thereby forming a protruding-section symmetrical broken-line pointed structure.

It will be appreciated by those skilled in the art that in this embodiment, the first outer inclined surface 241 and the second outer inclined surface 242 each have an angle of less than 90 ° and equal to the normal plane of the inner side surface of the first leg upper portion 23, and the angle between the first outer inclined surface 241 and the second outer inclined surface 242 is greater than 90 °, i.e. the first spike 24 is integrally formed as a recessed fold line spike type structure.

Further, to further enhance the stapling effect of the staples, the present invention continues to provide another improved staple point structure based on the above-described embodiment shown in fig. 2, wherein fig. 3-4 illustrate such improvement of the present invention.

As shown in fig. 3 to 4, in this modification, the first spike 24 is integrally formed in a triangular pyramid structure, the outer slope of the first spike 24 includes a first outer slope 241, a second outer slope 242, and a third outer slope 243, and the first outer slope, the second outer slope, and the third outer slope intersect two by two to form a top triangular pyramid structure blade, i.e., the first outer slope 241 and the second outer slope 242 intersect to form a side edge 2421, the first outer slope 241 and the third outer slope 243 intersect to form a side edge 2422, the second outer slope 242 and the third outer slope 243 intersect to form a side edge 2423, and the three side edges are formed in a triangular pyramid structure.

Further, the included angles between the first outer inclined surface 241 and the third outer inclined surface 243 are the same as the included angles between the second outer inclined surface 242 and the third outer inclined surface 243, and the included angle between the third outer inclined surface 243 and the normal plane of the inner side surface of the first nail leg upper portion 23 is larger than 90 degrees, so that the vertex of the triangular pyramid is the farthest end of the first nail tip 24 in the length direction of the triangular pyramid.

In the embodiment shown in fig. 3 to 4, the triangular pyramid structure is specifically a convex triangular pyramid structure, but the triangular pyramid structure is not limited thereto, and may be a concave triangular pyramid structure or a flat triangular pyramid structure.

To improve the quality of the procedure, ensure sufficient penetration strength of the staples, and enable easier penetration of the body tissue for superior stapling, the present invention continues to provide an improved staple point construction, wherein fig. 5 illustrates such an improvement of the present invention.

As shown in fig. 5, taking the first spike 24 as an example, a recess is formed under the outer inclined surface to form a recessed insert type peripheral blade.

As shown in fig. 5, also taking the first spike 24 as an example, the first spike 24 has an outer inclined surface 244, the angle between the outer inclined surface 244 and the normal plane of the inner side surface of the first leg upper portion 23 is less than 90 °, a groove 245 is formed below the outer inclined surface 244, and the central plane of the groove 245 and the plane of the outer inclined surface 244 are parallel to each other. Further, the depth of the recess 245 may be designed by one skilled in the art as appropriate, so long as sufficient penetration strength of the staples is ensured.

Preferably, the contour of the recess 245 away from the first leg upper portion 23 coincides with the outer contour of the outer bevel 244, whereby an annular recessed peripheral cutting edge 4 is formed.

Preferably, the discontinuous peripheral cutting edge 4 is formed with a portion of the outer contour line surrounding the outer bevel 244 as an edge line.

Further, to further enhance the stapling effect of the staple, the present invention continues to provide yet another improved staple point structure based on the above-described embodiment shown in fig. 5, wherein fig. 6 illustrates such an improvement of the present invention.

As shown in fig. 6, the second spike 24 is exemplified by a projecting peripheral edge formed by increasing the width of the region from the upper portion of the first leg to the outer inclined surface below the outer inclined surface.

As shown in fig. 6, also taking first spike 24 as an example, in this modification, the width of the region from first leg upper portion 23 to outer ramp 244 is increased, and furthermore, the increased width can be designed by those skilled in the art according to the actual situation, as long as sufficient penetration strength of the staples is ensured.

Preferably, the contour of the increasing width away from the first leg upper portion 23 coincides with the outer contour of the outer bevel 244, whereby an annular projecting peripheral cutting edge 5 is formed.

preferably, the portion of the outer contour line surrounding the outer chamfer 244 is taken as an edge line to which the width of the first leg 2 and the second leg 3 gradually transitions, forming a discontinuous peripheral edge 5.

It will be appreciated by those skilled in the art that in this embodiment, second tip 34 shares the same outer contour as first tip 24, and is axisymmetric about the longitudinal center axis of the staple and will not be described further herein.

Through the design, the anastomosis nail provided by the invention has more knife edges, increases the sharpness of the nail penetrating into human tissues, can reduce the resistance force applied when the anastomosis nail penetrates into the human tissues, ensures the stable forming of the anastomosis nail, has good anastomosis effect, and can not cause the phenomena of wound bleeding and the like.

In addition, the invention also provides a stapler which uses the staple provided by the invention.

It is noted that, in this document, relational terms are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.