CN110652329B

CN110652329B - Anastomosis nail and medical anastomat

Info

Publication number: CN110652329B
Application number: CN201910941554.4A
Authority: CN
Inventors: 李学军; 赵博; 高轶明
Original assignee: BEIJING BIOSIS HEALING BIOLOGICAL TECHNOLOGY CO LTD
Current assignee: BEIJING BIOSIS HEALING BIOLOGICAL TECHNOLOGY CO LTD
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2021-01-15
Anticipated expiration: 2039-09-30
Also published as: CN110652329A

Abstract

The invention discloses an anastomosis nail and a medical anastomat, which comprise a nail crown (1), a first nail leg (2) and a second nail leg (3), wherein nail tips are formed at the tail ends of the first nail leg (2) and the second nail leg (3), each nail tip is provided with a first outer inclined surface and a second outer inclined surface, the intersection line of the first outer inclined surfaces and the second outer inclined surfaces is the farthest end of the corresponding first nail leg (2) or the corresponding second nail leg (3) along the length direction of the first nail leg or the second nail leg, and a propping blade part (4) is formed at the joint of the first outer inclined surfaces and the outer side surface of the corresponding first nail leg (2) or the corresponding second nail leg (3). The abutting edge part (4) is firstly contacted with the nail anvil (5) of the medical anastomat, so that the stress strength of the anastomosis nail is effectively reduced, the excessive bending deformation of nail legs is avoided, the anastomosis nail has more knife edges, the sharpness degree of the anastomosis nail into human tissues is increased, and the anastomosis effect is better.

Description

Anastomosis nail and medical anastomat

Technical Field

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

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.

Medical anastomats are widely used for end-to-end, end-to-side and side-to-side anastomosis of organs and tissues such as digestive tract organs, respiratory tract organs, genitourinary organs and the like of human bodies, for channel forming operations, incision closing operations and clamping or cutting operations, are particularly suitable for anastomosis operations of organs and tissues which are difficult to expose and operate, can reduce operation time and improve operation quality.

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 is improper, current anastomosis nail has the problem that is difficult for pricking human tissue, and the working direction of anastomosis nail is also unstable during the operation, causes the mistake to pierce through easily, causes extra wound to the human body, and is also relatively poor by the leakproofness and the hemostatic effect of anastomotic tissue, 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, in order to solve the above problems in the prior art, the present invention aims to provide an anastomosis nail for a medical stapler, wherein a top edge portion is formed on a nail tip of the anastomosis nail, and the top edge portion is firstly contacted with a nail anvil of the medical stapler, so that the stress strength of the anastomosis nail can be effectively reduced, excessive bending deformation of nail legs is avoided, the anastomosis nail has more knife edges, the sharpness degree of the anastomosis nail into human tissues is increased, the anastomosis effect is better, the operation pain of a patient can be reduced, and the operation quality is improved.

The invention is realized by adopting the following technical scheme:

a staple, comprising: crown, first nail leg and second nail leg, the equal shaping in end of first nail leg and second nail leg has the nail point, the nail point has first outer inclined plane and second outer inclined plane, the intersection line on first outer inclined plane and second outer inclined plane is corresponding first nail leg or second nail leg are along the ascending distal end of its length direction, first outer inclined plane and corresponding the lateral surface junction shaping of first nail leg or second nail leg has the cutting part of pushing against, and this cutting part of pushing against is constructed as: in the process that the anastomosis nail is deformed by the medical anastomat, the nail anvil of the medical anastomat can firstly transmit the deformation force to the nail tip by the abutting blade part.

Further, a triangular pyramid structure is further formed on the second outer inclined surface.

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

Furthermore, a groove is formed by taking the whole or part of an outer contour line surrounding the first outer inclined surface and the second outer inclined surface as an edge line, so that a concave embedded type peripheral blade is formed at the outer contour line.

Further, the whole or part of the outer contour line surrounding the first outer bevel and the second outer bevel is taken as a margin line, and the width of the first nail leg and the second nail leg is gradually transited to the margin line, so that a protruding peripheral edge is formed at the outer contour line.

Further, the first nail leg and the second nail leg are arranged at two ends of the crown and extend on the same side, and the nail tip of the first nail leg and the nail tip of the second nail leg have the same outer contour line and are axisymmetric about the longitudinal central axis of the anastomotic nail.

Furthermore, the first nail leg and the second nail leg are provided with bent portions, and the bent portions divide the first nail leg and the second nail leg into a lower nail leg portion and an upper nail leg portion.

Furthermore, the material of the anastomosis nail is a metal material.

Further, the surface of the anastomosis nail is plated with a silver ion coating.

Further, the included angle between the first nail leg and the crown and the included angle between the second nail leg and the crown are obtuse angles.

In addition, the invention further provides a medical anastomat which comprises a nail anvil and is provided with the anastomosis nail provided by the invention.

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

the abutting edge part is formed on the nail tip of the anastomosis nail, and the abutting edge part is firstly contacted with the nail anvil, so that the stress strength of the anastomosis nail can be effectively reduced, the first nail leg and the second nail leg are prevented from being bent and deformed excessively, more knife edges are provided, the sharpness degree of the nail inserted into 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 cannot be caused.

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 another alternative staple tip for a staple provided in accordance with an embodiment of the present invention;

fig. 5 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 nail 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 side edge 2421, a side edge 2422, a side edge 2423, a groove 243, a first groove part 2431, a second groove part 2432, 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 top blade part 4, a nail anvil 5, a concave embedded type peripheral blade 6, a first concave embedded type peripheral blade 61, a second concave embedded type peripheral blade 62, a protruded type peripheral blade 7, a first protruded type peripheral blade 71 and a second protruded type peripheral blade 72.

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 variant, however, the

legs

2, 3 of the staple may also 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.

In order to improve the quality of the operation, ensure that the staple has enough penetrating strength, can penetrate the human tissue more easily and obtain excellent suture effect, the invention provides an improved structure of the staple point, wherein, fig. 2 shows the improvement of the invention.

As shown in fig. 2, taking the first spike 24 as an example, in the modification, the first spike 24 is integrally formed into a broken-line blunt structure, that is, 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 intersection line of the first outer inclined surface 241 and the second outer inclined surface 242 is the farthest end of the first spike 24 along the length direction thereof, and a top blade portion 4 is formed at the connection position of the first outer inclined surface 241 and the outer side surface of the first leg upper portion 23 of the first spike 24, and the top blade portion 4 is used for abutting against an anvil 5 (also called a "staple abutment") of a medical stapler, and is the portion of the first spike 24 which is first contacted with the anvil 5, so as to generate an initial pressing force from the anvil 5 to deform a staple.

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

It can be understood that in the deformation process of the anastomosis nail, the abutting edge part 4 is firstly contacted with the nail anvil 5, so that the stress strength of the anastomosis nail on the nail anvil 5 can be effectively reduced, and the excessive bending of the

nail legs

2 and 3 is avoided.

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

As shown in fig. 3, still taking the first spike 24 as an example, in the modification, a triangular pyramid structure having three

side edges

2421, 2422 and 2423 is formed on the second outer inclined surface 242 of the first spike 24, and in the embodiment shown in fig. 3, the triangular pyramid structure is embodied as a flat triangular pyramid structure, but not limited thereto, and may be a concave triangular pyramid structure or a convex pyramid structure.

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.

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 embodiments shown in fig. 2 or 3, wherein fig. 4 shows such an improvement of the present invention.

As shown in fig. 4, still taking the first spike tip 24 as an example, in the modification, a first groove portion 2431 is formed under the first outer inclined surface 241 of the first spike tip 24, and a plane of the first groove portion 2431 is parallel to a plane of the first outer inclined surface 241; a second groove portion 2432 is formed under the second outer inclined surface 242 of the first spike 24, and a plane in which the second groove portion 2432 is located and a plane in which the second outer inclined surface 242 is located are parallel to each other. The first groove portion 2431 and the second groove portion 2432 are connected end to form the groove 243. The depth of the first groove portion 2431 and the second groove portion 2432 may be designed by those skilled in the art according to actual conditions as long as sufficient penetration strength of the staples is ensured.

Preferably, the contour line of the first groove portion 2431 away from the first leg upper portion 23 coincides with the outer contour line of the first outer inclined surface 241, so that a first recessed embedded type peripheral blade 61 is formed; the contour of the second groove portion 2432 away from the first leg upper portion 23 coincides with the outer contour of the second outer inclined surface 242, so that a second recessed insert type peripheral blade 62 is formed. Similarly, the first female-fit peripheral cutting edge 61 and the second female-fit peripheral cutting edge 62 are connected end to form a complete female-fit peripheral cutting edge 6.

Preferably, the discontinuous peripheral cutting edge 6 is formed with a portion of the outer contour line surrounding the first and second

outer bevels

241 and 242 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 embodiments shown in fig. 2 or 3, wherein fig. 5 illustrates such an improvement of the present invention.

As shown in fig. 5, taking the first spike 24 as an example, in the modification, the width of the region from the first leg upper portion 23 to the first outer inclined surface 241 is gradually increased, so that a first protruded peripheral blade 71 is formed, the width of the region from the first leg upper portion 23 to the second outer inclined surface 242 is gradually increased, so that a second protruded peripheral blade 72 is formed, and the first protruded peripheral blade 71 and the second protruded peripheral blade 72 are connected end to form a complete protruded peripheral blade 7. In addition, the width of the gradually-increased region from the upper part of the staple leg to the first outer inclined surface and the second outer inclined surface can be designed by a person skilled in the art according to actual conditions, as long as the staple has enough penetrating strength.

Preferably, the portion of the outer contour line surrounding the first 241 and second 242 outer bevels is used as an edge line, to which the width of the first leg 2 and second leg 3 gradually transitions, forming a discontinuous peripheral edge 7.

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 medical stapler which is provided with a nail anvil 5 and 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.

Claims

1. A staple, characterized in that it comprises: crown (1), first nail leg (2) and second nail leg (3), the equal shaping in end of first nail leg (2) and second nail leg (3) has the nail point, the nail point has first outer inclined plane and second outer inclined plane, the intersection line on first outer inclined plane and second outer inclined plane is corresponding first nail leg (2) or second nail leg (3) are along the ascending farthest end of its length direction, first outer inclined plane and corresponding the lateral surface junction shaping of first nail leg (2) or second nail leg (3) has and supports top cutting part (4), should support top cutting part (4) by the structure: in the process that the anastomosis nail is deformed by the aid of the medical anastomat, a nail anvil (5) of the medical anastomat can firstly transmit deformation force to the nail tip by the aid of the abutting blade part (4);

a triangular pyramid structure is further formed on the second outer inclined surface; the triangular pyramid structure has three side edges intersecting the second outer inclined surface;

a groove (243) is formed by taking the whole or part of an outer contour line surrounding the first outer inclined surface and the second outer inclined surface as an edge line, so that a concave embedded type peripheral blade (6) is formed at the outer contour line;

or, the whole or part of the outer contour line surrounding the first outer bevel and the second outer bevel is taken as an edge line, and the width of the first nail leg (2) and the second nail leg (3) is gradually transited to the edge line, so that a protruding peripheral cutting edge (7) is formed at the outer contour line.

2. The staple according to claim 1, wherein the triangular pyramid structure is one of a convex triangular pyramid structure, a concave triangular pyramid structure, and a flat triangular pyramid structure.

3. The staple according to claim 1, characterized in that said first leg (2) and said second leg (3) are respectively provided at both ends of said crown (1) and extend on the same side, said tip of said first leg (2) and said tip of said second leg (3) having the same outer profile and being axisymmetric about the longitudinal central axis of said staple.

4. The staple according to claim 1, wherein the first leg (2) and the second leg (3) are provided with a bend which divides the first leg (2) and the second leg (3) into a lower leg portion and an upper leg portion.

5. Staple according to claim 1, characterized in that the angle between the first (2) and second (3) legs and the crown (1) is obtuse.

6. The staple according to claim 1, wherein the staple is made of a metal material, and a silver ion coating is plated on the surface of the staple.

7. Medical stapler comprising an anvil (5), characterized in that it is equipped with a staple according to any one of claims 1-6.