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,所述吻合钉截面为变截面,所述钉冠表面具有至少一个平面。特定的钉冠结构使得吻合钉具有较好的组织结合面,能够减少吻合钉对缝合组织的额外损伤,通用性好,安全性高,不会造成创口渗血等现象。(The invention discloses an anastomosis nail, which comprises: the nail 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 cross section of the anastomotic nail is a variable cross section, and at least one plane is arranged on the surface of the nail crown. The specific crown structure enables the anastomosis nail to have a good tissue junction surface, can reduce the additional damage of the anastomosis nail to the sutured tissue, is good in universality and high in safety, and cannot cause phenomena such as wound bleeding.)

1. A staple, characterized by: including 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 there is the spike, the anastomotic nail cross-section is variable cross-section, crown surface has at least one plane.

2. The staple of claim 1 wherein the first and second legs are circular in cross-section and the crown has at least one straight edge in cross-section.

3. The staple according to claim 2, wherein the crown-forming overall cross-section is rectangular, each rectangular side cross-section extends to be a first surface, a second surface, a third surface, and a fourth surface, which are all planar, a cross-sectional straight line of the first surface and the second surface is a long side of the rectangle, and a cross-sectional straight line of the third surface and the fourth surface is a short side of the rectangle.

4. The staple according to claim 2, wherein the crown-forming overall cross-section is a region in which upper and lower straight lines extending as the first and second planar surfaces and two side arcs extending as the third and fourth curved surfaces are closed.

5. The staple according to claim 4, wherein the first surface and the second surface have a cross-sectional straight length equal to each other, and the third surface and the fourth surface have a cross-sectional arc chord length equal to or greater than the cross-sectional straight length of the first surface and the second surface.

6. The staple according to claim 1, wherein the tip has at least one outer bevel angled at an angle other than 180 ° from a normal plane of an inner side surface of the upper portion of the first leg to form a broken line tip or triangular pyramid blade structure.

7. The staple according to claim 6, wherein the outer inclined surfaces include a first outer inclined surface and a second outer inclined surface, the first outer inclined surface and the second outer inclined surface respectively form an included angle with a normal plane of an inner side surface of the upper portion of the first staple leg which is less than 90 ° and equal to each other, and the included angle between the first outer inclined surface and the second outer inclined surface is not 180 ° to form a broken line sharp blade structure.

8. The staple according to claim 7, wherein the outer slopes further include third outer slopes, and the first outer slope, the second outer slope and the third outer slope intersect with each other two by two to form a top triangular pyramid blade structure.

9. The staple according to claim 8, wherein the first and second outer inclined surfaces 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 trigonal pyramid is the farthest end of the first staple tip in the length direction thereof.

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 is found that for conventional staples, the section of the crown is mostly circular or elliptical, after the tissue is sutured by the staples, the contact between the crown with the circular or elliptical section and the tissue is local line contact, when external cutting force is large, the line contact easily causes local compression of the crown to the tissue, so that the circulation of internal blood is blocked, and the recovery of the tissue is not facilitated.

Therefore, it is highly desirable to design a staple for a medical stapler which is stable in forming when suturing a tissue, reduces additional damage of the staple to the tissue, and has a good suturing effect, so as to reduce the operation pain of a patient and improve the operation quality.

Disclosure of Invention

In view of the above, the present invention aims to provide an anastomosis staple and an anastomat, wherein the anastomosis staple has a good tissue junction surface through a specially designed crown structure, so as to improve a tissue suturing effect, reduce the pain of a patient in an operation, and improve the operation quality.

The invention is realized by adopting the following technical scheme:

A staple for a stapler, comprising: the nail 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 cross section of the anastomotic nail is a variable cross section, and at least one plane is arranged on the surface of the nail crown.

Further, the first and second legs are circular in cross-section and the crown has at least one straight edge in cross-section.

Specifically, the integral section of the crown forming is rectangular, the sections of all the rectangular sides extend to be a first surface, a second surface, a third surface and a fourth surface which are all planes, the section straight lines of the first surface and the second surface are long sides of the rectangle, and the section straight lines of the third surface and the fourth surface are short sides of the rectangle.

Specifically, the whole section of the crown forming is an area closed by an upper straight line, a lower straight line and two side arc lines, wherein the upper straight line and the lower straight line extend to form a first surface and a second surface of a plane, and the two side arc lines extend to form a third surface and a fourth surface of a curved surface.

Specifically, the first surface and the second surface have the same cross-sectional straight line length, and the third surface and the fourth surface have the same or larger cross-sectional arc chord length than the cross-sectional straight line length of the first surface and the second surface.

Further, the spike tip has at least one outer inclined surface having an angle of not 180 ° with a normal plane of an inner side surface of an upper portion of the first leg to form a broken line tip type or triangular pyramid blade structure.

Further, 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 degrees not and forms broken line point type cutting edge 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 blade structure.

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.

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 contact surface of the crown and the tissue is a plane, so that the crown and the tissue are in surface contact, and the local pressure applied to the tissue when the crown is in contact with the tissue can be effectively dispersed and reduced through the surface contact, so that the additional damage to the tissue is avoided.

The contact of the nail crown and the tissue surface can prevent that the nail crown from cutting the tissue under the staple over-excitation state, the effectual security that improves the operation, and the staple is applied to various energizers, and the homoenergetic reaches the effect of preventing the over-cutting, and the commonality is good, and the security is high.

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 structural view of a crown for a staple provided in accordance with an embodiment of the present invention;

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

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

fig. 5 is a schematic structural view of another staple tip for a staple provided in accordance with an embodiment of the present invention.

Reference numerals:

The nail comprises a crown 1, a first surface 11, a second surface 12, a third surface 13, a fourth surface 14, 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, a side edge 2421, a side edge 2422, a side edge 2423, a second nail leg 3, a second nail leg lower part 31, a second bent part 32, a second nail leg upper part 33 and a second nail tip 34.

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.

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, in order to improve the suture effect of the staple, the section of the crown 1 may be a variable section, and at least one side of the crown 1 contacting the tissue may be a plane. It will be appreciated by those skilled in the art that crown 1 is shaped to have a rectangular, square, or other planar configuration at the tissue contacting surface in cross-section.

it will be appreciated by those skilled in the art that the cross-section of the leg portions remains circular. The legs of the circular cross-section provide the best tissue encapsulation after entering the tissue. For the staple legs with the oval or rectangular cross sections, the tissue wrapping performance is reduced, the stress concentration can be caused when the tissue incision is stressed by using the non-circular cross section anastomosis staple, and the tissue is easy to tear at the non-smooth transition surface part, so that the bleeding is caused, and the additional damage is caused.

Further, as shown in FIG. 2, in one embodiment, crown 1 is formed to have a generally rectangular cross-section, each of the rectangular cross-sections extending along the cross-section into a first surface 11, a second surface 12, a third surface 13, and a fourth surface 14, each of which is planar, wherein the first surface 11 is in contact with the inner side tissue, the second surface 12 is in contact with the outer side tissue, the straight line of the cross-section of the first surface 11 and the second surface 12 is the long side of the rectangle, and the straight line of the cross-section of the third surface 13 and the fourth surface 14 is the short side of the rectangle.

Further, in this embodiment, the first and second legs 2, 3 are circular in cross-section and transition surfaces are provided between the first and second legs 2, 3 and the crown 1, which transition surfaces are smooth surfaces in order to prevent additional damage to the tissue.

Further, to further enhance the stapling effect of the staples, the present invention continues to provide another improved crown structure on the basis of the above-described embodiment shown in fig. 2, in which, as shown in fig. 3, the formed overall cross section of the crown 1 is a region where upper and lower straight lines and both side arcs are closed, wherein the first surface 11 and the second surface 12 have straight cross sections extending as upper and lower planes contacting with the tissue, and the third surface 13 and the fourth surface 14 have curved cross sections extending as both side curved surfaces.

Further, the straight lengths of the sections of the first surface 11 and the second surface 12 are equal, so that the stressed surfaces of the tissues on the inner side and the outer side are uniform, and the chord length of the section arc line of the third surface 13 and the chord length of the section arc line of the fourth surface 14 are equal to or greater than the straight length of the section of the first surface 11, so that the wrapping performance of the tissue on the crown is increased, the healing of the tissue is facilitated, and the suturing effect is improved.

Preferably, only the first surface 11 may be provided as a plane, and the second surface 12, the third surface 13 and the fourth surface 14 are all curved surfaces, so as to improve the wrapping property of the tissue to the crown as a whole.

It will be understood by those skilled in the art that the profiled cross-section of the crown 1 is variable, having different cross-sections along a plurality of extensions of the crown 1, the extensions of the plurality of different cross-sections forming a coplanar first surface and/or second surface, the transition surfaces of the remaining surfaces between the plurality of extensions being smooth surfaces, and will not be described herein.

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. 4, 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.

In order to improve the quality of the operation and ensure that the staple has sufficient penetration strength, and can more easily penetrate the tissue of the human body to obtain an excellent suturing effect, the present invention continues to provide an improved spike structure, as shown in fig. 5, based on the above-described embodiment shown in fig. 4, wherein the first spike tip 24 is integrally formed in a triangular pyramid structure, the outer slope of the first spike tip 24 includes a first outer slope 241, a second outer slope 242, and a third outer slope 243, 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.

through the design, the anastomosis nail provided by the invention has a better tissue junction surface, can reduce the additional damage of the anastomosis nail to the suture tissue, has good universality and high safety on the basis of ensuring the stable forming of the anastomosis nail when penetrating into the human tissue, 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.