Anastomosis stapler and anastomosis device

Abstract

The present invention discloses an anastomosis staple, comprising 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 on the same side, and the ends of the first nail leg and the second nail leg are both formed with nail tips, and the nail tips of the first nail leg and the second nail leg have the same outer contour line and are axisymmetric about the longitudinal center axis of the anastomosis staple, characterized in that: the nail tip has at least one outer inclined surface, and the 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 not 180° to form a broken line tip type or a triangular pyramid or a peripheral blade structure. The specific nail tip design structure enables the anastomosis staple to have more blades, increases the sharpness of the nail entering the human tissue, and has a better anastomosis effect.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to an anastomotic staple and an anastomotic device. Background Art

[0002] With the development of medical technology, most surgical clinicians have gradually abandoned the needle-thread barehanded anastomosis method to sew human tissues or organs, and instead use medical staplers. The use of medical staplers for suturing is simple, safe, and less traumatic. Therefore, medical staplers are being widely used in end-to-end, end-to-side, and side-to-side anastomosis of organs and tissues such as the human digestive tract, respiratory tract, and urogenital organs, as well as operations to form channels, close incisions, and clamp or cut. They are especially suitable for anastomosis of organs and tissues that are difficult to expose and operate, which can reduce the operation time and improve the quality of the operation.

[0003] The working principle of the medical stapler is to use staplers to separate or staple tissues, similar to a stapler. During operation, the medical stapler clamps the tissue to be stapled between the staple anvil and the staple magazine, pushes the staples out of the staple magazine, and after the staple tips penetrate the clamped tissue to be stapled, the staples are bent and deformed on the staple anvil forming groove on the staple anvil, and the U-shaped or inverted trapezoidal staples are bent into a B shape, achieving the surgical purpose of stapler tissues.

[0004] In practice, it is found that the tip of the stapler has a great influence on the working performance of the stapler. Due to improper design of the tip, the existing staplers have the problem of not being easy to penetrate human tissues. During operation, the working direction of the staplers is also unstable, not easy to penetrate tissues, and easily causing additional trauma to the human body. In addition, the sealing and hemostatic effects of the stapled tissues are also poor, the suture is uneven, and the healing effect is affected, which has caused obstacles to clinical verification and use.

[0005] Therefore, there is an urgent need to design a medical stapler with strong puncture force, stable working direction and good suturing effect to reduce the patient's surgical pain and improve the quality of surgery. Summary of the invention

[0006] In view of this, in order to solve the above-mentioned problems existing in the prior art, the present invention aims to provide a stapler and a stapler, which has a larger number of cutting edges due to a specifically designed staple tip structure, thereby increasing the sharpness of the stapler when entering human tissue, achieving a better anastomosis effect, reducing the patient's surgical pain, and improving the quality of the surgery.

[0007] The present invention is implemented by adopting the following technical solutions:

[0008] A stapler for a stapler, comprising: a staple crown, a first staple leg and a second staple leg, wherein the first staple leg and the second staple leg are respectively arranged at two ends of the staple crown and extend on the same side, and the ends of the first staple leg and the second staple leg are both formed with staple tips, the staple tips of the first staple leg and the second staple leg have the same outer contour line and are axisymmetric about the longitudinal center axis of the staple, and the staple tips have at least one outer inclined surface, and the angle between the outer inclined surface and the normal plane of the inner side surface of the upper part of the first staple leg is not 180° to form a broken line tip or a triangular pyramid or a peripheral blade structure.

[0009] Furthermore, the outer bevel includes a first outer bevel and a second outer bevel, and the angles between the first outer bevel and the second outer bevel and the normal plane of the inner side surface of the upper part of the first nail leg are respectively less than 90° and equal, and the angle between the first outer bevel and the second outer bevel is not 180°.

[0010] Specifically, the first outer inclined surface and the second outer inclined surface are symmetrically arranged along the central section, thereby forming a section-symmetrical broken line point structure.

[0011] Specifically, the angle between the first outer bevel and the second outer bevel enables the nail tip to be formed into a recessed fold line tip structure or a protruding fold line tip structure.

[0012] Furthermore, the outer bevel also includes a third outer bevel, and the first outer bevel, the second outer bevel, and the third outer bevel are crossed in pairs to form a top triangular pyramid structure blade.

[0013] Specifically, the first outer bevel and the second outer bevel have the same angle with the third outer bevel respectively, and the angle between the third outer bevel and the normal plane of the inner side surface of the upper part of the first nail leg is greater than 90°, so that the vertex of the triangular pyramid is the farthest end of the first nail tip along its length direction.

[0014] Specifically, the triangular pyramid structure is one of a convex pyramid structure, a concave triangular pyramid structure and a flat triangular pyramid structure.

[0015] Furthermore, the angle between the outer bevel and the normal plane of the inner side surface of the upper part of the first nail leg is less than 90°, and a groove is formed under the outer bevel. The center plane where the groove is located is parallel to the plane where the outer bevel is located. The contour line of the groove away from the upper part of the first nail leg coincides with the outer contour line of the outer bevel, so as to form an annular recessed peripheral blade.

[0016] Furthermore, the angle between the outer bevel and the normal plane of the inner side surface of the upper part of the first nail leg is less than 90°, and the width of the area from the upper part of the first nail leg to the outer bevel gradually increases, and the increasing width coincides with the outer contour line of the outer bevel away from the upper part of the first nail leg, thereby forming a ring-shaped protruding outer blade.

[0017] In addition, the present invention further provides a medical stapler, which can be equipped with the above-mentioned stapler provided by the present invention.

[0018] Compared with the prior art, the present invention has the following beneficial technical effects:

[0019] The anastomotic staple of the present invention has a specially designed nail tip structure, so that it can have more cutting edges, increase the sharpness of the nail penetrating into human tissue, reduce the resistance encountered by the anastomotic staple when penetrating into human tissue, ensure the stable forming of the anastomotic staple, and achieve a better anastomotic effect without causing bleeding from the wound.

[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0022] Figure 1 A schematic structural diagram of a stapler for a medical stapler provided in an embodiment of the present invention;

[0023] Figure 2 A schematic structural diagram of a staple tip used in anastomotic staples provided in an embodiment of the present invention;

[0024] Figure 3 A schematic structural diagram of another type of staple tip used in anastomotic staples provided in an embodiment of the present invention;

[0025] Figure 4 A schematic structural diagram of another type of staple tip used in anastomotic staples provided in an embodiment of the present invention;

[0026] Figure 5 A schematic structural diagram of another staple tip used in anastomotic staples provided in an embodiment of the present invention;

[0027] Figure 6 A schematic structural diagram of another staple tip used in anastomotic staples provided in an embodiment of the present invention.

[0028] Reference numerals:

[0029] Nail crown 1, first nail leg 2, first nail leg lower part 21, first bending portion 22, first nail leg upper part 23, first nail tip 24, first outer bevel 241, second outer bevel 242, third outer bevel 243, outer bevel 244, side edge 2421, side edge 2422, side edge 2423, annular groove 245, second nail leg 3, second nail leg lower part 31, second bending portion 32, second nail leg upper part 33, second nail tip 34, recessed peripheral blade 4, protruding peripheral blade 5. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0031] Refer to the following Figure 1 The present invention provides a stapler for a medical stapler. Figure 1 As shown, a stapler for a medical stapler comprises a staple crown 1, with a first staple leg 2 and a second staple leg 3 connected to two ends of the staple crown 1, respectively. The first staple leg 2 and the second staple leg 3 extend on the same side, so that the stapler of the present invention is an inverted trapezoidal structure without a long bottom edge as a whole, that is, the angle between the staple legs 2, 3 and the staple crown 1 is an obtuse angle.

[0032] Those skilled in the art will appreciate that the specific shape of the staples is not limited herein, and those skilled in the art may design the staples according to actual conditions, such as a roughly U-shaped structure, a roughly inverted "П"-shaped structure, etc., which are all applicable.

[0033] Those skilled in the art will appreciate that the crown 1 can be formed into various applicable geometric shapes such as a cylindrical structure, a rectangular parallelepiped structure, etc.

[0034] Furthermore, the first nail leg 2 of the stapler of the present invention comprises a first nail leg lower portion 21, a first bending portion 22, and a first nail leg upper portion 23. The first nail leg lower portion 21 and the first nail leg upper portion 23 are transitionally connected by the first bending portion 22. The first nail leg upper portion 23 is bent inwardly at the first bending portion 22 relative to the first nail leg lower portion 21. The other end of the first nail leg lower portion 21 is connected to the nail crown 1, and the end of the first nail leg upper portion 23 is formed as a first nail tip 24. The second nail leg 3 comprises a second nail leg lower portion 31, a second bending portion 32, and a second nail leg upper portion 33. The second nail leg lower portion 31 and the second nail leg upper portion 33 are transitionally connected by the second bending portion 32. The second nail leg upper portion 33 is bent inwardly at the second bending portion 32 relative to the second nail leg lower portion 31. The other end of the second nail leg lower portion 31 is connected to the nail crown 1, and the end of the second nail leg upper portion 33 is formed as a second nail tip 34.

[0035] Preferably, the connection between the staple legs 2 , 3 and the staple crown 1 of the staple may adopt an arc transition structure.

[0036] As a variation, the staple legs 2, 3 of the stapler may also extend in a straight line or an arc shape as a whole.

[0037] Those skilled in the art can understand that the legs 2 and 3 of the stapler can be integrally formed with the crown 1 , and the height thereof can be set to enable normal forming. After forming, the legs 2 and 3 are bent at the bending portion, thereby increasing the probability of standard forming.

[0038] Those skilled in the art will appreciate that the staples provided by the present invention may be made of metal materials, preferably titanium alloy materials or degradable and absorbable magnesium alloy materials. The degradable and absorbable magnesium alloy materials may allow the staples remaining in human tissues and organs after suturing to be degraded or broken up as the wound slowly heals.

[0039] Preferably, the surface of the anastomotic staple provided by the present invention can be uniformly coated with a layer of silver ion coating, the thickness of the coating is 0.005-0.01 mm, and the silver ion coating can play an anti-inflammatory and bactericidal role on the anastomotic wound surface of human tissues and organs, and contribute to wound healing.

[0040] Furthermore, the end of the upper portion 23 of the first nail leg of the staple of the present invention is formed into a knife-shaped first nail tip 24, and the end of the upper portion 33 of the second nail leg is formed into a knife-shaped second nail tip 34, wherein the first nail tip 24 and the second nail tip 34 have the same outer contour line, and the two are axially symmetrical about the longitudinal center axis of the staple.

[0041] Those skilled in the art can understand that, in this embodiment, the second nail tip 34 and the first nail tip 24 also have the same outer contour line, and the two are axisymmetric about the longitudinal center axis of the staple, which will not be described in detail here.

[0042] like Figure 2 As shown, in this improvement, the first nail tip 24 is formed as a whole into a folded line tip structure, that is, the outer bevel of the first nail tip 24 includes a first outer bevel 241 and a second outer bevel 242, wherein the first outer bevel 241 and the second outer bevel 242 respectively form an angle less than 90° and equal to the normal plane of the inner side surface of the first nail leg upper part 23, and the angle between the first outer bevel 241 and the second outer bevel 242 is less than or equal to 90°, that is, the first nail tip 24 is formed as a whole into a protruding folded line tip structure, and the first outer bevel 241 and the second outer bevel 242 cross the side edge 2421 to form a top blade.

[0043] Those skilled in the art can understand that the central section and the cross section of the staple are perpendicular to each other. In this embodiment, the first outer bevel 241 and the second outer bevel 242 are symmetrically arranged along the central section to form a protruding section-symmetrical broken line point structure.

[0044] Those skilled in the art can understand that, in this embodiment, the angles between the first outer bevel 241 and the second outer bevel 242 and the normal plane of the inner side surface of the first nail leg upper portion 23 are respectively less than 90° and are equal, and the angle between the first outer bevel 241 and the second outer bevel 242 is greater than 90°, that is, the first nail tip 24 is formed as a whole into a recessed fold line tip structure.

[0045] Furthermore, in order to further improve the suturing effect of the staples, Figure 2 Based on the above-mentioned embodiments, the present invention further provides another improved nail tip structure, wherein: Figure 3-4 This improvement of the invention is shown.

[0046] like Figure 3-4 As shown, in this improvement, the first nail tip 24 is formed as a triangular pyramid structure as a whole, and the outer bevel of the first nail tip 24 includes a first outer bevel 241, a second outer bevel 242 and a third outer bevel 243. The first outer bevel, the second outer bevel and the third outer bevel are crossed in pairs to form a top triangular pyramid structure blade, that is, the first outer bevel 241 and the second outer bevel 242 are crossed to form a side edge 2421, the first outer bevel 241 and the third outer bevel 243 are crossed to form a side edge 2422, and the second outer bevel 242 and the third outer bevel 243 are crossed to form a side edge 2423. The three side edges are formed into a triangular pyramid structure.

[0047] Furthermore, the first outer bevel 241 and the second outer bevel 242 have the same angle with the third outer bevel 243, and the angle between the third outer bevel 243 and the normal plane of the inner surface of the first nail leg upper part 23 is greater than 90°, so that the vertex of the triangular pyramid is the farthest end of the first nail tip 24 along its length direction.

[0048] exist Figure 3-4In the illustrated embodiment, the triangular pyramid structure is specifically a convex triangular pyramid structure, but this is not limited here, and the triangular pyramid structure may also be a concave triangular pyramid structure or a flat triangular pyramid structure.

[0049] In order to improve the quality of surgery and ensure that the staples have sufficient penetration strength, so that they can more easily penetrate human tissue and obtain excellent suturing effect, the present invention further provides an improved staple tip structure, wherein: Figure 5 This improvement of the invention is shown.

[0050] like Figure 5 As shown, taking the first nail tip 24 as an example, a groove is formed below the outer inclined surface to form a recessed peripheral blade.

[0051] like Figure 5 As shown, still taking the first nail tip 24 as an example, the first nail tip 24 has an outer bevel 244, the angle between the outer bevel 244 and the normal plane of the inner side surface of the first nail leg upper portion 23 is less than 90°, and a groove 245 is formed below the outer bevel 244, and the center plane where the groove 245 is located is parallel to the plane where the outer bevel 244 is located. In addition, the depth of the groove 245 can be designed by those skilled in the art according to actual conditions, as long as the anastomotic staples have sufficient penetration strength.

[0052] Preferably, the contour line of the groove 245 away from the upper portion 23 of the first nail leg coincides with the outer contour line of the outer inclined surface 244 , thereby forming an annular recessed peripheral blade 4 .

[0053] Preferably, a discontinuous peripheral blade 4 is formed with a portion of the outer contour line surrounding the outer bevel 244 as an edge line.

[0054] Furthermore, in order to further improve the suturing effect of the staples, Figure 5 Based on the above-mentioned embodiments, the present invention continues to provide another improved nail tip structure, wherein: Figure 6 This improvement of the invention is shown.

[0055] like Figure 6 As shown, taking the second nail tip 24 as an example, the width of the area from the upper part of the first nail leg to the outer bevel below the outer bevel gradually increases to form a protruding peripheral blade.

[0056] like Figure 6 As shown, still taking the first nail tip 24 as an example, in this improvement, the width of the area from the upper portion 23 of the first nail leg to the outer bevel 244 gradually increases. In addition, those skilled in the art can design the gradually increasing width according to actual conditions as long as the anastomosis staples have sufficient penetration strength.

[0057] Preferably, the contour line of the gradually increasing width away from the upper portion 23 of the first nail leg coincides with the outer contour line of the outer inclined surface 244 , thereby forming an annular protruding peripheral blade 5 .

[0058] Preferably, the portion of the outer contour line surrounding the outer bevel 244 is used as an edge line, and the width of the first nail leg 2 and the second nail leg 3 gradually transitions to the edge line to form a discontinuous peripheral blade 5.

[0059] Those skilled in the art can understand that, in this embodiment, the second nail tip 34 and the first nail tip 24 also have the same outer contour line, and the two are axisymmetric about the longitudinal center axis of the staple, which will not be described in detail here.

[0060] Through the above design, the anastomotic staples provided by the present invention have more cutting edges, which increases the sharpness of the staples when inserted into human tissues, can reduce the resistance encountered by the staples when piercing human tissues, ensure the stable forming of the staples, and have a better anastomosis effect without causing bleeding from the wound.

[0061] In addition, the present invention also provides a stapler, which uses the above-mentioned stapler provided by the present invention.

[0062] It should be noted that, in this article, relational terms are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0063] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An anastomotic staple, comprising a staple crown, a first staple leg and a second staple leg, wherein the first staple leg and the second staple leg are respectively arranged at two ends of the staple crown and extend on the same side, and the ends of the first staple leg and the second staple leg are both formed with staple tips, the staple tips of the first staple leg and the second staple leg have the same outer contour line and are axially symmetrical about the longitudinal center axis of the staple, characterized in that: The nail tip has at least one outer bevel, and the angle between the outer bevel and the normal plane of the inner side surface of the upper part of the first nail leg is not 180° to form a peripheral blade structure; the angle between the nail crown and the first nail leg or the second nail leg is an obtuse angle, wherein the angle between the outer bevel and the normal plane of the inner side surface of the upper part of the first nail leg is less than 90°, and a groove is formed under the outer bevel, the center plane where the groove is located is parallel to the plane where the outer bevel is located, and the contour line of the groove away from the upper part of the first nail leg coincides with the outer contour line of the outer bevel to form a ring-shaped recessed peripheral blade.

2. An anastomotic staple, comprising a staple crown, a first staple leg and a second staple leg, wherein the first staple leg and the second staple leg are respectively arranged at two ends of the staple crown and extend on the same side, and the ends of the first staple leg and the second staple leg are both formed with staple tips, the staple tips of the first staple leg and the second staple leg have the same outer contour line and are axially symmetrical about the longitudinal center axis of the staple, characterized in that: The nail tip has at least one outer bevel, and the angle between the outer bevel and the normal plane of the inner side surface of the upper part of the first nail leg is not 180° to form a peripheral blade structure; the angle between the nail crown and the first nail leg or the second nail leg is an obtuse angle, wherein the width of the area from the upper part of the first nail leg to the outer bevel gradually increases, and the increasing width coincides with the outer contour line of the outer bevel away from the upper part of the first nail leg, thereby forming a ring-shaped protruding peripheral blade.

3. An anastomotic staple, comprising a staple crown, a first staple leg and a second staple leg, wherein the first staple leg and the second staple leg are respectively arranged at two ends of the staple crown and extend on the same side, and the ends of the first staple leg and the second staple leg are both formed with staple tips, the staple tips of the first staple leg and the second staple leg have the same outer contour line and are axially symmetrical about the longitudinal center axis of the staple, characterized in that: The nail tip has at least one outer bevel, and the angle between the outer bevel and the normal plane of the inner side surface of the upper part of the first nail leg is not 180° to form a triangular pyramid; the angle between the nail crown and the first nail leg or the second nail leg is an obtuse angle, wherein the outer bevel includes a first outer bevel, a second outer bevel and a third outer bevel, and the first outer bevel and the second outer bevel respectively have angles less than 90° and are equal to the normal plane of the inner side surface of the upper part of the first nail leg, and the angle between the first outer bevel and the second outer bevel is not 180°, and the first outer bevel, the second outer bevel and the third outer bevel cross each other to form a top triangular pyramid blade structure, wherein the end of the upper part of the first nail leg is formed as a first nail tip, and the angle between the first outer bevel and the second outer bevel is less than or equal to 90°, that is, the first nail tip is formed into a protruding broken line tip structure.

4. The stapler according to claim 3, characterized in that: The first outer bevel and the second outer bevel are symmetrically arranged along the central section, thereby forming a section-symmetrical broken line tip blade structure.

5. The stapler according to claim 3, characterized in that: The angle between the first outer bevel and the second outer bevel enables the nail tip to be formed into a recessed folded line tip structure or a protruding folded line tip structure.

6. The stapler according to claim 3, characterized in that: The first outer bevel and the second outer bevel have the same included angle with the third outer bevel respectively, and the included angle between the third outer bevel and the normal plane of the inner side surface of the upper part of the first nail leg is greater than 90°, so that the vertex of the triangular pyramid is the farthest end of the first nail tip along its length direction.

7. The stapler according to claim 3, characterized in that: The triangular pyramid structure is one of a convex pyramid structure, a concave triangular pyramid structure and a flat triangular pyramid structure.

8. A stapler, characterized in that: The stapler is equipped with the stapler according to any one of claims 1-7.

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