阅读说明：本技术 一种医用吻合器 (Medical anastomat ) 是由 贲晓松 彭晓维 乔贵宾 韩艳秋 郑俊杰 陈冠伦 朱裕婷 王宇 张应腾 俞晓立 于 2019-09-09 设计创作，主要内容包括：本发明公开了一种医用吻合器,属于医疗器械领域。为了解决因增加钉合组织而可能导致吻合口狭窄和吻合口处的组织血运不好的问题,本发明改变钉砧吻合截面、钉仓吻合截面和吻合钉的高度,改善吻合口狭窄和吻合口处组织的血运。(The invention discloses a medical anastomat, and belongs to the field of medical instruments. In order to solve the problems of narrow anastomotic orifice and poor blood transportation of tissues at the anastomotic orifice caused by the increase of the stapled tissues, the invention changes the anastomotic section of the nail anvil, the anastomotic section of the nail bin and the height of the anastomotic nail and improves the blood transportation of the tissues at the anastomotic orifice and the stenotic orifice.)

1. The utility model provides a medical anastomat, includes anastomosis portion and operation portion, and anastomosis portion includes nail storehouse, nail anvil, nail pushing portion and anastomosis nail, nail pushing portion includes the nail pushing sheet, the nail pushing sheet supports the anastomosis nail, the nail storehouse is provided with nail storehouse hole, nail storehouse hole holds the anastomosis nail, the nail anvil is provided with nail hammering block hole, the anastomosis nail is in under the promotion of nail pushing sheet nail anvil hole shaping, its characterized in that: the nail bin, the nail anvil and the nail pushing part are provided with two elliptic rows of nails or three elliptic rows of nails.

2. The medical stapler of claim 1, wherein: the section of the nail bin is a stepped section with a high inner part and a low outer part, and the section of the nail anvil is a plane.

3. The medical stapler of claim 1, wherein: the section of the nail anvil is a stepped section with a high inner part and a low outer part, and the section of the nail bin is a plane.

4. The medical stapler of claim 1, wherein: the section of the nail bin is a stepped section with a high inner part and a low outer part, and the section of the nail anvil is a stepped section with a high inner part and a low outer part.

5. The medical stapler of claim 1, wherein: the section of the nail bin is a plane, and the section of the nail anvil is a plane.

6. The medical stapler of any one of claims 2-5, wherein: the heights of three rows of the anastomosis nails are equal.

7. The medical stapler of any one of claims 2-5, wherein: the heights of the three rows of the anastomosis nails are sequentially increased from inside to outside.

8. The medical stapler of any one of claims 2-5, wherein: the heights of the three rows of anastomosis nails are reduced from inside to outside in sequence.

9. The medical stapler of any one of claims 2-5, wherein: the height arrangement of the anastomosis nails from inside to outside is high-low-medium, low-high-medium, medium-low-high and medium-high-low.

10. The medical stapler of claim 1, wherein: the anvil is configured to fold over relative to the staple cartridge.

Technical Field

The invention belongs to the technical field of medical instruments, and particularly relates to a medical anastomat.

Background

Surgical procedures often require anastomosis of two hollow organs and tissues, such as esophagus and stomach (or colon), intestine, ureter, fallopian tube, biliary tract, and blood vessels, among others. The traditional anastomosis technology is to anastomose two cavity organs and tissues by using a suture, has reliable effect, but is complex to operate and has high technical requirement.

In recent years, with the development of staplers, two hollow organs or tissues may be anastomosed together by staples. The anastomat has simple operation and reliable effect.

The existing anastomat generally adopts two rows of nails for anastomosis, and the possibility of anastomotic leakage caused by less stapled tissues exists. Thus, a three-row staple design has appeared to increase stapled tissue and reduce anastomotic leakage, but this may result in narrow anastomotic orifices and poor tissue blood transport at the anastomotic orifice. How to realize multiple anastomotic tissues, avoid the stenosis of the anastomotic orifice and improve the tissue blood transportation at the anastomotic orifice is a problem which needs to be solved urgently in clinic.

disclosure of Invention

In order to overcome the defects of the prior art, the invention provides a medical anastomat which can not only realize multi-stapling of tissues, but also avoid the occurrence of anastomotic leakage, and simultaneously improve the tissue blood transportation at the anastomotic opening.

In order to achieve the purpose, the invention adopts the following technical scheme:

The utility model provides a medical anastomat, includes anastomosis portion and operating portion, and anastomosis portion includes nail storehouse, nail anvil, pushes away nail portion and coincide nail, it includes the nail pushing sheet to push away nail portion, the nail pushing sheet supports coincide nail, the nail storehouse is provided with nail storehouse hole, nail storehouse hole holds coincide nail, the nail anvil is provided with nail hammering block hole, coincide nail is in under the promotion of nail pushing sheet nail point nail hole shaping, the nail storehouse nail anvil with it sets up to two rows of nails of ellipse or three rows of nails of ellipse to push away nail portion.

Preferably, the amount of stapled tissue can be adjusted by adjusting the spacing between the two rows of staples.

Further, the section of the nail bin is a stepped section with a high inside and a low outside, and the section of the nail anvil is a plane.

Further, the section of the nail anvil is a stepped section with a high inside and a low outside, and the section of the nail bin is a plane.

Further, the section of the nail bin is a stepped section with a high inside and a low outside, and the section of the nail anvil is a stepped section with a high inside and a low outside.

Further, the section of the nail bin is a plane, and the section of the nail anvil is a plane.

Furthermore, the heights of the three rows of the staples are equal.

Furthermore, the heights of the three rows of the anastomosis nails are sequentially increased from inside to outside.

Furthermore, the heights of the three rows of anastomosis nails are sequentially reduced from inside to outside.

Further, the height arrangement of the anastomosis nails from inside to outside is high-low-medium, low-high-medium, medium-low-high, medium-high-low.

Further, the anvil is configured to fold relative to the staple cartridge.

Compared with the prior art, the invention has the following beneficial effects: the nail anvil and the nail pushing part are arranged into two elliptic rows of nails or three elliptic rows of nails, so that the area of an anastomotic stoma can be increased and the stricture of the anastomotic stoma can be prevented compared with the design of two circular rows of nails or three circular rows of nails.

Drawings

FIG. 1A is a schematic view of an elliptical stapler in its entirety.

FIG. 1B is a general schematic view of an elliptical stapler provided with an anvil that is foldable relative to the staple cartridge.

Fig. 2 is a schematic cross-sectional view of the nail bin with a stepped cross section with a high inside and a low outside, the nail anvil with a planar cross section, and the height of the anastomotic nails being equal along the short axis direction.

Fig. 3 is a schematic cross-sectional view of the nail bin with a stepped cross section with a high inside and a low outside, the nail anvil with a planar cross section, and the height of the anastomotic nails being unequal along the short axis direction.

Fig. 4 is a schematic cross-sectional view of the nail anvil with a stepped cross section with a high inside and a low outside, the nail bin with a planar cross section, and the height of the anastomotic nails being equal along the short axis direction.

Fig. 5 is a schematic cross-sectional view of the nail anvil with a stepped cross-section having a high inside and a low outside, the nail bin with a planar cross-section, and the height of the anastomotic nails being unequal along the short axis direction.

FIG. 6 is a cross-sectional view along the short axis direction of the nail anvil with a stepped cross-section having a high inside and a low outside, the nail cartridge with a stepped cross-section having a high inside and a low outside, and the height of the staples being equal.

FIG. 7 is a schematic cross-sectional view along the short axis direction of the nail anvil with a stepped cross-section having a high inside and a low outside, the nail cartridge with a stepped cross-section having a high inside and a low outside, and the heights of the staples being unequal.

FIG. 8 is a schematic cross-sectional view along the minor axis of the anvil and staple cartridge in planar cross-section with equal staple heights.

FIG. 9 is a schematic cross-sectional view along the minor axis of the anvil and staple cartridge in planar cross-section with unequal staple heights.

FIG. 10 is a schematic cross-sectional view of the nail anvil in a planar cross-section, the nail magazine in a stepped cross-section with a high inside and a low outside, and the two rows of staples in different heights along the short axis.

FIG. 11 is a schematic cross-sectional view of the anvil in a planar cross-section, the staple cartridge in a stepped cross-section with a high inside and a low outside, and the staple in two rows of equal height along the minor axis.

Reference numerals

10-anastomosis part 20-operation part 40-instrument central shaft

110, a nail pushing part 120, a staple 130, a nail box 140 and a nail anvil

111-innermost row of ejector pin blades 112-middle row of ejector pin blades 113-outermost row of ejector pin blades

131-innermost strip nail bin hole 132-middle strip nail bin hole 133-outermost strip nail bin hole

141-innermost row of anvil holes 142-middle row of anvil holes 143-outermost row of anvil holes

151-innermost row forming 152-middle row forming 153-outermost row forming

Detailed Description

The present invention will be further described with reference to the following embodiments. Wherein the drawings are simplified and schematic representations only for the purpose of illustration, and therefore are shown only for the purpose of illustrating the invention, rather than in the actual drawings, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The invention is described as being inward, which refers to being closer to the central axis 40 of the device (as shown in fig. 2), and thus, the description is outward, as opposed to inward, which refers to being farther from the central axis of the device.

The anastomosis operation is as follows: the operator operates the operation part to trigger the nail pushing part, so that the nail pushing sheet moves towards one end far away from the operator, the anastomotic nail is pushed to move, the tissue to be anastomosed enters, and finally the nail anvil is formed.

The medical stapler (as shown in fig. 1A) of the present invention comprises a stapling portion 10 and an operating portion 20, wherein a major axis a of an anvil 140 is longer than a minor axis b and is elliptical. Due to the adoption of the oval design, compared with a circular design, the area of an anastomotic stoma can be increased, and the occurrence of anastomotic stoma stenosis is reduced. In one embodiment (as shown in FIG. 1B), anvil 140 is configured to fold back relative to staple cartridge 130. When the anastomosis is finished and the withdrawal is needed, the nail anvil 140 can be turned over, so that the damage to the tissue is reduced.