阅读说明：本技术 具有高强度推钉片安装结构的钉仓以及包括它的吻合器 (Nail bin with high-strength nail pushing sheet mounting structure and anastomat comprising same ) 是由 舒拓 于 2020-04-09 设计创作，主要内容包括：本发明涉及了一种具有高强度推钉片安装结构的钉仓,包括钉仓本体。在该钉仓本体上设置有走刀槽以及用来容纳推钉片的容纳腔。容纳腔的数量设置为2,对称地分布于刀槽的左、右侧。就右侧容纳腔来说,其内设置有用来对推钉片进行导向的导向组件。导向组件包括有第一导向件、中心导向件、第二导向件以及加强臂,其中,中心导向件由容纳腔的底壁向上延伸而成。加强臂亦由容纳腔的底壁向上延伸而成,且连接于上述中心导向件之间。如此,上述各中心导向件之间相互关联、联系,以形成一个有机的受力整体,从而有效地杜绝了中心导向件由于独立受力而导致弯折情况的发生,确保中心导向件顺利地伸出以执行组织缝合操作。另外,本发明还公开了一种吻合器。(The invention relates to a nail bin with a high-strength nail pushing sheet mounting structure. The nail bin body is provided with a cutter trough and an accommodating cavity for accommodating the nail pushing sheet. The number of the accommodating cavities is 2, and the accommodating cavities are symmetrically distributed on the left side and the right side of the cutter groove. As for the right accommodating cavity, a guide assembly for guiding the ejector pin sheet is arranged in the right accommodating cavity. The guide assembly comprises a first guide part, a central guide part, a second guide part and a reinforcing arm, wherein the central guide part is formed by upwards extending the bottom wall of the accommodating cavity. The reinforcing arm is also formed by extending the bottom wall of the accommodating cavity upwards and is connected between the central guide pieces. Therefore, the central guide parts are mutually related and linked to form an organic stress whole, so that the bending condition of the central guide part caused by independent stress is effectively avoided, and the central guide part is ensured to smoothly extend out to perform tissue suturing operation. In addition, the invention also discloses an anastomat.)

1. The nail bin with the high-strength nail pushing sheet mounting structure comprises a nail bin body; the nail bin comprises a nail bin body and is characterized in that a feed trough and an accommodating cavity are arranged on the nail bin body, wherein the accommodating cavity is formed by downwards extending the outer back surface of the nail bin body and is used for accommodating nail pushing sheets, the number of the nail pushing sheets is 2, and the nail pushing sheets are symmetrically distributed on the left side and the right side of the feed trough; guide assemblies are arranged in the accommodating cavities; for the right accommodating cavity, the guide assembly comprises a plurality of first guide parts, a central guide part and a second guide part which are linearly arrayed along the length direction of the runner, wherein the first guide parts and the second guide parts are formed by extending the left side wall and the right side wall of the accommodating cavity oppositely and oppositely; the central guide part is formed by extending the bottom wall of the accommodating cavity upwards and is arranged in a staggered manner with the first guide part and the second guide part along the front-back direction, and the guide assembly is characterized by further comprising a reinforcing arm connected between the central guide parts; the reinforcing arms are arranged in a plurality, are arranged at intervals with the central guide piece and are also formed by upwards extending the bottom wall of the accommodating cavity.

2. The nail bin with the high-strength nail pushing plate mounting structure according to claim 1, wherein a limiting groove is formed in an outer side wall of the central guide.

3. The nail bin with the high-strength nail pushing sheet mounting structure according to claim 2, wherein the cross section of the limiting groove is in a flat-bottom V shape, and a limiting column is arranged in the limiting groove; the limiting column is formed by outwards extending the bottom wall of the limiting groove.

4. The staple cartridge with the high-strength ejector plate mounting structure according to any one of claims 1 to 3, wherein said guide assembly and said staple cartridge body are integrally injection-molded.

5. A stapler comprises a nail bin, a nail bin frame, a nail anvil and an adapter, wherein the nail bin and the nail bin frame are fastened and fixed and are arranged opposite to the nail anvil; the adapter, the nail cartridge frame and the nail anvil are hinged into a whole, and the nail cartridge is characterized in that the nail cartridge is the nail cartridge in any one of claims 1 to 4.

Technical Field

The invention relates to the technical field of medical appliance manufacturing, in particular to a nail bin with a high-strength nail pushing sheet mounting structure and an anastomat comprising the same.

Background

In laparoscopic surgery and thoracoscopic surgery, the laparoscopic cutting stapler is generally used for cutting and anastomosis operations of esophagus, stomach, duodenum, small intestine, colon, rectum, appendix, gallbladder, pancreas, spleen and the like in the digestive tract, for cutting and anastomosis operations of lung, trachea and the like in the respiratory tract, and for cutting and anastomosis operations of bladder, uterus and the like in the urogenital system, and through the application, the surgical wound can be greatly reduced, the operation time can be shortened, and the operation quality can be improved.

Generally, the nail bin and the nail bin frame are fixed into a whole, and a cutter path is arranged along the length direction of the nail bin and the nail bin frame. The tissue is placed between the nail bin and the nail anvil, at the moment, the nail pushing sheet is arranged in the nail bin, the trigger handle is pulled, the nail pushing sheet gradually extends out of the accommodating cavity under the action of oblique force, namely, two rows of staggered nails are placed into the tissue and bent into a B shape, and then the tissue is sutured. In this case, it is necessary to provide a guide member in the housing cavity in order to ensure the displacement orientation of the nail-pushing piece. The guide assembly is generally composed of a first guide member, a middle guide member and a second guide member, and as can be seen from fig. 1, the first guide member and the second guide member are formed by directly extending left and right side walls of the accommodating cavity, so that the guide assembly has good structural strength. As shown in fig. 2, the central guiding member is separately disposed in the accommodating cavity and made of plastic, so that the central guiding member has a lower structural strength, and therefore, the central guiding member is also bent and deformed under the action of the oblique force during the percussion process, so that the nail pushing plate cannot be pushed out normally, thereby affecting the normal operation of the combined suturing process. Thus, a skilled person is urgently needed to solve the above problems.

Disclosure of Invention

The invention aims to solve the technical problem of providing a nail bin with a high-strength nail pushing piece mounting structure, which is simple in structural design, effectively avoids the bending deformation of a central guide piece, and ensures that a nail pushing piece is smoothly pushed out of the nail bin to finish the sewing process.

In order to solve the technical problem, the invention relates to a nail bin with a high-strength nail pushing sheet mounting structure, which comprises a nail bin body. The nail bin body is provided with a knife-moving groove and an accommodating cavity. The containing cavities are formed by extending the outer back surface of the nail bin body downwards and are used for placing nail pushing sheets, the number of the containing cavities is 2, and the containing cavities are symmetrically distributed on the left side and the right side of the feed groove. And guide assemblies are arranged in the accommodating cavities. For the right accommodating cavity, the inner guide assembly comprises a plurality of first guide parts, a central guide part and a second guide part which are linearly arrayed along the length direction of the runner, wherein the first guide parts and the second guide parts are formed by extending the left side wall and the right side wall of the accommodating cavity oppositely and oppositely arranged. The central guide part is formed by upwards extending the bottom wall of the accommodating cavity and is arranged along the left-right direction in a staggered manner with the first guide part and the second guide part. The guide assembly further includes a reinforcing arm connected between the central guide members. The reinforcing arms are provided in a plurality, spaced apart from the central guide and also extend upwardly from the bottom wall of the receiving chamber.

As a further improvement of the technical scheme of the invention, a limit groove is arranged on the outer side wall of the central guide piece.

As a further improvement of the technical scheme of the invention, the cross section of the limiting groove is in a flat-bottom V shape, and a limiting column is arranged in the limiting groove. The limiting column is formed by outwards extending the bottom wall of the limiting groove.

As a further improvement of the technical scheme of the invention, the guide assembly and the nail bin body are preferably molded in an integral injection molding mode.

Compared with the nail bin with the traditional design structure, in the technical scheme disclosed by the invention, the reinforcing arms are additionally arranged between the central guide pieces with relatively weak structural strength to form an organic stress whole, so that the independent stress condition of the central guide pieces is effectively avoided, the bending phenomenon caused by the oblique force is avoided, and the central guide pieces are ensured to smoothly extend out to perform tissue suturing operation.

The invention also provides a anastomat matched with the nail bin.

In order to solve the technical problem, the invention also relates to a stapler which comprises the nail bin, the nail bin frame, the nail anvil and the adapter in the technical scheme, wherein the nail bin and the nail bin frame are fastened and fixed and are opposite to the nail anvil. The adapter, the nail bin frame and the nail anvil are hinged into a whole.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a perspective view of a prior art staple cartridge.

Fig. 2 is an enlarged view of a portion I of fig. 1.

Fig. 3 is a perspective view of the stapler of the present invention.

FIG. 4 is a perspective view of a staple cartridge having a high strength staple pusher tab mounting structure according to the present invention.

Fig. 5 is a partial enlarged view II of fig. 4.

Fig. 6 is a top view of fig. 4.

Fig. 7 is a partially enlarged view III of fig. 6.

1-nail bin; 11-a nail bin body; 111-a gate; 112-a receiving cavity; 1121-a guide assembly; 11211 — a first guide; 11212-center guide; 112121-limit groove; 1121211-limit post; 11213-a second guide; 11214-reinforcement arms; 2-nail bin rack; 3-nail anvil; 4-adapter.

Detailed Description

In the description of the present invention, it is to be understood that the terms "front", "rear", "left", "right", "upper", "lower", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

The present invention will be further described in detail with reference to the following embodiments, and fig. 3 shows a perspective view of the stapler of the present invention, which is mainly composed of a staple cartridge 1, a staple cartridge frame 2, a nail anvil 3, and an adaptor 4, wherein the staple cartridge 1 and the staple cartridge frame 2 are fastened and fixed and are opposite to the nail anvil 3 along the up-down direction. The adapter 4, the nail bin frame 2 and the nail anvil 3 are hinged into a whole. The stapler works substantially as follows when performing tissue stapling: firstly, tissues need to be clamped between the anastomotic surfaces of the nail bin 1 and the nail anvil 3, at the moment, a nail pushing sheet is pre-installed in the nail bin 1, the exciting handle is pulled, the nail pushing sheet gradually extends downwards under the action of oblique force, namely, two rows of staggered nails are placed into the tissues and bent into a B shape, and then the tissues are sutured.

In order to ensure that the staple pushing plate smoothly extends to perform tissue suturing operation, the technical scheme disclosed by the invention applies the staple cartridge with a high-strength staple pushing plate mounting structure, and the specific structure of the staple cartridge is described in detail as follows: for convenience of description, the main body of the magazine 1 is referred to as a magazine body 11. The magazine body 11 is provided with a knife path 111 and a housing cavity 112. The accommodating cavities 112 are formed by extending the outer back surface of the nail bin body 11 downwards for placing nail pushing sheets, and the number of the accommodating cavities is set to be 2, and the accommodating cavities are symmetrically distributed on the left side and the right side of the knife path 111. Within the receiving cavity 112 is a guide member 1121 (shown in fig. 4). For the right receiving cavity 112, the inner guide component 1121 includes a plurality of first guide members 11211, a central guide member 11212 and a second guide member 11213, all arranged in a linear array along the length direction of the runner groove 111, wherein the first guide members 11211 and the second guide members 11213 are formed by extending the left and right side walls of the receiving cavity 112 in opposite directions. The center guide 11212 is formed by extending upward from the bottom wall of the accommodating chamber 112, and is displaced from the first guide 11211 and the second guide 11213 described above in the left-right direction (as shown in fig. 5). It should be noted that the guide assembly 1121 also includes a reinforcing arm 11214 connected between the central guide members 11212. The reinforcing arms 11214 are provided in a plurality, spaced from the central guide 11212, and also extend upwardly from the bottom wall of the housing cavity 112 (as shown in fig. 5, 6 and 7). In the above technical solution, the reinforcing arms 11214 are additionally arranged to make the central guide members 11212 form an organic stressed whole, which supports each other, thereby effectively avoiding the occurrence of independent stress on the central guide members 11212, avoiding the bending phenomenon caused by the oblique force, and ensuring that the central guide members 11212 smoothly extend from the nail cartridge 1 to perform the tissue suturing operation.

Here, the following two points also need to be explained: 1) the guide component 1121 and the staple cartridge body 11 are preferably formed by an integral injection molding method, so that the production and manufacturing costs of the anastomat are greatly reduced, and a large amount of time consumption and labor input during assembly are avoided; 2) the material for manufacturing the magazine body 11 is preferably any one of thermoplastic polyurethane plastic, polyether ether ketone plastic, and polyacetal plastic. As known, the three plastic materials have good structural strength and good thermal fluidity, and are convenient for fully filling a mold cavity; more importantly, the plastic material also has excellent self-lubricating property, so that the movement resistance of the nail pushing plate in the process of extending out of the nail bin 1 can be reduced to a certain degree, the probability of clamping stagnation is reduced, and the smooth execution of the suturing action of the anastomat is ensured.

As a further optimization of the above technical solution, a limit groove 112121 (as shown in fig. 5) may be further formed on an outer side wall of each central guide 11212, so as to effectively ensure the accuracy of the mounting position of the staple pushing plate, and enable the staple pushing plate to have excellent displacement guidance when receiving the excitation force, thereby ensuring the correct penetration and suturing of the tissue. However, it should be noted here that, when the nail-pushing piece is structurally designed, a stopper protrusion adapted to the stopper groove 112121 needs to be added to the outer side surface thereof.

A large number of experiments prove that the optimal application effect can be obtained when the limiting groove ginseng 112121 is designed according to the following structural form, which is specifically as follows: the cross section of the limiting groove 112121 is in a flat-bottom V shape, and a limiting column 1121211 is arranged in the limiting groove. The restraint posts 1121211 are formed by extending directly outwardly from the bottom wall of the restraint slot 112121 (as shown in fig. 6 and 7).

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.