Linear cutting anastomat under endoscope

Abstract

The utility model relates to the technical field of medical instruments, and discloses a linear cutting anastomat under an endoscope, which comprises a main body, a nail box seat connected on the main body, and a nail box cover hinged on the nail box seat and capable of generating angular displacement relative to the nail box seat, and a nail bin is arranged between the nail box seat and the nail box cover. An elastic piece is connected between the nail box cover and the nail bin in an abutting mode, so that the nail box cover can generate the tendency of being closed and opened towards the nail box base under the action of external force and elastic deformation of the elastic piece, the end, connected to the nail bin in an abutting mode, of the elastic piece is a ball, and a groove is formed in the position, corresponding to the ball, of the nail bin. According to the linear cutting anastomat, the elastic piece can further fix the nail bin, and when the nail bin is interfered by an affected part in follow-up operation, the nail bin can be located on the nail box seat more stably; the nail bin cover can be prevented from being stressed, so that the nail bin cover is prevented from being separated from the nail bin in advance.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a linear cutting anastomosis device for laparoscopy. Background Technology

[0002] The linear stapler is primarily used in laparoscopic surgery, enabling simultaneous cutting and suturing of tissue. It mainly consists of the stapler body, staple cartridge, cutting blade, and operating handle. During surgery, the surgeon inserts the stapler into the body through the laparoscope. Once it reaches the surgical site, the surgeon adjusts the position and angle of the stapler using the operating handle. After identifying the tissue to be treated, the stapler is activated. The internal mechanical mechanism pushes the staples in the cartridge through the tissue, firmly fixing it in place. Simultaneously, the cutting blade cuts the tissue, completing the cutting and anastomosis operation before the stapler is withdrawn from the body. The linear stapler is suitable for minimally invasive surgery and offers precision and efficiency.

[0003] In linear staplers, the staple cartridge and the stapler body are generally designed separately. The staple cartridge and its cover are attached to the stapler during the surgical preparation stage. When installing the staple cartridge and activating the staples, the head of the stapler must be in an open state. When entering the abdominal cavity via the endoscope, the head of the stapler must be in a closed state. The component that keeps the head of the stapler open is generally an elastic body.

[0004] Traditional linear cutting staplers, such as those attached Figure 1 As shown, one end of the elastic body a is snapped into the staple cartridge f, and the other end abuts against the stapler body g. This structure and connection method of the elastic body a is unstable, and it is easy to detach from the staple cartridge if an external force is applied incorrectly.

[0005] To address this deficiency, such as Figure 2 As shown, Chinese patent CN207804298U discloses a stapler opening device for a laparoscopic linear cutting stapler, which proposes to design the elastic body a' as a V-shaped structure, and fix one end of the elastic body b to the stapler body g', while the other end is used to act on the staple cartridge f'.

[0006] However, this structure has a new drawback: the staple cartridge is attached to the front end of the stapler along with its cap during installation. The cap only needs to be removed before surgery. During the insertion process, firstly, the elastic body b only exerts a force to restore the deformation of the staple cartridge and does not provide any additional fixation. Secondly, the elastic body b also exerts a force on the cap. If the force is not applied properly, the cap may detach during insertion, which will cause the staple cartridge to be exposed prematurely and become ineffective. Utility Model Content

[0007] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one objective of the present invention is to provide a laparoscopic linear cutting anastomosis device.

[0008] According to the present invention, a linear cutting anastomosis device for laparoscopy includes a main body and a staple cartridge seat connected to the main body, and a staple cartridge cover hinged to the staple cartridge seat and capable of angular displacement relative to the staple cartridge seat, wherein a staple chamber is provided between the staple cartridge seat and the staple cartridge cover.

[0009] Specifically, after the main body is connected to the handle, it can control the nail cartridge seat and nail cartridge cover to rotate, open and close. It can also activate the staples in the cartridge and apply them to the affected area. The specific structure and operating principle of the main body are existing technologies and will not be described in detail here.

[0010] Unlike traditional linear cutting staplers, this stapler has an elastic element between the staple cartridge cover and the staple chamber, which allows the staple cartridge cover to tend to close and open towards the staple cartridge seat under the action of external force and the elastic deformation of the elastic element. The end of the elastic element that abuts against the staple chamber is a ball, and a groove is provided on the staple chamber at the position corresponding to the ball.

[0011] The advantage of this design is that when the staple cartridge is attached to the staple holder, the elastic element deforms due to the interference of the staple cartridge until the ball aligns with the groove on the staple cartridge. The elastic element can further fix the staple cartridge in place. When the staple cartridge is interfered with by the affected area during subsequent surgical procedures, it can be more stably positioned on the staple holder. In addition, when the ball falls into the groove, it can produce a noticeable tactile feedback or clicking sound, thus reminding the doctor that the staple cartridge is installed in place.

[0012] In some examples of this utility model, the middle part of the elastic element is connected to the nail box cover; specifically, the middle part of the elastic element is bent to form a through hole, and the nail box cover and the through hole are connected by a shaft.

[0013] In some examples of this utility model, the elastic element includes a first extension and a second extension that extend along both sides of the through hole and form an angle with each other;

[0014] The purpose of this design is to allow the first extension to act on the nail cartridge cover, increasing the contact area between the elastic element and the nail cartridge cover, ensuring the support performance of the elastic element at the nail cartridge cover, while the second extension can extend to the nail cartridge.

[0015] In some examples of this utility model, there are two through holes and corresponding first and second extensions, the two first extensions are connected by a crossbeam, and the end of each second extension away from the through hole is connected to a sphere.

[0016] The purpose of this design is that the two through holes and the corresponding two first extensions and two second extensions give the elastic element greater stability. There are also two spheres corresponding to the second extensions, which better adapts to the structure of the staple cartridge. The crossbeam further increases the stability of the elastic element and allows the elastic element to be integrally molded, which is convenient for manufacturing.

[0017] In some examples of this utility model, the nail box cover is provided with a limiting groove for the first extension and the crossbeam to be inserted;

[0018] The purpose of this design is to limit the position of the first extension and the crossbeam on the elastic element, and to ensure that the position of the second extension is also stable, so as to prevent the elastic element from shaking before it is inserted into the cartridge.

[0019] In some examples of this utility model, a staple cartridge cover is also included, and a clearance groove is formed on the staple cartridge cover at a position corresponding to the groove body. The clearance groove extends to the end of the staple cartridge cover to form an opening groove, so that the elastic element can pass through the clearance groove to reach the groove body.

[0020] The purpose of this design is that when the staple cartridge cover is placed into the staple cartridge holder along with the staple cartridge, the second extension can bypass the staple cartridge cover through the clearance groove and be placed into the slot of the staple cartridge, thus avoiding the staple cartridge cover being subjected to force and preventing it from coming off the staple cartridge during insertion.

[0021] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram showing the installation of the elastic body in a traditional linear cutting stapler in the background art;

[0024] Figure 2 This is a schematic diagram of the installation of the elastic body of the nail seat opening device disclosed in patent CN207804298U in the background art;

[0025] Figure 3 This is a cross-sectional view of the endoscopic linear cutting anastomosis device in an embodiment of this utility model;

[0026] Figure 4 Appendix to the embodiments of this utility model Figure 3Detailed view at point A;

[0027] Figure 5 This is a perspective view of the elastic element in an embodiment of this utility model;

[0028] Figure 6 This is a front view of the staple cartridge in an embodiment of this utility model;

[0029] Figure 7 This is a front view of the nail cartridge cover in an embodiment of this utility model;

[0030] Figure 8 This is a front view of the staple cartridge cover fastened to the staple cartridge in an embodiment of this utility model.

[0031] Explanation of reference numerals in the attached figures:

[0032] Main body 100;

[0033] Nail holder 200;

[0034] Nail box cover 300, shaft 310, limiting groove 320;

[0035] Staple cartridge 400, slot 410, working area 420, cutting slot 430;

[0036] Elastic element 500, ball 510, through hole 520, first extension 530, second extension 540, crossbeam 550;

[0037] Spike cartridge cover 600, clearance groove 610. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0039] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0040] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0042] The following is for reference. Figures 3-8 The description shown is of a laparoscopic linear cutting stapler provided in an embodiment of this utility model.

[0043] For details, please see the appendix. Figure 3 This is a cross-sectional view of a laparoscopic linear cutting stapler. The stapler includes a main body 100 and a staple cartridge seat 200 connected to the main body 100, and a staple cartridge cover 300 hinged to the staple cartridge seat 200 and capable of angular displacement relative to the staple cartridge seat 200. A staple cartridge 400 is provided between the staple cartridge seat 200 and the staple cartridge cover 300.

[0044] The main body 100 adopts the specific structure and principle of the traditional linear cutting stapler. The staple cartridge seat 200 is used to install the staple cartridge 400 and is connected to the staple cartridge 400 by a snap-fit. The specific structure of the snap-fit ​​also adopts the traditional linear cutting stapler. The staple cartridge cover 300 can generate a tendency to open or close towards the staple cartridge seat 200 to protect the staple cartridge 400. Its specific structure also adopts the traditional linear cutting stapler.

[0045] Please see the appendix Figure 4 , for appendix Figure 3 In the detailed view at point A, there is an elastic element 500 abutting between the nail box cover 300 and the nail chamber 400;

[0046] The function of the elastic element 500 is to enable the staple cartridge cover 300 to tend to close and open towards the staple cartridge seat 200 under the action of external force and the elastic deformation of the elastic element 500. The external force is generally applied through the handle and mechanical structure on the stapler body 100. Its specific composition and principle are also the same as those of the traditional linear cutting stapler, which will not be elaborated here.

[0047] In some other embodiments, the external force can also be transmitted to the nail box holder 200, so that the nail box holder 200 tends to close and open towards the nail box cover 300 under the action of the external force and the elastic deformation of the elastic element 500.

[0048] Please continue reading the appendix. Figure 4 ~Attached Figure 6 , including Figure 5 This is a 3D diagram of the elastic element 500, attached. Figure 6 This is a front view of the staple cartridge 400, attached. Figures 4-5 The end of the elastic element 500 that abuts against the nail cartridge 400 is a sphere 510, which allows the attached... Figure 4 Appendix Figure 6 It can be seen that a groove 410 is provided on the staple cartridge 400 at the position corresponding to the sphere 510. The groove 410 is specifically an arc-shaped groove that is adapted to the end face of the sphere 510.

[0049] Please continue reading the appendix. Figure 6 The staple cartridge 400 includes a working area 420 for installing staples, one end close to the main body 100, the other end away from the main body 100, and a cutting groove 430 extending from one end into the working area 420. The groove body 410 has two parts, which are respectively located on both sides of the cutting groove 430 at the end close to the main body 100.

[0050] The purpose of this arrangement is that the interference of the elastomer on the staple cartridge 400 will not affect the activation of the staples or the cutting operation of the cutting blade. Furthermore, the presence of a groove 410 and an interference groove 410 with spheres 510 on both sides of the cutting groove 430 can provide stability to the staple cartridge 400.

[0051] Please continue reading the appendix. Figure 4 ~Attached Figure 5 The middle part of the elastic element 500 is connected to the nail box cover 300; specifically, the middle part of the elastic element 500 is bent to form a through hole 520, and the nail box cover 300 and the through hole 520 are connected by a shaft 310, wherein the shaft 310 is fixedly installed on the nail box cover 300.

[0052] Please continue reading the appendix. Figure 5 The elastic element 500 includes a first extension 530 and a second extension 540 extending along both sides of the through hole 520 and forming an angle with each other. There are two through holes 520 and corresponding first extensions 530 and second extensions 540. The two first extensions 530 are connected by a crossbeam 550. The end of each second extension 540 away from the through hole 520 is connected to a ball 510.

[0053] Please continue reading the appendix. Figure 5 The nail box cover 300 is provided with a limiting groove 320 for inserting the first extension 530 and the crossbeam 550. The limiting groove 320 is provided on the side of the nail box cover 300 facing the nail box seat 200 to limit the first extension 530 and the crossbeam 550.

[0054] Please continue reading the appendix. Figure 4 Appendix Figure 7 , including Figure 7 This is a front view of the staple cartridge cover 600. The stapler also includes a staple cartridge cover 600. A clearance groove 610 is formed on the staple cartridge cover 600 at a position corresponding to the groove 410. The clearance groove 610 extends to the end of the staple cartridge cover 600 to form an opening groove, thereby avoiding the second extension 540 on the elastic member 500.

[0055] Please see the appendix Figure 8 , attached Figure 8 This is a front view of the staple cartridge cover 600 fastened to the staple cartridge 400, with the slot 410 exposed in the clearance slot 610, allowing the second extension 540 on the elastic member 500 to pass through the clearance slot 610 and reach the slot 410.

[0056] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0057] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A laparoscopic linear cutting anastomosis device, comprising a main body and a staple cartridge seat connected to the main body, and a staple cartridge cover hinged to the staple cartridge seat and capable of angular displacement relative to the staple cartridge seat, wherein a staple magazine is disposed between the staple cartridge seat and the staple cartridge cover, characterized in that, An elastic element abuts against the nail cartridge cover and the nail chamber, allowing the nail cartridge cover to tend to close and open towards the nail cartridge seat under the action of external force and the elastic deformation of the elastic element. One end of the elastic element abutting against the nail chamber is a sphere, and a groove is provided on the nail chamber at a position corresponding to the sphere.

2. The laparoscopic linear cutting stapler according to claim 1, characterized in that, The middle part of the elastic element is connected to the nail box cover.

3. The laparoscopic linear cutting stapler according to claim 2, characterized in that, The elastic element is bent in the middle to form a through hole, and the nail box cover is connected to the through hole by a shaft.

4. The laparoscopic linear cutting stapler according to claim 3, characterized in that, The elastic element includes a first extension and a second extension that extend along both sides of the through hole and form an angle with each other.

5. The laparoscopic linear cutting stapler according to claim 4, characterized in that, There are two through holes and corresponding first and second extensions. The two first extensions are connected by a crossbeam. The end of each second extension away from the through hole is connected to the sphere.

6. The laparoscopic linear cutting stapler according to claim 5, characterized in that, The nail box cover has a limiting groove for inserting the first extension and the crossbeam.

7. A laparoscopic linear cutting stapler according to any one of claims 1 to 6, characterized in that, It also includes a staple cartridge cover, on which a clearance groove is formed at a position corresponding to the groove body. The clearance groove extends to the end of the staple cartridge cover to form an opening groove, so that the elastic element can pass through the clearance groove to reach the groove body.

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