CN104490436A - Leftwards bent cutting suture instrument - Google Patents

Abstract

The invention discloses a leftward curved cutting and stapling device, which comprises: upper and lower jaws and a closing handle; the front end of the upper jaw is provided with an anvil; the front end of the lower jaw is provided with a The nail bin corresponding to the nail anvil; the upper jaw is matched with the lower jaw, and an activation push button is connected to the rear end of the upper jaw and the lower jaw; the closing handle is matched with the lower jaw. The pin shaft of the lower jaw is connected to control the closing or opening of the upper jaw and the lower jaw; The long axis is bent to the left, and the bending arc is 10°～40°. The cutting and suturing device provided by the present invention can better fit the spherical surface of the tumor during the operation, and can reduce the damage to the healthy tissue under the condition of ensuring the complete resection of the lesion; The operation needs to combine and replace the staple cartridge components at will, which has strong practicability and low cost.

Description

A left-curved cutting stapler

technical field

The invention relates to the field of surgical medical instruments, in particular to a left-curved cutting and stapler.

Background technique

In 1908, Hungarian doctor Humer completed the first mechanized operation in human history with bulky suturing instruments in Budapest, opening the chapter of surgical staplers. Up to now, the surgical stapler has a history of more than 100 years, and it is no longer complicated in design, many parts, difficult to install, and inconvenient to use; modern cutting stapler can automatically close the tissue, suturing and cutting at one time, simple operation, neat staples unanimous. Compared with traditional manual suturing, suturing with surgical cutter and stapler can effectively improve the safety of surgery and simplify the operation steps, which is of great benefit to both doctors and patients.

The "B"-shaped titanium nail allows the nutrient blood vessels to reach the cutting edge through the staple line, ensuring the blood supply of the sutured tissue area and facilitating the healing of the cutting edge. At the same time, titanium nails have good tissue compatibility and can avoid foreign body inflammatory reactions caused by manual suturing. In addition, the cutting and stapler is easy to operate, and can easily complete cutting and suturing in areas that are difficult to suture by hand. Therefore, the cutter and stapler using "B"-shaped titanium nails has become a sharp surgical tool in major surgeries such as general surgery, thoracic surgery, urology and obstetrics and gynecology.

Lung cancer is the main surgical disease in thoracic surgery, and cutting and staplers need to be used in many places during the operation. In thoracic surgery, the cutter and stapler are mainly used for the resection of tumors, the closure of bronchi and pulmonary vessels, the wedge resection of the lung, and the treatment of pulmonary fissure hypoplasia. After the stapler is fired, double rows of "B"-shaped titanium nails are staggered and sutured, and the bronchus, pulmonary blood vessels, and pulmonary fissure tissue are closed tightly and firmly. Compared with the traditional suturing method, the cutting stapler is safer, more reliable, and easy to operate, reducing the complications during and after the operation.

Local resection of the lung with a cutting and suturing device is a common surgical method for lung cancer. V-shaped wedge resection is generally used: cut and suture a linear cutting and suturing device at an appropriate position on one side of the lung lesion, and then replace the original device with a new one The top corners of the staple cartridge are relatively V-shaped to clamp the other side of the lesion, and the tissue on the other side is cut and sutured. In lung surgery, wedge resection of peripheral lung lesions with cutter and stapler is convenient, time-saving, and effective, and greatly reduces bleeding and air leakage in the lung section after traditional manual suturing.

However, since most tumors are spherical, most of the commonly used cutting and suturing devices are linear, so the formed cutting margins are also linear. In this way, on the one hand, too much tissue at both ends of the resection margin will be resected, which will be too deep, and the lung tissue will not close tightly and cause air leakage; Postoperative recurrence. In summary, the currently commonly used linear cutting stapler is not suitable for wedge resection of lung cancer, and it is necessary to make targeted improvements to the current linear cutting stapler according to clinical needs.

Contents of the invention

In order to avoid the defects of the existing linear cutting and stapler, the present invention provides a left-curved cutting and stapler.

According to one aspect of the present invention, there is provided a leftward curved cutting and stapler, wherein the cutting and stapler comprises: an upper jaw, a lower jaw and a closing handle;

The front end of the upper jaw is provided with an anvil;

The front end of the lower jaw is provided with a staple cartridge corresponding to the anvil;

The upper jaw is matched with the lower jaw, and an activation push button is connected to the rear end of the upper jaw and the lower jaw;

The closing handle is connected to the pin shaft of the lower jaw, and is used to control the closing or opening of the upper jaw and the lower jaw;

The slit-cut structure formed by the staple cartridge and the anvil is bent to the left along the long axis of the contact surface of the two, and the bending arc is 10°-40°.

According to a specific embodiment of the present invention, the staple cartridge includes: a staple cartridge shell, staples, a pusher plate, a pusher block and a cutting knife;

A nail groove, a nail pushing hole and a pushing knife groove are arranged in the nail cartridge shell;

The nail slots are arranged longitudinally on the staple cartridge;

The push knife groove is arranged parallel to the nail groove;

The staple is composed of a nail beam and nail legs connected to both ends of the nail beam, the front end of the nail leg is provided with a nail tip, and the staple is in a U-shaped structure;

The nail legs are arranged in the nail groove, and the nail beam is arranged above the nail pushing block;

The nail pushing plate is used to push the nail pushing block to push the staples out of the nail groove and/or push the cutting knife to move in the pushing knife groove.

According to another specific embodiment of the present invention, the nail grooves are arranged in 2-3 rows and arranged in the staple cartridge along the longitudinal direction.

According to yet another specific embodiment of the present invention, the push knife groove is arranged in the middle of the two rows of nail grooves.

According to yet another specific embodiment of the present invention, the cutting and stapler further includes a push plate and a push plate groove, and the push plate is placed in the push plate groove;

The push plate groove is longitudinally arranged in the staple cartridge;

The front end of the pushing plate is connected to the nail pushing plate through buckles, and the rear end of the pushing plate is connected to the activation push button.

According to yet another specific embodiment of the present invention, the groove of the pushing plate and the staple cartridge are arranged in the same arc shape.

Compared with the prior art, the suturing part of the leftward curved cutting stapler provided by the present invention is designed in an arc shape, which is convenient for surgical operation, can meet the actual needs of surgery to a greater extent, and reduce the occurrence of instrument-related complications; The relevant staple cartridges, nail pushing boards, cutting knives, pushing boards and pushing board grooves are all matched with the curved radian of the cutting part, which is beneficial to the suturing and cutting of tissues during the operation. In addition, because the left-curved cutting and stapler provided by the present invention has the above advantages, it has also been strongly supported by the Beijing Natural Science Foundation (No. 7142152).

Description of drawings

Other characteristics, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

Fig. 1 is a schematic structural view of a specific embodiment of a left-curved cutting stapler provided according to the present invention;

FIG. 2 is a schematic structural view of a specific embodiment of a staple cartridge of a left-curved cutting stapler provided according to the present invention;

Fig. 3 is a longitudinal sectional view along the arc of the staple cartridge shown in Fig. 2;

Fig. 4 shows the structural representation of a specific embodiment of the push nail plate and the push nail;

Figure 5 shows a longitudinal sectional view of a specific embodiment of the push plate;

Figure 6 shows a top view of a specific embodiment of the push plate;

Fig. 7 shows the structural representation of a specific embodiment of push nail plate and cutter;

Figure 8 (1) shows a schematic structural view of a specific embodiment of the staple cartridge;

Fig. 8 (2) shows the structure diagram of another specific embodiment of the staple cartridge;

Fig. 9 is a top view of a specific embodiment of the staple cartridge.

The same or similar reference numerals in the drawings represent the same or similar components.

The reference numbers are as shown in the table below:

100 upper clamp 200 lower jaw 300 close the handle 400 locking pin 500 fire button 600 Staple bin 1 Nail case 2 nail groove 3 push nail hole 4 Push knife groove 5 push nail block 6 staples 7 nail beam 8 push pin board 9 inclined plane 10 push nail groove 11 push nail seat 12 first push nail block 13 Second push nail block 14 base 15 cutting knife 16 Combination structure of nail pushing plate and cutting knife 17 push plate 18 hook

Detailed ways

The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and/or letters in different instances. This repetition is for simplicity and clarity and does not in itself indicate a relationship between the various embodiments and/or arrangements discussed. It should be noted that components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and processes are omitted herein to avoid unnecessarily limiting the present invention.

Referring to FIG. 1 to FIG. 9 , wherein FIG. 1 is a schematic structural diagram of a specific embodiment of a left-curved cutter and stapler according to the present invention.

The cutting and stapler includes: an upper jaw 100, a lower jaw 200 and a closing handle 300; the front end of the upper jaw 100 is provided with a nail anvil; the front end of the lower jaw 200 is provided with a The corresponding staple cartridge 600. The upper jaw 100 is matched with the lower jaw 200 , and an activation push button 500 is connected to the rear ends of the upper jaw 100 and the lower jaw 200 . The firing push button 500 is used to push the staples out of the staple cartridge 600, and is also used to push the cutting knife to cut off the diseased tissue.

The closing handle 300 is connected to the pin shaft of the lower jaw 200 for controlling the closing or opening of the upper jaw 100 and the lower jaw 200 . When the closing handle 300 is under pressure, it can rotate around the pin shaft. At this time, the locking pin 400 located in the middle of the upper jaw 100 can be stuck in the opening at the front end of the closing handle 300 . In order to tightly close the upper jaw 100 and the lower jaw 200 , the opening at the front end of the closing handle 300 is arranged obliquely, so that the two can be firmly closed by the pulling force of the locking pin 400 .

The staple cartridge 600 and the corresponding staple anvil are arranged at the front ends of the lower jaw 200 and the upper jaw 100 . Since the sizes of different surgical tissues are different, there are many options for the length of the staple cartridge 600, as shown in Fig. 8(1) and Fig. 8(2). As mentioned above, the cutting and stapler provided by the present invention can replace the staple cartridge assembly according to the needs of the operation without replacing the entire stapler, which can effectively save costs.

The stitching structure formed by the staple cartridge 600 and the staple anvil bends to the left along the long axis of the contact surface between the two. Preferably, the arc to the left is 10°-40°. Since the cutter and stapler are often used to remove lesions such as lung tumors, the curved radian needs to match the radians of various common tumors, so as to preserve healthy tissue as much as possible while completely resecting the lesion. Therefore, the above-mentioned radian range is selected as should. More preferably, the radian is 15°-35°, for example: 15°, 25° or 35°.

The cutting part of the cutting and stapler provided by the present invention adopts an arc design bent to the left, which is more suitable for spherical structural lesions compared with the traditional linear cutting and stapler. For example, when resecting a lung lesion, it is better to use two cutters and staplers together, which can better ensure that the incision margin is arc-shaped, and the distance between each part of the incision margin and the lesion is basically the same. Diseased tissue while preserving as much healthy tissue as possible. In addition, the left-curved cutting and stapler is more advantageous than the straight cutting and stapler for cutting gastrointestinal tissue, which can effectively avoid the sharp angle formed after cutting, and is more suitable for the normal structure of the gastrointestinal tract , reducing the bacterial residue in the blind end and the included angle, which is conducive to the healing of the cut edge.

As shown in FIGS. 2-7 , the staple cartridge 600 includes: a staple cartridge case 1 , staples 6 , a pusher plate 8 , a pusher block 5 and a cutting knife 15 . The nail cartridge case 1 is provided with a nail slot 2 , a nail pushing hole 3 and a knife pushing slot 4 . The nail slots 2 are arranged longitudinally on the staple cartridge; the push knife slots 4 are arranged parallel to the nail slots 2 . The nail pushing block 5 is made up of a nail pushing groove 10 and a nail pushing seat 11, and the first nail pushing block 12 and the second nail pushing block 13 are connected into an integral nail pushing block by a base 14 sandwiched between the two nail pushing blocks.

The staple 6 is composed of a nail beam 7 and nail legs connected to the two ends of the nail beam 7. The front end of the nail leg is provided with a nail point, and the staple 6 is in a U-shaped structure; the nail leg is arranged on In the nail groove 2 , the nail beam 7 is arranged above the nail pushing block 5 .

The nail pushing plate 8 is used to push the nail pushing block 5 to push the staples 6 out of the nail groove 2 and/or push the cutting knife 15 to move in the pushing knife groove 4 . The front end of the nail pushing plate 8 is provided with an inclined surface 9, and when the nail pushing block 5 is pushed, the nail pushing plate 8 relies on the inclined surface 9 to push. the

In the middle of the upper jaw 100 and the lower jaw 200, a slidable nail pushing plate and cutting knife combination structure 16 is arranged. The radian of the combined structure 16 matches the radian of the staple cartridge 600 , and can move along the pusher plate groove and/or the pusher knife groove 4 inside the staple cartridge 600 to drive the staples 6 and/or push the cutting knife 15 .

The combined structure 16 of the nail pushing plate and the cutting knife is connected with the pushing plate 17 backwards. Referring to Fig. 5 and Fig. 6, the push plate 17 has a sheet-like structure, is made of elastic material, and can be slightly bent to the left under the action of an external force. The rear end of the push plate 17 is connected with the sliding block at the rear end of the lower jaw 200 . The pushing plate 17 moves along the movable groove, and the movable groove is placed in the lower jaw 200 and extends forward into the staple cartridge 600 . The movable groove placed at the rear of the lower jaw 200 is linear, while its part inside the staple cartridge 600 is arc-shaped, and the radian is the same as that of the staple cartridge 600 . When the sliding block is pushed forward, the nail pushing plate 8 and the cutting knife 15 are pushed forward by the pushing plate 17, and can move forward along the movable groove inside the curved nail cartridge 600, and can pass through the pushing plate when the sliding block is pulled back. 17 Pull back the nail pusher plate 8 and the cutting knife 15 along the arc movable groove.

The nail pushing plate 8 and the cutting knife 15 are installed vertically, and the movable groove inside the corresponding staple cartridge 600 is also vertical. The nail pushing plate 8 can push up the nail pushing block 5 in the nail cartridge 600 by sliding forward. Cutting knife 15 blades stand upright beyond the upper edge of the tissue contact surface and deeply nail the chopping board, and can cut off the tissue from the middle by sliding forward. The rear end of nail pushing plate and cutter combination structure 16 has hook 18, can link to each other with pushing plate 17.

In addition, the cutting and stapler of the present invention can install the staple pushing plate 8 and the cutting knife 15 in the staple cartridge 600, and can also install the staple pushing plate 8 and the cutting knife 15 in the cutting and stapler.

The arc-shaped cutting edge formed by the cutting and suturing device provided by the present invention makes each part of the cutting edge substantially equidistant from the focus, so that the tumor can be removed as much as possible without remaining diseased tissue, and healthy tissue can be preserved as much as possible; used together It does not form a sharp cutting angle, and forms an arc-shaped cutting edge, which is more suitable for the natural structure and is conducive to lung inflation and tissue healing; it does not need to extend too much into the deep normal tissue, and the thickness of the nail edge is uniform, avoiding the failure of the nail. After two cutting and suturing devices are used together for wedge resection, the included angle is large, and the nails in the two directions are close to parallel and intersect, with little mutual influence, which is convenient for nailing; the two arc-shaped included angles are easy to fit, eliminating the need for included angles Risk of air leakage and bleeding.

Although the example embodiments and their advantages have been described in detail, it should be understood that various changes, substitutions and alterations can be made to these embodiments without departing from the spirit of the invention and the scope of protection as defined by the appended claims. For other examples, those of ordinary skill in the art will readily understand that the order of process steps may be varied while remaining within the scope of the present invention.

In addition, the scope of application of the present invention is not limited to the process, mechanism, manufacture, material composition, means, methods and steps of the specific embodiments described in the specification. From the disclosure of the present invention, those of ordinary skill in the art will easily understand that for the processes, mechanisms, manufacturing, material compositions, means, methods or steps that currently exist or will be developed in the future, they are implemented in accordance with the present invention Corresponding embodiments described which function substantially the same or achieve substantially the same results may be applied in accordance with the present invention. Therefore, the appended claims of the present invention are intended to include these processes, mechanisms, manufacture, material compositions, means, methods or steps within their protection scope.

Claims (6)

1. A left-curved type cutting stapler, wherein the cutting stapler comprises: upper jaws, lower jaws and closing handles; The front end of the upper jaw is provided with an anvil; The front end of the lower jaw is provided with a staple cartridge corresponding to the anvil; The upper jaw is matched with the lower jaw, and an activation push button is connected to the rear end of the upper jaw and the lower jaw; The closing handle is connected to the pin shaft of the lower jaw, and is used to control the closing or opening of the upper jaw and the lower jaw; The slit-cut structure formed by the staple cartridge and the anvil is bent to the left along the long axis of the contact surface of the two, and the bending arc is 10°-40°. 2. The cutting and stapler according to claim 1, wherein the staple cartridge comprises: a staple cartridge shell, staples, a nail pushing plate, a nail pushing block and a cutting knife; A nail groove, a nail pushing hole and a pushing knife groove are arranged in the nail cartridge shell; The nail slots are arranged longitudinally on the staple cartridge; The push knife groove is arranged parallel to the nail groove; The staple is composed of a nail beam and nail legs connected to both ends of the nail beam, the front end of the nail leg is provided with a nail tip, and the staple is in a U-shaped structure; The nail legs are arranged in the nail groove, and the nail beam is arranged above the nail pushing block; The nail pushing plate is used to push the nail pushing block to push the staples out of the nail groove and/or push the cutting knife to move in the pushing knife groove. 3 . The cutting and stapler according to claim 1 , wherein the nail grooves are arranged in 2-3 rows and longitudinally arranged on the staple cartridge. 4 . 4. The cutter and stapler according to claim 3, wherein the push knife groove is arranged in the middle of the two rows of nail grooves. 5. The cutting and stapler according to claim 1, wherein the cutting and stapler also comprises a pusher plate and a pusher plate groove, and the pusher plate is placed in the pusher plate groove; The push plate groove is longitudinally arranged in the staple cartridge; The front end of the pushing plate is connected to the nail pushing plate through buckles, and the rear end of the pushing plate is connected to the activation push button. 6. The cutter and stapler according to claim 1, wherein the groove of the pushing plate and the staple cartridge are arranged in the same arc shape.