Electric anastomat for testing and testing method
By designing an electric stapler that includes a pressure sensor and an adjustable staple forming curvature, the problems of improper pressure and staple length during the anastomosis process under different tissue types and thicknesses are solved, and the surgical success rate and tissue anastomosis effect are optimized.
Patent Information
- Application Number
- CN202510673844.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-23
- Publication Date
- 2025-09-05
AI Technical Summary
During the anastomosis process of existing electric staplers under different tissue types and thicknesses, improper pressure setting and staple length may cause tissue damage and complications, affecting the success rate of the operation.
An electric stapler was designed, which included a mounting frame, anvil guide block, anvil device, base, staple magazine and other components. The tissue thickness and compression force were measured by a pressure sensor, the forming curvature of the staples was adjusted, and the corresponding relationship between the variables and the anastomosis effect was established to provide a reference for the optimal anastomosis parameters.
The success rate of the operation is improved by measuring and adjusting the anastomosis pressure, tissue thickness and staple length to optimize the anastomosis effect and reduce tissue damage and complications.
Smart Images
Figure CN120585397A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of medical devices, and in particular to an electric anastomosis device for testing. Background Art
[0002] In modern surgery, electric staplers, as a key surgical instrument, are widely used in gastrointestinal, pulmonary, cardiac and other types of open or minimally invasive surgeries. The main function of the stapler is to precisely sew together the remaining healthy tissue after removing the diseased tissue to promote healing and maintain normal organ function. However, changes in tissue type, thickness and hardness greatly affect the quality and effectiveness of the anastomosis process. Improper pressure settings and staple lengths may cause tissue damage, anastomosis line exposure or other complications, thereby affecting the success rate of the operation and patient recovery. Summary of the Invention
[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides an electric stapler for testing, which can test the optimal anastomotic pressure and staple length, thereby improving the success rate of surgery.
[0004] According to an embodiment of the first aspect of the present invention, an electric stapler for testing comprises: a mounting frame, a staple guide block, a staple device, a base, and a staple magazine. The mounting frame is connected to a knife rod, and a drive plate is inserted into the knife rod; the staple guide block is slidably mounted on the mounting frame; the staple device is hinged to the upper end of the staple guide block, and an extension plate is horizontally arranged on the staple guide block, and the extension plate is used to limit the rotation angle of the staple device. The drive plate is connected to the staple device to control the rotation angle of the staple device, and the drive plate can also drive the staple guide block to slide in the up and down directions; the base is fixedly mounted on the mounting frame, the base is horizontally arranged, and the base is located below the staple device. A pressure sensor is arranged on the side of the staple device close to the base; the staple magazine is detachably connected to the base, and staples are arranged in the staple magazine, and the staples can move toward the staple device. The staple device abuts against the staples to form the staples, and the staple device can change the curvature of the staples.
[0005] According to an embodiment of the present invention, an electric stapler for testing has at least the following beneficial effects: the staple cartridge is detachably connected to the base for easy replacement, the tissue thickness and the compressive force applied to the tissue can be measured by moving the drive plate and the pressure sensor, and the stapler can change the curvature of the staple formation. During testing, the tissue to be tested is stapled with different clamping forces, tissue thicknesses, staple lengths, and staple curvatures to achieve different anastomosis effects, and a corresponding relationship between various variables and anastomosis effects is established. This provides the doctor with the appropriate anastomosis pressure and staple length for tissue of corresponding thickness for reference, thereby improving the success rate of the surgery.
[0006] According to some embodiments of the present invention, a groove for the driving plate to pass through is provided on the base, and a redirecting column is provided above the groove. The redirecting column is used to guide the driving plate so that the driving plate can pull the nail guide block and the nail device to move.
[0007] According to some embodiments of the present invention, a first slide bar and a second slide bar are vertically arranged on the mounting frame, and the first slide bar and the second slide bar pass through the nail guide block, and the first slide bar and the second slide bar are used to guide the nail guide block.
[0008] According to some embodiments of the present invention, a nail pushing rod is inserted into the knife rod, and the nail pushing rod abuts against the nail pushing block in the nail magazine to drive the nail pushing block to move forward. When the nail pushing block moves forward, it can push the anastomotic staples to move toward the nail anvil device.
[0009] According to some embodiments of the present invention, the base is connected to the mounting bracket by bolts.
[0010] According to some embodiments of the present invention, the driving plate is made of spring steel.
[0011] According to some embodiments of the present invention, the stapler device includes a stapler main seat and a stapler sub-seater, the stapler sub-seater is connected to an adjustment device, the stapler main seat is slidably connected to the mounting frame, a forming groove is provided on the side of the stapler main seat close to the staple magazine corresponding to the staple, and the two ends of the forming groove respectively have a first guide slope and a second guide slope, the first guide slope is used to guide the staple moving downward, so that the staple is bent and moved along the extension direction of the forming groove to the second guide slope, and the second guide slope is used to guide the staple so that the staple is bent upward. An adjustment hole is provided on the bottom wall of the forming groove, an adjustment rod is passed through the adjustment hole, the staple sub-seated is connected to the adjustment rod, the adjustment device is used to drive the adjustment rod to switch between the first position and the second position, and a third guide slope is provided on the top of the adjustment rod facing the first guide slope. When the adjustment rod is in the first position, the third guide slope extends into the forming groove. The third guide slope can guide the anastomosis staple moving along the extension direction of the forming groove, so that the anastomosis staple bends upward. When the adjustment rod is in the second position, the third guide slope retracts into the adjustment hole.
[0012] According to some embodiments of the present invention, the adjustment device includes an elastic member and an adjusting screw, the adjusting screw passes through the anvil sub-seat and is threadedly connected to the anvil main seat, the elastic member is arranged between the anvil main seat and the anvil sub-seat, the adjusting screw is used to drive the anvil main seat and the anvil sub-seat closer to each other, and the elastic member is used to drive the anvil main seat and the anvil sub-seat away from each other.
[0013] According to some embodiments of the present invention, the forming grooves, the anastomotic staples, and the adjusting rods are arranged in multiple rows at intervals.
[0014] The present invention also provides a testing method, wherein the testing method uses the above-mentioned electric stapler for testing, and comprises the following steps: Step 1: Select the staple cartridge with a staple length of L and install it on the base; Step 2: Control the driving plate to pull the anvil device, causing the anvil device to rotate until it abuts against the extension plate, and continue to pull the driving plate to drive the anvil guide block downward, so that the anvil device and the staple cartridge clamp the tissue to be anastomosed with a thickness of A. When the pressure sensor value reaches P, stop pulling the driving plate; Step 3: rotating the adjusting screw to adjust the curvature U of the staple; Step 4: the staple pusher moves forward, driving the staple pusher block to move forward, and the staple pusher block pushes the staples out of the staple cartridge and bends them into shape; Step 5: Manually evaluate and record the anastomosis effect; Step 6: Change any one or more parameters among L, A, P and U, repeat steps 1 to 5, and establish a model of the relationship between L, A, P, U and the matching effect.
[0015] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which: Figure 1 A schematic diagram of an installation structure according to an embodiment of the present invention; Figure 2 This is a schematic diagram of a base and anvil device in a closed state according to an embodiment of the present invention; Figure 3 This is an exploded schematic diagram of a base and a nail magazine according to an embodiment of the present invention; Figure 4 This is an exploded schematic diagram of an anvil device according to an embodiment of the present invention; Figure 5 for Figure 4 Enlarged view of point A in the middle; Figure 6 A schematic diagram of an adjusting device according to an embodiment of the present invention; Figure 7 A cross-sectional schematic diagram of an adjustment lever in an embodiment of the present invention when located in a first position; Figure 8 A schematic diagram of staple formation when the adjustment rod is located at a first position according to an embodiment of the present invention; Figure 9 A schematic diagram of staple formation when the adjustment rod is located at the second position according to an embodiment of the present invention; Figure 10 This is a schematic diagram of the base and the nail support device when they are opened according to an embodiment of the present invention.
[0017] Figure Number: Mounting frame 100, first slide bar 110, second slide bar 120; Tool bar 200; Drive plate 300; Anvil guide block 400, extension plate 410; Anvil device 500, anvil main seat 510, forming groove 511, first guide slope 512, second guide slope 513, adjustment hole 514, adjustment rod 515, third guide slope 516, anvil sub-seat 520; Base 600, groove 610, redirecting column 620; Staple cartridge 700, anastomotic staples 710, and a staple pusher block 720; Adjusting device 800 , elastic member 810 , and adjusting screw 820 . DETAILED DESCRIPTION
[0018] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.
[0019] In the description of the present invention, it should be understood that descriptions involving orientation, such as the orientation or positional relationship indicated by up, down, etc., are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0020] In the description of the present invention, "a plurality" refers to more than two. The use of "first" or "second" is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of the indicated technical features, or implicitly indicating the order of the indicated technical features.
[0021] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.
[0022] Reference Figures 1 to 10As shown, an electric stapler for testing according to one embodiment of the present invention includes: a mounting frame 100, a nail anvil guide block 400, a nail anvil device 500, a base 600, and a nail magazine 700. The mounting frame 100 is connected to a knife rod 200, which is a hollow metal tube. A drive plate 300 is passed through the knife rod 200. An operating handle is provided on the side of the knife rod 200 away from the mounting frame 100. The operating handle is provided with an electric drive device capable of driving the drive plate 300 to move forward and backward. The operating handle, the electric drive device and the knife rod 200 are prior arts in the field of electric staplers and will not be described in detail. The nail anvil guide block 400 is slidably mounted on the mounting frame 100, and the nail anvil guide block 400 can move in parallel in the up and down directions. The anvil 500 is hinged to the upper end of the anvil guide block 400; an extension plate 410 is horizontally disposed on the anvil guide block 400. When the anvil 500 is rotated to a horizontal position, it can abut against the extension plate 410. The extension plate 410 is used to limit the rotation angle of the anvil 500. The end of the drive plate 300 away from the operating handle is bolted to the anvil 500. The drive plate 300 is used to control the rotation angle of the anvil 500 and can also drive the anvil guide block 400 to slide vertically. The base 600 is fixedly mounted on the mounting frame 100. The base 600 is disposed horizontally and is located below the anvil 500. The anvil 500 and the base 600 both extend in the front-to-back direction. The anvil 500 can rotate and move vertically under the guidance of the anvil guide block 400. Driven by the drive plate 300, the anvil 500 can rotate and move vertically parallel to the nail magazine 700 until it abuts against the nail magazine 700. When the anvil 500 abuts the extension plate 410, it is parallel to the staple cartridge 700. By continuing to pull the anvil 500 with the drive plate 300, the anvil 500 can be moved downward and parallel to the staple cartridge 700. A pressure sensor is provided on the side of the anvil 500 near the base 600. The staple cartridge 700 is detachably connected to the base 600, and the staple cartridge 700 and the base 600 are snap-fitted together. Staples 710 are provided within the staple cartridge 700 and can move toward the anvil 500. When the anvil 500 and the base 600 are parallel and approaching each other, the staple cartridge 700 and the anvil 500 clamp the tissue to be stapled. The pressure sensor can measure the compressive force of the anvil 500 on the tissue. The travel of the drive plate 300 and the pressure sensor can be used to measure the tissue thickness. The travel of the drive plate 300 is proportional to the gap between the staple cartridge 700 and the anvil 500. Multiple pressure sensors can be installed to average the pressure values for improved measurement accuracy. The installation and specific structure of the pressure sensors are prior art and will not be described in detail. The anvil 500 abuts against the staples 710 to guide them and shape them. The anvil 500 can alter the curvature of the formed staples 710.During the test, the tissue to be tested is anastomosed with different clamping forces, tissue thicknesses, staple 710 lengths, and curvatures of the staple 710 to obtain different anastomosis effects and establish corresponding relationships between various variables and anastomosis effects.
[0023] Reference Figure 3 As shown, it is understood that the upper end of the base 600 is provided with a groove 610 for the drive plate 300 to pass through. The groove 610 extends in the front-to-back direction and is aligned with the knife bar 200. A redirection column 620 is welded above the groove 610. The redirection column 620 is a cylindrical body extending left and right. The redirection column 620 is used to guide the drive plate 300, redirecting the horizontal drive plate 300 to connect to the anvil device 500 diagonally upward, so that the drive plate 300 can pull the anvil guide block 400 and the anvil device 500 to move. The distance between the redirection column 620 and the nail magazine 700 does not exceed 1 cm to optimize the force applied to the drive plate 300, making it as easy as possible for the drive plate 300 to pull and push the anvil device 500.
[0024] Reference Figure 2 and Figure 3 As shown, it can be understood that the first slide bar 110 and the second slide bar 120 are vertically arranged on the mounting frame 100, and the first slide bar 110 and the second slide bar 120 pass through the nail guide block 400. The first slide bar 110 and the second slide bar 120 are spaced apart in the front-to-back direction. The mounting frame 100 is fixedly connected to the first slide bar 110 and the second slide bar 120. The first slide bar 110 and the second slide bar 120 are both smooth round rods. The nail guide block 400 is mounted on the first slide bar 110 and the second slide bar 120 via a linear bearing, and the nail guide block 400 moves along the direction in which the slide bars extend. The rigidity of the mounting frame 100, the first slide bar 110 and the second slide bar 120 has a significant impact on the measurement results. The mounting frame 100, the first slide bar 110 and the second slide bar 120 have a relatively simple structure and are easy to process. Therefore, the mounting frame 100, the first slide bar 110 and the second slide bar 120 should be manufactured using a tungsten steel alloy with a high hardness to ensure reliable measurement accuracy. Since the nail magazine 700 and the nail anvil 500 may no longer remain parallel and cause movement jam when clamped, the first slide bar 110 and the second slide bar 120 are added to make the nail anvil guide block 400 more stable during movement, ensuring that the nail magazine 700 and the nail anvil 500 remain parallel.
[0025] Reference Figure 2 、 Figure 3As shown, it can be understood that a nail pushing rod is provided in the knife rod 200, and the nail pushing rod is connected to the electric drive device provided in the operating handle, and the electric drive device can also drive the nail pushing rod to move along the extension direction of the base 600. The nail pushing rod can drive the nail pushing block 720 to move forward and backward, and when the nail pushing block 720 moves forward, it can push the staples 710 to move toward the staple support device 500, reducing the weight of the moving parts and facilitating the miniaturization of the equipment. The nail pushing block 720 is a component in the existing nail magazine 700, and its specific structure and installation method are existing technologies, so they will not be described in detail. The nail magazine 700 has not changed much compared to the nail magazine 700 in the prior art. A slight improvement to the existing nail magazine 700 can be used for testing, and the cost of consumables for testing is low.
[0026] Reference Figure 3 As shown, it is understood that the base 600 is bolted to the mounting bracket 100. Bolting has the advantage of quick installation. No welding or complicated processes are required, and assembly can be completed using standard tools, saving time and labor costs.
[0027] Reference Figure 2 and Figure 3 As shown, it is understandable that the drive plate 300 is made of spring steel. The drive plate 300 can use the parts of the electric stapler in the prior art that push the blade forward to reduce costs.
[0028] Reference Figures 3 to 9As shown, it can be understood that the nail device 500 includes a nail main seat 510 and a nail sub-seat 520, and the nail main seat 510 and the nail sub-seat 520 both extend in the front-to-back direction. The nail sub-seat 520 is connected to the adjusting device 800, the nail main seat 510 is slidably connected to the mounting frame 100, and the nail sub-seat 520 is connected to the nail main seat 510 through the adjusting device 800. The nail magazine 700 is located below the nail main seat 510, and a forming groove 511 is provided on the nail main seat 510 close to the nail magazine 700 on the side corresponding to the staples 710. The staples 71 After exiting the staple cartridge 700, the staples 710 move downward into the forming groove 511. The forming groove 511 has a first guide slope 512 and a second guide slope 513 at either end. The first guide slope 512 guides the downwardly moving staples 710, causing them to bend and move along the extending direction of the forming groove 511 to the second guide slope 513. The second guide slope 513 guides the staples 710 upward, forming the staples 710 into a B-shape. The bottom wall of the forming groove 511 has an adjustment hole 514 extending vertically and located between the first guide slope 512 and the second guide slope 513. An adjustment rod 515 extends through the adjustment hole 514, and the anvil sub-base 520 is connected to the adjustment rod 515. Multiple adjustment rods 515 are provided corresponding to the plurality of forming grooves 511, and are therefore connected via the anvil sub-base 520 to achieve synchronous movement of the multiple adjustment rods 515. The adjustment device 800 is used to drive the adjustment rod 515 to switch between a first position and a second position. A third guide slope 516 is provided on the top of the adjustment rod 515, facing the first guide slope 512. When the adjustment rod 515 is in the first position, the third guide slope 516 extends into the forming groove 511. The third guide slope 516 can guide the staples 710 moving along the extension direction of the forming groove 511, causing the staples 710 to bend upward. When the adjustment rod 515 is in the second position, the third guide slope 516 retracts into the adjustment hole 514. Therefore, when the adjustment rod 515 is in the first position, the first guide bevel 512 and the second guide bevel 513 cooperate to form the staples 710. When the adjustment rod 515 is in the second position, the first guide bevel 512 and the third guide bevel 516 cooperate to form the staples 710. The distance between the first guide bevel 512 and the second guide bevel 513 is greater than the distance between the first guide bevel 512 and the third guide bevel 516, thereby changing the curvature of the staples 710. In addition, the curvature of the third guide bevel 516 is greater, thereby further increasing the curvature of the staples 710.When anastomosing tissues of varying thicknesses, the spacing between the staple cartridge 700 and the main anvil 510 varies. When anastomosing thinner tissues, the curvature of the staple 710 can be increased, allowing the ends of the staples 710 to spiral around and form a spiral shape, thereby improving the suturing effect on the tissue. When anastomosing thicker tissues, the curvature of the staple 710 can be reduced, allowing the staples 710 to be formed into a B-shape, thereby improving the suturing effect on the tissue. It is foreseeable that adjacent forming grooves 511 are symmetrically arranged to guide the ends of the same staple 710.
[0029] Reference Figure 6 As shown, it can be understood that the adjustment device 800 includes an elastic member 810 and an adjustment screw 820. The adjustment screw 820 passes through the anvil sub-base 520 and is threadedly connected to the anvil main base 510. The elastic member 810 is a rubber gasket and is disposed between the anvil main base 510 and the anvil sub-base 520. The adjustment screw 820 is used to drive the anvil main base 510 and the anvil sub-base 520 toward each other, while the elastic member 810 is used to drive the anvil main base 510 and the anvil sub-base 520 away from each other. When the adjustment screw 820 is tightened, the anvil main base 510 and the anvil sub-base 520 move toward each other, compressing the elastic member 810. When the adjustment screw 820 is loosened, the elastic member 810 returns to its original position, pushing the anvil main base 510 and the anvil sub-base 520 away from each other. A plurality of adjustment screws 820 and elastic members 810 are symmetrically arranged to enable the anvil main base 510 and the anvil sub-base 520 to move toward and away from each other in parallel.
[0030] Reference Figures 3 to 9 As shown, it can be understood that the forming grooves 511, staples 710, and adjustment rods 515 are arranged in six rows. A blade is connected to the staple pusher block 720, which partially extends from the lower end of the staple cartridge 700. The blade cuts the tissue clamped between the staple cartridge 700 and the anvil 510 as it moves forward in sync with the pusher block. The anvil 510 has a cutting groove at its upper end for the blade to insert and guide. The six rows of forming grooves 511, staples 710, and adjustment rods 515 are evenly distributed on either side of the cutting groove. The existing staple cartridge 700 has a curved surface on one side that clamps the tissue. During compression, the tissue near the center becomes thinner than the tissue on the sides. Therefore, it is foreseeable that each row of forming grooves 511 will have a different curvature for guiding the staples 710. The forming grooves 511 near the cutting grooves have a greater curvature for guiding the staples 710 to accommodate the thinner tissue being squeezed in the center.
[0031] The present invention also provides a testing method, which uses the above-mentioned electric stapler for testing to perform testing, and specifically includes the following steps: Step 1: Select a staple cartridge 700 with a staple length of L and snap-fit the staple cartridge 700 to the base 600. In step 2, the electric drive device controls the drive plate 300 to pull the anvil 500, causing the anvil 500 to rotate until it abuts against the extension plate 410. The drive plate 300 is then continuously pulled, driving the anvil guide block 400 to move downward, causing the anvil 500 and the staple cartridge 700 to clamp the tissue to be anastomosed, which has a thickness of A. When the pressure sensor value reaches P, the drive plate 300 is stopped from being pulled. Step 3: Rotate the adjusting screw 820 to adjust the curvature U of the staple 710; Step 4: The electric drive device controls the nail pushing rod to move forward, driving the nail pushing block 720 to move forward. The nail pushing block 720 pushes the staples 710 out of the staple cartridge 700 and bends them into shape. Step 5: The electric drive device controls the nail push rod to move backward and controls the drive plate 300 to move forward, driving the nail anvil 500 and the nail magazine 700 to separate. The anastomosis effect is manually evaluated and recorded. Step 6: Change any one or more parameters among L, A, P and U, repeat steps 1 to 5, and establish a model of the relationship between L, A, P, U and the matching effect.
[0032] Through extensive experimental testing, a database of various parameters and anastomosis results has been established, making it easy to determine the optimal combination of these parameters. This provides a theoretical reference for surgeons to select the appropriate staple 710 length L, staple 710 shape, clamping thickness A, and clamping pressure P during actual surgery. It is foreseeable that multiple databases will be needed for different tissue types.
[0033] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the scope of the present invention.
Claims
1. An electric stapler for testing, characterized in that: include: A mounting frame (100), the mounting frame (100) being connected to a knife rod (200), and a driving plate (300) being inserted into the knife rod (200); A nail guide block (400) is slidably mounted on the mounting frame (100); The anvil device (500) is hinged to the upper end of the anvil guide block (400), and an extension plate (410) is horizontally provided on the anvil guide block (400). The extension plate (410) is used to limit the rotation angle of the anvil device (500). The drive plate (300) is connected to the anvil device (500) to control the rotation angle of the anvil device (500). The drive plate (300) can also drive the anvil guide block (400) to slide in the up and down directions. a base (600) fixedly mounted on the mounting frame (100), the base (600) being arranged horizontally, the base (600) being located below the anvil device (500), and a pressure sensor being arranged on a side of the anvil device (500) close to the base (600); A staple cartridge (700) is detachably connected to the base (600), wherein staples (710) are provided in the staple cartridge (700), wherein the staples (710) can move toward the staple anvil device (500), wherein the staple anvil device (500) abuts against the staples (710) to form the staples (710), and wherein the staple anvil device (500) can change the curvature of the formed staples (710).
2. The electric stapler for testing according to claim 1, characterized in that: The base (600) is provided with a groove (610) for the driving plate (300) to pass through, and a redirecting column (620) is provided above the groove (610). The redirecting column (620) is used to guide the driving plate (300) so that the driving plate (300) can pull the nail guide block (400) and the nail device (500) to move.
3. The electric stapler for testing according to claim 1, characterized in that: A first slide bar (110) and a second slide bar (120) are vertically arranged on the mounting frame (100), and the first slide bar (110) and the second slide bar (120) pass through the anvil guide block (400). The first slide bar (110) and the second slide bar (120) are used to guide the anvil guide block (400).
4. The electric stapler for testing according to claim 1, characterized in that: A nail pushing rod is provided in the knife rod (200), and the nail pushing rod abuts against the nail pushing block (720) in the nail magazine (700) to drive the nail pushing block (720) to move forward. When the nail pushing block (720) moves forward, it can push the anastomotic staple (710) to move toward the nail anvil device (500).
5. The electric stapler for testing according to claim 1, characterized in that: The base (600) is bolted to the mounting frame (100).
6. The electric stapler for testing according to claim 1, characterized in that: The driving plate (300) is made of spring steel.
7. The electric stapler for testing according to claim 1, characterized in that: The anvil device (500) includes an anvil main seat (510) and an anvil sub-seat (520), the anvil sub-seat (520) is connected to an adjustment device (800), the anvil main seat (510) is slidably connected to the mounting frame (100), and a forming groove (511) is provided on the side of the anvil main seat (510) close to the nail magazine (700) corresponding to the staple (710), and the two ends of the forming groove (511) respectively have a first guiding slope (512) and a second guiding slope (513), the first guiding slope (512) is used to guide the staple (710) moving downward, so that the staple (710) is bent along the extension direction of the forming groove (511) and moves to the second guiding slope (513), the second guiding slope (513) is used to guide the staple (710) so that the staple (710) is bent upward, and the forming groove (511) is provided with a first guiding slope (512) and a second guiding slope (513). An adjusting hole (514) is provided on the bottom wall of the groove (511), and an adjusting rod (515) is passed through the adjusting hole (514). The staple support seat (520) is connected to the adjusting rod (515), and the adjusting device (800) is used to drive the adjusting rod (515) to switch between a first position and a second position. A third guiding slope (516) facing the first guiding slope (512) is provided on the top of the adjusting rod (515). When the adjusting rod (515) is in the first position, the third guiding slope (516) extends into the forming groove (511). The third guiding slope (516) can guide the staple (710) moving along the extension direction of the forming groove (511) to make the staple (710) bend upward. When the adjusting rod (515) is in the second position, the third guiding slope (516) retracts into the adjusting hole (514).
8. The electric stapler for testing according to claim 7, characterized in that: The adjusting device (800) includes an elastic member (810) and an adjusting screw (820), wherein the adjusting screw (820) passes through the anvil sub-seat (520) and is threadedly connected to the anvil main seat (510), and the elastic member (810) is arranged between the anvil main seat (510) and the anvil sub-seat (520), and the adjusting screw (820) is used to drive the anvil main seat (510) and the anvil sub-seat (520) to approach each other, and the elastic member (810) is used to drive the anvil main seat (510) and the anvil sub-seat (520) to move away from each other.
9. The electric stapler for testing according to claim 7, characterized in that: The forming grooves (511), the anastomotic staples (710), and the adjusting rods (515) are arranged in multiple rows at intervals.
10. A testing method, characterized in that: Testing using the electric stapler for testing according to claim 8 comprises the following steps: Step 1: Select the staple cartridge (700) with a staple length L and install it on the base (600); Step 2: Control the driving plate (300) to pull the nail anvil (500), so that the nail anvil (500) rotates to abut against the extension plate (410), and continue to pull the driving plate (300) to drive the nail anvil guide block (400) to move downward, so that the nail anvil (500) and the nail magazine (700) clamp the tissue to be anastomosed with a thickness of A. When the pressure sensor value reaches P, stop pulling the driving plate (300); Step three, rotating the adjusting screw (820) to adjust the curvature U of the staple (710); Step 4: the nail pushing rod moves forward, driving the nail pushing block (720) to move forward, and the nail pushing block (720) pushes the anastomotic staples (710) out of the staple cartridge (700) and bends them into shape; Step 5: Manually evaluate and record the anastomosis effect; Step 6: Change any one or more parameters among L, A, P and U, repeat steps 1 to 5, and establish a model of the relationship between L, A, P, U and the matching effect.