Electric stapler jaw closure detection device and method

Abstract

The present invention relates to the technical field of detection equipment, and in particular to a device and method for detecting the closure of an electric stapler jaw, comprising a clamping unit, a support ring, a long plate and a laser rangefinder, wherein the clamping unit is used to clamp and fix the stapler jaw, the support ring is installed on the clamping unit, and the stapler jaw is coaxial with the support ring; by measuring the distance information of a movable arm on the stapler jaw, combined with the specified information of the movable arm on the stapler jaw, it is determined whether the movable arm on the stapler jaw has abnormal information such as bending, too large an angle, too small an angle, and tilt of the movable arm, thereby determining whether the movable arm on the stapler jaw can be completely closed when rotating, reducing errors caused by human factors and improving the detection accuracy; through this detection method, its closure detection work can be realized without operating the stapler jaw to close, thereby simplifying the detection method.

Description

Technical Field

[0001] The present invention relates to the technical field of detection equipment, and in particular to a device and method for detecting the closure of jaws of an electric stapler. Background Art

[0002] With the development of minimally invasive surgical technology, electric staplers are being used more and more widely in clinical surgery. With their high efficiency and precision, electric staplers have greatly improved the success rate of surgery and reduced patients' postoperative recovery time and the incidence of complications.

[0003] The electric stapler is mainly composed of a handle, jaws, a stapler magazine and a power supply system. When in use, first place the human tissue to be sutured into the jaw part, then close the jaws and activate the instrument. After activation, the instrument will use mechanical force to push the staples in the stapler magazine into the tissue and form a closed structure on the other side. At the same time, the electric stapler can also integrate a cutting function, which can perform cutting while completing the anastomosis to separate the unnecessary parts.

[0004] In an electric stapler, the jaws are the main actuator of the stapler, which integrates the functions of clamping, cutting and suturing. If the jaws cannot be closed accurately, the staplers will not be able to achieve normal suturing effects, and the blades in the stapler will not be able to accurately cut the tissues. Therefore, quality inspection of the jaws is one of the important links in factory production. At present, the inspection of the closed state of the jaws of electric staplers mainly adopts visual inspection, that is, workers control the closing of the jaws and observe whether there are deviations, misalignments and other situations that cannot be completely closed. This detection method is prone to detection errors, and its detection accuracy is low and the detection speed is slow. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a device and method for detecting the jaw closure of an electric stapler, and the specific technical solution adopted is:

[0006] An electric stapler jaw closure detection device comprises a clamping unit, a support ring, a long plate and a laser rangefinder, wherein the clamping unit is used to clamp and fix the stapler jaw, the support ring is mounted on the clamping unit, and the stapler jaw is coaxial with the support ring, the long plate is slidably mounted on the support ring, and the sliding direction of the long plate is along the radial direction of the support ring, the laser rangefinder is fixed on the long plate, and the laser rangefinder is used to measure the distance of the stapler jaw.

[0007] Furthermore, the support ring rotates on the clamping unit, and the rotation axis of the support ring is its own axis. The clamping unit is provided with a driving motor and a transmission wheel for driving the support ring to rotate.

[0008] Further, the support ring is provided with a notch, the notch is along the radial direction of the support ring, a rotating disk is arranged in the notch, and the long plate is slidably installed in the notch, the side wall of the long plate facing the rotating disk is arranged in an arc-shaped groove, and oblique teeth are arranged on the inner wall of the arc-shaped groove, and oblique teeth are arranged on the outer wall of the rotating disk, and the oblique teeth on the rotating disk are meshed with the oblique teeth in the arc-shaped groove;

[0009] A support plate is fixed on the support ring, a first motor is arranged on the support plate, and an output end of the first motor is transmission-connected to the turntable.

[0010] Furthermore, an inclined seat is provided at the end of the long plate facing the axis of the support ring, and the laser rangefinder is fixed on the inclined seat.

[0011] Further, the clamping unit is composed of a fixed disk and a rotating drum, the rotating drum passes through the fixed disk and rotates relatively, the fixed disk supports the rotating drum, two clamping groups are arranged on both end surfaces of the rotating drum, the clamping group is composed of two long tubes, the two long tubes are relatively distributed around the axis of the fixed disk, the long tubes are rotatably mounted on the rotating drum, and the length direction of the long tubes is perpendicular to the axis of the fixed disk, a sliding rod is slidably arranged in the long tube, and the end of the sliding rod extends out of the long tube and is rotatably mounted on the fixed disk;

[0012] Among them, the directions of the two clamping groups on the same side of the rotating drum are perpendicular to each other. When the rotating drum rotates on the fixed disk, the rotating drum will drive the long tube and the sliding rod in the clamping group to move on the plane perpendicular to the axis of the fixed disk, that is, the long tube and the sliding rod are close to or away from the axis of the fixed disk, and the support ring is coaxially installed on the fixed disk.

[0013] Furthermore, the interior of the fixed disk is hollow, a worm gear is provided on the outer wall of the rotating drum inside the fixed disk, a second motor is fixed in the fixed disk, an output end of the second motor is provided with a worm gear, and the worm gear is meshed with the worm gear on the outer wall of the rotating drum.

[0014] Furthermore, a fixing platform is rolled on the side wall of the fixing disk, a positioning plate is slidably provided on the fixing platform, the positioning plate is used to position the jaws of the stapler, and the positioning plate and the fixing platform are fastened and connected by a lock nut.

[0015] A method for detecting jaw closure of an electric stapler comprises the following steps:

[0016] S1, opening the clamping unit and allowing the stapler jaw to pass through the clamping unit, the clamping unit fixes the stapler jaw, and at this time the stapler jaw is coaxial with the support ring;

[0017] S2, the support ring is rotated on the clamping unit around the axis of the stapler jaw, and the long plate slides on the support ring, and the laser rangefinder synchronously performs a circular motion and actively approaches the axis of the stapler jaw;

[0018] S3, when the laser rangefinder detects the end position of the movable arm on the jaws of the stapler, the support ring stops rotating, and the laser rangefinder and the movable arm on the jaws of the stapler are in a coplanar state;

[0019] S4, calculating the required position information of the stapler jaw movable arm based on the position of the laser rangefinder, the distance value detected by the laser rangefinder, the specified length of the stapler jaw movable arm, and the specified inclination angle of the stapler jaw movable arm;

[0020] S5. The long plate continues to move, and the laser rangefinder detects the distance between it and the movable arm of the stapler jaw. The qualified status of the stapler jaw is determined by comparing and analyzing the detection value of the laser rangefinder with the calculated position information of the movable arm of the stapler jaw.

[0021] The advantages of the present invention are:

[0022] By measuring the distance information of the movable arm on the stapler jaws and combining it with the specified information of the movable arm on the stapler jaws, it is possible to determine whether the movable arm on the stapler jaws is bent, has an excessively large opening angle, has an excessively small opening angle, has an inclined movable arm, and other abnormal information, thereby determining whether the movable arm on the stapler jaws can be completely closed when rotating, thereby reducing the error caused by human factors and improving the accuracy of detection;

[0023] Through this detection method, the closure detection work of the stapler can be realized without operating the stapler jaws to close, thereby simplifying the detection method;

[0024] The automated testing process is faster than manual testing, improves testing efficiency, shortens testing time, and is suitable for large-scale production. It also ensures consistency and standardization of test results by simulating standard position information and comparing it with actual measurement data, thus avoiding differences caused by inconsistent testing methods.

[0025] In summary, this technical solution solves many problems existing in traditional visual inspection by introducing automated detection methods, improves the accuracy, efficiency and reliability of electric stapler jaw closure detection, and is of great significance for improving product quality and production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a schematic diagram of the structure of the present invention;

[0028] Figure 2 yes Figure 1 Right view structural diagram;

[0029] Figure 3 yes Figure 2 A schematic diagram of the enlarged structure of a medium-long board from the left;

[0030] Figure 4 yes Figure 1 Schematic diagram of the enlarged structure of the middle clamping unit;

[0031] Figure 5 yes Figure 4 Schematic diagram of the cross-sectional structure of the middle fixed plate;

[0032] Markings in the accompanying drawings:

[0033] 1. Clamping unit; 2. Support ring; 3. Long plate; 4. Laser rangefinder; 5. Stapler jaws; 6. Support plate; 7. First motor; 8. Turntable; 9. Slant seat; 10. Fixed plate; 11. Rotating drum; 12. Long tube; 13. Sliding rod; 14. Second motor; 15. Worm; 16. Positioning plate; 17. Fixed table; 18. Lock nut; 19. Drive motor; 20. Transmission wheel. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0035] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by “center”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “inside” and “outside”, etc., are based on the orientations or positional relationships 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 referred device or element 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.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. This embodiment is written in a progressive manner.

[0037] like Figure 1 to Figure 2As shown, an electric stapler jaw closure detection device of the present invention comprises a clamping unit 1, a support ring 2, a long plate 3 and a laser rangefinder 4, wherein the clamping unit 1 is used to clamp and fix the stapler jaw 5, the support ring 2 is mounted on the clamping unit 1, and the stapler jaw 5 is coaxial with the support ring 2, the long plate 3 is slidably mounted on the support ring 2, and the sliding direction of the long plate 3 is along the radial direction of the support ring 2, the laser rangefinder 4 is fixed on the long plate 3, and the laser rangefinder 4 is used to measure the distance of the stapler jaw 5.

[0038] In detail, the stapler jaw 5 is composed of a straight rod part, a fixed arm part and a movable arm part. The fixed arm and the movable arm form a jaw shape. The fixed arm is collinear with the straight rod. The fixed arm and the movable arm are both located at the same side end of the straight rod. The fixed arm is fixedly connected to the straight rod, and the movable arm is rotatably installed on the straight rod. When the stapler jaw 5 is tested, whether the movable arm and the fixed arm on the stapler jaw 5 can be closed normally is mainly tested, so the movement trajectory of the movable arm is mainly tested.

[0039] The clamping unit 1 can fix the stapler jaw 5 and make the stapler jaw 5 coaxial with the support ring 2. The support ring 2 is used to support the long plate 3 and the laser rangefinder 4. The laser rangefinder 4 can measure the distance between it and the movable arm on the stapler jaw 5. Since the long plate 3 can slide on the support ring 2 along the radial direction of the support ring 2, when the laser rangefinder 4 moves from a position far from the axis of the support ring 2 toward the axis of the support ring 2, due to the inclination of the movable arm of the stapler jaw 5, the distance between the laser rangefinder 4 and the movable arm of the stapler jaw 5 measured by the laser rangefinder 4 is in a regularly changing state.

[0040] When in use, the stapler jaw 5 is fixed on the clamping unit 1, and the movable arm on the stapler jaw 5 is coplanar with the long plate 3. At this time, when the long plate 3 moves, the laser rangefinder 4 and the movable arm of the stapler jaw 5 can always maintain a coplanar state, pushing the long plate 3 to move toward the axial direction of the support ring 2, and the laser rangefinder 4 gradually approaches the outer end of the movable arm of the stapler jaw 5 in a direction perpendicular to the axial direction of the support ring 2. When the laser rangefinder 4 can measure the position of the outer end of the movable arm of the stapler jaw 5, based on the point position of the outer end of the movable arm of the stapler jaw 5 measured by the laser rangefinder 4 and the known information such as the opening angle of the movable arm and the length of the movable arm, the movable arm can be simulated. Normal position information, that is, the position and angle of the movable arm that meets the standard requirements. At this time, when the long board 3 continues to move, the laser rangefinder 4 continues to measure the distance between it and the movable arm of the stapler jaw 5. When the distance measured by the laser rangefinder 4 deviates from the simulated standard distance, the stapler jaw 5 fails the detection. At this time, the movable arm on the stapler jaw 5 is bent, the angle of the movable arm is not standard, and the movable arm is tilted to one side of the axis of the stapler jaw 5. That is, the movable arm on the stapler jaw 5 cannot be closed normally with the fixed arm along the prescribed trajectory. When the distance detected by the laser rangefinder 4 meets the standard, the stapler jaw 5 can be closed normally, thereby realizing the automatic detection of the stapler jaw 5.

[0041] It should be pointed out that the device also needs to be provided with common structures such as an operation panel, a controller, a processor, etc. used in conjunction with the laser rangefinder 4, so as to achieve automatic and rapid detection.

[0042] During detection, if the movable arm on the stapler jaw 5 tilts toward one side of the axis of the stapler jaw 5, the laser rangefinder 4 will deviate from the movable arm of the stapler jaw 5 when moving, that is, the detection point of the laser rangefinder 4 on the movable arm of the stapler jaw 5 will be offset to outside the movable arm. At this time, the detection value of the laser rangefinder 4 will suddenly increase.

[0043] By measuring the distance information of the movable arm on the stapler jaw 5 and combining it with the specified information of the movable arm on the stapler jaw 5, it is possible to determine whether the movable arm on the stapler jaw 5 has abnormal information such as bending, excessive angle, too small angle, tilt of the movable arm, etc., thereby determining whether the movable arm on the stapler jaw 5 can be completely closed when rotating, thereby reducing errors caused by human factors and improving the accuracy of detection; through this detection method, its closure detection work can be achieved without operating the stapler jaw 5 to close, thereby simplifying the detection method; the automated detection process is faster than manual detection, improves detection efficiency, shortens detection time, and is suitable for the needs of large-scale production, and by simulating standard position information and comparing it with actual measurement data, it ensures the consistency and standardization of the detection results, and avoids differences caused by inconsistent detection methods; in summary, this technical solution solves many problems existing in traditional visual detection by introducing automated detection methods, improves the accuracy, efficiency and reliability of electric stapler jaw closure detection, and is of great significance for improving product quality and production efficiency.

[0044] like Figure 2 As shown, the support ring 2 rotates on the clamping unit 1, and the rotation axis of the support ring 2 is its own axis. The clamping unit 1 is provided with a driving motor 19 and a transmission wheel 20 for driving the support ring 2 to rotate.

[0045] In detail, the drive motor 19 is fixed on the clamping unit 1, the transmission wheel 20 is installed on the output end of the drive motor 19, and the transmission wheel 20 is connected to the outer wall of the support ring 2. When the drive motor 19 is running, it will drive the support ring 2 to rotate through the transmission wheel 20. It can be seen that at this time, the support ring 2 will rotate around the axis of the stapler jaw 5, thereby causing the long plate 3 and the laser rangefinder 4 to rotate around the axis of the stapler jaw 5.

[0046] During detection, through the rotation of the support ring 2 and the movement of the long plate 3 on the support ring 2, the laser rangefinder 4 can be spirally approached to the axis of the support ring 2, so that the rotation radius of the laser rangefinder 4 is gradually reduced until it can detect the outer end of the movable arm of the stapler jaw 5. The support ring 2 stops rotating, the long plate 3 moves and detects the stapler jaw 5 through the laser rangefinder 4.

[0047] The purpose of doing this is to ensure that when the stapler jaw 5 is installed, the direction of the movable arm thereof does not need to be limited. The stapler jaw 5 can be directly installed on the clamping unit 1. Through the rotation of the support ring 2, the laser rangefinder 4 can automatically find the outer end of the movable arm of the stapler jaw 5, thereby simplifying the detection method and avoiding the situation in which the movable arm of the stapler jaw 5 cannot be coplanar with the moving trajectory of the long plate 3 during manual positioning, thereby affecting the detection result.

[0048] like Figure 3As shown, the support ring 2 is provided with a notch, the notch is along the radial direction of the support ring 2, a turntable 8 is arranged in the notch, and the long plate 3 is slidably installed in the notch, the side wall of the long plate 3 facing the turntable 8 is arranged in an arc-shaped groove, and oblique teeth are arranged on the inner wall of the arc-shaped groove, and oblique teeth are arranged on the outer wall of the turntable 8, and the oblique teeth on the turntable 8 are meshed with the oblique teeth in the arc-shaped groove;

[0049] A support plate 6 is fixed on the support ring 2 , a first motor 7 is arranged on the support plate 6 , and an output end of the first motor 7 is drivingly connected to a turntable 8 .

[0050] In detail, the support plate 6 can support the first motor 7, and the first motor 7 can drive the turntable 8 to rotate. Since the turntable 8 and the long plate 3 are engaged by helical teeth, the turntable 8 can provide power for the long plate 3 to move in the radial direction of the support ring 2, thereby driving the laser rangefinder 4 to move.

[0051] like Figure 3 As shown, an inclined seat 9 is provided at the end of the long plate 3 facing the axis of the support ring 2 , and the laser rangefinder 4 is fixed on the inclined seat 9 .

[0052] In detail, by setting the inclined seat 9, the laser rangefinder 4 can be conveniently placed in an inclined state, and the detection direction of the laser rangefinder 4 is perpendicular to the movable arm on the stapler jaw 5, so that the laser can be conveniently irradiated onto the movable arm and smoothly reflected back into the laser rangefinder 4, thereby facilitating the laser rangefinder 4 to detect the distance between it and the movable arm of the stapler jaw 5, and avoiding the situation where the detection direction of the laser rangefinder 4 is relatively inclined to the movable arm of the stapler jaw 5, and the laser reflected by the movable arm of the stapler jaw 5 deviates greatly from the laser rangefinder 4, resulting in the laser rangefinder 4 being unable to receive enough reflected laser and affecting the detection accuracy. When the long board 3 moves, the detection direction of the laser rangefinder 4 can always be perpendicular to the movable arm of the stapler jaw 5.

[0053] like Figure 4 As shown, the clamping unit 1 is composed of a fixed disk 10 and a rotating drum 11. The rotating drum 11 passes through the fixed disk 10 and rotates relatively. The fixed disk 10 supports the rotating drum 11. Two clamping groups are arranged on both end surfaces of the rotating drum 11. The clamping groups are composed of two long tubes 12. The two long tubes 12 are relatively distributed around the axis of the fixed disk 10. The long tubes 12 are rotatably mounted on the rotating drum 11, and the length direction of the long tubes 12 is perpendicular to the axis of the fixed disk 10. A sliding rod 13 is slidably arranged in the long tube 12, and the end of the sliding rod 13 extends out of the long tube 12 and is rotatably mounted on the fixed disk 10.

[0054] Among them, the directions of the two clamping groups on the same side of the rotating drum 11 are perpendicular to each other. When the rotating drum 11 rotates on the fixed disk 10, the rotating drum 11 will drive the long tube 12 and the sliding rod 13 in the clamping group to move on the plane perpendicular to the axis of the fixed disk 10, that is, the long tube 12 and the sliding rod 13 are close to or away from the axis of the fixed disk 10, and the support ring 2 is coaxially rotatably installed on the fixed disk 10.

[0055] In detail, the stapler jaw 5 passes through the rotating drum 11, and the fixed disk 10 can support and fix the rotating drum 11 and the clamping group thereon. The long tube 12 and the slide bar 13 are both in a right angle shape. One end of the long tube 12 and one end of the slide bar 13 are rotatably mounted on the rotating drum 11 and the fixed disk 10 respectively, and the other end of the slide bar 13 is slidably inserted into the other end of the long tube 12, thereby making the long tube 12 and the slide bar 13 form a retractable clamping arm. When the rotating drum 11 rotates on the fixed disk 10, the rotating drum 11 will drive the long tube 12 and the slide bar 13 to move the slide bar 13 on the fixed disk 1 0 is the rotation point, and the long tube 12 and the slide bar 13 are close to or away from the axis of the fixed disk 10. Since the two long tubes 12 in the clamping group are relatively distributed around the axis of the fixed disk 10, when the rotating drum 11 rotates, the two long tubes 12 move close to or away from each other, and the two long tubes 12 can always move relative to each other with the axis of the fixed disk 10 as the reference axis, that is, the two long tubes 12 are close to or away from each other. When the two long tubes 12 are close to each other, they can clamp and fix the stapler jaws 5 between the two long tubes 12.

[0056] Since the two clamping groups on the same side of the fixed disk 10 are perpendicular to each other, the stapler jaws 5 can be clamped and fixed in two directions, thereby realizing the centering and positioning of the stapler jaws 5. At this time, the stapler jaws 5 will be coaxial with the fixed disk 10, and this clamping method can realize the positioning and clamping of stapler jaws 5 of different diameters. By arranging clamping groups on both sides of the fixed disk 10, two clamping points can be provided for the stapler jaws 5, thereby realizing the firm clamping and fixing of the stapler jaws 5, and avoiding the situation where the stapler jaws 5 are tilted and cannot be coaxial with the fixed disk 10 when only one clamping point is set.

[0057] like Figure 5 As shown, the interior of the fixed disk 10 is hollow, and a worm gear is provided on the outer wall of the rotating drum 11 inside the fixed disk 10. A second motor 14 is fixed inside the fixed disk 10, and a worm 15 is provided at the output end of the second motor 14. The worm 15 meshes with the worm gear on the outer wall of the rotating drum 11.

[0058] In detail, the second motor 14 and the worm 15 can provide power for the rotation of the drum 11, and this structural method can better hide the second motor 14 and the worm 15, so as to facilitate smooth transmission between the second motor 14 and the drum 11, and avoid the situation where the second motor 14 is installed on the outside of the fixed plate 10 and the installation space between it and the drum 11 is too small, making it difficult to assemble.

[0059] like Figure 1 As shown, a fixing platform 17 is rolled on the side wall of the fixing disk 10 , and a positioning plate 16 is slidably provided on the fixing platform 17 . The positioning plate 16 is used to position the stapler jaws 5 , and the positioning plate 16 and the fixing platform 17 are fastened together by a lock nut 18 .

[0060] In detail, the support ring 2 is located on one side of the fixed disk 10, and the fixed platform 17 is located on the other side of the fixed disk 10. The positioning plate 16 on the fixed platform 17 is used to block and position the end of the stapler jaw 5. This can facilitate the positioning of the movable arm on the stapler jaw 5, thereby avoiding the situation where the movable arm on the stapler jaw 5 is far away from or close to the fixed disk 10, and the movable stroke of the long plate 3 on the support ring 2 cannot meet the normal detection work of the laser rangefinder 4 on the stapler jaw 5. Since the positioning plate 16 can move on the fixed platform 17, it is convenient to detect stapler jaws 5 of different lengths.

[0061] A method for detecting jaw closure of an electric stapler comprises the following steps:

[0062] S1, opening the clamping unit 1 and allowing the stapler jaw 5 to pass through the clamping unit 1, the clamping unit 1 fixes the stapler jaw 5, and at this time the stapler jaw 5 is coaxial with the support ring 2;

[0063] S2, the support ring 2 is rotated on the clamping unit 1 around the axis of the stapler jaw 5, and the long plate 3 slides on the support ring 2, and the laser rangefinder 4 synchronously performs a circular motion and actively approaches the axis of the stapler jaw 5;

[0064] S3, when the laser rangefinder 4 detects the end position of the movable arm on the stapler jaw 5, the support ring 2 stops rotating, and the laser rangefinder 4 and the movable arm on the stapler jaw 5 are in a coplanar state;

[0065] S4, calculating the required position information of the movable arm of the stapler jaw 5 based on the position of the laser rangefinder 4, the distance value detected by the laser rangefinder 4, the specified length of the movable arm of the stapler jaw 5, and the specified inclination angle of the movable arm of the stapler jaw 5;

[0066] S5, the long plate 3 continues to move, and the laser rangefinder 4 detects the distance between it and the movable arm of the stapler jaw 5. The qualified status of the stapler jaw 5 is determined by comparing and analyzing the detection value of the laser rangefinder 4 with the calculated position information of the movable arm of the stapler jaw 5.

[0067] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A device for detecting jaw closure of an electric stapler, characterized in that: The invention comprises a clamping unit (1), a support ring (2), a long plate (3) and a laser rangefinder (4); the clamping unit (1) is used to clamp and fix a stapler jaw (5); the support ring (2) is mounted on the clamping unit (1), and the stapler jaw (5) is coaxial with the support ring (2); the long plate (3) is slidably mounted on the support ring (2), and the sliding direction of the long plate (3) is along the radial direction of the support ring (2); the laser rangefinder (4) is fixed on the long plate (3), and the laser rangefinder (4) is used to measure the distance of the stapler jaw (5).

2. The electric stapler jaw closure detection device according to claim 1, characterized in that: The support ring (2) rotates on the clamping unit (1), and the rotation axis of the support ring (2) is its own axis. The clamping unit (1) is provided with a drive motor (19) and a transmission wheel (20) for driving the support ring (2) to rotate.

3. The electric stapler jaw closure detection device according to claim 2, characterized in that: The support ring (2) is provided with a notch, the notch being along the radial direction of the support ring (2), a rotating disk (8) being arranged in the notch, and the long plate (3) being slidably mounted in the notch, the side wall of the long plate (3) facing the rotating disk (8) being arranged in an arc-shaped groove, and oblique teeth being arranged on the inner wall of the arc-shaped groove, and oblique teeth being arranged on the outer wall of the rotating disk (8), and the oblique teeth on the rotating disk (8) meshing with the oblique teeth in the arc-shaped groove; A support plate (6) is fixed on the support ring (2), a first motor (7) is arranged on the support plate (6), and an output end of the first motor (7) is drivingly connected to the rotating disk (8).

4. The electric stapler jaw closure detection device according to claim 3, characterized in that: An inclined seat (9) is provided at the end of the long plate (3) facing the axis of the support ring (2), and the laser rangefinder (4) is fixed on the inclined seat (9).

5. The electric stapler jaw closure detection device according to claim 4, characterized in that: The clamping unit (1) is composed of a fixed disk (10) and a rotating drum (11). The rotating drum (11) passes through the fixed disk (10) and rotates relatively. The fixed disk (10) supports the rotating drum (11). Two clamping groups are arranged on both end surfaces of the rotating drum (11). The clamping groups are composed of two long tubes (12). The two long tubes (12) are relatively distributed around the axis of the fixed disk (10). The long tubes (12) are rotatably mounted on the rotating drum (11), and the length direction of the long tubes (12) is perpendicular to the axis of the fixed disk (10). A sliding rod (13) is slidably arranged in the long tube (12). The end of the sliding rod (13) extends out of the long tube (12) and is rotatably mounted on the fixed disk (10). The directions of the two clamping groups on the same side of the rotating drum (11) are perpendicular to each other. When the rotating drum (11) rotates on the fixed disk (10), the rotating drum (11) drives the long tube (12) and the sliding rod (13) in the clamping group to move on a plane perpendicular to the axis of the fixed disk (10), that is, the long tube (12) and the sliding rod (13) approach or move away from the axis of the fixed disk (10), and the support ring (2) is coaxially rotatably mounted on the fixed disk (10).

6. The electric stapler jaw closure detection device according to claim 5, characterized in that: The interior of the fixed disk (10) is hollow, and a worm gear is provided on the outer wall of the rotating drum (11) inside the fixed disk (10). A second motor (14) is fixed inside the fixed disk (10), and a worm gear (15) is provided at the output end of the second motor (14), and the worm gear (15) meshes with the worm gear on the outer wall of the rotating drum (11).

7. The electric stapler jaw closure detection device according to claim 6, characterized in that: A fixing platform (17) is rolled on the side wall of the fixing disk (10), and a positioning plate (16) is slidably provided on the fixing platform (17). The positioning plate (16) is used to position the jaws (5) of the stapler. The positioning plate (16) and the fixing platform (17) are fastened together by a lock nut (18).

8. A method for detecting jaw closure of an electric stapler, applicable to a jaw closure detection device for an electric stapler according to any one of claims 1 to 7, characterized in that: The steps include: S1, opening the clamping unit (1) and allowing the stapler jaw (5) to pass through the clamping unit (1), the clamping unit (1) fixing the stapler jaw (5), at which time the stapler jaw (5) is coaxial with the support ring (2); S2, causing the support ring (2) to rotate on the clamping unit (1) around the axis of the stapler jaw (5), and the long plate (3) to slide on the support ring (2), and the laser rangefinder (4) to synchronously perform a circular motion and actively approach the axis of the stapler jaw (5); S3, when the laser rangefinder (4) detects the end position of the movable arm on the stapler jaws (5), the support ring (2) stops rotating, and the laser rangefinder (4) and the movable arm on the stapler jaws (5) are in a coplanar state; S4, calculating the required position information of the movable arm of the stapler jaw (5) based on the position of the laser rangefinder (4), the distance value detected by the laser rangefinder (4), the specified length of the movable arm of the stapler jaw (5), and the specified inclination angle of the movable arm of the stapler jaw (5); S5, the long plate (3) continues to move, and the laser rangefinder (4) detects the distance between it and the movable arm of the stapler jaw (5). By comparing and analyzing the detection value of the laser rangefinder (4) with the calculated position information of the movable arm of the stapler jaw (5), the qualification of the stapler jaw (5) is determined.

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