Continuous stress application type anastomat with adjustable clamping thickness and use method of continuous stress application type anastomat

Abstract

The invention relates to an anastomat, in particular to a clamping-thickness-adjustable continuous stress application type anastomat and a using method thereof.The clamping-thickness-adjustable continuous stress application type anastomat comprises a nail abutting framework, a nail bin, a nail pushing piece, a thickness adjusting assembly, a continuous stress application assembly and a reset assembly; suturing nails are loaded in the nail bin; the nail pushing piece is used for pushing the suturing nails out of the nail bin from the output surface; the thickness adjusting assembly is used for adjusting the clamping distance; the continuous stress application assembly is used for pushing the nail pushing piece to move towards the nail bin; and the resetting assembly is used for resetting the anastomat. Compared with the prior art, the problems that in the prior art, tissues with different thicknesses cannot be accurately clamped, and a handle needs to be continuously pressed to keep the clamping state are solved, the novel anastomat achieves accurate clamping of the tissues with different thicknesses, and a doctor does not need to continuously press the handle to keep the clamping state.

Description

Technical Field

[0001] The invention relates to a stapler, in particular to a continuous force-applying stapler with adjustable clamping thickness and a use method thereof. Background Art

[0002] Traditional suturing surgery requires manual suturing, which is a complicated process and may cause some complications after surgery. With the development of modern science and technology and the improvement of technology, the staplers used in clinical practice are easy to use, fast to suturing and rarely cause surgical complications. These advantages also make it possible to remove tumors that were previously inoperable. With the deepening of globalization, staplers are being used by more and more medical staff as an efficient and accurate tissue processing tool.

[0003] At present, many efforts have been made to improve the stapler, with remarkable results. Various structural schemes have been designed and national patents have been approved, such as "Disposable stapler with automatic safety device" (CN100518669C), "Disposable arc-shaped cutting stapler" (CN201179083Y), "A disposable stapler" (CN219516414U), etc., which have different innovations on the handle; the limited position structure in "Disposable stapler with anti-secondary firing mechanism" (CN102772234B) can prevent the stapler from being re-fired. Although the existing technology is helpful to medical workers in different working environments to a certain extent, as a common surgical instrument for vascular surgery, gastrointestinal surgery, etc., and one of the necessary surgical instruments for specific surgeries, it still has shortcomings and needs to be further improved.

[0004] For example, during a stapler operation, medical staff first need to clamp the human tissue to be sutured before pulling the movable handle, but they often encounter the problem of mismatch between tissue thickness and clamping spacing, which may cause adverse effects on the anastomosis effect due to clamping too tightly or too loosely. The clamping spacing of the currently popular linear stapler cannot be adjusted, so it cannot accurately adapt to the clamping tightness required for different clamping thicknesses of different human tissues.

[0005] In addition, "A linear stapler with a safety mechanism (CN113367752A)" mentions that the stapler needs to wait for a period of time after firing. During this period, the medical staff needs to keep pressing the movable handle with appropriate force, which makes it inconvenient to use other surgical instruments such as needle holders, forceps, needles and threads, resulting in a time-consuming and laborious surgical process, a long surgical operation time, and a difficult to ensure surgical effect, which will also increase the technical level and experience required for doctors to operate instruments.

[0006] How to design a new type of stapler to accurately clamp tissues of different thicknesses, reduce the difficulty of operation, and eliminate the time-consuming and laborious problem of doctors relying on experience and feel to continuously press the handle to maintain the clamping state for tissues of different thicknesses, thereby shortening the operation time, improving operation efficiency, reducing operation risks and reducing the occurrence of postoperative complications, and ultimately improving the operation effect and patient treatment effect has become a technical problem that needs to be solved urgently. Summary of the invention

[0007] The purpose of the present invention is to provide a continuous force-applying stapler with adjustable clamping thickness and a method of using the same in order to solve at least one of the above problems, so as to solve the problem in the prior art that tissues of different thicknesses cannot be accurately clamped and the handle needs to be continuously pressed to maintain the clamping state. The new stapler proposed in this solution can accurately clamp tissues of different thicknesses, reduce the difficulty of operation, and eliminate the time-consuming and laborious problem of doctors relying on experience and hand feel to continuously press the handle to maintain the clamping state for tissues of different thicknesses, thereby shortening the operation time, improving the operation efficiency, reducing the operation risk and reducing the occurrence of postoperative complications, and ultimately improving the operation effect and the patient's treatment effect.

[0008] The purpose of the present invention is achieved through the following technical solutions:

[0009] The first aspect of the present invention discloses a continuous force-applying stapler with adjustable clamping thickness, comprising a staple anvil frame, a staple cartridge, a staple pusher, a thickness adjustment component, a continuous force-applying component and a reset component;

[0010] The staple cartridge is loaded with suture staples, and the output surface of the staple cartridge is arranged opposite to the front end of the staple support frame;

[0011] The front end of the nail pushing piece extends into the nail magazine and abuts against the suture nail, and the rear end of the nail pushing piece is movably connected to the nail abutment frame. The nail pushing piece is used to push the suture nail out of the nail magazine from the output surface;

[0012] The thickness adjustment assembly includes a reduced shaft end in front of the partition, a threaded screw, a reamer end in the rear of the partition, a dial, an active hinge crank and a driven hinge connecting rod, and the thickness adjustment assembly is used to adjust the clamping distance between the output surface of the nail magazine and the nail support frame;

[0013] The dial is driven by a gear set and a threaded screw;

[0014] The threaded lead screw is threadedly connected to the contracted end in front of the partition, and the threaded lead screw is rotatably connected to the expanded end in the rear of the partition;

[0015] The front shrinkage end of the partition is connected to the nail magazine;

[0016] The rear expanded hole end of the partition is rotatably connected to the driven hinge connecting rod;

[0017] The front shrinking end of the partition and the rear expanding end of the partition are located on the same straight line, and the rear expanding end of the partition is provided with an opening for accommodating the front shrinking end of the partition on one side facing the front shrinking end of the partition;

[0018] The driven hinge connecting rod is rotationally connected to the active hinge crank;

[0019] The active hinge crank is rotatably connected to the anvil frame;

[0020] The continuous force-adding component is arranged through the nail-pushing piece connecting rod and the nail-pushing piece transmission, and the continuous force-adding component includes a movable handle, a connecting rod, a claw reset torsion spring, a claw and a ratchet, and the continuous force-adding component is used to push the nail-pushing piece to move toward the nail magazine;

[0021] The ratchet is rotatably connected with the nail support frame and the nail pusher connecting rod, and ratchet teeth are also arranged on the ratchet, and the ratchet teeth are meshed with the pawl;

[0022] The linkage rod is arranged through a connecting rod and a ratchet transmission (the connection position between the connecting rod and the ratchet and the connection position between the nail pusher connecting rod and the ratchet should be arranged to ensure that when the ratchet is rotated by the movable handle, the nail pusher connecting rod can be driven to push the nail pusher forward);

[0023] The linkage rod and the claw are rotatably connected to the movable handle via a claw fixing rod;

[0024] The claw reset torsion spring is sleeved on the claw fixing rod, the fixed end of the claw reset torsion spring is assembled on the movable handle, and the movable end of the claw reset torsion spring is pressed toward the claw;

[0025] The resetting component is movably connected to the rear end of the anvil frame, and is used for resetting the stapler.

[0026] Preferably, the thickness adjustment assembly further comprises a retaining spring, which is sleeved on the threaded screw, and one side surface of the retaining spring abuts against the outer wall surface of the rear expansion hole end of the partition.

[0027] Preferably, the continuous force component also includes a linkage rod reset torsion spring sleeved on the claw fixing rod; the fixed end of the linkage rod reset torsion spring is assembled on the movable handle, and the movable end of the linkage rod reset torsion spring is pressed toward the linkage rod.

[0028] Preferably, the ratchet is rotatably connected to the anvil frame through a ratchet connecting screw, the ratchet connecting screw passes through the ratchet setting and is connected to a ratchet connecting nut at the end; a left ratchet compression spring is sleeved between the ratchet connecting screw and the ratchet, and a right ratchet compression spring is sleeved between the ratchet connecting nut and the ratchet, and the left ratchet compression spring and the right ratchet compression spring are used to press the ratchet together.

[0029] Preferably, the reset assembly comprises a reset twist, a reset pressure rod, a reset spring, a right reset sheet and a left reset sheet;

[0030] The reset torsion is rotatably connected to the rear end of the nail support frame, and the reset torsion is arranged through the reset pressure rod and the active hinge crank transmission;

[0031] The right reset piece and the left reset piece are movably connected to the anvil frame, and the right reset piece and the left reset piece are respectively located on both sides of the reset pressure rod;

[0032] The right reset plate and the left reset plate are also connected to the anvil frame through a reset spring.

[0033] Preferably, the stapler further comprises a staple-pushing torsion spring, one end of which is connected to the ratchet, and the other end of which is pressed toward the staple-pushing plate connecting rod.

[0034] Preferably, the stapler further comprises a positioning assembly, and the positioning assembly comprises a push rod, a slot, a left positioning push knob and a right positioning push knob;

[0035] A positioning pin is also provided inside the nail magazine;

[0036] The front end of the push rod extends into the interior of the nail magazine and abuts against the positioning pin, a U-shaped groove is provided in the middle of the push rod, and an axisymmetric short pin is provided at the rear end of the push rod; the push rod is arranged between the front end of the partition and the nail pushing piece, and the push rod is connected to the nail pushing piece;

[0037] The clamping slot is rotatably connected to the anvil frame, and a push shaft is provided on the clamping slot, and the push shaft is embedded in the U-shaped slot;

[0038] The left positioning push knob and the right positioning push knob are respectively connected to the short pins on both sides of the push rod;

[0039] The positioning assembly is used to push the positioning pin out of the nail magazine from the output surface.

[0040] Preferably, the positioning pin is also sleeved with a positioning pin return spring.

[0041] Preferably, the stapler further comprises a housing;

[0042] The shell is coated on the rear part of the nail support frame, so that the thickness adjustment component, the continuous force component and the reset component are located in the coating area of ​​the shell;

[0043] The housing is movably connected to the reset component;

[0044] The rear end of the shell is arranged as a fixed handle.

[0045] Preferably, an opening is provided on the top surface of the shell, the dial extends out of the shell from the opening, and a digital scale mark is provided on the dial;

[0046] The fixed handle is provided with anti-slip stripes;

[0047] The movable handle is provided with anti-skid leather texture.

[0048] The second aspect of the present invention discloses a method for using a continuous force-applying stapler with adjustable clamping thickness as described above, comprising the following steps:

[0049] When the stapler is not activated, there is an angle between the driven hinge connecting rod and the active hinge crank, the nail pushing piece connecting rod is located below the nail pushing piece, and the nail pushing piece connecting rod cannot push the nail pushing piece;

[0050] The clamping distance between the staple cartridge and the staple frame is pre-adjusted by turning the dial, and the movable handle is repeatedly pulled to push the active hinge crank through the ratchet, so that the driven hinge connecting rod and the active hinge crank are located on the same straight line, and the ratchet is locked with the help of the claw. At the same time, the stapler is pushed forward and the stapler enters the excitation state;

[0051] Pulling the movable handle back to reset the movable handle, the claw locks the ratchet wheel through the restoring force of the claw reset torsion spring, so that the nail pushing piece connecting rod moves to the rear end of the nail pushing piece;

[0052] The movable handle is repeatedly pulled again to drive the ratchet wheel to rotate, so that the nail-pushing piece connecting rod pushes the nail-pushing piece, and the nail-pushing piece pushes the suture nail out of the nail bin;

[0053] Pressing the reset component resets the moving components in the stapler (including the staple cartridge, the staple pushing piece, the thickness adjustment component, the staple pushing piece connecting rod, the staple pushing torsion spring, and the continuous force application component).

[0054] The working principle of the present invention is:

[0055] By turning the dial, the gear set can drive the threaded screw to rotate, and then the shrinking shaft end in front of the partition will move relative to the expanding hole end behind the partition, so as to achieve fine adjustment of the clamping distance between the nail magazine (connected to the shrinking shaft end in front of the partition) and the nail support frame (the nail support frame does not move);

[0056] In the process of repeatedly pulling the movable handle, each time the movable handle is pulled, the claw will rotate to a certain extent under the drive of the movable handle (claw reset torsion spring) to release the lock between it and the ratchet. At this time, the connecting rod (driven by the movable handle (connecting rod reset torsion spring)) will push the ratchet to rotate, and the claw will be stuck in the ratchet teeth of the ratchet, making the ratchet unable to reverse while not affecting the forward rotation of the ratchet (achieved by the one-way setting of the ratchet teeth); and when the movable handle is released and pulled to its initial position, the claw will quickly reset and disengage from the ratchet under the drive of the claw reset torsion spring, so that the ratchet is quickly reset.

[0057] Compared with the prior art, the present invention has the following beneficial effects:

[0058] The present invention adopts a thickness adjustment component to change the clamping position between the stapler magazine and the stapler frame, thereby realizing the adjustment of the clamping thickness of the tissue to be sutured; at the same time, the ratchet and the claw in the continuous force-applying component can also achieve the purpose of saving effort, avoid continuous pressing, so as to reduce the hand force strength of medical staff when using the stapler, realize slow staple pushing and clamping, and avoid the damage to the required sutured skin tissue caused by rapid force. The present invention can not only meet the requirements of patients for different tissues on suture thickness, but also reduce the hand force strength of medical staff and prevent hand fatigue. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] Figure 1 It is a side view (partial perspective) structural schematic diagram of the stapler of the present invention;

[0060] Figure 2 It is a schematic structural diagram of the positioning assembly of the present invention on the stapler;

[0061] Figure 3 It is a structural schematic diagram of the positioning assembly of the present invention (the push rod is separated from the card slot);

[0062] Figure 4 It is a schematic diagram of the structure of the push rod in the positioning assembly of the present invention;

[0063] Figure 5 It is a structural schematic diagram of a card slot in a positioning assembly of the present invention;

[0064] Figure 6 It is a schematic side cross-sectional structural diagram of a nail magazine of the present invention;

[0065] Figure 7 It is a schematic structural diagram of the thickness adjustment component of the present invention on the stapler;

[0066] Figure 8 It is a structural schematic diagram of the nail magazine and the front retracted shaft end of the partition of the present invention;

[0067] Fig. 9It is a structural schematic diagram of the thickness adjustment assembly of the present invention (excluding the driven hinge connecting rod and the active hinge crank);

[0068] Fig.10 It is a structural schematic diagram of a threaded screw in a thickness adjustment assembly of the present invention;

[0069] Fig.11 It is a schematic structural diagram of the continuous force-applying component of the present invention on the stapler;

[0070] Fig.12 It is a structural schematic diagram of the linkage rod in the continuous force-applying assembly of the present invention;

[0071] Fig.13 It is a schematic diagram of the structure of the claw and the ratchet in the continuous force-applying assembly of the present invention;

[0072] Fig.14 It is a schematic structural diagram of the linkage rod, the connecting rod and the ratchet wheel in the continuous force-applying assembly of the present invention;

[0073] Fig.15 It is a structural schematic diagram of the transmission mode of the continuous force-applying component and the thickness-adjusting component of the present invention;

[0074] Fig.16 It is a structural schematic diagram of a nail-pushing piece connecting rod and a nail-pushing torsion spring of the present invention;

[0075] Fig.17 It is a schematic structural diagram of the stapler of the present invention in an unactivated state;

[0076] Fig.18 It is a structural schematic diagram of the stapler of the present invention in an excited state;

[0077] Fig.19 It is a schematic structural diagram of the resetting assembly of the present invention on the stapler;

[0078] Fig. 20 It is a schematic diagram of the structure of the reset spring in the reset assembly of the present invention;

[0079] Fig.21 It is a structural schematic diagram of the reset assembly of the present invention (excluding the right reset plate, the left reset plate and the reset spring);

[0080] Fig. 22 It is a schematic structural diagram of a stapler of the present invention;

[0081] Fig.23 It is a schematic diagram of the structure of the opening in the housing of the present invention;

[0082] Fig.24 It is a schematic diagram of the structure of a fixed handle in the housing of the present invention;

[0083] Fig.25 It is a structural schematic diagram of a dial in a thickness adjustment assembly of the present invention;

[0084] Fig.26 It is a structural schematic diagram of a movable handle in a continuous force-applying assembly of the present invention;

[0085] In the figure:

[0086] 1-Anvil skeleton;

[0087] 2-nail magazine; 201-positioning needle; 202-positioning needle return spring;

[0088] 3-Staples;

[0089] 4-nail pusher;

[0090] 5-thickness adjustment assembly; 501-shrinkage end in front of the partition; 502-threaded screw; 503-expanding end behind the partition; 504-circlip; 505-small gear; 506-connecting shaft; 507-large gear; 508-dial; 5081-digital scale mark; 509-active hinge crank; 5091-rear shaft of active hinge crank; 510-driven hinge connecting rod;

[0091] 6-housing; 6001-fixed handle; 6002-anti-slip stripes; 6003-opening;

[0092] 7- nail pusher connecting rod;

[0093] 8-Push pin torsion spring;

[0094] 9-Continuous force component; 901-Moveable handle; 9011-Anti-slip leather grain; 902-Ratchet connecting nut; 903-Ratchet compression spring on the right; 904-Linking rod reset torsion spring; 905-Claw fixing rod; 906-Linking rod; 907-Claw reset torsion spring; 908-Linking rod fixing piece; 909-Claw; 910-Connecting rod; 911-Ratchet fixing piece; 912-Ratchet connecting screw; 913-Ratchet compression spring on the left; 914-Ratchet;

[0095] 10-positioning assembly; 101-push rod; 102-slot; 103-left positioning push knob; 104-right positioning push knob;

[0096] 11-reset assembly; 111-reset twist; 112-reset pressure rod; 113-reset spring; 114-right reset plate; 115-left reset plate. DETAILED DESCRIPTION

[0097] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0098] Example 1

[0099] A continuous force-adding stapler with adjustable clamping thickness, such as Figure 1-26 As shown, it includes a nail support frame 1, a nail magazine 2, a nail pusher 4, a thickness adjustment component 5, a continuous force component 9 and a reset component 11;

[0100] The staple cartridge 2 is loaded with suture staples 3, and the output surface of the staple cartridge 2 is arranged opposite to the front end of the staple anvil frame 1;

[0101] The front end of the nail pushing piece 4 extends into the interior of the nail magazine 2 and abuts against the suture nail 3, and the rear end of the nail pushing piece 4 is movably connected to the nail anvil frame 1. The nail pushing piece 4 is used to push the suture nail 3 out of the nail magazine 2 from the output surface;

[0102] The thickness adjustment component 5 includes a reduced shaft end 501 in front of the partition, a threaded screw 502, a reamer end 503 in the rear of the partition, a dial 508, an active hinge crank 509 and a driven hinge connecting rod 510. The thickness adjustment component 5 is used to adjust the clamping distance between the output surface of the nail magazine 2 and the nail support frame 1;

[0103] The dial 508 is driven by a gear set and a threaded screw 502;

[0104] The threaded screw 502 is threadedly connected to the front shrinkage end 501 of the partition, and the threaded screw 502 is rotatably connected to the rear expansion end 503 of the partition;

[0105] The front shrinkage end 501 of the partition is connected to the nail magazine 2;

[0106] The rear reaming end 503 of the partition is rotatably connected to the driven hinge connecting rod 510;

[0107] The front axle-shrinking end 501 of the partition and the rear axle-expanding end 503 of the partition are located on the same straight line, and the rear axle-expanding end 503 of the partition is provided with an opening toward the front axle-shrinking end 501 of the partition for accommodating the front axle-shrinking end 501 of the partition;

[0108] The driven hinge connecting rod 510 is rotatably connected to the driving hinge crank 509;

[0109] The active hinge crank 509 is rotatably connected to the anvil frame 1;

[0110] The continuous force component 9 is arranged through the nail pushing piece connecting rod 7 and the nail pushing piece 4, and the continuous force component 9 includes a movable handle 901, a connecting rod 906, a claw reset torsion spring 907, a claw 909 and a ratchet 914. The continuous force component 9 is used to push the nail pushing piece 4 to move toward the nail magazine 2;

[0111] The ratchet wheel 914 is rotatably connected to the nail support frame 1 and the nail pusher connecting rod 7. The ratchet wheel 914 is also provided with ratchet teeth, and the ratchet teeth are meshed with the pawl 909.

[0112] The linkage rod 906 is arranged through the transmission of the connecting rod 910 and the ratchet 914, and the connection position between the connecting rod 910 and the ratchet 914 and the connection position between the nail pusher connecting rod 7 and the ratchet 914 are located on both sides of the connection position between the ratchet 914 and the nail support frame 1;

[0113] The linkage rod 906 and the claw 909 are rotatably connected to the movable handle 901 via the claw fixing rod 905;

[0114] The claw reset torsion spring 907 is sleeved on the claw fixing rod 905, the fixed end of the claw reset torsion spring 907 is assembled on the movable handle 901, and the movable end of the claw reset torsion spring 907 is pressed toward the claw 909;

[0115] The resetting component 11 is movably connected to the rear end of the anvil frame 1, and the resetting component 11 is used for resetting the stapler.

[0116] A method for using the above-mentioned continuous force-applying stapler with adjustable clamping thickness comprises the following steps:

[0117] When the stapler is not activated, there is an angle between the driven hinge connecting rod 510 and the active hinge crank 509, and the nail pushing piece connecting rod 7 is located below the nail pushing piece 4, so the nail pushing piece connecting rod 7 cannot push the nail pushing piece 4;

[0118] The clamping distance between the staple cartridge 2 and the staple support frame 1 is pre-adjusted by turning the dial 508, and the movable handle 901 is repeatedly turned to push the active hinge crank 509 through the ratchet 914, so that the driven hinge connecting rod 510 and the active hinge crank 509 are located on the same straight line, and the ratchet 914 is locked by the claw 909. At this time, the staple pusher 4 moves forward, and the stapler enters the excitation state;

[0119] Pulling the movable handle 901 back to reset it, the claw 909 is released from locking the ratchet 914 by the restoring force of the claw reset torsion spring 907, so that the nail pushing piece connecting rod 7 moves to the rear end of the nail pushing piece 4;

[0120] The movable handle 901 is repeatedly pulled again to drive the ratchet wheel 914 to rotate, so that the nail-pushing piece connecting rod 7 pushes the nail-pushing piece 4, and the nail-pushing piece 4 pushes the suture nail 3 out of the nail magazine 2;

[0121] Pressing the resetting component 11 resets the moving components in the stapler.

[0122] More specifically, in this embodiment:

[0123] See also Figure 1A continuous force-enhancing stapler with adjustable clamping thickness includes a staple pusher 4, a positioning assembly 10, a suture staple 3, a staple magazine 2, a thickness adjustment assembly 5, a staple support frame 1, a staple pusher torsion spring 8, a staple pusher connecting rod 7, a continuous force-enhancing assembly 9, a housing 6, and a resetting assembly 11. The nail pushing piece 4 is located inside the positioning component 10 and is connected to the positioning component 10, and the front end of the nail pushing piece 4 extends into the nail magazine 2 with the suture nail 3, and the rear end of the nail pushing piece 4 is connected to the nail support frame 1 through a spring; the front end of the positioning component 10 extends into the nail magazine 2, and a thickness adjustment component 5 is provided in the middle of the positioning component 10, and the rear end of the positioning component 10 is movably connected to the reset component 11, and the positioning component 10 itself is movably connected to the nail support frame 1; the thickness adjustment component 5 is movably connected to the nail support frame 1; the nail pushing torsion spring 8 and the nail pushing piece connecting rod 7 are installed on the continuous force component 9; the continuous force component 9 is movably installed on the nail support frame 1 at a position close to the rear end; the shell 6 covers the outside of the rear end of the nail support frame 1, so that the positioning component 10, the thickness adjustment component 5, the nail pushing torsion spring 8, the nail pushing piece connecting rod 7, the continuous force component 9, and the reset component 11 are partially or completely located inside the shell 6; the reset component 11 is movably connected to the nail support frame 1 and the shell 6.

[0124] See also Figure 1-5 , Figure 8 The positioning assembly 10 is composed of a slot 102, a push rod 101, a left positioning push knob 103 and a right positioning push knob 104, wherein the slot 102 is between the thickness adjustment assembly 5 and the reset assembly 11. The slot 102 is an axisymmetric structure, with a push shaft (for connecting the push rod 101) arranged on the top, a connecting shaft (for rotating the connection to the nail support frame 1) arranged on the bottom, and a short shaft (for rotating the connection to the rear expansion hole end 503 of the partition of the thickness adjustment assembly 5) arranged in the middle; the push rod 101 is an axisymmetric structure, the front end of the push rod 101 extends into the nail magazine 2, the push rod 101 is provided with a nail push piece 4, the middle part of the push rod 101 is provided with a U-shaped groove (the push rod 101 is connected to the slot 102 by embedding the push shaft in the U-shaped groove), the rear end of the push rod 101 is divided into two symmetrical pieces, and the ends are symmetrically provided with short pins, and the left positioning push knob 103 and the right positioning push knob 104 are respectively installed on the short pins. The nail pushing piece 4 is located inside the push rod 101 and a protrusion that can hook the push rod 101 is provided at the front end of the nail pushing piece 4, so that the nail pushing piece 4 is connected to the push rod 101, and then when the push rod 101 moves forward, it can drive the nail pushing piece 4 to move together.

[0125] See also Figure 1 , 6A positioning pin 201 is embedded in the upper part of the stapler magazine 2, and a positioning pin reset spring 202 is wound around the positioning pin 201. After the stapler is assembled, the front end of the push rod 101 abuts against the rear end of the positioning pin 201, and then the positioning pin 201 can be pushed out of the stapler magazine 2 by pushing the push rod 101 to position the tissue to be sutured. After the push rod 101 is retracted, the positioning pin 201 will automatically be retracted into the stapler magazine 2 under the elastic force of the positioning pin reset spring 202. There is also a suture pin 3 on the front end surface of the stapler magazine 2, and the suture pin 3 is pushed by the push pin sheet 4 to suture the tissue to be sutured. The front end surface of the stapler magazine 2 is arranged opposite to the front end of the staple anvil frame 1, and the gap between the two is the position for clamping the tissue to be sutured.

[0126] See also Figure 1-5 Before suturing begins, the left positioning knob 103 or the right positioning knob 104 can be pushed forward to drive the push rod 101 to move forward, so that the front end of the push rod 101 can be inserted into the nail magazine 2 to drive the positioning needle 201 to extend out of the nail magazine 2, and finally achieve the positioning of the tissue to be sutured. Then operate the thickness adjustment component 5 to pre-adjust the clamping thickness, and then operate the continuous force component 9 to suture the tissue to be sutured. After suturing is completed, the left positioning knob 103 or the right positioning knob 104 is pushed backward. At this time, the positioning needle 201 is driven to move backward under the restoring force of the positioning needle reset spring 202, and finally withdraws from the sutured tissue and retreats into the nail magazine 2.

[0127] See also Figure 1 , Figure 7 , 9, 10, the thickness adjustment assembly 5 is composed of a dial 508, a large gear 507, a connecting shaft 506, a small gear 505, a threaded screw 502, an expanded hole end 503 at the rear of the partition, a reduced shaft end 501 at the front of the partition and a retaining spring 504, an active hinge crank 509, and a driven hinge connecting rod 510. Among them, the large gear 507 and the dial 508 are concentrically connected to the connecting shaft 506, and both are key-connected to the connecting shaft 506. The rear part (smooth section) of the threaded screw 502 is concentrically connected to the small gear 505. Further, the small gear 505 and the large gear 507 are also meshed with each other to realize transmission, and then the threaded screw 502 can be driven to rotate by turning the dial 508; the threaded screw 502 is rotatably connected to the expanded hole end 503 behind the partition in the middle part (smooth section), and the front part (threaded section, with threads) of the threaded screw 502 is threadedly connected to the reduced shaft end 501 in front of the partition; on the threaded screw 502, against the outer wall surface of the expanded hole end 503 behind the partition, a retaining spring 504 is also provided to limit the axial movement of the threaded screw 502 relative to the expanded hole end 503 behind the partition; the end of the reduced shaft end 501 in front of the partition A semicircular groove is provided, which can be assembled and connected with a nail magazine 2; the front retracted shaft end 501 of the partition and the rear reamed end 503 of the partition are on the same straight line, and the rear reamed end 503 of the partition is open to one side of the front retracted shaft end 501 of the partition, forming a cavity that can accommodate the front retracted shaft end 501 of the partition, and the relative distance between the front retracted shaft end 501 of the partition and the rear reamed end 503 of the partition can be adjusted by turning the dial 508 to drive the rotation of the threaded screw 502, thereby realizing fine adjustment of the distance between the nail magazine 2 and the nail support frame 1; the rear end of the rear reamed end 503 of the partition is also rotatably connected to the driven hinge connecting rod 510, and the driven hinge connecting rod 510 is further rotatably connected to the active hinge crank 509, and the active hinge crank 509 is further rotatably connected to the nail support frame 1 through the rear shaft 5091 of the active hinge crank. At the position of the nail pushing piece 4, multiple layers are symmetrically stacked in sequence from the inside to the outside, specifically: the nail pushing piece 4 is in the center, and outward are the push rod 101, the expanded hole end 503 at the rear of the partition / the retracted shaft end 501 at the front of the partition, and the nail support skeleton 1, wherein the nail pushing piece 4 and the push rod 101 extend into the interior of the nail magazine 2, respectively abutting the suture nail 3 and the positioning needle 201 (respectively used to push out the suture nail 3 and the positioning needle 201), the retracted shaft end 501 in front of the partition is integrally assembled and connected to the nail magazine 2 (used to push and pull the nail magazine 2 to fine-tune the distance between the nail magazine 2 and the nail support skeleton 1), and the nail support skeleton 1 extends to the front of the output face of the nail magazine 2 (used to cooperate with the nail magazine 2 to form a gap for clamping the tissue to be sutured).

[0128] Reference Figure 7 , Fig. 9, rotating the dial 508 can drive the large gear 507 to rotate, the large gear 507 rotates to drive the small gear 505 meshing with it to rotate, the small gear 505 drives the threaded screw 502 to rotate, and the front and rear movement of the contraction shaft end 501 of the partition can be realized, thereby slightly changing the front and rear position of the nail magazine 2, and finally changing the clamping thickness. The advantage of using the thickness adjustment component 5 is that the front and rear position of the contraction shaft end 501 of the partition can be adjusted by turning the dial 508, thereby changing the clamping thickness of the tissue.

[0129] In addition to adjusting the clamping distance by the thickness adjustment component 5 (usually as a pre-adjustment of the spacing), the clamping distance can also be adjusted (clamping adjustment during operation) by the transmission of the thickness adjustment component 5 (driven hinge connecting rod 510 and active hinge crank 509) by the continuous force component 9. The adjustment is specifically as follows: by moving the continuous force component 9 (the rear end of the ratchet 914 is upward (such as Fig.18 The active hinge crank 509 is rotated counterclockwise (the direction shown is counterclockwise), which resists and drives the active hinge crank 509 to rotate around the rear axis 5091 of the active hinge crank, thereby driving the driven hinge connecting rod 510 to move to the same straight line as the active hinge crank 509 (at this time, the distance is the longest after being fully straightened), thereby pushing the thickness adjustment component 5 to move forward as a whole, and finally driving the staple cartridge 2 to clamp the tissue to be sutured.

[0130] See also Figure 1 , Figure 11-14The continuous force component 9 includes a claw 909, a claw fixing rod 905, a claw reset torsion spring 907, a connecting rod 906, a connecting rod reset torsion spring 904, a movable handle 901, a ratchet 914, a connecting rod 910, a ratchet fixing piece 911, a connecting rod fixing piece 908, a ratchet connecting screw 912, a left ratchet compression spring 913, a right ratchet compression spring 903, and a ratchet connecting nut 902. The claw 909 is rotatably connected to the movable handle 901 through the claw fixing rod 905; the claw reset torsion spring 907 is sleeved on the claw fixing rod 905, and one end of it is installed on the movable handle 901, and the other end (movable end) is pressed against the claw 909; the connecting rod 906 is also rotatably connected to the movable handle 901 through the claw fixing rod 905, and the connecting rod reset torsion spring 904 is also sleeved on the claw fixing rod 905, and one end of it is installed on the movable handle 901, and the other end (movable end) is pressed against the connecting rod 906; one end of the connecting rod 910 is rotatably connected to the connecting rod 906 through the connecting rod fixing piece 908, and the other end of the connecting rod 910 is rotatably connected to the ratchet 914 through the ratchet fixing piece 911; the ratchet 914 is provided with ratchet teeth, which mesh with the claw 909 when they abut against each other; the ratchet 914 can be rotated by the ratchet connecting screw 912 The rotating connection is installed on the nail support frame 1, and the end (free end) of the ratchet connecting screw 912 is threadedly connected to the ratchet connecting nut 902, and a left ratchet compression spring 913 is sleeved between the head end of the ratchet connecting screw 912 and the ratchet 914, and a right ratchet compression spring 903 is sleeved between the ratchet connecting nut 902 and the ratchet 914, so that the left ratchet compression spring 913 and the right ratchet compression spring 903 jointly compress the ratchet 914 inward (toward the center), thereby achieving lateral positioning of the ratchet 914; at the same time, the left ratchet compression spring 913 and the right ratchet compression spring 903 will synchronously undergo a slight deformation under the action of friction when the ratchet 914 rotates. Therefore, after releasing the ratchet 914, the left ratchet compression spring 913 and the right ratchet compression spring 903 can also assist the ratchet 914 to reset and rotate.

[0131] See also Fig.15 , Fig.16, pull the movable handle 901 backward to make it rotate counterclockwise around the claw fixing rod 905, thereby pushing the connecting rod 910 to move through the connecting rod 906, and then driving the ratchet 914 to rotate counterclockwise around the ratchet connecting screw 912 for a certain angle. At this time, the claw 909, under the action of the claw reset torsion spring 907, tightly presses against the ratchet teeth of the ratchet 914 to prevent the ratchet 914 from rotating in the opposite direction; pulling the movable handle 901 again can drive the ratchet 914 to continue to rotate counterclockwise by the same angle, and so on and so forth. Through multiple small pulling processes, the purpose of continuously driving the ratchet 914 to rotate counterclockwise continuously by repeatedly pulling the movable handle 901 is finally achieved, wherein the automatic anti-reversal structure design formed between the claw 909 and the ratchet 914 does not require the doctor to press continuously, and the pulling of the movable handle 901 can be temporarily stopped during this period and then continued. If the movable handle 901 is pulled forward to rotate clockwise, the claw reset torsion spring 907 is released and the claw 909 rotates until it no longer abuts against the ratchet teeth of the ratchet wheel 914, and the ratchet wheel 914 rotates back to the initial position.

[0132] The advantage of using the continuous force-applying component 9 is that repeatedly pulling the movable handle 901 intermittently drives the ratchet 914 to rotate, thereby providing continuous force for clamping the tissue to be sutured, and ultimately achieving a large clamping force using a small hand grip force (single) without the doctor having to continuously press the stapler.

[0133] See also Fig.16 One end of the nail pushing piece connecting rod 7 is movably connected to the ratchet 914, and the connection position between the nail pushing piece connecting rod 7 and the ratchet 914 and the connection position between the connecting rod 910 and the ratchet 914 are on both sides of the connection position between the ratchet connecting screw 912 and the ratchet 914, and then when the ratchet 914 is pushed by the connecting rod 910 to rotate counterclockwise, the nail pushing piece connecting rod 7 can push the nail pushing piece 4 forward; the other end (free end) of the nail pushing piece connecting rod 7 is set toward the nail pushing piece 4, and its position is different according to different states, specifically: in the unactivated state, the free end of the nail pushing piece connecting rod 7 is located below the nail pushing piece 4, and cannot push the nail pushing piece 4 forward; in the activated state, the free end of the nail pushing piece connecting rod 7 is against the notch at the rear end of the nail pushing piece 4, and then the nail pushing piece 4 can be pushed forward under the movement of the nail pushing piece connecting rod 7. The nail pushing torsion spring 8 is sleeved on the connecting shaft for connecting the nail pushing piece connecting rod 7 and the ratchet 914, and the nail pushing torsion spring 8 is located outside the ratchet 914, one end of which is connected to the ratchet 914, and the other end is pressed against the nail pushing piece connecting rod 7.

[0134] See also Fig.17The working principle of the nail pusher link 7 is as follows: when the state is not activated, the nail pusher 4 is at the initial position at the rear (at this time, there is an angle between the driven hinge link 510 and the active hinge crank 509, and it is not fully straightened). The nail pusher link 7 cannot resist the rear of the nail pusher 4, but can only be located below the nail pusher 4. At this time, even if the movable handle 901 is pulled, the nail pusher 4 cannot be pushed forward, and the nail pusher link 7 can only slide relative to the nail pusher 4 by friction. Fig.18 When the thickness adjustment component 5 (driven hinge connecting rod 510 and active hinge crank 509) enters the excited state, the nail pushing piece 4 is pushed to the front position by the fully extended driven hinge connecting rod 510 and the active hinge crank 509, and the movable handle 901 is pulled forward. The elastic force accumulated in the process of the nail pushing torsion spring 8 from the unexcited state to the excited state in the early stage will be released under the drive of the rotation of the ratchet 914, and then the nail pushing piece connecting rod 7 will be pushed up under the action of the elastic force, and the nail pushing piece connecting rod 7 will be pressed against the rear end recess of the nail pushing piece 4. The movable handle 901 is reciprocated again, and the counterclockwise rotation of the ratchet 914 will drive the nail pushing piece connecting rod 7 to move and then drive the nail pushing piece 4 to move forward and press against the suture nail 3 in the nail magazine 2. Finally, the suture nail 3 pierces the clamped tissue to be sutured and sutures the tissue.

[0135] See also Figure 18-21 The reset assembly 11 includes a reset button 111, a reset rod 112, a reset spring 113, a left reset sheet 115, and a right reset sheet 114. The reset button 111 is movably connected to the rear of the nail support frame 1 through the rear shaft 5091 of the active hinge crank; the reset rod 112 is located below the reset button 111 and its rear end is against the lower wall of the reset button 111. The reset rod 112 is also movably connected to the inside of the shell 6. The reset rod 112 is a T-shaped structure, and its lower end is arranged toward (can be against) the active hinge crank 509 (close to the position where the active hinge crank 509 is connected to the driven hinge connecting rod 510), so that pressing down the reset button 111 can synchronously press down the reset rod 112 to make the active hinge crank 509 and the driven hinge connecting rod 510 connected. The hinge connecting rod 510 can be restored from a straight line state to a broken line state, that is, exit the excited state; the left reset plate 115 and the right reset plate 114 are located on both sides of the reset pressure rod 112 (and the active hinge crank 509), and are respectively movably connected to the anvil frame 1 (a hemispherical groove is provided on the anvil frame 1, and the left reset plate 115 and the right reset plate 114 are assembled in the hemispherical groove and can rotate), and a reset spring 113 is hung on the front of the left reset plate 115 and the right reset plate 114, and the front end of the reset spring 113 is hooked on the rear position of the anvil frame 1.

[0136] The reset button 111 is pressed to push the reset rod 112 in contact with it downward, and then the reset rod 112 presses down the active hinge crank 509 and drives the driven hinge connecting rod 510, thereby pulling the other components of the thickness adjustment assembly 5 and driving the nail magazine 2 to move backward, and finally realizing the reset of the thickness adjustment assembly 5; at this time, the left reset plate 115 and the right reset plate 114 are pressed down by the reset button 111 at the same time, and the reset spring 113 is stretched at the same time. Fig. 20 One end of the reset spring 113 is hooked on the nail support frame 1, and the other end is hooked on the left reset plate 115 / right reset plate 114. Therefore, after the reset assembly 11 completes the reset of the stapler and removes the downward pressure applied to the reset twist 111, under the action of the reset spring 113, the reset twist 111 rebounds and resets under the rebound drive of the left reset plate 115 and the right reset plate 114.

[0137] See also Fig.23 , Fig.24 The front end of the housing 6 is provided with an elliptical opening 6003, which reserves space for the dial 508 to extend out of the housing 6; the rear of the housing 6 is a fixed handle 6001, which cooperates with the movable handle 901 to facilitate the doctor to hold the stapler and turn the movable handle 901; the rear end surface of the fixed handle 6001 (the contact surface with the hand when holding) is provided with anti-slip stripes 6002 to increase friction and improve the stability of hand operation. Fig.25 The dial 508 also has a digital scale mark 5081, which is convenient for pre-adjusting the thickness adjustment component 5 when clamping the tissue to be sutured. Fig.26 The front end surface of the movable handle 901 (the contact surface with the hand when holding) has an anti-slip leather texture 9011, which can increase friction and improve the stability of hand operation.

[0138] The specific method of using the stapler is as follows:

[0139] 1. Remove the nail magazine 2, turn the head of the nail magazine 2 upward (at this time, the surface with the suture nails 3 faces forward and is opposite to the front end of the nail support frame 1) and adjust the positions of the left and right positioning buttons. Then, clamp the two protruding cylindrical structures on the left and right outer walls of the nail magazine 2 in the semicircular grooves opened at the retracted shaft end 501 in front of the partition, and make the push rod 101 in the positioning assembly 10 and the front end of the nail push piece 4 inside it embed into the nail magazine 2 to complete the assembly of the nail magazine 2.

[0140] 2. Adjust the dial 508 above the housing 6 to pre-adjust the clamping thickness (the distance between the front end surface (output surface) of the nail magazine 2 and the nail support frame 1).

[0141] 3. Clamp the tissue to be sutured between the staple cartridge 2 and the staple support frame 1, repeatedly pull the movable handle 901 to fully extend the thickness adjustment component 4 to clamp the tissue to be sutured, push the positioning component 10 forward to extend the positioning needle 201 to position the tissue to be sutured, and the positioning component 10 simultaneously drives the staple pusher 4 forward, then pull the movable handle 901 back forward to make the staple pusher connecting rod 7 bounce up, until a "click" sound is heard, indicating that the stapler has entered the activated state.

[0142] 4. Press the movable handle 901 again and again, and under the common transmission of all components, the staple pusher 4 pushes the suture staple 3 out of the staple cartridge 2 and into the tissue to be sutured, and the suture staple 3 in the staple cartridge 2 pierces the human tissue and sutures the tissue.

[0143] 5. Press the reset button 111. Under the transmission of various components, the stapler automatically resets and retracts the positioning needle 201 and the stapler cartridge 2, releasing the tissue to be sutured.

[0144] 6. Remove the stapler and complete the operation.

[0145] During operation, the specific movements of each component are as follows:

[0146] First, when the stapler is not activated (the active hinge crank 509 and the driven hinge connecting rod 510 are broken lines), adjust the thickness adjustment component 5: according to the thickness of the tissue to be sutured and the digital scale mark 5081, turn the dial 508 to adjust the relative distance between the front end of the partition 501 and the rear end of the partition 503, so as to change the clamping distance between the front end surface of the staple cartridge 2 and the front end of the staple support frame 1;

[0147] Then, the stapler is adjusted from the unactivated state to the activated state (the active hinge crank 509 and the driven hinge connecting rod 510 are in a straight line): by repeatedly pulling the movable handle 901, the movable handle 901 rotates counterclockwise around the claw fixing rod 905 to push the connecting rod 906 upward and then push the connecting rod 910 upward, and the ratchet 914, under the push of the connecting rod 910, intermittently moves counterclockwise around the ratchet connecting screw 912, so that the rear end of the ratchet 914 pushes the active hinge crank 509 to rotate clockwise around the rear axis 5091 of the active hinge crank until the active hinge crank 509 and the driven hinge connecting rod 510 are in a straight line; at this time, the stapler enters the activated state, the staple cartridge 2 is pushed to the farthest end and clamps the tissue to be sutured together with the front end of the stapler frame 1;

[0148] Then, the positioning needle 201 is pushed out to position the tissue to be sutured: by pushing the left positioning push knob 103 and / or the right positioning push knob 104 forward, the push rod 101 is driven forward to push the positioning needle 201 out of the staple cartridge 2 and inserted into the tissue to be sutured for positioning, and at the same time, the staple pusher 4 moves forward following the push rod 101;

[0149] The suture nail 3 is then pushed out to sew the tissue to be sutured: by pulling the movable handle 901 forward (clockwise around the clamping claw fixing rod 905), the elastic force of the clamping claw reset torsion spring 907 and the linkage rod reset torsion spring 904 is released, and the pressure applied to the clamping claw 909 and the linkage rod 906 is removed to release the lock on the ratchet 914 so that the ratchet 914 can be quickly reset, and then, the nail pushing torsion spring 8 releases the elastic force to push the nail pushing piece connecting rod 7 to bounce up, so that the free end of the nail pushing piece connecting rod 7 abuts against the rear end notch of the nail pushing piece 4; the movable handle 901 is repeatedly pulled forward (clockwise around the clamping claw fixing rod 905), the elastic force of the clamping claw reset torsion spring 907 and the linkage rod reset torsion spring 904 are released, and the pressure applied to the clamping claw 909 and the linkage rod 906 is removed to release the lock on the ratchet 914 so that the ratchet 914 can be quickly reset, and then, the nail pushing torsion spring 8 releases the elastic force to push the nail pushing piece connecting rod 7 to bounce up, so that the free end of the nail pushing piece connecting rod 7 abuts against the rear end notch of the nail pushing piece 4 The movable handle 901 rotates counterclockwise around the claw fixing rod 905, and drives the ratchet 914 to rotate counterclockwise intermittently by pushing the connecting rod 906 and the upper top of the connecting rod 910. The front end of the ratchet 914 moves forward during the rotation, and at the same time drives the nail pushing piece connecting rod 7 connected to the front end of the ratchet 914 to push forward, and then the nail pushing piece connecting rod 7 pushes the nail pushing piece 4 forward from the rear end of the nail pushing piece 4, so that the nail pushing piece 4 pushes the suture nail 3 in the nail magazine 2 out from the front end surface, so as to achieve suturing on the tissue to be sutured;

[0150] Finally, the stapler is reset: the movable handle 901 is pulled forward (clockwise around the claw fixing rod 905) to reset the ratchet 914 and the nail pushing piece connecting rod 7. After the pressure of the nail pushing piece connecting rod 7 is lost, the nail pushing piece 4 is reset under the elastic force of the spring connected to the rear end of the nail pushing piece 4; then the left positioning push knob 103 and / or the right positioning push knob 104 are pulled back backward to release the pressure applied to the positioning needle 201. Under the elastic force of the positioning needle reset spring 202, the positioning needle 201 is retracted into the staple cartridge 2 and the positioning of the tissue to be sutured is released; then the reset knob 111 is pressed to press the reset pressure rod 112 and the left reset plate 115 and the right reset plate 114, and the reset pressure rod 112 further presses down the active hinge crank 509 causes the active hinge crank 509 to rotate counterclockwise around the rear axis 5091 of the active hinge crank, and then the active hinge crank 509 pulls back the driven hinge connecting rod 510 to restore the active hinge crank 509 and the driven hinge connecting rod 510 to the folded line state, and the driven hinge connecting rod 510 further pulls back the thickness adjustment component 5 and the stapler 2, so that all components except the reset component 11 in the stapler are reset, and at the same time, the left reset plate 115 and the right reset plate 114 are pressed down and the reset spring 113 is stretched; finally, the pressure applied to the reset twist 111 is released, and the reset spring 113 pulls back to push up the left reset plate 115 and the right reset plate 114 and prompt the reset pressure rod 112 and the reset twist 111 to reset, and now the stapler is completely reset.

[0151] In summary, the present invention adopts a thickness adjustment component 5 to change the tissue clamping thickness to meet the surgical requirements when suturing tissues of different thicknesses; and adopts a continuous force component 9 to reduce the hand force intensity of medical staff and the fatigue of long-term holding.

[0152] The above description of the embodiments is to facilitate the understanding and use of the invention by those skilled in the art. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the present invention is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the scope of protection of the present invention.

Claims

1. A continuous force-applying stapler with adjustable clamping thickness, characterized in that: It comprises a nail support frame (1), a nail magazine (2), a nail pushing plate (4), a thickness adjustment component (5), a continuous force application component (9) and a reset component (11); The staple cartridge (2) is loaded with suture staples (3), and the output surface of the staple cartridge (2) is arranged opposite to the front end of the staple support frame (1); The front end of the nail pushing piece (4) extends into the interior of the nail magazine (2) and abuts against the suture nail (3), and the rear end of the nail pushing piece (4) is movably connected to the nail abutment frame (1). The nail pushing piece (4) is used to push the suture nail (3) out of the nail magazine (2) from the output surface; The thickness adjustment component (5) comprises a retracted shaft end (501) in front of the partition, a threaded screw (502), an expanded hole end (503) in the rear of the partition, a dial (508), an active hinge crank (509) and a driven hinge connecting rod (510), and the thickness adjustment component (5) is used to adjust the clamping distance between the output surface of the nail magazine (2) and the nail support frame (1); The dial (508) is arranged to be driven by a gear set and a threaded lead screw (502); The threaded lead screw (502) is threadedly connected to the contracted end (501) at the front of the partition, and the threaded lead screw (502) is rotatably connected to the expanded end (503) at the rear of the partition; The front retracted shaft end (501) of the partition is connected to the nail magazine (2); The rear reaming end (503) of the partition is rotatably connected to the driven hinge connecting rod (510); The front shrinking end (501) of the partition and the rear expanding end (503) of the partition are located on the same straight line, and the rear expanding end (503) of the partition is provided with an opening for accommodating the front shrinking end (501) of the partition on the side facing the front shrinking end (501) of the partition; The driven hinge connecting rod (510) is rotationally connected to the driving hinge crank (509); The active hinge crank (509) is rotatably connected to the anvil frame (1); The continuous force-applying component (9) is arranged to be driven by the nail-pushing piece connecting rod (7) and the nail-pushing piece (4). The continuous force-applying component (9) comprises a movable handle (901), a connecting rod (906), a claw reset torsion spring (907), a claw (909) and a ratchet (914). The continuous force-applying component (9) is used to push the nail-pushing piece (4) to move toward the nail magazine (2). The ratchet wheel (914) is rotatably connected to the nail support frame (1) and the nail pusher connecting rod (7), and ratchet teeth are also arranged on the ratchet wheel (914), and the ratchet teeth are meshed with the pawl (909); The connecting rod (906) is arranged to be driven by the connecting rod (910) and the ratchet wheel (914); The linkage rod (906) and the claw (909) are rotatably connected to the movable handle (901) via the claw fixing rod (905); The claw reset torsion spring (907) is sleeved on the claw fixing rod (905), the fixed end of the claw reset torsion spring (907) is assembled on the movable handle (901), and the movable end of the claw reset torsion spring (907) is pressed toward the claw (909); The resetting component (11) is movably connected to the rear end of the anvil frame (1), and is used for resetting the stapler.

2. The continuous force-added stapler with adjustable clamping thickness according to claim 1, characterized in that: The thickness adjustment component (5) further comprises a retaining spring (504), wherein the retaining spring (504) is sleeved on the threaded screw (502), and a side surface of the retaining spring (504) abuts against an outer wall surface of the rear expansion hole end (503) of the partition.

3. The continuous force-added stapler with adjustable clamping thickness according to claim 1, characterized in that: The continuous force-applying component (9) further comprises a linkage rod reset torsion spring (904) sleeved on the claw fixing rod (905); the fixed end of the linkage rod reset torsion spring (904) is assembled on the movable handle (901), and the movable end of the linkage rod reset torsion spring (904) is pressed toward the linkage rod (906).

4. The continuous force-applying stapler with adjustable clamping thickness according to claim 1, characterized in that: The ratchet (914) is rotatably connected to the anvil frame (1) via a ratchet connecting screw (912); the ratchet connecting screw (912) is arranged through the ratchet (914) and is connected to the ratchet connecting nut (902) at the end; a left ratchet compression spring (913) is sleeved between the ratchet connecting screw (912) and the ratchet (914); a right ratchet compression spring (903) is sleeved between the ratchet connecting nut (902) and the ratchet (914); the left ratchet compression spring (913) and the right ratchet compression spring (903) are used to press the ratchet (914).

5. The continuous force-applying stapler with adjustable clamping thickness according to claim 1, characterized in that: The reset assembly (11) comprises a reset twist (111), a reset pressure rod (112), a reset spring (113), a right reset plate (114) and a left reset plate (115); The reset twist (111) is rotatably connected to the rear end of the nail support frame (1), and the reset twist (111) is arranged to be driven by the reset pressure rod (112) and the active hinge crank (509); The right reset plate (114) and the left reset plate (115) are movably connected to the anvil frame (1), and the right reset plate (114) and the left reset plate (115) are respectively located on both sides of the reset pressure rod (112); The right reset plate (114) and the left reset plate (115) are also connected to the anvil frame (1) via a reset spring (113).

6. The continuous force-applying stapler with adjustable clamping thickness according to claim 1, characterized in that: The stapler further comprises a stapler-pushing torsion spring (8), one end of which is connected to the ratchet wheel (914), and the other end of which is pressed toward the stapler-pushing connecting rod (7).

7. The continuous force-applying stapler with adjustable clamping thickness according to claim 1, characterized in that: The stapler further comprises a positioning assembly (10), wherein the positioning assembly (10) comprises a push rod (101), a slot (102), a left positioning push knob (103) and a right positioning push knob (104); A positioning pin (201) is also provided inside the nail magazine (2); The front end of the push rod (101) extends into the interior of the nail magazine (2) and abuts against the positioning pin (201), a U-shaped groove is provided in the middle of the push rod (101), and an axisymmetric short pin is provided at the rear end of the push rod (101); the push rod (101) is arranged between the front retracted end (501) of the partition and the nail pushing plate (4), and the push rod (101) is connected to the nail pushing plate (4); The clamping slot (102) is rotatably connected to the anvil frame (1), and a push shaft is provided on the clamping slot (102), and the push shaft is embedded in the U-shaped slot; The left positioning push knob (103) and the right positioning push knob (104) are respectively connected to the short pins on both sides of the push rod (101); The positioning assembly (10) is used to push the positioning needle (201) out of the nail magazine (2) from the output surface.

8. The continuous force-applying stapler with adjustable clamping thickness according to claim 7, characterized in that: The positioning needle (201) is also sleeved with a positioning needle return spring (202).

9. The continuous force-applying stapler with adjustable clamping thickness according to claim 1, characterized in that: The stapler further comprises a housing (6); The shell (6) is coated on the rear part of the nail support frame (1), so that the thickness adjustment component (5), the continuous force component (9) and the reset component (11) are located in the coating area of ​​the shell (6); The housing (6) is movably connected to the reset assembly (11); The rear end of the housing (6) is provided as a fixed handle (6001).

10. A method for using the continuous force-applying stapler with adjustable clamping thickness as claimed in any one of claims 1 to 9, characterized in that: The steps include: When the stapler is not activated, there is an angle between the driven hinge connecting rod (510) and the active hinge crank (509), and the nail pushing plate connecting rod (7) is located below the nail pushing plate (4); By turning the dial (508) to pre-adjust the clamping distance between the staple cartridge (2) and the staple support frame (1), the movable handle (901) is repeatedly turned to push the active hinge crank (509) through the ratchet (914), so that the driven hinge connecting rod (510) and the active hinge crank (509) are located on the same straight line, and the ratchet (914) is locked with the help of the claw (909). At the same time, the stapler pusher (4) moves forward and the stapler enters the activated state; The movable handle (901) is pulled back to reset the movable handle (901), and the locking of the claw (909) on the ratchet (914) is released by the restoring force of the claw reset torsion spring (907), so that the nail pushing piece connecting rod (7) moves to the rear end of the nail pushing piece (4); The movable handle (901) is repeatedly pulled again to drive the ratchet wheel (914) to rotate, so that the nail-pushing piece connecting rod (7) pushes the nail-pushing piece (4), and the nail-pushing piece (4) pushes the suture nail (3) out of the nail magazine (2); The resetting component (11) is pressed to reset each moving component in the stapler.

Images