A surgical laparoscopic suturing instrument

Abstract

The present invention provides a surgical laparoscopic suturing instrument for use in the field of laparoscopy, comprising a multifunctional handle and a suturing head, wherein operating power is transmitted between the multifunctional handle and the suturing head through a transmission rod, the suturing head comprising an upper clamp body and a lower clamp body, the upper clamp body and the lower clamp body being arranged relative to each other and rotatably connected, and a suturing body being detachably connected to the lower clamp body; two groups of symmetrically arranged suture needle groups are provided on the side of the suturing body opposite to the upper clamp body, each group of suture needle groups comprises a plurality of needle grooves which are equidistant and adjacently staggered, and suture titanium nails are provided in the needle grooves, an anvil is fixed on the side of the upper clamp body opposite to the lower clamp body, and a curved nail groove which matches the suture titanium nails is provided on the anvil; the present invention reduces the pusher structure of the multifunctional handle by improving the suture titanium nails and the cutting mechanism, improves the anti-slip property and safety of the suture titanium nails, can effectively improve the suturing efficiency and operational safety in abdominal surgery, has market prospects, and is suitable for popularization and application.

Description

Technical Field

[0001] The present application relates to the field of laparoscopy, and in particular to a surgical laparoscopic suturing instrument. Background Art

[0002] With the continuous advancement of modern medical technology, laparoscopic surgery, as a minimally invasive surgical method, has been widely used and rapidly developed in the field of surgery. It has significant advantages such as less trauma, less pain, faster recovery, and shorter hospitalization time, bringing patients a better treatment experience and rehabilitation effect.

[0003] In the field of laparoscopic surgery, the use of anastomotic staplers has been widely used to replace traditional needle and thread suturing. It provides a relatively fast and convenient method for suturing and connecting tissues during surgery and plays a key role in many laparoscopic surgeries, such as gastrointestinal surgery, hepatobiliary surgery, and urological surgery.

[0004] However, the suturing and cutting steps of existing anastomotic staplers need to be performed separately, and the operator's preparation and installation process are relatively complicated, which reduces the efficiency of surgical abdominal surgery. Therefore, a surgical laparoscopic suturing instrument is proposed. Summary of the Invention

[0005] The present application aims to solve the technical problems of poor preoperative installation convenience and low surgical efficiency of existing anastomotic staplers. Compared with the existing technology, a surgical laparoscopic suturing instrument is provided, which includes a multifunctional handle and a suturing head. The multifunctional handle and the suturing head are used to transmit operating power through a transmission rod. The suturing head includes an upper clamp body and a lower clamp body, which are arranged relative to each other and rotatably connected. The lower clamp body is detachably connected to a suturing body.

[0006] Two symmetrically arranged suture needle groups are provided on the side of the suture main body opposite to the upper clamp body, each group of suture needle groups includes a plurality of needle grooves that are equidistant and adjacently staggered, and suture titanium nails are provided in the needle grooves. An anvil is fixed on the side of the upper clamp body opposite to the lower clamp body, and the anvil is provided with a curved nail groove that matches the suture titanium nails;

[0007] A mounting strip is fixed to the side of the suturing body opposite to the lower clamp body, and a plurality of unidirectional wedge blocks are arranged at equal intervals on both sides of the mounting strip of the suturing body. A mounting groove corresponding to the suturing body is provided on the side of the lower clamp body opposite to the upper clamp body, and a dovetail groove is provided in the mounting groove to match the mounting strip and a locking groove to match the unidirectional wedge block.

[0008] The suturing body is further provided with a cutting mechanism between the two groups of suture needle groups, and a driving mechanism for driving the cutting mechanism to move upward and close to the upper clamp body is provided in the suturing body.

[0009] Furthermore, one end of the suture body is further provided with a guide head, and both the suture body and the guide head are made of medical flexible silicone structures. The cutting mechanism includes a knife strip, and a receiving groove for receiving the knife strip is provided in the suture body. Arc-shaped elastic plates are symmetrically fixed on both sides of the knife strip. The end of the arc-shaped elastic plate away from the knife strip extends through the suture body and is fixed with the one-way wedge block.

[0010] Several one-way wedge blocks are evenly and equidistantly arranged on the arc-shaped elastic plate. The number of the locking grooves matches the number of the one-way wedge blocks. The one-way wedge blocks have the one-way guide property of preventing the suture body from moving away from the lower clamp body.

[0011] Furthermore, the length of the titanium suture nails in the two groups of suture needle groups gradually increases in the direction away from the cutting mechanism, and the titanium suture nails are in a gate-shaped structure. Both ends of the titanium suture nails are provided with matching bevels, and the two groups of matching bevels are arranged in the same direction. The two groups of matching bevels are respectively provided with matching male grooves and matching female grooves;

[0012] Two groups of guide grooves are arranged in the bent nail groove, the depths of the two groups of guide grooves are different, and a convex point is arranged between the two groups of guide grooves.

[0013] Furthermore, the driving mechanism includes a driving bar arranged in the suturing body, two groups of driving bars are symmetrically arranged on both sides of the cutting mechanism, the top of the driving bar is provided with multiple groups of support seats for supporting the suturing titanium nails, a flip bar is fixed to one side of the bottom of the driving bar, the flip bar extends to one side of the outer wall of the suturing body, and a flip groove corresponding to the flip bar is provided in the assembly groove of the lower clamp body;

[0014] An extrusion strip is further provided at the bottom of the driving strip.

[0015] Furthermore, a plurality of equally spaced drug supply holes are provided on both sides of the top of the knife strip, a drug guide channel is provided at the bottom of the knife strip and is connected to the drug supply holes, and a drug delivery mechanism is further provided in the suture body, the drug delivery mechanism includes a second air cavity and a drug cavity, the drug cavity is connected to the drug guide channel, and the drug cavity is filled with anti-adhesion drugs;

[0016] Two groups of first air cavities are symmetrically provided at the bottom of the suture body, and the first air cavities are both connected to the second air cavities.

[0017] Furthermore, the bottom of the first air cavity is in the shape of an inclined surface, a sealing film corresponding to the knife strip is fixed to the top of the suture body, and the end section of the one-way wedge block is in the shape of a semicircle.

[0018] Furthermore, the arc-shaped elastic plate has an elastic force that drives the blade to move downward close to the medicine cavity.

[0019] Furthermore, two groups of symmetrically arranged material return grooves are provided in the assembly groove of the lower clamp body. The material return grooves are arranged on the top of the locking groove, and a guide groove is provided on one side of the locking groove close to the material return groove.

[0020] Furthermore, the cross-section of one side of the suturing body close to the upper clamp body is arranged in an arc shape, the cross-section of the assembly strip is in a dovetail shape, and the cross-section of the end of the flip strip is in a semicircular shape.

[0021] Furthermore, the hardness of the suture body at the top portion of the first air cavity slope is smaller than the hardness of the suture body at the bottom portion of the first air cavity slope.

[0022] Compared with the existing technology, the advantages of this application are:

[0023] The present invention reduces the pusher structure of the multifunctional handle by improving the titanium suture nail and cutting mechanism, improves the anti-slip property and safety of the titanium suture nail, can effectively improve the suturing efficiency and operational safety in abdominal surgery, has market prospects, and is suitable for promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of this application;

[0025] Figure 2 This is a schematic diagram comparing the opening and closing states of the suture head proposed in this application;

[0026] Figure 3 This is a schematic diagram of the structure of the suture head proposed in this application;

[0027] Figure 4 A schematic diagram of the exploded structure of the suture head proposed in this application;

[0028] Figure 5 This is a schematic diagram of the internal structure of the lower clamp body proposed in this application;

[0029] Figure 6 for Figure 5 A schematic diagram of the enlarged structure of the middle part A;

[0030] Figure 7 This is a schematic diagram of the bottom structure of the suture body proposed in this application;

[0031] Figure 8 This is a schematic diagram of the top structure of the suture body proposed in this application;

[0032] Figure 9 for Figure 8 A schematic diagram of the enlarged structure of the middle part B;

[0033] Figure 10 This is a schematic diagram of the structure of the titanium suture nail proposed in this application;

[0034] Figure 11 Schematic diagram of the cross-sectional structure of the needle groove and the bent nail groove proposed in this application;

[0035] Figure 12 This is a schematic diagram of the bending state change of the titanium suture nail proposed in this application;

[0036] Figure 13 This is a schematic diagram of the internal structure of the suture body proposed in this application;

[0037] Figure 14 This is a schematic diagram of the exploded structure of the suture body proposed in this application;

[0038] Figure 15 This is a schematic diagram of the cross-sectional structure of the suture body proposed in this application;

[0039] Figure 16 This is a schematic structural diagram of the cutting mechanism proposed in this application;

[0040] Figure 17 A schematic structural diagram of the drive bar proposed in this application;

[0041] Figure 18 Schematic diagram of the cross-sectional structure of the upper and lower clamp bodies proposed in this application;

[0042] Figure 19 This is a schematic diagram of the internal changes of the suture body when the upper clamp body and the lower clamp body proposed in this application are engaged;

[0043] Figure 20 This is a schematic diagram of the driving bar flipping proposed in this application to drive the change in the suturing angle of the titanium suture staples.

[0044] Description of the numbers in the figure:

[0045] 1. Multi-function handle; 2. Transmission rod;

[0046] 3. Suture head; 31. Upper clamp body; 32. Lower clamp body; 321. Turning groove; 322. Material return groove; 323. Locking groove; 3231. Guide groove; 324. Dovetail groove;

[0047] 4. Suture body; 41. Needle slot; 42. Assembly strip; 43. Guide head; 44. Storage slot; 441. Sealing film; 45. First air cavity; 46. Dosing mechanism; 461. Second air cavity; 462. Drug cavity;

[0048] 5. Anvil; 51. Bending nail groove; 511. Guide groove; 512. Protrusion;

[0049] 6. Cutting mechanism; 61. Arc-shaped elastic plate; 611. One-way wedge block; 62. Blade; 621. Drug guide channel; 622. Drug supply hole

[0050] 7. Driving bar; 71. Turning bar; 72. Support seat; 73. Extrusion bar; 8. Suture titanium nail; 81. Apposition bevel;

[0051] 82. Match the male groove; 83. Match the female groove. DETAILED DESCRIPTION

[0052] The embodiments will be combined with the drawings in the specification to clearly and completely describe the technical solution of this application. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making any creative work shall fall within the scope of protection of this application.

[0053] Example:

[0054] The present invention provides a surgical laparoscopic suturing instrument, see Figure 1 - Figure 20 , including a multifunctional handle 1 and a suturing head 3, the multifunctional handle 1 and the suturing head 3 are operated by a transmission rod 2 for power transmission, the suturing head 3 includes an upper clamp body 31 and a lower clamp body 32, the upper clamp body 31 and the lower clamp body 32 are relatively arranged and rotatably connected, and are used to clamp the patient's part to be cut and sutured. In order to make the suturing head 3 as a whole able to be fully disinfected and recycled, the lower clamp body 32 is detachably connected to the suturing body 4, which is a disposable component and can be easily installed on the lower clamp body 32 to reduce the cost of use;

[0055] For details, please refer to Figure 5 - Figure 7 , a mounting strip 42 is fixed to the side of the suture body 4 opposite to the lower clamp body 32, and a plurality of unidirectional wedge blocks 611 are arranged at equal distances on both sides of the suture body 4. A mounting groove corresponding to the suture body 4 is provided on the side opposite to the upper clamp body 31 of the lower clamp body 32, and a dovetail groove 324 matching the mounting strip 42 and a locking groove 323 matching the unidirectional wedge block 611 are provided in the mounting groove. In order to improve the anti-slip performance of the dovetail groove 324 and the mounting strip 42, the cross-section of the mounting strip 42 is dovetail-shaped, which can effectively prevent the suture body 4 from being pulled out along the vertical direction as a whole. If the lower jaw body 32 falls off in the axial direction, the one-way wedge block 611 has a one-way guide property that prevents the suture body 4 from moving away from the lower jaw body 32, which can effectively prevent the suture body 4 from moving away from the lower jaw body 32 as a whole along the axial direction of the lower jaw body 32. Combined with the positioning of the assembly strip 42 and the one-way wedge block 611, the suture body 4 can be quickly installed in the lower jaw body 32 and the connection stability can be maintained. Furthermore, in order to improve the safety of the suture body 4 in the patient's body, a guide head 43 is further provided at one end of the suture body 4. Both the suture body 4 and the guide head 43 are made of medical flexible silicone structure.

[0056] See also Figure 8 - Figure 12, two groups of symmetrically arranged suture needle groups are provided on the side opposite to the upper clamp body 31. In order to improve the suturing density of the affected part, each group of suture needle groups includes a plurality of equidistant and adjacent staggered needle grooves 41, and a suture titanium nail 8 is provided in the needle groove 41. An anvil plate 5 is fixed on the side opposite to the upper clamp body 31 and the lower clamp body 32. The anvil plate 5 is provided with a curved nail groove 51 that matches the suture titanium nail 8. During the actual operation, the operator adjusts the specific position of the suture head 3 in the patient's body through the multi-function handle 1 and the transmission rod 2, and realizes the resection and suturing of the affected part by closing the upper clamp body 31 and the lower clamp body 32;

[0057] See also Figure 8 - Figure 12 and Figure 19 , wherein the length of the suture titanium nails 8 in the two groups of suture needle groups gradually increases in the direction away from the cutting mechanism 6, and the suture titanium nails 8 are in a gate-shaped structure. Both ends of the suture titanium nails 8 are provided with matching inclined surfaces 81, and the two groups of matching inclined surfaces 81 are arranged in the same direction. The two groups of matching inclined surfaces 81 are respectively provided with matching male grooves 82 and matching female grooves 83. Two groups of guide grooves 511 are provided in the bent nail groove 51. In order to enable the two ends of the suture titanium nail 8 to be bent and overlapped in steps, the depths of the two groups of guide grooves 511 are different. In order to maintain the matching degree of the matching male groove 82 and the matching female groove 83, a convex point 512 is provided between the two groups of guide grooves 511. When the end of the suture titanium nail 8 enters the convex point 512, it is squeezed by the convex point 512, and the matching male groove 82 is aligned with the matching female groove 83 and approaches the surface of the affected part.

[0058] During the suturing process, the upper clamp body 31 and the lower clamp body 32 are aligned with each other, and under the pressure between the two, the suture titanium nail 8 in the needle groove 41 is pushed toward the anvil 5. During this process, the end of the suture titanium nail 8 penetrates the affected part, and the end of the suture titanium nail 8 is bent inward by the guidance of the guide groove 511 to complete the suturing operation on the affected part.

[0059] Compared with traditional needle and thread suturing, the present application does not require complicated needle threading and delicate knotting operations, which reduces technical difficulty. It can be quickly operated in a narrow abdominal cavity space, reducing surgical operation time and reducing the risk of patients under anesthesia. At the same time, through the matching design of the male groove 82 and the female groove 83, on the one hand, it avoids secondary damage to the affected part after surgery due to incomplete matching of the ends of the suture titanium nail 8, and at the same time, it can effectively improve the suture firmness of the suture titanium nail 8 on the affected part and avoid the occurrence of detachment.

[0060] See also Figure 13 - Figure 19, wherein the suture body 4 is further provided with a cutting mechanism 6 between the two groups of suture needle groups, and a driving mechanism is provided in the suture body 4 to drive the cutting mechanism 6 to move up and close to the upper clamp body 31, and the cutting mechanism 6 includes a knife strip 62, and arc-shaped elastic plates 61 are symmetrically fixed on both sides of the knife strip 62, and a storage groove 44 for accommodating the knife strip 62 is provided in the suture body 4, and one end of the arc-shaped elastic plate 61 away from the knife strip 62 extends through the suture body 4 and is fixed with a one-way wedge block 611, and several one-way wedge blocks 611 are evenly distributed on the arc-shaped elastic plate 61, and the number of locking grooves 323 matches the number of one-way wedge blocks 611.

[0061] The traditional anastomosis and cutting device needs to replace the operating handle on the multifunctional handle 1 after completing the suturing action, so that the blade needs to move along a specific track, and the blade head needs to be equipped with a complex push-blade structure. The blade strip 62 in the present application is pushed upward as a whole by the driving mechanism, and the process of suturing first and then cutting as a whole can be realized after the upper clamp body 31 and the lower clamp body 32 are completely closed. There is no need to replace the operating handle on the multifunctional handle 1, and the suturing and cutting are seamlessly connected, which further reduces the operation time of the abdominal surgery.

[0062] For details, please refer to Figure 13 - Figure 19 The driving mechanism includes a driving bar 7 arranged in the suture body 4, and two groups of driving bars 7 are symmetrically arranged on both sides of the cutting mechanism 6. The top of the driving bar 7 is provided with multiple groups of support seats 72 for supporting the suture titanium nails 8. A flip bar 71 is fixed to one side of the bottom of the driving bar 7. The driving bar 7 extends to one side of the outer wall of the suture body 4. A flip groove 321 corresponding to the flip bar 71 is provided in the assembly groove of the lower clamp body 32. It should be noted that the end section of the flip bar 71 is semicircular to improve the smoothness of the rotation of the support seat 72 in the flip groove 321. An extrusion bar 73 is also provided at the bottom of the driving bar 7.

[0063] It should be noted that, in the present embodiment, the cross-section of one side of the suture body 4 close to the upper clamp body 31 is arranged in an arc shape. When the upper clamp body 31 and the lower clamp body 32 clamp the affected part and align them, the upper clamp body 31 pre-presses the middle part of the suture body 4, that is, the convex part of the arc surface. On the one hand, the suture titanium nail 8 close to the cutting mechanism 6 is first compressed and aligned. On the other hand, after the driving bar 7 is compressed, the end of the flip bar 71 is used as the rotation point to make the two groups of driving bars 7 relative to each other inward, and the extrusion bar 73 is used to compress the arc-shaped elastic plate 61 to keep the arc-shaped elastic plate 61 straight. Then, the effect of the increase in the length of the two groups of arc-shaped elastic plates 61 from the arc surface to the plane is used to push the cutting mechanism 6 as a whole close to the upper clamp body 31, completing the cutting action of the knife bar 62 on the affected part.

[0064] After the operation is completed, the clamping force between the upper clamp body 31 and the lower clamp body 32 is relaxed. After the arc-shaped elastic plate 61 loses the pressing force of the upper clamp body 31, it uses its own elastic force to reset, and the knife strip 62 can be retracted into the suture body 4, avoiding secondary damage when the surgical instrument is retrieved from the patient's body. Compared with the traditional push-knife structure, there is no problem of the knife head being exposed due to the knife getting stuck.

[0065] See also Figure 20 After the driving bar 7 flips a certain angle, it drives the suture titanium nail 8 on the support seat 72 to flip a certain angle synchronously. Compared with the traditional straight-on anastomosis suturing method, the suture titanium nail 8 can be away from the edge side of the affected part after the deflection angle, thereby reducing the thickness of the affected part that the suture titanium nail 8 needs to puncture, further improving the firmness of the suture titanium nail 8.

[0066] For further information, see Figure 19 The cam 323 is pressed against the top of the locking groove 323, and the cam 323 is pressed against the top of the locking groove 323, so that the cam 323 is pressed against the bottom of the locking groove 323, and the cam 323 is pressed against the bottom of the locking groove 323. In the material return groove 322, in order to improve the smoothness of the sliding of the one-way wedge block 611, the end section of the one-way wedge block 611 is semicircular. Since the material return groove 322 is a through groove structure, the one-way wedge block 611 can slide freely in the material return groove 322. Therefore, after the upper clamp body 31 and the lower clamp body 32 complete the clamping and suturing operation, the one-way wedge block 611 enters the material return groove 322 and is automatically unlocked. The suture body 4 as a whole can be freely pulled out along the axial direction of the lower clamp body 32, which improves the convenience of disassembly of the suture body 4.

[0067] For further information, see Figure 16 and Figure 19The top and sides of the blade 62 are provided with a plurality of equally spaced drug supply holes 622. The bottom of the blade 62 is provided with a drug guide channel 621 connected to the drug supply holes 622. A drug delivery mechanism 46 is also provided in the suture body 4. The drug delivery mechanism 46 includes a second air cavity 461 and a drug cavity 462. The arc-shaped elastic plate 61 has an elastic force that drives the blade 62 to move downward toward the drug cavity 462. The drug cavity 462 is connected to the drug guide channel 621. The drug cavity 462 is filled with an anti-adhesion drug. Specifically, the anti-adhesion drug is polyethylene glycol gel. Polyethylene glycol gel can physically block contact between tissues and can maintain its gel state for a certain period of time, providing a relatively independent environment for tissue repair. Its hydrophilicity can prevent fibrin deposition and tissue adhesion. For example, in abdominal surgeries such as appendectomy and cholecystectomy, it can be used to reduce adhesion between the intestine and the abdominal wall or between the intestine.

[0068] Two groups of first air cavities 45 are symmetrically provided at the bottom of the suture body 4. The first air cavities 45 are connected to the second air cavity 461. In order to maintain the driving bar 7 after flipping, the suture body 4 has sufficient supporting force on the driving bar 7 to prevent the driving bar 7 from continuously flipping down, which causes the suture titanium nail 8 to fail under pressure. The bottom of the first air cavity 45 is inclined, and the hardness of the suture body 4 at the top of the inclined surface of the first air cavity 45 is less than the hardness of the bottom of the inclined surface of the first air cavity 45. It should be noted that the soft part and the hard part of the suture body 4 are produced as a whole using a secondary injection molding process.

[0069] See also Figure 15 In order to further improve the sterility safety of the cutting mechanism 6 encapsulated in the suture body 4, a sealing film 441 corresponding to the knife strip 62 is fixed on the top of the suture body 4.

[0070] During the process of pressing the upper clamp body 31 and the lower clamp body 32 together, the first air cavity 45 is squeezed by the squeezing strip 73, and the internal gas is transferred to the second air cavity 461, causing the second air cavity 461 to expand and squeeze the medicine cavity 462. On the one hand, it provides support for the knife strip 62 to squeeze and cut the affected part. On the other hand, the anti-adhesion drug stored in the medicine cavity 462 is transferred to the drug supply hole 622 through the drug guide channel 621, so that the knife strip 62 can automatically apply the anti-adhesion drug to the cutting end of the affected part when cutting, so as to reduce the subsequent adhesion between the affected part and the intra-abdominal tissue, thereby improving the efficiency of the healing of the affected part.

[0071] The present invention reduces the pusher structure of the multifunctional handle 1 by improving the suture titanium nail 8 and the cutting mechanism 6, thereby improving the anti-slip property and safety of the suture titanium nail 8, and can effectively improve the suturing efficiency and operational safety in abdominal surgery. It has market prospects and is suitable for promotion and application.

[0072] The above is only the best implementation method adopted by this application in combination with current actual needs, but the scope of protection of this application is not limited to this.

Claims

1. A surgical laparoscopic suturing instrument, comprising a multifunctional handle (1) and a suturing head (3), wherein operating power is transmitted between the multifunctional handle (1) and the suturing head (3) via a transmission rod (2), and characterized in that: The suturing head (3) comprises an upper clamp body (31) and a lower clamp body (32), wherein the upper clamp body (31) and the lower clamp body (32) are arranged relative to each other and are rotatably connected, and the suturing body (4) is detachably connected to the lower clamp body (32); The suture body (4) is provided with two symmetrically arranged suture needle groups on the side opposite to the upper clamp body (31), and each suture needle group includes a plurality of needle grooves (41) that are equidistant and adjacent to each other and staggered. Suture titanium nails (8) are provided in the needle grooves (41). An anvil (5) is fixed on the side opposite to the lower clamp body (32) of the upper clamp body (31), and a curved nail groove (51) is provided on the anvil plate (5) that matches the suture titanium nails (8). A mounting strip (42) is fixed to the side of the suturing body (4) opposite to the lower clamp body (32), and a plurality of unidirectional wedge blocks (611) arranged at equal intervals are provided on both sides of the mounting strip (42) of the suturing body (4). A mounting groove corresponding to the suturing body (4) is provided on the side of the lower clamp body (32) opposite to the upper clamp body (31), and a dovetail groove (324) matching the mounting strip (42) and a locking groove (323) matching the unidirectional wedge block (611) are provided in the mounting groove. The suturing body (4) is further provided with a cutting mechanism (6) between the two groups of suture needles, and a driving mechanism for driving the cutting mechanism (6) to move upward and close to the upper clamp body (31) is provided in the suturing body (4); A guide head (43) is further provided at one end of the suturing body (4), and both the suturing body (4) and the guide head (43) are medical flexible silicone structures. The cutting mechanism (6) includes a knife strip (62), and a receiving groove (44) for receiving the knife strip (62) is provided in the suturing body (4). Arc-shaped elastic plates (61) are symmetrically fixed on both sides of the knife strip (62), and one end of the arc-shaped elastic plate (61) away from the knife strip (62) extends through the suturing body (4) and is fixed with the one-way wedge block (611); A plurality of the one-way wedge blocks (611) are evenly spaced and arranged on the arc-shaped elastic plate (61), the number of the locking grooves (323) matches the number of the one-way wedge blocks (611), and the one-way wedge blocks (611) have a one-way guide property for preventing the suture body (4) from moving away from the lower clamp body (32); The length of the titanium suture nails (8) in the two groups of suture needle groups gradually increases in the direction away from the cutting mechanism (6), and the titanium suture nails (8) are in a gate-shaped structure. Both ends of the titanium suture nails (8) are provided with matching bevels (81), and the two groups of matching bevels (81) are arranged in the same direction. The two groups of matching bevels (81) are respectively provided with matching male grooves (82) and matching female grooves (83); Two groups of guide grooves (511) are provided in the bent nail groove (51), the two groups of guide grooves (511) have different depths, and a convex point (512) is provided between the two groups of guide grooves (511); The driving mechanism comprises a driving bar (7) arranged in the suturing body (4), two groups of driving bars (7) are symmetrically arranged on both sides of the cutting mechanism (6), a plurality of supporting seats (72) for supporting the suturing titanium nails (8) are provided on the top of the driving bar (7), a flip bar (71) is fixed on one side of the bottom of the driving bar (7), the flip bar (71) extends to one side of the outer wall of the suturing body (4), and a flip groove (321) corresponding to the flip bar (71) is provided in the assembly groove of the lower clamp body (32); The bottom of the driving bar (7) is further provided with an extrusion bar (73); A plurality of equally spaced medicine supply holes (622) are provided on both sides of the top of the knife strip (62), a medicine guide channel (621) is provided at the bottom of the knife strip (62) and is connected to the medicine supply holes (622), and a drug delivery mechanism (46) is further provided in the suture body (4), the drug delivery mechanism (46) comprising a second air cavity (461) and a medicine cavity (462), the medicine cavity (462) being connected to the medicine guide channel (621), and the medicine cavity (462) is filled with an anti-adhesion drug; Two groups of first air cavities (45) are symmetrically provided at the bottom of the suturing body (4), and the first air cavities (45) are both connected to the second air cavities (461).

2. A surgical laparoscopic suturing instrument according to claim 1, characterized in that: The bottom of the first air cavity (45) is in the shape of an inclined plane, a sealing film (441) corresponding to the knife strip (62) is fixed to the top of the suture body (4), and the end section of the one-way wedge block (611) is in the shape of a semicircle.

3. A surgical laparoscopic suturing instrument according to claim 1, characterized in that: The arc-shaped elastic plate (61) has an elastic force that drives the blade (62) to move downward close to the medicine cavity (462).

4. A surgical laparoscopic suturing instrument according to claim 1, characterized in that: Two sets of symmetrically arranged material return slots (322) are further provided in the assembly slot of the lower clamp body (32), the material return slots (322) being arranged at the top of the locking slot (323), and a guide groove (3231) is provided on one side of the locking slot (323) close to the material return slot (322).

5. A surgical laparoscopic suturing instrument according to claim 1, characterized in that: The cross-section of one side of the suturing body (4) close to the upper clamp body (31) is arranged in an arc shape, the cross-section of the assembly strip (42) is in a dovetail shape, and the cross-section of the end of the flip strip (71) is in a semicircular shape.

6. A surgical laparoscopic suturing instrument according to claim 2, characterized in that: The hardness of the suture body (4) at the top portion of the inclined surface of the first air cavity (45) is smaller than the hardness of the suture body (4) at the bottom portion of the inclined surface of the first air cavity (45).

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