Surgical microscopic bent forceps

Abstract

The invention relates to the technical field of medical apparatus and instruments, in particular to a pair of surgical microscopic curved forceps which comprises two grips, an upper jaw and a lower jaw are fixedly mounted at the left ends of the two grips respectively, a surgical needle for suturing is arranged between the upper jaw and the lower jaw, a lower integration bin is detachably mounted at the inner end of the lower jaw, and an upper integration bin is detachably mounted at the inner end of the lower integration bin. A needle threading device for threading a surgical needle is arranged in the lower integration bin, a rotating plate is arranged above the lower integration bin, the surgical needle is conveniently clamped, a clamping groove is formed in the upper end of the rotating plate, the surgical needle is placed in the clamping groove, an upper pressing plate is fixedly installed at the bottom end of the upper jaw, and a matching plate for assisting in fixing the surgical needle is rotatably installed at the left end of the upper pressing plate. The rotation angle of the surgical needle is precisely regulated and controlled through deformation of the thenar elastic piece, the suture precision is remarkably improved, a suture line can be taken according to needs through an innovative selective thread drawing mechanism, threading of the whole suture line is avoided, tissue damage is effectively reduced, and the surgical needle is particularly suitable for fine and complex surgical operation.

Description

Technical Field

[0001] The invention relates to the technical field of medical device apparatus, in particular to a pair of surgical micro curved forceps. Background Art

[0002] Surgical treatments for Alzheimer's disease (such as neuromodulation, deep brain stimulation, or Aβ protein clearance) usually require high-precision operations under a microscope or endoscope to avoid damaging surrounding healthy brain tissue. Currently, commonly used microsurgical instruments in neurosurgery include straight-tip forceps and gun-shaped forceps, but they have limitations when dealing with deep and tortuous anatomical structures (such as the hippocampus and basal ganglia).

[0003] After searching, it was found that the prior art publication number is CN213722189U, which discloses a microsurgery needle holding forceps, including a forceps handle A and a forceps handle B. The front ends of the forceps handle A and the forceps handle B are hingedly connected by a rotating shaft. The forceps handle A and the forceps handle B are respectively connected to the forceps head A and the forceps head B before the rotating shaft. The corresponding transverse teeth and grooves are evenly arranged on the corresponding surfaces of the forceps head A and the forceps head B. The forceps handle A and the forceps handle B are respectively provided with an internal and external mounting groove behind the rotating shaft. A knife seat of corresponding shape is installed in the mounting groove. A blade is installed at the bottom of the seat, and the blade comes between the clamp handle A and the clamp handle B. The outside of the clamp handle A and the clamp handle B are provided with a limiting mechanism for fixing the knife seat at both ends of the groove A. The clamp handle A and the clamp handle B are provided with an anti-slip rubber ring belt after the installation groove. The clamp handle B is provided with a limiting finger ring on the outside at the front end of the anti-slip rubber ring belt. The rear end of the clamp handle A is provided with a reset spring A, and the rear end of the clamp handle B is provided with a reset spring B. The end of the reset spring B passes through the end of the reset spring A. This solution has the advantages of convenient operation, stable needle holding and convenient cutting.

[0004] Therefore, based on the above search and combined with existing technologies, surgical needle threading relies on manual operation, and the entire suture needs to be threaded through the tissue during suturing, causing unnecessary tissue damage and increasing the risk of complications. At the same time, repeated threading operations are complicated and increase the burden on the surgeon. For surgeons who work for long periods of time, the surgeon's operating load is large and fatigue is easy to occur, which affects the suturing accuracy. For this reason, this application proposes a surgical micro curved forceps. Summary of the Invention

[0005] The object of the present invention is to provide a surgical micro curved forceps to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a surgical micro curved forceps, comprising two handles, wherein the left ends of the two handles are fixedly mounted with an upper jaw and a lower jaw, a surgical needle for suturing is arranged between the upper jaw and the lower jaw, and a lower integrated bin is detachably mounted on the inner end of the lower jaw, and a needle threading device for threading the surgical needle is arranged inside the lower integrated bin, a rotating plate is arranged above the lower integrated bin for facilitating clamping of the surgical needle, and a card slot is provided on the upper end of the rotating plate, and the surgical needle is placed in the card slot, so that the surgical needle is clamped more firmly and prevented from displacement, an upper pressure plate is fixedly mounted on the bottom end of the upper jaw, and a matching plate for assisting in fixing the surgical needle is rotatably mounted on the left end of the upper pressure plate.

[0007] As a further solution of the present invention, the needle threading device includes an isolation plate, which is fixedly installed on the left side of the upper end of the lower integrated bin, and the isolation plate is located below the rotating plate. An isolation ring is fixedly installed on the inner end of the isolation plate, and a guide block is fixedly installed on the inner end of the isolation ring. A guide groove is provided on the end of the guide block close to the handle, and the inner end of the isolation plate is fixedly connected to the guide tube, and the outlet of the guide tube corresponds to the guide groove on the outer surface of the guide block.

[0008] As a further solution of the present invention, a spring wire is passed through the inner end of the guide tube, and a spring coil is fixedly connected to the end of the spring wire close to the guide block. A threading hole is provided on the outer surface of the rotating plate, and the threading hole corresponds to the guide groove on the outer surface of the guide block. When the spring wire is forced to move toward the guide block, it contacts the guide groove on the outer surface and then passes into the threading hole along the guide groove. The coordinated design of the spring wire and the guide groove ensures that the threading path is precisely controllable, thereby achieving reliable guided threading action.

[0009] As a further solution of the present invention, a limit box is fixedly installed on the inner end of the lower integration bin, and a sealing plate is provided at the upper end of the lower integration bin. The sealing plate is located on the right side of the isolation plate, and a movable plate is passed through the inner end of the limit box. The spring wire is fixedly connected to the movable plate. Through the precise coordination between the limit box and the movable plate, the movement trajectory of the spring wire is ensured to be stable and reliable, and operational deviation is avoided.

[0010] As a further solution of the present invention, the end of the movable plate away from the limit box is fixedly connected to a connecting block, the outer surface of the limit box is rotatably installed with a limit rod, the limit rod corresponds to the connecting block, and the inner left end of the limit box is fixedly connected to a corrugated spring sheet, the left end of the corrugated spring sheet is fixedly connected to the right end of the movable plate, and the corresponding cooperation between the limit rod and the connecting block is used to achieve precise control of the movable plate stroke to ensure operational stability.

[0011] As a further solution of the present invention, a rotating column is rotatably installed on the inner end of the isolation ring, the upper end of the rotating column is fixedly connected to the bottom end of the rotating plate, a passive plate is provided on the left side of the rotating column, and a traction plate is wound on the outer surface of the rotating column, and the free end of the traction plate is fixedly connected to the passive plate.

[0012] As a further solution of the present invention, a folding plate is provided inside the isolation plate, a slide groove is provided on the outer surface of the handle, a thenar shrapnel is provided in the slide groove, and a connecting rod is clamped at the right end of the thenar shrapnel, a plurality of holes are provided on the outer surface of the folding plate, and the structural design of the folding plate is provided inside the isolation plate, so as to realize the intelligent switching of the working state of the instrument and improve the operational flexibility.

[0013] As a further solution of the present invention, the folding plate is fixedly connected to a traction line at one end close to the passive plate. The free end of the traction line is arranged in the hole and extends to the inside of the handle, and is fixedly connected to the clamping rod. The fixed connection of the traction line forms a closed-loop force conduction path, ensuring the precise transmission of operating force from the handle to the folding plate.

[0014] As a further solution of the present invention, a rectangular hole is opened on the outer surface of the upper pressure plate, and two rubber blocks are fixedly installed in the rectangular hole. The two rubber blocks are parallel to each other. The rubber blocks correspond to the threading holes on the outer surface of the rotating plate. The precise guide channel formed by the two parallel rubber blocks ensures the accuracy of the suture threading path.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. When the present invention is used, the rotation angle of the surgical needle is precisely controlled by the deformation of the thenar shrapnel, significantly improving the suturing accuracy. Its innovative selective thread extraction mechanism can take the suture thread on demand, avoiding the need to thread the entire thread, effectively reducing tissue damage, and is particularly suitable for delicate and complex surgical procedures.

[0017] 2. The present invention realizes the automatic threading function of the surgical needle. The spring wire is accurately inserted into the threading hole along the guide groove and passes through the needle eye, which greatly improves the threading efficiency. After the suturing is completed, the surgical needle can be quickly reset to the rotating plate slot, which is convenient for repeated operations. It simplifies the tedious process of traditional manual threading and significantly reduces the operating load of the surgeon. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of a surgical micro curved forceps;

[0019] Figure 2 This is a schematic diagram of the structure of the thenar shrapnel inside the grip;

[0020] Figure 3 Schematic diagram of the structure inside the lower jaw;

[0021] Figure 4 This is a schematic diagram of the structure inside the lower integration warehouse;

[0022] Figure 5 Schematic diagram of the structure inside the isolation plate;

[0023] Figure 6 This is a state diagram of the suture passing through the spring coil;

[0024] Figure 7 It is a structural diagram of the position relationship between the limit box and the sealing plate;

[0025] Figure 8 It is a structural diagram of the position relationship between the limit box and the movable plate;

[0026] Figure 9 Schematic diagram of the internal structure of the limit box;

[0027] Figure 10 Schematic diagram of the internal structure of the isolation ring;

[0028] Figure 11 Schematic diagram of the positional relationship between the upper jaw and the upper pressure plate;

[0029] Figure 12 This is the disassembly diagram of the upper pressure plate and rubber block.

[0030] In the figure: 1. Handle; 2. Upper jaw; 3. Lower jaw; 21. Surgical needle; 22. Suture thread;

[0031] 101. Thenar shrapnel; 102. Connecting rod; 103. Pull line; 104. Limit block;

[0032] 201, upper pressing plate; 202, rubber block; 203, matching plate;

[0033] 301, lower integration chamber; 302, isolation plate; 303, rotating plate; 304, sealing plate; 305, extrusion block; 306, limit box; 307, guide tube; 308, movable plate; 309, connecting block; 310, limit rod; 311, pry bar; 312, corrugated spring; 313, spring wire; 314, spring coil;

[0034] 401, folding plate; 402, guide block; 403, passive plate; 404, magnetic block; 405, threading hole; 406, isolation ring; 407, rotating column; 408, traction plate. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] Example 1: Please refer to Figure 1 - Figure 5 、 Figure 11 A surgical micro curved forceps, comprising two handles 1, the left ends of the two handles 1 are respectively fixedly welded with an upper jaw 2 and a lower jaw 3, a surgical needle 21 for suturing is provided between the upper jaw 2 and the lower jaw 3, the surgical needle 21 is made of stainless steel and is coated (such as siliconized) to reduce tissue friction, the handle 1, the upper jaw 2 and the lower jaw 3 are all made of titanium alloy, compatible with MRI, suitable for neurosurgery and cardiovascular surgery, lighter than stainless steel, reducing operator fatigue, the inner end of the lower jaw 3 is detachable The lower integrated chamber 301 is installed, and a needle threading device for threading the surgical needle 21 is provided inside the lower integrated chamber 301. A rotating plate 303 is provided above the lower integrated chamber 301 to facilitate clamping the surgical needle 21. A card slot is provided on the upper end of the rotating plate 303. The surgical needle 21 is placed in the card slot, which makes the surgical needle 21 clamped more firmly and prevents displacement. The bottom end of the upper jaw 2 is fixedly installed with an upper pressing plate 201, and the left end of the upper pressing plate 201 is rotatably installed with a matching plate 203 for auxiliary fixing of the surgical needle 21;

[0037] like Figure 5 As shown, specifically, a plurality of magnetic blocks 404 are fixedly installed in the card slot at the upper end of the rotating plate 303. The surgical needle 21 made of stainless steel has weak magnetism. The magnetic block 404 can attract the surgical needle 21 and guide the surgical needle 21 to the card slot at the upper end of the rotating plate 303. More specifically, the left end of the card slot on the rotating plate 303 extends to the end, and the right end is located inside the rotating plate 303, so that when the surgical needle 21 is stuck inside the card slot, it can be more convenient to apply force to prevent the surgical needle 21 from sliding during use. The position of the surgical needle 21 near the needle eye is semicircular, so after the magnetic block 404 is attracted, the bottom end of the matching plate 203 contacts the plane of the outer surface of the surgical needle 21, and under the action of the pressure applied by the upper jaw 2 and the lower jaw 3 in the direction of approaching each other, the surgical needle 21 cannot rotate on its own.

[0038] See also Figure 3 - Figure 6The needle threading device includes an isolation plate 302, which is fixedly installed on the left side of the upper end of the lower integration chamber 301. The isolation plate 302 is located below the rotating plate 303. An isolation ring 406 is fixedly installed on the inner end of the isolation plate 302. A guide block 402 is fixedly welded to the inner end of the isolation ring 406. A guide groove is provided on the end of the guide block 402 close to the handle 1. The inner end of the isolation plate 302 is fixedly connected to the guide tube 307 through a clamp. The outlet of the guide tube 307 corresponds to the guide groove on the outer surface of the guide block 402.

[0039] The inner end of the guide tube 307 is passed through a spring wire 313, and the end of the spring wire 313 near the guide block 402 is fixedly connected to a spring coil 314. The spring wire 313 and the spring coil 314 are both made of elastic metal. After being deformed by force, they can still return to their original state. The spring coil 314 is elliptical. The outer surface of the rotating plate 303 is provided with a threading hole 405, and the threading hole 405 is located in the card groove on the outer surface of the rotating plate 303. The threading hole 405 corresponds to the guide groove on the outer surface of the guide block 402. The needle eye on the surgical needle 21 corresponds to the threading hole 405, and the thickness of the spring coil 314 is smaller than the aperture of the surgical needle 21. The outside of the lower jaw 3 is provided with a suture 22, and the outer surface of the lower jaw 3 is provided with a perforation. The free end of the suture 22 passes through the perforation on the outer surface of the lower jaw 3, the lower integrated chamber 301 and the inside of the guide tube 307, and then passes through the inside of the spring coil 314 (the suture 22 passes through the spring coil 314 as shown in the figure). Figure 6 As shown), the spring wire 313 is forced to move toward the guide block 402 and contacts the guide groove on its outer surface, and then passes through the threading hole 405 along the guide groove;

[0040] Specifically, the spring coil 314 is arranged vertically. Then, when the spring coil 314 is passed through the threading hole 405 along the guide groove, it is passed through the eye of the surgical needle 21 with the suture thread 22 .

[0041] Example 2: Please refer to Figure 5 - Figure 9, a surgical micro curved forceps, based on embodiment 1, the inner end of the lower integrated chamber 301 is fixedly installed with a limit box 306, the upper end of the lower integrated chamber 301 is provided with a sealing plate 304, the sealing plate 304 is located on the right side of the isolation plate 302, the sealing plate 304 and the lower integrated chamber 301 are connected by a spring sheet, after the sealing plate 304 moves downward, it will return to its initial state under the elastic force of the spring sheet, the inner end of the limit box 306 is penetrated by a movable plate 308, and the spring wire 313 is fixedly connected to the movable plate 308 Then, the end of the movable plate 308 away from the limit box 306 is fixedly welded with a connecting block 309, and a limit rod 310 is rotatably installed on the outer surface of the limit box 306. The limit rod 310 corresponds to the connecting block 309. A rectangular hole is opened on the outer surface of the limit box 306. The movable plate 308 moves toward the limit box 306. After the connecting block 309 contacts the limit rod 310, it pushes the limit rod 310 to rotate, and then moves to the right side of the limit rod 310. The limit rod 310 and the limit box 306 are clamped by a torsion spring.

[0042] like Figure 7 、 Figure 8 、 Figure 11 When the locking cam 310 is unlocked, the locking cam 310 is unlocked and the locking cam 310 is unlocked, so that the cam 310 can be unlocked when the locking cam 310 is unlocked.

[0043] The inner left end of the limit box 306 is fixedly connected with a corrugated spring piece 312, and the left end of the corrugated spring piece 312 is fixedly connected to the right end of the movable plate 308. The movable plate 308 cannot be folded. When the movable plate 308 moves toward the limit box 306, the corrugated spring piece 312 is restricted by the limit box 306 and can only move along the corrugated folding path. The connecting block 309 is now located on the right side of the limit rod 310, but the latch at the upper end of the limit rod 310 is engaged by the pry rod 311, so that the corrugated spring piece 312 is always in a compressed state, and the elastic force cannot be released.

[0044] See also Figure 5 、 Figure 10, the inner end of the isolation ring 406 is rotatably installed with a rotating column 407, and the rotating column 407 and the isolation ring 406 are clamped by a reset torsion spring. The upper end of the rotating column 407 is fixedly connected to the bottom end of the rotating plate 303, and the rotating column 407 is located at the center of the rotating plate 303. The rotating connection between the matching plate 203 and the upper pressure plate 201 corresponds to the rotating column 407. A passive plate 403 is provided on the left side of the rotating column 407, and a guide groove is opened inside the isolation ring 406. A traction piece 408 is wound around the outer surface of the rotating column 407, and the free end of the traction piece 408 is fixedly connected to the passive plate 403 after being guided by the guide groove;

[0045] like Figure 2 、 Figure 5 、 Figure 8 、 Figure 10 As shown, a folding plate 401 is provided inside the isolation plate 302, and the side of the folding plate 401 close to the guide block 402 abuts against the inner wall of the isolation plate 302, and the folding plate 401 is an elastic metal sheet, which can still be restored to its initial state under the action of elastic force after folding, and a slide groove is provided on the outer surface of the handle 1, and a fish-element spring piece 101 is provided in the slide groove, the left end of the fish-element spring piece 101 is fixedly connected to the handle 1, and the right end can slide freely on the inner wall of the slide groove, and the right end of the fish-element spring piece 101 is clamped with a connecting rod 102, and a plurality of holes are provided on the outer surface of the folding plate 401, and one end of the folding plate 401 close to the passive plate 403 is fixedly connected to the traction line 103, and the free end of the traction line 103 is reciprocated in a wavy shape and then passes through the interior of the handle 1 and is fixedly connected to the connecting rod 102;

[0046] Specifically, the handle 1 corresponding to the upper jaw 2 is connected to the lower jaw 3, and the handle 1 corresponding to the lower jaw 3 is connected to the upper jaw 2, and the traction line 103 is passed through the handle 1 connected to the lower jaw 3. When the operator holds the two handles 1, the thenar part of the palm contacts the outer surface of the thenar shrapnel 101. After pressing the thenar shrapnel 101 downward, the thenar shrapnel 101 is deformed by force and drives the clamping rod 102 to move to the right. The clamping rod 102 pulls the folding plate 401 to fold through the traction line 103. The passive plate 403 is located at the folding line and moves toward the rotating column 407 with the folding action. More specifically, a wire hole is opened on the outer surface of the connecting block 309, and the traction wire 103 is passed through the wire hole. The outer surface of the traction wire 103 is fixedly connected to the limit block 104. The volume of the limit block 104 is larger than the inner diameter of the wire hole. The limit block 104 is located on the left side of the connecting block 309. When the traction wire 103 moves, it drives the limit block 104 to move, and then the limit block 104 pushes the connecting block 309 to move.

[0047] The outer surface of the upper pressing plate 201 is provided with a rectangular hole, and two rubber blocks 202 are fixedly installed in the rectangular hole. The two rubber blocks 202 are parallel to each other and fit together. The rubber blocks 202 correspond to the threading holes 405 on the outer surface of the rotating plate 303. A gap is left between the two rubber blocks 202, and an arc-shaped groove is provided at the bottom ends of the two rubber blocks 202, so that the spring coil 314 can be more easily passed between the two rubber blocks 202. The spring coil 314 drives the suture 22 to pass between the two rubber blocks 202 and is exposed at the upper ends of the two rubber blocks 202. Because the two rubber blocks 202 fit together and completely wrap the spring coil 314, when the spring coil 314 moves downward, the suture 22 is left in the rectangular hole on the outer surface of the upper pressing plate 201 under the action of the mutual fit of the two rubber blocks 202, and the threading action of the surgical needle 21 is completed.

[0048] The working principle of the present invention is:

[0049] First, the suture thread 22 is passed through the spring coil 314 in advance, pressing the thenar spring piece 101 to deform it, and the limit block 104 is driven to move when the traction line 103 moves. Then the limit block 104 pushes the connecting block 309 to move. Then, the connecting block 309 contacts the limit rod 310 and pushes the limit rod 310 to rotate. Then, the connecting block 309 moves to the right side of the limit rod 310 and is blocked by the limit rod 310. At this time, the corrugated spring piece 312 is compressed, and the spring coil 314 is now located at the output port of the guide tube 307. Then, the pressure on the thenar spring piece 101 is released.

[0050] When in use, hold the two handles 1 in one hand, use auxiliary pliers (the surgeon cannot touch the surgical needle 21 directly with his hands during surgery, so the surgeon must use pliers to perform the operation) to pick up the surgical needle 21, and then place the tail end of the surgical needle 21 (i.e. the needle eye position) in the card slot above the rotating plate 303 (the needle eye and the threading hole 405 are aligned), and hold the two handles 1 tightly, so that the upper jaw 2 and the lower jaw 3 are close to each other, so that the matching plate 203 is in contact with the surgical needle 21, and the convex block at the right end of the upper pressure plate 201 is in contact with the sealing plate 304, and The sealing plate 304 is pushed downward, causing the extrusion block 305 to press down the right end of the pry bar 311. Then, the left end of the pry bar 311 tilts up, and the corrugated spring piece 312 drives the movable plate 308 to move under the action of elastic force. When the movable plate 308 moves, it pushes the spring wire 313 and the spring coil 314 to move. At this time, the spring wire 313 is forced to move toward the guide block 402, contacts the guide groove on its outer surface, and then passes through the threading hole 405 along the guide groove. After passing through the eye of the surgical needle 21, it is immediately inserted between the two rubber blocks 202.

[0051] The thenar spring piece 101 is pressed again by the thenar eminence, so that the traction line 103 moves again. At this time, the suture line 22 is left in the rectangular hole on the outer surface of the upper pressing plate 201 under the action of the two rubber blocks 202 sticking to each other. At this time, the threading action of the surgical needle 21 is completed. The traction line 103 pulls the folding plate 401 to fold, and the passive plate 403 is located at the folding line and moves toward the rotating column 407 with the folding action. When the passive plate 403 moves, the traction piece 408 drives the rotating column 407 to rotate, and the rotating column 407 drives the rotating plate 303 to rotate, so that the surgical needle 21 also rotates (and the matching plate 203 also rotates). The deformation amplitude of the thenar spring piece 101 controls the rotation angle of the surgical needle 21, which is convenient for precise operation. When the auxiliary forceps guides the surgical needle 21 to pass through the tissue, the suture line 22 of the required length can be selectively pulled to avoid threading the entire line and reduce tissue damage.

[0052] During the process of suturing tissue, each time a knot is tied on the suture thread 22 and the suture thread 22 is cut, the surgical needle 21 is placed back into the slot above the rotating plate 303 and the threading action is repeated.

[0053] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A surgical micro curved forceps, comprising two handles (1), characterized in that: The left ends of the two grips (1) are respectively fixedly mounted with an upper jaw (2) and a lower jaw (3), a surgical needle (21) for suturing is provided between the upper jaw (2) and the lower jaw (3), the inner end of the lower jaw (3) is detachably mounted with a lower integration chamber (301), the interior of the lower integration chamber (301) is provided with a needle threading device for threading the surgical needle (21), a rotating plate (303) is provided above the lower integration chamber (301) for facilitating the clamping of the surgical needle (21), and a card slot is provided at the upper end of the rotating plate (303), the surgical needle (21) is placed in the card slot, so that the surgical needle (21) is clamped more firmly and prevented from shifting, an upper pressure plate (201) is fixedly mounted at the bottom end of the upper jaw (2), and a matching plate (203) for assisting in fixing the surgical needle (21) is rotatably mounted at the left end of the upper pressure plate (201).

2. A surgical micro curved forceps according to claim 1, characterized in that: The needle threading device includes an isolation plate (302), which is fixedly installed on the left side of the upper end of the lower integration chamber (301). The isolation plate (302) is located below the rotating plate (303). An isolation ring (406) is fixedly installed on the inner end of the isolation plate (302), and a guide block (402) is fixedly installed on the inner end of the isolation ring (406). A guide groove is provided at one end of the guide block (402) close to the handle (1). The inner end of the isolation plate (302) is fixedly connected to a guide tube (307), and the outlet of the guide tube (307) corresponds to the guide groove on the outer surface of the guide block (402).

3. A surgical micro curved forceps according to claim 2, characterized in that: A spring wire (313) is passed through the inner end of the guide tube (307), and a spring coil (314) is fixedly connected to one end of the spring wire (313) close to the guide block (402). A threading hole (405) is provided on the outer surface of the rotating plate (303), and the threading hole (405) corresponds to the guide groove on the outer surface of the guide block (402). When the spring wire (313) is forced to move toward the guide block (402), it contacts the guide groove on the outer surface thereof and then passes into the threading hole (405) along the guide groove.

4. A surgical micro curved forceps according to claim 3, characterized in that: A limit box (306) is fixedly installed at the inner end of the lower integration bin (301), a sealing plate (304) is provided at the upper end of the lower integration bin (301), and the sealing plate (304) is located on the right side of the isolation plate (302). A movable plate (308) is passed through the inner end of the limit box (306), and the spring wire (313) is fixedly connected to the movable plate (308).

5. The surgical micro curved forceps according to claim 4, characterized in that: One end of the movable plate (308) away from the limit box (306) is fixedly connected to a connecting block (309); a limit rod (310) is rotatably mounted on the outer surface of the limit box (306); the limit rod (310) corresponds to the connecting block (309); a corrugated spring piece (312) is fixedly connected to the inner left end of the limit box (306); and the left end of the corrugated spring piece (312) is fixedly connected to the right end of the movable plate (308).

6. The surgical micro curved forceps according to claim 2, characterized in that: A rotating column (407) is rotatably mounted on the inner end of the isolation ring (406), the upper end of the rotating column (407) is fixedly connected to the bottom end of the rotating plate (303), a passive plate (403) is provided on the left side of the rotating column (407), a traction sheet (408) is wound around the outer surface of the rotating column (407), and the free end of the traction sheet (408) is fixedly connected to the passive plate (403).

7. The surgical micro curved forceps according to claim 6, characterized in that: A folding plate (401) is provided inside the isolation plate (302), a slide groove is provided on the outer surface of the handle (1), a thenar spring piece (101) is provided in the slide groove, and a clamping rod (102) is clamped at the right end of the thenar spring piece (101), and a plurality of holes are provided on the outer surface of the folding plate (401).

8. The surgical micro curved forceps according to claim 7, characterized in that: One end of the folding plate (401) close to the passive plate (403) is fixedly connected to the pulling wire (103); the free end of the pulling wire (103) is arranged in the hole and extends to the inside of the handle (1), and is fixedly connected to the clamping rod (102).

9. The surgical micro curved forceps according to claim 2, characterized in that: A rectangular hole is provided on the outer surface of the upper pressing plate (201), and two rubber blocks (202) are fixedly installed in the rectangular hole. The two rubber blocks (202) are parallel to each other, and the rubber blocks (202) correspond to the threading holes (405) on the outer surface of the rotating plate (303).

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