An extraocular muscle and lamellar sclera anastomosis device for ophthalmic strabismus surgery

Abstract

The present invention discloses an extraocular muscle and lamellar sclera anastomosis device for ophthalmic strabismus surgery; it relates to the field of extraocular muscle suture; it includes a fixed frame, an arc needle, a movable needle assembly, a size adjustment assembly and a thread-hooking assembly. The arc needle is slidably connected inside the fixed frame, and the lower trajectory of the arc needle is lower than the lower side of the fixed frame. The movable needle assembly is provided with a track for the reciprocating movement of the arc needle inside the fixed frame. The arc needle is provided with a ball head column inside the fixed frame that cooperates with the track. The thread-hooking assembly is provided with a cooperating thread-hooking needle and a bottom rail frame. The bottom rail frame is connected to the movable needle assembly. The track and the ball head column of the movable needle assembly work in cooperation with the work of the thread-hooking needle and the bottom rail frame, so that the thread-hooking needle and the arc needle cooperate to work; the size adjustment assembly accurately determines the distance of the arc needle trajectory below the arc panel, controls the thickness of the lamellar sclera penetrated, ensures that the ideal thickness of the lamellar sclera can be penetrated, achieves the purpose of firmly and accurately suturing the stable muscle and the lamellar sclera, improves the surgical efficiency, and reduces the risk of surgical failure and intraoperative and postoperative complications.

Description

Technical Field

[0001] The present invention relates to the field of extraocular muscle suture in ophthalmic strabismus surgery, and specifically relates to an anastomosis device for extraocular muscle and lamellar sclera in ophthalmic strabismus surgery. Background Art

[0002] During ophthalmic strabismus surgery, the posterior fixation of extraocular muscle is a surgical method that conforms to anatomical and physiological principles for treating hyperfunction of extraocular muscles; the principle of the shortening of extraocular muscle is to excise a certain length of muscle, tighten the muscle, and increase the muscle strength.

[0003] The sclera has different thicknesses at different locations. The thickest part around the optic nerve is about 1 mm, the equator is about 0.4 - 0.6 mm thick, and the sclera thickness at the muscle attachment point is about 0.3 mm. When detaching the extraocular muscle at the attachment point, a 1-mm muscle stump should be left for suturing and fixing the shortened muscle to avoid penetrating the sclera.

[0004] Posterior fixation of extraocular muscle: 1. Make a conjunctival incision parallel to the corneal limbus and about 1 cm long in the inferotemporal fornix, and pass the incision through the Tenon's capsule and reach the sclera; 2. Hold a toothed forceps in each hand and expose the subconjunctival tissue below the incision in a relay manner until the pink extraocular muscle fibers located within the Tenon's capsule are found; 3. Pass a strabismus hook through the belly of the extraocular muscle to fully expose and free the belly of the extraocular muscle; 4. At a position 1 - 1.5 mm posterior to the attachment point of the inferior oblique muscle near the lower edge of the lateral rectus muscle, make a loop suture with a 6-0 absorbable suture at 1 / 3 width of the tendon; 5. Cut the extraocular muscle before placing the preset suture, suture the upper end of the extraocular muscle to the sclera 2 mm temporal and 3 mm downward from the attachment point of the inferior rectus muscle, and extend the other end vertically towards the corneal limbus and suture it to the corresponding sclera; 6. Continuously or intermittently suture the conjunctival incision with an 8-0 nylon suture or a 5-0 silk suture.

[0005] Shortening of extraocular muscle: 1. Make a conjunctival incision parallel to the corneal limbus and about 1 cm long around the muscle to be operated on or adopt a trapezoidal conjunctival incision at the corneal limbus; 2. Separate the Tenon's capsule on both sides of the rectus muscle and expose the scleral surface, use a strabismus hook to traction the rectus muscle, and bluntly separate the check ligaments around the muscle; 3. Flatten the muscle with two strabismus hooks, and make a loop suture with a 6-0 absorbable suture at 1 / 3 width of the tendon at a position 1 mm posterior to the planned tendon resection length; 4. Detach the tendon 2 mm in front of the suture, and suture the loop sutures at the upper and lower edges of the tendon stump to the original muscle attachment point; 5. Continuously or intermittently suture the conjunctival incision with an 8-0 nylon suture or a 5-0 silk suture.

[0006] In summary, the current strabismus surgery process has the following technical problems: regardless of muscle migration or shortening, the surgeon needs to manually loop the muscle with a strabismus line, separate the muscle attachment point, and then reinforce and suture the loop with the strabismus line to the lamellar sclera; especially in this process, because the depth of the sutured lamellar sclera is not appropriate (too deep or too shallow), the lamellar sclera may be penetrated or broken, resulting in deep choroid and retinal damage, slippage of the loop line, loose and unstable muscle loop suture, retinal damage or even detachment, or slippage of the sutured muscle, leading to surgical failure or serious surgical complications. Summary of the invention

[0007] In view of the above-mentioned problems existing in the prior art, the present invention provides an anastomosis device for extraocular muscles and lamellar sclera in ophthalmic strabismus surgery. The thickness of the lamellar sclera can be accurately determined by the ruler on the anastomosis device, which is about 1 / 3-1 / 2 of the sclera thickness. The anastomosis is performed automatically, which is convenient and fast, and can ensure that the ideal lamellar sclera thickness can be penetrated, so as to achieve the purpose of firmly and accurately suturing the extraocular muscles and lamellar sclera, and avoid the problem of surgical failure caused by unsatisfactory suture thickness of the lamellar sclera, such as loose suture, muscle slippage, deep choroid, retinal damage, etc., thereby improving surgical efficiency and reducing the risk of surgical failure and intraoperative and postoperative complications.

[0008] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

[0009] An ophthalmic strabismus surgery anastomosis device for extraocular muscles and lamellar sclera comprises a fixed frame, an arc needle, a movable needle assembly, a size adjustment assembly and a hooking assembly, wherein the fixed frame is slidably connected with the arc needle, the lower track of the arc needle is lower than the lower side of the fixed frame, the movable needle assembly is provided with a track for the arc needle to reciprocate in the fixed frame, the arc needle is provided with a ball head column matched with the track in the fixed frame, the hooking assembly is provided with a matched hooking needle and a rail support frame, the rail support frame is connected to the movable needle assembly, the track and the ball head column of the movable needle assembly work in coordination with the hooking needle and the rail support frame, so that the hooking needle and the arc needle work in coordination;

[0010] The lower side of the fixed frame is provided with an arc panel, and the size adjustment component adjusts the distance between the arc panel and the fixed frame to change the distance of the lower track of the arc needle below the arc panel;

[0011] The fixed frame is provided with an open slot near the thread hooking needle position on the arc needle track, and the thread hooking needle is slidably connected to the open slot position of the fixed frame.

[0012] Further, the moving needle assembly includes a limit block, a carriage, and a ball head sliding column assembly. The moving needle assembly includes a track frame. The limit block is fixedly connected to the upper end of the arc needle. A sliding cavity is formed in the fixed frame. A carriage is slidably connected in the sliding cavity. A sliding groove is formed in the carriage. The limit block is slidably connected in the sliding groove. A vertical groove is formed in the fixed frame. The carriage is fixedly connected with a ball head sliding column assembly at the position of the vertical groove. The track frame is provided with a first flat track, a second track, and a third track. The first flat track, the second track, and the third track are connected end to end in sequence to form a closed loop. The ball head sliding column assembly is slidably connected in the first flat track, the second track, and the third track. The movement of the first flat track cooperates with the vertical groove to enable the ball head sliding column assembly to slide in the vertical groove. The second track is a horizontal track. The third track is a return track connecting the second track and the first flat track;

[0013] When the ball head sliding column assembly of the thread hooking assembly is in the second track, the abutting track frame cooperates with the thread hooking needle. The thread hooking assembly further includes a dislocation assembly that changes the cooperation relationship between the abutting track frame and the thread hooking needle when the ball head sliding column assembly enters and exits the third track.

[0014] Further, the second track is composed of a second flat track and a second inclined track. The third track is composed of a third flat track and a third inclined track. The second inclined track connects the second flat track and the third flat track. One end of the second inclined track is connected to the second flat track. The other end of the second inclined track inclines towards the side close to the ball head sliding column assembly. The end of the second inclined track far from the second flat track is higher than the third flat track. The third inclined track connects the third flat track and the first flat track. One end of the third inclined track is connected to the third flat track. The other end of the third inclined track inclines towards the side close to the ball head sliding column assembly. The end of the third inclined track far from the third flat track is higher than the first flat track, ensuring the one-way sliding of the ball head sliding column assembly in the track frame;

[0015] The ball head sliding column assembly includes a ball head column, a thin rod, a groove rod, and a return spring. The front end of the ball head column is fixedly connected with a thin rod. The thin rod is slidably connected in the groove rod. The groove rod is fixedly connected with the carriage. A return spring is arranged on the thin rod between the ball head column and the groove rod to keep the ball head column in contact with the first flat track, the second track, and the third track.

[0016] Further, the thread hooking assembly further includes a movable seat, a ball abutting member, a limiting post, a compression spring, and a sliding plate. The dislocation assembly includes a fixed inclined block, an upward moving inclined block, and a downward moving inclined block. The movable seat is fixedly connected to the thread hooking needle. A thread hooking groove is formed on the side of the thread hooking needle away from the arc needle to capture and limit the sewing thread. The movable seat is fixedly connected with limiting posts at different horizontal levels of the thread hooking needle. The limiting posts are slidably connected in the fixed frame. A compression spring is sleeved on the limiting posts. A fixed inclined block is arranged on one side of the movable seat. The fixed inclined block is fixedly connected to the fixed frame. An inclined side surface is arranged on the side of the movable seat close to the fixed inclined block. The sliding plate is fixedly connected to the abutting rail frame. An upward moving inclined block and a downward moving inclined block are fixedly connected between the fixed inclined block and the inclined side surface of the sliding plate. The upward moving inclined block is at the same horizontal level as the fixed inclined block and the inclined side surface. The downward moving inclined block is at a position one vertical length distance of an upward moving inclined block below the upward moving inclined block. The upward moving inclined block cooperates with the fixed inclined block, and the downward moving inclined block cooperates with the inclined side surface;

[0017] A ball abutting member is fixedly connected to the side of the thread hooking needle close to the abutting rail frame. The ball abutting member abuts against the abutting rail frame.

[0018] Further, the size adjusting assembly includes a control screw, a threaded plate, a fixing plate, an indicating plate, a plunger, a piston, a connecting column, and a size marking. A thin cavity is formed in the fixed frame at the position of the size adjusting assembly. A thick cavity is formed in the fixed frame below the thin cavity. A threaded plate is arranged on the fixed frame at the thin cavity. A fixing plate is fixedly connected between the threaded plate and the fixed frame. The threaded plate corresponds to the position of the thin cavity. A control screw is threadedly connected to the threaded plate. A plunger is fixedly connected to the control screw in the thin cavity. The plunger is slidably connected in the thin cavity. An indicating plate is fixedly connected to one side of the threaded plate. The indicating plate is slidably connected to the side wall of the fixed frame. A size marking is arranged on the fixed frame at the position of the indicating plate. The cross-sectional area of the thick cavity is larger than that of the thin cavity. A piston is slidably connected in the thick cavity. A connecting column is fixedly connected to the lower side of the piston. The connecting column is slidably connected in the fixed frame;

[0019] A connecting plate is fixedly connected to the upper side of the arc panel. A middle groove is formed between the connecting plate and the arc panel. The connecting column is fixedly connected to the connecting plate. A limiting post is fixedly connected to the side of the connecting plate away from the connecting column. The limiting post is slidably connected in the fixed frame.

[0020] Further, a sliding column is fixedly connected to the side of the sliding plate close to the track frame. A sliding ball is fixedly connected to the side of the sliding column away from the sliding plate. A column groove is formed on one side of the track frame. A ball groove is formed in the track frame on the side of the column groove away from the sliding plate. The sliding column is slidably connected in the column groove, and the sliding ball is slidably connected in the ball groove.

[0021] Further, a placement groove and a needle track groove are formed in the lower side of the fixed frame, the arc needle is slidably connected in the needle track groove, side plates are fixedly connected in the placement groove, three beam position columns are fixedly connected between the side plates, and the arc needle passes through between the beam position columns.

[0022] Further, a pressing plate is fixedly connected to one side of the track frame, a sliding rod is fixedly connected to the side of the pressing plate close to the fixed frame, a spring is sleeved on the sliding rod, and a baffle is fixedly connected to the fixed frame at the position of the pressing plate.

[0023] Further, a needle abutting groove matching the trajectory of the arc needle is formed in the fixed frame on the side close to the size adjustment assembly, and the needle abutting groove communicates with the open groove.

[0024] Further, a needle hole is formed in the arc needle on the side close to the needle tip.

[0025] Advantages of the present invention:

[0026] An ophthalmic strabismus surgery external ocular muscle and lamellar sclera anastomosis device accurately determines the distance of the arc needle trajectory under the arc panel through the size adjustment assembly, controls the thickness of the lamellar sclera entered, ensures that the ideal thickness of the lamellar sclera can be penetrated, achieves the purpose of firmly and accurately suturing the stable frontal muscle and the lamellar sclera, avoids problems such as insecure suture and muscle slippage leading to surgical failure due to the unsatisfactory suture thickness of the lamellar sclera, improves the surgical efficiency, and reduces the risks of surgical failure and intraoperative and postoperative complications.

[0027] Of course, it is not necessary for any product implementing the present invention to achieve all the above-mentioned advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention, and those of ordinary skill in the art can obtain other drawings according to these drawings without creative efforts.

[0029] Figure 1 It is a schematic diagram of the overall structure of the ophthalmic strabismus surgery external ocular muscle and lamellar sclera anastomosis device according to the embodiment of the present invention;

[0030] Figure 2 It is a schematic diagram of the structural connection of the fixed frame according to the embodiment of the present invention;

[0031] Figure 3 It is a schematic diagram of the sectional structural connection of the fixed frame according to the embodiment of the present invention;

[0032] Figure 4 It is a schematic diagram of the structures of the fixed frame, the size adjustment assembly and the thread hooking assembly according to the embodiment of the present invention;

[0033] Figure 5 Schematic structural diagram of the carriage and ball head slide column assembly according to an embodiment of the present invention;

[0034] Figure 6 Schematic sectional structure diagram of the carriage according to an embodiment of the present invention;

[0035] Figure 7 Schematic sectional structure diagram of the ball head slide column assembly according to an embodiment of the present invention;

[0036] Figure 8 Schematic structural diagram of the sectional view of the fixed frame, arc needle and side plate according to an embodiment of the present invention;

[0037] Figure 9 Schematic structural diagram of the side plate and beam position column according to an embodiment of the present invention;

[0038] Figure 10 Schematic structural diagram of the arc needle and limit block according to an embodiment of the present invention;

[0039] Figure 11 Schematic structural diagram of the movable seat according to an embodiment of the present invention;

[0040] Figure 12 Schematic structural diagram of the thread hooking assembly according to an embodiment of the present invention;

[0041] Figure 13 Schematic rear side structural diagram of the thread hooking assembly according to an embodiment of the present invention;

[0042] Figure 14 Schematic structural diagram of the partial sectional view of the fixed frame and the size adjustment assembly according to an embodiment of the present invention;

[0043] Figure 15 Schematic structural diagram of the fixed frame and the arc panel according to an embodiment of the present invention;

[0044] Figure 16 Schematic structural diagram of the arc panel and the connecting plate according to an embodiment of the present invention;

[0045] Figure 17 Schematic structural diagram of the track frame and the pressing plate according to an embodiment of the present invention;

[0046] Figure 18 Schematic partial structural diagram of the sectional view of the track frame according to an embodiment of the present invention;

[0047] Figure 19 Schematic structural diagram of the track frame, pressing plate, slide rod and spring according to an embodiment of the present invention;

[0048] Figure 20 Schematic left side structural diagram of the sectional view of the track frame according to an embodiment of the present invention;

[0049] Figure 21 This is a schematic diagram of the right - hand structure of the cross - section of the track rack according to the embodiment of the present invention.

[0050] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0051] 1 - fixed rack, 101 - vertical groove, 102 - sliding cavity, 103 - placement groove, 104 - needle track groove, 105 - needle abutment groove, 106 - open groove, 107 - thin cavity, 108 - thick cavity, 109 - baffle, 110 - ball - headed column, 111 - thin rod, 112 - groove rod, 113 - return spring, 114 - sliding rack, 115 - sliding groove, 120 - movable seat, 121 - thread - drawing needle, 122 - hook groove, 123 - abutting ball, 124 - limit post, 125 - compression spring, 126 - inclined side surface, 127 - fixed inclined block, 128 - upward - moving inclined block, 129 - downward - moving inclined block, 130 - sliding plate, 131 - rail - abutting rack, 132 - sliding column, 133 - sliding ball, 135 - arc - shaped panel, 136 - middle groove, 137 - connecting plate, 138 - limit rod, 2 - control screw, 201 - threaded plate, 202 - fixing plate, 203 - indicating plate, 204 - plunger, 205 - piston, 206 - connecting column, 209 - dimension marking, 3 - arc - shaped needle, 301 - limit block, 302 - side plate, 303 - beam - positioning column, 310 - track rack, 311 - pressing plate, 312 - sliding rod, 313 - spring, 320 - column groove, 321 - ball groove, 330 - first flat rail, 331 - second flat rail, 332 - second inclined rail, 333 - third flat rail, 334 - third inclined rail. Detailed implementation manners

[0052] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention. Embodiment

[0053] As Figure 1-21 shown

[0054] The extraocular muscle and lamellar sclera anastomosis device for ophthalmic strabismus surgery described in the present invention includes a fixed frame (1), an arc needle (3), a movable needle assembly, a size adjustment assembly, and a thread-hooking assembly. The arc needle (3) is slidably connected within the fixed frame (1), and the lower trajectory of the arc needle (3) is lower than the lower side of the fixed frame (1). The movable needle assembly is provided with a track for the reciprocating movement of the arc needle (3) within the fixed frame (1). The arc needle (3) is provided with a ball head column (110) within the fixed frame (1) that cooperates with the track. The thread-hooking assembly is provided with a cooperating thread-hooking needle (121) and a rail abutting frame (131). The rail abutting frame (131) is connected to the movable needle assembly. The track of the movable needle assembly and the ball head column (110) work in cooperation with the work of the thread-hooking needle (121) and the rail abutting frame (131) to enable the thread-hooking needle (121) to cooperate with the arc needle (3) in working; a curved panel (135) is provided on the lower side of the fixed frame (1), and the size adjustment assembly adjusts the distance between the curved panel (135) and the fixed frame (1) to change the distance by which the lower trajectory of the arc needle (3) is lower than the curved panel (135); an open slot (106) is formed in the fixed frame (1) at a position where the trajectory of the arc needle (3) is close to the thread-hooking needle (121), and the thread-hooking needle (121) is slidably connected to the open slot (106) position of the fixed frame (1).

[0055] The movable needle assembly includes a limit block (301), a sliding frame (114), and a ball head sliding column assembly. The movable needle assembly includes a track frame (310). The limit block (301) is fixedly connected to the upper end of the arc needle (3). A sliding cavity (102) is formed within the fixed frame (1), and a sliding frame (114) is slidably connected within the sliding cavity (102). A sliding slot (115) is formed within the sliding frame (114), and the limit block (301) is slidably connected within the sliding slot (115). A vertical slot (101) is formed in the fixed frame (1), and the sliding frame (114) is fixedly connected to the ball head sliding column assembly at the position of the vertical slot (101). The track frame (310) is provided with a first flat track (330), a second track, and a third track. The first flat track (330), the second track, and the third track are sequentially connected end to end to form a closed loop. The ball head sliding column assembly is slidably connected within the first flat track (330), the second track, and the third track. The movement of the first flat track (330) and the vertical slot (101) cooperate to enable the ball head sliding column assembly to slide within the vertical slot (101). The second track is a horizontal track, and the third track is a return track connecting the second track and the first flat track (330); the rail abutting frame (131) of the thread-hooking assembly cooperates with the thread-hooking needle (121) when the ball head sliding column assembly is within the second track. The thread-hooking assembly further includes a dislocation assembly that changes the cooperation relationship between the rail abutting frame (131) and the thread-hooking needle (121) when the ball head sliding column assembly enters and exits the third track.

[0056] The second track is composed of a second flat track (331) and a second inclined track (332), the third track is composed of a third flat track (333) and a third inclined track (334), the second inclined track (332) connects the second flat track (331) and the third flat track (333), one end of the second inclined track (332) is connected to the second flat track (331), the other end of the second inclined track (332) inclines towards the side close to the ball head sliding column assembly, and the end of the second inclined track (332) far from the second flat track (331) is higher than the third flat track (333); the third inclined track (334) connects the third flat track (333) and the first flat track (330), one end of the third inclined track (334) is connected to the third flat track (333), the other end of the third inclined track (334) inclines towards the side close to the ball head sliding column assembly, and the end of the third inclined track (334) far from the third flat track (333) is higher than the first flat track (330), ensuring the one-way sliding of the ball head sliding column assembly within the track frame (310); the ball head sliding column assembly includes a ball head column (110), a thin rod (111), a grooved rod (112) and a return spring (113), a thin rod (111) is fixedly connected to the front end of the ball head column (110), the thin rod (111) is slidably connected within the grooved rod (112), the grooved rod (112) is fixedly connected to the sliding frame (114), and a return spring (113) is arranged on the thin rod (111) between the ball head column (110) and the grooved rod (112), so that the ball head column (110) remains in contact with the first flat track (330), the second track and the third track;

[0057] The thread hooking assembly further includes a movable seat (120), a ball abutting member (123), a limiting post (124), a compression spring (125) and a sliding plate (130), and the dislocation assembly includes a fixed inclined block (127), an upward moving inclined block (128) and a downward moving inclined block (129). The movable seat (120) is fixedly connected to the thread hooking needle (121). A thread hooking groove (122) is formed on one side of the thread hooking needle (121) away from the arc needle (3) to capture and limit the sewing thread. The movable seat (120) is fixedly connected with a limiting post (124) at different horizontal levels of the thread hooking needle (121). The limiting post (124) is slidably connected in the fixed frame (1). A compression spring (125) is sleeved on the limiting post (124). A fixed inclined block (127) is arranged on one side of the movable seat (120), and the fixed inclined block (127) is fixedly connected to the fixed frame (1). An inclined side surface (126) is arranged on the side of the movable seat (120) close to the fixed inclined block (127). The sliding plate (130) is fixedly connected to the abutting rail frame (131). An upward moving inclined block (128) and a downward moving inclined block (129) are fixedly connected between the sliding plate (130) and the fixed inclined block (127) and the inclined side surface (126). The upward moving inclined block (128) is at the same horizontal level as the fixed inclined block (127) and the inclined side surface (126). The downward moving inclined block (129) is at a position with a vertical length distance of one upward moving inclined block (128) below the upward moving inclined block (128). The upward moving inclined block (128) cooperates with the fixed inclined block (127), and the downward moving inclined block (129) cooperates with the inclined side surface (126). A ball abutting member (123) is fixedly connected to the side of the thread hooking needle (121) close to the abutting rail frame (131), and the ball abutting member (123) abuts against the abutting rail frame (131).

[0058] The size adjustment assembly includes a control screw (2), a threaded plate (201), a fixed plate (202), an indicator plate (203), a plunger (204), a piston (205), a connecting column (206) and a size marking (209). The fixed frame (1) has a thin cavity (107) opened at the position of the size adjustment assembly. The fixed frame (1) has a thick cavity (108) opened at the lower side of the thin cavity (107). The fixed frame (1) is provided with a threaded plate (201) at the thin cavity (107). A fixed plate (202) is fixedly connected between the threaded plate (201) and the fixed frame (1). The threaded plate (201) corresponds to the position of the thin cavity (107). A control screw (2) is threadedly connected to the threaded plate (201). The control screw (2) is fixedly connected with a plunger (204) in the thin cavity (107). The plunger (204) is slidably connected in the thin cavity (107). One side of the threaded plate (201) is fixedly connected with an indicator plate (203). The indicator plate (203) is slidably connected to the side wall of the fixed frame (1). The fixed frame (1) is provided with a size marking (209) at the position of the indicator plate (203). The cross-sectional area of the thick cavity (108) is larger than that of the thin cavity (107). A piston (205) is slidably connected in the thick cavity (108). A connecting column (206) is fixedly connected to the lower side of the piston (205). The connecting column (206) is slidably connected in the fixed frame (1); A connecting plate (137) is fixedly connected to the upper side of the arc-shaped panel (135). A middle groove (136) is opened between the connecting plate (137) and the arc-shaped panel (135). The connecting column (206) is fixedly connected with the connecting plate (137). A limiting column (124) is fixedly connected to the side of the connecting plate (137) away from the connecting column (206). The limiting column (124) is slidably connected in the fixed frame (1);

[0059] One side of the sliding plate (130) close to the track frame (310) is fixedly connected with a sliding column (132). One side of the sliding column (132) away from the sliding plate (130) is fixedly connected with a sliding ball (133). A column groove (320) is opened on one side of the track frame (310). A ball groove (321) is opened on the side of the track frame (310) away from the sliding plate (130) in the column groove (320). The sliding column (132) is slidably connected in the column groove (320). The sliding ball (133) is slidably connected in the ball groove (321);

[0060] The fixed frame (1) has a placement groove (103) and a needle track groove (104) opened at the lower side of the sliding cavity (102). The arc-shaped needle (3) is slidably connected in the needle track groove (104). A side plate (302) is fixedly connected in the placement groove (103). Three beam position columns (303) are fixedly connected between the side plates (302). The arc-shaped needle (3) passes through between the beam position columns (303);

[0061] One side of the rail frame (310) is fixedly connected with a pressing plate (311). One side of the pressing plate (311) close to the fixed frame (1) is fixedly connected with a sliding rod (312). A spring (313) is sleeved on the sliding rod (312). The fixed frame (1) is fixedly connected with a baffle (109) at the position of the pressing plate (311).

[0062] The fixed frame (1) is provided with a needle abutting groove (105) matching the track of the arc needle (3) on the side close to the size adjusting component. The needle abutting groove (105) is communicated with the open groove (106).

[0063] A needle hole is opened on the arc needle (3) close to the tip of the needle.

[0064] Press the pressing plate. The rail frame cooperates with the groove rod, and the sliding frame pushes the arc needle to move. Insert the suture into the needle hole at the tip of the arc needle. Adjust the control screw to change the distance between the arc panel and the lowest end of the arc needle to meet the requirements of the operator. Release the pressing plate, press the arc panel against the position to be sutured, press the pressing plate to complete the puncture. The suture on the arc needle does not fit the arc needle in the open groove because the straight line between two points is the shortest. While pressing the pressing plate, the rail frame pulls the sliding plate. The abutting rail frame on the sliding plate cooperates with the movable seat. The position of the thread-hooking needle makes the suture located on the inclined plane of the tip of the thread-hooking needle with a hook groove. The thread-hooking needle hooks the suture. The fixed inclined block and the upward-moving inclined block cooperate to disengage the movable seat from the abutting rail frame. Release the pressing plate, and the arc needle resets. Process the suture hooked by the thread-hooking needle to complete the suture at the ideal position. The inclined side cooperates with the downward-moving inclined block to reset the sliding plate.

[0065] In summary, for an external ocular muscle and lamellar sclera anastomosis device for ophthalmic strabismus surgery in the present invention, the distance of the track of the arc needle under the arc panel is accurately determined through the size adjusting component, the thickness of the lamellar sclera entered is controlled, and it is ensured that the ideal thickness of the lamellar sclera can be penetrated, so as to achieve the purpose of firmly and accurately suturing the stable muscle and the lamellar sclera, avoiding problems such as insecure suture, muscle slippage, and choroid and retina damage caused by the unsatisfactory suture thickness of the lamellar sclera, improving the surgical efficiency, and reducing the risk of surgical failure and intraoperative and postoperative complications.

[0066] In the description of this specification, the description with reference to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0067] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. An extraocular muscle and lamellar sclera anastomosis device for ophthalmic strabismus surgery, characterized in that: It includes a fixed frame, an arc needle, a movable needle assembly, a size adjustment assembly and a thread hooking assembly. The arc needle is slidably connected inside the fixed frame, and the lower trajectory of the arc needle is lower than the lower side of the fixed frame. The movable needle assembly is provided with a track for the arc needle to reciprocate inside the fixed frame. The arc needle is provided with a ball head column inside the fixed frame that cooperates with the track. The thread hooking assembly is provided with a cooperating thread hooking needle and a rail abutting frame. The rail abutting frame is connected to the movable needle assembly. The operation of the track and the ball head column of the movable needle assembly cooperate with the operation of the thread hooking needle and the rail abutting frame; An arc panel is provided on the lower side of the fixed frame, and the size adjustment assembly adjusts the distance between the arc panel and the fixed frame; The fixed frame is provided with an open slot at a position where the trajectory of the arc needle is close to the thread hooking needle, and the thread hooking needle is slidably connected at the open slot position of the fixed frame; The movable needle assembly includes a limit block, a sliding frame, and a ball head sliding column assembly. The movable needle assembly includes a track frame. The limit block is fixedly connected to the upper end of the arc needle. A sliding cavity is opened inside the fixed frame. A sliding frame is slidably connected inside the sliding cavity. A sliding groove is opened inside the sliding frame. The limit block is slidably connected inside the sliding groove. A vertical groove is opened on the fixed frame. The sliding frame is fixedly connected with a ball head sliding column assembly at the position of the vertical groove; The ball head sliding column assembly includes a ball head column, a thin rod, a groove rod and a return spring; The size adjustment assembly includes a control screw, a threaded plate, a fixing plate, an indicator plate, a plunger, a piston, a connecting column and a size marking. The fixed frame is provided with a thin cavity at the position of the size adjustment assembly. The fixed frame is provided with a thick cavity at the lower side of the thin cavity. The fixed frame is provided with a threaded plate at the upper side of the thin cavity. The threaded plate is fixedly connected with the fixed frame by a fixing plate. The threaded plate corresponds to the position of the thin cavity. A control screw is threadedly connected to the threaded plate. The control screw is fixedly connected with a plunger inside the thin cavity. The plunger is slidably connected inside the thin cavity. An indicator plate is fixedly connected to one side of the threaded plate. The indicator plate is slidably connected to the side wall of the fixed frame. The fixed frame is provided with a size marking at the position of the indicator plate. The cross-sectional area of the thick cavity is larger than that of the thin cavity. A piston is slidably connected inside the thick cavity. A connecting column is fixedly connected to the lower side of the piston. The connecting column is slidably connected inside the fixed frame.

2. The extraocular muscle and lamellar sclera anastomosis instrument for ophthalmic strabismus surgery according to claim 1, characterized in that: The track frame is provided with a first flat track, a second track and a third track. The first flat track, the second track and the third track are sequentially connected end to end to form a closed loop. The ball head sliding column assembly is slidably connected inside the first flat track, the second track and the third track. The movement of the first flat track cooperates with the vertical groove to make the ball head sliding column assembly slide inside the vertical groove. The second track is a horizontal track. The third track is a return track connecting the second track and the first flat track; The rail abutting frame of the thread hooking assembly cooperates with the thread hooking needle when the ball head sliding column assembly is inside the second track. The thread hooking assembly further includes a dislocation assembly that changes the cooperation relationship between the rail abutting frame and the thread hooking needle when the ball head sliding column assembly enters and exits the third track.

3. The external ocular muscle and lamellar sclera anastomosis device for ophthalmic strabismus surgery according to claim 2, wherein: The second track is composed of a second flat track and a second inclined track, and the third track is composed of a third flat track and a third inclined track. The second inclined track connects the second flat track and the third flat track. One end of the second inclined track is connected to the second flat track, and the other end of the second inclined track is inclined towards the side close to the ball stud assembly. The end of the second inclined track far from the second flat track is higher than the third flat track. The third inclined track connects the third flat track and the first flat track. One end of the third inclined track is connected to the third flat track, and the other end of the third inclined track is inclined towards the side close to the ball stud assembly. The end of the third inclined track far from the third flat track is higher than the first flat track, ensuring the one-way sliding of the ball stud assembly within the track frame. A thin rod is fixedly connected to the front end of the ball stud. The thin rod is slidably connected within the groove rod, and the groove rod is fixedly connected to the sliding frame. A return spring is provided on the thin rod between the ball stud and the groove rod.

4. The extraocular muscle and lamellar sclera anastomosis instrument for ophthalmic strabismus surgery according to claim 3, characterized in that: The thread hooking assembly further includes a movable seat, a ball abutting member, a limiting post, a compression spring, and a sliding plate. The dislocation assembly includes a fixed inclined block, an upward moving inclined block, and a downward moving inclined block. The movable seat is fixedly connected to the thread hooking needle. A thread hooking groove is formed on the side of the thread hooking needle away from the arc needle. Limiting posts are fixedly connected to the movable seat at different horizontal planes of the thread hooking needle. The limiting posts are slidably connected within the fixed frame, and a compression spring is sleeved on the limiting posts. A fixed inclined block is provided on one side of the movable seat, and the fixed inclined block is fixedly connected to the fixed frame. An inclined side surface is provided on the side of the movable seat close to the fixed inclined block. The sliding plate is fixedly connected to the abutting rail frame. An upward moving inclined block and a downward moving inclined block are fixedly connected between the fixed inclined block and the inclined side surface on the sliding plate. The upward moving inclined block is at the same horizontal plane as the fixed inclined block and the inclined side surface. The downward moving inclined block is at a position one vertical length distance of the upward moving inclined block below the upward moving inclined block. The upward moving inclined block cooperates with the fixed inclined block, and the downward moving inclined block cooperates with the inclined side surface. A ball abutting member is fixedly connected to the side of the thread hooking needle close to the abutting rail frame, and the ball abutting member abuts against the abutting rail frame.

5. The extraocular muscle and lamellar sclera anastomosis instrument for ophthalmic strabismus surgery according to claim 1, characterized in that: A connecting plate is fixedly connected to the upper side of the arc panel. A middle groove is formed between the connecting plate and the arc panel. The connecting column is fixedly connected to the connecting plate. A limiting post is fixedly connected to the side of the connecting plate away from the connecting column, and the limiting post is slidably connected within the fixed frame.

6. The extraocular muscle and lamellar sclera anastomosis instrument for ophthalmic strabismus surgery according to claim 4, characterized in that: A sliding column is fixedly connected to the side of the sliding plate close to the track frame. A sliding ball is fixedly connected to the side of the sliding column away from the sliding plate. A column groove is formed on one side of the track frame, and a ball groove is formed on the side of the track frame away from the sliding plate in the column groove. The sliding column is slidably connected within the column groove, and the sliding ball is slidably connected within the ball groove.

7. The extraocular muscle and lamellar sclera anastomosis instrument for ophthalmic strabismus surgery according to claim 1, characterized in that: A placement groove and a needle rail groove are formed on the lower side of the sliding cavity of the fixed frame. The arc needle is slidably connected within the needle rail groove. Side plates are fixedly connected within the placement groove, and three beam positioning posts are fixedly connected between the side plates. The arc needle passes through between the beam positioning posts.

8. The extraocular muscle and lamellar sclera anastomosis instrument for ophthalmic strabismus surgery according to claim 6, characterized in that: A pressing plate is fixedly connected to one side of the track frame. A sliding rod is fixedly connected to the side of the pressing plate close to the fixed frame, and a spring is sleeved on the sliding rod. A baffle is fixedly connected to the fixed frame at the position of the pressing plate.

9. The external ocular muscle and lamellar sclera anastomosis instrument for ophthalmic strabismus surgery according to claim 1, characterized in that: A needle abutting groove matching the trajectory of the arc needle is formed on the side of the fixed frame close to the size adjusting assembly, and the needle abutting groove communicates with the open groove.

10. The extraocular muscle and lamellar sclera anastomosis instrument for ophthalmic strabismus surgery according to claim 1, characterized in that: A needle hole is formed on the side of the arc needle close to the needle tip.

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