An eye implant delivery device

Abstract

The present invention discloses an ocular implant delivery device, which comprises a housing, a rotating wheel, a push-needle connecting rod assembly, a retraction connecting rod assembly, a sleeve and a puncture needle, wherein a through hole is provided in the direction of the distal end of the housing, the sleeve passes through the through hole from the housing and extends to the outside of the housing, the sleeve is fixedly connected to the housing, the puncture needle passes through the sleeve, the end of the puncture needle away from the needle tip is fixedly connected to the retraction connecting rod assembly, the push needle of the push-needle connecting rod assembly passes through the inner hole of the puncture needle, the rotating wheel is connected in the housing through a rotating shaft, an opening corresponding to the rotating wheel is provided on the housing, the push-needle connecting rod assembly and the retraction connecting rod assembly are respectively movably connected to the end faces on both sides of the rotating wheel, and as the rotating wheel rotates, the push-needle connecting rod assembly can be driven to move toward the distal end of the housing or the retraction connecting rod assembly can be driven to move in the direction away from the distal end of the housing. The ocular implant delivery device of the present invention has a simple structure, a compact size, and is easy to operate, and can improve the efficiency of doctors' operations and the safety of operations.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an eye implant delivery device. Background Art

[0002] Glaucoma is a group of diseases characterized by optic atrophy and depression, visual field loss and decreased vision. Glaucoma is associated with increased intraocular pressure, usually due to the inability of the eye's drainage channels to adequately remove aqueous humor from the anterior chamber of the eye, or due to excessive production of aqueous humor caused by the ciliary body in the eye. Patients often experience symptoms such as nausea and pain. If not treated in time, it will lead to vision loss. For the treatment of glaucoma, surgical filtration methods can be used to reduce intraocular pressure by creating a fluid flow path between the anterior chamber and the low-pressure area. Ocular implants can be positioned in the eye to drain fluid from the anterior chamber to multiple locations, such as the sub-Tenon's space, subconjunctival space, suprascleral vein, suprachoroidal space, Schlemm canal and intrascleral space. Ocular implants are generally made of animal-derived / non-animal-derived polymers, metals and other materials, and are generally tubular or tubular-like. According to the different mechanisms of reducing intraocular pressure in glaucoma, the hypotensive effect of drainage of aqueous humor through the subconjunctival space, suprascleral veins and other sites is more obvious. The common surgical route is to penetrate the angle area through the anterior chamber through a micro-corneal incision, reach the subconjunctival space through the sclera; or reach the suprachoroidal space through the anterior chamber angle. This type of surgery requires a corresponding delivery mechanism for this implant to deliver the implant to the corresponding part of the eye.

[0003] The patent document with publication number CN105899170B discloses an inserter for treating glaucoma, which is used to position an intraocular shunt in the eye to treat glaucoma. The drive assembly of the inserter is a cylindrical component, which is coupled to the needle through the needle groove and coupled to the plunger through the plunger groove. The drive assembly also includes a sliding groove that overlaps with the needle groove and the plunger groove in the longitudinal direction. The sliding groove is used to couple the sliding assembly to the drive assembly. The movement of the sliding assembly on the shell drives the rotation of the cylindrical component in the longitudinal direction, so that the needle and the plunger move axially. The cylindrical component is provided with three sections of grooves, and the structural design is relatively complex. On the one hand, the rotation fit of the grooves of the cylindrical component in the longitudinal direction is too long, so that the structure is not compact enough, resulting in low precision; on the other hand, the cylindrical component cannot be integrally formed and assembled in terms of technology. The cylindrical component needs to be processed in two halves and then spliced ​​together, which will also affect the pushing accuracy; on the third hand, the friction surface of the structure is large when it moves, resulting in large dissipation of the pushing force and low pushing efficiency; therefore, it is necessary to improve the existing eye implant delivery device. Summary of the invention

[0004] The purpose of the present invention is to provide an ocular implant delivery device capable of accurately delivering the ocular implant to the subconjunctival cavity, thereby reducing the intraocular pressure of patients with high intraocular pressure, with a simple structural design and better doctor experience, in view of the problems of the existing ocular implant delivery devices described in the background technology, such as low precision, inability to be integrally formed, affecting the pushing precision during splicing, and large friction surface during pushing, resulting in large pushing force dissipation and low pushing efficiency.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: an ocular implant conveyor, which includes a shell, a rotating wheel, a push-needle connecting rod assembly, a retraction connecting rod assembly, a sleeve and a puncture needle. A through hole is provided in the direction of the distal end of the shell, and the sleeve passes through the through hole from the shell and extends to the outside of the shell. The sleeve is fixedly connected to the shell, and the puncture needle passes through the sleeve. The end of the puncture needle away from the needle tip is fixedly connected to the retraction connecting rod assembly, and the push needle of the push-needle connecting rod assembly passes through the inner hole of the puncture needle. The rotating wheel is connected to the shell through a rotating shaft, and an opening corresponding to the rotating wheel is provided on the shell. The push-needle connecting rod assembly and the retraction connecting rod assembly are respectively movably connected to the end faces on both sides of the rotating wheel, and as the rotating wheel rotates, it can drive the push-needle connecting rod assembly to move toward the distal end of the shell or drive the retraction connecting rod assembly to move in a direction away from the distal end of the shell.

[0006] As a further improvement of the above-mentioned scheme, the push-pin connecting rod assembly and the retraction connecting rod assembly are respectively movably connected to the end surfaces of both sides of the rotating wheel through a groove connecting rod shaft structure. When the rotating wheel rotates, the connecting rod shaft of the groove connecting rod shaft structure can slide with the groove as a movable trajectory, thereby driving the push-pin connecting rod assembly to move toward the far end of the shell or driving the retraction connecting rod assembly to move away from the far end of the shell.

[0007] As a further improvement of the above scheme, the groove includes two grooves, one of which is an arc-shaped groove section, and the other is a variable radius groove section, one end of the variable radius groove section is connected to one end of the arc-shaped groove section, and the distance between the center of the variable radius groove section and the arc-shaped groove section gradually decreases from the connection part of the variable radius groove section and the arc-shaped groove section toward the end of the variable radius groove section. Through this ingenious groove structure design, the setting of the movable trajectory of the connecting rod shaft is realized, the structure is highly practical and reliable, and the implant can be delivered to the eye with as few working parts as possible.

[0008] As a further improvement of the above scheme, the push-pin connecting rod assembly includes a push-pin, a push-pin connecting rod and a connecting seat, the proximal end of the push-pin is fixedly connected to the distal end of the push-pin connecting rod, the proximal end of the push-pin connecting rod is fixedly connected to the connecting seat, a connecting rod shaft or a groove is provided on the side surface of the connecting seat opposite to the rotating wheel, and a groove or a connecting rod shaft is provided on the end surface corresponding to the rotating wheel. Through this arrangement, the push-pin connecting rod can be movably connected to the rotating wheel, and the implant can be transported as the rotating wheel rotates, and the moving distance of the implant can be accurately controlled, thereby improving the accuracy of the operation.

[0009] As a further improvement of the above scheme, the retraction connecting rod assembly includes a connecting head, a retraction connecting rod and a connecting part, the connecting head is fixedly connected to the distal end of the retraction connecting rod, the connecting part is fixedly connected to the proximal end of the retraction connecting rod, a connecting rod shaft or a groove is provided on the side surface of the connecting part opposite to the rotating wheel, and a groove or a connecting rod shaft is provided on the corresponding end surface of the rotating wheel. Through this arrangement, the retraction connecting rod assembly can be connected to the rotating wheel, and the puncture needle can be retracted as the rotating wheel rotates, so as to realize the needle retraction operation after the implant is pushed, ensure the needle retraction process is linear, and improve the safety of the operation.

[0010] As a further improvement of the above solution, the proximal end of the sleeve is fixedly connected to the sleeve seat, the sleeve seat is arranged in a position close to the through hole in the shell, and the sleeve passes through the through hole on the shell and extends to the outside of the shell. Through this arrangement, the connection between the sleeve and the shell can be made more secure, and it is convenient for the puncture needle to pass through the sleeve to puncture the position where the ocular implant needs to be delivered.

[0011] As a further improvement of the above scheme, a puncture needle seat is provided at the proximal end of the puncture needle, the puncture needle and the puncture needle seat are fixedly connected, the puncture needle passes through the sleeve, and the puncture needle seat is fixedly connected to the distal end of the withdrawal connecting rod assembly. Through this arrangement, the puncture needle can be fixedly connected to the withdrawal connecting rod assembly, so that after the implantation of the eye implant is completed, the puncture needle shrinks together with the withdrawal connecting rod assembly to achieve a straight needle retraction, thereby improving the safety of the operation.

[0012] As a further improvement of the above-mentioned scheme, a first groove and an eccentric second connecting rod shaft are respectively provided on the end faces of both sides of the rotating wheel, a third connecting rod shaft corresponding to the first groove is provided at the proximal end of the push-pin connecting rod assembly, and a fourth groove corresponding to the second connecting rod shaft is provided at the proximal end of the retraction connecting rod assembly; the first groove includes a variable radius groove section and an arc-shaped groove section, and when the rotating wheel rotates toward the distal direction, the third connecting rod shaft slides from the end of the variable radius groove section of the first groove to the end of the arc-shaped groove section; the fourth groove includes an arc-shaped groove section and a variable radius groove section, and when the rotating wheel rotates toward the distal direction, the second connecting rod shaft slides from the end of the arc-shaped groove section of the fourth groove to the end of the variable radius groove section.

[0013] As a further improvement of the above-mentioned scheme, a second groove and an eccentric first connecting rod shaft are respectively provided on the end faces of both sides of the rotating wheel, a third groove corresponding to the first connecting rod shaft is provided at the proximal end of the push-pin connecting rod assembly, and a fourth connecting rod shaft corresponding to the second groove is provided at the proximal end of the retraction connecting rod assembly; the third groove includes a variable radius groove section and an arc-shaped groove section, and when the rotating wheel rotates toward the distal direction, the first connecting rod shaft slides from the end of the variable radius groove section of the third groove to the end of the arc-shaped groove section; the second groove includes an arc-shaped groove section and a variable radius groove section, and when the rotating wheel rotates toward the distal direction, the fourth connecting rod shaft slides from the end of the arc-shaped groove section of the second groove to the end of the variable radius groove section.

[0014] As a further improvement of the above-mentioned scheme, a first groove and a second groove are respectively provided on both side surfaces of the rotating wheel, and a third connecting rod shaft and a fourth connecting rod shaft corresponding to the first groove and the second groove are respectively provided on the push-pin connecting rod assembly and the retraction connecting rod assembly, and the first groove includes a variable radius groove section and an arc-shaped groove section; when the rotating wheel rotates toward the distal direction, the third connecting rod shaft slides from the end of the variable radius groove section of the first groove to the end of the arc-shaped groove section; the second groove includes an arc-shaped groove section and a variable radius groove section, and when the rotating wheel rotates toward the distal direction, the fourth connecting rod shaft slides from the end of the arc-shaped groove section of the second groove to the end of the variable radius groove section.

[0015] As a further improvement of the above-mentioned scheme, an eccentric first connecting rod shaft and a second connecting rod shaft are respectively provided on both side surfaces of the rotating wheel, and a third groove corresponding to the first connecting rod shaft is provided at the proximal end of the push-pin connecting rod assembly, the third groove includes a variable radius groove section and an arc-shaped groove section, when the rotating wheel rotates toward the distal direction, the first connecting rod shaft slides from the end of the variable radius groove section of the third groove to the end of the arc-shaped groove section; a fourth groove is provided at the proximal end of the retraction connecting rod assembly, the fourth groove includes an arc-shaped groove section and a variable radius groove section, when the rotating wheel rotates toward the distal direction, the second connecting rod shaft slides from the end of the arc-shaped groove section of the fourth groove to the end of the variable radius groove section.

[0016] As a further improvement of the above scheme, the shell comprises an upper shell and a lower shell, the upper shell and the lower shell are fixedly connected, the upper shell and the lower shell both comprise a rod, a gripping portion and a conical portion, the rod, the gripping portion and the conical portion are fixedly connected; a rotating wheel assembly seat is provided on the inner wall of the rod of the shell, and the rotating wheel is assembled on the rotating wheel assembly seat through a rotating shaft; a limiting block is provided on the inner wall surface of at least one of the rod, the gripping portion and the conical portion, and the limiting block is used to limit the push needle connecting rod assembly and the retraction connecting rod assembly in radial direction. By providing the gripping portion, it is convenient for the doctor to hold the ocular implant delivery device for surgery, by providing the rotating wheel assembly seat, it is convenient to assemble the rotating wheel, and the rotating wheel can be flexibly rotated, and by providing the limiting block in the shell, the push needle connecting rod and the retraction connecting rod can be further radially limited to prevent radial displacement, thereby improving the accuracy of the surgery.

[0017] As a further improvement of the above scheme, teeth are provided on the outer peripheral surface of the rotating wheel, an operating sleeve is provided at a position corresponding to the opening on the housing, the operating sleeve is slidably matched with the housing, and a rack part meshing with the teeth on the rotating wheel is provided on the inner wall of the operating sleeve. By providing the operating sleeve, it is convenient for the doctor to push the operating sleeve by hand to perform the operation. Compared with the scheme of directly rotating the rotating wheel to perform the operation, the flexibility and convenience of the operation of the ocular implant conveyor can be greatly improved, making the operation process more labor-saving and more efficient.

[0018] As a further improvement of the above scheme, a spring sheet is provided on the outer wall of the shell, which extends to the outside of the shell and cooperates with the rack portion on the inner wall of the operating sleeve. By providing the spring sheet, the doctor will have obvious tactile feedback when pushing the operating sleeve to perform surgery. Every time the rotating wheel moves a tooth, the spring sheet will engage with the tooth, which can effectively prevent the rotating wheel from rotating in the opposite direction due to misoperation during surgery, thereby improving the safety of the operation of the ocular implant conveyor. In addition, by providing the spring sheet, the doctor can avoid using too much force during surgery and the rotating wheel rotating too fast, which will affect the quality of the surgery, further improving the safety of the surgery.

[0019] As a further improvement of the above scheme, positioning parts are respectively provided on the push-pin connecting rod assembly and the retraction connecting rod assembly, and positioning holes are provided on the positioning parts. Positions corresponding to the positioning holes are provided on the housing, and positioning plugs are provided in the positioning holes. Through this arrangement, the retraction connecting rod assembly and the push-pin connecting rod assembly inside the eye implant conveyor can be protected, so that they will not produce relative displacement before the eye implant surgery, and the moving distance accuracy of the eye implant during the surgery is guaranteed, the accuracy of the surgery is ensured, and the quality of the surgery is improved.

[0020] It should be noted that the distal end mentioned above refers to the end away from the doctor during eye implant surgery, and the proximal end refers to the end closer to the doctor during eye implant surgery, or it can be interpreted that the distal end refers to the end close to the patient's eye that needs surgery, and the proximal end is the end away from the patient's eye.

[0021] The present invention has positive effects: 1) The ocular implant delivery device of the present invention ingeniously realizes the delivery of the implant and the retraction of the puncture needle through the unidirectional rotation of the rotating wheel through the rotating wheel, the needle pushing connecting rod mechanism, the retraction connecting rod mechanism and the connecting rod shaft groove mechanism, which can greatly reduce the volume of the ocular implant delivery device, and can make the push needle move in a straight line during the operation to improve the quality of the operation, and can retract the puncture needle in a straight line after the ocular implant delivery is completed to improve the safety of the operation; 2) The ocular implant delivery device of the present invention has a simple structure, a small volume, and is easy to operate, which can improve the efficiency of the doctor's operation and the safety of the operation; 3) The ocular implant delivery device of the present invention, the rotating wheel is connected to the shell through the rotating shaft, the gap between the rotating wheel and the shell is small, and the structural design is more compact. The present invention can realize the implantation operation of the ocular implant through the rotation of the rotating wheel, the friction force is extremely small, there is basically no loss of pushing force, the operation operation is more labor-saving, and the system stability and reliability are higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of the structure of the ocular implant delivery device according to Example 1 of the present invention.

[0023] Figure 2 Schematic diagram of the disassembled structure of the ocular implant conveyor according to Example 1 of the present invention (the direction of the arrow is the rotation direction of the rotating wheel).

[0024] Figure 3 Schematic diagram of the groove structure on the side of the rotating wheel opposite to the retraction connecting rod in Example 1 (the direction of the arrow is the rotation direction of the rotating wheel).

[0025] Figure 4 This is a schematic diagram of the groove structure on the side opposite to the rotating wheel and the push-pin connecting rod in Example 1 (the direction of the arrow is the direction of the activity trajectory of the third connecting rod shaft in the first groove).

[0026] Figure 5 This is a schematic diagram of the structure of the push-pin connecting rod in Example 1.

[0027] Figure 6 This is a schematic diagram of the structure of the retractable connecting rod in Example 1 (the direction of the arrow is the direction of the activity trajectory of the second connecting rod shaft in the fourth groove).

[0028] Figure 7 This is a schematic diagram of the structure of the lower shell in Example 1.

[0029] Figure 8 Schematic diagram of the cross-sectional view of the internal structure of the shell of Example 1.

[0030] Fig. 9 for Figure 8 Schematic diagram of the assembly structure of the cannula, puncture needle, eye implant and push needle.

[0031] Fig.10 Schematic diagram of the starting state of the second connecting rod shaft on the rotating wheel in the fourth groove on the retracting connecting rod in Example 1 (the direction of the arrow is the direction of the activity trajectory of the second connecting rod shaft in the fourth groove).

[0032] Fig.11 Schematic diagram of the state of the second connecting rod shaft on the rotating wheel sliding in the fourth groove on the retracting connecting rod in the arc-shaped groove section in Example 1 (the direction of the arrow is the direction of the activity trajectory of the second connecting rod shaft in the fourth groove).

[0033] Fig.12 Schematic diagram of the state in which the second connecting rod shaft on the rotating wheel in Example 1 slides in the fourth groove on the retracting connecting rod to the variable radius groove section (the direction of the arrow is the direction of the activity trajectory of the second connecting rod shaft in the fourth groove).

[0034] Fig.13 Schematic diagram of the disassembled structure of the ocular implant conveyor of Example 2 (the direction of the arrow is the rotation direction of the rotating wheel).

[0035] Fig.14 This is a schematic structural diagram of the end surface of one side of the rotating wheel facing the retracting connecting rod in Example 2 (the direction of the arrow is the direction of the sliding track of the fourth connecting rod shaft in the second groove).

[0036] Fig.15 This is a schematic structural diagram of the end surface of one side of the rotating wheel facing the push-pin connecting rod in Example 2 (the direction of the arrow is the direction of the sliding track of the third connecting rod shaft in the first groove).

[0037] Fig.16 This is a schematic diagram of the assembly structure of the rotating wheel, the retraction connecting rod and the push-pin connecting rod in Example 3 (the direction of the arrow is the rotation direction of the rotating wheel).

[0038] Fig.17 This is a schematic diagram of the structure of the retractable connecting rod in Example 3 (the direction of the arrow is the direction of the sliding track of the second connecting rod shaft in the fourth groove).

[0039] Fig.18 This is a schematic diagram of the structure of the push-pin connecting rod in Example 3 (the direction of the arrow is the direction of the sliding track of the first connecting rod shaft in the third groove).

[0040] Fig.19 Schematic diagram of the structure of the ocular implant delivery device of Example 4.

[0041] Fig. 20 This is a schematic diagram of the assembly structure of the operating sleeve, rotating wheel and shrapnel of the ocular implant conveyor of Example 4.

[0042] In the figure, the housing 1, the rod 11, the gripping portion 12, the conical portion 13, the through hole 14, the opening 15, the stopper 16, the rotating wheel assembly seat 17, the sleeve 2, the puncture needle 3, the puncture needle seat 31, the rotating wheel 4, the first groove 41, the arc-shaped groove section 411, the variable radius groove section 412, the transition section 413, the second groove 42, the first connecting rod shaft 43, the second connecting rod shaft 44, the rotating shaft 45, the teeth 46, the push needle connecting rod assembly 5, the push needle 51, the push needle connecting rod 52, the angled portion 521, the connecting seat 53, The third connecting rod shaft 54, the third groove 55, the arc-shaped groove section 551, the variable radius groove section 552, the transition section 553, the positioning hole 56, the withdrawal connecting rod assembly 6, the connecting head 61, the withdrawal connecting rod 62, the angled portion 621, the connecting portion 63, the limit seat 64, the fourth connecting rod shaft 65, the fourth groove 66, the arc-shaped groove section 661, the variable radius groove section 662, the transition section 663, the positioning hole 67, the operating sleeve 7, the rack 71, the spring piece 72, the implant 8, the plug 81, and the positioning rod 9. DETAILED DESCRIPTION

[0043] The technical scheme of the present invention is clearly and completely described below through embodiments. Obviously, the described embodiments are only 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 ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] Example 1

[0045] like Figure 1-12 An ocular implant delivery device shown includes a housing 1 , a rotating wheel 4 , a needle-pushing connecting rod assembly 5 , a withdrawing connecting rod assembly 6 , a sleeve 2 and a puncture needle 3 .

[0046] The housing 1 is a split molded part, and the structure of the housing 1 can be selected in many ways, for example, Figure 2 As shown, the housing is divided into an upper housing and a lower housing from the proximal end to the distal end, and the upper housing and the lower housing can be fixedly connected by glue, buckle, or bolt. Another solution is that the housing is divided into two parts along the longitudinal direction, and the two parts are connected by threaded connection, buckle connection, glue fixing connection, etc.

[0047] The following is an example of the structure shown in the accompanying drawings. The housing 1 includes an upper housing and a lower housing, which are fixedly connected. The upper housing and the lower housing are respectively a rod 11, a gripping portion 12 and a conical portion 13 from the proximal end to the distal end. The rod 11, the gripping portion 12 and the conical portion 13 are fixedly connected or integrally formed. A through hole 14 for connecting the sleeve 2 is provided in the conical portion 13. The provision of the gripping portion 12 facilitates the doctor to hold the ocular implant delivery device during surgery, and the specific shape of the housing can also be adjusted and designed according to the convenience of operation.

[0048] like Figure 7 As shown, a rotating wheel assembly seat 17 is provided on the inner wall surface of the rod portion of the housing 1, and the rotating wheel 4 is assembled on the rotating wheel assembly seat 17 through a rotating shaft. The rotating wheel assembly seat 17 is provided to facilitate the assembly of the rotating wheel 4 and enable the rotating wheel 4 to rotate flexibly.

[0049] An opening 15 is provided on the housing 1 at a position corresponding to the rotating wheel 4, so that the doctor or other surgical operator can operate the surgical procedure by rotating the rotating wheel at the opening 15. As an alternative, the outer circumference of the rotating wheel can be partially protruded from the opening or aligned with the opening of the housing.

[0050] Inside the housing 1, a limit block 16 is provided on the inner wall surface of at least one of the rod portion 11, the grip portion 12 and the conical portion 13, and the limit block 16 is used to limit the radial position of the push-needle connecting rod assembly 5 and the retraction connecting rod assembly 6. By providing sufficient limit on the housing 1, the retraction connecting rod 62 and the push-needle connecting rod 52 can be prevented from being deviated radially in the housing 1, thereby improving the accuracy of the surgery.

[0051] Combination Figure 8 and Fig. 9 As shown, a sleeve 2 is provided at the distal end of the housing 1. The sleeve 2 is a hollow tubular object, which is fixedly connected to the distal through hole 14 of the housing 1 by gluing or injection molding or other clamping mechanisms. The function is to protect the needle tube of the puncture needle 3 and to support the trabecular meshwork tissue when the puncture needle 3 enters the subconjunctival cavity during the operation, thereby limiting the insertion length of the puncture needle.

[0052] As a more preferred embodiment, a sleeve seat is provided at the proximal end of the sleeve 2, and the sleeve 2 is fixedly connected to the sleeve seat by gluing or injection molding. The sleeve seat is arranged in a position near the through hole 14 in the housing 1, and the sleeve 2 is fixedly connected to the housing 1, and the connection method can be a fixed connection method such as gluing, injection molding or clamping. The puncture needle 3 is a needle with a hollow cylindrical structure, and its material can be a material specified in the medical field, and an oblique opening is provided at the needle tip of the puncture needle 3. The puncture needle 3 passes through the hole of the sleeve 2, and the puncture needle 3 and the inner wall of the sleeve 2 are gap-matched, so that the puncture needle 3 can pass freely in the sleeve 2. The puncture needle 3 can be directly fixedly connected to the distal end of the withdrawal connecting rod assembly 6, or the puncture needle 3 can be fixedly connected to the puncture needle seat 31 by gluing or injection molding, or other clamping mechanisms, and the puncture needle seat 31 is then fixedly connected to the withdrawal connecting rod assembly 6.

[0053] The puncture needle 3 can pass through the hollow hole of the cannula 2 and extend to the outer side of the distal end of the cannula 2. The oblique opening of the puncture needle 3 completely exposes a distance of the cannula 2, thereby controlling the depth of the puncture needle 3 penetrating into the conjunctiva of the eye. The puncture needle 3 and the puncture needle seat 31 are limited in the internal space composed of the upper and lower shells, and can only be withdrawn, and cannot move toward the distal end.

[0054] The implant 8 can be a tubular object made of a flexible material, and the tubular inner cavity of the implant 8 forms an aqueous humor outflow channel. The implant 8 has a certain arch along the axial direction. Before the operation, the implant 8 is placed in the inner cavity of the puncture needle 3 and is pushed to the far end of the needle. A certain friction force is generated between the outer wall of the implant 8 and the inner wall of the puncture needle 3, which can stabilize the position of the implant 8 in the hole of the puncture needle 3.

[0055] The push-pin connecting rod assembly 5 includes a push-pin 51, a push-pin connecting rod 52 and a connecting seat 53. The proximal end of the push-pin 51 is fixedly connected to the distal end of the push-pin connecting rod 52. The proximal end of the push-pin connecting rod 52 is fixedly connected to the connecting seat 53. A third connecting rod shaft 54 ​​or a third groove 55 is provided on the side surface of the connecting seat 53 opposite to the rotating wheel 4. The push-pin connecting rod is movably connected to the rotating wheel 4 through a groove connecting rod shaft mechanism. In order to reduce the distance between the push-pin connecting rod 52 and the withdrawal connecting rod 62 and make the internal structure of the ocular implant conveyor more compact, a folded angle portion 521 is provided at the connection portion between the push-pin connecting rod 52 and the connecting seat 53. By setting the folded angle, the connecting seat 53 can be connected to the side of the rotating wheel 4, and the push-pin connecting rod 52 can be set at the distal end of the rotating wheel 4.

[0056] The push needle 51 is connected to the distal end of the push needle connecting rod by gluing or injection molding, or other clamping mechanisms. The distal end of the push needle 51 passes through the hollow hole of the puncture needle 3. With the movement of the push needle connecting rod mechanism 5, the push needle 51 can move toward the distal end of the puncture needle 3 and push the implant 8 installed in the puncture needle 3 into the puncture site of the patient's eye. With the movement of the push needle 51, the implant 8 is pushed to the patient's intraocular subconjunctival cavity. The tubular inner cavity of the implant 8 forms an aqueous humor outflow channel to discharge the aqueous humor in the eye, thereby achieving the purpose of treatment.

[0057] The withdrawal link assembly 6 includes a connector 61, a withdrawal link 62 and a connecting portion 63. The connector 61 is fixedly connected to the distal end of the withdrawal link 62. The connecting portion 63 is fixedly connected to the proximal end of the withdrawal link 62. A fourth link shaft 65 or a fourth groove 66 is provided on a side surface of the connecting portion 63 opposite to the rotating wheel 4. The withdrawal link 62 is movably connected to the rotating wheel 4 through a groove link shaft mechanism. In order to reduce the distance between the push-pin link 52 and the withdrawal link 62 and make the internal structure of the ocular implant conveyor more compact, a folded angle portion 621 is provided at the connection portion between the withdrawal link 62 and the connecting portion 63. By setting the folded angle, the connecting portion 63 can be connected to the side of the rotating wheel 4, and the withdrawal link 62 can be set at the distal end of the rotating wheel. A limit seat 64 is provided on the retracting connecting rod, and the push pin connecting rod 62 passes through the limit seat 64, so that the two form an integral structure. It can be understood that in other application scenarios, a limit seat can also be provided on the push pin connecting rod 62, so that the retracting connecting rod passes through the limit seat on the push pin connecting rod and forms an integral structure with the push pin connecting rod. This integral structure design makes space utilization high and the internal structure more compact.

[0058] As a more preferred embodiment, positioning parts are provided on the push needle connecting rod 52 and the withdrawal connecting rod 62, and the positioning parts are provided with positioning holes 56 and 67 facing each other. Positions corresponding to the positioning holes are provided on the housing 1, and positioning plugs 9 are provided in the positioning holes. Through this arrangement, the withdrawal connecting rod assembly 6 and the push needle connecting rod assembly 5 inside the eye implant conveyor can be protected, so that they will not produce relative displacement before the eye implant surgery, and the moving distance accuracy of the eye implant during the surgery is guaranteed, the accuracy of the surgery is ensured, and the quality of the surgery is improved.

[0059] In the above scheme, the connection mode of the push-pin connecting rod mechanism 5 and the retracting connecting rod mechanism 6 with the rotating wheel 4 can be that the groove is set on the side of the rotating wheel and the connecting rod shaft is set on the push-pin connecting rod 52 and the retracting connecting rod 62, or the groove is set at the proximal end of the push-pin connecting rod 52 or the retracting connecting rod 62, and eccentric connecting rod shafts are respectively set on the two sides of the rotating wheel 4, or the groove is set on one side of the rotating wheel 4 and the connecting rod shaft is set on the other side, and the proximal end of the push-pin connecting rod 52 and the retracting connecting rod 62 is provided with a connecting rod shaft and the groove is set on one of them. Therefore, there may be multiple permutations and combinations of implementation schemes.

[0060] As a first embodiment, a third connecting rod shaft 54 ​​is provided at the proximal end of the push-pin connecting rod 52, a fourth groove 66 is provided at the proximal end of the retraction connecting rod 62, and a first groove 41 is provided on the end face of the rotating wheel 4 opposite to the push-pin connecting rod 52, and an eccentric second connecting rod shaft 44 is provided on the end face of the rotating wheel 4 opposite to the retraction connecting rod 62.

[0061] like Figure 4 As shown, the first groove 41 provided on the runner 4 includes a variable radius groove section 412 and an arc-shaped groove section 411. The center of the arc-shaped groove section 411 coincides with the center of the runner 4. The two groove sections are connected. The variable radius groove section 412 can be selected from a variety of shapes, such as an involute groove section. When the runner 4 rotates toward the far end, as shown in FIG. Figure 4 As shown in the direction of the middle arrow, the third connecting rod shaft 54 ​​on the push-pin connecting rod 52 slides from the end of the variable radius groove section 412 toward the end of the arc-shaped groove section 411. In the variable radius groove section 412, the distance between the third connecting rod shaft 54 ​​and the rotating shaft 45 of the rotating wheel 4 gradually increases, and then enters the arc-shaped groove section 41, and the distance between the connecting rod shaft 54 ​​and the rotating shaft 45 of the rotating wheel 4 remains unchanged.

[0062] like Figure 6 As shown, the fourth groove 66 disposed at the proximal end of the retracting connecting rod 62 includes an arc-shaped groove section 661 and a variable radius groove section 662, and the two groove sections are connected. The variable radius groove section 662 can be selected from a variety of shapes, for example, an arc groove with a shape similar to an involute. When the rotating wheel 4 rotates toward the distal end, as shown in FIG. Figure 6 As shown in the direction of the arrow, the second connecting rod shaft 44 on the runner 4 slides from the end of the arc-shaped groove segment 661 of the fourth groove 66 toward the end of the variable-radius groove segment 662, and in the arc-shaped groove segment 661, the distance between the second connecting rod shaft 44 and the center of the arc-shaped groove segment 661 remains unchanged, and then enters the variable-radius groove segment 662, and the distance between the second connecting rod shaft 44 and the center of the arc-shaped groove segment 661 gradually decreases.

[0063] When the ocular implant delivery device of this embodiment is used, the delivery operation of the ocular implant and the needle retraction operation of the puncture needle can be completed by rotating the rotating wheel 4, thereby completing the ocular implant surgery with high precision.

[0064] The specific process is as follows: in the initial state, the third connecting rod shaft 54 ​​on the push-pin connecting rod assembly 5 is located at the end of the variable radius groove section 412 of the first groove 41 on the corresponding end face of the rotating wheel 4, and the eccentric second connecting rod shaft 44 on the end face of the other side of the rotating wheel 4 is located at the end of the arc groove section 661 of the fourth groove 66 at the far end of the withdrawal connecting rod 62. Moreover, the positioning holes 56 and 67 of the positioning parts of the push-pin connecting rod assembly 5 and the withdrawal connecting rod assembly 6 are just opposite to each other and face the positioning through hole on the housing 1. The positioning rod 9 passes through the positioning through hole on the housing, and the positioning holes 56 and 67 on the push-pin connecting rod assembly 5 and the withdrawal connecting rod assembly 6 in sequence from the outside to the inside, so that the ocular implant conveyor is in a locked state.

[0065] The implant 8 will be pre-installed in the inner hole of the puncture needle 3, against the push needle 51 of the push needle connecting rod assembly 5, and the distal end of the implant 8 is limited by a plug 81 to prevent the implant 8 from falling. Before implantation, the positioning rod 9 and the plug 81 are pulled out to unlock the ocular implant delivery device, and then the puncture needle 3 is used to puncture the surgical site of the patient. Because the length of the puncture needle 3 leaking out of the cannula 2 is fixed, the cannula 2 can limit the puncture depth of the puncture needle 3. After the puncture is completed, the implantation operation begins.

[0066] In the first stage Figure 2 As shown in the direction of the arrow, the wheel 4 is rotated toward the far end, as shown in the direction of the arrow. Figure 4 As shown in the direction of the arrow, the third connecting rod shaft 54 ​​on the push-needle connecting rod 52 slides from the end of the variable-radius groove section 412 of the first groove 41 on the rotating wheel 4 toward the direction of the arc-shaped groove section 411. During this process, the distance between the third connecting rod shaft 54 ​​on the push-needle connecting rod 52 and the rotating shaft 45 of the rotating wheel 4 gradually increases, and the push-needle connecting rod 52 is radially limited in the shell 1, so that the push-needle connecting rod 52 can only move toward the distal end of the shell 1, driving the push-needle 51 to move toward the distal end, and pushing the implant 8 through the puncture hole to reach the patient's intraocular subconjunctival cavity; at the same time, as shown in FIG. Figure 10-12 As shown in the direction of the arrow in FIG, the second connecting rod shaft 44 on the other side of the rotating wheel 4 slides in the arc-shaped groove section 661 of the fourth groove 66 at the proximal end of the withdrawal connecting rod 62. Since the contact arc radius remains unchanged, there is no axial force between the second connecting rod shaft 44 and the fourth groove 66, and the withdrawal connecting rod assembly 6 will not move in the axial direction.

[0067] When the wheel 4 continues to rotate in the same direction to enter the second stage, the third connecting rod shaft 54 ​​on the push-pin connecting rod 52 enters the arc-shaped groove section 411 of the first groove 41. Since the distance between the arc-shaped groove section 411 and the center of the wheel 4 remains unchanged, the push-pin connecting rod 52 no longer moves when the wheel 4 is rotated. Figure 11-Figure 12 As shown, the second connecting rod shaft 44 on the rotating wheel 4 enters the variable radius groove section 662 of the fourth groove 66 on the withdrawal connecting rod 62. Because the distance from the center of the circular arc groove section 661 is constantly decreasing when the second connecting rod shaft 44 moves from the circular arc groove section 661 to the end of the variable radius groove section 662, the withdrawal connecting rod 62 can be driven to move toward the proximal direction. Because a limit block 16 is provided in the shell 1, the radial movement of the withdrawal connecting rod 62 can be limited, so that it can only move along the axial direction of the shell 1 toward the proximal direction, driving the puncture needle 3 to move into the sleeve 2 to complete the needle retraction operation.

[0068] At this point, the process of delivering the implant 8 to a specific position in the eye is completed. For operators such as doctors, they only need to operate the rotating wheel 4 to complete the implant delivery process, which is simple and easy.

[0069] As a more preferred implementation scheme of this embodiment, in the first groove 41 on the rotating wheel 4 corresponding to the push needle connecting rod assembly 5, a transition section 413 is provided between the variable radius groove section 412 and the arc-shaped groove section 411, and the transition section 413 can be selected as an arc-shaped transition section; in the fourth groove 66 arranged at the proximal end of the withdrawal connecting rod 62, a transition section 663 is provided between the arc-shaped groove section 661 and the variable radius groove section 662, and the transition section 663 can be selected as an arc-shaped transition section. By providing the transition section 413 between the variable radius groove section 412 and the arc-shaped groove section 411 of the first groove 41, when transitioning from the aforementioned first stage to the second stage, after the connecting rod shaft 54 ​​on the push needle connecting rod 52 ends the movement of the variable radius groove section 42 and enters the transition section 43, obvious thrust feedback will appear, and the user will feel that the implant pushing has ended, and can have a clear perception of the surgical process, which is convenient for the subsequent needle withdrawal operation. Similarly, by setting a transition section 68 between the arc-shaped groove section 66 and the variable-radius groove section 67 in the groove at the proximal end of the withdrawal connecting rod 62, when transitioning from the aforementioned first stage to the second stage, after the connecting rod shaft 45 on the rotating wheel 4 completes the movement of the arc-shaped groove section 66 on the withdrawal connecting rod 62 and enters the transition section 68, there will be obvious thrust feedback, and the user will feel that the pushing of the implant has been completed. According to the status of the operation, the user can decide whether to retract the puncture needle 3 into the sleeve 2 through the withdrawal connecting rod mechanism 6 to end the eye implant surgery.

[0070] As another variation of this embodiment, a connecting rod shaft 54 ​​can be provided on the end surface of the rotating wheel 4 opposite to the push-pin connecting rod 52, and a groove can be provided on the end surface opposite to the retracting connecting rod 62. Correspondingly, a groove can be provided on the push-pin connecting rod 52, and a connecting rod shaft 65 can be provided on the retracting connecting rod 62. The working principle of this solution is similar to the working principle described above, and the technical effect achieved is also the same, which will not be described in detail here.

[0071] Example 2

[0072] like Figure 13-15 As shown, as a second embodiment, a first groove 41 and a second groove 42 are respectively provided on both side surfaces of the rotating wheel 4, and a third connecting rod shaft 54 ​​and a fourth connecting rod shaft 65 corresponding to the grooves are provided on the push-pin connecting rod assembly 5 and the retracting connecting rod assembly 6.

[0073] The first groove on the rotating wheel 4 corresponding to the third connecting rod shaft 54 ​​on the push-pin connecting rod assembly 5 includes a variable radius groove section 412 and an arc groove 411, and the center of the arc groove section 411 coincides with the center of the rotating wheel 4; the variable radius groove section 412 is connected to the arc groove section 411, and when the rotating wheel 4 rotates toward the far end, the third connecting rod shaft 54 ​​on the push-pin connecting rod 52 slides from the end of the variable radius groove section 412 of the first groove 41 toward the end of the arc groove section 411, and in the variable radius groove section 412, the distance between the third connecting rod shaft 54 ​​and the rotating shaft 45 of the rotating wheel 4 gradually increases, and then enters the arc groove section 411, and the distance between the third connecting rod shaft 54 ​​and the rotating shaft 45 of the rotating wheel 4 remains unchanged.

[0074] The second groove on the rotating wheel 4 corresponding to the fourth connecting rod shaft 65 of the retraction connecting rod assembly 6 includes an arc-shaped groove section 421 and a variable radius groove section 422. The shape of the variable radius groove section 422 can be selected in a variety of ways. For example, an arc-shaped groove with an approximately involute shape can be selected. The arc-shaped groove section 421 is connected to the variable radius groove section 422. When the rotating wheel 4 rotates toward the far end, the fourth connecting rod shaft 65 on the retraction connecting rod assembly 6 slides from the end of the arc-shaped groove section 421 of the second groove 42 toward the end of the variable radius groove section 422. In the arc-shaped groove section 421, the distance between the fourth connecting rod shaft 65 and the rotating shaft 45 of the rotating wheel 4 remains unchanged, and then enters the variable radius groove section 422, and the distance between the fourth connecting rod shaft 65 and the rotating shaft 45 of the rotating wheel 4 gradually decreases.

[0075] like Fig.13As shown, the ocular implant delivery device of this embodiment can complete the delivery operation of the ocular implant and the needle retracting operation of the puncture needle by rotating the rotating wheel 4 when in use, and complete the ocular implant surgery with high precision. The specific process is that in the initial state, the third connecting rod shaft 54 ​​on the needle pusher connecting rod 52 is located at the end of the variable radius groove section 412 of the first groove 41 on the corresponding end face of the rotating wheel 4, and the fourth connecting rod shaft 65 on the withdrawal connecting rod 62 is located at the end of the arc groove section 421 of the second groove 42 on the corresponding end face of the rotating wheel 4. Moreover, the positioning holes 56 and 67 of the positioning parts of the needle pusher connecting rod assembly 5 and the withdrawal connecting rod assembly 6 are just opposite to each other and face the positioning through hole on the housing 1. The positioning rod 9 passes through the positioning through hole on the housing, and the positioning holes 56 and 67 on the needle pusher connecting rod assembly and the withdrawal connecting rod assembly from the outside to the inside, so that the ocular implant delivery device is in a locked state.

[0076] The implant 8 will be pre-installed into the inner hole of the puncture needle 3, against the push needle 51 of the push needle connecting rod assembly 5, and the distal end of the implant 8 is limited by a plug 81 to prevent the implant 81 from falling. Before implantation, the positioning rod 9 and the plug 81 are pulled out to unlock the ocular implant delivery device, and then the puncture needle 3 is used to puncture the surgical site of the patient. Because the length of the puncture needle 3 leaking out of the sleeve 2 is fixed, the sleeve 2 can limit the puncture depth of the puncture needle 3. After the puncture is completed, the rotating wheel 4 is rotated toward the distal direction. When the rotating wheel 4 rotates, in the first stage, as shown in FIG. Fig.15 As shown in the direction of the arrow, the third connecting rod shaft 54 ​​on the push-needle connecting rod 5 slides from the end of the variable radius groove section 412 of the first groove 41 toward the direction of the arc-shaped groove section 411. During this process, the distance between the third connecting rod shaft 54 ​​on the push-needle connecting rod 52 and the center of the rotating wheel 4 gradually increases, and the push-needle connecting rod 52 is radially limited in the housing 1, so that the push-needle connecting rod 52 can only move toward the distal end of the housing 1, driving the push-needle 51 to move toward the distal end, and pushing the eye implant through the puncture hole 3 to reach the patient's intraocular subconjunctival cavity. At the same time, as Fig.14 As shown in the direction of the arrow, the fourth connecting rod shaft 65 on the retracting connecting rod 62 slides in the arc-shaped groove section 421 of the second groove 42 on the other side end surface of the rotating wheel 4, and the distance between the fourth connecting rod shaft 65 and the center of the rotating wheel 4 remains unchanged, so the retracting connecting rod 62 will not move.

[0077] Continue to rotate the rotating wheel 4 in the same direction to enter the second stage, the third connecting rod shaft 45 on the needle-pushing connecting rod 52 enters the arc-shaped groove section 411 of the first groove 41 on the rotating wheel 4, because the distance between the arc-shaped groove section 411 and the center of the rotating wheel 4 remains unchanged, and the needle-pushing connecting rod 52 no longer moves when the rotating wheel 4 is rotated; at the same time, the fourth connecting rod shaft 65 on the withdrawal connecting rod 62 enters the variable-radius groove section 422 of the second groove 42, because when the fourth connecting rod shaft 65 moves from the arc-shaped groove section 421 to the end of the variable-radius groove section 422, the distance from the rotating shaft 45 of the rotating wheel 4 is constantly decreasing, and thus the withdrawal connecting rod 62 can be driven to move toward the proximal direction, and because a limit block 16 is provided in the shell 1, the radial movement of the withdrawal connecting rod 62 can be limited, so that it can only move along the axial direction of the shell 1 toward the proximal direction, driving the puncture needle 3 to move into the sleeve 2, and completing the needle retracting operation.

[0078] At this point, the process of delivering the implant 8 to a specific position in the eye is completed.

[0079] As a more preferred implementation scheme of this embodiment, in the first groove 41 on the rotating wheel 4 corresponding to the push needle connecting rod assembly 5, a transition section 413 is provided between the variable radius groove section 412 and the arc-shaped groove section 411, and the transition section 413 can be selected as an arc-shaped transition section; in the second groove 42 on the rotating wheel 4 corresponding to the withdrawal connecting rod assembly 6, a transition section 423 is provided between the arc-shaped groove section 421 and the variable radius groove section 422, and the transition section 423 can be selected as an arc-shaped transition section. By providing a transition section between the variable radius groove section 412 and the arc-shaped groove section 411 of the first groove 41, when transitioning from the aforementioned first stage to the second stage, after the third connecting rod shaft 54 ​​on the push needle connecting rod 52 ends the movement of the variable radius groove section 412 and enters the transition section, obvious thrust feedback will appear, and the user will feel that the implant pushing has ended, and can have a clear perception of the surgical process, which is convenient for the subsequent needle withdrawal operation. Similarly, by setting a transition section 423 between the arc-shaped groove section 421 and the variable-radius groove section 422 of the second groove 42, when transitioning from the aforementioned first stage to the second stage, after the fourth connecting rod shaft 65 on the retracting connecting rod 62 completes the movement of the arc-shaped groove section 421 and enters the transition section 423, there will be obvious thrust feedback, and the user will feel that the pushing of the implant has been completed. According to the status of the operation, the user can decide whether to retract the puncture needle 3 into the sleeve 2 by retracting the connecting rod assembly 6 to end the eye implant surgery.

[0080] Example 3

[0081] like Figure 16-18As shown, as a third implementation scheme, different from the above embodiments, an eccentric first connecting rod shaft 43 and a second connecting rod shaft 44 are respectively provided on both side surfaces of the rotating wheel 4, and a third groove 55 and a fourth groove 66 are respectively provided at the proximal ends of the push-pin connecting rod 52 and the retraction connecting rod 62.

[0082] The third groove 55 disposed at the proximal end of the push-pin connecting rod 52 includes a variable radius groove section 552 and an arc groove 551; the variable radius groove section 552 is connected to the arc groove section 551. When the rotating wheel 4 rotates toward the distal end, the first connecting rod shaft 43 on the rotating wheel 4 slides from the end of the variable radius groove section 552 toward the end of the arc groove section 551. In the variable radius groove section 552, the distance between the first connecting rod shaft 43 and the center of the arc groove section 551 gradually increases, and then enters the arc groove section 551, and the distance between the first connecting rod shaft 43 and the center of the arc groove section 551 remains unchanged.

[0083] The fourth groove 66 arranged at the near end of the withdrawal connecting rod 62 includes a circular arc groove section 661 and a variable radius groove section 662, and the two groove sections are connected. The variable radius groove section 662 can be selected from groove sections of various shapes, for example, an arc groove of an approximately involute shape can be selected. When the runner 4 rotates toward the far end, the second connecting rod shaft 44 on the runner 4 slides from the end of the circular arc groove section 661 of the fourth groove 66 toward the direction of the end of the variable radius groove section 662, and in the circular arc groove section 661, the distance between the second connecting rod shaft 44 and the center of the circle of the circular arc groove section 661 remains unchanged, and then enters the variable radius groove section 662, and the distance between the second connecting rod shaft 44 and the center of the circle of the circular arc groove section 661 gradually decreases.

[0084] The ocular implant delivery device of this embodiment, when in use, Fig.16 As shown, the eye implant delivery operation and the puncture needle retraction operation can be completed by rotating the rotating wheel 4, and the eye implant surgery can be completed with high precision. The specific process is that in the initial state, the third connecting rod shaft 54 ​​on the push needle connecting rod 52 is located at the end of the variable radius groove section 412 of the first groove 41 on the corresponding end face of the rotating wheel 4, and the fourth connecting rod shaft 65 on the withdrawal connecting rod 62 is located at the end of the arc-shaped groove section 421 of the second groove 42 on the corresponding end face of the rotating wheel. Moreover, the positioning holes 56 and 67 of the positioning parts of the push needle connecting rod assembly 5 and the withdrawal connecting rod assembly 6 are just opposite, and are directly opposite to the positioning through hole on the housing 1. The positioning rod 9 passes through the positioning through hole on the housing, and the positioning holes 56 and 67 on the push needle connecting rod 52 and the withdrawal connecting rod 62 from the outside to the inside, so that the eye implant conveyor is in a locked state.

[0085] The implant 8 will be pre-installed in the inner hole of the puncture needle 3, against the push needle 51 of the push needle connecting rod assembly 5, and the distal end of the implant 8 is limited by a plug 81 to prevent the implant 8 from falling. Before implantation, the positioning rod 9 and the plug 81 are pulled out to unlock the ocular implant delivery device, and then the puncture needle 3 is used to puncture the surgical site of the patient. Because the length of the puncture needle leaking out of the sleeve 2 is fixed, the sleeve 2 can limit the puncture depth of the puncture needle 3. After the puncture is completed, the rotating wheel 4 is rotated toward the distal direction. When the rotating wheel 4 rotates, in the first stage, as shown in FIG. Fig.18 As shown in the direction of the arrow, the first connecting rod shaft 43 on the rotating wheel 4 corresponding to the push needle connecting rod 52 slides from the end of the variable radius groove section 552 of the third groove 55 at the proximal end of the push needle connecting rod 52 toward the direction of the arc-shaped groove section 551. During this process, the distance between the first connecting rod shaft 43 on the rotating wheel 4 and the center of the arc-shaped groove section 551 of the third groove 55 gradually increases, and the push needle connecting rod 52 is radially limited in the shell 1, so that the push needle connecting rod 52 can only move toward the distal end of the shell 1, driving the push needle 51 to move toward the distal direction, and pushing the eye implant through the puncture hole 3 to reach the patient's intraocular subconjunctival cavity. At the same time, as Fig.17 As shown in the direction of the arrow, the second connecting rod shaft 44 on the other side of the rotating wheel 4 slides in the arc-shaped groove section 661 of the fourth groove 66 at the proximal end of the withdrawal connecting rod 62, so that the withdrawal connecting rod does not move.

[0086] Continue to rotate the rotating wheel 4 in the same direction to enter the second stage until the first connecting rod shaft 43 on the rotating wheel 4 enters the arc-shaped groove section 551 of the third groove 55 at the proximal end of the needle-pushing connecting rod 52. Because the radius of the arc-shaped groove section 551 remains unchanged, the needle-pushing connecting rod 52 no longer moves when the rotating wheel is rotated; at the same time, the second connecting rod shaft 44 on the other side surface of the rotating wheel 4 enters the variable-radius groove section 662 of the fourth groove 66 at the proximal end of the withdrawal connecting rod 62. Because when the second connecting rod shaft 44 moves from the arc-shaped groove section 661 of the fourth groove 66 to the end of the variable-radius groove section 662, the distance from the center of the arc-shaped groove section 661 is constantly decreasing, thereby driving the withdrawal connecting rod 62 to move toward the proximal direction. Because a limit block 16 is provided in the shell 1, the radial movement of the withdrawal connecting rod 62 can be limited, so that it can only move along the axial direction of the shell 1 toward the proximal direction, driving the puncture needle 3 to move into the sleeve 2 to complete the needle retracting operation.

[0087] At this point, the process of delivering the implant 8 to a specific position in the eye is completed.

[0088] As a more preferred implementation scheme of this embodiment, in the third groove 55 at the proximal end of the push needle connecting rod 52, a transition section 553 is provided between the variable radius groove section 552 and the arc-shaped groove section 551, and the transition section 553 can be selected as an arc-shaped transition section; in the fourth groove 66 at the proximal end of the withdrawal connecting rod 62, a transition section 663 is provided between the arc-shaped groove section 661 and the variable radius groove section 662, and the transition section 663 can be selected as an arc-shaped transition section. By providing the transition section 553 between the variable radius groove section 552 and the arc-shaped groove section 551 in the third groove 55 at the proximal end of the push needle connecting rod 52, when the first connecting rod shaft 43 on the rotating wheel 4 ends the movement of the variable radius groove section 552 and enters the transition section 553, obvious thrust feedback will appear, and the user will feel that the implant pushing has ended, and can have a clear perception of the surgical process, which is convenient for the subsequent needle withdrawal operation. Similarly, by setting a transition section 663 between the arc-shaped groove section 661 and the variable-radius groove section 662 in the fourth groove 66 at the proximal end of the retraction connecting rod 62, when transitioning from the aforementioned first stage to the second stage, after the second connecting rod shaft 44 on the rotating wheel 4 completes the movement of the arc-shaped groove section 661 and enters the transition section 663, there will be obvious thrust feedback, and the user will feel that the pushing of the implant 8 has been completed. According to the status of the operation, the user can decide whether to retract the puncture needle 3 into the sleeve 2 by retracting the connecting rod mechanism 6 to end the eye implant surgery.

[0089] Example 4

[0090] like Fig.19 and 20 As shown, on the basis of embodiment 1, further, in order to improve convenience, teeth 46 can be provided on the outer peripheral surface of the rotating wheel 4, for example, a gear is used as the rotating wheel, and an operating sleeve 7 is further provided at a position corresponding to the opening 15 on the housing 1, and a rack portion 71 meshing with the teeth on the rotating wheel 4 is provided on the inner wall of the operating sleeve 7. The operating sleeve and the housing are slidably matched, and there are many specific ways of setting, such as Fig.19 and 20 As shown, for example, a slide groove can be provided on the side wall of the housing, and the operating sleeve can slide with the slide groove, or the sleeve can be provided in a ring shape and sleeved on the housing. By providing the operating sleeve 7, it is convenient for the doctor to push the operating sleeve 7 by hand to perform the operation. Compared with the solution of directly rotating the rotating wheel 4 to perform the operation, the flexibility and convenience of the operation of the ocular implant conveyor can be greatly improved, making the operation process more labor-saving and more efficient.

[0091] A more preferred implementation of this embodiment is that a spring sheet 72 is provided on the outer wall of the rod portion of the housing 1, and the spring sheet 72 extends to the outside of the housing 1 and cooperates with the rack portion 71 on the inner wall of the operating sleeve 7. By providing the spring sheet 72, when the doctor pushes the operating sleeve 7 to perform surgery, each time the rotating wheel 4 moves a tooth, the spring sheet 72 will be combined with the tooth 46, which can effectively prevent the rotating wheel 4 from rotating in the opposite direction due to misoperation during surgery, thereby improving the safety of the operation of the ocular implant conveyor, and by providing the spring sheet 72, it can be prevented that the doctor uses too much force during surgery, and the rotating wheel 4 rotates too fast, which affects the quality of the surgery, and further improves the safety of the surgery.

[0092] When the ocular implant delivery device of the present invention is used, the implant 8 that meets the surgical conditions is first loaded into the sterile puncture needle 3, and then the patient's eyes are treated accordingly according to the surgical conditions, such as anesthesia, sterilization, etc. When the surgery is to be performed, the positioning rod 9 on the housing 1 is pulled out, the locking of the needle pusher connecting rod 52 and the withdrawal connecting rod 62 is released, and the puncture needle 3 of the ocular implant delivery device is used to puncture the part of the patient where the ocular implant is to be implanted. The puncture depth of the puncture needle 3 can be limited by the sleeve 2, thereby improving the accuracy of the surgery. After the puncture is in place, The doctor holds the gripping part of the ocular implant delivery device and slowly pushes the rotating wheel 4 or the operating sleeve 7 toward the distal end of the housing 1. During this process, the third connecting rod shaft 54 ​​on the needle pusher connecting rod 52 moves toward the distal end of the housing 1 under the action of the rotating wheel 4. Because a limit block 16 is provided in the housing 1 to limit the position of the needle pusher connecting rod 52, the radial displacement of the needle pusher connecting rod 52 can be avoided, so that it can only move linearly toward the distal end of the housing 1, driving the pusher needle 51 to move toward the puncture needle 3, and pushing the ocular implant to reach the patient's intraocular subconjunctival cavity through the puncture hole 3. Continue to rotate the rotating wheel 4 in the same direction or push the operating sleeve 7 toward the distal end, and the retraction connecting rod 62 will move toward the proximal direction. During the movement, because the retraction connecting rod 62 is affected by the limit block 16 in the housing 1, it can only move linearly from the distal end of the housing 1 to the proximal direction, driving the puncture needle 3 to retract into the sleeve 2, completing the needle retraction operation. The ocular implant delivery device is used to deliver the implant 8 to a specific position in the eye. The tubular inner cavity of the implant 8 forms an aqueous humor outflow channel to discharge the aqueous humor in the eye, thereby achieving the purpose of reducing intraocular pressure.

[0093] The ocular implant delivery device of the present invention has a compact structure, ingenious design, and is easy to operate. It can greatly improve the accuracy, safety, and efficiency of surgery, reduce the difficulty and risk of surgical operations, alleviate the pain of patients, and improve the success rate of surgery.

[0094] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An ocular implant delivery device, characterized in that: It includes a shell, a rotating wheel, a needle-pushing connecting rod assembly, a retraction connecting rod assembly, a sleeve and a puncture needle. A through hole is provided in the direction of the distal end of the shell. The sleeve passes through the through hole from the inside of the shell and extends to the outside of the shell. The sleeve is fixedly connected to the shell. The puncture needle passes through the sleeve. The end of the puncture needle away from the needle tip is fixedly connected to the retraction connecting rod assembly. The push needle of the needle-pushing connecting rod assembly passes through the inner hole of the puncture needle. The rotating wheel is connected to the shell through a rotating shaft. An opening corresponding to the rotating wheel is provided on the shell. The needle-pushing connecting rod assembly and the retraction connecting rod assembly are respectively movably connected to the end faces on both sides of the rotating wheel. With the rotation of the rotating wheel, the needle-pushing connecting rod assembly can be driven to move toward the distal end of the shell or the retraction connecting rod assembly can be driven to move in the direction away from the distal end of the shell. The push-pin connecting rod assembly and the retracting connecting rod assembly are respectively movably connected to the end surfaces of both sides of the rotating wheel through the groove connecting rod shaft structure. When the rotating wheel rotates, the connecting rod shaft of the groove connecting rod shaft structure can slide with the groove as the moving track, thereby driving the push-pin connecting rod assembly to move toward the far end of the shell or driving the retracting connecting rod assembly to move away from the far end of the shell; The groove comprises two groove sections, wherein one groove section is a circular arc groove section, and the other groove section is a variable radius groove section, one end of the variable radius groove section is connected with one end of the circular arc groove section, and the distance between the center of the variable radius groove section and the circular arc groove section gradually decreases from the connecting portion of the variable radius groove section and the circular arc groove section toward the end of the variable radius groove section.

2. The ocular implant delivery device according to claim 1, characterized in that: The push pin connecting rod assembly includes a push pin, a push pin connecting rod and a connecting seat. The proximal end of the push pin is fixedly connected to the distal end of the push pin connecting rod, and the proximal end of the push pin connecting rod is fixedly connected to the connecting seat. A connecting rod shaft or a groove is provided on the side surface of the connecting seat opposite to the rotating wheel, and a groove or a connecting rod shaft is provided on the end surface corresponding to the rotating wheel.

3. The ocular implant delivery device according to claim 1, characterized in that: The retraction connecting rod assembly includes a connecting head, a retraction connecting rod and a connecting part. The connecting head is fixedly connected to the distal end of the retraction connecting rod, and the connecting part is fixedly connected to the proximal end of the retraction connecting rod. A connecting rod shaft or a groove is provided on the side surface of the connecting part opposite to the rotating wheel, and a groove or a connecting rod shaft is provided on the corresponding end surface of the rotating wheel.

4. An ocular implant delivery device, characterized in that: It includes a shell, a rotating wheel, a needle-pushing connecting rod assembly, a retraction connecting rod assembly, a sleeve and a puncture needle. A through hole is provided in the direction of the distal end of the shell. The sleeve passes through the through hole from the inside of the shell and extends to the outside of the shell. The sleeve is fixedly connected to the shell. The puncture needle passes through the sleeve. The end of the puncture needle away from the needle tip is fixedly connected to the retraction connecting rod assembly. The push needle of the needle-pushing connecting rod assembly passes through the inner hole of the puncture needle. The rotating wheel is connected to the shell through a rotating shaft. An opening corresponding to the rotating wheel is provided on the shell. The needle-pushing connecting rod assembly and the retraction connecting rod assembly are respectively movably connected to the end faces on both sides of the rotating wheel. With the rotation of the rotating wheel, the needle-pushing connecting rod assembly can be driven to move toward the distal end of the shell or the retraction connecting rod assembly can be driven to move in the direction away from the distal end of the shell. A first groove and an eccentric second connecting rod shaft are respectively provided on the end faces of both sides of the rotating wheel, a third connecting rod shaft corresponding to the first groove is provided at the proximal end of the push-pin connecting rod assembly, and a fourth groove corresponding to the second connecting rod shaft is provided at the proximal end of the retraction connecting rod assembly; the first groove includes a variable radius groove section and an arc groove section, when the rotating wheel rotates toward the distal direction, the third connecting rod shaft slides from the end of the variable radius groove section of the first groove to the end of the arc groove section; the fourth groove includes an arc groove section and a variable radius groove section, when the rotating wheel rotates toward the distal direction, the second connecting rod shaft slides from the end of the arc groove section of the fourth groove to the end of the variable radius groove section.

5. An ocular implant delivery device, characterized in that: It includes a shell, a rotating wheel, a needle-pushing connecting rod assembly, a retraction connecting rod assembly, a sleeve and a puncture needle. A through hole is provided in the direction of the distal end of the shell. The sleeve passes through the through hole from the inside of the shell and extends to the outside of the shell. The sleeve is fixedly connected to the shell. The puncture needle passes through the sleeve. The end of the puncture needle away from the needle tip is fixedly connected to the retraction connecting rod assembly. The push needle of the needle-pushing connecting rod assembly passes through the inner hole of the puncture needle. The rotating wheel is connected to the shell through a rotating shaft. An opening corresponding to the rotating wheel is provided on the shell. The needle-pushing connecting rod assembly and the retraction connecting rod assembly are respectively movably connected to the end faces on both sides of the rotating wheel. With the rotation of the rotating wheel, the needle-pushing connecting rod assembly can be driven to move toward the distal end of the shell or the retraction connecting rod assembly can be driven to move in the direction away from the distal end of the shell. A second groove and an eccentric first connecting rod shaft are respectively provided on the end faces of both sides of the rotating wheel, a third groove corresponding to the first connecting rod shaft is provided at the proximal end of the push-pin connecting rod assembly, and a fourth connecting rod shaft corresponding to the second groove is provided at the proximal end of the retraction connecting rod assembly; the third groove includes a variable radius groove section and an arc groove section, and when the rotating wheel rotates toward the distal direction, the first connecting rod shaft slides from the end of the variable radius groove section of the third groove to the end of the arc groove section; the second groove includes an arc groove section and a variable radius groove section, and when the rotating wheel rotates toward the distal direction, the fourth connecting rod shaft slides from the end of the arc groove section of the second groove to the end of the variable radius groove section.

6. An ocular implant delivery device, characterized in that: It includes a shell, a rotating wheel, a needle-pushing connecting rod assembly, a retraction connecting rod assembly, a sleeve and a puncture needle. A through hole is provided in the direction of the distal end of the shell. The sleeve passes through the through hole from the inside of the shell and extends to the outside of the shell. The sleeve is fixedly connected to the shell. The puncture needle passes through the sleeve. The end of the puncture needle away from the needle tip is fixedly connected to the retraction connecting rod assembly. The push needle of the needle-pushing connecting rod assembly passes through the inner hole of the puncture needle. The rotating wheel is connected to the shell through a rotating shaft. An opening corresponding to the rotating wheel is provided on the shell. The needle-pushing connecting rod assembly and the retraction connecting rod assembly are respectively movably connected to the end faces on both sides of the rotating wheel. With the rotation of the rotating wheel, the needle-pushing connecting rod assembly can be driven to move toward the distal end of the shell or the retraction connecting rod assembly can be driven to move in the direction away from the distal end of the shell. The two side surfaces of the rotating wheel are respectively provided with a first groove and a second groove, and the push-pin connecting rod assembly and the retracting connecting rod assembly are respectively provided with a third connecting rod shaft and a fourth connecting rod shaft corresponding to the first groove and the second groove, and the first groove includes a variable radius groove section and an arc-shaped groove section; When the rotating wheel rotates toward the distal direction, the third connecting rod shaft slides from the end of the variable radius groove section of the first groove to the end of the circular arc groove section; the second groove includes an arc groove section and a variable radius groove section, and when the rotating wheel rotates toward the distal direction, the fourth connecting rod shaft slides from the end of the circular arc groove section of the second groove to the end of the variable radius groove section.

7. An ocular implant delivery device, characterized in that: It includes a shell, a rotating wheel, a needle-pushing connecting rod assembly, a retraction connecting rod assembly, a sleeve and a puncture needle. A through hole is provided in the direction of the distal end of the shell. The sleeve passes through the through hole from the inside of the shell and extends to the outside of the shell. The sleeve is fixedly connected to the shell. The puncture needle passes through the sleeve. The end of the puncture needle away from the needle tip is fixedly connected to the retraction connecting rod assembly. The push needle of the needle-pushing connecting rod assembly passes through the inner hole of the puncture needle. The rotating wheel is connected to the shell through a rotating shaft. An opening corresponding to the rotating wheel is provided on the shell. The needle-pushing connecting rod assembly and the retraction connecting rod assembly are respectively movably connected to the end faces on both sides of the rotating wheel. With the rotation of the rotating wheel, the needle-pushing connecting rod assembly can be driven to move toward the distal end of the shell or the retraction connecting rod assembly can be driven to move in the direction away from the distal end of the shell. An eccentric first connecting rod shaft and a second connecting rod shaft are respectively provided on both side surfaces of the rotating wheel; a third groove corresponding to the first connecting rod shaft is provided at the proximal end of the push-pin connecting rod assembly, the third groove includes a variable radius groove section and an arc-shaped groove section, when the rotating wheel rotates toward the distal direction, the first connecting rod shaft slides from the end of the variable radius groove section of the third groove to the end of the arc-shaped groove section; a fourth groove is provided at the proximal end of the retraction connecting rod assembly, the fourth groove includes an arc-shaped groove section and a variable radius groove section, when the rotating wheel rotates toward the distal direction, the second connecting rod shaft slides from the end of the arc-shaped groove section of the fourth groove to the end of the variable radius groove section.

8. The ocular implant delivery device according to any one of claims 1, 4 to 7, characterized in that: The proximal end of the sleeve is fixedly connected to the sleeve seat, the sleeve seat is arranged in a position close to the through hole in the shell, and the sleeve passes through the through hole on the shell and extends to the outside of the shell.

9. The ocular implant delivery device according to any one of claims 1, 4 to 7, characterized in that: The proximal end of the puncture needle is provided with a puncture needle seat, the puncture needle and the puncture needle seat are fixedly connected, the puncture needle passes through the sleeve, and the puncture needle seat is fixedly connected to the distal end of the retracting connecting rod assembly.

10. The ocular implant delivery device according to any one of claims 1, 4 to 7, characterized in that: The shell body comprises an upper shell body and a lower shell body, which are fixedly connected, and both the upper shell body and the lower shell body comprise a rod portion, a grip portion and a conical portion, which are fixedly connected; a rotating wheel assembly seat is provided on the inner wall of the rod portion of the shell body, and the rotating wheel is assembled on the rotating wheel assembly seat through a rotating shaft; a limiting block is provided on the inner wall surface of at least one of the rod portion, the grip portion and the conical portion, and the limiting block is used to radially limit the push-pin connecting rod assembly and the retraction connecting rod assembly.

11. The ocular implant delivery device according to any one of claims 1, 4 to 7, characterized in that: The outer circumference of the rotating wheel is provided with teeth, an operating sleeve is provided at a position corresponding to the opening on the shell, the operating sleeve is slidably matched with the shell, and a rack part meshing with the teeth on the rotating wheel is provided on the inner wall of the operating sleeve.

12. The ocular implant delivery device according to claim 11, characterized in that: An elastic sheet is arranged on the outer wall of the shell, and the elastic sheet extends to the outside of the shell and matches with the rack part on the inner wall of the operating sliding sleeve.

13. The ocular implant delivery device according to any one of claims 1, 4 to 7, characterized in that: Positioning parts are respectively provided on the push-pin connecting rod assembly and the retracting connecting rod assembly, and opposite positioning holes are provided on the positioning parts. Positions corresponding to the positioning holes are provided on the shell body, and positioning plugs are provided in the positioning holes.

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