Eye implantation drainage device and conveying system thereof

Abstract

The invention discloses an eye implantation drainage device and a conveying system thereof. The eye implantation drainage device comprises a head end, a connecting tube and a base which are connected in sequence, the eye implantation drainage device is provided with a drainage channel which is sequentially communicated with the head end, the connecting pipe and the base. A plurality of first connecting holes are formed in the side wall of the head end, and each first connecting hole is communicated with the drainage channel; a plurality of second connecting holes are formed in the side wall of the base, and each second connecting hole is communicated with the drainage channel; the head end is gradually thinned in the direction away from the base, and the head end is used for being inserted into a trabecular net through the anterior chamber of the eyes; the base is then at least partially residing in the anterior chamber of the eye. By the adoption of the eye implantation drainage device, the blocking probability of the eye implantation drainage device can be reduced, and then the use reliability of the eye implantation drainage device is improved.

Description

Technical Field

[0001] This application relates to the technical field of medical devices, and particularly to an ocular implant drainage device and its delivery system. Background Art

[0002] The human eye is a specialized sensory organ capable of light reception and receiving visual images. Aqueous humor (hereinafter referred to as "aqueous") is a transparent liquid that fills at least the area between the cornea and the lens in the front part of the eye. Aqueous humor is continuously secreted into the posterior chamber of the eye by the ciliary processes of the ciliary body, and the aqueous humor flows through the pupil into the anterior chamber, so there is a constant flow of aqueous humor from the ciliary body to the anterior chamber of the eye. The aqueous humor supplies nutrients to the avascular structures of the eye (such as the cornea and the lens) and maintains intraocular pressure. The pressure within the eye is determined by the balance between the production of aqueous humor and its drainage through the trabecular meshwork and / or the scleral venous sinus (Schlemm's canal, e.g., the conventional outflow pathway).

[0003] Many cases of open-angle glaucoma are caused by increased resistance to the drainage of aqueous humor through the trabecular meshwork and / or the scleral venous sinus (Schlemm's canal, e.g., the conventional outflow pathway). The existing general solution is to set an implant to drain aqueous humor through the trabecular meshwork, and the existing implants are usually prone to blockage. Summary of the Invention

[0004] To solve the defects existing in the prior art, the purpose of the present invention is to provide an ocular implant drainage device and its delivery system to solve the above technical problems.

[0005] To achieve the above purpose, a technical solution adopted by the present invention is: to provide an ocular implant drainage device, characterized in that the ocular implant drainage device includes:

[0006] A head end, a connecting tube, and a base connected in sequence;

[0007] The ocular implant drainage device is provided with a drainage channel that sequentially communicates with the head end, the connecting tube, and the base;

[0008] A plurality of first connection holes are provided on the side wall of the head end, and each first connection hole communicates with the drainage channel; a plurality of second connection holes are provided on the side wall of the base, and each second connection hole communicates with the drainage channel;

[0009] The head end tapers gradually in a direction away from the base, wherein the head end is used to be inserted into the trabecular meshwork through the anterior chamber of the eye;

[0010] The base at least partially resides in the anterior chamber of the eye.

[0011] Optionally, the base tapers gradually in a direction away from the head end.

[0012] Optionally, a guiding tube is further connected to the side of the head end facing away from the base, and the guiding tube is communicated with the drainage channel;

[0013] The guiding tube is used to be inserted into the bulbar conjunctiva of the eye.

[0014] Optionally, the head end does not extend beyond Schlemm's canal.

[0015] To achieve the above object, a technical solution adopted by the present invention is: to provide a delivery system for an ocular implant drainage device, characterized in that the delivery system includes a delivery device and the ocular implant drainage device as described above;

[0016] The ocular implant drainage device is arranged in the delivery system, and the delivery device includes:

[0017] A handle and a puncture needle connected to the handle, and the puncture needle is used to penetrate into the anterior chamber;

[0018] A delivery mechanism is arranged in the puncture needle for setting the ocular implant drainage device to a set position.

[0019] Optionally, a puncture needle driving mechanism is arranged in the handle, and the puncture needle driving mechanism includes:

[0020] A rotating push rod, one end of the rotating push rod is arranged in the handle and is rotatably connected to the handle, and the other end of the rotating push rod is exposed outside the handle;

[0021] Wherein, the puncture needle is connected to the rotating push rod, and the rotation of the rotating push rod drives the puncture needle to perform a telescopic movement relative to the handle.

[0022] Optionally, the delivery mechanism includes a guiding component and a pushing mechanism, at least part of the guiding component is inserted into the puncture needle; the pushing mechanism is installed in the handle;

[0023] Wherein, the guiding component includes a support wire and a push tube, one end of the support wire is fixedly connected to the handle, and the other end extends into the puncture needle, and the end of the support wire close to the puncture needle is used to sleeved with the ocular implant drainage device;

[0024] Wherein, the push tube is sleeved on the support wire, and one end of the push tube extends into the handle and is connected to the pushing mechanism, and the other end abuts against the ocular implant drainage device;

[0025] The pushing mechanism is used to push the push tube to move, so as to push the ocular implant drainage device to move along the support wire.

[0026] Optionally, the pushing mechanism includes a rotating gear and a connecting block;

[0027] The rotating gear is rotatably mounted on the handle and partially exposed on the side wall of the handle;

[0028] A rack is provided on the connecting block, and the rotating gear meshes with the rack.

[0029] Optionally, the guiding assembly further includes a protective tube. One end of the protective tube is inserted into the puncture needle, and the other end is fixedly connected to the handle;

[0030] Both the support wire and the push tube are at least partially disposed within the protective tube;

[0031] Wherein, a limiting portion is further provided on the inner wall of the protective tube near the puncture head end of the puncture needle. The limiting portion is used to abut against the eye implant drainage device to limit the position of the eye implant drainage device on the support wire.

[0032] The present application provides an eye implant drainage device and its delivery system. In the solution of the present application, a plurality of second connection holes opened on the base communicate with the anterior chamber, and each second connection hole can drain the aqueous humor in the anterior chamber along the drainage channel through the trabecular meshwork, thereby preventing the problem of blocked aqueous humor drainage caused by blocked trabecular meshwork. Further, by providing a plurality of second connection holes on the side wall of the base, the blockage probability of the eye implant drainage device can be reduced, and thus the use reliability of the eye implant drainage device can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic structural diagram of an embodiment of an eye implant drainage device provided by the present application;

[0034] Figure 2 is Figure 1 a three-dimensional structural diagram of the eye implant drainage device shown;

[0035] Figure 3 is a schematic structural diagram of another embodiment of an eye implant drainage device provided by the present application;

[0036] Figure 4 is a schematic structural diagram of another embodiment of an eye implant drainage device provided by the present application;

[0037] Figure 5 is a schematic structural diagram of an embodiment of a delivery system of an eye implant drainage device provided by the present application;

[0038] Figure 6 is Figure 5 a schematic structural diagram of the delivery system shown after removing a part of the outer shell;

[0039] Figure 7 is Figure 5 an axial sectional view of the shown conveying system;

[0040] Figure 8 is Figure 7 a partially enlarged view of the shown conveying system in Region II. Detailed implementation manners

[0041] To make the above objects, features, and advantages of the present application more obvious and understandable, the following will describe the detailed implementation manners of the present application with reference to the accompanying drawings. Many specific details are set forth in the following description to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0042] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application.

[0043] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0044] In the present application, unless otherwise clearly specified and limited, the terms "mount", "connect", "couple", "fix", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0045] In this application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply indicates that the horizontal height of the first feature is less than that of the second feature.

[0046] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

[0047] Please refer to Figure 1 - Figure 2 , Figure 1 which is a schematic structural diagram of an embodiment of an ocular implant drainage device provided by this application; Figure 2 is Figure 1 a three-dimensional structural diagram of the ocular implant drainage device shown.

[0048] The ocular implant drainage device 10 includes: a head end 110, a connecting tube 120 and a base 130 that are connected in sequence; the ocular implant drainage device 10 is provided with a drainage channel 101 that sequentially communicates with the head end 110, the connecting tube 120 and the base 130; wherein, the drainage channel 101 is arranged along the axial directions of the head end 110, the connecting tube 120 and the base 130, and sequentially passes through the central regions of the head end 110, the connecting tube 120 and the base 130.

[0049] Wherein, a plurality of first connection holes 111 are provided on the side wall of the head end 110, and each first connection hole 111 communicates with the drainage channel 101; a plurality of second connection holes 131 are provided on the side wall of the base 130, and each second connection hole 131 communicates with the drainage channel 101; the head end 110 gradually tapers in the direction away from the base 130, wherein the head end 110 is used for being inserted into the trabecular meshwork of the eye through the anterior chamber; the base 130 at least partially resides in the anterior chamber of the eye.

[0050] Therefore, in the solution of the present application, a plurality of second connection holes 131 opened on the base 130 communicate with the anterior chamber, and each second connection hole 131 can drain the aqueous humor in the anterior chamber along the drainage channel 101 through the trabecular meshwork, so as to prevent the problem of blocked aqueous humor drainage caused by blocked trabecular meshwork. Further, by providing a plurality of second connection holes 131 on the side wall of the base 130, the blockage probability of the ocular implant drainage device 10 can be reduced, thereby improving the reliability of use of the ocular implant drainage device 10.

[0051] Wherein, the head end 110 gradually tapers in the direction away from the base 130, that is, the head end 110 can be conical or approximately conical, and this structure can assist in puncturing the trabecular meshwork when the head end 110 punctures the trabecular meshwork.

[0052] Optionally, the second connection holes 131 can be provided on the side wall of the base 130 and are evenly distributed at equal intervals in the circumferential direction of the side wall of the base 130; in some other embodiments, a plurality of second connection holes 131 can also be opened on the bottom wall of the base 130 (the end surface of the base 130 on the side away from the head end 110), and a plurality of second connection holes 131 can be evenly distributed around the opening of the drainage channel 101.

[0053] In this embodiment, in the direction perpendicular to the axis of the drainage channel 101, the cross-sectional dimension of the base 130 is set to be larger than the cross-sectional dimension of the head end 110, and the cross-sectional dimension of the head end 110 is larger than the cross-sectional dimension of the connecting tube 120, that is, the ocular implant drainage device 10 is integrally recessed at the position of the connecting tube 120, and this recessed area can fix the position of the ocular implant drainage device 10 by clamping the trabecular meshwork therein.

[0054] Wherein, the base 130 is cylindrical, its diameter is 355 microns to 365 microns, and the length of the ocular implant drainage device 10 is 390 microns to 410 microns. The diameter of the drainage channel 101 is 70 microns to 90 microns; the diameters of the first connection hole 111 and the second connection hole 131 can be set to be the same, and both diameters can be 40 microns to 60 microns.

[0055] Further, in some other embodiments, please refer to Figure 3 , Figure 3 which is a schematic structural diagram of another embodiment of an ocular implant drainage device provided by the present application.

[0056] Wherein, the base 130 gradually tapers in the direction away from the head end 110, so as to adjust the opening direction of the second connection hole 131, so as to adjust the entry direction of the aqueous humor, and further reduce the blockage risk.

[0057] Further, in some other embodiments, please refer to Figure 4 , Figure 4 which is a schematic structural diagram of another embodiment of an ocular implant drainage device provided by the present application.

[0058] On the side of the head end 110 facing away from the base 130, a guiding tube 140 is further connected, and the guiding tube 140 communicates with the drainage channel 101; the guiding tube 140 is used to be inserted into the bulbar conjunctiva of the eye.

[0059] Optionally, the head end 110 is not set to extend beyond Schlemm's canal.

[0060] Further, based on the same inventive concept, the present application also provides a delivery system for an ocular implant drainage device. Please refer to Figure 5 - Figure 8 , Figure 5 which is a schematic structural diagram of an embodiment of a delivery system for an ocular implant drainage device provided by the present application; Figure 6 is Figure 5 a schematic structural diagram of the delivery system shown after removing part of the outer shell; Figure 7 is Figure 5 an axial sectional view of the delivery system shown; Figure 8 is Figure 7 a partial enlarged view of the delivery system shown in region II.

[0061] The delivery system 20 includes a delivery device 200 and the ocular implant drainage device 10 as described in any of the previous embodiments. The ocular implant drainage device 10 is disposed within the delivery system, and the delivery device 200 can deliver the ocular implant drainage device 10 to a set position.

[0062] Among them, the delivery device 200 includes: a handle 210 and a puncture needle 220 connected to the handle 210. The puncture needle 220 is used to penetrate into the anterior chamber; a delivery mechanism is disposed within the puncture needle 220 for setting the ocular implant drainage device 10 to a set position.

[0063] Among them, a puncture needle driving mechanism 240 is disposed within the handle 110. The puncture needle driving mechanism 240 includes: a rotary push rod 241. One end of the rotary push rod 241 is disposed within the handle 210 and is rotatably connected to the handle 210, and the other end of the rotary push rod 241 is exposed outside the handle 210; therefore, by manually pushing the end of the rotary push rod 241 exposed outside the handle 210, the rotary push rod 241 can be rotated relative to the handle 210.

[0064] Wherein, one end of the puncture needle 220 extends into the handle 210 and is connected to the rotary push rod 241. By rotating the rotary push rod 241, the puncture needle 220 is driven to perform a telescopic movement relative to the handle 210. In this solution, before the puncture needle 220 penetrates into the anterior chamber and when the puncture head 221 of the puncture needle 220 faces the set position of the trabecular meshwork, the puncture needle 220 can be driven to move into the handle 210, so that the delivery mechanism in the puncture needle 220 can be exposed.

[0065] The puncture needle driving mechanism 240 further includes a connecting member 242. One end of the connecting member 242 is connected to the puncture needle 220, and the other end is rotatably connected to the rotary push rod 241.

[0066] Wherein, the delivery mechanism includes a guiding component 231 and a pushing mechanism 232. The guiding component 231 is at least partially inserted into the puncture needle 210; the pushing mechanism 232 is installed in the handle 210. Among them, the guiding component 231 includes a support wire 2311 and a push tube 2312. One end of the support wire 2311 is fixedly connected to the handle 210, and the other end extends into the puncture needle 220. The end of the support wire 2311 close to the puncture needle 220 is used for sleeving the eye implant drainage device 10; the end of the support wire 2311 close to the handle 210 extends into the handle 210 and is fixedly connected to the handle 210.

[0067] Wherein, the push tube 2312 is sleeved on the support wire 2311, and one end of the push tube 2312 extends into the handle 210 and is connected to the pushing mechanism 232, and the other end abuts against the eye implant drainage device 10; the pushing mechanism 232 is used to push the push tube 2312 to move, so as to push the eye implant drainage device 10 to move along the support wire 2311. Thus, the eye implant drainage device 10 arranged on the support wire 2311 can puncture into the trabecular meshwork from one side of the anterior chamber.

[0068] The pushing mechanism 232 includes a rotary gear 2321 and a connecting block 2322; the rotary gear 2321 is rotatably installed in the handle 210, and part of it is exposed on the side wall of the handle 210; a rack is arranged on the connecting block 2322, and the rotary gear 2321 meshes with the rack. The connecting block 2322 can be movably installed in the handle 210, and the connecting block 2322 can be driven to perform a linear movement by the rotation of the rotary gear 2321. Among them, the push tube 2312 is connected to the connecting block 2322. Through the linear movement of the connecting block 2322, the push tube 2312 can be driven to perform a reciprocating movement along the axis direction of the support wire 2311.

[0069] Among them, by turning the rotating gear 2321 in a set direction, the push tube 2312 can be driven to move to abut against the eye implant drainage device 10, and then the eye implant drainage device 10 is pushed toward the end away from the handle, so that it can puncture into the trabecular meshwork. In this scheme, by adjusting the number of teeth on the rotating gear 2321 and other parameters, each time the rotating gear 2321 is turned, the push tube 2312 can just push one eye implant drainage device 10 out of the support wire 2311 to complete the puncture action.

[0070] Optionally, the end of the support wire 2311 away from the handle 210 is a pointed tip, which can pre-puncture the trabecular meshwork to form a pre-puncture opening, and the push tube 2312 pushes the eye implant drainage device 10 to gradually penetrate into the trabecular meshwork along the pre-puncture opening.

[0071] Optionally, the guide assembly 230 also includes a protective tube 233, one end of which is inserted into the puncture needle 220, and the other end is fixedly connected to the handle 210; the support wire 2311 and the push tube 2312 are at least partially arranged in the protective tube 233; wherein, a limiting portion 2331 is also arranged on the inner wall of the protective tube 233 at one end of the puncture head 221 of the puncture needle 220, and the limiting portion 2331 is used to abut the eye implant drainage device 10 to limit the position of the eye implant drainage device 10 on the supporting wire 2311, thereby preventing the eye implant drainage device 10 from detaching from the supporting wire 2311.

[0072] Among them, it should be noted that under the push of the push tube 2312, the eye-implanted drainage device 10 can move along the support wire 2311 and then detach from the support wire 2311 to perform trabecular meshwork puncture. When the push of the push tube 2312 is not used, the limiting portion 2331 can abut and position the eye-implanted drainage device 10 to prevent the eye-implanted drainage device 10 from detaching from the support wire 2311.

[0073] It is worth noting that the handle 210 is in an arc shape as a whole and matches the hand line of the operator when grasping, thereby improving the gripping comfort of the operator. In addition, the exposed portion of the rotating push rod 241 is arranged at the top of the handle 210, and the rotating gear 2321 is arranged at the side end of the handle 210 and corresponds to the position of the exposed portion of the rotating push rod 241, so that the thumb and index finger can operate the rotating push rod 241 and the rotating gear 2321 separately.

[0074] In summary, the present application provides an ocular implant drainage device and its delivery system. In the solution of the present application, a plurality of second connection holes opened on the base communicate with the anterior chamber, and each second connection hole can drain the aqueous humor in the anterior chamber along the drainage channel through the trabecular meshwork, thereby preventing the problem of blocked aqueous humor drainage caused by trabecular meshwork blockage. Further, by providing a plurality of second connection holes on the side wall of the base, the blockage probability of the ocular implant drainage device can be reduced, and thus the reliability of use of the ocular implant drainage device can be improved.

[0075] The above embodiments are only illustrative examples of the present invention, rather than all embodiments. The present invention can also be implemented in other specific ways or other specific forms without departing from the gist or essential features of the present invention. Therefore, the described embodiments should be regarded as illustrative rather than restrictive in any aspect. The scope of the present invention should be defined by the appended claims, and any equivalent changes to the intention and scope of the claims should also be included within the scope of the present invention.

Claims

1. An ocular implant drainage device, characterized in that, The ocular implant drainage device includes: A head end, a connecting tube, and a base that are connected in sequence; The ocular implant drainage device is provided with a drainage channel that sequentially communicates with the head end, the connecting tube, and the base; A plurality of first connection holes are provided on the side wall of the head end, and each first connection hole communicates with the drainage channel; a plurality of second connection holes are provided on the side wall of the base, and each second connection hole communicates with the drainage channel; The head end tapers gradually in a direction away from the base, wherein the head end is used to be inserted into the trabecular meshwork through the anterior chamber of the eye; The base at least partially resides in the anterior chamber of the eye.

2. The ocular implant drainage device according to claim 1, wherein The base tapers gradually in a direction away from the head end.

3. The ocular implant drainage device according to claim 1, wherein A guiding tube is further connected to a side of the head end away from the base, and the guiding tube communicates with the drainage channel; The guiding tube is used to be inserted into the bulbar conjunctiva of the eye.

4. The ocular implant drainage device according to claim 3, wherein The head end does not extend beyond Schlemm's canal.

5. A delivery system for an ocular implant drainage device, characterized in that, The delivery system includes a delivery device and the ocular implant drainage device according to any one of claims 1-4; The ocular implant drainage device is disposed within the delivery system, and the delivery device includes: A handle and a puncture needle connected to the handle, and the puncture needle is used to penetrate into the anterior chamber; A delivery mechanism is disposed within the puncture needle for setting the ocular implant drainage device to a set position.

6. The delivery system according to claim 5, wherein A puncture needle driving mechanism is disposed within the handle, and the puncture needle driving mechanism includes: A rotary push rod, one end of the rotary push rod is disposed within the handle and is rotatably connected to the handle, and the other end of the rotary push rod is exposed outside the handle; Wherein, the puncture needle is connected to the rotary push rod, and by rotating the rotary push rod, the puncture needle is driven to perform a telescopic movement relative to the handle.

7. The delivery system according to claim 6, wherein The delivery mechanism includes a guiding assembly and a pushing mechanism, and at least a part of the guiding assembly is inserted into the puncture needle; the pushing mechanism is installed within the handle; Wherein, the guiding assembly includes a support wire and a push tube, one end of the support wire is fixedly connected to the handle, and the other end extends into the puncture needle, and the end of the support wire close to the puncture needle is used to sleeved with the ocular implant drainage device; Wherein, the push tube is sleeved on the support wire, and one end of the push tube extends into the handle and is connected to the pushing mechanism, and the other end abuts against the ocular implant drainage device; The pushing mechanism is used to push the push tube to move, so as to push the ocular implant drainage device to move along the support wire.

8. The delivery system according to claim 7, wherein The pushing mechanism includes a rotary gear and a connecting block; The rotary gear is rotatably installed within the handle and is partially exposed on the side wall of the handle; A rack is provided on the connecting block, and the rotating gear meshes with the rack.

9. The conveying system according to claim 7, wherein the guiding assembly further includes a protection tube, one end of the protection tube is inserted into the puncture needle, and the other end is fixedly connected to the handle; both the support wire and the push tube are at least partially disposed within the protection tube; wherein, a limiting portion is further provided on the inner wall of the protection tube near the puncture head end of the puncture needle, and the limiting portion is used to abut against the eye implant drainage device to limit the position of the eye implant drainage device on the support wire.

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