Glaucoma drainage tube implanting device
By designing a glaucoma drainage tube implantation device, the combination of the drive member and the rotating wheel is used to achieve stable implantation of the drainage tube, solving the problem of implantation of the small diameter drainage tube, reducing surgical trauma, and improving the convenience and safety of operation.
Patent Information
- Application Number
- CN202422218051.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-09-10
AI Technical Summary
How to safely and stably implant glaucoma drainage tube with smaller diameter into the eyes to reduce surgical trauma.
A glaucoma drainage tube implantation device is designed, including a shell main body, a needle assembly, a bolt rod and a driving assembly. The driving member drives the central axis of the rotating wheel to rotate, and the rotating wheel drives the pusher to move along the shell main body, realizing the pushing and retraction of the drainage tube, ensuring stable implantation of the drainage tube.
The stable implantation of glaucoma drainage tube is achieved, reducing surgical trauma, and improving the convenience and safety of operation.
Smart Images
Figure CN223232896U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of ophthalmic instruments, and in particular to a glaucoma drainage tube implantation device. Background Art
[0002] Glaucoma is a blinding eye disease caused primarily by increased intraocular pressure, which damages the optic nerve. The principle of glaucoma treatment is to reduce the patient's intraocular pressure. The main treatments include eye drops, oral anti-ocular medications, laser therapy, and surgery, all aimed at lowering intraocular pressure. Currently, a new minimally invasive procedure is being used to treat glaucoma. This involves implanting a drainage tube with an inner diameter of tens of microns into the eye to drain the fluid, thereby lowering intraocular pressure. This method is less invasive than traditional surgery.
[0003] How to implant a drainage tube with a smaller diameter into the eye is a key consideration of this method. Based on this, the present application provides a glaucoma drainage tube implantation device. Utility Model Content
[0004] The present application provides a glaucoma drainage tube implantation device, which can facilitate the implantation of a glaucoma drainage tube into the eye.
[0005] This application is implemented as follows:
[0006] The present application provides a glaucoma drainage tube implantation device, comprising:
[0007] a shell body having a distal end and a proximal end;
[0008] a needle assembly mounted at the distal end of the housing body, the needle assembly comprising a needle seat and an injection needle, the injection needle being mounted on the needle seat, the needle seat being connected to the housing body and being movable along the axial direction of the housing body;
[0009] an injection rod, one end of which is disposed in the internal channel of the injection needle and is used for injecting the glaucoma drainage tube in the injection needle; and
[0010] The drive assembly includes a first pusher, a second pusher, a rotating wheel and a drive member, the first pusher and the second pusher are slidably matched with the shell body and can slide along the axial direction of the shell body, the first pusher is connected to the injection rod, and the second pusher is connected to the needle seat; the central axis of the rotating wheel is slidably matched with the shell body, and the rotating wheel can engage with the first pusher and the second pusher, and the drive member is configured to drive the central axis of the rotating wheel to rotate, and at the same time, the rotation of the rotating wheel causes the first pusher to move toward the distal end of the shell body, and the second pusher to move toward the proximal end of the shell body.
[0011] In a possible embodiment, the first pushing member has a first rack, the second pushing member has a second rack, and a portion of the outer peripheral surface of the rotating wheel is provided with teeth. The rotating wheel has a first state and a second state when rotating. In the first state, the teeth of the rotating wheel are engaged with the first rack and the first pushing member has a tendency to move toward the distal end of the shell body; in the second state, the teeth of the rotating wheel are engaged with the second rack and the second pushing member has a tendency to move toward the proximal end of the shell body.
[0012] In a possible embodiment, the driving member includes a dial coaxially connected to the rotating wheel, and the dial is used to drive the central axis of the rotating wheel to rotate.
[0013] In a possible embodiment, the driving member includes a sliding block, the shell body is provided with a through groove, the sliding block is installed in the through groove and is slidably connected to the shell body, and the through groove extends along the length direction of the shell body; the sliding block is configured to drive the central axis of the rotating wheel to rotate while sliding along the through groove and moving axially along the shell body, and the dial is arranged on the sliding block.
[0014] In a possible embodiment, the driving member includes the sliding block, a gear and an engaging member fixed in the shell body, the gear is coaxially connected to the central axis of the rotating wheel and can engage with the engaging member, and the central axis of the rotating wheel is rotatably connected to the sliding block.
[0015] In a possible embodiment, the engaging member includes a third rack, and the length of the third rack is set so that when the sliding block slides to an end of the through slot close to the distal end of the shell body, the gear disengages from the third rack.
[0016] In a possible embodiment, the inner wall of the shell body is connected to a first support seat and a second support seat, and the first support seat and the second support seat are both provided with a through hole extending along the length direction of the shell body, and the first pushing member is passed through the through hole and supported on the first support seat, and can slide relative to the first support seat; the second pushing member is passed through the through hole and supported on the second support seat, and can slide relative to the second support seat.
[0017] In a possible embodiment, both ends of the first pushing member have first limiting portions, the outer diameter of the first limiting portion is larger than the aperture of the through hole, and the first limiting portion is used to limit the first pushing member from escaping from the first supporting seat.
[0018] In a possible embodiment, both ends of the second pushing member have second limiting portions, the outer diameter of the second limiting portion is larger than the aperture of the through hole, and the second limiting portion is used to limit the second pushing member from escaping from the second supporting seat.
[0019] In a possible embodiment, the shell body is provided with a slide groove, and the needle seat is provided with a convex strip, and the convex strip is provided in the slide groove and can be slidably matched with the slide groove.
[0020] The embodiments of the present application have at least the following beneficial effects:
[0021] The glaucoma drainage tube implantation device of the present application drives the central axis of the rotating wheel to rotate by a driving member. When the rotating wheel rotates, it causes the first pusher to move toward the distal end of the shell body. The movement of the first pusher drives the injection rod to move toward the distal end of the shell body, thereby pushing the glaucoma drainage tube of the injection needle out of the injection needle; in addition, the rotation of the rotating wheel causes the second pusher to move toward the proximal end of the shell body. The movement of the second pusher drives the needle seat to move along the axial direction of the shell body and toward the proximal end of the shell body, thereby causing the injection needle to retract into the shell body, so that the glaucoma drainage tube is stably implanted into the eye. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.
[0023] Figure 1 This is a schematic diagram of the glaucoma drainage tube according to an embodiment of the present application in a first state;
[0024] Figure 2 A schematic diagram of a glaucoma drainage tube according to an embodiment of the present application;
[0025] Figure 3 This is a schematic diagram of the glaucoma drainage tube according to an embodiment of the present application in the second state.
[0026] Figure 4 A schematic diagram of a sliding block in a through-groove of a glaucoma drainage tube according to an embodiment of the present application;
[0027] Figure 5 A schematic diagram of a sliding block in a through-groove of a glaucoma drainage tube according to an embodiment of the present application;
[0028] Figure 6 Schematic diagram of a driving member according to an embodiment of the present application.
[0029] Icons: 10-Glaucoma drainage tube implant device; 11-shell body; 111-distal end; 112-proximal end; 113-through groove; 114-first limiting groove; 115-first support seat; 116-second support seat; 12-needle assembly; 121-needle seat; 1211-convex strip; 122-injection needle; 13-injection rod; 14-driving assembly; 141-first pushing member; 1411-first rack; 1412-first limiting portion; 142-second pushing member; 1421-second rack; 1422-second limiting portion; 143-rotating wheel; 1431-central axis; 144-driving member; 1441-gear; 1442-sliding block; 1443-engaging member; 1444-dial plate. DETAILED DESCRIPTION
[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.
[0031] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.
[0032] In the description of this application, it should be noted that the terms "inner" and "outer" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the product of this application is typically placed when in use. These terms are intended solely to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" and the like are used solely for distinction and should not be construed as indicating or implying relative importance.
[0033] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed," "installed," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances. Example
[0034] This embodiment provides a glaucoma drainage tube implantation device 10, please refer to Figure 1-Figure 3 , which includes a shell body 11, a needle assembly 12, an injection rod 13 and a drive assembly 14.
[0035] The housing body 11 has a distal end 111 and a proximal end 112, and the needle assembly 12 is mounted on the distal end 111 of the housing body 11. The needle assembly 12 includes a needle hub 121 and an injection needle 122. The needle hub 121 is connected to the housing body 11 and can move axially along the housing body 11. One end of the injection rod 13 is disposed within the internal passage of the injection needle 122 to push the glaucoma drainage tube within the injection needle 122.
[0036] The drive assembly 14 includes a first pusher 141, a second pusher 142, a rotating wheel 143, and a drive member 144. The first pusher 141 and the second pusher 142 are slidably engaged with the housing body 11 and can slide axially along the housing body 11. The first pusher 141 is connected to the injection rod 13, and the second pusher 142 is connected to the needle seat 121. The central axis 1431 of the rotating wheel 143 is slidably engaged with the housing body 11, and the rotating wheel 143 can mesh with the first pusher 141 and the second pusher 142.
[0037] The driving member 144 is configured to drive the central axis 1431 of the rotating wheel 143 to rotate. The rotating wheel 143 rotates and causes the first pusher 141 to move toward the distal end 111 of the shell body 11 and the second pusher 142 to move toward the proximal end 112 of the shell body 11 .
[0038] The glaucoma drainage tube implantation device 10 of the present application drives the central axis 1431 of the rotating wheel 143 to rotate through the driving member 144. The rotation of the rotating wheel 143 causes the first pushing member 141 to move toward the distal end 111 of the shell body 11. The movement of the first pushing member 141 drives the injection rod 13 to move toward the distal end 111 of the shell body 11, thereby pushing the glaucoma drainage tube of the injection needle 122 outward from the injection needle 122; in addition, the rotation of the rotating wheel 143 causes the second pushing member 142 to move toward the proximal end 112 of the shell body 11. The movement of the second pushing member 142 drives the needle seat 121 to move along the axial direction of the shell body 11 and toward the proximal end 112 of the shell body 11, thereby causing the injection needle 122 to retract into the shell body 11, so that the glaucoma drainage tube is stably implanted into the eye.
[0039] In a possible embodiment, the first pusher 141 has a first rack 1411, the second pusher 142 has a second rack 1421, and part of the outer circumference of the rotating wheel 143 is provided with teeth. For example, 1 / 3 of the outer circumference of the rotating wheel 143 is continuously provided with teeth, or 2 / 5 of the outer circumference of the rotating wheel 143 is provided with teeth. The size of the area of the outer circumference of the rotating wheel 143 provided with teeth can be selected and set according to actual conditions. The rotating wheel 143 has a first state and a second state when it rotates. In the first state, the teeth of the rotating wheel 143 are engaged with the first rack 1411 and cause the first pusher 141 to have a tendency to move toward the distal end 111 of the shell body 11. In the second state, the teeth of the rotating wheel 143 are engaged with the second rack 1421 and cause the second pusher 142 to have a tendency to move toward the proximal end 112 of the shell body 11 (refer to Figure 2 and Figure 3 ).
[0040] When the driving member 144 drives the rotating wheel 143 to rotate, the rotating wheel 143 rotates so that the teeth of the rotating wheel 143 mesh with the first rack 1411. At this time, the second rack 1421 remains stationary. The rotating wheel 143 rotates, driving the first pusher 141 toward the distal end 111 of the housing body 11, causing the pusher to push the glaucoma drainage tube outward from the injection needle 122. When the teeth of the rotating wheel 143 rotate to the other side, the meshing relationship between the first rack 1411 and the teeth of the rotating wheel 143 ends. The first rack 1411 remains stationary, and the teeth of the rotating wheel 143 mesh with the second rack 1421. The rotating wheel 143 rotates, driving the second pusher 142 toward the proximal end 112 of the housing body 11, causing the needle seat 121, connected to the injection needle 122, to retract into the housing body 11, thereby stably implanting the glaucoma drainage tube into the eye.
[0041] Illustratively, the driving member 144 includes a dial 1444 coaxially connected to the rotating wheel 143. The dial 1444 is used to rotate the central axis 1431 of the rotating wheel 143. By manually rotating the dial 1444, the central axis 1431 of the rotating wheel 143 is driven to rotate, thereby controlling the first pusher 141 to move toward the distal end 111 of the housing body 11 and the second pusher 142 to move toward the proximal end 112 of the housing body 11.
[0042] Furthermore, the driving member 144 includes a sliding block 1442, and the dial 1444 is arranged on the sliding block 1442; the shell body 11 is provided with a through groove 113, the sliding block 1442 is installed in the through groove 113 and is slidably connected to the shell body 11, and the through groove 113 extends along the length direction of the shell body 11; the sliding block 1442 is configured to drive the central axis 1431 of the rotating wheel 143 to rotate while moving along the axial direction of the shell body 11 when sliding along the through groove 113 (refer to Figure 4 and Figure 5 ).
[0043] When the sliding block 1442 is pushed to move along the through slot 113, the rotating wheel 143 rotates, and the teeth of the rotating wheel 143 engage with the first rack 1411, which causes the first pusher 141 to move a distance. When the central axis 1431 of the rotating wheel 143 moves along the axial direction of the shell body 11, the first pusher 141 also moves a distance (refer to Figure 1 and Figure 2 ), so that the first pusher 141 has a longer travel distance, while the sliding block 1442 has a shorter travel distance, thereby pushing the sliding block 1442 to make the first pusher 141 travel a longer distance on the basis of a shorter travel distance, thereby facilitating the implantation of the glaucoma drainage tube into the eye and making the operation more convenient.
[0044] Exemplarily, the driving member 144 includes the above-mentioned sliding block 1442, a gear 1441 and a meshing member 1443 fixed in the shell body 11. The gear 1441 is coaxially connected to the central axis 1431 of the rotating wheel 143 and can be meshed with the meshing member 1443. The central axis 1431 of the rotating wheel 143 is rotatably connected to the sliding block 1442 (refer to Figure 6 ).
[0045] By sliding the sliding block 1442 along the through slot 113, the sliding block 1442 moves along the length direction of the shell body 11, so that the central axis 1431 of the rotating wheel 143 also moves along the length direction of the shell body 11; and, since the gear 1441 is coaxially connected to the central axis 1431 of the rotating wheel 143, the engaging member 1443 engages with the gear 1441, so that when the central axis 1431 of the rotating wheel 143 moves along the length direction of the shell body 11, the gear 1441 will rotate relative to the engaging member 1443 and simultaneously cause the central axis 1431 to rotate, thereby causing the central axis 1431 of the rotating wheel 143 to rotate while moving along the axial direction of the shell body 11 (refer to Figure 1 and Figure 2 Optionally, the engagement member 1443 includes a third rack, the length of which is set so that when the sliding block 1442 slides to the end of the through-slot 113 close to the distal end 111 of the shell body 11, the gear 1441 disengages from the third rack. When the sliding block 1442 slides to the end of the through-slot 113 close to the distal end 111 of the shell body 11, the gear 1441 disengages from the third rack. At this time, by rotating the dial 1444, the teeth of the rotating wheel 143 can be engaged with the second rack 1421, thereby retracting the injection needle 122 (refer to Figure 2 and Figure 3). For example, a rotating arrow mark is provided on the surface of the dial 1444 to indicate the dial direction. In other embodiments, the gear 1441 can be replaced with a worm gear, and the engagement member 1443 can be replaced with a worm gear, and the worm gear and the worm gear can be meshed with each other.
[0046] For example, the inner wall of the housing body 11 is provided with a first limiting groove 114, which extends along the length of the housing body 11. One end of the central axis 1431 of the rotating wheel 143 is rotatably connected to the sliding block 1442, and the other end is mounted in the first limiting groove 114 and slidably engages with the first limiting groove 114. The first limiting groove 114 limits the movement of the central axis 1431 of the rotating wheel 143, allowing the central axis 1431 to move more stably.
[0047] Optionally, the sliding block 1442 has grooves on opposite sides, and the shell body 11 at the through groove 113 is embedded in the groove and slidably cooperates with the groove. The shell body 11 and the groove of the sliding block 1442 can slidably cooperate, making the sliding block 1442 more stable when sliding in the through groove 113.
[0048] For example, the surface of the sliding block 1442 has anti-skid grooves (not shown in the figure). When the sliding block 1442 is pushed to move along the length direction of the through groove 113, the anti-skid grooves can increase the friction when the operator pushes the sliding block 1442, thereby increasing the stability of the sliding block 1442.
[0049] The housing body 11 includes an upper shell and a lower shell, which are separately provided and detachably connected, for example, by snap-fitting. The separate upper and lower shells facilitate assembly of the components of the optical eye drainage tube implant device.
[0050] The inner wall of the housing body 11 is connected to a first support seat 115 and a second support seat 116. Both the first support seat 115 and the second support seat 116 have through-holes extending along the length of the housing body 11. A first pusher 141 is disposed through the through-holes and supported by the first support seat 115, and the first pusher 141 is able to slide relative to the first support seat 115. A second pusher 142 is disposed through the through-holes and supported by the second support seat 116, and is able to slide relative to the second support seat 116.
[0051] Exemplarily, two first support seats 115 and two second support seats 116 are provided, and the first pusher 141 is supported by the two first support seats 115. When the driving wheel engages with the first pusher 141 and causes the first pusher 141 to move toward the distal end 111 of the shell body 11, the movement of the first pusher 141 is made more stable. The first pusher 141 has first limiting portions 1412 at both ends. The outer diameter of the first limiting portion 1412 is larger than the aperture of the through hole. The first limiting portions 1412 are located on both sides of the two first support seats 115 and are used to limit the first pusher 141 from escaping from the first support seats 115. The first limiting portions 1412 can not only limit the first pusher 141 from escaping from the first support seat 115, but also limit the movement length of the first pusher 141.
[0052] The second pusher 142 is supported by two second support seats 116. When the drive wheel engages with the second pusher 142 and causes the second pusher 142 to move toward the proximal end 112 of the housing body 11, the movement of the second pusher 142 is more stable. The second pusher 142 has second stoppers 1422 at both ends. The outer diameter of the second stoppers 1422 is larger than the diameter of the through hole. The second stoppers 1422 are used to limit the second pusher 142 from escaping from the second support seats 116. The second stoppers 1422 not only prevent the second pusher 142 from escaping from the second support seats 116, but also limit the length of movement of the second pusher 142.
[0053] Illustratively, the distance between the outer wall of the first pusher 141 and the inner wall of the through-hole of the first support seat 115 is 0.1 mm to 0.5 mm, for example, 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, or 0.5 mm. The distance between the outer wall of the first pusher 141 and the inner wall of the through-hole not only enables the first pusher 141 to slide within the through-hole of the first support seat 115, but also prevents the first rack 1411 from sliding within the through-hole when the teeth of the rotating wheel 143 are not engaged with the first rack 1411 of the first pusher 141, thereby preventing the glaucoma drainage tube from being pushed out of the injection needle 122 without the operator's intervention.
[0054] Illustratively, the distance between the outer wall of the second pusher 142 and the inner wall of the through-hole of the second support seat 116 is 0.1 mm to 0.5 mm, for example, 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, or 0.5 mm. The distance between the outer wall of the second pusher 142 and the inner wall of the through-hole not only enables the second pusher 142 to slide within the through-hole of the second support seat 116, but also prevents the second rack 1421 from sliding within the through-hole when the teeth of the rotating wheel 143 are not engaged with the second rack 1421 of the second pusher 142, thereby preventing the injection needle 122 from retracting into the housing body 11 when the operator is not operating.
[0055] In other embodiments, the first support seat 115 and the second support seat 116 may not be provided, and two second limiting grooves may be provided on the inner wall of the shell body 11. The first limiting member and the second limiting member are provided with a protrusion. The second limiting groove and the protrusion form a T-shape, and the protrusion is restricted from sliding in the second limiting groove. The second limiting groove not only restricts the protrusion from sliding therein, but also provides a certain degree of support due to the T-shape of the second limiting groove and the protrusion.
[0056] In some embodiments, the distal end 111 of the housing body 11 is provided with a slide groove, and the needle hub 121 is provided with a protrusion 1211. The protrusion 1211 is disposed in and slidably engages with the slide groove. When the second pusher 142 moves toward the distal end 111 of the housing body 11, the movement of the second pusher 142 drives the needle hub 121 to slide relative to the housing body 11. The protrusion 1211 of the needle hub 121 slidably engages with the slide groove of the housing body 11, allowing the needle hub 121 to move more smoothly.
[0057] In summary, the glaucoma drainage tube implantation device 10 of the present application drives the central axis 1431 of the rotating wheel 143 to rotate through the driving member 144. When the rotating wheel 143 rotates, it causes the first pushing member 141 to move toward the distal end 111 of the shell body 11. The movement of the first pushing member 141 drives the injection rod 13 to move toward the distal end 111 of the shell body 11, thereby pushing the glaucoma drainage tube of the injection needle 122 out of the injection needle 122; in addition, the rotation of the rotating wheel 143 causes the second pushing member 142 to move toward the proximal end 112 of the shell body 11. The movement of the second pushing member 142 drives the needle seat 121 to move along the axial direction of the shell body 11 and toward the proximal end 112 of the shell body 11, thereby causing the injection needle 122 to retract into the shell body 11, so that the glaucoma drainage tube is stably implanted into the eye.
[0058] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.
Claims
1. A glaucoma drainage tube implantation device, characterized in that: It includes: a shell body having a distal end and a proximal end; a needle assembly mounted at the distal end of the housing body, the needle assembly comprising a needle seat and an injection needle, the injection needle being mounted on the needle seat, the needle seat being connected to the housing body and being movable along the axial direction of the housing body; an injection rod, one end of which is disposed in the internal channel of the injection needle and is used for injecting the glaucoma drainage tube in the injection needle; as well as The drive assembly includes a first pusher, a second pusher, a rotating wheel and a drive member, the first pusher and the second pusher are slidably matched with the shell body and can slide along the axial direction of the shell body, the first pusher is connected to the injection rod, and the second pusher is connected to the needle seat; the central axis of the rotating wheel is slidably matched with the shell body, and the rotating wheel can engage with the first pusher and the second pusher, and the drive member is configured to drive the central axis of the rotating wheel to rotate, and the rotation of the rotating wheel causes the first pusher to move toward the distal end of the shell body, and the second pusher to move toward the proximal end of the shell body.
2. The glaucoma drainage tube implantation device according to claim 1, characterized in that: The first pushing member has a first rack, the second pushing member has a second rack, and a portion of the outer circumference of the rotating wheel is provided with teeth. The rotating wheel has a first state and a second state when rotating. In the first state, the teeth of the rotating wheel are engaged with the first rack and the first pushing member has a tendency to move toward the distal end of the shell body; in the second state, the teeth of the rotating wheel are engaged with the second rack and the second pushing member has a tendency to move toward the proximal end of the shell body.
3. The glaucoma drainage tube implantation device according to claim 2, characterized in that: The driving member includes a dial coaxially connected to the rotating wheel, and the dial is used to drive the central axis of the rotating wheel to rotate.
4. The glaucoma drainage tube implantation device according to claim 3, characterized in that: The driving member includes a sliding block, the shell body is provided with a through groove, the sliding block is installed in the through groove and is slidably connected to the shell body, and the through groove extends along the length direction of the shell body; the sliding block is configured to drive the central axis of the rotating wheel to rotate while moving axially along the shell body when sliding along the through groove, and the dial is arranged on the sliding block.
5. The glaucoma drainage tube implantation device according to claim 4, characterized in that: The driving member includes the sliding block, a gear, and an engaging member fixed in the shell body. The gear is coaxially connected to the central axis of the rotating wheel and can engage with the engaging member. The central axis of the rotating wheel is rotatably connected to the sliding block.
6. The glaucoma drainage tube implantation device according to claim 5, characterized in that: The engagement member includes a third rack, and the length of the third rack is set so that when the sliding block slides to an end of the through slot close to the distal end of the shell body, the gear is disengaged from the third rack.
7. The glaucoma drainage tube implantation device according to any one of claims 1 to 6, characterized in that: The inner wall of the shell body is connected to a first support seat and a second support seat, and the first support seat and the second support seat are both provided with a through hole extending along the length direction of the shell body, the first pushing member is passed through the through hole and supported on the first support seat, and can slide relative to the first support seat; the second pushing member is passed through the through hole and supported on the second support seat, and can slide relative to the second support seat.
8. The glaucoma drainage tube implantation device according to claim 7, characterized in that: Both ends of the first pushing member have first limiting portions, the outer diameter of the first limiting portion is larger than the aperture of the through hole, and the first limiting portion is used to limit the first pushing member from escaping from the first supporting seat.
9. The glaucoma drainage tube implantation device according to claim 7, characterized in that: The second pushing member has second limiting portions at both ends. The outer diameter of the second limiting portion is larger than the diameter of the through hole. The second limiting portion is used to limit the second pushing member from escaping from the second supporting seat.
10. The glaucoma drainage tube implantation device according to any one of claims 1 to 6, characterized in that: The shell body is provided with a sliding groove, and the needle seat is provided with a convex strip, and the convex strip is provided in the sliding groove and can be slidably matched with the sliding groove.