Glaucoma catheter implantation system

Abstract

The glaucoma catheter implanting system is characterized in that the glaucoma catheter implanting system comprises a shell and an implanting channel, and a safety mechanism and a transmission mechanism are arranged in the shell; one end of the implantation channel is connected with the front end of the shell, and the implantation channel is used for providing a containing cavity for a drainage catheter; the transmission mechanism is respectively connected with the implantation channel and the safety mechanism, and is used for pushing out the drainage catheter through the implantation channel and implanting the drainage catheter into a surgical site; and the safety mechanism is used for controlling the operation of the transmission mechanism. The problem that in the prior art, an implantation system is inconvenient to operate, so that the operation time is possibly prolonged is solved; and meanwhile, the device has the properties of preventing product false excitation, accurately positioning the drainage catheter, adjusting the angle of the inner tube, preventing eye tissues from being damaged when the implantation system is withdrawn and the like.

Description

Technical Field

[0001] The invention belongs to the field of medical instruments and relates to a glaucoma catheter implantation system. Background Art

[0002] The inside of the human eye is filled with aqueous humor. The normal dynamic flow of aqueous humor between various ocular tissues is an important indicator of eye health. Deviation from the normal aqueous humor flow can lead to various eye diseases. Usually, the direct cause of glaucoma is the blockage in the circulation pathway of the aqueous humor, which leads to pathological changes caused by increased intraocular pressure, but some patients also present with normal-tension glaucoma. In the prior art, drainage implants are usually implanted inside the human eye to improve the outflow channel of the aqueous humor, thereby reducing intraocular pressure to achieve the purpose of treatment.

[0003] The glaucoma catheter implantation system usually consists of three parts: drainage catheter, implantation system, and plug. The drainage catheter is pre-buried in the implantation channel of the implantation system (i.e., the inner cavity of the needle tube), and is eventually implanted into the surgical site to improve the aqueous humor outflow channel, thereby reducing intraocular pressure to achieve the purpose of treatment. The implantation system usually consists of a transmission mechanism, an implantation channel, and a safety device. Among them, the function of the transmission mechanism is to transport the drainage catheter to the surgical site; the implantation channel provides a cavity for the drainage catheter; and the safety device is designed to prevent the product from being accidentally triggered during transportation and surgery. The plug is placed at the tip of the implantation channel to block the drainage catheter and prevent it from falling off the implantation channel during transportation.

[0004] The transmission mechanism of the prior art realizes the conveying function by pushing a push button. Since the push button is large and the pushing stroke is long, it is not convenient to operate. In particular, during the pushing process, the large push button will resist certain parts of the holding hand, and the holding posture has to be adjusted before continuing the pushing operation.

[0005] The insurance and implantation system of the prior art are separated and need to be pulled out in a direction perpendicular to the axis of the implantation system before surgery, which is not convenient to perform with one hand. Summary of the invention

[0006] The present application provides a glaucoma catheter implantation system to solve the problem in the prior art that the implantation system is inconvenient to operate, which may lead to a prolonged operation time.

[0007] In order to solve the above technical problems, the technical solution provided by the present invention is:

[0008] A glaucoma catheter implantation system, characterized in that it comprises a housing and an implantation channel, wherein a safety mechanism and a transmission mechanism are arranged in the housing;

[0009] One end of the implantation channel is connected to the front end of the shell, and is used to provide a cavity for the drainage catheter;

[0010] The transmission mechanism is connected to the implantation channel and the safety mechanism respectively, and is used to push the drainage catheter through the implantation channel and implant it into the surgical site;

[0011] The safety mechanism is used to control the operation of the transmission mechanism.

[0012] Furthermore, the implantation channel includes an outer tube 5, an outer tube seat 6, an inner tube 7, and an inner tube seat 8; the outer tube seat 6 and the inner tube seat 8 are both fixed in the shell, one end of the outer tube 5 is connected to the outer tube seat 6, and one end of the inner tube 7 is connected to the front end of the inner tube seat 8 via the outer tube 5 and the outer tube seat 6.

[0013] Furthermore, the inner tube seat 8 is located at the central axis position in the shell and can rotate axially; the inner tube seat 8 is connected to the transmission mechanism, and the transmission mechanism controls the inner tube seat 8 to move forward and backward along the central axis, thereby pushing out the drainage catheter and implanting it into the surgical site.

[0014] Furthermore, the inner tube seat 8 is provided with a second protrusion 803, and the shell is provided with a special-shaped groove 106; by controlling the second protrusion 803 to rotate in the special-shaped groove 106, the inner tube seat 8 is controlled to rotate axially.

[0015] Furthermore, the transmission mechanism includes a gear 4, an inner tube push rod 10, an inner core 13, and an inner core push rod 9; the gear 4 is connected to the inner tube push rod 10 and the inner core push rod 9, and is used to drive the inner tube push rod 10 and the inner core push rod 9 to extend and retract; the inner tube push rod 10 is connected to the inner tube seat 8, and is used to control the inner tube seat 8 to move forward and backward along the central axis; the inner core push rod 9 is connected to the inner core 13, and the inner core 13 is used to extend into the inner tube 7 through the inner tube seat 8 and contact with the drainage catheter, and the inner core push rod 9 is used to control the drainage catheter to be pushed out and implanted into the surgical site by driving the inner core 13.

[0016] Furthermore, a first guide rail 401 and a second guide rail 402 are arranged on the gear 4, and the gear 4 includes a toothed part and a toothless part; the front end of the inner tube push rod 10 is connected to the inner tube seat 8, and the rear end of the inner tube push rod 10 is provided with a rack 1002 for cooperating with the teeth 403 of the toothed part; the first guide rail 401 is used to limit the position of the inner core push rod 9, and the second guide rail 402 and the teeth 403 are used to limit the position of the inner tube push rod 10; a first clamping point 901 and a second clamping point 902 are arranged on the inner core push rod 9, and the first clamping point 901 and the second clamping point 902 respectively run in the first guide rail 401, and the clamping point 1001 of the inner tube push rod 10 runs in the second guide rail 402; when the gear 4 is rotated, the rotational motion of the gear 4 is converted into the inner core push rod 9 and the inner tube Linear movement of the push rod 10; when the gear 4 is rotated forward to drive the first clamping point 901 and the second clamping point 902 of the inner core push rod 9 to move on the first guide rail 401, the toothless part corresponds to the inner tube push rod 10, thereby keeping the inner tube push rod 10 stationary and driving the inner core push rod 9 to move forward; after rotating a certain angle, the tooth 403 contacts the rack 1002 on the inner tube push rod 10, thereby driving the inner tube push rod 10 to move backward and the inner core push rod 9 no longer moves; when the gear 4 is rotated in the opposite direction, the tooth 403 contacts the rack 1002, driving the inner tube push rod 10 to move forward and the inner core push rod 9 does not move; when the tooth 403 disengages from the rack 1002, the inner tube push rod 10 no longer moves, and drives the inner core push rod 9 to move forward until it returns to its original position.

[0017] Furthermore, the shell is composed of an upper shell 1 and a lower shell 2, and the upper shell 1 is provided with a groove 102 for positioning; the safety mechanism includes a safety 3, and the safety 3 is provided with a claw 301 and a long strip structure 303, and the claw 301 is used to snap into the groove 102 to form a snap structure, and the claw 301 can move in the groove 102 along the axial direction of the implant system; the long strip structure 303 is used to lock or unlock the rotation of the gear 4.

[0018] Furthermore, the groove 102 is provided with a first groove 103 and a second groove 104 for fixing the claw 301, the first groove 103 and the second groove 104 are circular grooves, and the claw 301 is provided with a circular protrusion 302 that cooperates with the first groove 103 and the second groove 104; when the protrusion 302 is fixed to the second groove 104 at the proximal end of the groove 102, the long strip structure 303 abuts between the two teeth of the gear 4, thereby limiting the rotation of the gear 4; when the protrusion 302 is fixed to the first groove 103 at the distal end of the groove 102, the long strip structure 303 moves out of the gap between the two teeth of the gear 4, allowing the gear 4 to rotate.

[0019] Furthermore, it also includes a protection mechanism, which includes a plug 11 and a protection sleeve 12. The plug 11 and the front end of the inner tube 7 are in an interference fit with the axial hole, and the protection sleeve 12 and the outer tube seat 6 are in an interference fit with the axial hole.

[0020] Furthermore, an anti-skid structure 101 is provided on the outer surface of the front end of the shell; the anti-skid structure 101 is a striped structure with concave and convex intervals.

[0021] The present application provides an implantation system for implanting a glaucoma drainage catheter into a surgical site. The implantation system comprises a shell formed by assembling an upper shell and a lower shell. The shell is provided with a gripping portion, a safety mechanism, an implantation channel, a transmission mechanism and a protection mechanism.

[0022] Wherein, the front end surface of the grip portion has an anti-slip structure;

[0023] The safety mechanism includes a safety and an upper shell. The safety has a claw structure, and the upper shell has a positioning structure. The claw structure and the positioning structure together form a buckle structure, so that the safety and the upper shell can be assembled together to form a safety mechanism.

[0024] Among them, the positioning structure of the upper shell is composed of a number of separate grooves, and the safety claws can slide in these grooves;

[0025] Among them, there is a positioning structure on the groove of the upper shell, which can fix the insurance;

[0026] The implantation channel includes an outer tube, an outer tube seat, an inner tube, and an inner tube seat;

[0027] The outer tube is connected to the outer tube seat and fixed between the upper and lower shells through the outer tube seat;

[0028] Wherein, the inner tube is connected to the inner tube seat and fixed to the central channel of the shell through the inner tube seat;

[0029] The outer diameter of the inner tube seat is close to the inner diameter of the central passage of the upper and lower shells, and is a clearance fit, so that the inner tube seat is constrained at the central axis position of the upper and lower shells. Due to the clearance fit, the inner tube seat can rotate along the axial direction;

[0030] The inner tube seat is connected to the inner tube push rod through a buckle structure, and the inner tube seat can move along the central axis of the upper and lower shells with the inner tube push rod;

[0031] The implantation channel can have another deformation, and the components still include an outer tube, an outer tube seat, an inner tube, and an inner tube seat. The outer tube is not straight, but has a certain bending angle, such as any angle between 3 and 30 degrees. The outer tube is rigid, and the angle of the outer tube can be adjusted by rotating the outer tube seat so that the tip of the outer tube can support the eye tissue at the surgical site. The inner tube and the inner core are flexible and can be transformed with the transformation of the outer tube, thereby facilitating the implantation of the drainage catheter.

[0032] Wherein, the transmission mechanism includes gears, an inner tube push rod, an inner core, and an inner core push rod;

[0033] There are two guide rails on the gear, the first guide rail can limit the movement of the inner core push rod, and the second guide rail can limit the movement of the inner tube push rod;

[0034] Among them, there is a certain relative relationship between the sizes of the first guide rail and the second guide rail, which can make the movement of the inner core push rod and the inner tube push rod have a certain relative relationship, and this movement relationship is necessary to achieve the implantation of the drainage catheter;

[0035] Among them, the gear teeth are not all around the whole circle, and the position and number of the gear teeth are related to the position of the first and second guide rails, and this relationship is necessary to realize the mutual relationship between the movement of the inner core push rod and the inner tube push rod;

[0036] Among them, the position of the first guide rail on the gear is within a certain range, and this range can ensure that the resistance when rotating the gear is not so great;

[0037] The gear teeth of the gear match the teeth of the rack on the inner tube push rod, and the rotating gear can move the inner tube push rod, thereby converting the rotational motion into linear motion;

[0038] Among them, the outer diameter of the inner core push rod is close to the inner diameter of the upper shell limiting structure and the inner diameter of the inner tube push rod limiting structure, and they are clearance fit, so the inner core push rod can perform linear motion along the central axis of the implant system;

[0039] Among them, the outer diameter of the inner tube push rod is close to the inner diameter of the upper shell limiting structure, and they are clearance fit, so the inner tube push rod can perform linear motion along the central axis of the implant system;

[0040] The limiting structure of the lower shell can limit the distance of linear movement of the inner tube push rod along the central axis of the implant system;

[0041] The inner core is fixed together with the inner core push rod and can move with the inner core push rod, and the inner tube seat is fixed together with the inner tube push rod and can move with the inner tube push rod;

[0042] Among them, there are positioning columns and positioning holes on the upper and lower shells for fixing the relative positions of the two;

[0043] The protection mechanism includes a plug and a protective sleeve. The plug and the tip of the inner tube are in an interference fit with the shaft hole, and the protective sleeve and the outer tube seat are in an interference fit with the shaft hole.

[0044] When the protective cover is assembled onto the outer tube seat, the protective cover will contact the plug and limit the movement of the plug in the axial direction of the upper and lower shells, preventing the plug from falling off during transportation, thereby preventing the drainage catheter from falling out of the implantation channel.

[0045] The key points of the present invention include:

[0046] 1. A convenient, one-step-operated transmission mechanism that realizes the function of pushing a drainage catheter. The transmission mechanism includes a gear, an inner core, an inner core push rod, and an inner tube push rod. The inner tube push rod has a rack structure, and the gear has a first guide rail and a second guide rail. The first guide rail of the gear can limit the position of the inner core push rod, and the second guide rail and the teeth of the gear can limit the position of the inner tube push rod. The rotational motion of the gear can be converted into a linear motion of the inner core push rod and the inner tube push rod with a certain relationship. The inner core is fixed together with the inner core push rod and can move with the inner core push rod. The inner tube seat 8 is connected to the inner tube push rod 10, and the movement of the inner tube seat 8 is controlled to drive the movement of the inner tube 7. The inner tube 7 moves backward and retracts into the outer tube 5, which makes the drainage catheter 14 more exposed and facilitates 14 to fall off from the implantation channel; the inner tube 7 moves forward to reset the drainage catheter, of course, this reset cannot reset the drainage catheter, because the drainage catheter is not connected to other components and is only in contact with the inner core 13. The inner core 13 can only push the drainage catheter forward and cannot pull the drainage catheter backward to retreat.

[0047] 2. A safety mechanism that is assembled as a whole with the implant system and can be unlocked / locked with one hand along the axial direction of the implant system. The safety has a claw structure, and the upper shell has a positioning structure. The claw structure has a protruding structure for fixing, preferably in a cylindrical shape, and the positioning structure has a groove structure for fixing, preferably in a cylindrical shape. The claw structure of the safety and the positioning structure of the upper shell are assembled into a buckle structure, so that the safety can be moved on the upper shell and fixed in position through the cooperation of the protruding and groove structures, thereby realizing the unlocking / locking function.

[0048] 3. A structure to prevent the needle tip from retreating and prevent the product from being accidentally triggered. When the safety is unlocked, when an axial force is applied to the needle tip, such as puncture resistance, the needle tip will not retreat. The structure includes a gear and an inner tube push rod. The gear has a second guide rail, and the inner tube push rod has a card point structure. Without manually rotating the gear, the second track of the gear can limit the axial displacement of the inner tube push rod card point, thereby achieving the purpose of preventing the product from being accidentally triggered.

[0049] 4. A positioning structure that achieves precise positioning. The lower shell has a positioning structure that can limit the linear movement distance of the inner tube push rod.

[0050] The advantages of the present invention are as follows:

[0051] 1. Compared with the prior art, the present invention achieves the purpose of pushing the drainage catheter by rotating the gear of the transmission mechanism, while the prior art achieves this by pushing a push button. The gear rotation stroke covers a smaller active area than the push button push stroke, making it easier to operate; and the push button of the prior art is larger, which may conflict with certain parts of the holding hand during the pushing process, and the holding state has to be changed before continuing to push, which will prolong the operation time.

[0052] 2. Compared with the prior art, the safety and implant system in the present invention are assembled as a whole, and are unlocked parallel to the axis of the implant system, which is convenient for one-handed operation. The safety and implant system of the prior art are separated, and need to be pulled out in a direction perpendicular to the axis of the implant system before surgery, which is not convenient for one-handed operation.

[0053] 3. In addition to the improvements over the prior art, the present invention also has the properties of preventing mis-activation of the product, accurately positioning the drainage catheter, adjusting the angle of the inner tube, and preventing damage to eye tissue when withdrawing the implant system. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 Schematic diagram of the three-dimensional structure of the implant system.

[0055] Figure 2 It is a schematic diagram of the three-dimensional structure of the insurance and upper shell components.

[0056] Figure 3 This is a cross-sectional view after the safety, upper shell and gear are assembled.

[0057] Figure 4 It is a three-dimensional structural schematic diagram of the outer tube and outer tube seat after assembly, and a three-dimensional structural schematic diagram of the upper shell and lower shell slots.

[0058] Figure 5 It is a schematic diagram of the three-dimensional structure after the inner tube and the inner tube seat are assembled, and a partial enlarged schematic diagram of the tip of the inner tube.

[0059] Figure 6 This is a partial cross-sectional view after the outer tube, outer tube seat, inner tube, inner tube seat, upper shell and lower shell are assembled.

[0060] Figure 7 It is a schematic diagram of the three-dimensional structure after the gear, inner core push rod, inner tube push rod and inner tube seat are assembled.

[0061] Figure 8 It is a three-dimensional structural schematic diagram of the inner core push rod, inner core, and inner tube push rod components.

[0062] Fig. 9 It is a schematic diagram of the three-dimensional structure after the inner tube push rod and the inner tube seat are assembled.

[0063] Fig.10 It is a partial cross-sectional view of the plug, protective sleeve, outer tube, inner tube, outer tube seat, upper shell, and lower shell, as well as a partial enlarged view of the protective sleeve, plug, inner core, inner tube, outer tube, and drainage catheter.

[0064] Fig.11 It is a partial cross-sectional view of the outer tube, outer tube seat, standard needle (including inner tube, inner tube seat), upper shell and lower shell after assembly.

[0065] Fig.12 Schematic diagram of the three-dimensional structure of a standard needle. DETAILED DESCRIPTION

[0066] The present invention is further described in detail below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention but not to limit the scope of the present invention.

[0067] Embodiment 1:

[0068] like Figure 1 As shown, it is a schematic diagram of the three-dimensional structure of the present invention, wherein the surfaces of the proximal gripping parts of the upper shell 1 and the lower shell 2 have anti-slip structures 101. Preferably, the anti-slip structure 101 is in the shape of concave and convex stripes. The anti-slip structure 101 may also be a large curved contour or other shapes, which is not limited in the present application.

[0069] like Figure 2-3 As shown, Figure 2 It is a schematic diagram of the three-dimensional structure of the safety 3 and the upper shell 1. Preferably, the locking structure of the safety 3 is a claw 301 of the shape shown in the figure, and the positioning structure of the upper shell 1 is a groove 102 as shown in the figure. The claw 301 can be inserted into the groove 102 to form a buckle structure. Since the groove 102 has a certain length, the claw 301 can move in the groove 102 along the axial direction of the implant system.

[0070] The groove 102 has a first groove 103 and a second groove 104 for fixing the claw 301. Preferably, the first groove 103 and the second groove 104 are circular, and the claw 301 has a circular protrusion 302 that matches the first groove 103 and the second groove 104. Preferably, the diameter of the first groove 103 and the second groove 104 is larger than the diameter of the protrusion 302. When the protrusion 302 is located in the first groove 103 and the second groove 104, the claw 301 is in a relaxed state, which can avoid the failure of the function of the insurance 3 after the implant system is placed for a long time.

[0071] Figure 3It is a cross-sectional view of the safety 3, upper shell 1, and gear 4 after assembly. When the protrusion 302 of the safety 3 is fixed in the second groove 104 at the proximal end of the groove 102, the long strip structure 303 of the safety 3 will abut between the two teeth of the gear 4, thereby limiting the rotation of the gear 4, which is the locked state of the implant system. When the protrusion 302 of the safety 3 is fixed in the first groove 103 at the distal end of the groove 102, the long strip structure 303 of the safety 3 will move out of the gap between the two teeth of the gear 4, so that the gear 4 can rotate, which is the unlocked state of the implant system.

[0072] like Figures 4 to 6 As shown, Figure 4 It is a schematic diagram of the three-dimensional structure of the outer tube 5, the outer tube seat 6, the upper shell 1 and the lower shell 2. Figure 6 1 is a partial cross-sectional view of the outer tube 5, the outer tube seat 6, the inner tube 7, the inner tube seat 8, the upper shell 1 and the lower shell 2 after assembly. The outer tube 5 and the outer tube seat 6 are connected together through the hole-shaft fit. Preferably, as Figure 6 As shown, the outer tube seat protrusion 601 of the outer tube seat 6 limits the insertion depth of the outer tube 5, which will facilitate the positioning of the outer tube 5 in the outer tube seat 6 during the production process, thereby improving production efficiency.

[0073] Preferably, the upper shell 1 and the lower shell 2 have positioning columns 107 and positioning holes 205 for fixing their relative positions. The shape of the positioning columns can be circular, polygonal (such as hexagonal), and the positioning structure can also be a buckle or other structure, which is not limited in the present application.

[0074] The circumferential groove 602 of the outer tube base 6 is embedded in the upper shell protrusion 104 of the upper shell 1 and the lower shell protrusion 201 of the lower shell 2, and the first circumferential protrusion 603 and the grooves 105 and 202 are also embedded in the upper shell 1 and the lower shell 2, so that the outer tube base 6 is fixed in the upper shell 1 and the lower shell 2.

[0075] Figure 5 1 is a three-dimensional structural diagram of the inner tube 7, the inner tube seat 8 and the upper shell 1. The inner tube 7 and the inner tube seat 8 are connected together through a hole axis. Preferably, as Figure 6 As shown, the first protrusion 801 of the inner tube seat 8 limits the insertion depth of the inner tube 7, which will facilitate the positioning of the inner tube 7 in the inner tube seat 8 during the production process, thereby improving production efficiency.

[0076] The setting of the needle tip angle 703 of the inner tube 7 helps to reduce the puncture resistance and helps to fit the tissue structure during the puncture process. Preferably, the angle value is 5 to 30 degrees.

[0077] Both sides of the needle tip of the inner tube 7 are chamfered 704, which will help reduce the puncture resistance.

[0078] The axial diameter 802 of the inner tube seat 8 is close to the hole diameter 604 of the outer tube seat 6 and is a clearance fit, which will prevent the inner tube seat 8 from deviating too much from the central axis during the axial movement of the implant system, thereby reducing the resistance of product operation.

[0079] The second protrusion 803 of the inner tube seat 8 can rotate in the special-shaped groove 1061 of the upper shell 1, and the oblique opening 701 of the inner tube 7 can be rotated to different angles to facilitate the operation.

[0080] like Figure 6 As shown in the figure, the inner cavity 702 of the inner tube 7 provides an implantation channel for the drainage catheter 14. During the puncture process with the inner tube 7, the outer tube 5 sleeved on the outer side of the inner tube 7 provides a certain rigid protection for the inner tube 7. After the drainage catheter 14 is placed at the surgical site, the inner tube 7 will be withdrawn into the inner cavity 501 of the outer tube 5, avoiding the oblique opening 701 of the inner tube 7 from causing damage to the eye tissue during the withdrawal of the implantation system.

[0081] like Figures 7-8 As shown, Figure 7 It is a three-dimensional structural diagram after the gear 4, the inner core push rod 9, the inner tube push rod 10, and the inner tube seat 8 are assembled. Figure 8It is a three-dimensional structural diagram of the inner core push rod 9, the inner core 13, and the inner tube push rod 10. The card points 901 and 902 of the inner core push rod 9 are restricted in the first guide rail 401 of the gear 4, and the card point 1001 of the inner tube push rod 10 is restricted in the second guide rail 402 of the gear 4. The inner core 13 is fixed in the hole 903 of the inner core push rod 9 by gluing, injection molding or other methods. When the gear 4 is rotated, the rotational motion of the gear 4 can be converted into the linear motion of the inner core push rod 9 and the inner tube push rod 10, and there is a certain relative relationship between their linear motions. When the gear 4 rotates to a certain angle, the tooth 403 of the gear 4 will contact the rack 1002 of the inner tube push rod 10, thereby pushing the inner tube push rod 10 to move in the opposite direction (relative to the movement direction of the inner core push rod 9); when the gear 4 rotates forward, the first card point 901 and 902 of the inner core push rod 9 are driven by the gear 4. 901, when the second clamping point 902 moves on the first guide rail 401, the toothless part corresponds to the inner tube push rod 10, thereby keeping the inner tube push rod 10 stationary and driving the inner core push rod 9 to move forward; after rotating a certain angle, the tooth 403 contacts the rack 1002 on the inner tube push rod 10, thereby driving the inner tube push rod 10 to move backward and the inner core push rod 9 no longer moves; when the gear 4 is rotated in the opposite direction, the tooth 403 contacts the rack 1002, driving the inner tube push rod 10 to move forward and the inner core push rod 9 does not move; when the tooth 403 is separated from the rack 1002, the inner tube push rod 10 no longer moves, and drives the inner core push rod 9 to move forward until it returns to its original position. The above-mentioned movements of all the gears 4, the inner push rod 9, and the inner tube push rod 10 are necessary for implanting the drainage catheter 14. The drainage catheter 14 is assembled into the inner cavity 702 from the tip of the inner tube 7. When in use, the inner core push rod 9 moves forward with the inner core to push the drainage catheter 14 forward.

[0082] Preferably, the movement distance of the inner core push rod 9 is 1 to 5 mm, and the movement distance of the inner tube push rod 10 is 3 to 12 mm.

[0083] Preferably, the depth of the hole 903 of the inner core push rod 9 is fixed, and the inner core 13 only needs to be inserted to the bottom and fixed without additional positioning, which will improve production efficiency. Preferably, the depth of the hole 903 is 2 to 6 mm.

[0084] Preferably, the tip of the inner core 13 can be made into a round head 1301, which will reduce the probability of damaging the drainage catheter 14.

[0085] Figure 4 In the embodiment, the limiting structures 203 and 204 of the lower shell 2 can limit the distance that the inner tube push rod 10 moves forward and backward, thereby achieving precise positioning.

[0086] Fig. 9It is a schematic diagram of the three-dimensional structure of the inner tube push rod 10 and the inner tube seat 8. The through groove 1003 of the inner tube push rod 10 and the third protrusion 804 of the inner tube seat 8 together form a snap-fit ​​structure, and the inner tube seat 8 can rotate in the circumferential direction.

[0087] like Fig.10 As shown, it is a partial cross-sectional view of the plug 11, the protective sleeve 12, the outer tube 5, the inner tube 7, and the outer tube seat 6, and a partial enlarged view of the protective sleeve 12, the plug 11, the inner core 13, the inner tube 7, the outer tube 5, and the drainage catheter 14. The plug 11 is a thin and long needle that can be inserted into the inner cavity 702 of the inner tube 7, and the protective sleeve 12 can be inserted into the tip 604 of the outer tube seat 6 and form an interference fit with the second circumferential protrusion 605. At the same time, the protective sleeve 12 can resist the tip 1101 of the plug 11 in the interior 1201 to prevent the plug 11 from falling off during the transportation of the product, thereby preventing the drainage catheter 14 from falling off.

[0088] In order to facilitate product processing, the assembly of the inner tube 7 and the inner tube seat 8 can be a standard needle 15 (including the inner tube 7 and the inner tube seat 8). The inner tube seat 8 of the standard needle 15 is connected to the angle adjuster 18 through a snap-fit ​​structure, and the angle adjuster 18 is connected to the structure 1003 of the inner tube push rod 10 through a snap-fit ​​structure similar to 804. This design can reduce the bonding connection process between the inner tube 7 and the inner tube seat 8 and improve product efficiency. Since the volume of the standard needle 15 is relatively large, the size of the outer tube seat 6 should be reduced accordingly. The outer tube seat 6 and the inner tube seat 8 have structures 601 and 801 for positioning the outer tube 5 and the inner tube 7, as shown in the attached Fig.11 , Fig.12 shown.

[0089] Although the specific embodiments of the present invention are disclosed for the purpose of illustration, the purpose is to help understand the content of the present invention and implement it accordingly, those skilled in the art will understand that various substitutions, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the present invention should not be limited to the content disclosed in the best embodiment, and the scope of the present invention is subject to the scope defined in the claims.

Claims

1. A glaucoma catheter implantation system, characterized in that: It comprises a shell and an implantation channel, wherein a safety mechanism and a transmission mechanism are arranged in the shell; One end of the implantation channel is connected to the front end of the shell, and is used to provide a cavity for the drainage catheter; The transmission mechanism is connected to the implantation channel and the safety mechanism respectively, and is used to push the drainage catheter through the implantation channel and implant it into the surgical site; The safety mechanism is used to control the operation of the transmission mechanism.

2. The glaucoma catheter implantation system according to claim 1, characterized in that: The implantation channel comprises an outer tube (5), an outer tube seat (6), an inner tube (7), and an inner tube seat (8); the outer tube seat (6) and the inner tube seat (8) are both fixed in the shell, one end of the outer tube (5) is connected to the outer tube seat (6), and one end of the inner tube (7) is connected to the front end of the inner tube seat (8) via the outer tube (5) and the outer tube seat (6).

3. The glaucoma catheter implantation system according to claim 2, characterized in that: The inner tube seat (8) is located at the central axis position in the shell and can rotate along the axial direction; the inner tube seat (8) is connected to the transmission mechanism, and the transmission mechanism controls the inner tube seat (8) to move forward and backward along the central axis, so as to push out the drainage catheter and implant it into the surgical site.

4. The glaucoma catheter implantation system according to claim 2 or 3, characterized in that: The inner tube seat (8) is provided with a second protrusion (803), and the shell is provided with a special-shaped groove (106); by controlling the second protrusion (803) to rotate in the special-shaped groove (106), the inner tube seat (8) is controlled to rotate along the axial direction.

5. The glaucoma catheter implantation system according to claim 2 or 3, characterized in that: The transmission mechanism comprises a gear (4), an inner tube push rod (10), an inner core (13), and an inner core push rod (9); the gear (4) is connected to the inner tube push rod (10) and the inner core push rod (9) and is used to drive the inner tube push rod (10) and the inner core push rod (9) to extend and retract; the inner tube push rod (10) is connected to the inner tube seat (8) and is used to control the inner tube seat (8) to move forward and backward along the central axis; the inner core push rod (9) is connected to the inner core (13), the inner core (13) is used to extend into the inner tube (7) through the inner tube seat (8) and contact with the drainage catheter, and the inner core push rod (9) is used to control the drainage catheter to be pushed out and implanted into the surgical site by driving the inner core (13).

6. The glaucoma catheter implantation system according to claim 5, characterized in that: The gear (4) is provided with a first guide rail (401) and a second guide rail (402); the gear (4) includes a toothed portion and a toothless portion; the front end of the inner tube push rod (10) is connected to the inner tube seat (8); the rear end of the inner tube push rod (10) is provided with a rack (1002) for cooperating with the teeth (403) of the toothed portion; the first guide rail (401) is used to limit the position of the inner core push rod (9); the second guide rail (402) and the teeth (403) are ... 03) is used to limit the position of the inner tube push rod (10); the inner core push rod (9) is provided with a first clamping point (901) and a second clamping point (902), the first clamping point (901) and the second clamping point (902) respectively run in the first guide rail (401), and the clamping point (1001) of the inner tube push rod (10) runs in the second guide rail (402); when the gear (4) is rotated, the rotational motion of the gear (4) is converted into the inner core push rod (9) and the inner tube push rod (10). The push rod (10) is linearly moved; when the gear (4) is rotated in the positive direction to drive the first clamping point (901) and the second clamping point (902) of the inner core push rod (9) to move on the first guide rail (401), the toothless portion corresponds to the inner tube push rod (10), thereby keeping the inner tube push rod (10) stationary while driving the inner core push rod (9) to move forward; after rotating a certain angle, the teeth (403) and the rack (1002) on the inner tube push rod (10) are aligned. When the gear (4) rotates in the reverse direction, the tooth (403) contacts the rack (1002), driving the inner tube push rod (10) to move forward and the inner core push rod (9) does not move; when the tooth (403) disengages from the rack (1002), the inner tube push rod (10) stops moving and drives the inner core push rod (9) to move forward until it returns to its original position.

7. The glaucoma catheter implantation system according to claim 1, 2 or 3, characterized in that: The shell is composed of an upper shell (1) and a lower shell (2), wherein the upper shell (1) is provided with a groove (102) for positioning; the safety mechanism comprises a safety (3), wherein the safety (3) is provided with a clamping claw (301) and a long strip structure (303), wherein the clamping claw (301) is used to clamp into the groove (102) to form a buckle structure, and the clamping claw (301) can move in the groove (102) along the axial direction of the implant system; and the long strip structure (303) is used to lock or unlock the rotation of the gear (4).

8. The glaucoma catheter implantation system according to claim 7, characterized in that: The groove (102) is provided with a first groove (103) and a second groove (104) for fixing the claw (301); the first groove (103) and the second groove (104) are circular grooves; the claw (301) is provided with a circular protrusion (302) that cooperates with the first groove (103) and the second groove (104); when the protrusion (302) is fixed to the second groove (104) at the proximal end of the groove (102), the long strip structure (303) abuts between two teeth of the gear (4), thereby limiting the rotation of the gear (4); when the protrusion (302) is fixed to the first groove (103) at the distal end of the groove (102), the long strip structure (303) moves out of the gap between the two teeth of the gear (4), allowing the gear (4) to rotate.

9. The glaucoma catheter implantation system according to claim 1, characterized in that: It also includes a protection mechanism, which includes a plug (11) and a protection sleeve (12). The plug (11) and the front end of the inner tube (7) are in an interference fit with the axial hole, and the protection sleeve (12) and the outer tube seat (6) are in an interference fit with the axial hole.

10. The glaucoma catheter implantation system according to claim 1, characterized in that: An anti-slip structure (101) is arranged on the outer surface of the front end of the shell; the anti-slip structure (101) is a striped structure with concave and convex intervals.

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