CN115414179A - Glaucoma drainage tube implantation system - Google Patents
Glaucoma drainage tube implantation system Download PDFInfo
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- CN115414179A CN115414179A CN202211375434.0A CN202211375434A CN115414179A CN 115414179 A CN115414179 A CN 115414179A CN 202211375434 A CN202211375434 A CN 202211375434A CN 115414179 A CN115414179 A CN 115414179A
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- 208000010412 Glaucoma Diseases 0.000 title claims abstract description 24
- 238000002513 implantation Methods 0.000 title claims abstract description 22
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- 239000007924 injection Substances 0.000 claims abstract description 43
- 230000000670 limiting effect Effects 0.000 claims description 48
- 230000007246 mechanism Effects 0.000 claims description 23
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
- A61F9/007—Methods or devices for eye surgery
- A61F9/00781—Apparatus for modifying intraocular pressure, e.g. for glaucoma treatment
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
- A61F9/007—Methods or devices for eye surgery
- A61F9/00736—Instruments for removal of intra-ocular material or intra-ocular injection, e.g. cataract instruments
Abstract
The invention relates to the technical field of medical instruments, and discloses a glaucoma drainage tube implanting system which comprises an outer shell, wherein the outer shell comprises an upper shell and a lower shell, the upper shell is connected with the lower shell in a closing manner, one end of the lower shell is provided with a guide cylinder, a through channel is arranged in the guide cylinder, one end of the guide cylinder is connected with a needle seat, and the needle seat is connected with a puncture needle tube; a push injection component is arranged in the outer shell; defining one end close to the puncture needle tube as a front end and one end far away from the puncture needle tube as a rear end, wherein the push injection assembly comprises a dial wheel, a sliding rod and a push injection rod, the dial wheel is rotatably connected with the upper shell, the middle part of the sliding rod is provided with a sliding groove perpendicular to the push injection direction, the sliding groove is slidably connected on an eccentric shaft of the dial wheel, and the periphery of the front end of the sliding rod is matched with a channel of the lower shell; the front end of the sliding rod is connected with the injection rod, and the front end of the injection rod is arranged in the puncture needle tube. The injection method is simple, stable, safe and reliable, greatly simplifies the operation steps of the glaucoma drainage tube implantation operation, and reduces the operation difficulty.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a glaucoma drainage tube implantation system.
Background
The pathological increase of intraocular pressure is a main risk factor of glaucoma, the reason of the increase of intraocular pressure of glaucoma is that the dynamic balance of the aqueous humor circulation is destroyed, the increased intraocular pressure causes optic nerve damage through two mechanisms of mechanical compression and optic nerve ischemia, and the longer the duration of the increase of intraocular pressure is, the more serious the damage of optic function is, resulting in irreversible visual field loss. In the treatment of glaucoma clinically, lowering intraocular pressure is considered to be the only treatment currently effective in controlling disease progression. Methods for reducing intraocular pressure generally include drug, laser and surgical treatments, while anti-glaucoma surgical treatment is an essential and ultimate treatment for the treatment of this disease. Currently, the traditional anti-glaucoma operation applied in clinic is trabeculectomy, in which a part of trabecular tissue is cut to establish a passage from the inside of an eye to the subconjunctival part outside the eye wall, so that aqueous humor in the eye flows out of the passage to achieve the effect of lowering intraocular pressure, and complications such as anterior chamber and choroidal detachment, bleb fibrosis, bleb infection and the like caused by the operation are inevitable problems. In order to improve the operation treatment mode, a novel minimally invasive drainage device implantation operation is rapidly developed, one end of the drainage device is guided and injected into the anterior chamber of the eye by using an implantation system, the other end of the drainage device is placed under the cornea, and an aqueous humor outflow channel is reconstructed by using the implantation drainage device, so that the intraocular pressure is reduced, and the purpose of treatment is achieved.
Chinese invention patent CN 105434103B (published as 2017.07.07) discloses a miniature glaucoma drainage implantation device and system, wherein the implantation device comprises a bolus injection component, and the bolus injection component further comprises: the needle comprises a front needle section positioned at the foremost end of the device and a rear needle section except the front needle section, and the rear needle section comprises a partial rear section surrounded by the sleeve and a residual rear needle section which is extended from the interior of the sleeve and surrounded by the inner barrel; the front end of the inner cylinder is connected with the tail end of the sleeve, a tube cavity is formed around the rear section of the residual needle head and the inner injection rod, a tube cavity is formed around the injection rod of the tail end closing part of the inner cylinder, and the tail end of the inner cylinder is closed; the water injection device further comprises a water injection assembly and a protrusion adjusting and controlling small button which is arranged at two ends of the wall of the inner barrel, connected with the inner injection rod and protrudes out of the outer surface of the outer barrel, wherein the protrusion adjusting and controlling small button adjusts the inner injection rod to move forwards or backwards. When in use, the following problems exist: firstly, the push rod is pressed by the thumb, and different convex regulating buttons are pushed simultaneously to realize that the inner push rod moves forwards or backwards to push the implant, so that the operation is complex; secondly, the pushing stability is controlled by the hand feeling of a doctor, so that the problem of too high pushing speed in the operation process can be caused; in addition, no locking device is arranged on the internal injection rod, so that misoperation cannot be prevented in the operation process, and potential safety hazards exist.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides the glaucoma drainage tube implantation system which is simple and stable in injection mode and accurate and safe in positioning.
In order to achieve the technical purpose, the invention adopts the technical scheme that:
a glaucoma drainage tube implanting system comprises an outer shell, wherein the outer shell comprises an upper shell and a lower shell, the upper shell is connected with the lower shell in a closed mode, one end of the lower shell is provided with a guide cylinder, a through passage is arranged in the guide cylinder, one end of the guide cylinder is connected with a needle seat, and the needle seat is connected with a puncture needle tube; a push injection component is arranged in the outer shell; defining one end close to the puncture needle tube as a front end and one end far away from the puncture needle tube as a rear end, wherein the pushing assembly comprises a dial wheel, a sliding rod and a pushing rod, the dial wheel is rotatably connected with the upper shell, the middle part of the sliding rod is provided with a sliding groove perpendicular to the pushing direction, the sliding groove is slidably connected on an eccentric shaft of the dial wheel, and the periphery of the front end of the sliding rod is matched with a channel of the lower shell; the front end of the sliding rod is connected with the injection rod, and the front end of the injection rod is arranged in the puncture needle tube.
Furthermore, a resistance increasing structure is arranged between the sliding rod and the lower shell.
Furthermore, the front end of the sliding rod and the lower shell channel matching section are provided with at least one O-shaped ring, one side of the O-shaped ring is clamped in the groove on the sliding rod, and the other side of the O-shaped ring is in interference fit with the inner wall of the lower shell front end channel.
Furthermore, the periphery of the front end of the sliding rod is sleeved with a spring, the rear end of the spring is fixed on the sliding rod, the front end of the spring is a free end, the sliding rod is pushed forwards to a positioning position and then moves, and the front end of the spring can abut against the end face of the lower shell channel.
Furthermore, the pushing and injecting assembly is also provided with a locking mechanism, and the locking mechanism is arranged in the upper shell and is positioned behind the shifting wheel; the lower end of the locking mechanism is connected with the sliding rod to limit the movement of the sliding rod.
Furthermore, the locking mechanism comprises a screw cap, a limiting block, a locking rod, a bottom plate and a second spring; the limiting block is in a hollow cylindrical shape, the upper part of the limiting block is movably clamped at the periphery of the screw cap, and the bottom of the limiting block is connected with the bottom plate; an inner hole is formed in the screw cap, and a spiral surface step limiting groove is formed in the inner side wall of the inner hole; the locking rod is in a step column shape, the upper end of the locking rod is movably connected in an inner hole of the screw cap, a protruding shaft perpendicular to the axis is arranged at the upper part of the locking rod and connected in the spiral surface step limiting groove, the middle section of the locking rod is clamped between the screw cap and the bottom plate, the lower end of the locking rod penetrates through the bottom plate, a lug is arranged at the middle section of the locking rod, a second spring is sleeved on the periphery below the lug, one end of the second spring abuts against the lower end surface of the lug, and the other end of the second spring abuts against the upper surface of the bottom plate; the periphery of the limiting block is connected with a clamping hook in the upper shell, and the top of the screw cap protrudes out of the upper shell; the rear end of the sliding rod is provided with a limiting groove and a limiting step, the lower end of the locking rod is clamped in the limiting step in a locking state, and the lower end of the locking rod is clamped in the limiting groove in an unlocking state.
Furthermore, the periphery of the upper portion of the lug of the locking rod is sleeved with a third spring, one end of the third spring is abutted to the upper end face of the lug, and the other end of the third spring is abutted to the lower end face of the screw cap.
Furthermore, a protective cap is movably connected to the needle base and composed of a self-adaptive needle plug and a protective sleeve, and the self-adaptive needle plug is made of flexible metal materials.
Furthermore, the outer wall of the puncture needle tube is attached with a silicone oil coating.
Furthermore, the outer surface of the lower shell is provided with a finger groove which is convenient to hold, and a plurality of anti-skidding grooves are formed in the finger groove.
Furthermore, the needle seat and the lower shell are connected by adopting a standard luer conical joint and are locked by a buckle.
Compared with the prior art, the invention has the beneficial effects that:
1) In the implantation system, the push injection assembly adopts the crank pulley mechanism consisting of the dial wheel and the sliding rod, can finely control the linear displacement pushed by the push injection rod, is favorable for the stability of push injection, and avoids secondary damage caused by excessive puncture of the push injection rod into intraocular tissues.
2) The invention further sets a resistance increasing structure, which can increase the injection damping and the smoothness, on the other hand, after the sliding rod moves to a certain distance, the spring on the sliding rod is compressed, which can further increase the resistance, feed back the pushing stroke for the operator, and improve the simplicity and the safety of the operation.
3) The injection assembly is provided with the locking mechanism, and the implantation system can be locked after the product is pre-assembled (the drainage tube is arranged in the implantation system), so that the influence on the operation link caused by the dislocation of the drainage tube due to the misoperation before the operation is prevented, the push resistance can be adjusted after the locking state is released, and the stability of the implantation operation is enhanced.
4) The silicone oil coating is attached to the puncture needle tube, so that the puncture force of the needle point can be effectively reduced, and the damage to eye tissues is reduced; the implantation system is matched with a corresponding protective cap, a self-adaptive needle plug is arranged in the protective cap, and the self-adaptive needle plug plays an axial limiting role in a drainage device in a puncture needle tube while protecting the puncture needle tube of the implantation system.
5) The implantation system disclosed by the invention is more accurate in positioning, simpler, more stable, safer and more reliable in injection mode, and smaller in operation trauma, so that the operation steps of glaucoma implantation operation are greatly simplified, and the operation difficulty of the operation is reduced.
Drawings
To more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
FIG. 1 is a front view of an embodiment of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a cross-sectional view of FIG. 1;
FIG. 4 is a schematic diagram of a bolus assembly;
FIG. 5 is a schematic view of the spring abutting the lower housing during the pushing;
FIG. 6 is a schematic structural view of the locking mechanism;
FIG. 7 is a structural diagram (partial sectional view) of a locking state of the locking mechanism;
FIG. 8 is a schematic cross-sectional view of the locking mechanism in a locked state with the protruding shaft of the locking rod positioned in the step of the spiral surface of the inner hole of the screw cap;
FIG. 9 is a structural schematic diagram of the unlocked state of the locking mechanism;
FIG. 10 is a schematic cross-sectional view of the locking mechanism in an unlocked state with the protruding shaft of the locking rod positioned in the step of the helicoid of the inner hole of the screw cap;
FIG. 11 is a schematic view of the structure of the front end of the lower housing;
FIG. 12 is a schematic cross-sectional view of a protective cap.
Reference numerals: 1-upper shell, 2-thumb wheel, 3-needle seat, 4-puncture needle tube, 5-locking mechanism, 6-lower shell, 7-spring, 8-O-shaped ring, 9-injection rod, 10-sliding rod, 51-screw cap, 52-limiting block, 53-locking rod, 54-bottom plate, 55-second spring and 56-third spring; 11-a protective sleeve, 12-a self-adaptive needle plug, 13-a protective cap, 14-an anti-skidding groove, 61-a luer conical joint, 62-a buckle, 511-a spiral surface step limiting groove, 512-an upper limiting platform, 513-a lower limiting platform and 531-a convex shaft.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, as generally described and illustrated in the figures herein, could be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, as presented in the figures, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
A glaucoma drainage tube implanting system is shown in figures 1, 2 and 3 and comprises an outer shell, wherein the outer shell comprises an upper shell 1 and a lower shell 6, the upper shell 1 is connected with the lower shell 6 in a closed mode, one end of the lower shell 6 is provided with a guide tube, a through passage is arranged in the guide tube, one end of the guide tube is connected with a needle seat 3, and the needle seat 3 is connected with a puncture needle tube 4; a push injection component is arranged in the outer shell; for convenience of description, one end close to the puncture needle tube is defined as a front end, and one end far away from the puncture needle tube is defined as a rear end, the push injection assembly is shown in fig. 3 and 4 and comprises a dial wheel 2, a sliding rod 10 and a push injection rod 9, the dial wheel 2 is rotatably connected with the upper shell 1, and the outer periphery of the dial wheel 2 is in a tooth shape; the middle part of the sliding rod 10 is provided with a sliding chute perpendicular to the pushing direction, the sliding chute is connected to an eccentric shaft of the thumb wheel 2 in a sliding manner, and the periphery of the front end of the sliding rod 10 is matched with a channel of the lower shell 6; the front end of the sliding rod 10 is connected with the injection rod 9, the front end of the injection rod 9 is arranged in the puncture needle tube 4, the dial wheel 2 is poked, the eccentric shaft rotates, the sliding rod 10 and the injection rod 9 are driven to axially slide along a channel at the front end of the lower shell 6, and then the drainage device arranged in the puncture needle tube 4 is pushed.
Furthermore, a resistance-increasing structure is arranged between the sliding rod 10 and the lower shell 6, specifically, at least one O-shaped ring 8 is arranged at the matching section of the front end of the sliding rod 10 and the channel of the lower shell 6, one side of the O-shaped ring 8 is clamped in the groove on the sliding rod 10, the other side of the O-shaped ring is in interference fit with the inner wall of the channel of the front end of the lower shell 6, when the O-shaped ring 8 slides on the inner wall of the channel of the front end of the lower shell 6, friction force is generated by extrusion, and the friction force of the part can increase the pushing resistance and improve the stability. Furthermore, a spring 7 is sleeved on the periphery of the front end of the sliding rod 10, the rear end of the spring 7 is fixed on the sliding rod 10, the front end is a free end, after the sliding rod 10 is pushed forward to a position, the front end of the spring 7 abuts against the end surface of the channel of the lower shell 6, as shown in fig. 5; when the front end of the spring 7 abuts against the end surface of the channel of the lower shell 6, the spring 7 is continuously pushed, and the pushing resistance is further increased; an operator obtains the feedback of the stroke of the drainage device, the speed of shifting by the dial wheel 2 is reduced at the moment, the injection rod 9 further pushes the drainage device forwards, and when the drainage device is pushed to the limit position, the drainage device is positioned at the preset planting position in the eyeball; stopping poking the poking wheel, slowly withdrawing the needle until the implantation system is completely separated from the human eye.
Furthermore, the push injection assembly is further provided with a locking mechanism 5, the locking mechanism 5 is arranged in the upper shell and located behind the dial wheel 2, the lower end of the locking mechanism 5 is movably connected with the sliding rod 10, the locking state of the sliding rod 10 is adjusted, the movement of the sliding rod 10 is limited, and misoperation before an operation is avoided. Specifically, as shown in fig. 6, 8 and 10, the locking mechanism includes a screw cap 51, a limiting block 52, a locking rod 53, a bottom plate 54 and a second spring 55; the limiting block 52 is in a hollow cylinder shape, the upper part of the limiting block 52 is movably clamped at the periphery of the screw cap 51, and the bottom of the limiting block 52 is connected with a bottom plate 54; an inner hole is formed in the screw cap 51, a spiral surface step limiting groove 511 is formed in the inner side wall of the inner hole, and an upper limiting platform 512 and a lower limiting platform 513 are respectively arranged at two ends of the spiral surface step limiting groove 511; the locking rod 53 is in a step column shape, the upper end of the locking rod 53 is movably connected in an inner hole of the screw cap 51, a convex shaft 531 perpendicular to the axis is arranged at the upper part of the locking rod 53, the convex shaft 531 is connected in the spiral surface step limiting groove 511, the middle section of the locking rod 53 is clamped between the screw cap 51 and the bottom plate 54, the lower end of the locking rod passes through the bottom plate 54, a lug is arranged at the middle section of the locking rod 53, a second spring 55 is sleeved on the periphery below the lug, one end of the second spring 55 is abutted to the lower end face of the lug, and the other end of the second spring 55 is abutted to the upper surface of the bottom plate 54; the periphery of the limiting block 52 is connected with a clamping hook in the upper shell 1, and the top of the screw cap 51 protrudes out of the upper shell 1; the rear end of the slide rod 10 is provided with a V-shaped limiting groove and a limiting step, as shown in fig. 7, in a locking state, the lower end of the locking rod 53 is clamped in the limiting step, and at the moment, the thumb wheel is pulled, so that the slide rod 10 cannot move; in the locking state, the locking mechanism is as shown in fig. 8, the protruding shaft 531 is located on the lower limiting platform 513 of the spiral surface step limiting groove 511; at this time, the screw cap 51 is rotated, the spiral surface step limiting groove 511 slowly releases pressure to the convex shaft 531 of the locking rod 53, and the locking rod 53 is pushed to move upwards along the axis under the action of the second spring 55; when the lower end of the locking rod 53 is completely separated from the limiting step, the thumb wheel is pulled, the sliding rod 10 can slide, after the sliding rod 10 slides, the lower end of the locking rod 53 is clamped in the V-shaped limiting groove, and meanwhile, the sliding rod can be guided to limit the sliding rod 10 to swing left and right, as shown in fig. 9; in the unlocked state of the locking mechanism, as shown in fig. 10, the protruding shaft 531 is located in the upper limiting platform 512 of the spiral surface step limiting groove 511. Preferably, the periphery cover in the lug top of check lock lever 53 is equipped with third spring 56, third spring 56 one end butt lug up end, the interior top surface of one end butt stopper 52, under the unlocked state, the check lock lever lower extreme card is established in the spacing recess of V-arrangement, the spring compressive force of second spring 55 is less than the spring compressive force of third spring 56 this moment, the check lock lever receives the whole decurrent pressure of spring, can effectively increase the frictional force between check lock lever 53 and the slide bar V-arrangement spacing recess, thereby further adjust the impetus resistance.
As shown in fig. 11, the needle holder 3 and the lower housing 6 are connected by a standard luer conical joint 61 and locked by a buckle 62, so that the assembly is simple and reliable; the outer wall of the puncture needle tube 4 is attached with a silicone oil coating, and the adhesion of the silicone oil coating can reduce the puncture force, so that the puncture needle tube can enter and exit eye tissues more smoothly, and the device is convenient to operate stably.
Further, as shown in fig. 1, a protective cap 13 is movably connected to the needle base 3, the protective cap 13 is composed of a self-adaptive needle plug 12 and a protective sleeve 11, as shown in fig. 12, the self-adaptive needle plug 12 is made of flexible metal, and can be adapted to the axis of the puncture needle tube in the assembling process, so that the puncture needle tube is easy to assemble into a hole of the puncture needle tube 4, and the drainage device can be prevented from falling out of the puncture needle tube 4.
Furthermore, the outer surface of the lower shell 6 is provided with finger grooves convenient to hold, the implantation system is clamped and supported by a thumb, a middle finger and a tiger's mouth in a pen-holding type handheld mode, and the finger grooves are internally provided with a plurality of anti-skidding grooves 14, so that the friction force between a human hand and the implantation system is increased, and the stable holding is convenient.
The present invention is capable of other embodiments, and various changes and modifications can be made by one skilled in the art without departing from the spirit and scope of the invention.
Claims (11)
1. A glaucoma drainage tube implantation system, comprising: the puncture needle comprises an outer shell, wherein the outer shell comprises an upper shell (1) and a lower shell (6), the upper shell (1) is connected with the lower shell (6) in a closed manner, one end of the lower shell (6) is provided with a guide cylinder, a through passage is arranged in the guide cylinder, one end of the guide cylinder is connected with a needle seat (3), and the needle seat (3) is connected with a puncture needle tube (4); a push injection component is arranged in the outer shell; defining one end close to the puncture needle tube as a front end and one end far away from the puncture needle tube as a rear end, wherein the injection component comprises a dial wheel (2), a sliding rod (10) and an injection rod (9), the dial wheel (2) is rotatably connected with the upper shell (1), the middle part of the sliding rod (10) is provided with a sliding chute vertical to the injection direction, the sliding chute is slidably connected on an eccentric shaft of the dial wheel (2), and the periphery of the front end of the sliding rod (10) is matched with a channel of the lower shell (6); the front end of the sliding rod (10) is connected with a pushing injection rod (9), and the front end of the pushing injection rod (9) is arranged in the puncture needle tube (4).
2. The glaucoma drainage tube implant system of claim 1 wherein: and a resistance increasing structure is arranged between the sliding rod (10) and the lower shell (6).
3. The glaucoma drainage tube implant system of claim 2 wherein: the front end of the sliding rod (10) and the channel matching section of the lower shell (6) are provided with at least one O-shaped ring (8), one side of the O-shaped ring (8) is clamped in a groove in the sliding rod (10), and the other side of the O-shaped ring is in interference fit with the inner wall of the channel at the front end of the lower shell (6).
4. The glaucoma drainage tube implant system of claim 2 or 3 wherein: the outer periphery of the front end of the sliding rod (10) is sleeved with a spring (7), the rear end of the spring (7) is fixed on the sliding rod (10), the front end is a free end, the sliding rod (10) is pushed forwards, and the front end of the spring (7) is abutted to the end face of the channel of the lower shell (6).
5. The glaucoma drainage tube implant system of claim 1 or 2 wherein: the push injection assembly is also provided with a locking mechanism (5), and the locking mechanism (5) is arranged in the upper shell (1) and is positioned behind the dial wheel (2); the lower end of the locking mechanism (5) is connected with the sliding rod (10) to limit the movement of the sliding rod (10).
6. The glaucoma drainage tube implant system of claim 5 wherein: the locking mechanism (5) comprises a screw cap (51), a limiting block (52), a locking rod (53), a bottom plate (54) and a second spring (55); the limiting block (52) is in a hollow cylinder shape, the upper part of the limiting block (52) is movably clamped at the periphery of the screw cap (51), and the bottom of the limiting block (52) is connected with a bottom plate (54); an inner hole is formed in the screw cap (51), and a spiral surface step limiting groove (511) is formed in the inner side wall of the inner hole; the locking rod (53) is in a step column shape, the upper end of the locking rod (53) is movably connected into an inner hole of the screw cap (51), a convex shaft (531) perpendicular to the axis is arranged on the upper portion of the locking rod (53), the convex shaft (531) is connected into a spiral surface step limiting groove (511), the middle section of the locking rod (53) is clamped between the screw cap (51) and the bottom plate (54), the lower end of the locking rod penetrates through the bottom plate (54), a lug is arranged on the middle section of the locking rod (53), a second spring (55) is sleeved on the periphery below the lug, one end of the second spring (55) is abutted to the lower end face of the lug, and the other end of the second spring is abutted to the upper surface of the bottom plate (54); the periphery of the limiting block (52) is connected with a clamping hook in the upper shell (1), and the top of the screw cap (51) protrudes out of the upper shell (1); the rear end of the sliding rod (10) is provided with a limiting groove and a limiting step, the lower end of the locking rod (53) is clamped in the limiting step in a locking state, and the lower end of the locking rod (53) is clamped in the limiting groove in an unlocking state.
7. The glaucoma drainage tube implant system of claim 6 wherein: the periphery of the upper portion of the lug of the locking rod (53) is sleeved with a third spring (56), one end of the third spring (56) is abutted to the upper end face of the lug, and the other end of the third spring is abutted to the inner top face of the limiting block (52).
8. The glaucoma drainage tube implant system of claim 1 wherein: the needle seat (3) is movably connected with a protective cap (13), the protective cap (13) is composed of a self-adaptive needle plug (12) and a protective sleeve (11), and the self-adaptive needle plug (12) is made of flexible metal.
9. The glaucoma drainage tube implant system of claim 1 wherein: the outer wall of the puncture needle tube (4) is attached with a silicone oil coating.
10. The glaucoma drainage tube implant system of claim 1 wherein: the outer surface of the lower shell (6) is provided with a finger groove convenient to hold, and a plurality of anti-skidding grooves (14) are arranged in the finger groove.
11. The glaucoma drainage tube implant system of claim 1 wherein: the needle seat (3) and the lower shell (6) are connected by adopting a standard luer conical joint (61) and are locked by a buckle (62).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211375434.0A CN115414179A (en) | 2022-11-04 | 2022-11-04 | Glaucoma drainage tube implantation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211375434.0A CN115414179A (en) | 2022-11-04 | 2022-11-04 | Glaucoma drainage tube implantation system |
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| Publication Number | Publication Date |
|---|---|
| CN115414179A true CN115414179A (en) | 2022-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211375434.0A Pending CN115414179A (en) | 2022-11-04 | 2022-11-04 | Glaucoma drainage tube implantation system |
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| CN (1) | CN115414179A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070191863A1 (en) * | 2006-01-17 | 2007-08-16 | De Juan Eugene Jr | Glaucoma Treatment Device |
| CN201949470U (en) * | 2011-01-30 | 2011-08-31 | 北京谊安医疗系统股份有限公司 | Locking device used for anesthesia machine and anesthesia machine provided therewith |
| CN211433652U (en) * | 2019-09-27 | 2020-09-08 | 安徽国泰国瑞医疗科技有限公司 | Device for implanting ophthalmic drainage tube |
| CN212089931U (en) * | 2019-11-08 | 2020-12-08 | 爱博诺德(北京)医疗科技股份有限公司 | Capsule tension ring injector |
| CN114848290A (en) * | 2022-05-06 | 2022-08-05 | 海思盖德(苏州)生物医学科技有限公司 | Eye implant conveyer |
-
2022
- 2022-11-04 CN CN202211375434.0A patent/CN115414179A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070191863A1 (en) * | 2006-01-17 | 2007-08-16 | De Juan Eugene Jr | Glaucoma Treatment Device |
| CN201949470U (en) * | 2011-01-30 | 2011-08-31 | 北京谊安医疗系统股份有限公司 | Locking device used for anesthesia machine and anesthesia machine provided therewith |
| CN211433652U (en) * | 2019-09-27 | 2020-09-08 | 安徽国泰国瑞医疗科技有限公司 | Device for implanting ophthalmic drainage tube |
| CN212089931U (en) * | 2019-11-08 | 2020-12-08 | 爱博诺德(北京)医疗科技股份有限公司 | Capsule tension ring injector |
| CN114848290A (en) * | 2022-05-06 | 2022-08-05 | 海思盖德(苏州)生物医学科技有限公司 | Eye implant conveyer |
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