CN219629923U - Glaucoma drainage tube implantation system - Google Patents

Abstract

The utility model relates to the technical field of medical instruments and discloses a glaucoma drainage tube implantation system which comprises an outer shell, wherein one end of the outer shell is provided with a guide tube, a through channel is arranged in the guide tube, one end of the guide tube is connected with a needle seat, and the needle seat is connected with a puncture needle tube; a pushing injection component is arranged in the outer shell; the pushing injection assembly comprises a shifting wheel, a sliding rod and a pushing injection rod, the shifting wheel is rotationally connected with the upper shell, a sliding groove perpendicular to the pushing injection direction is arranged in the middle of the sliding rod, the sliding groove is slidingly connected to an eccentric shaft of the shifting wheel, and the periphery of the front end of the sliding rod is matched with a channel in the guide cylinder; the front end of the sliding rod is connected with a pushing injection rod, and the front end of the pushing injection rod is arranged in the puncture needle tube; the rear end of slide bar is equipped with the spacing groove, and the front end of spacing groove is equipped with the blend stop, and the spacing groove top is equipped with spacing section of thick bamboo, and sliding connection about spacing section of thick bamboo and the last casing is equipped with the spring between spacing section of thick bamboo and the last casing, the lower extreme butt spacing groove of spacing section of thick bamboo. The utility model simplifies the operation steps, reduces the operation difficulty, improves the operation stability and accuracy, and is safe and reliable.

Description

Glaucoma drainage tube implantation system

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a glaucoma drainage tube implantation system.

Background

Pathological elevated ocular pressure is a major risk factor for glaucoma, and the cause of elevated ocular pressure is that the dynamic balance of aqueous humor circulation is disrupted, and the elevated ocular pressure leads to optic nerve damage by both mechanical compression and by the mechanism of optic nerve ischemia, and the longer the duration of elevated ocular pressure, the more serious the damage to visual function, resulting in irreversible visual field defects. In the treatment of glaucoma clinically, lowering ocular pressure is currently considered the only treatment that is effective in controlling the progression of the condition. Methods of ocular pressure reduction generally include drug, laser and surgical therapies, and anti-glaucoma surgical therapies are the ultimate therapies indispensable for the treatment of this disease. Currently, the traditional anti-glaucoma surgery applied to clinic is trabeculectomy, specifically, a part of trabecular tissue is resected to establish a passage from the inside of the eye to the subconjunctival outside the eyeball 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 superficial anterior chamber and choroidal separation, bleb fibrosis, bleb infection and the like are caused after the surgery. In order to improve such a treatment mode of operation, a novel minimally invasive drainage device implantation operation is rapidly developed, and the operation mode is to guide one end of the drainage device to be pushed into the anterior chamber of the eye by using an implantation system, and the other end of the drainage device is placed under the cornea, and reconstruct an aqueous humor outflow channel by using the implantation drainage device, so that the intraocular pressure is reduced to achieve the treatment purpose.

Chinese patent No. CN 105434103B (grant date: 2017.07.07) discloses a mini-glaucoma drainage implant device and system, the implant device comprising a bolus assembly, the bolus assembly further comprising: a needle comprising a needle forward section at the forward most end of the device, and a needle rearward section other than the needle forward section, the needle rearward section comprising a partial rearward section surrounded by the cannula, and a remaining needle rearward section surrounded by the inner barrel extending from the interior of the cannula; 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 and the inner push rod, a tube cavity is formed around the push rod at 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 bulge adjusting and controlling device xiao Niu which is arranged at two ends of the wall of the inner cylinder and connected with the inner pushing and injecting rod and protrudes out of the outer surface of the outer cylinder, wherein the bulge adjusting and controlling device xiao Niu is used for adjusting and controlling the inner pushing and injecting rod to move forwards or backwards. When in use, the following problems exist: firstly, the push rod is pressed by the thumb, and meanwhile, different convex regulating buttons are pushed to realize forward or backward movement of the internal injection rod so as to push the implant, so that the operation is complex; secondly, the pushing stability is controlled by the hand feeling of a doctor, which may cause the problem of too high pushing speed in the operation process.

Disclosure of Invention

In order to solve the defects in the prior art, the utility model provides a glaucoma drainage tube implantation system which is stable in pushing and can finely control pushing displacement.

In order to achieve the technical purpose, the utility model adopts the following technical scheme:

the glaucoma drainage tube implantation system comprises an outer shell, wherein the outer shell comprises an upper shell and a lower shell, the upper shell is in closed connection with the lower shell, one end of the outer shell is provided with a guide tube, a through channel is arranged in the guide tube, one end of the guide tube is connected with a needle seat, and the needle seat is connected with a puncture needle tube; a pushing injection component is arranged in the outer shell; defining one end close to the puncture needle tube as the front end and one end far away from the puncture needle tube as the rear end, wherein the injection component comprises a poking wheel, a sliding rod and an injection rod, the poking wheel is rotationally connected with the upper shell, a sliding groove perpendicular to the injection direction is arranged in the middle of the sliding rod, the sliding groove is slidingly connected on an eccentric shaft of the poking wheel, and the periphery of the front end of the sliding rod is matched with a channel in the guide cylinder; the front end of the sliding rod is connected with a pushing injection rod, and the front end of the pushing injection rod is arranged in the puncture needle tube; the rear end of slide bar has seted up the spacing groove the same with the direction of pushing away the notes, the front end of spacing groove is equipped with the blend stop with pushing away the notes direction vertically, and spacing groove top is equipped with spacing section of thick bamboo, and sliding connection about spacing section of thick bamboo and the last casing is equipped with the spring between spacing section of thick bamboo and the last casing, the lower extreme butt spacing groove of spacing section of thick bamboo.

Further, be equipped with the spliced pole in the last casing, spacing section of thick bamboo clearance fit cover is established in the spliced pole periphery, be equipped with the spring chamber in the spliced pole, the spring is arranged in the spring chamber, spring upper end butt spring chamber top, lower extreme butt spacing section of thick bamboo inner chamber bottom.

Further, the limit groove is V-shaped.

Further, the lower end of the limiting cylinder is spherical, and the upper top surface of the barrier strip is smooth.

Further, a bar-shaped mark is arranged on the thumb wheel, and when the thumb wheel does not rotate, the mark is in a vertical state.

Further, the needle seat is connected with the outer shell body by adopting a standard luer conical connector and locked by a buckle.

Further, a silicone oil coating is attached to the outer wall of the puncture needle tube.

Further, the outer surface of the shell is provided with a plurality of anti-skid grooves.

Further, the needle seat is movably connected with a protective cap, the protective cap consists of a self-adaptive needle plug and a protective sleeve, and the self-adaptive needle plug is made of flexible metal materials.

Further, an observation window is formed in the protective sleeve.

Compared with the prior art, the utility model has the beneficial effects that:

in the implantation system, the pushing component adopts the crank pulley mechanism formed by the shifting wheel and the sliding rod, so that the linear displacement pushed by the pushing rod can be finely controlled, the stability of pushing is facilitated, secondary damage caused by excessive penetration of the pushing rod into intraocular tissues is avoided, and the operation difficulty is reduced; the limiting groove at the rear end of the push rod is matched with the limiting cylinder to apply certain pressure to the push rod, so that the pushing resistance of the pushing injection assembly can be increased, the rear end of the slide rod is prevented from swinging up and down, and the operation stability in operation is improved.

In the implantation system, the limit groove on the slide bar is V-shaped, so that the rear end of the slide bar can be prevented from swinging in the sliding process; the stop bar at the front end of the limit groove increases the initial torque of the rotation of the thumb wheel, and can give feedback to the starting of the propulsion stroke of the implantation system to the operator; effectively avoid the condition that the device is invalid and can not be perceived, and improve the safety of the operation.

In the implantation system, 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 self-adaptive needle plug is arranged in the protective cap, and plays an axial limiting role on the drainage device in the puncture needle tube while protecting the puncture needle tube of the implantation system.

The implantation system provided by the utility model provides a pen-holding type hand-held mode, increases the contact area of hands, is more beneficial to stable needle discharge, is more accurate in positioning, is simpler, more stable, safer and more reliable in pushing injection mode, and simultaneously causes less operation wound, so that the operation steps of glaucoma implantation operation are greatly simplified, and the operation difficulty of the operation is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a front view of an embodiment of the present utility model;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is an exploded view of the embodiment of FIG. 1;

FIG. 4 is a cross-sectional view of FIG. 2;

FIG. 5 is an enlarged schematic view at dashed box A in FIG. 4;

FIG. 6 is a schematic structural view of a bolus assembly;

FIG. 7 is a schematic structural view of the helmet;

fig. 8 is a schematic view of an implant assembly.

Reference numerals: 1-upper shell, 2-thumb wheel, 21-mark, 3-spring, 4-limit cylinder, 5-lower shell, 6-push injection subassembly, 7-push injection thing, 8-needle file, 9-protective cap, 10-puncture needle tube, 11-anti-slip groove, 12-spliced pole, 13-spring chamber, 61-push injection pole, 62-slide bar, 63-spout, 64-limit groove, 65-blend stop, 91-lag, 92-self-adaptation keeps the stopper, 93-observation window.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

1-5, the glaucoma drainage tube implantation system comprises an outer shell, wherein the outer shell comprises an upper shell 1 and a lower shell 5, the upper shell 1 is in closed connection with the lower shell 5, one end of the outer shell is provided with a guide tube, a through channel is arranged in the guide tube, the other end of the guide tube is connected with a needle seat 8, and the needle seat 8 is connected with a puncture needle tube 10; a push injection component 6 is arranged in the outer shell; defining one end close to the puncture needle tube 10 as the front end and one end far away from the puncture needle tube 10 as the rear end, wherein the injection component 6 comprises a thumb wheel 2, a sliding rod 62 and an injection rod 61, the thumb wheel 2 is rotationally connected with the upper shell 1, a sliding groove 63 perpendicular to the injection direction is arranged in the middle of the sliding rod 62, the sliding groove 63 is slidingly connected on an eccentric shaft of the thumb wheel 2, and the periphery of the front end of the sliding rod 62 is matched with a channel in a guide cylinder; the front end of the sliding rod 62 is connected with a push injection rod 61, and the front end of the push injection rod 61 is arranged in the puncture needle tube 10; the poking wheel 2 is poked, and the sliding component 6 can slide linearly along the axial direction of the guide cylinder; the rear end of slide bar 62 has seted up the spacing groove 64 the same with the direction of pushing away the notes, the front end of spacing groove 64 is equipped with the blend stop 65 with the direction of pushing away the notes perpendicularly, and spacing groove 64 top is equipped with spacing section of thick bamboo 4, and spacing section of thick bamboo 4 and upper housing 1 sliding connection from top to bottom is equipped with spring 3 between spacing section of thick bamboo 4 and the upper housing 1, and the lower extreme butt spacing groove 64 of spacing section of thick bamboo 4. Preferably, the limit groove 64 is V-shaped, the lower end of the limit cylinder 4 is spherical, and the upper top surface of the barrier strip 65 is smooth. As shown in fig. 6, the upper casing 1 is provided with a connecting column 12, the limiting cylinder 4 is sleeved on the periphery of the connecting column 12 in a clearance fit manner, a spring cavity 13 is arranged in the connecting column 12, the spring 3 is arranged in the spring cavity 13, the upper end of the spring 3 is abutted to the top of the spring cavity 13, and the lower end of the spring 3 is abutted to the bottom of the inner cavity of the limiting cylinder 4.

The limiting cylinder 4 and the spring 3 act on the limiting groove 64 of the sliding rod 62 together, the spring 3 has downward pressure on the limiting cylinder 4, and the linkage limiting cylinder 4 has downward pressure on the limiting groove 64 of the sliding rod 62, so that on one hand, the sliding damping of the sliding rod 62 sliding forwards is increased, the excessive sliding speed is avoided, and on the other hand, the back end of the sliding rod 62 is also prevented from swinging up and down, so that the operation stability is improved; meanwhile, the limit groove 64 well prevents the rear end of the slide bar 62 from swinging left and right in the sliding process; when the dial wheel 2 is started to be shifted, the spherical surface at the lower end of the limiting cylinder 4 is contacted with the blocking strip 65 on the limiting groove 64 of the sliding rod 62, and the blocking strip 65 provides forward resistance for the spherical surface at the lower end of the limiting cylinder 4, so that the starting propulsion resistance required by the dial wheel 2 is larger than the propulsion resistance required by the dial wheel 2 to be shifted stably, and a 'clicking' sound is generated when the spherical surface at the lower end of the limiting cylinder 4 slides over the highest position of the blocking strip 65, so that feedback is given to the start of the propulsion stroke of the implantation system of an operator.

The needle seat 8 is locked by a buckle after being connected with the outer shell by adopting a standard luer conical connector, and the assembly is simple and reliable; the silicone oil coating is attached to the outer wall of the puncture needle tube 10, and the attachment of the silicone oil coating can reduce the puncture force, so that the puncture needle tube 10 can more smoothly enter and exit the eye tissue, and the damage to the eye tissue during operation is reduced.

The contact part of the outer shell body with the middle finger and the thumb is provided with a plurality of anti-slip grooves 11 which are orderly arranged, so that the friction force between the hand and the outer shell body is increased, and the stable holding is facilitated; the thumb wheel 2 is provided with a bar-shaped mark 21, when the thumb wheel 2 is not rotated, i.e. the implantation system is not used, the mark 21 is in a vertical state, i.e. the implantation system is not damaged or used, so that the situation that the implantation system is invalid and cannot be perceived by an operator in the process of transportation or other possibly caused by the damage of the implantation system is avoided.

The needle seat 8 is movably connected with a protective cap 9, the protective cap 9 is formed by integrally injection molding a protective sleeve 91 and an adaptive retaining plug 92, the protective sleeve 91 is provided with an observation window 93 so as to facilitate the front end of the adaptive retaining plug 92 to be inserted into the puncture needle tube 10, the adaptive retaining plug 92 is made of flexible metal, and the inner hole axis of the puncture needle tube 10 can be adaptively inserted into the puncture needle tube 10 in the assembling process, so that the assembly is easy; the guard 91 is used to protect the needle tip of the needle cannula 10 from damage prior to use, and the adaptive retaining plug 92 is used to ensure that the implant 7 does not fall out prior to use, as shown in fig. 8, the adaptive retaining plug 92 seals the implant 7 within the needle cannula 10.

The application process of the utility model is as follows:

an implant 7 is arranged in the puncture needle tube 10, the thumb slowly dials the thumb wheel 2 at a uniform speed backwards, the thumb wheel 2 starts to rotate clockwise, a chute 63 in the middle of the sliding component 6 starts to slide on an eccentric shaft of the thumb wheel 2, the spring 3 is in a compressed state and presses down the limiting cylinder 4, the spherical surface at the lower end of the limiting cylinder 4 slides across a stop bar 65 on a limit groove 64 at the rear end of the sliding rod 62, an operator obtains feedback of the starting stroke of an implantation system, the pushing resistance of the limiting cylinder 4 is reduced after sliding across the stop bar 65, the thumb wheel 2 is continuously slowly and uniformly dialed, the front end of the sliding component 6 slides forwards in a guide cylinder inner channel of the outer shell, the pushing rod 61 at the front end of the sliding component 6 pushes the implant 7 to move towards the needle point, when the implant 7 pushes the needle point to a certain position, the thumb wheel 2 is stopped at the moment, and the needle is slowly withdrawn until the implantation system is completely separated from human eyes.

In the whole operation process, the pushing of the implant 7 can be accurately controlled with small displacement by the mode of driving the poking wheel 2 to drive the slide bar 62 to linearly move and the characteristics of the cam slide bar mechanism, and the linear displacement of the implant 7 can be controlled within an accurate range, so that the operation difficulty is greatly reduced; secondly, the way that the limiting cylinder 4, the spring 3 and the limiting groove 64 increase the pushing damping improves the operational stability in operation; in addition, the stop bar 65 at the front end of the limit groove 64 increases the initial torque of the rotation of the thumb wheel 2, and is matched with the bar-shaped mark 21 to feed back to the initial state of operation of the operator, so that misoperation before operation can be prevented, failure of the device and incapability of detecting the operation can be avoided, and the safety of the operation is greatly improved.

Of course, the present utility model is capable of other various embodiments and its several details are capable of modification and variation in light of the present utility model by one skilled in the art without departing from the spirit and scope of the utility model as defined in the appended claims.

Claims (10)

1. A glaucoma drainage tube implantation system, characterized by: the needle-guiding device comprises an outer shell, wherein the outer shell comprises an upper shell (1) and a lower shell (5), the upper shell (1) is in closed connection with the lower shell (5), one end of the outer shell is provided with a guide cylinder, a through channel is arranged in the guide cylinder, the other end of the guide cylinder is connected with a needle seat (8), and the needle seat (8) is connected with a puncture needle tube (10); a push injection component (6) is arranged in the outer shell; defining one end close to the puncture needle tube (10) as the front end and one end far away from the puncture needle tube (10) as the rear end, wherein the push injection assembly (6) comprises a poking wheel (2), a sliding rod (62) and a push injection rod (61), the poking wheel (2) is rotationally connected with the upper shell (1), a sliding groove (63) perpendicular to the push injection direction is arranged in the middle of the sliding rod (62), the sliding groove (63) is slidingly connected to an eccentric shaft of the poking wheel (2), and the periphery of the front end of the sliding rod (62) is matched with a channel in the guide cylinder; the front end of the sliding rod (62) is connected with a push injection rod (61), and the front end of the push injection rod (61) is arranged in the puncture needle tube (10); the rear end of slide bar (62) has seted up spacing groove (64) the same with the direction of pushing away the notes, the front end of spacing groove (64) is equipped with stop bar (65) perpendicular with the direction of pushing away the notes, and spacing groove (64) top is equipped with spacing section of thick bamboo (4), and sliding connection about spacing section of thick bamboo (4) and last casing (1) is equipped with spring (3) between spacing section of thick bamboo (4) and last casing (1), and the lower extreme butt spacing groove (64) of spacing section of thick bamboo (4).

2. The glaucoma drainage tube implant system of claim 1 wherein: the utility model discloses a spring device, including upper casing (1), spacing section of thick bamboo (4), connecting column (12) are equipped with in upper casing (1), spacing section of thick bamboo (4) clearance fit cover is established in connecting column (12) periphery, be equipped with spring chamber (13) in connecting column (12), spring (3) are arranged in spring chamber (13), spring (3) upper end butt spring chamber (13) top, lower extreme butt spacing section of thick bamboo (4) inner chamber bottom.

3. The glaucoma drainage tube implant system of claim 1 wherein: the limiting groove (64) is V-shaped.

4. The glaucoma drainage tube implant system of claim 3 wherein: the lower end of the limiting cylinder (4) is spherical, and the upper top surface of the barrier strip (65) is smooth.

5. The glaucoma drainage tube implant system of claim 1 wherein: the dial wheel (2) is provided with a bar-shaped mark (21), and when the dial wheel (2) does not rotate, the mark (21) is in a vertical state.

6. The glaucoma drainage tube implant system of claim 1 wherein: the needle seat (8) is connected with the outer shell body by adopting a standard luer taper joint and is locked by a buckle.

7. The glaucoma drainage tube implant system of claim 1 wherein: the outer wall of the puncture needle tube (10) is attached with a silicone oil coating.

8. The glaucoma drainage tube implant system of claim 1 wherein: the outer surface of the shell body is provided with a plurality of anti-skid grooves (11).

9. The glaucoma drainage tube implant system of claim 1 wherein: the needle seat (8) is movably connected with a protective cap (9), the protective cap (9) is composed of a self-adaptive needle plug (92) and a protective sleeve (91), and the self-adaptive needle plug (92) is made of flexible metal materials.

10. The glaucoma drainage tube implant system of claim 9 wherein: an observation window (93) is formed in the protective sleeve (91).