CN215994482U - Micro-stent coating fluid director - Google Patents
Micro-stent coating fluid director Download PDFInfo
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- CN215994482U CN215994482U CN202121977255.5U CN202121977255U CN215994482U CN 215994482 U CN215994482 U CN 215994482U CN 202121977255 U CN202121977255 U CN 202121977255U CN 215994482 U CN215994482 U CN 215994482U
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Abstract
The utility model discloses a micro-stent coating fluid director, which comprises a fluid director head, a fluid director waist, a fluid director tail and a central channel, wherein the central channel is used for guiding fluid, and the central channel penetrates through the fluid director head, the fluid director waist and the fluid director tail; the head of the fluid director is in a conical shape, the outer diameter of the fluid director gradually increases from top to bottom, at least one head side hole is formed in the peripheral surface of the head of the fluid director, the head side hole is inwardly communicated with the central channel, the total sectional area range of the head side holes is 0-0.12mm, and the outer diameter of the waist of the fluid director is smaller than the outer diameters of the head and the tail of the fluid director at two ends of the waist of the fluid director; the fluid director is implanted into the trabecular tissue, so that a drainage channel can be enlarged, aqueous humor is effectively led out, intraocular pressure is reduced, and the purpose of reducing the intraocular pressure is achieved.
Description
Technical Field
The utility model belongs to the technical field related to ophthalmic medical instruments, and particularly relates to a micro-stent coating fluid director.
Background
The most common clinical anti-glaucoma procedure is glaucomatous trabeculectomy, a procedure that creates a new channel in the limbus to improve intraocular pressure. Some glaucoma patients suffer from visual function impairment due to rapid increase of intraocular pressure, and at this time, another channel is established at the corneal limbus to dynamically balance intraocular pressure and effectively control intraocular pressure changes, thereby retaining residual visual function of the patient and achieving good long-term prognosis. Glaucoma is mainly caused by the obstruction of the aqueous circulation, and trabeculectomy, due to the greater trauma, may produce more postoperative complications, such as, for example, expulsion intraocular hemorrhage, delayed anterior chamber formation, fibrosis in the filtration channel, etc., which may severely lead to treatment failure and even secondary surgery.
Disclosure of Invention
Aiming at the current situation that the existing product is difficult to meet the clinical requirement, the utility model provides the micro-stent coating fluid director which can effectively solve the problem of overhigh intraocular pressure, has little wound on tissues, has an anticoagulant functional coating and greatly reduces the generation of postoperative complications.
The technical scheme of the utility model is as follows: a micro-stent coating fluid director comprises a fluid director head, a fluid director waist, a fluid director tail and a central channel, wherein the central channel is used for diversion, and the central channel penetrates through the fluid director head, the fluid director waist and the fluid director tail; the head of the fluid director is in a conical shape, the outer diameter of the fluid director gradually increases from top to bottom, at least one head side hole is formed in the peripheral surface of the head of the fluid director, the head side hole is inwardly communicated with the central channel, the total sectional area range of the head side holes is 0-0.12mm, and the outer diameter of the waist of the fluid director is smaller than the outer diameters of the head and the tail of the fluid director at two ends of the waist of the fluid director.
Furthermore, three identical head side holes are formed in the peripheral surface of the head of the fluid director, and the angles of two adjacent head side holes are staggered by 120 degrees in the circumferential direction.
Furthermore, at least one waist side hole is formed in the circumferential surface of the waist of the fluid director, and the waist side hole is communicated with the central channel inwards.
Further, three identical waist side holes are formed in the periphery of the head portion of the fluid director, an angle of 120 ° is circumferentially staggered between two adjacent waist side holes, and the total sectional area range of the waist side holes is 0-0.12 mm.
Further, at least one tail side hole is formed in the peripheral surface of the tail portion of the fluid director, the tail side hole is communicated with the central channel inwards, and the total sectional area of the tail side hole is in a range of 0-0.12 mm.
Furthermore, three identical tail side holes are formed in the circumferential surface of the tail of the fluid director, and the angles of two adjacent tail side holes are staggered by 120 degrees in the circumferential direction.
Further, the maximum outer diameter of the fluid director ranges from 0.20mm to 0.30 mm.
Further, the total height of the flow guider ranges from 0.34mm to 0.40 mm.
Furthermore, the inner and outer surfaces of the head part, the waist part and the tail part of the fluid director are coated with anticoagulant functional coatings.
Compared with the prior art, the utility model has the beneficial effects that: the utility model provides a micro-stent coating fluid director which is a new operation choice, the head of the fluid director is directly implanted into a Schlemm tube, the waist is embedded in a pathological trabecular tissue, and the tail is kept in the front, so that the pathological trabecular tissue can be improved, drainage channels can be enlarged, aqueous humor can be effectively led out, intraocular pressure is reduced, and the purpose of reducing the intraocular pressure is achieved. Compared with the traditional trabeculectomy, the operation scheme can ensure that aqueous humor flows into subconjunctival or filtering bleb without punching a hole on the sclera, thereby effectively avoiding the risks of infection, leakage, irritation and other complications caused by invasive surgery; meanwhile, due to the extremely small size, the wound formed by the tissue is extremely small, and the anticoagulant functional coating is provided, so that the generation of postoperative complications can be reduced to a great extent.
Drawings
FIG. 1 is a first perspective view of a fluid director according to a first embodiment;
FIG. 2 is a perspective view of a second fluid director in accordance with an embodiment;
FIG. 3 is a top view of a deflector according to one embodiment;
FIG. 4 is a perspective view of the first fluid director of the second embodiment;
FIG. 5 is a second perspective view of the fluid director in the second embodiment;
FIG. 6 is a top view of the deflector in a second embodiment;
FIG. 7 is a first perspective view of a deflector according to a third embodiment;
FIG. 8 is a perspective view of a second fluid director in the third embodiment;
FIG. 9 is a top view of a deflector in a third embodiment;
labeled as:
the first embodiment is as follows: the flow guider 1, a flow guider head 11, a head side hole 111, a flow guider waist 12, a flow guider tail 13, a tail side hole 131 and a central channel 14;
example two: the fluid director 2, a fluid director head 21, a head side hole 211, a fluid director waist 22, a waist side hole 221, and a fluid director tail 23;
example three: the fluid director 3, a fluid director head 31, a head side hole 311, a fluid director waist 32, a waist side hole 321, a fluid director tail 33 and a tail side hole 331.
Detailed Description
The utility model is further described below with reference to the figures and examples.
The first embodiment is as follows:
as shown in fig. 1-3, which is a perspective structure view of a micro-stent coated fluid director according to a first embodiment of the present invention, the fluid director 1 includes a fluid director head 11, a fluid director waist 12, a fluid director tail 13 and a central channel 14, the central channel 14 is used for guiding fluid, and the central channel 14 penetrates through the fluid director head 11, the fluid director waist 12 and the fluid director tail 13; the head part 11 of the fluid director is conical, the outer diameter of the fluid director gradually increases from top to bottom, and the outer diameter of the waist part 12 of the fluid director is smaller than the outer diameters of the head part 11 and the tail part 12 of the fluid director at two ends of the waist part.
The microcast coated deflector can be delivered embedded in trabecular tissue by minimally invasive surgery, with the deflector tail 13 remaining in the anterior chamber, the deflector head 11 penetrating the trabecular tissue into schlemm's canal, and the deflector waist 12 embedded in the trabecular tissue; the micro-stent coated fluid director has a central channel 14, the central channel 14 passes through the fluid director waist 12 and the fluid director head 11 from the center of the fluid director tail 12 to integrally penetrate the fluid director 1, and aqueous humor is drained from the posterior chamber into the anterior chamber through the central channel 14.
The total height range of the fluid director 1 is 0.34mm-0.40mm, the whole maximum outer diameter range of the fluid director is 0.20mm-0.30mm, anticoagulant functional coatings are coated on the inner and outer surfaces of the head 11 of the fluid director, the waist 12 of the fluid director and the tail 13 of the fluid director, the surface of the fluid director 1 is smooth and flat, all edges or edges and corners are polished or designed into arc chamfers, and the foreign body sensation of the eyes after the fluid director 1 is implanted is effectively reduced.
In order to facilitate the head 11 of the fluid director to more easily penetrate through trabecular meshwork tissues and enter a schlemm tube, the head 11 of the fluid director is conical, the outer diameter of the upper end of the head 11 of the fluid director ranges from 0.05mm to 0.10mm, the outer diameter of the lower end of the head ranges from 0.20mm to 0.30mm, the outer diameters of the upper end to the lower end of the head are gradually increased, four head side holes 111 are formed in the peripheral surface of the head 11 of the fluid director, the four head side holes 111 are distributed around the axis of the fluid director at equal angles of 90 degrees, each head side hole 111 is inwards communicated with the central channel 14, the total sectional area of the head side holes 111 ranges from 0mm to 0.12mm, and in the embodiment, the total sectional area of the head side holes 111 is 0.006 mm.
The deflector waist 12 is cylindrical, the outer diameter range of the deflector waist 12 is 0.12mm-0.18mm, the deflector tail 13 is cylindrical, the outer diameter range of the deflector tail 13 is 0.20mm-0.30mm, three identical tail side holes 131 are arranged on the peripheral surface of the deflector tail 13, an angle of 120 degrees is circumferentially staggered between two adjacent tail side holes 131, the total sectional area range of the tail side holes 131 is 0-0.10 mm, and in the embodiment, the total sectional area of the tail side holes 131 is 0.006 mm; the deflector head 11, the deflector waist 12 and the deflector tail 13 are all coaxially arranged.
In this embodiment, the head side hole 111 formed in the deflector head 11 and the tail side hole 131 formed in the deflector tail 13 are both communicated with the central channel 14, so that the aqueous humor drainage efficiency is greatly increased.
Example two:
different from the first embodiment, in the fluid director 2 in the present embodiment, three head side holes 211 are formed in the peripheral surface of a head portion 21 of the fluid director, an included angle of 120 ° is formed between two adjacent head side holes 211, three waist side holes 221 are formed in the peripheral surface of a waist portion 22 of the fluid director, a total cross-sectional area of the waist side holes 221 ranges from 0mm to 0.10mm, preferably, a total cross-sectional area of the waist side holes 221 is 0.006 mm, an included angle of 120 ° is formed between two adjacent waist side holes 221, and the peripheral surface of a tail portion 23 of the fluid director is in a closed state, and no side hole is formed.
Example three:
in the deflector 3 of the present embodiment, the head side hole 311 formed in the deflector head 31 is the same as that of the second embodiment, and the waist side hole 321 formed in the deflector waist 32 is the same as that of the second embodiment, and the present embodiment is different from the second embodiment in that: three tail side holes 331 are formed in the peripheral surface of the deflector tail 33, an angle of 120 ° is circumferentially staggered between two adjacent tail side holes 331, the total cross-sectional area range of the tail side holes 331 is 0-0.10 mm, and preferably, the total cross-sectional area of the tail side holes 331 is 0.006 mm.
In the three embodiments, different side hole opening schemes are arranged at the head, the waist and the tail of the fluid director, because the intraocular pressure rise degree of each patient is different, the flow rate also needs to be controlled when the fluid is drained by the aqueous humor drainage system, for example, the drainage speed of the fluid director in the third embodiment is higher than that in the first and second embodiments, so that different types can be provided for different patients, the operation is more refined, and the fluid director is more suitable for the state of an illness of the patient.
The above description is only for the preferred embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes and substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. A micro-stent coating fluid director is characterized in that: the fluid director comprises a fluid director head, a fluid director waist, a fluid director tail and a central channel, wherein the central channel is used for guiding fluid, and the central channel penetrates through the fluid director head, the fluid director waist and the fluid director tail; the head of the fluid director is in a conical shape, the outer diameter of the fluid director gradually increases from top to bottom, at least one head side hole is formed in the peripheral surface of the head of the fluid director, the head side hole is inwardly communicated with the central channel, the total sectional area range of the head side holes is 0-0.12mm, and the outer diameter of the waist of the fluid director is smaller than the outer diameters of the head and the tail of the fluid director at two ends of the waist of the fluid director.
2. The microscaffold coating flow director of claim 1, wherein: three identical head side holes are arranged on the peripheral surface of the head of the fluid director, and an angle of 120 degrees is staggered between every two adjacent head side holes in the circumferential direction.
3. The microscaffold coating flow director of claim 2, wherein: the periphery of the waist of the fluid director is provided with at least one waist side hole which is communicated with the central channel inwards.
4. A micro stent coating deflector according to claim 3, wherein: the peripheral surface of the head of the fluid director is provided with three same waist side holes, the two adjacent waist side holes are circumferentially staggered by an angle of 120 degrees, and the total sectional area range of the waist side holes is 0-0.12 mm.
5. The microscaffold coating flow director of claim 4, wherein: the peripheral surface of the tail of the fluid director is provided with at least one tail side hole, the tail side hole is communicated with the central channel inwards, and the total sectional area range of the tail side hole is 0-0.12 mm.
6. The microscaffold coating flow director of claim 1, wherein: three identical tail side holes are arranged on the circumferential surface of the tail of the fluid director, and an angle of 120 degrees is staggered between every two adjacent tail side holes in the circumferential direction.
7. The microscaffold coating flow director of claim 1, wherein: the maximum outer diameter range of the fluid director is 0.20mm-0.30 mm.
8. The microscaffold coating flow director of claim 1, wherein: the total height of the flow guider ranges from 0.34mm to 0.40 mm.
9. The microscaffold coating flow director of claim 1, wherein: the inner and outer surfaces of the head part, the waist part and the tail part of the fluid director are coated with anticoagulant functional coatings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121977255.5U CN215994482U (en) | 2021-08-20 | 2021-08-20 | Micro-stent coating fluid director |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121977255.5U CN215994482U (en) | 2021-08-20 | 2021-08-20 | Micro-stent coating fluid director |
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| CN215994482U true CN215994482U (en) | 2022-03-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114652488A (en) * | 2022-03-22 | 2022-06-24 | 海思盖德(苏州)生物医学科技有限公司 | Intraocular implant and implant surface compound type medicine coating process |
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2021
- 2021-08-20 CN CN202121977255.5U patent/CN215994482U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114652488A (en) * | 2022-03-22 | 2022-06-24 | 海思盖德(苏州)生物医学科技有限公司 | Intraocular implant and implant surface compound type medicine coating process |
| WO2023179235A1 (en) * | 2022-03-22 | 2023-09-28 | 海思盖德(苏州)生物医学科技有限公司 | Intraocular implant and composite drug coating process on implant outer surface |
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